摘要
为了保证煤矿安全生产,提高煤炭资源回采率,在分析陕西北部矿区金鸡滩煤矿大采高工作面生产技术条件的基础上,实测当前留设区段煤柱的侧向支承压力,分析其留设尺寸的合理性,采用多种理论计算出煤柱尺寸,综合取值后做现场验证。研究结果表明:受两次采动影响后,原留设煤柱呈超稳定状态,宽度偏大,按25m留设煤柱即可满足生产需要。
To ensure the safety of coal mine production and improve the recovery rate of coal resources,the lateral abutment pressure of the coal pillar in the current reserved section is measured and the rationality of the reserved size is analyzed on the basis of summarizing the production and technical conditions of high mining height working face in Jinjitan Coal Mine.After that,the size of coal pillar is calculated by various theories,and the comprehensive value is worked out for on-site verification.The results show that the previous coal pillars are in super-stable state after two mining operations,but the width is a little large.The production needs can be met by setting the width of coal pillars at 25m.
作者
张海荣
索永录
Zhang Hai-rong;Suo Yong-lu(Department of Mining Engineering,Yulin Vocational and Technical College,Shaanxi Yulin 719000;School of Energy,Xi’an University of Science and Technology,Shaanxi Xi'an 710054)
出处
《山东煤炭科技》
2019年第9期31-33,36,共4页
Shandong Coal Science and Technology
关键词
大采高
综采
区段
煤柱
large mining height
fully mechanized mining
section
coal pillar
