摘要
矿井深部巷道开挖后处于裂隙、塑性、弹性围岩包围范围内。通过计算对包围巷道围岩的3种圈层范围的力学性能进行分析,进而阐述了巷道的变形机制,得出了塑性圈层围岩内的应力应变表述式。对于选择巷道的支护机制,经济有效的控制裂隙化圈层范围的扩大,改善其应力状态,提高其自身的残余强度和承载能力,对深井巷道锚杆综合支护体系的选择,提供了一定的理论支持。
After mine roadway in deep ground are excavated, they are encircled in scope of surrounding rock, which possesses three properties of cracking, plasticity and elasticity. The mechanical analysis of mechanical properties of the scope of these three kinds of circle level is made, through calculating the surrounding rock in mine roadway; and then the distortion mechanism is expounded. The stress-strain expression within the rock plastic circle is derived, so as to provide a theoretical support to choose the roadway support mechanisms, to control the expansion of the fracture scope economically and effectively, to improve their stress states, to improve their own residual strength and the carrying capacity, and to choose the system of protecting synthetically in deep mines.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2009年第1期109-112,共4页
Rock and Soil Mechanics
关键词
矿井深部
巷道围岩
力学分析
控制方法
deep ground of mine
surrounding rock of roadway
mechanical analysis
control method
