Rock support methods

February, 2015
LAMANNA Luigi Franco
June, 2015SEPTEMBER, 2016
INJECTION SYSTEMS, CONSOLIDATION AND ANCHORING FOR
THE MINING INDUSTRY, TUNNELLINGS AND ENGINEERING
APRIL, 2018

ROCK SUPPORT
Rock tunnel support are divided into two categories:
A) – Temporally support:
This is a short-term measure only to provide a safe working envioronment for continuous excavation.
Common techniques are bolts and shotcrete.
B) – Permanent support:
This is long-term support for a life-span of the tunnel.
The methods available are steel set, cast-in concrete, concrete segment, bolt, shotcrete (with or without steel
fibre reinforcement).
EFFECTS OF CORROSION ..?..
Allphotosillustredare copiedfrom the WEB
MESH SUPPORT
Photo:
Marco D. Boscardin, Ph.D., DGE, PE
Boscardin Consulting Engineers, Inc.
Photo:
Marco D. Boscardin, Ph.D., DGE, PE
Boscardin Consulting Engineers, Inc.

“GLOBALSTONE-M” and “GLOBALSTONE-LV50”
- GLOBALSTONE-M (BOLTING SYSTEM FOR TUNNELLING AND MINING):
SEALING AND STRUCTURAL BONDING OF FISSURES AND CRACKS - two-component silicon-mineral-organic
formula with low viscosity, does not expand, with high mechanical strength. Ideal for waterproofing broken rocks,
consolidating land and rocks subject to land slide, filling cracks and cavities as well as for constructions, coatings and
insulating materials, for waterproofing the walls of tanks and aqueducts. Non-toxic and non-polluting.FIRE RESISTANT.
- GLOBALSTONE-LV50 (BOLTING SYSTEM FOR TUNNELLING AND MINING):
SEALING AND STRUCTURAL BONDING OF FISSURES AND CRACKS (FLEX) - STRATA CONSOLIDATION –
Organic-mineral two components resin, not expansible, characterized by low viscosity, excellent chimica stability,
mechanical resi stance and flexibility. Ideal for water-proofing fractured rock, consolidation of loose land and rock, crack
and cavity filling. Especially suitable for bonding injection drill bolts because the resins cure within just a few minutes and
the bolt can be loaded in a very short time. FIRE RESISTANT.

TECHNICAL DATA:
Mixing ratio (A + B) : 100: 100 parts in weight (1: 1 in volume).
Compressive strength: 55,9 Mpa at 24 h at 20 ° C and 60% R.H.
Flexure strenght: 20,7 Mpa at 24 h at 20 ° C and 60% R.H.
Tensile strenght: 14,2 Mpa at 24 h at 20 ° C and 60% R.H.
TECHNICAL DATA:
KEY FEATURES OF THE "FORMULATION" ARE:
Durability of “GLOBALSTONE” exceeding 500 years (we believe that can exceed 1,000- 2000 years without
being subject to any degradation): ability to resist weathering action, chemical attack, abrasion, or any
process of deterioration.

Ground support is necessary when voids (empty spaces) are created underground. Some means of support is required
in order to maintain the stability of the openings that are excavated.
The competeny of the rock being mined will determine how large a void may be created and what ground support
methods will be necessary to maintain a safe working environment.
THIS SUPPORT COMES IS TWO FORMS:
1) – AREA GROUND SUPPORT
Area ground support is used to prevent major ground failure. Holes are drilled into the back (celing) and walls and a long
steel rod (or rock bolt) is installed to hold thr ground together. There are three categories of rock bolt, differentiated by
how they engage the host rock. They are:
1.a) – Mechanically anchored bolts;
2.a) – Fully grouted rock bolts;
3.a) – Friction-anchored rock bolts.
2) – LOCAL GROUND SUPPORT
Local ground support is used to prevent smaller rock from falling from the backs and walls. Not all excavations require
local ground support.
Welded Wire Mesh is a metal screen with 100 x 100 mm (4 inch) openings. It is held to the backsusing point anchor
bolts or resin grouted rebar.
Shotcrete is fiber reinforced spray on concrete which coats the backs and walls preventing smaller rocks from falling.
Shotcrete thickness can be between 50 mm – 100 mm.
All photos illustred (partial text) are copied from the WEB – Prof. Dr. H.Z. Harraz

