青岗坪煤矿42104综放面矿压显现规律实验研究  

Experimental study of strata behavior laws for 42104 fully mechanized top-coal caving face in Qinggangping Coal Mine

作　　者：邵小平[1,2] 蔡小林 李龙清[1,2] 武军涛[1] 张杰[1,2] SHAO Xiao - ping CAI Xiao - ling LI Long - qing WU Jun - tao ZHANG Jie(College of Energy Science and Engineering, Xi＇ an University of Science and Technology, Xi＇ an 710054, China Key Laboratory of Western Mine Exploration and Hazard Prevention of Ministry of Education, Xi＇an 710054, China)

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]教育部西部矿山开采及灾害治理重点实验室,陕西西安710054

出　　处：《煤炭工程》2017年第9期83-86,共4页Coal Engineering

基　　金：陕西省教育厅科研计划项目资助(13JS064);国家自然科学基金项目资助(51474173)

摘　　要：针对青岗坪煤矿42104综放面的矿压显现规律进行了模拟实验研究。研究表明:老顶初次来压步距64~66m,周期来压平均步距27m;初次来压动载系数1.27,周期来压增载系数为1.36,总体来压显现程度为中等;初次来压前煤壁前方支承压力增幅较明显的区域为煤壁前方16.75m范围内,周期来压时煤壁前方支承压力增幅剧烈的区域为煤壁前方45.01m范围内,确定工作面超前支护的距离应达到煤壁前方45m范围内。The strata behavior laws of 42104 fully mechanized top-coal caving face in Qinggangping Coal Mine was simulated,and the research showed,the first weighting interval of the basic roof was 64 - 66 m,the average periodic weighting interval was 27 m. The first weighting dynamic load coefficient was 1. 27,and the average dynamic load coefficient of periodic weighting was 1. 36, the overall strata behavior was ＂medium strong ＂. The abutment pressure increases significantly within 16. 75 m in front of the coal wall before the first weighting,and during periodic weighting,that happens within 45. 01 m in front of the coal wall,according to which,the advance support distance of fully-mechanized top-coal caving face should reach 45 m in front of the coal wall.

关 键 词：矿压显现规律 初次来压 周期来压 超前支承压力 

分 类 号：TD322[矿业工程—矿井建设]