采矿与安全工程学报Issue(1)：49-55,7.DOI:10.13545/j.cnki.jmse.2016.01.008
极近距离煤层下位巷道变形机理及控制
Deformation mechanism and control of lower seam roadway of contiguous seams
摘要
Abstract
In order to solve the support problem of roadway locating in the lower seam of contiguous coal seams, this paper, taking Beiyu coalmine in Pu County, Shanxi Province as a case, has studied the stress field in the floor of gob belonging to upper seam and characteristics of deformation and instability for roadway locating in lower seam by means of numerical simulation. Principles of ground control for roadway roof in lower seam have been determined and different roof control methods have been tested in field. According to this research, three-dimensional combined roof control techniques based on hy-draulic expansion bolt and advancing insertion of tube on roof have been put forward with corres-ponding key parameters being determined through theoretical analysis and field test. Field test has sug-gested that control techniques raised in this paper are effective for the ground control of roadway in lower seam of contiguous coal seams and the general condition of roadway is good, which has provided great reference value for ground control of roadway in similar conditions.关键词
极近距离煤层/下位巷道/水力膨胀锚杆/三维联合控顶/变形控制Key words
contiguous seams/roadway in lower seam/hydraulic expansion bolt/three-dimensional combined control of roof/deformation control分类
矿业与冶金引用本文复制引用
于洋,神文龙,高杰..极近距离煤层下位巷道变形机理及控制[J].采矿与安全工程学报,2016,(1):49-55,7.基金项目
国家自然科学基金项目(51204166)；江苏高校优势学科建设工程项目；中央高校基本科研业务费专项资金项目(2011QNB01) （51204166）
