大倾角特厚煤层工作面圆弧段割煤工艺仿真研究
|
摘要
为解决大倾角特厚煤层综放面支架的整体稳定性和下端头支护技术难题,近年来出现了"倾斜直线—圆弧—水平"的创新型大倾角特厚煤层综放工作面布置方式。在生产实践中发现采煤机在圆弧段割煤存在自行留顶切底现象,随着留顶切底量的积累,圆弧段上端点逐渐上移且圆弧段曲率增大,加剧支架倾倒,影响正常割煤。针对这一突出问题,采用软件集成的方法,动态仿真了圆弧段采煤机自行留顶切底割煤的复杂过程,直观显示每割一刀煤自行留顶切底的微量和多刀割煤自行留顶切底的累积量及留顶切底过程,并对仿真结果进行了综合分析。结果表明:每刀割煤严格按照仿真所得首刀割煤的留顶切底量值作为割顶留底量值,即可补偿采煤机留顶切底量以保持正常的圆弧段曲率。仿真结果为大倾角特厚煤层综放圆弧段工作面及其类似条件工作面作业规程编制和采煤机司机割煤操作培训提供了指导。
In order to achieve the overall stability of hydraulic supports and to strengthen the supports at the lower end in the fully-mechanized caving face of large dip angle and thick coal seam,in recent years,the innovative"slash-arc-horizontal"pattern large-angle and extra-thick coal seams at fully-mechanized caving face has been invented. In the production practice,it is found that the shearer tends to retain the top layer while cutting the bottom layer in the cutting of the circular section and with the accumulation of the amount,the upper end of the circular section gradually moves up and the curvature of the circular section increases,which intensifies the risk of the support's toppling and affects the normal coal cutting. To solve this serious problem,the software integration method is used to dynamically simulate the complex process of cutting the coal at the top of the circular section of the shearer by itself,which visually shows the amount left by every cut and the accumulate amount by multiple cuts,and the simulation results are comprehensively analyzed. The results show that the coal cutting per knife is strictly in accordance with the value of the top cutting bottom of the first knife cutting,which can be used as the topping amount of the cutting head to compensate the shearer's top cutting amount to maintain the normal arc segment curvature.The simulation results provide a visualized material for the preparation of the working face of the fully-mechanized caving face of the large inclined angle and thick seam and its similar working face and the training of the coal cutter driver.
In order to achieve the overall stability of hydraulic supports and to strengthen the supports at the lower end in the fully-mechanized caving face of large dip angle and thick coal seam,in recent years,the innovative"slash-arc-horizontal"pattern large-angle and extra-thick coal seams at fully-mechanized caving face has been invented. In the production practice,it is found that the shearer tends to retain the top layer while cutting the bottom layer in the cutting of the circular section and with the accumulation of the amount,the upper end of the circular section gradually moves up and the curvature of the circular section increases,which intensifies the risk of the support's toppling and affects the normal coal cutting. To solve this serious problem,the software integration method is used to dynamically simulate the complex process of cutting the coal at the top of the circular section of the shearer by itself,which visually shows the amount left by every cut and the accumulate amount by multiple cuts,and the simulation results are comprehensively analyzed. The results show that the coal cutting per knife is strictly in accordance with the value of the top cutting bottom of the first knife cutting,which can be used as the topping amount of the cutting head to compensate the shearer's top cutting amount to maintain the normal arc segment curvature.The simulation results provide a visualized material for the preparation of the working face of the fully-mechanized caving face of the large inclined angle and thick seam and its similar working face and the training of the coal cutter driver.
引文
[1]何满潮,朱国龙.“十三五”矿业工程发展战略研究[J].煤炭工程,2016,48(1):1-6.HE Manchao,ZHU Guolong.Research on development strategy of mining engineering in the Thirteenth Five-Year Plan[J].Coal Engineering,2016,48(1):1-6.
[2]王国法,李希勇,张传昌,等.8 m大采高综采工作面成套装备研发及应用[J].煤炭科学技术,2017,45(11):1-8.WANG Guofa,LI Xiyong,ZHANG Chuanchang,et al.Research and development and application of set equipment of 8 m large mining height fully-mechanized face[J].Coal Science and Technology,2017,45(11):1-8.
[3]范京道.智能化无人综采技术[M].北京:煤炭工业出版社,2017:9-10.
[4]李梅,杨帅伟,孙振明,等.智慧矿山框架与发展前景研究[J].煤炭科学技术,2017,45(1):121-128,134.LI Mei,YANG Shuaiwei,SUN Zhenming,et al.Study on framework and development prospects of intelligent mine[J].Coal Science and Technology,2017,45(1):121-128,134.
[5]伍永平,贠东风,张淼丰.大倾角煤层综采基本问题研究[J].煤炭学报,2000,25(5):465-468.WU Yongping,YUN Dongfeng,ZHANG Miaofeng.Study on the elementary problems of fully-mechanized coal mining in greater pitching seam[J].Journal of China Coal Society,2000,25(5):465-468.
