近距离顶板灰岩富水性探测与突水危险性研究

发布时间：2018-04-14 02:34

本文选题：顶板灰岩含水层 + 裂隙发育　；参考：《矿业安全与环保》2015年01期

【摘要】：针对某矿1102工作面近距离顶板灰岩含水层是否具有突水危险性,采用瞬变电磁探测和UDEC数值模拟的方法,就顶板灰岩富水性分区及覆岩结构稳定性、导水裂隙发育特征进行了深入研究。研究结果表明:1顶板灰岩含水层有2处含水较强区,1处含水中等区,2处含水中等偏弱区。21煤上覆岩层裂隙发育集中在采空区后方、前方煤壁处及工作面中部离层区。裂隙发育高度随采空区跨度增加而增大,两者呈非线性关系。开挖40~120 m时,裂隙发育高度突增;开挖70 m、裂隙高度为22 m时发展至灰岩含水层。315 m厚砂岩充当了隔水层,工作面突水危险性较小。4采用新型化学注浆堵水材料——改性脲醛树脂,成功进行了工作面防治水试验,效果显著。
[Abstract]:In view of the danger of water inrush in the near roof limestone aquifer of No. 1102 working face of a certain mine, using transient electromagnetic detection and UDEC numerical simulation, the water-rich partition of roof limestone and the stability of overburden structure are studied.The development characteristics of water conductivity fractures are studied.The results show that there are two water-bearing areas and one middle water-bearing area and two water-bearing medium-weak areas. The fracture of overlying strata on top of coal .21 is mainly developed behind the goaf, the front coal wall and the middle part of the coal face.The height of fracture development increases with the increase of the span of goaf, and the relationship between them is nonlinear.When 40 ~ 120 m is excavated, the height of fissures grows suddenly, and when excavation is 70 m, the height of fissures is 22 m, and the thick sandstone of limestone aquifer. 315 m is used as a waterproof layer.The risk of water inrush in working face is small. 4. A new chemical grouting water plugging material, modified UF resin, has been successfully carried out to prevent and cure the water in the working face, and the effect is remarkable.
【作者单位】：贵州大学矿业学院;贵州省非金属矿产资源综合利用重点实验室;毕节学院矿业工程学院;
【基金】：贵州省科学技术基金项目(黔科合J字[2011]2011号)
【分类号】：TD745

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