基于FLAC^(3D)的软岩巷道支护方式对比分析  

Comparative analysis on supporting methods in soft rock roadway based on FLAC^(3D)

作　　者：刘帅[1] 武俊平[2] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京1000832 [2]中国矿业大学(北京)机电与信息工程学院,北京100083

出　　处：《矿山机械》2013年第3期35-39,共5页Mining & Processing Equipment

基　　金：国家重点基础研究发展规划(973)项目(2010CB226801);国家自然科学基金项目(51174213);煤炭资源与安全开采国家重点实验室开放课题资助(SKLCRSM10KFB09);中央高校基本科研业务费专项资金资助(2009QM01)

摘　　要：以辽宁铁法煤业集团小康矿为工程背景,通过分析该矿地质条件,提出一种能够有效控制围岩变形的高强高预紧力支护方式。运用FLAC^3D数值模拟软件,对地质条件复杂的软岩巷道S2N8工作面运输巷,按照实际尺寸分别建立新旧支护方式的数值计算模型。通过分析数值计算结果,对比新旧支护方式下巷道围岩位移和塑性圈范围,得出新型支护方式能够有效控制围岩变形和破坏。对模拟段巷道进行了现场工业试验,并对巷道围岩位移进行监测,证明模拟结果的可靠性。Taking Xiaokang Mine of Tiefa Coal Industry Group as the project background, after analyzing the geological conditions of Xiaokang Mine, a high-strength and high-pretension cable supporting method that could effectively control the deformation of the surrounding rocks was put forward. FLAC3D numerical simulation software was applied to build numerical model of the old and the new supporting method according to actual conditions of $2N8 transportation roadway. Through analyzing the numerical calculation results, displacement of the roadway surrounding rocks and range of the plastic ring in the old and the new supporting mode were compared, and it was concluded that the new supporting method could effectively control the deformation and failure of surrounding rocks. In addition, field test was conducted and the displacement of roadway surrounding rock was monitored in the simulated roadway, the simulation results proved reliable.

关 键 词：复杂地质条件 FLAC^3D 软岩巷道 塑性圈 

分 类 号：TD353[矿业工程—矿井建设]