高地应力条件下围岩稳定性分析及控制  

Analysis and control on stability of surrounding rock with high ground stress

作　　者：汤雷[1] 蒋金平[1] 

机构地区：[1]南京水利科学研究院,江苏南京210024

出　　处：《辽宁工程技术大学学报（自然科学版）》2010年第1期24-27,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50679045);江苏省自然科学基金资助项目(BK2008085)

摘　　要：在对比分析工程实测值和计算值差异的基础上,提出了围岩峰后大变形计算值出现显著偏差的问题;通过对比分析实际围岩和本构实验峰后阶段试块裂缝开展过程和特点,提出峰后阶段本构实验出现失真的问题;在分析岩石力学实验发展过程的基础上,与第一次失真相比较,提出了本构实验的第二次失真;在分析实际围岩大变形及其与支护结构相互作用的基础上,阐明围岩变形过程和支护承载过程不能相互协调是当前支护结构破坏的主要原因;遵循支护与围岩协调承载的基本原则,构思了一种新的衬砌结构形式。Based on the comparative analysis of the differences between measured values and calculated values, it is proposed that the marked calculated values will deviate in the post-peak deformation stage. Based on the comparative analysis of cracking process between engineering surrounding rock and experimental specimens, it is proposed that the constitution relation experiment of.rock will distort in the post peak stage. Based on the analysis of rock mechanics development, compare with the first distortion of rock mechanics experiment, the second distortion of rock mechanics experiment is proposed. Based on the analysis of interaction between surrounding rock with large deformation and the supporting structure, the main reason for the current supporting destruction is clarified that the load process of supporting structure can not be coordinate with the process of the surrounding rock deformation. Follow the basic principles that Supporting should be coordinate with the surrounding rock, a new structure of lining is proposed.

关 键 词：围岩 大变形 峰后 本构实验 

分 类 号：TV672.1[水利工程—水利水电工程]