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1、8m大采局综采工作面矿压显现规律研究神华神东煤炭集团有限责任公司补连塔煤矿摘要：针对大采高综采工作面回采时矿压显现剧烈，易发生煤壁片帮、冒顶压架等事故,以神东矿区首个8m大采高综采工作而为研宂对象，通过数值模拟分析得出该综采工作面支承压力峰值处于前方煤壁69m位置，巷帮压力峰值处于前方煤壁6m左右位置，以现场实际观测及支架压力数据分析对工作面回采过程中矿压显现规律进行了研究。结果表明：随着采高加大，工作面煤壁片帮现象加剧，矿压显现明显，本工作面初次来压步距4044m，来压持续5刀，周期来压步距为7.2l6.8m,平均10.77m,周期来压
2、持续28刀，平均4.8刀，大致呈现“大-小”不规律相间变化趋势，动载系数为来压强度较强，相较邻7m采高工作面矿压显现明显，来压步距减小，来压强度增大，支架阻力满足工作面支护要求，这为同盘区接续大采高工作面安全冋采提供了科学依据。关键词：大采高综采工作面;神东矿区;矿压显现;一次采全高;作者简介：张立辉（1982—），男，河北承徳人，高级工程师，注册安全工程师，现任祌华祌东煤炭集团公司补连塔煤矿总工程师。E-mail:knight9919@126.com收稿日期：2017-09-30Studyonstratabehaviorlawofful
3、ly-mechanizedminingfacewith8mlargeminingheightZHANGLihuiLINannanMine,ShenhuaShendongCoalGroupCorporationLimited;Abstract：Accordingtothefully-mechanizedminingfacewithlargeminingheightwhentheminepressureappearmoreintense,pronetocoalwall,roofpressureframeandotheraccidents,ta
4、kingShandongMiningAreafirst8metersfully-mechanizedminingfaceastheresearchobject,thenumericalsimulationanalysisshowedthatthepeakvalueofabutmentpressureinfully-mechanizedminingfacecoalwallaround6~9meters,thepeakpressureinthecoallanetohelpthewallaround6meters,basedonthefield
5、observationanddataanalysisofthesupportpressureofminingfaceofminepressurewerestudied.Theresultsshowedthatwiththeminingheightwerebrokenup,helpphenomenonaggravate,thefirstpressurestepoftheworkminingfaceawayfrom40to44meters,continuouspressurefor5knives,periodicweightingdistan
6、cewas7.516.8metersandanaverageof10.77meters,continuouspressurefor2^8knivesandanaverageof4.8knives,roughlythepresentbig-smallirregularchangetrend,dynamicloadcoefficientwas1.36~1.74,thecompressivestrengthwasstronger,comparedwith7metersminepressurebehaviorobvious,weightingwa
7、sreduced,compressivestrengthwasincreased,supportresistancemetthesupportingconditionsofsurplustoacertainextent,thiswouldprovideascientificbasisforsafetyminingofthenextlargeminingheightworkface.Keyword：largeminingheightfully-mechanizedworkingface;ShendongMiningArea;stratabe
8、havior;fullseamonepassingmining;Received：2017-09—300引言厚煤层一次采全高综采技术一直是世界煤炭生产技术主耍竞争区域，近年来神东公司一直在努力
