青东煤业1034工作面开采安全性评价

Assessment of Mining Safety in Qingdong Coal Industry No. 1034 Working Face

为了防止和减少水害事故,安全开采1034工作面,采用井下钻探的方法,设计施工了防治水工程。通过分析、总结防治水工程,查明了工作面区域"四含"不发育,富水性弱,浅部缺失,对工作面回采无影响;10煤层顶板砂岩裂隙含水层的富水性弱,在构造和裂隙区域砂岩水较为富水,对生产影响不大,但需注意工作面周期来压期间,动态顶板裂隙水的影响;10煤下-太原组第一层石灰岩间隔水层较为稳定;太原组石灰岩岩溶裂隙含水层富水性中等,需合理疏放;BF43断层不含水、不导水,对工作面回采无影响。综合分析认为,1034工作面可以安全开采。

To prevent and mitigate water disaster accidents for safety mining in the working face No. 1034,using underground drilling designed and constructed water control engineering. Through analysis and summarized water control engineering,have found that the weak water yield property aquifer No. 4 is not well developed in the working face area and even missing in shallow part,thus has no impact on working face winning. Water yield property of coal No. 10 roof sandstone fissure aquifer is weak,sandstone in the structural fissure developed area relatively water rich,but little impact on production. However should pay attention to impact from dynamic roof fissure water,during periodic pressurized. Aquifuge interval between coal No. 10 L and Taiyuan Formation limestone No. 1 is rather steady; water yield property of the limestone karstic fissure aquifer in the formation is medium,need to be reasonably drained. The fault BF43 is not water-bearing,not permeable,thus no impact on working face winning. The integrated analysis has considered that the working face No. 1034 can be safely extracted.