基于支承压力分布的大断面煤巷损伤模型分析  

Analysis of Large Section Roadway Damage Model Based on Distribution of Abutment Pressure

作　　者：吴学明 王苏健 乔懿麟 黄克军 张天军[3] 

机构地区：[1]陕西煤业化工技术研究院有限责任公司,西安710065 [2]煤炭绿色安全高效开采国家地方联合工程研究中心,西安710065 [3]西安科技大学能源学院,西安710054

出　　处：《煤炭技术》2015年第1期42-44,共3页Coal Technology

基　　金：陕西省自然科学研究计划重点资助项目(2011JZ010)

摘　　要：根据大断面巷道侧向支承压力分布的一般规律,从帮煤体内部损伤缺陷的随机性分布特征出发,基于反映帮煤体内部缺陷的微元强度服从威布尔分布的概念,建立了侧向支承压力作用下帮煤体损伤统计力学模型,并分析了巷高与巷帮煤壁片帮程度、煤层内聚力等力学关系,为帮锚杆支护提供科学依据。According to the general rules of coal roadway with large section lateral abutment pressure distribution,starting from the characteristics of random distribution of internal defects for coal,reflecting the internal defects of micro-unit strength for coal obeys Weibull distribution based on the concept,built statistical damage mechanics model under the action of lateral abutment pressure,the supporting strength of the minimum support of large section roadway roadside coal in the presence of the plastic yield zone,and analyzes the lane high stability and coal wall spalling degree and laneway,seam cohesion,the mechanical relationship,to help anchor to provide theoretical basis for roadway support parameters.

关 键 词：巷帮煤体 支承压力 损伤力学模型 煤帮稳定性 

分 类 号：TD322[矿业工程—矿井建设]