考虑应变软化和剪胀特性的软岩洞室稳定性分析  

Stability Analysis of Soft Rock Tunnel Considering Strain Softening and Dilatancy

作　　者：王家兴[1] 李晓龙[1] 谢琨[1] 申玉松[1] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059

出　　处：《成都大学学报（自然科学版）》2014年第1期86-88,共3页Journal of Chengdu University（Natural Science Edition）

摘　　要：岩土材料的复杂性使得人们无法采用统一的本构模型来表达其在外力作用下的力学响应特性.无数试验和实际工程表明,莫尔—库仑准则能较好地拟合试验结果和可靠地应用于岩土工程实践.数值模拟可充分发挥主观能动性,采用考虑应变软化和剪胀特性的莫尔—库仑模型进行软岩隧洞的稳定性模拟,以达到更精确地对工程实例进行数值模拟分析的目的.The complexity of geotechnical materials makes it impossible to adopt a unified constitutive mod- el to express their mechanical response under external force. Numerous tests and practical projects show that Mohr-Coulomb criterion can better fit the experimental results and is reliably used in geotechnical engineer- ing practice. The full subjective initiative is taken in simulation, and Mohr-Coulomb model considering strain softening and dilatancy is carried out to simulate the stability of soft rock tunnel in order to achieve a more accurate numerical simulation analysis for engineering cases.

关 键 词：应变软化 剪胀性 软岩洞室 数值模拟 

分 类 号：TD313[矿业工程—矿井建设]