支护阻力对不同岩性围岩变形的控制作用  

Controlling Effects of Support Resistance on Roadway Deformation Under Different Rock Conditions

作　　者：杨超 陆士良[1] 姜耀东[1] 

机构地区：[1]中国矿业大学采矿工程系,江苏徐州221008

出　　处：《中国矿业大学学报》2000年第2期170-173,共4页Journal of China University of Mining & Technology

基　　金：高等学校博士学科点专项基金!97029006

摘　　要：在理论分析和数值计算的基础上，研究了不同岩性条件下支护阻力对围岩变形的作用和机理．阐述了硬岩巷道中支护阻力主要是控制塑性区的范围，软岩巷道中支护阻力提供围压，影响周边岩体的软化性，遏制围岩破碎区的发展，从而控制围岩的变形．结果表明，岩性质越差，支护阻力控制围岩变形的作用越大，巷道位移量与支护阻力呈负指数函数关系．Based on theoretical analysis and numerical calculation, the role of support resistance in roadway de formation controlling was discussed. The support resistance controls roadway displacement by controlling the plastic scope in hard rock, while in soft rock by providing confined pressure, which affects the softening regularity of mechanical property of surrounding rock, to limit the fracture scope in soft rock. The poorer the mechanical property of rocks around roadway, the more obvious the controlling effect of support resistance on the deformation of surrounding rock. There is negative exponent relationship between roadway displacement and support resistance.

关 键 词：岩性 支护阻力 作用机理 围岩变形 控制作用 

分 类 号：TD325.4[矿业工程—矿井建设] TD353