采矿与安全工程学报Issue(5)：814-820,7.DOI:10.13545/j.cnki.jmse.2015.05.018
浅埋砂质泥岩顶板煤层保水开采评价方法研究
Water-preserved mining evaluation in shallow seam with sandy mudstone roof
摘要
Abstract
Focusing on widely distributed sandy mudstones above upper No.2-2 coal seam in gao jia-liang mine, Ordos, the microscopic structure and mineral composition of sandy mudstones deposited during different periods were tested, and the fractured zones above working faces with different geolog-ical conditions were further detected. The results show that particle volume of sandy mudstone in Juras-sic Zhiluo and diazepam group is small, with the characteristics of point contact between particles, low voidage, high content of montmorillonite, swelling with water, poor cementation, easy broken, and wa-ter preventing ability after rock fractured. Evaluation model of water-preserved mining in shallow seam with the sandy mudstone roof was constructed, two basic conditions of water preserved mining were obtained, and the evaluation method was put forward. Industrial test shows that the evaluation results are concordance with that of field practice.关键词
浅埋煤层/砂质泥岩/保水开采/裂隙带/评价Key words
shallow buried coal seam/sandy mudstone/water preserved mining/fracture zone/evaluation分类
矿业与冶金引用本文复制引用
宁建国,刘学生,谭云亮,王俊,张明,张立生..浅埋砂质泥岩顶板煤层保水开采评价方法研究[J].采矿与安全工程学报,2015,(5):814-820,7.基金项目
山东省“泰山学者”建设工程专项经费项目；国家自然科学基金项目(51574154，51344009)；矿山灾害预防控制省部共建国家重点实验培育基地开放果题基金项目(MDPC2013KF12) （51574154，51344009）
