The area was narrow, vulnerable to erosion and with steep slopes. The slopes alongside of roads were needed to be protected and so that Highway do not gets damaged. This work of slope stabilization was given to Geo Spar Infra Pvt Ltd.
Our Work:
Team of civil engineers and geologist from Spar Geo analyzed the site and clearly defined the well thought methodology and sequence of work.
This project was aimed to stabilize the slope using high performance netting and rolled cable net in combination with 38 mm dia Self drilled Anchors along a stretch of 800 m.
The work started with Cleaning of Debris.
Geo Spar used hanging masts for climbing and installation of Self Drill Anchors. Grouting was done to create the bonding between SDA and surrounding soil.
Galvanized Spike Plate is placed over Self drilled anchor by using Nuts. This spike plate helps to make intact contact between wire mesh and slope.
Difficulties faced while execution:
The Site was at far isolated place, deep inside the hills under severe living conditions. The machinery/equipment/spares etc. had to be carried at work site through hill road from nearest point in plains at “Haldwani” 200Kms. away.
Drilling of SDA in the weathered rock, at steep mountains was the issue.
With heavy monsoon showers caused floods with the nearby river swelled twice its size and erosion and fall of debris encountered.
Achievements:
We protected the Highway and thus Geo Spar’s mission to provide fast and efficient services with lasting solutions was achieved.
Fig 2: Typical pattern of self-drill anchors with HT wire mesh system (left), Ground anchor and cladding wall system (middle), Mechanism for cable anchors (right)
Shotcrete is an all-inclusive term to describe the spraying of concrete or mortar either by a dry- or a wet-mix process which is commonly used to provide surface reinforcement between blocks of rock and also to reduce weathering and surface scaling.
Spar Geo Infra Rock fall barriers Solutions Provide are used to catch/hold at its position so as to protect roadside and infrastructure. Installing rock fall barrier system holds better where it is difficult to use other systems as defined above. The barrier can resist higher load compared to rigid concrete retaining wall. Different ranges of rock falls barriers are available as per kinetic energy that is impacting the barrier (500 kJ-5000kJ). Optimum location and height of post is decided based on trajectories.
Fig 3: Flexible rock fall protection barrier with components details
Mechanically stabilized earth embankments are system for constructing fills at very steep to vertical angles without the use of supporting structures at the face of the fill. The system uses horizontal layers of flexible metal strips within the fill to form a composite earth-metal system with high strength.
Micropiles are small diameter drilled and grouted friction piles comprising steel elements in each pile that are bonded into the bearing soil or rock usually with cement grout. The bearing stratum is logged during installation drilling to assure that bearing capacity is adequate. Micropiles do not rely on end-bearing capacity, so there is no need to establish the competency of rock beyond bond-depth.
Fig 4: Series of pile system to control the movement of unstable mass
Ground improvement techniques: – It includes (a) Tube-A-Manchette grouting, in which holes are drilled around the circumference at equal intervals and each hole is covered by a rubber sleeve which allows only one way (outward) movement of grout. (b) Rock fissure grouting for sealing the fissures in the rock zone (c) Compaction grouting (low mobility grouting) that displaces and densities loose granular soils, reinforces soils and stabilizes subsurface voids or sinkholes. (d) Jet grouting (high velocity fluid jets) is a grouting technique that creates in situ geometries of soil Crete, using a grouting monitor attached to the end of a drill stem.
Fig 5: TAM grouting process (left), TAM grouting followed by (1) Drilling at required depth (2) Installation of TAM (3) Sleeve grouting (4) TAM grouting at desired zone
Spar Geo Infra is a specialized Geo Engineering Company with more than 30 years of experience in designing and executing complex Geo technical Projects. Read case studies of our work and review our achievements in a variety of sectors.
About Us
Spar Geo Infra is a specialized Geo Engineering Company with about 26 years of experience in designing and executing complex Geo technical and Civil Engineering Projects.
About Us
Our Engineering team analyses and provides well established geo-technical solutions for:
You’re going to publish a post today. Don’t worry about how your blog looks. Don’t worry if you haven’t given it a name yet, or you’re feeling overwhelmed. Just click the “New Post” button, and tell us why you’re here. Setting up and nurturing novel, useful, beneficial and growth-oriented business concept with well-defined Environmental, Social, Health and Safety (ESHS) management plans, efficient and acclaimed Quality policy, competitive working with logistic academic supports and advanced technology aiming to deliver best and to customer satisfaction, research and continuous Improvements. You’re going to publish a post today. Don’t worry about how your blog looks. Don’t worry if you haven’t given it a name yet, or you’re feeling overwhelmed. Just click the “New Post” button, and tell us why you’re here.
