高应力软岩硐室围岩控制及数值模拟研究  

Study on Control and Numerical Simulation of Soft Rock Chamber in High Stress

作　　者：郝亚勋 

机构地区：[1]郑州工业应用技术学院建筑工程学院,郑州451100

出　　处：《煤炭技术》2018年第1期66-69,共4页Coal Technology

基　　金：青年教师科研基金资助项目(20170607)

摘　　要：鹤壁九矿-420水平31采区避难硐室多次返修,认为其处于高应力下的软岩流变岩层中,提出锚索+深浅部锚杆交错注浆+对穿锚索的硐室围岩加固方案。采用数值模拟方法对原支护与返修加固方案进行对比。结果表明:原支护条件下硐室断面收缩率达91.1%,顶板最大下沉量达到1 387 mm,围岩处于加速蠕变阶段;采用新的加固方案后顶板最大下沉量仅58 mm,围岩处于稳定蠕变阶段。The refuge chamber repeated repair in Hebi No.9 mine -420 level of 31 mining area, it is in the soft rock rheology in highly stress, put forward the chamber scheme of the surrounding rock, shallow-deep hole full cross-section bolt grouting and two-ended cables. Using the numerical simulation method to comparison the original support scheme and reinforcement scheme. The results showed that the shrinkage rate of the chamber section was 91.1% under the condition of the original support, the maximum roof subsidence reached 1 387 mm, the surrounding＂ rock in the stage of accelerated creep; the maximum roof subsidence is only 58 mm after the new reinforcement scheme, the surrounding rock is in the stage of stable creep.

关 键 词：高应力 软岩硐室 流变 数值模拟 

分 类 号：TD354[矿业工程—矿井建设]