[6]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.
[7]伍永平.绿水洞煤矿大倾角煤层综采技术研究[R].西安:西安矿业学院,1996.
[8]贠东风,雷奇,伍永平,等.大倾角煤层长壁综采面上端头支护技术[J].煤炭技术,2017,36(3):9-11.YUN Dongfeng,LEI Qi,WU Yongping,et al.The technology of tail T-junction in the fully-mechanized long wall mining in steeply dipping seam[J].Coal Technology,2017,36(3):9-11.
[9]贠东风,刘柱,程文东,等.大倾角厚煤层综放支架侧护板载荷监测研究[J].煤炭科学技术,2016,44(9):145-149.YUN Dongfeng,LIU Zhu,CHENG Wendong,et al.Study on loading monitoring of side guard plate powered support of fully-mechanized top coal caving mining in high inclined thick seam[J].Coal Science and Technology,2016,44(9):145-149.
[10]伍永平,胡博胜,解盘石,等.大倾角长壁工作面飞矸灾害区域治理技术[J].煤炭科学技术,2017,45(2):1-5.WU Yongping,HU Bosheng,XIE Panshi,et al.Flying gangue regional control technology in longwall mining face of steeply dipping seam[J].Coal Science and Technology,2017,45(2):1-5.
[11]王红伟,伍永平,解盘石,等.大倾角变角度综放工作面顶板运移与支架稳定性分析[J].中国矿业大学学报,2017,46(3):507-513.WANG Hongwei,WU Yongping,XIE Panshi,et al.Research on strata movement and support stability of fully mechanized sublevel caving workface with variable angle in steeply dipping seam[J].Journal of china University&Technology,2017,46(3):507-513.
[12]王金安,焦军灵,程文东,等.论大倾角长壁综放工作面圆弧段对支架稳定性的控制作用[J].煤炭学报,2015,40(10):2361-2369.WANG Jinan,JIAO Junling,CHENG Wendong,et al.Roles of arc segment in controlling the support stability in longwall fully mechanized top coal caving mining face of steeply inclined coal seam[J].Journal of China Coal Society,2015,40(10):2361-2369.
[13]辛家祥.大倾角工作面两巷布置及端头支护方式研究[J].煤矿开采,2015,20(6):31-33.XIN Jiaxiang.Study on roadway layout and the face end support pattern for large inclined angle working face[J].Coal Ming Technology,2015,20(6):31-33.
[14]张守祥.高产高效工作面端头支护的研究[J].煤矿机电,2000,7(3):7-12.ZHOU Shouxiang.Research on the T-junction supporting of high output and high efficiency face[J].Colliery Mechanical,2000,7(3):7-12.
[15]刘峻峰.大倾角特厚煤层综放工艺系统复杂性研究[D].西安:西安科技大学,2003.
[16]索永录.分层综采工作面底板起伏变化机理及控制[J].西安矿业学院学报,1999,19(2):101-104.SUO Yonglu.Mechanism and control of floor ups and downs in slicing fully mechanized face[J].Journal of Xi’an Mining Institute,1999,19(2):101-104.
[17]贠东风,张袁浩,陈广平,等.大倾角不稳定松散煤层综放面合理布置形式研究[J].煤炭工程,2016,49(1):7-10.YUN Dongfeng,ZHANG Yuanhao,CHEN Guangping,et al.Discussion on reasonable layout of fully mechanized top coal caving face in steeply dipping,unstable and loose coal seam[J].Coal Engineering,2016,49(1):7-10.
[18]雷奇,贠东风,伍永平,等.大倾角长壁综采“三机”选型配套关键技术[J].煤矿开采,2017,22(1):36-40.Lei Qi,Yun Dongfeng,Wu Yongping,et al.Key technique of‘three machine’selection and matching of long wall fully mechanized mining with large inclination angle[J].Coal Mining Technology,2017,22(1):36-40.
[19]张袁浩.大倾角长壁综放工作面圆弧段割煤工艺与支架稳定性研究[D].西安:西安科技大学,2016.
[20]谢俊文,李德玺,上官科峰.急-倾斜厚煤层高效综放长壁开采技术[M].北京:煤炭工业出版社,2005.
[2]王国法,李希勇,张传昌,等.8 m大采高综采工作面成套装备研发及应用[J].煤炭科学技术,2017,45(11):1-8.WANG Guofa,LI Xiyong,ZHANG Chuanchang,et al.Research and development and application of set equipment of 8 m large mining height fully-mechanized face[J].Coal Science and Technology,2017,45(11):1-8.
[3]范京道.智能化无人综采技术[M].北京:煤炭工业出版社,2017:9-10.
