大倾角厚煤层综放支架侧护板载荷监测研究
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摘要
为评价东峡煤矿大倾角厚煤层37220-2综放工作面支架侧护板的适应性,通过对侧护板载荷进行现场监测,得到侧护板载荷特征。监测结果显示,大倾角厚煤层综放开采时,支架侧护板载荷通常在200 k N以下,工作面来压期间侧护板载荷高达1 000 k N。监测分析结果表明:大倾角煤层液压支架侧护板不仅起到密闭防止架间漏矸的作用,而能起到调架和防止支架下滑和倾倒的作用;37220-2工作面综放支架侧护板采用100 mm大缸径侧护千斤顶基本能有效地发挥调护作用。
In order to evaluate the suitability of the side guard plate in the hydraulic powered support of No. 37220-2 fully-mechanized top coal caving mining face in a high inclined thick seam of Dongxia Mine,with the site monitoring and measuring on the loading of the side guard plate,the loading features of the side guard plate were obtained. The monitoring and measuring results showed that during the fully mechanized top coal caving mining in the high inclined thick seam,the loading of the side guard plate in the powered support generally would be below 200 k N and the loading of the side guard plate would be 1 000 k N during the mine strata weighting period of the coal mining face. The monitoring and measuring analysis results showed that the side guard plate of the powered support in the high inclined seam would not only have a sealing function to prevent the rock waste leakage and but more important to have a function to adjust the powered support and to prevent the sliding and toppling of the powered support. A 100 mm large diameter side guard ram of the powered support in No. 37220-2 coal mining face could basically and effectively play the adjustment and guard function.
In order to evaluate the suitability of the side guard plate in the hydraulic powered support of No. 37220-2 fully-mechanized top coal caving mining face in a high inclined thick seam of Dongxia Mine,with the site monitoring and measuring on the loading of the side guard plate,the loading features of the side guard plate were obtained. The monitoring and measuring results showed that during the fully mechanized top coal caving mining in the high inclined thick seam,the loading of the side guard plate in the powered support generally would be below 200 k N and the loading of the side guard plate would be 1 000 k N during the mine strata weighting period of the coal mining face. The monitoring and measuring analysis results showed that the side guard plate of the powered support in the high inclined seam would not only have a sealing function to prevent the rock waste leakage and but more important to have a function to adjust the powered support and to prevent the sliding and toppling of the powered support. A 100 mm large diameter side guard ram of the powered support in No. 37220-2 coal mining face could basically and effectively play the adjustment and guard function.
引文
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[18]林忠明,陈忠辉,谢俊文,等.大倾角综放开采液压支架稳定性分析与控制措施[J].煤炭学报,2004,29(3):264-268.Lin Zhongming,Chen Zhonghu,Xie Junwen,et al.Stability analysis and control measures of powered supportsin greater inclined full-mechanized coal seam[J].Journal of China Coal Society,2004,29(3):264-268.
[19]谢俊文,高小明,上官科峰.急倾斜厚煤层走向长壁综放开采技术[J].煤炭学报,2005,30(5):545-549.Xie Junwen,Gao Xiaoming,Shangguan Kefeng.Longwall mechanized top-caving techniques along strike in steep inclined thick coal seam[J].Journal of China Coal Society,2005,30(5):545-549.
[20]程文东,王军,贠东风,等.大倾角特厚煤层综采放顶煤技术研究[R].兰州:靖远煤业集团公司王家山煤矿,2003.
[2]伍永平,刘孔智,贠东风,等.大倾角煤层安全高效开采技术研究进展[J].煤炭学报,2014,39(8):1611-1618.Wu Yongping,Liu Kongzhi,Yun Dongfeng,et al.Research progress on the safe and efficient mining technology of steeply dipping seam[J].Journal of China Coal Society,2014,39(8):1611-1618.
[3]贠东风,刘柱,程文东,等.大倾角特厚易燃煤层倾斜分层走向长壁综采技术[J].煤炭科学技术,2015,43(10):7-11.Yun Dongfeng,Liu Zhu,Cheng Wendong,et al.Longwall fully mechanized mining technology on the strike of inclined slicing in high inclined and ultra thick spontaneous combustion tendency coal seam[J].Coal Science and Technology,2015,43(10):7-11.
[4]吴绍倩,石平五.急倾斜煤层矿压显现规律的研究[J].西安矿业学院学报,1990,10(2):4-8.Wu Shaoqian,Shi Pingwu.Research of strata behavior in pitch coal seam[J].Journal of Xi’an Mining Institute,1990,10(2):4-8.
