唐山矿大倾角厚煤层错层位综放工作面矿压显现规律
|
摘要
与传统综放开采相比,唐山矿Y294工作面采用大倾角厚煤层错层位综放开采技术,该技术改变了传统巷道布置方式,即将工作面进、回风巷分别沿顶、底板布置,其矿压显现规律亦有所差异,通过采用FLAC3D数值模拟和现场观测相结合的方法,对工作面矿压显现规律进行了研究分析,得出了唐山矿Y294大倾角厚煤层错层位综放工作面上、中、下部围岩的受力和运移特点、支架的受力情况以及工作面顶板来压规律。
Comparing with the traditional full-mechanized mining, the Y294 working face of steep thick coal seam of Tangshan Mine adopting the stagger roadway layout mining method which had changed the way of traditional roadway layout, the inturn and return air roadways should be arranged along the top and bottom plate respectively, so the behavior laws of mine pressure of the new mining method should be different from the traditional mining method. The behavior laws of mine pressure of steep thick coal seam with the stagger roadway layout were analyzed in the paper by using the method of FLAC3 Dnumerical simulation and the field observation, the stress and movement characteristics of the surrounding rock in the upper, middle and lower part of fully mechanized caving face of Y294 large dip thick coal seam in Tangshan Mine, the stress situation of the supports and the laws of roof pressure on the working face are obtained.
Comparing with the traditional full-mechanized mining, the Y294 working face of steep thick coal seam of Tangshan Mine adopting the stagger roadway layout mining method which had changed the way of traditional roadway layout, the inturn and return air roadways should be arranged along the top and bottom plate respectively, so the behavior laws of mine pressure of the new mining method should be different from the traditional mining method. The behavior laws of mine pressure of steep thick coal seam with the stagger roadway layout were analyzed in the paper by using the method of FLAC3 Dnumerical simulation and the field observation, the stress and movement characteristics of the surrounding rock in the upper, middle and lower part of fully mechanized caving face of Y294 large dip thick coal seam in Tangshan Mine, the stress situation of the supports and the laws of roof pressure on the working face are obtained.
引文
[1]赵景礼.错层位立体化巷道布置技术发展与展望[J].煤炭工程,2014,46(1):1-3.
[2]范新民,赵景礼,王玉宝,等.错层位巷道布置采全厚采煤法在西山矿区的应用研究[M].北京:煤炭工业出版社,2013.
[3]任世广,解盘石,伍永平,等.大倾角煤层综放工作面“降坡段”布置方式[J].煤炭工程,2010(12):4-5.
[4]温明明.大倾角煤层综采面围岩活动规律与支架适应性研究[D].北京:中国矿业大学(北京),2013.
[5]张东升,吴鑫,张炜,等.大倾角工作面特殊开采时期支架稳定性分析[J].采矿与安全工程学报,2013(3):331-336.
[6]伍永平,解盘石,任世广.大倾角煤层开采围岩空间非对称结构特征分析[J].煤炭学报,2010(2):182-184.
[7]解盘石,伍永平,王红伟,等.大倾角煤层长壁采场倾斜砌体结构与支架稳定性分析[J].煤炭学报,2012(8):1275-1280.
[8]赵洪亮,袁永,张琳,等.大倾角松软煤层综放面矿压规律及控制[J].采矿与安全工程学报,2007(3):345.
[9]武景云,黄万朋,马鹏鹏,等.大倾角煤层采场顶板运动与矿压显现规律研究[J].煤矿安全,2010,41(1):75-76.
[2]范新民,赵景礼,王玉宝,等.错层位巷道布置采全厚采煤法在西山矿区的应用研究[M].北京:煤炭工业出版社,2013.
[3]任世广,解盘石,伍永平,等.大倾角煤层综放工作面“降坡段”布置方式[J].煤炭工程,2010(12):4-5.
[4]温明明.大倾角煤层综采面围岩活动规律与支架适应性研究[D].北京:中国矿业大学(北京),2013.
[5]张东升,吴鑫,张炜,等.大倾角工作面特殊开采时期支架稳定性分析[J].采矿与安全工程学报,2013(3):331-336.
[6]伍永平,解盘石,任世广.大倾角煤层开采围岩空间非对称结构特征分析[J].煤炭学报,2010(2):182-184.
[7]解盘石,伍永平,王红伟,等.大倾角煤层长壁采场倾斜砌体结构与支架稳定性分析[J].煤炭学报,2012(8):1275-1280.
[8]赵洪亮,袁永,张琳,等.大倾角松软煤层综放面矿压规律及控制[J].采矿与安全工程学报,2007(3):345.
[9]武景云,黄万朋,马鹏鹏,等.大倾角煤层采场顶板运动与矿压显现规律研究[J].煤矿安全,2010,41(1):75-76.