谢桥煤矿综采工作面陷落柱技术研究

Research on the Collapse Column in Mining Working Face of Xieqiao Coal Mine

岩溶陷落柱是指煤系地层底板厚层灰岩中溶洞裂隙的塌陷物以及上覆地层塌陷物形成的塌陷体,谢桥井田东翼采区发育有2个岩溶陷落柱,为保证13216综采工作面采掘安全通过1#陷落柱影响区,采取矿井瞬变电磁法和矿井高密度电法探测,掘进时利用物探和钻探相结合的综合探查技术;回采前利用运输顺槽对1#陷落柱及影响区采取先物探探查后钻探验证技术,并对其进行注浆加固,从而使工作面采掘时安全通过1#陷落柱影响区,多回收煤炭资源10.2万吨,创造了良好的经济效益。

Karstic collapse column refers to fissure cave collapse of matter in the thick layer of limestone of coal - bearing strata floor and the formation of overlying strata collapse, there are 2 karstic collapse columns in the eastern mine of Xieqiao coal mine, in order to ensure the safe passing of the No. 13216 fully -mechanized coal mine face across 1 # sink hole zone of influence, take mine transient electromagnetic method and Mine high- density electrical method to detect, combination of geophysical exploration and excavation adopt the comprehensive detection technology of the drilling exploration. Before actual mining, the use of transportation gateway on 1 # collapse column and its affected area adopt geophysical exploration after drilling technology, and the grouting reinforcement, so that the face of mining safety pass 1 # subsided column zone of influence, multiple the production of coal resources 102 thousand tons, and create good economic benefits.