越界采空水的特点及综合防治措施
2021-09-26史永良苏盟
史永良 苏盟


摘 要:为有效防治越界采空区积水对煤矿安全生产的威胁,本文通对后安煤矿越界采空水的探放水效果分析,就越界采空水的特点及防治措施提出两顺槽多级循环探放、切眼集中疏放等新方法、新思路,为越界老空区水害防治工作提供了实践依据。
关键词:越界采空水;两顺槽多级循环探放;切眼集中疏放;综合防治措施
中图分类号:TD822;TD745 文献标识码:A 文章编号:1003-5168(2021)24-0056-03
The Characteristics of Transboundary Water Mined and Comprehensive Prevention Measures
SHI Yongliang1 SU Meng2
(1.Zhong'tian'he'chuang Coal Branch , Shuozhou Shanxi 036800;
2. Shanxi Shuozhou Pinglu Houan Coal mine,Shuozhou Shanxi 036800)
Abstract: In order to effectively prevent and control the threat of water accumulation in the cross-border goaf to the safety of coal mine production, in this paper, it through the analysis of the exploration and drainage effect of the cross-border goaf water in Houan coal mine, and puts forward new methods and ideas based on the characteristics and prevention measures of the cross-border goaf water, such as multi-level circulation exploration and drainage in two grooves, centralized drainage in the cutting holes, etc., which provides a practical basis for the prevention and control of water disasters in the cross-border old goaf.
Keywords:cross boundary goaf water; exploration and release of two parallel grooves and multi-stage circulation; focus and release of incision;comprehensive control measures
山西省作为煤炭大省,经过多年的煤炭资源整合,很多中小型煤矿逐步被大矿所取代,这有利于集约生产、提高开采效率,降低死亡率,并对资源的可持续发展,节能、环保等有巨大意義[1-3]。但由于监管不到位等因素[4-7],资源整合前煤炭市场混乱,许多小型煤矿存在超层越界开采行为,越界后的采空区积水成为诱发煤矿水害事故的又一重要因素,因此越界采空水的防治工作尤为重要[8-11]。
1 越界采空水的特点
老空水是指采空区、老窑或者已经废弃井巷内的积水,其中老窑水主要是指由于过去的一些煤矿开采后遗留下一部分采空区,这部分采空区被后期的地下水或者地表水失去原有平衡状态而涌入形成。其具有4个特点:①存在较大的水压,采空区破坏后瞬时水量大,破坏性很强;②存积时间较长,具有较强的酸性和腐蚀性;③积水空间密闭,聚集大量的甲烷、硫化氢等有毒有害气体;④老窑地质及水文地质资料收集困难,造成老窑采空积水区空间分布具有隐蔽性、随机性的特点。……