To strive for a Goal to achieve steady growth in targeted versatile operational fields, using most advance technologies and resources with dedication and commitment without limiting to any regional limits and boundaries.
You’re going to publish a post today. Don’t worry about how your blog looks. Don’t worry if you haven’t given it a name yet, or you’re feeling overwhelmed. Just click the “New Post” button, and tell us why you’re here. Setting up and nurturing novel, useful, beneficial and growth-oriented business concept with well-defined Environmental, Social, Health and Safety (ESHS) management plans, efficient and acclaimed Quality policy, competitive working with logistic academic supports and advanced technology aiming to deliver best and to customer satisfaction, research and continuous Improvements. You’re going to publish a post today. Don’t worry about how your blog looks. Don’t worry if you haven’t given it a name yet, or you’re feeling overwhelmed. Just click the “New Post” button, and tell us why
Mr. S. K. Goyal established the enterprise in the year 1992 in Delhi. The company in it’s formative years bagged prestigious projects from PWD (Public works Department),Irrigation department and various government departments and corporates across India in the states of Gujrat, Rajasthan, Himachal Pradesh, Sikkim, Assam,, Arunachal Pradesh, Karnataka, Delhi. Most of our Clients are repeat Clients, standing testimony to the solid relationships which we build over time by appreciating and responding to their needs, by providing fast, reliable, cost-effective Geo-technical and solar solutions.
Because it gives new readers context. What are you about? Why should they read your blog?
Because it will help you focus you own ideas about your blog and what you’d like to do with it.
The post can be short or long, a personal intro to your life or a bloggy mission statement, a manifesto for the future or a simple outline of your the types of things you hope to publish.
Rockfall catchment fences were developed to protect infrastructure, utilities, buildings and lives from falling debris. Typical catchment fences are installed in run-out or deposition zones, close to the elements at risk that they protect.The structure was tested as per ETAG 27 and manufactured in accordance with the European Technical Approval.
Rockfall barriers are avaiable from 100kJ to 2000kJ and the Foundation design and construction depends on site conditions
Rockfall catchment fences were developed to protect infrastructure, utilities, buildings and lives from falling debris. Typical catchment fences are installed in run-out or deposition zones, close to the elements at risk that they protect.The structure was tested as per ETAG 27 and manufactured in accordance with the European Technical Approval.
Rockfall barriers are avaiable from 100kJ to 2000kJ and the Foundation design and construction depends on site conditions
Can’t think how to get started? Just write the first thing that pops into your head. Anne Lamott, author of a book on writing we love, says that you need to give yourself permission to write a “crappy first draft”. Anne makes a great point — just start writing, and worry about editing it later.
Can’t think how to get started? Just write the first thing that pops into your head. Anne Lamott, author of a book on writing we love, says that you need to give yourself permission to write a “crappy first draft”. Anne makes a great point — just start writing, and worry about editing it later.
Slope Protection (Soil Nail / Self Drilling Anchor with Drapery System) at Kapkot District Bageshwar
The area was narrow, vulnerable to erosion and with steep slopes. The slopes alongside of roads were needed to be protected and so that Highway do not gets damaged. This work of slope stabilization was given to Geo Spar Infra Pvt Ltd.
Our Work:
Team of civil engineers and geologist from Spar Geo analyzed the site and clearly defined the well thought methodology and sequence of work.
This project was aimed to stabilize the slope using high performance netting and rolled cable net in combination with 38 mm dia Self drilled Anchors along a stretch of 800 m.
The work started with Cleaning of Debris.
Geo Spar used hanging masts for climbing and installation of Self Drill Anchors. Grouting was done to create the bonding between SDA and surrounding soil.
Galvanized Spike Plate is placed over Self drilled anchor by using Nuts. This spike plate helps to make intact contact between wire mesh and slope.
Difficulties faced while execution:
The Site was at far isolated place, deep inside the hills under severe living conditions. The machinery/equipment/spares etc. had to be carried at work site through hill road from nearest point in plains at “Haldwani” 200Kms. away.
Drilling of SDA in the weathered rock, at steep mountains was the issue.
With heavy monsoon showers caused floods with the nearby river swelled twice its size and erosion and fall of debris encountered.
Achievements:
Slope Protection (Anchored Wall) at Teesta Dam site
In the dam area along the spillway access landslide occurred. This area has variable strata which is very prone to landslide. Due to the presence of this landslide prone area there are only two options left, first is to change the spillway access and next to protect that area. The changing of main spillways access is not feasible, so decision to protect the landslide prone area along the spillways was chosen.
