边坡岩体抗剪强度参数多重反演方法研究与应用  

Application of multiple inversion method for shear strength parameters of slope rock mass

作　　者：王东[1] 宋伟豪 姜聚宇 杜涵[1] 吴国辉 WANG Dong;SONG Wei-hao;JIANG Ju-yu;DU Han;WU Guo-hui(College of Mines,Liaoning Technical University,Fuxin 123000,Liaoning,China;Angang Mining Design and Research Institute,Anshan 114000,Liaoning,China)

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000 [2]鞍钢集团矿业设计研究院,辽宁鞍山114000

出　　处：《安全与环境学报》2021年第6期2557-2563,共7页Journal of Safety and Environment

基　　金：国家自然科学基金面上项目(51874160);辽宁省高等学校创新人才支持计划项目(LR2016039)。

摘　　要：为了解决分析推动式滑坡时多个边坡岩体抗剪强度参数难以同时测定的难题,基于剩余推力法理论,提出了边坡岩体抗剪强度参数多重反演方法,确定了参数多重反演方法的基本原理和计算流程,将该方法应用于白音华一号矿北帮滑坡的工程实例中,并采用实验室试验方法进行验证。结果表明:通过岩体抗剪强度参数多重反演方法计算得出白音华一号矿北帮的泥岩和弱层的内摩擦角分别为25.5°、7.9°,岩体抗剪强度参数多重反演方法计算结果与实验室试验结果具有显著的一致性;运用该方法可有效解决多个抗剪强度参数同时反演问题,减少计算工作量,具有广泛的适用性。To solve the problem that it is difficult to simultaneously determine the shear strength parameters of multiple slope rock mass of push-type landslide,and make up for the defect of traditional parameter inversion methods,a multiple inversion method for shear strength parameters of slope rock mass based on the residual thrust method is proposed,and the basic principle and calculation process of the method are determined.The method is successfully applied to the north of Baiyinhua No.1 coal mine.In the engineering example of bang landslide,the accurate shear strength parameters are provided for the landslide treatment of Baiyinhua No.1 mine,and the shear strength parameters are used in the subsequent slope shape design,which shortens the landslide treatment time,speeds up the speed of comprehensive recovery of production,and reduces the loss caused by the landslide to the minimum.A large number of samples are taken back to carry out experiments.The accuracy of the multiple inversion method for shear strength parameters is verified by laboratory tests.The results show that the internal friction angles of the mudstone and weak layer in the north side of Baiyinhua No.1 mine are 25.5° and 7.9°,respectively.Through the laboratory test method,the internal friction angle of the weak layer is 9.36°.Since there are a lot of coal chips in the sample and the experimental result is too large,the recommended value range of the weak layer experiment is 7.5° to 9.36°.The calculation results of the multiple inversion method for shear strength parameters of rock mass are significantly consistent with the laboratory test results.The method can effectively solve the problem of simultaneous inversion of multiple shear strength parameters,reduce the calculation workload,and provide a theoretical basis for solving similar problems,which has wide applicability.

关 键 词：安全工程 抗剪强度参数 组合式滑坡 多重反演 剩余推力法 

分 类 号：X936[环境科学与工程—安全科学]