“GLOBALSTONE”
ORGANO-MINERAL FOAM FOR STRATA CONSOLIDATION
ROCK REINFORCEMENT ZONE STRESSED
REINFORCED ARCH IN ROCK
ROCK REINFORCEMENT

Mesh reinforcement can be used as an alternative if sprayed concrete is used to support clay
zones.
The mesh is anchored safely with bolts on each side of the zone before applying the sprayed
concrete.
It is important that the openingin the mesh is not too small so that there is between the
concrete and the rock surface.
Bar reinforcement is normally not used in pure arch structures, but is part of the sprayed
concrete ribs that are sometimes part of the arch.
MESH REINFORCEMENT
Numerical modelling was carried out for the following three different types of supports:
Case 1)- Shotcrete and bolts with cast concrete lining atthe invert;
Case 2) - Bolts with reinforced ribs of shotcrete and castconcrete lining at the invert;
Case 3) - Fully cast concrete lined tunnel.
Case 1) was further sub-divided into the following manner to study the effect of installing the
cast concrete lining at the invert at different time intervals (steps) i.e.:
1a) - Shotcrete with bolts and then placing the invert lining after a certain time lag in the
model;
1b) - Shotcrete with bolts and invert lining placed simultaneously;
1c) - Shotcrete with bolts without any lining at the invert.
ROCK SUPPORTS USED

Air piston diameter 160 mm
High pressure piston diameter 25 mm
Pressure ratio 1:40
High-pressure flow rate of each
pump cycle 49 cm3
Max working pressure 190 bar
Air connection diameter 10 bar
Max actuating pressure RD 32 X 1/8
Suction connection diameter RD 32 x 1/8
High pressure outlet connection DN 10
Max flow rate 8 l/min
DIMENSIONS
Length 720 mm
Depth 330 mm
Height 370 mm
Weight 74 kg
DIAGRAM PERFORMANCE
THE PNEUMATIC DRIVEN SINGLE PLUNGER PUMP FOR
TUNNEL AND MINING
MIXING TUBE COMPLETE – L= 1200 mm – with 4/5 mixing
elements and connection nipple DN10 and thread M 20 x 1,5 mt

ILLUSTRATIONS OF TRADITIONAL SUPPORT SYSTEM IN UNDERGROUND CONSTRUCTION (MINES)
MESHROCKBOLT
TIPICALLYMECHANICAL
INJECTIONPACKERS
TRADITIONALMETHODOF
INJECTINGRESIN

ADHESION
RESIN INJECTION
CEMENT
“GLOBALSTONE-LV50” AND “GLOBALSTONE-M”
ORGANO-MINERAL FOAM FOR STRATA
CONSOLIDATION
- CONVENIENT
- SIMPLE
- VERY HIGH STR. ANCHOR
- PERFECT FOR VERTICAL AND OVERHEAD ROUTING
ROCKBOLTS
THESE ARE REINFORCING ELEMENTS WHICH ARE TENSIONED DURING INSTALLATION. THEY CONSIST OF
A ROD AND MECHANICAL OF GROUTED ANCHORAGE (RESIN INJECTION) COUPLED WITH SOME MEANS
OF APPLYING AND RETAINING THE ROD TENSION. MECHANICAL FIXING ARE SUITABLE FOR HARD ROCK,
WHEREAS GROUTED, FIXED LENGTH BOLTS CAN BE USED IN MOST ROCK TYPES. THE LENGTH VARIES
BETWEEN 2 TO 8 M FOR RESIN INJECTION BARS, AND 3 TO 20 M FOR AN EXPANDING SHELL FIXING ON A
BAR.
YES
NO

PNEUMATIC HAND-HELD COCK DRILLS
YES RESIN “GLOBALSTONE”
NO RESIN CARTRIDGE
MINING:
ANCHORING–“GLOBALSTONE-M”
HARDROCK:
ROCKINJECTION–“GLOBALSTONE-LV50”
TEST WITH “GLOBALSTONE-LV50”
All photos illustred are copied from the WEB

