摘要
以峰峰矿区为背景,针对深部煤层开采亟待解决的奥灰水威胁问题,提出了针对深部煤层开采高承压奥灰水害防治的关键技术。利用定向水平井群技术对煤层底板隔水层的薄弱地带及水文异常区等进行注浆加固,封堵潜在的导水通道,增强底板完整性;同时将奥灰顶部一定范围的岩层改造为相对隔水层,将奥灰含水层的作用点向下移,增加了有效隔水层的厚度,可以解放大量原始状态下不可采的煤炭资源。该技术在峰峰矿区大采深矿井推广应用后,防止了奥灰水害事故的发生,保证了矿井安全生产。
The control techniques for Ordovician limestone karst water disaster with high-pressure in deep mining is proposed in this paper to solve the problem of Ordovician limestone karst water disaster in Fengfeng Mining District. By using directional horizontal well group technology, grouting reinforcement is carried out for the weak zone and hydrological anomaly area of coal seam floor to block the potential channel and enhance the integrity of the floor. At the same time, a certain range of rock strata in the top part of the Ordovician limestone has been converted to a relative aquifer, and the application point of the aquifer is moved down, which increases the thickness of the effective waterproof layer and can liberate a large number of raw coal resources. The application in large mining deep well of Fengfeng Coal Mine shows that this technique prevents the ash water disaster accidents and ensures the mine safety production.
出处
《煤矿安全》
CAS
北大核心
2018年第2期71-72,76,共3页
Safety in Coal Mines
关键词
深部开采
高承压水
威胁
区域治理技术
有效隔水层
水害防治
deep mining
high-pressure confined water
threaten
regional governance technology
effective aquiclude
prevention and control of water disasters
