摘要
根据节理岩体的特性，按弹簧块体理论模拟节理岩体中大型地下洞室开挖与锚杆支护的变形特征。同时，开展了开挖条件下节理围岩变形特性和锚固效应的模型试验研究，得到不同初始地应力场条件下，大型地下洞室分步开挖和锚杆支护的围岩力学行为的变化规律，数值计算结果和实测结果所反映的节理岩体围岩的运动规律基本一致。
A numerical simulation, so-called block spring method, is used to study thelarge deformation of cavern's surrounding jointed rockmass with excavation and bolting.Furthermore, testing study of the deformation characters and boltins effect of surroundingrocks is made under different initial in-situ stresses during excavation and bolting. Thedeformation laws of surrounding rocks obtained from testing are in consistency with thoseof numerical simulation.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
1998年第3期223-229,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金
中国长江三峡工程开发总公司联合资助的国家自然科学基金
关键词
节理岩体
锚杆支护
模型试验
围岩
jointed rockmass, excavation, bolting support, model experiment
