采空区下近距离煤层工作面支架支护强度确定  

Determination of Supporting Strength in Mechanized Mining Face of Close Distance Coal Seam under Goaf

作　　者：孔宪法[1,2] 杨永康[1] 康天合[1] 柴肇云[1] 郭俊庆[1] 郭帅[1] 

机构地区：[1]太原理工大学采矿工艺研究所,山西太原030024 [2]中国煤炭进出口公司,北京100011

出　　处：《矿业研究与开发》2013年第6期50-53,99,共5页Mining Research and Development

基　　金：山西省科技攻关(工业)项目(2011032101504);国家自然科学基金项目(51174141;51004075);山西省高校青年学术带头人支持计划(2012)

摘　　要：针对采空区下近距离煤层综采工作面支架支护强度确定的难题,采用理论分析方法给出了近距离煤层的定义,并按照支架的力源将采空区下近距离煤层开采时的顶板分为"采空区下"、"实体煤下"和"煤柱下"三种类型。针对不同类型顶板结构,对工作面顶板进行分类,分析综采工作面支架-围岩关系,给出了确定支架工作阻力的定量计算公式,确定了支架支护强度并在现场工程实践中得到验证。研究结果可为类似条件下支护载荷的选择提供理论依据和工程参考。To solve the problem of how to determine the sup- porting strength in fully mechanized mining face of close dis- tance coal seam under goal, the definition of close distance coal seam was given based on the theoretical analysis meth- od. According to different support forces, the roofs were di- vided into three types., under goaf, under solid coal and un- der coal pillar. With regard to different types of roof strata structure, the working face roofs were classified, the rela- tionship of support and surrounding-rock in fully mechanized mining face was analyzed, the quantitative calculation formu- la for determining the working resistance of the support was developed, and the supporting strength was determined and verified through field engineering practice. The research re-sults can provide theoretical basis and engineering reference for selecting supporting load under similar conditions.

关 键 词：采空区 近距离煤层 支架支护强度 

分 类 号：TD823.81[矿业工程—煤矿开采]