孤岛煤柱应力降低区内布置水采回采巷道的探索

A Study of the Arrangement of Extraction Headingsin Zones With Reduced Stress in Working the GudaoPillar With Hydromining System

在矿压较大的孤岛煤柱中，根据水采矿压显现的实际规律，在应力降低区内布置回采巷道。由于巷道布置的改革，从而避开了矿压峰值的破坏作用，减少了巷道开掘和维护难度，顺利采出了原煤。由此实践经验总结出类似条件下水采回采巷道的布置方法。

Based on the actual pattern of rock pressuremanifestation in hydromines, the extraction headingsare arranged in zones presenting reduced stress inworking the Gudao pillar under great rock pressure,for avoiding the destructive effect if peak rock pressure and facilitating the drivage and maintenance ofheadings. On the basis of the successful mining operation in this mine,a general method for arranging theheadings under similar conditions has been proposed.