摘要
矿井深部滞后突水是影响煤矿开采的主要水害类型。根据李雅庄矿近年来的突水情况,基于滞后突水理论分析,对该矿滞后突水主控因素进行了研究,结果表明：该矿3次滞后突水全是由断层原因导致的,因此,断层突水是李雅庄矿滞后突水的主要形式;历次突水点（67%）大多位于含水层富水性较大的地方,说明含水层的富水性对突水有着重要的影响;历年12次突水中有10次突水点均位于水头压力大于2.5 MPa的区域,说明在相同条件下,水头压力越大,发生突水的可能性就越大,并且水头压力越大,突水的强度也越大;突水点大多位于距2#煤层底板有效隔水层等效厚度35～45 m,隔水层的有效隔水厚度不大,是构成该矿井突水的主要因素之一。
Deep of coal mine hysteretic water bursting is the main type of water damage to affect coal mining.According to water inrush cases of Liyazhuang coal mine in recent years,based on the theory of hysteretic water busting,studies the main controlling factors of hysteretic water bursting. The results show that all of the three hysteretic water busting are caused by fault. So fault water inrush is the main form of hysteretic water bursting. The previous water busting point mostly located in the place of aquifer watery large,it indicates that watery of aquifer has a significant impact on the water inrush. Ten of the twelve water bursting points located in the area of head pressure is greater than2. 5 MPa. It indicates that under the same conditions the greater the head pressure,the greater the possibility of water inrush,and strength of the water pressure. The water busting point is mostly located away from No. 2 coal seam floor effective water resisting layer 35 ～ 45 m. The effective water resisting thickness of water resisting layer is small,it is one of the main factors of coal mine water bursting.
出处
《山西焦煤科技》
2016年第4期50-53,共4页
Shanxi Coking Coal Science & Technology
关键词
滞后突水
地质构造
富水性
水头压力
隔水性
Hysteretic water bursting
Geological structure
Watery
Head pressure
Water resisting property