GROUT ROCK BOLT SUJECT TO LATERAL FORCE
GLOBALSTONE-LV50 INJECTION
INJECTION WITH TRADITIONAL
RESIN OR CEMENT-BASED
PRODUCTS
TYPICAL EXAMPLE OF BREAKING
OF CEMENT-BASED PRODUCTS
THE PRODUCT HAS GREATER
PENETRATION INTO CRACKS
(0.005 INCHES)
FRACTURED ROCK
THE ”GLOBALSTONE-LV50" IS ABLE TO
ABSORB THE DEFORMATIONS WITHOUT
BREAKING
BAR
BAR
GROUT (RESIN) PERMEATED SOIL

TECHNICAL DATA:
Tensile strenght: 14,2 Mpa at 24 h at 20 ° C and 60% R.H.
The “GLOBALSTONE” have passed in ITALY the “TOXICITY TEST” (Test Report n. 370020/12) according to
the Legislation of the “Legislative Decree n. 152/06 P.IV-T.V - All. 5 Tab. 2.
TEST“GLOBALSTONE-M”

DRILLING INJECTION INSTALLATION
PENETRAINTOCRACKSOF0,25mm
"GLOBALSTONE-M" (thixotropic) - two-component injection resin, polyurea silicate, fire resistant, for
consolidation of land:
- consolidation of fractured rock in underground structures;
- coalbed consolidation;
- support with bolts (anchor blocks);
- does not absorb water; border time> 1 min.
THIXOTROPIC

SO HERE'S WHAT HAPPENS WHEN USED FOR CARTRIDGES ANCHOR BARS
NO - CARTRIDGES
- CEMENT
YES
- CHEMICAL INJECTION GROUTING "GLOBALSTONE-M"
OR "GLOBALSTONE-LV 50"
NO
NO

AllphotosillustredarecopiedfromtheWEB
SEGREGATION AMONG ROCK BOLTS
BOLT ANCHORAGE LYING NEAR
THE SCREENED ENTRY IS
STABLE AND THE FLOOR IS
CLEAR. ??
ENTRY UNSCREENED IS
IMPASSABLE.

TECHNICAL DATA:
The “GLOBALSTONE” have passed in ITALY the “TOXICITY TEST” (Test Report n. 370020/12) according to the
Legislation of the “Legislative Decree n. 152/06 P.IV-T.V - All. 5 Tab. 2.
TEST BY "CORE DRILLING" IN A
CONCRETE DAM 40 METERS DEEP
GLOBALSTONE-LV50

DRILLING INJECTION INSTALLATION
COTWOODFORFIXING
"GLOBALSTONE-LV50" - resin injection bi-component polyurea silicate, fire resistant, for consolidation
of land:
- Figure in existing procedures for injecting resin into the hole where you must anchor the bars are
shown. The procedures ensure good control over the effective fill the space between the bolts and the
rock, though, if you get to make a correct tape it is preferred method based on the resin bubbling up
in the talabro;
- border time > 4 min. PENETRAINTOCRACKSOF0,005-0,10mm
GROUT (RESIN)
PERMEATED SOIL

ROCK INJECTION BOLT IS USED WHEN THE CONVENTIONAL CONSOLIDATION (WITH PACKING
AND DIFFUSER) CAN NOT WAIT TO PROVIDE ADEQUATE STABILIZATION:
- STABILIZING INPUT THONG;
- INTERSECTION OF FAULTS;
- DEPUTY OF ROCK FALL IN THE POSTAL PACKER LONGWALL;
- STABILIZATION OF COVERS AND FACES IN DRIFT;
- COAL FACE STABILIZATION IN LONGWALL;
- CONSOLIDATION COAL AND STRATA;
- GRP STUCK DRILLING AND STEEL BOLTS AND DRIFTS RISE AND DIRECTION DIP;
- STUCK IN SUPPORT BOLT BELT ENTRY;
- FIXING THE FACE OF THE DRIFT.
THE ADJUSTMENT PROCESS REQUIRES A "GLOBALSTONE" PROPERTIES WITH ALMOST
THIXOTROPIC.
The “GLOBALSTONE” have passed in ITALY the “TOXICITY TEST” (Test Report n. 370020/12) according to the
Legislation of the “Legislative Decree n. 152/06 P.IV-T.V - All. 5 Tab. 2.
Allphotosillustredare copied
from the WEB

