Landslide Control Measures at Jumja Slide,Bhutan
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The document discusses landslide control measures implemented at the Jumja landslide in Bhutan. The 50+ year old landslide regularly damaged the Phuentsholing-Thimpu road. Stabilization efforts from 2000-2006 included retaining walls, drainage improvements, and slope stabilization. A long-term investigation recommended additional measures like rock bolting, benching, gabion walls, check dams and exploring a tunnel option to fully address the persistent landslide issues.
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Folds and faults have important effects from a civil engineering perspective. Folds can provide favorable conditions for dam foundations if the beds dip gently upstream, allowing resistance to water pressure. They can also prevent water leakage. Tunnels are best located along fold limbs to avoid fractures. Faults greatly weaken and fracture rock, making areas unsuitable for foundations. They can cause water leakage and landslides. Joints also weaken rock strength and allow water movement, requiring precautions for dams, tunnels and slope stability. The effects of structures like folds, faults and joints must be considered for safe civil works planning and construction.
hillroads-200131051526.pptx
This document discusses the process and considerations for conducting an alignment survey for hill roads. It involves:
1. Reconnaissance survey to select the general route by studying maps, aerial photos, and ground reconnaissance of difficult areas.
2. Trace cut to transfer the selected route onto the ground, constructing a 1-1.2m wide access track.
3. Detailed survey where bench marks are fixed and longitudinal and cross sections are obtained within a 15-30m strip on either side of the road.
Geometric standards like gradient, super elevation and curve radii differ from plains roads due to topography. Drainage structures like side drains and sub-surface drains are important to prevent erosion
Tunneling exploration
The document provides information about tunnel construction. It begins with an introduction and then discusses why tunnels are constructed, the history and classification of tunnels, different tunnel shapes, the tunnel construction process, and various tunnel construction methods. It also outlines the advantages of tunnels. Key points include that tunnels provide underground passages for transportation and utilities, and that modern construction methods include cut-and-cover, drill-and-blast, tunnel boring machines (TBM), and New Austrian tunneling.
Hill roads
Mr. Desai Akshay Prakash
Lecturer in civil Engineering Department.
Sant Gajanan Maharaj Rural Polytechnic, Mahagaon.
Contact No- 9604713468
e-mail- akshaydesai32@gmail.com
Abhishek and tarachand stone columns an over view
This document provides an overview of stone columns, which are columns of compacted aggregate installed in soft soils to improve their load-bearing capacity and reduce settlement. Stone columns function by transferring load to the stiffer column material, allowing drainage of pore water pressures. They are installed using ramming or vibro-replacement techniques. Failure typically occurs through bulging of the column into the surrounding soil. A case study demonstrates that a highway embankment treated with stone columns at 2m spacing experienced 25% less settlement than untreated ground.
Tunnel and Underground Excavation Presentation
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This document discusses important geological considerations for constructing dams. Location, permeability of surrounding rock, and stability are some key factors. Different dam types suit different geological conditions - for example, gravity dams require hard rock foundations while rockfill dams can be built where foundations are less stable. Curtain grouting can restrict seepage in permeable rock. Engineering geology aims to evaluate factors like seismic activity, landslides, and environmental impacts when planning dam projects.
Dams
This document discusses important geological considerations for constructing dams. Location, permeability of surrounding rock, and stability are some key factors. Different dam types suit different geological conditions - for example, gravity dams require hard rock foundations while rockfill dams can be built where foundations are less stable. Curtain grouting can restrict seepage in permeable rock. Engineering geology aims to evaluate factors like seismic activity, landslides, and environmental impacts when planning dam projects.
2015 CDA-Frederickhouse Erosion Control
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Shaft sinking 2
This document provides an overview of shaft sinking methods for underground mining. It discusses traditional methods like wood/steel piling and open caisson as well as more advanced techniques like vertical shaft sinking machines (VSM) and shaft boring systems. The document highlights the advantages of mechanical excavation methods like VSMs in providing higher production rates and safety compared to traditional drill and blast operations. It analyzes case studies of shafts sunk in India and concludes that using advanced technologies could have increased production rates by 30% while improving safety and reducing costs compared to conventional shaft sinking methods.
Comparitive study-of-pile-foundations-with-foundations-on-stone-column-treate...
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Comparison of Stone column and pile foundation irrespective of cost estimation and strength of Structure.Â
RMT Group5 presentation.pptx
The document provides details about the Mumbai Coastal Road Project which includes construction of India's first undersea tunnel. Some key points:
1) A 2.07 km long twin tunnel is being constructed as part of the project, with 1 km being under the sea, making it unique from other tunnels worldwide.
2) India's largest Tunnel Boring Machine (TBM) named 'Mavala' has been deployed to excavate the tunnel and broke excavation records.
3) The tunnels will be 11 meters in diameter and constructed using concrete segmental lining for structural support and stability.
4) Numerical analysis of stress redistribution during various construction stages and the long-term condition will be conducted
Design of earth dam at gorukallu
Actual site pictures depicting the construction of dam, equipments used, failure criteria analysis in detail, calculation in detail from the drawings
Tunnelling
This document discusses tunnels, including their purposes, types, geological considerations, lining, and cross sections. Tunnels are underground passages dug for transportation or utilities. They are classified by the material passed through (hard rock, soil, etc.) or purpose (traffic, conveyance). Proper geological investigation is important for tunnel construction to understand rock properties, structures, and groundwater. Tunnels in loose materials require lining to prevent collapse. Common linings are reinforced concrete due to strength, durability and ease of use. Cross sections depend on construction method and ground conditions, and are usually circular, rectangular or horseshoe shaped.
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Landslide Control Measures at Jumja Slide,Bhutan
- 1. Land Slide Control Measures: A Case Study Of Jumja Land Slide In Western Bhutan S K Pradhan, Border Roads Organisation, New Delhi
- 2. Land Slide Control Measures In BRO
- 3. JUMJA SLIDE PHUENTSHOLING-THIMPHU ROAD IN BHUTAN
- 4. JUMJA AH-48
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- 6. ANOTHER VIEW OF JUMJA LSIDE
- 8. Jumja slide
- 9. jumja
- 10. Â
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- 13. Fmn cuttings 400 mtr GSB 15 Cm D/Layer 400 mtr S/R/Wall 75x3 mtr (in 3 Steps) S/R/Wall 75x4 mtr (in 4 Steps) S/B/Wall 50x2 mtr (in 2 Steps) Fmn Washed away from Km 41.400 to 41.800 400x6 mtr 2000-01 6 C/R/Wall 24x6 mtr S/B/Wall 70x3 mtr Fmn Breached at Km 41.55 of size 24x3.00 mtr 2001-02 5 S/Wall 20x12 mtr Fmn Breached at Km 41.70 of size 20x3.50 mtr 2002-2003 4 NIL 2003-04 3  Sausage T/wall 20x5 mtr Sausage R/wall 24x6 mtr Fmn damaged Km 41.730 20x3.10 mtr  Km 41.550 to 41.650 Sausage carpeting 100x11 mtr Km 41.55 to 41.650  Km 41.370 to 41.550 Sausage carpeting 180 mtr x 5.50 mtr Fmn Sinking Km 41.370 to 41.550 2004-05 2  Fmn cutting HR 150x2.60x4.20 mtr Km 41.60 to 41.75 (150x2.60x3.00)  Fmn cutting SMB 300x2.60x2.30 mtr Fmn Sinking Km 41.30 to 41.60 (300x2.60x2.10) 2005-06 1  Restoration work carried out Damages occurred in Jumja Year S/No
- 14. Detailed Investigation for Long Term Solution.
- 27. Â