基于正交试验的围岩力学参数反演及巷道支护设计  

Back-analysis of Surrounding Rock′s Mechanical Parameters and Roadway Supporting Design Based on Orthogonal Test

作　　者：董宗斌 

机构地区：[1]潞安环能股份公司王庄煤矿,山西长治046031

出　　处：《煤矿开采》2012年第1期49-52,共4页Coal Mining Technology

基　　金：国家自然科学基金资助项目(51074089)

摘　　要：目前科学的锚杆支护设计方法是以计算机数值模拟为基础的动态系统设计方法,由于数值模拟结果的可靠性很大程度上依赖于围岩力学参数的选取,如何确定合理的围岩力学参数是目前锚杆支护设计中最突出的问题。应用正交试验的方法并借助有限差分程序FLAC,对影响巷道围岩稳定的主要围岩力学参数进行了敏感性分析,并以现场实测围岩变形为标准,对围岩力学参数进行了反演。基于反演得到的围岩力学参数和地应力测试结果,运用数值模拟的方法对王庄煤矿5205回风巷进行了锚杆支护设计,并在现场取得了良好的支护效果。At present,scientific anchored bolt supporting design method is dynamical system design method based on computer numerical simulation.Reliability of simulation results largely depends on mechanical parameters of surrounding rock,so how to rationally select these parameters is an urgent problem in anchored supporting design.Applying FLAC,sensitivity of main mechanical parameters influencing stability of surrounding rock was analyzed by orthogonal,and the parameters were obtained by back-analysis with field deformation data of surrounding rock.Applying the back-analyzed parameters and geo-stress test results,anchored supporting for air-return roadway of 5205 mining face in Wangzhuang Colliery was designed.Actual application effect was excellent.

关 键 词：正交试验 参数反演 支护设计 地应力测试 

分 类 号：TD350.1[矿业工程—矿井建设]