新峰一矿构造控水作用与治理措施探讨

新峰一矿突水频繁,矿井安全受水害威胁严重,防治工程量大、难度高。通过对矿井构造应力展布规律、矿井边界及矿井内断层导水性等水文地质因素的分析,确定了该矿井突水类型。指出石炭系灰岩裂隙水和寒武系灰岩裂隙水是矿井的主要充水含水层,断裂构造是主要导水通道。地质构造对突水的控制在该矿主要体现在对突水点分布、富水带的划分以及隔水层阻水能力等方面。在对影响该区地质构造机理进行综合分析的基础上,根据矿区构造控水的特点,提出了采取物探和钻探相结合、进行放水试验、帷幕注浆和排供结合的治理措施。

Probe into Water Bursting Geological Causation and Governing Measures in Xinfeng No.1 Coalmine

The Xinfeng No.1 coalmine suffers from frequent water bursting, seriously threatening mining safety, thus needs large amount of water control engineering with high challenge. Through hydrogeological factor analysis of mine tectonic stress spread pattern, mine boundary and fault transmissibility, have determined water bursting type of the mine, pointed out the Carboniferous and Cambrian limestone fissure waters are main mine water filling aquifers, while the faulted structure is main water conducting channel. Geological structural control over water bursting is mainly embodied in aspects of bursting point distribution, water rich zone dividing and confining bed water-resisting ability. Based on the analysis of mechanisms impacting the area＇s geological structure, according to structural water control features in mine area, put forward governing measures of integrated geophysical prospecting and drilling, outflow test, concrete curtain grouting and combined drainage and supply.