Appraisal of water pressure in the stability analysis of earth nail bracing for foundation pit under typical hydrogeologic condition by method of computer\|aided flow net is introduced herein.

An example of soil-nailing support is introduced for a high weak rock slope and the information from construction monitoring is analyzed based on the principle of soil-nailing support.

In many of the foundation pit supporting method, the soil nailing wall supporting technology with the simple and convenient construction method, high safety, low cost, short construction period, low noise, little pollution, and so easy to control operation, has been widely used in lots of Foundation Pit supporting projects.