切顶卸压沿空留巷巷旁挡矸支护技术研究与应用
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摘要
为解决无煤柱沿空留巷巷旁窜矸、难于维护及巷帮变形量大等问题,针对顺和煤矿综采工作面上覆岩层地质特性,并结合矿井以往的施工经验,提出了切顶卸压沿空留巷巷旁挡矸支护技术,主要通过掘进过程中恒阻锚索主动支护、回采前切顶爆破、回采过程中36U型钢棚配合菱形网挡矸支护协同作用,建立顶板主动被动联合支护、巷旁刚性柔性联合支护体系,实现了沿空留巷巷旁支护不蹿矸、巷道变形量小的效果,避免了回采过程中帮部二次扩帮返修的问题。在顺和煤矿2108轨道巷回采过程中的成功实践,为同等地质条件下沿空留巷的支护提供参考。
In order to solve the problems of refuse rising,difficult maintenance and large deformation of roadway side in gob-side retaining roadway without coal pillars,in view of the geological characteristics of overburden strata in fully-mechanized mining face of Shunhe Coal Mine and combined with the previous construction experience of the mine,this paper puts forward the support technology of refuse near gob-side retaining roadway with roof cutting and pressure relief,mainly through active support of constant resistance anchor cables during excavation process,the 36 U steel shed cooperates with diamond mesh retaining gangue support in the process of roof cutting blasting and mining,establishes active and passive roof combined support and rigid and flexible roadside combined support system,achieves the effect of retaining roadside support along goaf without leaping gangue and small deformation of roadway,and avoidance of the problem of secondary expansion and repair in the recovery process.Successful practice in mining along the roadway of track 2108 in Shunhe Coal Mine provides a reference for the support of gob-side retaining roadway under the same geological conditions.
In order to solve the problems of refuse rising,difficult maintenance and large deformation of roadway side in gob-side retaining roadway without coal pillars,in view of the geological characteristics of overburden strata in fully-mechanized mining face of Shunhe Coal Mine and combined with the previous construction experience of the mine,this paper puts forward the support technology of refuse near gob-side retaining roadway with roof cutting and pressure relief,mainly through active support of constant resistance anchor cables during excavation process,the 36 U steel shed cooperates with diamond mesh retaining gangue support in the process of roof cutting blasting and mining,establishes active and passive roof combined support and rigid and flexible roadside combined support system,achieves the effect of retaining roadside support along goaf without leaping gangue and small deformation of roadway,and avoidance of the problem of secondary expansion and repair in the recovery process.Successful practice in mining along the roadway of track 2108 in Shunhe Coal Mine provides a reference for the support of gob-side retaining roadway under the same geological conditions.
引文
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[10] 王国法.液压支架控制技术[M].北京:煤炭工业出版社,2010.
[11] 李丽伟.综采切顶卸压沿空留巷无煤柱开采技术研究[D].邯郸:河北工程大学,2017.
[12] 孙恒虎,赵炳利.沿空留巷的理论与实践[M].北京:煤炭工业出版社,1993.
[13] 柏建彪.沿空掘巷围岩控制[M].徐州:中国矿业大学出版社,2006.
[14] 韩昌良,张农,姚亚虎,等.沿空留巷厚层复合顶板传递承载机制[J].岩土力学,2013,34(S1):318-323.Han Changliang,Zhang Nong,Yao Yahu,et al.Transfer bearing mechanism of thick composite roof in gob-side entry retaining[J].Rock and Soil Mechanics,2013,34(S1):318-323.
[15] 钱鸣高,石平五,许家林.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2010.
[16] 万海鑫,张凯,陈冬冬,等.轿子山矿切顶卸压沿空留巷技术[J].煤矿安全,2014,45(12):85-88.Wan Haixin,Zhang Kai,Chen Dongdong,et al.Technology of cutting and pressure discharging along gob in Jiaozishan Mine[J].Safety in Coal Mines,2014,45(12):85-88.
[17] 蔡洪林,尹贤坤,汤朝均,等.切顶卸压沿空留巷无煤柱开采技术研究与应用[J].矿业安全与环保,2012,39(5):15-18.Cai Honglin,Yin Xiankun,Tang Zhaojun,et al.Research and application of no pillar mining technology for gob-side entry retaining with top cutting pressure[J].Mining Safety and Environmental Protection,2012,39(5):15-18.
[18] 毛怀勇.唐山沟煤矿切顶卸压沿空留巷无煤柱开采技术[J].煤炭工程,2016,48(8):12-14.Mao Huaiyong.Coal mining technology for gob-side entry retaining with top cutting pressure in Tangshangou Coal Mine[J].Coal Engineering,2016,48(8):12-14.
[19] 刘西煜.屯兰矿切顶卸压沿空留巷无煤柱开采技术研究[J].山西焦煤科技,2016(S1):28-29.Liu Xiyu.Study on mining technology of gob-side entry retaining without cutting pillar in Tunlan Mine[J].Shanxi Cooking Coal Science & Technology,2016(S1):28-29.
[20] 刘昆.高地应力软岩巷道沿空留巷煤帮控制技术[J].煤炭科学技术,2013,41(10):38-41.Liu Kun.Rib control technology of gob-side entry retaining in high stress soft rock roadway[J].Coal Science and Technology,2013,41(10):38-41.
