煤矿底板水害综合治理

Comprehensive Control of Floor Water Damage

煤矿底板水害一直是制约矿井安全开采的重大问题,对永华二矿地质构造与水文地质特征进行分析研究,并对马家沟组石灰岩含水层与太原组灰岩含水层进行突水系数分析。分析结果表明,11021工作面附近区域太原组灰岩含水层存在水压高、突水系数超标的问题。针对受底板水害威胁的11021工作面,根据其地质构造与水文地质特征,对隔水层薄弱地段进行底板注浆加固,并利用探放水技术将探到的有水害威胁区域的水排出,做到防患于未然,达到治理水害的目的。

Coal mine floor water damage has been a major problem restricting the exploitation of mine safety. Geological structure and hydrogeological characteristics of Yonghua No. 2 Mine were analyzed,water burst coefficient was also analysed on Majiagou Formation limestone aquifer and Taiyuan Formation limestone aquifer. Results show that,there are some problems exist in the regions near 11021 working face in Taiyuan Formation limestone aquifer,the water pressure is high, and water burst coefficient is over the limit. For 11021 working face threatened by floor water damage, according to its geological structure and hydrogeological characteristics, floor grouting methods were used in the regions where the aquiclude is weak, surveying and releasing water technologies were used to drain water in areas with water hazard threat. The application of these methods can prevent potential dangers, and can reach the purpose of water hazard control.