浅埋深松软顶底板褐煤层开采方法的研究

针对河北张北褐煤化工原料基地王牛滩煤矿特殊煤层条件,从理论上分析大采高一次采全高采煤方法、厚煤层分层开采方法、综放开采方法这三种采煤方法的可行性,确定了采用综放开采方法的合理性。通过实验室相似模拟试验,分析这种煤层在综采条件下顶煤的冒放性、放出厚度、煤层顶底板的运移规律及工作面矿压显现规律,对今后类似煤层开采方法的确定有借鉴作用。

Study on the Mining Method with Lofty Roof and Floor under Shallow Overburden Condition

According to the special coal-seam conditions in Wangniutan Company in Hebei province,which is a chemical material base about lignite,this paper analyses theoretically the feasibility of mining method,including the method of one pass cutting coal mining,the method of thick seam slicing mining and the method of sub-level caving mining,and determine the rationality about using the method of sub-level caving mining.On the basis of experimental data of similarity simulation test,the paper analyses caving proper...