Study on influence of water to composite soil Nailing support and preventing&controlling

By analysis of mechanism of water to soil and water to nail action, the paper expounds that composite soil-nail support can transfer environment soil and effectively control deformation of foundation pit. Effect of composite soil-nail support was better than common soil-nail. In the process of foundation pit support design with seepage, the action of soil softening was considered. Cohesion(c) and internal friction(Φ) select parameter of saturated soil. In the earth pressure calculating, seepage is considered. Through practice engineering,composite soil-nail support was effective measures to process slop sliding accident, it is beneficial to similar speedy rescue work and support of foundation pit.