[5]Wang Jinhua.Development and prospect on fully mechanized mining in Chinese coal mines[J].International Journal of Coal Science and Technology,2014,1(3):253-260.
[6]Luo Yi.An improved influence function method for predicting subsidence caused by longwall mining operations in inclined coal seams[J].International Journal of Coal Science and Technology,2015,2(3):163-169.
[7]贠东风,刘志远,伍永平,等.三软煤层大倾角综放面倒架原因分析及扶架技术研究[J].煤炭技术,2014,33(5):31-33.Yun Dongfeng,Liu Zhiyuan,Wu Yongping,et al.Research on cause analysis of hydraulic powered support toppled down and rehabilitation technology in large inclination full mechanized coal caving face in three soft seam[J].Coal Technology,2014,33(5):31-33.
[8]刘志远.大倾角煤层综放面倒架机理与再稳定技术研究[D].西安:西安科技大学,2014.
[9]薛仁龙,魏栋梁,张少秋,等.液压支架侧护板新型锁紧装置设计[J].煤炭科学技术,2010,38(10):69-71.Xue Renlong,Wei Dongliang,Zhang Shaoqiu,et al.Design on new locking device of side protective plate for hydraulic powered support[J].Coal Science and Technology,2010,38(10):69-71.
[10]冀贵升,赵红梅.液压支架侧护板产生蹩卡的原因[J].煤矿开采,2008,13(1):78-81.Ji Guisheng,Zhao Hongmei.Jamming analysis of side guard plate of hydraulic support[J].Coal Mining Technology,2008,13(1):78-81.
[11]薛仁龙,李景辉,王悦勇,等.液压支架侧护板结构特点与改进[J].煤矿机电,2014(3):96-97.Xue Renlong,Li Jinghui,Wang Yueyong,et al.Structural features and application improvement of the face guard of hydraulic support[J].Coal Mechanical and Electrical Technology,2014(3):96-97.
[12]柳佳岐,王旭,魏栋梁,等.液压支架侧护板的力学分析与计算[J].煤矿机械,2010,31(10):15-16.Liu Jiaqi,Wang Xu,Wei Dongliang,et al.Force analysis and computer of hydraulic support face guard[J].Coal Mine Machinery,2010,31(10):15-16.
[13]王国法.液压支架技术[M].北京:煤炭工业出版社,1999.
[14]于飞,李炳文,李振龙.急倾斜综放工作面液压支架双向活动侧护板设计关键技术[J].煤矿机械,2012,33(12):5-6.Yu Fei,Li Bingwen,Li Zhenlong.Design of hydraulic support bidirectional side protective plate[J].Coal Mine Machinery,2012,33(12):5-6.
[15]郑远桂.两柱式支架在大倾角煤层的适用性研究[J].中州煤炭,2014(6):17-19.Zheng Yuangui.Study on applicability of two leg hydraulic powered supports in large inclined angle coal seam[J].Zhongzhou Coal,2014(6):17-19.
[16]赵国良,路鑫.综放工作面矿压显现规律及支架适应性研究[J].中州煤炭,2015(10):33-37.Zhao Guoliang,Lu Xin.Study on mine strata pressure behavior of fully-mechanized caving face and suitability of hydraulic powered support[J].Zhongzhou Coal,2015(10):33-37.
[17]贠东风,伍永平.大倾角煤层综采工作面调伪仰斜的原理与方法[J].辽宁工程技术大学学报:自然科学版,2001,20(2):152-156.Yun Dongfeng,Wu Yongping.Research into principle and method on readjusting high angle full-mechanized coalface to false forward slant[J].Journal of Liaoning Technical University:Natural Science,2001,20(2):152-155.
[18]林忠明,陈忠辉,谢俊文,等.大倾角综放开采液压支架稳定性分析与控制措施[J].煤炭学报,2004,29(3):264-268.Lin Zhongming,Chen Zhonghu,Xie Junwen,et al.Stability analysis and control measures of powered supportsin greater inclined full-mechanized coal seam[J].Journal of China Coal Society,2004,29(3):264-268.
[19]谢俊文,高小明,上官科峰.急倾斜厚煤层走向长壁综放开采技术[J].煤炭学报,2005,30(5):545-549.Xie Junwen,Gao Xiaoming,Shangguan Kefeng.Longwall mechanized top-caving techniques along strike in steep inclined thick coal seam[J].Journal of China Coal Society,2005,30(5):545-549.
[20]程文东,王军,贠东风,等.大倾角特厚煤层综采放顶煤技术研究[R].兰州:靖远煤业集团公司王家山煤矿,2003.