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Meeting Challenges of Ground Stabilisation Tags: soil nailing

The effects of a growing and materialistic population worldwide are creating more and more challenges when it comes to ground stabilization. Pollution, for example, is eroding away soil and rock formations at an alarming rate. Avalanches, mudslides, and falling rocks along some highways are due, in part to extensive erosion. Slope, rock fall, and cliff face protection are needed to avoid threats to safety and the environment.

Excavating and Mining

Large excavation projects for pipelines, fracking purposes, and deeper mining for oil, gold, and diamonds wreak havoc with soil conditions, groundwater systems, underlining rock formations deep underground. Utilizing shotcreting services for retaining walls and safer tunnels can provide some safety and protection to miners, equipment, and the land itself. Encasing pipelines with shotcrete may provide stabilization of the soil, but will do nothing for pipe leaks.

This process is successful where regular concrete fails. The concrete, which can now be added with special fibers for reinforcement, is pneumatically projected through a hose at high velocity. The high velocity makes the concrete compact as soon as it is placed and set rapidly on surfaces. Spraying it onto the tops of tunnels is possible because it sets so fast. The process is also used in civil construction, railways, and residential projects as well.

Soft Soil

Improper drainage, depletion of minerals from the soil, and contaminated groundwater can make soil soft under the surface. In these cases, earth retention techniques are used to solve the problem. Soil support and ground strengthening are accomplished by soil nailing. Special nails are made out of either fiberglass or grouted steel and placed into the ground.

This technique is often used to correct the problem of sinking buildings when preventative ground stabilization methods were not included in the planning stage of construction. Special 3D mapping is done in existing structures to locate any underground tanks, utilities, or supports. This makes the placing of the nails to have maximum effect without interfering with pre-existing obstacles.

Other Methods to Meet Challenges

Drainage drilling, underpinning, and rock bolting are other methods professionals use to stabilize the ground. Scaling, anchor testing, and difficult access techniques are also helpful in protecting people and the planet.


February 2018 (1)
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