高低联架大采高综采工作面矿压显现规律及支架适应性研究

随着我国煤炭工业的不断发展,大采高综采技术得到越来越广泛的应用。当工作面煤层厚度变化较大(但仍在3.5～6.0m之间)时采用大采高综采技术,若采高取大值,则煤炭含矸率大,煤质难以保证;若采高取小值,则回采率降低,资源浪费多,采空区易发火。神东公司补连塔矿31401综采工作面使用高低两种液压支架联合支护的办法解决了这一矛盾。文章对该工作面矿压显现规律及支架适应性进行了初步研究。

Research about Mining Pressure Rule and Support Adaptability in the High Level of Joint Holder at Mining Height Fully Mechanized Mining Face

With the continuous development of China's coal industry,large higher fully mechanized mining technology is more and more widely used.When the face changes in seam which thickness is greater (but still between 3.5 ~ 6.0m),we use large higher fully mechanized mining technology.If the cutting height to take large value,the coal gangue rate is high and coal is difficult to guarantee;if to take a small mining height value,then the recovery rate will reduct,and resources will waste and more fire in mined-out are...