砂岩破断面力学参数及摩擦特性研究  

Study on the Mechanics Parameters and Friction Law of Sandstone Damage Plane

作　　者：翟英达[1] 康立勋[1] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《太原理工大学学报》2003年第2期141-143,共3页Journal of Taiyuan University of Technology

基　　金：山西省留学回国人员科研基金项目 (98-4 1)

摘　　要：用粗糙度系数、壁面抗压强度和基本摩擦角作为描述破断面力学性质的参数 ,测定了细、中、粗 3种类型砂岩的相应参数值 ,从实验角度研究了砂岩张拉破断面在不同法向应力条件下具备的抗摩擦应力 ,总结出砂岩张拉破断面遵循的摩擦规律 。In this paper, the mechanics properties of rock damage plane are described by parameters such as roughness coefficient, wall compress strength and basic friction angle. These three coefficients for fine grain sandstone and medium granular sandstone and grit sandstone are test. The friction stress is researched at the condition of different normal compressive stress acting on the tension damage plane. The friction law of tension damage plane of sandstone is summed up. This law will provide scientific basis for block structure stability judging in basic roof stratum and roof pressure intensity calculating.

关 键 词：力学参数 摩擦特性 破岩破断面 粗糙度系数 壁面抗压强度 基本摩擦角 煤矿开采 

分 类 号：TD31[矿业工程—矿井建设]