陕西煤炭2026，Vol.45Issue(8)：31-35,5.DOI:10.20120/j.cnki.issn.1671-749x.2026.0806
浅埋近距离煤层重复采动下覆岩隔水层破坏特征分析
Failure characteristics of overlying rock aquiclude under repeated mining of shallow close-distance coal seams
苏海涛 1曹健2
作者信息
- 1. 国能神东煤炭补连塔煤矿,内蒙古 鄂尔多斯 017000||内蒙古科技大学 矿业与煤炭学院,内蒙古 包头 014010||内蒙古自治区矿业工程重点实验室,内蒙古 包头 014010
- 2. 内蒙古科技大学 矿业与煤炭学院,内蒙古 包头 014010||内蒙古自治区矿业工程重点实验室,内蒙古 包头 014010
- 折叠
摘要
Abstract
The Jurassic coalfield in northern Shaanxi is mainly composed of shallow buried close-distance coal seams.Affected by the activation and development of overlying rock fractures caused by repeated mining,it is easy to penetrate the aquiclude and lead to its instability,resulting in the loss of groundwater resources.The stability of aquiclude is an important prerequisite for realizing water-preserved mining.Upward fracture development height and downward fracture development depth are the important means to judge the stability of the aquiclude.Based on the working conditions of 4-2 and 5-2 coal seams in Hongliulin Coal Mine,the research was carried out in combination with numerical simulation experiments.The aquiclude failure characteristics of fracture development law under single coal seam mining and repeated mining are studied.The results show that the upper and lower fractures are not connected during the mining of single coal seam in 4-2 coal seam,and the aquiclude can maintain stability;during the repeated mining of 5-2 coal seam,the upper and lower fractures are penetrated and the aquiclude is unstable.Therefore,measures such as high-limiting mining and stratified mining should be taken in order to realize the water-retaining mining in this area.关键词
重复采动/隔水层/裂隙发育/保水开采Key words
repeated mining/aquiclude/fracture development/water-retaining mining分类
矿业与冶金引用本文复制引用
苏海涛,曹健..浅埋近距离煤层重复采动下覆岩隔水层破坏特征分析[J].陕西煤炭,2026,45(8):31-35,5.