[4]李梅,杨帅伟,孙振明,等.智慧矿山框架与发展前景研究[J].煤炭科学技术,2017,45(1):121-128,134.LI Mei,YANG Shuaiwei,SUN Zhenming,et al.Study on framework and development prospects of intelligent mine[J].Coal Science and Technology,2017,45(1):121-128,134.
[5]伍永平,贠东风,张淼丰.大倾角煤层综采基本问题研究[J].煤炭学报,2000,25(5):465-468.WU Yongping,YUN Dongfeng,ZHANG Miaofeng.Study on the elementary problems of fully-mechanized coal mining in greater pitching seam[J].Journal of China Coal Society,2000,25(5):465-468.
[6]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.
[7]伍永平.绿水洞煤矿大倾角煤层综采技术研究[R].西安:西安矿业学院,1996.
[8]贠东风,雷奇,伍永平,等.大倾角煤层长壁综采面上端头支护技术[J].煤炭技术,2017,36(3):9-11.YUN Dongfeng,LEI Qi,WU Yongping,et al.The technology of tail T-junction in the fully-mechanized long wall mining in steeply dipping seam[J].Coal Technology,2017,36(3):9-11.
[9]贠东风,刘柱,程文东,等.大倾角厚煤层综放支架侧护板载荷监测研究[J].煤炭科学技术,2016,44(9):145-149.YUN Dongfeng,LIU Zhu,CHENG Wendong,et al.Study on loading monitoring of side guard plate powered support of fully-mechanized top coal caving mining in high inclined thick seam[J].Coal Science and Technology,2016,44(9):145-149.
[10]伍永平,胡博胜,解盘石,等.大倾角长壁工作面飞矸灾害区域治理技术[J].煤炭科学技术,2017,45(2):1-5.WU Yongping,HU Bosheng,XIE Panshi,et al.Flying gangue regional control technology in longwall mining face of steeply dipping seam[J].Coal Science and Technology,2017,45(2):1-5.
[11]王红伟,伍永平,解盘石,等.大倾角变角度综放工作面顶板运移与支架稳定性分析[J].中国矿业大学学报,2017,46(3):507-513.WANG Hongwei,WU Yongping,XIE Panshi,et al.Research on strata movement and support stability of fully mechanized sublevel caving workface with variable angle in steeply dipping seam[J].Journal of china University&Technology,2017,46(3):507-513.
[12]王金安,焦军灵,程文东,等.论大倾角长壁综放工作面圆弧段对支架稳定性的控制作用[J].煤炭学报,2015,40(10):2361-2369.WANG Jinan,JIAO Junling,CHENG Wendong,et al.Roles of arc segment in controlling the support stability in longwall fully mechanized top coal caving mining face of steeply inclined coal seam[J].Journal of China Coal Society,2015,40(10):2361-2369.
[13]辛家祥.大倾角工作面两巷布置及端头支护方式研究[J].煤矿开采,2015,20(6):31-33.XIN Jiaxiang.Study on roadway layout and the face end support pattern for large inclined angle working face[J].Coal Ming Technology,2015,20(6):31-33.
[14]张守祥.高产高效工作面端头支护的研究[J].煤矿机电,2000,7(3):7-12.ZHOU Shouxiang.Research on the T-junction supporting of high output and high efficiency face[J].Colliery Mechanical,2000,7(3):7-12.
[15]刘峻峰.大倾角特厚煤层综放工艺系统复杂性研究[D].西安:西安科技大学,2003.
[16]索永录.分层综采工作面底板起伏变化机理及控制[J].西安矿业学院学报,1999,19(2):101-104.SUO Yonglu.Mechanism and control of floor ups and downs in slicing fully mechanized face[J].Journal of Xi’an Mining Institute,1999,19(2):101-104.
[17]贠东风,张袁浩,陈广平,等.大倾角不稳定松散煤层综放面合理布置形式研究[J].煤炭工程,2016,49(1):7-10.YUN Dongfeng,ZHANG Yuanhao,CHEN Guangping,et al.Discussion on reasonable layout of fully mechanized top coal caving face in steeply dipping,unstable and loose coal seam[J].Coal Engineering,2016,49(1):7-10.
[18]雷奇,贠东风,伍永平,等.大倾角长壁综采“三机”选型配套关键技术[J].煤矿开采,2017,22(1):36-40.Lei Qi,Yun Dongfeng,Wu Yongping,et al.Key technique of‘three machine’selection and matching of long wall fully mechanized mining with large inclination angle[J].Coal Mining Technology,2017,22(1):36-40.
[19]张袁浩.大倾角长壁综放工作面圆弧段割煤工艺与支架稳定性研究[D].西安:西安科技大学,2016.
[20]谢俊文,李德玺,上官科峰.急-倾斜厚煤层高效综放长壁开采技术[M].北京:煤炭工业出版社,2005.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |