极近距离煤层同采工作面错距优化研究

彭志妍, 查文华

彭志妍，查文华.极近距离煤层同采工作面错距优化研究［J］.工矿自动化，2020,46（7）：94-99.. DOI: 10.13272/j.issn.1671-251x.2019110021
引用本文: 彭志妍，查文华.极近距离煤层同采工作面错距优化研究［J］.工矿自动化，2020,46（7）：94-99.. DOI: 10.13272/j.issn.1671-251x.2019110021
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PENG Zhiyan, ZHA Wenhua. PENG Zhiyan,ZHA Wenhua.Research on optimization of staggered distance on simultaneous mining faces in ultra-close coal seams［J］.Industry and Mine Automation，2020,46（7）：94-99.[J]. Journal of Mine Automation, 2020, 46(7): 94-99. DOI: 10.13272/j.issn.1671-251x.2019110021
Citation: PENG Zhiyan, ZHA Wenhua. PENG Zhiyan,ZHA Wenhua.Research on optimization of staggered distance on simultaneous mining faces in ultra-close coal seams［J］.Industry and Mine Automation，2020,46（7）：94-99.[J]. Journal of Mine Automation, 2020, 46(7): 94-99. DOI: 10.13272/j.issn.1671-251x.2019110021
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极近距离煤层同采工作面错距优化研究

  • 1.

    安徽理工大学 煤矿安全高效开采省部共建教育部重点实验室， 安徽 淮南232001

  • 2.

    安徽理工大学 能源与安全学院， 安徽 淮南232001

  • 3.

    东华理工大学 土木与建筑工程学院， 江西 南昌330013

基金项目: 

国家自然科学基金项目(51964002，51474005)

安徽省重点研究和开发计划资助项目（1804b06020361）

详细信息

  • 中图分类号: TD323

PENG Zhiyan,ZHA Wenhua.Research on optimization of staggered distance on simultaneous mining faces in ultra-close coal seams［J］.Industry and Mine Automation，2020,46（7）：94-99.

  • 1.

    Key Laboratory of Mine Safety and High-efficiency Mining Jointly Built by Province and Ministry of Education， Anhui University of Science and Technology， Huainan 232001， China

  • 2.

    School of Energy and Safety, Anhui University of Science and Technology, Huainan 232001, China

  • 3.

    School of Civil and Architecture Engineering, East China University of Technology, Nanchang 330013, China

摘要

    摘要
  • 摘要: 针对现有极近距离煤层联合开采研究方法获取开采错距存在较大误差的问题，以某煤矿9号和10号煤层为工程背景，分析了极近距离同采工作面在30，36，44 m 开采错距下的矿压规律，研究了3种开采错距下工作面支架工作阻力变化与支承压力的演化特征。结果表明：100402综采工作面支架工作阻力随开采错距增大呈现先减小后增大的特点，36 m开采错距下100402综采工作面倾斜方向支架工作阻力利用率变化幅度最为平稳；090402普采工作面超前支承压力峰值随开采错距增大呈现先减小后增大的演化特征，其与支架工作阻力变化规律一致；开采错距为36 m时上下工作面两巷受超前支承压力影响，前顶板锚杆压力变化平稳，顶板离层较小，离层量基本稳定在0.6 mm以内，说明36 m 开采错距合理，工作面两巷超前段锚杆压力与顶板离层略有增大，需加强巷道支护。
    Abstract: In view of problem that using existing ultra-close coal seam combined mining research methods to obtain mining staggered distance has bigger errors, taking No.9 and No.10 coal seams of a coal mine as engineering background, the mining pressure law of simultaneous mining face in ultra-close coal seams was analyzed under three kinds of mining staggered distances of 30, 36, 44 m. The evolution characteristics of working resistance changes and support pressure of the working face supports under the three mining staggered distance were studied. The results show that the working resistance of the support on 100402 fully mechanized working face decreases first and then increases with increase of mining staggered distance. The utilization rate of the working resistance of the support in the inclined direction of the 100402 fully mechanized working face has the most stable variation range under the 36 m mining staggered distance. The advance support pressure peak value of 090402 conventional mining face decreases first and then increases with the increase of mining staggered distance, which is consistent with the change law of working resistance of support. When the mining staggered distance is 36 m, the two roadways of the upper and lower working faces are affected by the advanced support pressure, the front roof bolt pressure changes steadily, the roof separation is small, and the amount of separation layer is basically stable within 0.6 mm, indicating that the 36 m mining staggered distance is reasonable, and the bolt pressure and roof separation in the advance section of the two roadways on the working face increase slightly, so the roadway support needs to be strengthened.
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出版历程
  • 刊出日期:  2020-07-19

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