Soil nailing technique for stabilization of the natural or manmade soil slope
Sinorock is please to be the consultant for execution and to design the soil nailing technique for stabilization of the natural or manmade soil slope. We have been regularly using this technique for the stabilization of the soil slope in different challenging environments with satisfactory approach. The theory of the soil nailing and its application is discussed below for observation and consideration of the facts of this technique. It is completely our pleasure to take an opportunity for implementing the applications of this technique.
The soil nailing is the technique which is use to reinforce the existing ground by increasing the normal loads (and hence the shear strength) on potential sliding surfaces through the nails, which is simply consist of steel tendon, but most commonly the tendon is encapsulated in a cement grouted body to provide corrosion and improved load transfer to the ground.
It is an effective an economical method to stabilize the excavated soil face or landslide zone. Soil nail technology was first used in France to build a permanent retaining wall cut in soft rock, whereas the first soil nail wall to use modern soil nailing techniques was built near Versailles in 1972. After that it has been common methodology for the stabilization of the soil mass in different applications. Destabilization of the soil mass caused by the increase in tensile force compare to the compressive force or normal force (resisting force). In this technique nails work predominantly in tension but are considered by some work also in bending/shear in certain circumstances. The effect of the nail reinforcement is to improve stability by a) increasing the normal force and hence the soil shear resistance along potential slip surfaces in frictional soils and b) reducing the driving force along potential slip surfaces in both frictional and cohesive soils. A construction facing is also usually required and is typically shotcrete reinforced by welded wire mesh. In soil nailing, the reinforcement is installed horizontally or sub – horizontally, which would be approximately parallel to the direction of major tensile straining in the soil to minimize the tensile force and to maximize the resisting potential of the soil mass through nail-ground interactions.