“GLOBALSTONE-LV50”
ORGANO-MINERAL FOAM FOR STRATA
CONSOLIDATION
-The product has greater penetration into
cracks (0.005 inches);
-The product not only anchors iron bars but
it also consolidates crumble and unstable rocks;
- The product block water inflows.
GLOBALSTONE - NON-FLAMMABLERESIN CARTRIDGE - FLAMMABLE
YESNO
NO
YES
GROUT (RESIN)
PERMEATED SOiL

Rock disaggregation between bolts extends nearly to bolt anchorage
NO
NO
SO HERE WHAT CAN HAPPEN WHEN CARTRIDGES ARE USED FOR
ANCHORING BARS
NO - CARTRIDGES
- CEMENT
YES - INJECTION CHEMICAL GROUTING “GLOBALSTONE-LV50”
RESINCARTRIDGE
RESINCARTRIDGE

ROCK BOLTING/ANCHORING
TBM

TBM S-167 STEG - HERRENKNECHT AG, ACHWANAU, DEUTSCHLAND
BLOCKY FACE CONDITIONS, LOTSCHBERG
WERNE BURGER, Chief Engineer, Herrenknecht AG,
Schwanau
North American Tunneling Coference 2006, Chicago, U.S.A.
Hard Rock Cutterhead Design
CONSOLIDATION, PROBE DRILLS
Consolidation Drills:
Provision for dealing with weak rock conditions
provisions can be made by installing a pair of
roof bolters just behind the dust shield. This
allows a primary roof support in poor ground
conditions. Due to restricted available space,
systematic bolting should be done from the
back-up.
Probe Drills:
Most TBMs provide probe drill equipment, which are generally
hydraulic percussion hammers that allow drilling up to 50 m
ahead. Special rock sampling rigs are provided on request.
It is highly recommended to perform probe drilling outside the
tunnel diameter because if the probe hole jams the drill rod,
advancing of the TBM is not hindered. If drilling in the tunnel
cross-section and the drill rod gets stuck, it is hard to get the drill
rod out because the cutterhead is not able to cut the steel, and
this ultimately damages the cutters.

TBM
WATER BEARING ZONE
INJ ECTION “GLOBALFOAM-WR” RESIN
FOAMS UPON CONTACT WITH WATER
(One component water sealing injection
resin for cracks and fissures in rock)
INJ ECTION “GLOBALFOAM-WR” RESIN
FOAMS UPON CONTACT WITH WATER
(One component water sealing injection
resin for cracks and fissures in rock)
INJ ECTION “GLOBALFOAM-SP” RESIN
PROBE DRILLHOLE
When the most important problem is water the basic principle of pre-ground treatment is to utilized the ground surrounnding the
tunnel as a load bearing ring and make it an integral part of the primary support and lining.
This conceprt can be reached by creating a tight ground ring around the lining so that the hydrostatic pressure inthe outer permeable
ground would act on the grouted ring instead of on the lining.
!

CONSOLIDATION AND ANCHORING SYSTEMS
USING A LINE OF EPOXY-BASED PRODUCTS

“GLOBALPOX-I-10/128” and “GLOBALPOX-MALTA-15/190”
- GLOBALPOX-I-10/128:
LOW VISCOSITY INJECTION RESIN - two-component, solvent-free, low viscosity injection-liquid,
based om high strength epoxy resins.
Is used to fill and seal cavities and cracks in structural components such as foundations, slabs and
water-retaining structures, columns, beams, bridgs and tunnels. It not only forms an effective barrier
against water infiltrtation of corrosion promoting media, but also structurally bonds the concrete sections
together.
- GLOBALPOX-MALTA-15/190:
HIGH PERFORMANCE EPOXY GROUTING SYSTEM – three-components resin, high performance,
moisture tolerant, epoxy grouting system. Used for starter bars, anchors, bridge bearings, crane tracks,
light rail and permanent way in tunnels and bridges.

