This paper expounds the geological structure in the tunnel of a certain engineering, analyzes the reasons why the self-advancing hollow grouting anchor construction is selected in the hydrous rockmass, and introduces in detail the scheme analysis, design, construction parameter, problems, and treatment measures, etc.

This article analyzes vertical transportation program in concrete construction of high and steep slope,by introducing power-bearing principle,functional parameter,design elements,construction technology essentials and innovation highlights of self-drilling hollow anchor poles.

Application of steel pipes and automatic anchor pole in the tunnel with sandwich;

For construction of surge tank of Sangping hydropower station, the stepping and self-drilling hollow grout injection anchor rods are used in fractured rock at high slope and shallow landslide, resulting in good consolidation and anchorage in the surrounding rock.