近距离煤层孤岛区域上行开采技术研究与应用

由于地质条件的复杂性和不可预知性造成采空区上方遗弃了有可采价值的煤炭储量。通过理论分析与矿压观测等相结合的方法,研究上行开采的机理,掌握了采动压力的变化规律,确定了上下煤层采动影响的时空关系,及时采取相应措施,预计上行开采在安全控制方面的效果,为今后类似条件下进行上行开采提供宝贵资料。

Research and Application of the Technique of Upward Mining in and its applicoa Lonely Island Zone for Closed Coal Seams

Coal storages with a high value of exploitation above gob are deserted because of complexity and unpredictability of geological conditions.With the method of theory analysis and strata control observation,the mechanics of upward mining is studied.The changing regularity of excavating activity tension is mastered and time-space relationship of up-down coal seam mining effect is grasped.Then we can take corresponding measurements timely and predict the effectiveness of upward mining on security control.It provides precious data for proceeding upward mining with the analogous conditions in the future.