岩体参数反演计算的稳定性研究  

A DISPLACEMENT-BASED INVERSE ANALYSIS OF ROCK MASS PARAMETERS FOR ROCK STABILITY EVALUATION

作　　者：张乐文[1] 丁万涛[1] 李术才[1] 

机构地区：[1]山东大学

出　　处：《土木工程学报》2005年第5期82-86,共5页China Civil Engineering Journal

摘　　要：将锚杆支护与围岩注浆相结合,即采用锚注支护,在软岩巷道支护中获得了广泛的应用,但锚注支护岩体参数的确定相当不易。本文从工程实际中比较容易量测的位移入手,采用反分析方法,确定锚注岩体的等效力学参数,为锚注支护巷道围岩稳定性评价及锚注支护参数的合理确定奠定理论基础。The method of bolting and grouting has received wide ap plications.However,it is difficult to determine the parameters of rock mass wit h bolt-grout support.Based on the displacement,which can be measured easily in practice,the method of inverse analysis is employed to calculate the equivalen t mechanical parameters of bolt-grouted rock mass.Three mechanical models were considered: homogeneous elastic model,inhomogeneous elastic model and elastic-p lastic model.The stability of the inverse algorithm is dealt with using a QR de composed algorithm or singular value decomposed algorithm.

关 键 词：软岩巷道 锚注支护 岩体参数 位移反分析 稳定性评价 

分 类 号：TU457[建筑科学—岩土工程]