煤炭与化工2024，Vol.47Issue(3)：27-29,33,4.DOI:10.19286/j.cnki.cci.2024.03.006
羊东矿保护煤柱开采地表变形研究
Study on surface deformation of protective coal pillar mining in Yangdong Mine
张梦华1
作者信息
- 1. 中国煤炭地质总局水文物测队,河北邯郸 056000
- 折叠
摘要
Abstract
In order to solve the problem of limited actual mining reserves and liberation of stagnant coal in Yangdong Mine,on the basis of controlling surface deformation,the method of mining protective coal pillars was used to improve the recovery rate of coal and prolong the production life of the mine.In this paper,the probability integral model was used to predict and analyze the surface deformation value,and the mining damage characteristics of important structures caused by the mining of protective coal pillars in industrial square were studied.The influence degree of important structures and the deformation of wall and ground in the mining of protective coal pillars in industrial square were analyzed.On this basis,the corresponding maintenance measures were formulated.The results showed that the maximum surface subsidence value obtained by the probability integral model was 1.7 m,the maximum horizontal displacement value was 0.51 mm/m,the maximum tilt value was 16 mm/m,and the curvature was 0.68(10-3/m).It was judged that the building outside the exchange station would be damaged by grade Ⅳ.According to the results,the wall was monitored,and the repair measures were made.At the same time,the ground was monitored,and the cracks were repaired in time to reduce the damage degree of mining to the surface,so as to protect the surface buildings and realize the reasonable and effective mining of coal.关键词
地表变形/保护煤柱/概率积分/采动破坏Key words
surface deformation/protect coal pillar/probability integral/mining damage分类
矿业与冶金引用本文复制引用
张梦华..羊东矿保护煤柱开采地表变形研究[J].煤炭与化工,2024,47(3):27-29,33,4.
