东海煤矿锚杆及注浆支护模拟

A Simulation of Bolting and Grouting Support for Donghai Coal Mine

以鸡西东海煤矿实测数据为基础,采用实验测量与数值模拟相结合的方式对东海煤矿弧形底角锚杆数量进行模拟同时模拟研究巷道围岩在注浆前后,巷道围岩应力分布情况,分析研究巷道围岩注浆后应力变化。通过模拟结果找出减小底角处由应力集中所造成的损害和增加底角围岩自身的承载能力的有效方法。

This paper is based on the real data of Donghai Coal Mine in Jixi.Combining the experimental measurements and numerical simulations,we simulate not only the number of bolting in arc-shaped bottom of Donghai Coal Mine but also the distribution of surrounding rock stress both before and after grouting the roadway,and furthermore,we analyze the stress changes of roadway surrounding rocks after grouting.What＇s more,we are dedicated to finding out the effective way to reduce the corner damages resulted from the concentration of bottom stress and to increase the carrying capacity of the bottom surrounding rocks.