采矿与安全工程学报Issue(1)：116-121,6.DOI:10.13545/j.cnki.jmse.2016.01.018
极近距煤层矿压显现强度的间距影响规律研究
The impact study on strata behavior laws of different coal seam spacing in ultra closed coal seams
摘要
Abstract
In order to analyze the mining pressure behavior mechanism of lower coal seam working faces in shallow and closed coal seams while mining through upper coal seam goaf and left coal pillars, and determine the support resistance reasonably, the mine pressure change law and the support resistance of the lower coal seam in shallow and closed coal seams have been discussed. Results show that with the increase of coal seam spacing support resistance decreases. The mining pressure behavior will be influenced greatly by coal seam spacing when the coal seam spacing is less than 15 m while the influence will be very limited when the coal seam spacing is more than 15 m. The mining pressure behavior are different under the goaf, the left coal pillars and the coal seam:under the goaf the roof breakage pace is 9.8 m, the maximum operation resistance is 10 920 kN and the dynamic factor is 1.3;under the left coal pillars the roof breakage pace is 10.8 m, the maximum operation resistance is 11 065 kN and the dynamic factor is 1.35;under the coal seam the roof breakage pace is 12.2 m, the maximum operation resistance is 10 742 kN and the dynamic factor is 1.39.关键词
极近距煤层/矿压规律/数值模拟Key words
ultra closed coal seams/mine pressure law/numerical simulation分类
矿业与冶金引用本文复制引用
王孝义,宋选民,陈春慧..极近距煤层矿压显现强度的间距影响规律研究[J].采矿与安全工程学报,2016,(1):116-121,6.基金项目
山西省科技攻关项目(200631118-02) （200631118-02）
