煤矿安全2017，Vol.48Issue(8)：28-31,4.DOI:10.13347/j.cnki.mkaq.2017.08.008
残煤复采综放工作面液压支架选型研究
Study on Hydraulic Support Selection for Residual Coal Repeated Mining in Fully Mechanized Caving Face
摘要
Abstract
In order to select reasonable hydraulic support for residual coal mining in fully mechanized caving face,taking 2201 coal mining face of Xianquan Coal Mine as the research background,and site geological survey,theoretical analysis,numerical simulation are used to carry out reasonable selection for hydraulic support under the geological conditions.The results show that the length of key block of basic roof formed when the working face passes through abandoned roadway is the sum of the abandoned roadway width,the ultimate width of pillar instability and the periodic weighting of basic roof,the final working resistance of the supprot is 9 532 kN,the initial support force is 7 144 kN (31.5 MPa),the center distance is 1 750 mm,the height of the support is 2.5 m to 4.2 m.Through the research results combined with the situation of the mining face,ZFY10200/25/42 twocolumn shielded caving hydraulic support is selected as the reasonable frame.关键词
残煤复采/支架选型/工作面过空巷/基本顶长关键块/数值模拟Key words
residual coal repeated mining/hydraulic support selection/workface passing through abandoned roadway/key block of basic roof/numerical simulation分类
矿业与冶金引用本文复制引用
张凯娟,杜迎慧..残煤复采综放工作面液压支架选型研究[J].煤矿安全,2017,48(8):28-31,4.基金项目
河南省科技攻关资助项目(2013032101504) （2013032101504）