TECHNICAL DATA (10 days):
Compressive strength: 55 N/mm2
at 24 h at 20 ° C and 65% R.H.
Flexure strenght: 50 N/mm2
at 24 h at 20 ° C and 65% R.H.
Tensile strenght: 24 N/mm2 at 24 h at 20 ° C and 65% R.H.
Modulus of elasticity: 1.050 N/mm2
TECHNICAL DATA:
Mixing ratio (A + B+ C): 6 : 1: 25/30 by weight
Compressive strength: 90 N/mm2
at 28 days (ASTM-C-579)
Flexure strenght: 40 N/mm2
(ASTM-C-580)
Modulus of elasticity in compression: 17.850 N/mm2 (ASTM-D-695-96)
Coefficient of thermal expansion: 2.1 x 10 -5
mm/mm/°C (ASTM-C-531) [Temp. Range – 30° C to +30° C]
Water absorption: 0,11 % to 7 days (ASTM-C-413)

“GLOBALPOX-I-10/128” or “GLOBALPOX-MALTA-15/190”
LOW VISCOSITY INJECTION RESIN OR HIGH
PERFORMANCE EPOXY GROUTING SYSTEM FOR
ANCHORS AND STRATA CONSOLIDATION
“GLOBALPOX” - NON-FLAMMABLERESIN CARTRIDGE - FLAMMABLE
YESNO
NO YES
GROUT (RESIN)
PERMEATED SOiL

The injection must be adjusted to the actual degree of difficulty, ingeneral one must
drill holes distributed over the entire tunnel face, typically with spacing 1-1,5 m.
Appropriatelength of such screens are usually somewhat shorter than the normal
injection screen because of the difficult drillability.
Experience from operation in weathered and densely cracked rock mass have
demonstrated that systematic pre-grouting using resin (GLOBALSTONE or
GLOBALPOX) based injection agents has contributed to an improved blasted profile,
i.e. less rock fall that again has resulted in improved stability.
THE INJECTION
Next activity is to establish an interaction between the sprayed layer and the rock
mass with use of rock bolts.
A fast interaction can be achieved by using polyester end anchored bolts. They
should thereafter be groutedbefore next blast.
Accuracy while installing the bolts is important. They should follow the theoretically
curvature of the tunnel and lengthwise also the center of the reinforcement.
Bolt drilling may start as soon as the sprayed concretehas reached acceptable
strength.
RADIAL BOLTS

Refers to a group of undeground mining techniques
used to extract coal, oil shale, tar sands, salt and other
minerals or geological materials from sedimentary
(“soft”) rocks.
Mining deposits in sedimentary rocks are commonly
layered and relatively less hard.
Refers to various underground mining techniques used
to excavate hard rocks, mainly those containing metals
such as ore containing gold, silver, iron, copper, zinc,
nickel and lead, but also involves using the same
techniques for excavating ores of gems such as
diamonds.
Mining deposits in hard (sedimentary or igneous or
metamorphic) rocks are commonly massive and hard.
Mining can be done by any one of the following
methods:
1) - Longwall mining;
2) - Room-and-pillar mining;
3) - Blast mining;
4) - Shortwall mining;
5) - Coal Skimming.
Mining can be done by the following methods:
a) - Short-hole and Long-hole mining methods;
b) - Selective and unselective mining methods;
c) - Supported and Unsupported underground mining
methods.
All photos illustred (partial text) are copied from the WEB – Prof. Dr. H.Z. Harraz

METHODS OF SURFACE MINING CONTINUOUS MINERS CEILING WITH SUPPORT
ROTATING DRUM MACHINE - ROADHEADER PNEUMATIC PERFORATORS

ROCK INJECTION
- Fast setting pre-injection systems;
- Cavity filling;
- Ground stabilization;
ANCHORING
- Perfect for vertical and overhead grouting;
- Rock bolting (advanced technology).
INJECTION
- Pre-injection for water stopping and ground consolidation;
- Post-injection for strata consolidation, cavity filling and water stopping.
FIELDS OF APPLICATION IN MINES
- Mine backfill;
- Cavity filling;
- Coal face stabilization;
- Coal and strata consolidation.