Solution suggested by us:
The slope protection work was awarded to Spar Geo Infra Pvt Ltd and the team visited the site and took sections of the slope for analysis. The analysis of slope was carried out and was found that soil nails are not so effective in this variable strata, therefore anchors with cladding wall was proposed for the slope protection. Geo Spar designed the wire anchors for the slope by taking proper factor of safety and optimum performance by keeping safety and economic considerations in account which will prove to be best for client. The anchor of 100 ton capacity of 20 meter length at the inclination of 150 with spacing of 3×3 meters are purposed and will be tested for the design loads as per the codal provisions. The thickness of cladding wall 500 mm.
Difficulties faced while execution:
The area comprises of 30 to 35 meter over-burden due to which drilling of anchors was very difficult. To overcome these difficulties, tools were imported. While driving casing, case shoe was getting damage due to the presence of variable strata in which boulders were encountered during the process of driving of casing.
Extra Technology used for execution:
Spar Geo Infra Pvt Ltd used special machines of Atlas Copco to execute the slope stability work in this variable strata which have boulders present in between them.
Achievements:
The beauty of this project is that the slope stability system withstood an earthquake of magnitude 7 on the Richter scale whose epicenter was near the site caused major damage to the dam body as well as spillway. This shows our solution reliability and success of our design as well as our perfect execution of slope stability work.
Inverted Pendulum Drilling at Subansiri Lower Dam site
The Subansiri Lower Dam, officially named Subansiri Lower Hydroelectric Project (SLHEP), is an under construction gravity dam on the Subansiri River in NorthEastern India. It is located 2.3 km (1.4 mi) upstream of Gerukamukh village in Dhemaji District and Lower Subansiri District on the border of Assam and Arunachal Pradesh states. The concrete gravity dam is designed to be 116 m (381 ft) tall, measured from the river bed and130 m (430 ft) from foundation. Its length will be 284 m (932 ft) and the dam will have a structural volume of 2,250,000 m3 (2,942,889 cu yd). The reservoir created by the dam will have a gross storage capacity of 1.37 km3 (1,110,677 acre·ft), of which 0.44 km3 (356,714 acre·ft) can be used for power generation or irrigation. The gravity dam is prone to high instability due to the water pressure and deviation cause due to the water pressure should be within limits, to ensure the deviation within limits continuous monitoring is required. Therefore, government decided to put a pendulum arrangement on the dam walls to measure the deviation causing due to water pressure so that water can be realized whenever deviation is getting out of limits.
Execution
The pendulum system is installed on the wall by Spar Geo Infra Pvt Ltd accurately for measurement and keeping monitoring continuously over the deviation of wall caused due to water pressure. As soon as deviation is observed getting greater than permissible limits water is released from the dam and walls are prevented from undergoing excess of deviation.
Difficulties faced while execution:
For installation of pendulum system vertical hole of 300 mm diameter has to the depth of 100 meter. While drilling hole maintenance of vertical alignment is major issue because slight deviation from 90 degree angle will lead to great deviation at 100 meter depth.
Extra Technology used:
Pendulums are simple, and very reliable and accurate systems used to monitor internal lateral deformations of concrete dams, dam foundations and abutments, tall industrial buildings and bridge piers. The inverted pendulum uses the same readout units, and includes a stainless steel wire anchored in the structure foundation with a float fixed at its upper end. The float, which is free to move in a tank, tensions the wire and keeps it vertical. Once anchored in stable point in foundation it measures absolute deformation of the structure and it’s used as a reference for surface geodetic surveying.
Achievement:
Erosion Control (Micropile) at Subansiri Lower Dam site
The slope over which light house was built is prone to instability because of river flow scouring of toe is taking place as well as the zone comes under high seismic and heavy rainfall zone. The toe of the slope need to be protected because this instability can cause failure of slope which can lead damaging power house. Therefore, task of protecting slope toe is entrusted to Spar Geo Infra Pvt Ltd.
Solution suggested:
Drilling of 200mm Dia and Installation of Micropile with Casing. Geo Spar conducted the reconnaissance of the site to observe the site constraints and feasibility of various slope protection methods. Geo Spar engineers decided to go for slope protection via mircopile with casing. Design Engineers of Geo Spar designed the micropiles of diameter 200 mm for stability of ground to counter scouring action of river. Casing is driven to give extra strength and corrosion protection to micropiles so that system can perform efficiently in countering scouring action of river.
Difficulties faced while execution:
While grouting the micropile the grout comes in contact with water and water-cement ratio gets change. The maintenance of water-cement ratio of grout is task in itself. Secondly grout get washed away due to the river flow before achieving its desired strength.
Extra Technology used for execution:
Special admixtures are mixed into the grout used for grouting micropile so that grout can achieve its desired strength before getting washed away.
Achievements:
The toe scouring is completely stopped after installation of micropiles and the light houses gets protected without disturbing the flow of river even after regular rainfall occurence.
Spar Geo Infra Pvt. ltd 