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.
出处
《土木工程学报》
EI
CSCD
北大核心
2005年第5期82-86,共5页
China Civil Engineering Journal
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
drift in soft rock
bolt-grout support
parameters of ro ck mass
displacement-based inverse analysis algorithm
stability evaluation
