中厚煤层复合顶板切顶卸压无煤柱自成巷技术应用研究
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摘要
切顶卸压无煤柱自成巷技术可通过留巷顺槽顶板的预裂切缝,利用顶板垮落矸石对采空区进行有效充填,从而从根本上实现无煤柱开采。为进一步完善切顶卸压无煤柱自成巷技术体系,探究不同地质条件下的顶板切缝卸压效应,论文以塔山煤矿8304工作面中厚煤层复合顶板条件作为工程实例,进行该地质条件下的切顶卸压无煤柱自成巷试验。首先本文对切顶成巷的作用机理及工艺流程进行总结,随后针对8304工作面辅运顺槽顶板的具体岩性变化进行切顶关键参数设计,最后于现场进行了实地工程试验。现场试验结果表明,最终成巷顶底板移近量为261 mm,两帮移近量为63 mm,留巷断面可满足8305工作面复采需求,该试验的成功可为切顶卸压自动成巷技术的进一步推广应用提供一定的借鉴。
The roof cutting pressure release gob-side entry retaining technology can take use of the gangue to fill up the goaf effectively by the pre-splitting of entry roof, and realize the mining without coal pillar fundamentally. In order to further improve the technology system and explore the roof cutting effect under different geological conditions, this paper takes the medium thick coal seam and composite roof conditions of 8304 working face in Tashan Coal Mine as an engineering example to carry out the roof cutting pressure release gob-side entry retaining test. Firstly, this paper summarizes the mechanism and technological process about the technology of god-side entry retaining by roof cutting. Then the key parameters of roof cutting are designed according to the specific lithological changes of the auxiliary channel roof of 8304 working face. And finally the field engineering test is carried out. The field test results show that the final roadway roof and floor displacement is 261 mm and the two sides displacement is 63 mm, and the roadway section can meet the needs of 8305 working face's mining work. The success of the test can provide a certain reference for the further popularization and application of roof cutting pressure release god-side entry retaining technology.
The roof cutting pressure release gob-side entry retaining technology can take use of the gangue to fill up the goaf effectively by the pre-splitting of entry roof, and realize the mining without coal pillar fundamentally. In order to further improve the technology system and explore the roof cutting effect under different geological conditions, this paper takes the medium thick coal seam and composite roof conditions of 8304 working face in Tashan Coal Mine as an engineering example to carry out the roof cutting pressure release gob-side entry retaining test. Firstly, this paper summarizes the mechanism and technological process about the technology of god-side entry retaining by roof cutting. Then the key parameters of roof cutting are designed according to the specific lithological changes of the auxiliary channel roof of 8304 working face. And finally the field engineering test is carried out. The field test results show that the final roadway roof and floor displacement is 261 mm and the two sides displacement is 63 mm, and the roadway section can meet the needs of 8305 working face's mining work. The success of the test can provide a certain reference for the further popularization and application of roof cutting pressure release god-side entry retaining technology.
引文
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[13]孙晓明,刘鑫,梁广峰等.薄煤层切顶卸压沿空留巷关键参数研究[J].岩石力学与工程学报,2014,33(7):1449-1456.
[14]郭志飚,王将,曹天培等.薄煤层切顶卸压自动成巷关键参数研究[J].中国矿业大学学报,2016,45(9):879-885.
[15]何满潮,高玉兵,杨军等.厚煤层快速回采切顶卸压无煤柱自成巷工程试验[J].岩土力学,2018,39(1):254-264.
[16]何满潮,陈上元,郭志飚等.切顶卸压沿空留巷围岩结构控制及其工程应用[J].中国矿业大学学报,2017,46(9):959-969.
[17]何满潮,王炯,孙晓明等.负泊松比效应锚索的力学特性及其冲击地压防治中的应用研究[J].煤炭学报,2014,39(2):214-221.
[2]华心祝.我国沿空留巷支护技术发展现状及改进建议[J].煤炭科学技术,2016,34(12):78-81.
[3]柏建彪,周华强,侯朝炯等.沿空留巷巷旁支护技术的发展[J].中国矿业大学学报,2004,33(2):183-186.
[4]漆泰岳,郭育光,侯朝炯.沿空留巷整体浇注护巷带适应性研究[J].煤炭学报,1999,24(3):256-260.
[5]张农,陈红,陈瑶.千米深井高地压软岩巷道沿空留巷工程案例[J].煤炭学报,2015,40(3):494-501.
[6]张东升,马立强,冯光明.综放巷内充填原位沿空留巷技术[J].岩石力学与工程学报,2005,24(4):1164-1168.
[7]康红普,牛多龙,张镇等.深部沿空留巷围岩变形特征与支护技术[J].岩石力学与工程学报,2010,29(10):1977-1987.
[8]布铁勇,冯光明,贾凯军等.大采高综采沿空留巷巷旁充填支护技术[J].煤炭科学技术,2010,11(38):41-44.
[9]谭云亮,于凤海,宁建国等.沿空巷旁支护适应性原理与支护方法[J].煤炭学报,2016,41(2):376-382.
[10]陈勇,柏建彪,王襄禹等.沿空留巷巷内支护技术研究与应用[J].煤炭学报,2012,37(6):903-910.
[11]何满潮,宋振骐,王安等.长壁开采切顶短壁梁理论及其110工法—第三次矿业科学技术变革[J].煤炭科技,2017(1):1-9.
[12]马新根,何满潮,王炯等.雁崖煤矿8304工作面沿空留巷条件下切眼后方硐室支护设计研究[J].煤炭科技,2017,36(12):30-33.
[13]孙晓明,刘鑫,梁广峰等.薄煤层切顶卸压沿空留巷关键参数研究[J].岩石力学与工程学报,2014,33(7):1449-1456.
[14]郭志飚,王将,曹天培等.薄煤层切顶卸压自动成巷关键参数研究[J].中国矿业大学学报,2016,45(9):879-885.
[15]何满潮,高玉兵,杨军等.厚煤层快速回采切顶卸压无煤柱自成巷工程试验[J].岩土力学,2018,39(1):254-264.
[16]何满潮,陈上元,郭志飚等.切顶卸压沿空留巷围岩结构控制及其工程应用[J].中国矿业大学学报,2017,46(9):959-969.
[17]何满潮,王炯,孙晓明等.负泊松比效应锚索的力学特性及其冲击地压防治中的应用研究[J].煤炭学报,2014,39(2):214-221.