太原西峪煤矿9号煤层带压开采危安区的划分

Division of Danger Zone and Safety Zone in No.9 Coal Bed on Mining Under SafeWater Pressure of Aquifer in Xiyu Coal Mine of Taiyuan City

西峪煤矿位于太原西山岩溶水系统的晋祠岩溶水亚系统内的非主径流带上。由于本矿区9号煤层除最南端有小部分9号煤层底板高于水头外,其余全部处于水头之下,因此,奥陶系灰岩水已严重地威胁着9号煤层的安全开采,特别是在底板隔水岩柱薄弱地带或断裂陷落柱构造破碎带,已存在着岩溶水突破隔水岩柱溃入矿坑的危险性。本文着重研究并划分了矿区内9号煤层带压开采的安全区与危险区,目的是为煤矿带压开采提供宝贵的资料。

Xiyu coal mine located on the unprincipal run-off zone of Jinci Karst water subsystem of Xishan Karst water system in Taiyuan region. Because of whole No.9 coal of mining area almost is all under the water level of aquifer, so the water in limestone of Ordovician system already threaten seriously safe mining of No.9 coal bed, especially in the fragile zone of impermeable rock pillar of bottom or structural broken zone of fracture collapse column, there are danger Karst water into mining pit. The paper has mainly studied and divided danger zone and safety zone in No.9 coal bed on mining under safe water pressure of aquifer in mining area. Thus submitted precious informations of mining under safe water pressure of aquifer for coal mine.