GLOBALSTONE-M
THE PNEUMATIC DRIVEN SINGLE
PLUNGER PUMP FOR MINING
ROCK BOLTS CAN BE INSTALLED BOTH INDIVIDUALLY AND WITH SYSTEMATIC BOLTING. SYSTEMATIC BOLTING IS A
PRE-PLANNED PATTRN OF BOLTS BASED ON GEOLOGICAL CONDITIONS, BUT INDIVIDUAL BOLTS ARE ALSO
INSTALLED TO FIX SINGLE LOOSE BLOCKS (NILSEN AND PALMSTROM, 2000)

GLOBALSTONE-M COAL PILLAR
THE PNEUMATIC DRIVEN
SINGLE PLUNGER PUMP
FOR MINING
Allphotosillustredare copied
from the WEB

-“GLOBALSTONE-M”, ORGANO-MINERAL FOAM FOR STRATA CONSOLIDATION

2 Current PUR Injection Design Process
INJECTION ARRAYS. THESE PUMPING PATTERNS CAN HAVE A NUMBER OF CONFIGURATIONS. A
TYPICAL INJECTION PATTERN FOR AN INTERSECTION WILL HAVE INJECTION HOLE ANGLED OVER
THE RIB ON 3 M (10 ft.) CENTERS SPANNING EACH CROSSCUT IN THE INTERSECTION.
“GLOBALSTONE-M” (PUR) MAY BE INJECTED OVER THE RIB ON EACH SIDE OF THE INTERSECTION.
THESE INJECTIONHOLES WILL BE PACKED OFF THE DESTABILIZED ZONE, AND THEN (PUR)
“GLOBALSTONE” IS INJECTED TO ERECT A “GROUT CURTAIN” WHICH ACT AS A BARRIER AND PERMIT
INFILLING OF THE INTERSECTION. THE HOLES ARE EITHER PUMPED TO A PREDETERMINED VOLUME
OR PRESSURE OR INJECTED TO REFUSAL. THE HOLES WILL BE DRILLED AND PUMPED IN THE
CENTER OF THE INTERSECTION TO COMPLETE INFILLING OF THE PATTERN. THE EXACT
SPECIFICATIONS OF THE DESIGN ARE OFTEN DETERMINED BY EXSPERIENCE OF THE CONTRACTOR.
REINFORCING COAL MINE ROOF WITH POLYURETHANE INJECTION:
4 CASE STUDIES
Gregory Molinda
Pittsburg Research Laboratory, National Institute for Occupation Safety and Health – NIOSH , Cochrans Mill Road,
P.O. Box 18070, Pittsburgh, PA, U.S.A.

GLOBALSTONE-LV50
ROCK BOLTING SYSTEM FOR MINING
ANCHORAGE OF A BLOCK WITH COHESION ON THE BOARDS
IDEALLY MOUNTED PNEUMATIC OR HYDRAULIC HAMMER DRILLS
ARE USED
“GLOBALSTONE-SERIES” IS
A RAPID-HARDENING AND
RAPID- CURING SILICATE
RESINS.
“GLOBALSTONE SERIES”
MAY BE USED WITH
OVERHEAD BOREHOLES WITH
LARGE DIAMETERS AS WELL
SINCE IT HARDENS VERY
QUICKLY RIGHT AFTER
MIXING.
ONCE BOTH COMPONENTS
HAVE BEEN MIXED
TOGETHER, THE RESIN
BEGINS HARDENING,
BECOMES VISCOUS AND
CANNO T FLOW EVEN INTO
LARGECRACKS ON ITS OWN
BUT HAS TO BE PUMPED IN

