摘要
针对岩石具有应变软化和剪胀的特点,推导了巷道围岩松动圈理论计算公式,理论分析了巷道埋深、围岩强度、应变软化程度以及支护阻力对围岩稳定性的影响,提出了锚喷、锚注和锚索“三锚”支护的新概念,并成功地应用于工程实践,取得了良好的技术和经济效益。
Based on the rock characteristics of strain-softening and dilatancy, this paper developed a theoretical formula for calculating broken zone thickness of roadways, analyzed the influence of buried depth, rock strength, strain-softening extent, and support pressure on the surrounding rock stability of the deeply buried roadways. The new concept of 'three bolting' support is put forward, which refers to a supporting method combining bolt and shotcrete, grout, and anchorage cable. This new supporting method has been applied to engineering practice; and favorable technical and economic benefit is obtained.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2005年第6期877-880,888,共5页
Rock and Soil Mechanics
基金
国家自然科学基金项目资助(50474063
50490273)