[2] 施小平.采场覆岩关键层对岩体变形的影响分析[J].矿业研究与开发,2015,36(8):15-17.Shi Xiaoping.Analysis of the influence of key strata on the deformation of the rock mass in the mining field[J].Mining Research and Development,2015,36(8):15-17.
[3] 王红胜,李树刚,张新志,等.沿空巷道基本顶断裂结构影响窄煤柱稳定性分析[J].煤炭科学技术,2014,42(2):19-22.Wang Hongsheng,Li Shugang,Zhang Xinzhi,et al.Analysis on stability of narrow coal pillar influenced by main roof fracture structure of gob-side roadway[J].Coal Science and Technology,2014,42(2):19-22.
[4] 石建军,马念杰,白忠胜.沿空留巷顶板断裂位置分析及支护技术[J].煤炭科学技术,2013,41(7):35-37.Shi Jianjun,Ma Nianjie,Bai Zhongsheng.Analysis on roof broken location of gateway retained along goaf and technology of roof support[J].Coal Science and Technology,2013,41(7):35-37.
[5] 李迎富,华心祝.沿空留巷上覆岩层关键块稳定性力学分析及巷旁充填体宽度确定[J].岩土力学,2012,33(4):17-19.Li Yingfu,Hua Xinzhu.Mechanical analysis of stability of the key blocks in the overlying strata along the goaf and determination of the width of the side filling body[J].Rock and Soil Mechanics,2012,33(4):17-19.
[6] 王应启,陈勇,郑有雷,等.深部开采矿井矿压异常显现研究[J].煤炭科学技术,2011,39(6):15-17.Wang Yingqi,Chen Yong,Zheng Youlei,et al.Study on abnormal mine strata pressure during deep mining[J].Coal Science and Technology,2011,39(6):15-17.
[7] 宋润权,谢家鹏.切顶卸压技术在工作面及沿空巷道维护中的应用[J].煤炭科技,2012(3):131.Song Runquan,Xie Jiapeng.Application of roof cutting and sure relief technology in working face and gob-side entry maintenance[J].Coal Science and Technology,2012(3):131.
[8] 崔亚仲.神东矿区快速沿空留巷技术研究及应用[J].煤炭科学技术,2014,42(1):129-133.Cui Yazhong.Research and application of Shendong Mining Area quickly along gob side technologies[J].Coal Science and Technology,2014,42(1):129-133.
[9] 赵健,张鹏.沿空留巷围岩给定变形及巷旁支护时机研究[J].煤炭工程,2017,49(2):68-71.Zhao Jian,Zhang Peng.Research on the given deformation of surrounding rock and the timing of roadway-side support in gob-side entry retaining[J].Coal Engineering,2017,49(2):68-71.
[10] 王国法.液压支架控制技术[M].北京:煤炭工业出版社,2010.
[11] 李丽伟.综采切顶卸压沿空留巷无煤柱开采技术研究[D].邯郸:河北工程大学,2017.
[12] 孙恒虎,赵炳利.沿空留巷的理论与实践[M].北京:煤炭工业出版社,1993.
[13] 柏建彪.沿空掘巷围岩控制[M].徐州:中国矿业大学出版社,2006.
[14] 韩昌良,张农,姚亚虎,等.沿空留巷厚层复合顶板传递承载机制[J].岩土力学,2013,34(S1):318-323.Han Changliang,Zhang Nong,Yao Yahu,et al.Transfer bearing mechanism of thick composite roof in gob-side entry retaining[J].Rock and Soil Mechanics,2013,34(S1):318-323.
[15] 钱鸣高,石平五,许家林.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2010.
[16] 万海鑫,张凯,陈冬冬,等.轿子山矿切顶卸压沿空留巷技术[J].煤矿安全,2014,45(12):85-88.Wan Haixin,Zhang Kai,Chen Dongdong,et al.Technology of cutting and pressure discharging along gob in Jiaozishan Mine[J].Safety in Coal Mines,2014,45(12):85-88.
[17] 蔡洪林,尹贤坤,汤朝均,等.切顶卸压沿空留巷无煤柱开采技术研究与应用[J].矿业安全与环保,2012,39(5):15-18.Cai Honglin,Yin Xiankun,Tang Zhaojun,et al.Research and application of no pillar mining technology for gob-side entry retaining with top cutting pressure[J].Mining Safety and Environmental Protection,2012,39(5):15-18.
[18] 毛怀勇.唐山沟煤矿切顶卸压沿空留巷无煤柱开采技术[J].煤炭工程,2016,48(8):12-14.Mao Huaiyong.Coal mining technology for gob-side entry retaining with top cutting pressure in Tangshangou Coal Mine[J].Coal Engineering,2016,48(8):12-14.
[19] 刘西煜.屯兰矿切顶卸压沿空留巷无煤柱开采技术研究[J].山西焦煤科技,2016(S1):28-29.Liu Xiyu.Study on mining technology of gob-side entry retaining without cutting pillar in Tunlan Mine[J].Shanxi Cooking Coal Science & Technology,2016(S1):28-29.
[20] 刘昆.高地应力软岩巷道沿空留巷煤帮控制技术[J].煤炭科学技术,2013,41(10):38-41.Liu Kun.Rib control technology of gob-side entry retaining in high stress soft rock roadway[J].Coal Science and Technology,2013,41(10):38-41.