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急倾斜煤层流态化反循环钻采技术研究

张洪伟 程敬义 赵毅鑫 李杨 万志军 王春耀

张洪伟, 程敬义, 赵毅鑫, 李杨, 万志军, 王春耀. 急倾斜煤层流态化反循环钻采技术研究[J]. 矿业科学学报, 2021, 6(3): 296-304. doi: 10.19606/j.cnki.jmst.2021.03.006
引用本文: 张洪伟, 程敬义, 赵毅鑫, 李杨, 万志军, 王春耀. 急倾斜煤层流态化反循环钻采技术研究[J]. 矿业科学学报, 2021, 6(3): 296-304. doi: 10.19606/j.cnki.jmst.2021.03.006
Zhang Hongwei, Cheng Jingyi, Zhao Yinxin, Li Yang, Wan Zhijun, Wang Chunyao. Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam[J]. Journal of Mining Science and Technology, 2021, 6(3): 296-304. doi: 10.19606/j.cnki.jmst.2021.03.006
Citation: Zhang Hongwei, Cheng Jingyi, Zhao Yinxin, Li Yang, Wan Zhijun, Wang Chunyao. Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam[J]. Journal of Mining Science and Technology, 2021, 6(3): 296-304. doi: 10.19606/j.cnki.jmst.2021.03.006

急倾斜煤层流态化反循环钻采技术研究

doi: 10.19606/j.cnki.jmst.2021.03.006
基金项目: 

国家自然科学基金 52074293

中央高校基本科研业务费专项资金 2020XJNY03

内蒙古自治区科技重大专项 2019GG140

详细信息
    作者简介:

    张洪伟(1990—),男,山东邹城人,讲师,博士,硕士生导师,主要从事煤炭智能开采、高温岩石力学与地热开发等方面的教学与研究工作。Tel: 18800169008,Email:hongwei@cumtb.edu.cn

  • 中图分类号: TU45

Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam

  • 摘要: 急倾斜煤层是广泛赋存于我国西部、南部等地区的复杂难采煤层,研发新型急倾斜煤层流态化无人开采方法对保障急倾斜煤层安全生产意义重大。为实现反循环连续式流态化开采,本文提出了一种深部急倾斜煤层流态化反循环钻采设备及工艺,设计了急倾斜煤层流态化反循环钻采一体机,论述了该钻采一体机的组成、架设方式和基本工作原理;提出了钻采平行作业工序,并解算了该反循环钻采方法的采煤工效、遗煤率、水射流辅助割煤和冲蚀落煤效率。结果表明,反循环钻采刀盘的直径越大,工作面采出率越高;在设计开采孔之间的重叠距离时,需要根据实际地质条件和目标采出率选用刀盘直径和开采孔重叠长度,保证较高的煤炭采出率;煤炭年产量随着刀盘推进速度的加快线性增加;钻采速度参数的选择和高压水射流辅助割煤工序对煤炭产量的提升具有重要影响。
  • 图  1  急倾斜煤层流态化反循环钻采方法示意图

    Figure  1.  The reverse-circulated excavating-drilling fluidized mining method for steep-inclined coal seam

    图  2  反循环钻采一体机示意图

    Figure  2.  The reverse-circulated excavating-drilling mining machine

    图  3  反循环钻采一体机及钻机工位转换示意图(以导孔钻机为例)

    Figure  3.  The reverse-circulated excavating-drilling machine and its rig station adjusting method (take the hole drilling machine for example)

    图  4  钻采平行作业示意图

    Figure  4.  Schematic of the parallel excavating and drilling method

    图  5  反循环钻采刀盘及割煤示意图

    Figure  5.  Schematic of the reverse-circulated cutting plate

    图  6  反循环钻采工艺和生产系统示意图

    Figure  6.  Schematic of reverse-circulated drilling and its production system

    图  7  反循环钻采中顶底板遗留煤

    Figure  7.  Residual coal from the reverse-circulated mining system

    图  8  重叠长度和遗煤率之间的关系

    Figure  8.  Relationship between the overlap length and coal residual rate

    图  9  煤炭年产量估算

    Figure  9.  Estimation of the coal annual production

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  • 收稿日期:  2020-12-08
  • 修回日期:  2021-03-25
  • 刊出日期:  2021-06-01

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