MECHANICALLY ANCHORED BOLTS
“TAMROCK ROBBOLT” FULLY MECHANIZED BOLTING UNIT MECHANICALLY ANCHORED BOLTS
ARE USUALLY WEDGE OR
EXPANSION-SHELL BOLTS THAT
ARE POINTANCHORED AT THE
BOTTOM OF THE HOLE.
THE BOLT HAS AN EXPANDING
ANCHOR AT ITS END. AFTER
INSERTION, THE BOLT IS EITHER
ROTATED OR PRESSED/HAMMERED
AGAINST THE BOTTOM OF THE
HOLE. THIS EXPANDS THE WEDGED
END AND ANCHORS THE BOLT
FIRMLY TO THE SIDES OF THE
HOLE. TO INSTALL ANCHORED
BOLTS SUCCESSFULLY, THE HOLE
SIZE MUST BE ACCURATE AND THE
ROCK MUST BE RELATIVELY SOLID.
WEDGE OR EXPANSION-SHELL
BOLTS ARE TYPICALLY MEANT FOR
TEMPORARY ROCK SUPPORT.
TOGETHER WITH CEMENT
GROUTING, IT PROVIDES BOTH
IMMEDIATE AND LONG-TERM
SUPPORT.

GROUND
TBM-EPB
COLLAPSED
GROUND GROUND

EXAMPLE OF PROTECTION OF
MANUFACTURED AND STABILITY OF
'THE LAND BEFORE DIGGING A
TUNNEL FOR UNDERGROUND
EXAMPLE OF CONSOLIDATION TYPE
“TENT" UNDER THE ROADS AND
MANUFACTURED BEFORE DIGGING A
TUNNEL FOR UNDERGROUND
“JET-GROUTING” OR CHEMICAL RESIN
“GLOBALSTONE-M” OR “GLOBALSTONE-LV50”
The serious problem is solved with the "GLOBALSTONE-M” or “GLOBALSTONE-LV50”

EXAMPLE OF CONSOLIDATION OF
MANUFACTURED WITH POLES TYPE “JET-
GROUTING" BEFORE DIGGING A TUNNEL
FOR UNDERGROUND
EXAMPLE OF A CONSOLIDATION OF
RAILWAY LINE WITH POLES TYPE “JET-
GROUTING" BEFORE DIGGING A TUNNEL
FOR UNDERGROUND
“JET-GROUTING” OR CHEMICAL RESIN
“GLOBALSTONE-M” OR “GLOBALSTONE-LV50”
The serious problem is solved with the "GLOBALSTONE-M” or “GLOBALSTONE-LV50”

COLLAPSED
COLLAPSED

INJ ECTION RESIN “GLOBALSTONE-LV50”
Protectionofstructure
with:
GLOBALPOX-MALTA
RADIOACTIVE LIQUID
..life continues…
TYPICAL REPAIR SCHEME

GLOBALCHIMICA SRL is an Italian limited liability company, etablished in 1949 and
situated in Lombardore, in the North of Italy, at 20 Km from Turin and 180 Km from
Genoa, one of the bigger port of Italy. Manufacturer of chemical products for the
building, mould making and mining/tunnelling sector, Globlachimica’s factory size is of
4.500 covered square meters on a total surface of 9.700 m2.
LAMANNALUIGIFRANCO
TechnicalSalesManagerofGLOBALCHIMICADPTTunnelandMining

GLOBALCHIMICA SRL has consolidated experience on the mains markets, exporting since
1980 in Eastern Europe, North and South America, Mid East and Southeast Asia, with an export
percentage of 60 - 70 % on the total annual sales.
Internal structure of the Company is essencial but efficent. With 10 specialized employees on
the production line, team of R&D, Commercial - Export department, and Administration.
RESEARCH AND DEVELOPMENT (R&D) : GLOBALCHIMICA SRL has a modern research
and development laboratory, for controlling raw materials and finished products. This allows, to
carry out elaborate organic syntheses independently in the preparation of special raw materials
and complex formulae.
QUALITY CONTROL: Company’s main purpose is customer satisfaction. To realize this aim,
helped from equipments endowed with very high technology, products are subjected to a
process to verify that all the mains features are satisfied (Density, Viscosity, Consistency,
Dynamometer tests, FTIR and other spectral controls, Chemical analysis, etc.).
TECHNICAL COMMERCIAL DEPARTMENT: E.P.C. CONSULTING SRL (Exclusive world) –
Manager: Lamanna Luigi Franco Beside internal commercial-export department, profitable is a
cooperation for Tunnelling and Mining sector with engineers and commercial assistants located
in ROME (ITALY).
CERTIFICATION : since the end of 2007, GLOBALCHIMICA SRL is working to develop ISO
9001 certification, obtained at the beginning of 2010.

