Reliability Analysis of Bolting and Shotcreting on Soft Rock

Soft rock engineering is a subject concerning rock mechanics research,in which the stability analysis of underground soft rock and its support are particularly important.In this paper,the authors use reliability method to analyze the stability of underground soft rock.The reliability analysis equation is used to solve the issues involved under the conditions of bolting and shotcreting at the horizontal layered media and the successive mechanical medium of the main soft rock roadway surrounding.Based on quantitative theory of soft rock support and bolting and shotcreting in classic soft rock support technology,some rules and suggestions for the calculation of anchoring force and bolt spacing are given.