综放工作面转采技术参数设计研究  

Technique parameters of revolving mining in top-coal caving working face

作　　者：王浩 温明阳 刘张昊 李红斌[1] 李进超 WANG Hao;WEN Mingyang;LIU Zhanghao;LI Hongbin;LI Jinchao(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China;Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Jiaozuo 454003,China;Tangshan Mine of Kailuan Group,Tangshan 063009,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454003 [2]煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作454003 [3]开滦唐山矿业分公司,河北唐山063009

出　　处：《煤炭工程》2023年第8期1-5,共5页Coal Engineering

基　　金：国家自然科学青年基金项目(51904091);河南理工大学博士基金项目(672706);河南省科技攻关计划项目(222102320096)。

摘　　要：为实现唐山矿Y394综采放顶煤工作面转采过程中安全高效生产,基于工作面实际地质条件,将转采过程划分为“缩面+转面”两个阶段,有效消除了工作面撤支架工序与工作面旋转工序的交叉影响。缩面阶段工作面长度由132 m缩短至125 m,支架不旋转方向,数量由93架降低至86架。转面阶段工作面长度先由125 m缩短为120 m,之后伸长至122 m,支架数保持86架,工作面旋转角度23°,转面循环角度2°,共12次转面循环。工作面进入缩面区后,运输巷侧应力上升幅度高于回风巷。工作面进入转面区后,运输巷侧应力整体大于14.5 MPa,回风巷侧整体应力大于13.4 MPa,回风巷侧单体柱与工作面距离不变时应力仍呈上升趋势。采用设计的转采工艺后,Y394综放工作面实现了安全高效生产。In order to ensure the safety and high efficiency of top-coal mining in Y394 working face in Tangshan Coal Mine,the revolving mining technique was adopted.Based on the production geological conditions,the revolving mining period was divided into two stages:working face shorting and working face revolving,which reasonably solved the time-overlap of transporting supports and working face revolving.In terms of the working face shorting stage,the length of Y394 working face decreased from 132 m to 125 m,the moving direction of supports remain consistently,but the number of supports dropped from 93 to 86.The angle of the revolving working face was 23°,which divided in to 12 revolving mining cycle,the working face revolved 2°for each cycle.As the Y394 working face advanced into the working face shorting stage,the magnitude of stress increase in transport roadway was higher than that in air-return roadway.As the Y394 working face advanced into the working face revolving stage,the stress in transport roadway(14.5 MPa)was higher than that in the air-return roadway(13.4 MPa).Moreover,the stress in the air-return roadway increased consistently as the location of Y394 remain.The technique was applied well in Y394 working face,and its safety and efficiency was demonstrated.

关 键 词：综放工作面 支承压力 回采参数 转采 矿压显现 

分 类 号：TD325[矿业工程—矿井建设]