Company is shared in 4 divisions :
•Tunneling and mining : Resins for stabilising ground/rock before and after conventional
digging or with TBM through injections.
•Building : GLOBALCHIMICA SRL produces a comprehensive range of paints, protective
coatings and special formulae for building and various purposes, including waterproofing road
planking, terrace roofs, car parks, tanks, aqueducts, protective coating of bridges, viaducts,
facings, forced ducts, corrosion-proofing of chemical and industrial plants; low, medium and
high thickness coating of industrial and domestic floors, structural consolidation of major
construction works (tunnels, bridges, viaducts, railways), monumental and civil restoration.
•Mould making : Production and marketing of Room Temperature Vulcanizing RTV2 silicone
rubbers and polyurethane rubbers for moulds and matrices. Epoxy formulae for moulds and
matrices.
•Defense : Production of special paints suited for protection and camouflage of military
equipments.

INDEPENDENT CONSULTANT TUNNELING , MINING AND OIL
SPECIALIZED IN MECHANIZED TUNNELING WITH HARD ROCK
TBM AND SOFT SOIL EPB SHIELDS
EXPERT AND CONSULTANT IN STRUCTURAL REINFORCEMENT
LAMANNA Luigi Franco, performs for 44 years professional consulting and technical
direction in the various sectors of civil, industrial, military, hydraulics, railway,
highway and recent years in the sector of “tunneling” and “mining” on the correct
use of special “resin” and related technologies for consolidation, repair and
maintenance of masonry, concrete, iron and wood.
Is the author of numerous scientific publications and is always engaged in the study
and development of “innovative materials” and related techniques and technologies
used.

- MAINTENANCE OF AIRPORT PAVEMENTS, ROAD TRANSPORT AND CONDUCTIVE/DISSIPATIVE
PAVEMENTS
- INJECTION RESINS SYSTEM IN TUNNELLING, MINING AND CIVIL ENGINEERING
- DAMS and BRIDGS - REPAIR, PROTECTION AND REINFORCEMENT OF STRUCTURAL
CONCRETE
- SOLUTIONS FOR PRE-EXCAVATION GROUTING IN ROCK TUNNELING AND MINING

Provide strong engineering solutions for our clients by
planning, designing and supervising construction of
infrastructure projects in the fields of energy, transportation,
resources, urban and public sector development.
- Hydropower - Tunnels
- Railways - Mining
- Roads - Bridgs
LAMANNALUIGIFRANCO
IndependentTechnicalConsultant

EXPOSURE OF OUR PRODUCTS IN INTERNATIONAL TRADE FAIRS

GLOBALCHIMICA srl
16-18, via del Boschetto
10040 LOMBARDORE (TORINO) – ITALY - U.E.
e-mail: info @ globalchimica.com
TECHNICAL AND COMMERCIAL DEPARTMENT:
DIVISIONS:
- TUNNELLING
- MINING
- OIL
- CIVIL ENGINEERING UNDERGROUND ENG.
- TBM-EPB (GREASE-SEALANTS, SOIL CONDITIONING FOAMS AND POLIMERS)
Mr. LAMANNA LUIGI FRANCO
132, via dei Serpenti – 00184 ROME – ITALY - U.E.
e-mail: lamannaluigifranco1 @ gmail.com

Luigi Franco, Mr. LAMANNA
132, via dei Serpenti – 00184 ROME, ITALY, U.E.
INDEPENDENT TECHNICAL CONSULTANT
Tunnelling Consultant Specialized in Mechanized Tunnelling with
Hard Rock TBM and Soft Soil EPB Shields
Expert and Consultant in structural reinforcement
e-mail: lamannaluigifranco1 @ gmail.com

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