煤炭工程 ›› 2022, Vol. 54 ›› Issue (2): 67-72.doi: 10.11799/ce202202012

• 生产技术 • 上一篇    下一篇

顶分层大采高综采架后高效铺网试验研究

张震,张洪清,谭德永,冯立友   

  1. 1. 天地科技股份有限公司
    2. 扎赉诺尔煤业有限责任公司
  • 收稿日期:2021-08-19 修回日期:2021-10-26 出版日期:2022-02-14 发布日期:2022-07-06
  • 通讯作者: 张震 E-mail:411424077@qq.com

The Experimental Research on High-efficiency Netting Behind the Hydraulic Support for Fully Mechanized Mining with Large Mining Height in the Top Slicing

  • Received:2021-08-19 Revised:2021-10-26 Online:2022-02-14 Published:2022-07-06

摘要: 针对松软围岩特厚煤层整层综放开采高含矸率、低回收率的问题,论文提出了“顶分层大采高综采架后高效铺网+下分层整层综放”开采方法,确定了顶分层大采高综采架后高效铺网的运网、挂网、展网、联网工艺,研发了工作面架后高效铺网材料运输系统、自动展网系统,并确定了架后高效联网方式,开展了高效铺网系统地面试验,对柔性网压缩效果、铺网运输系统、展网工序及快速联网时间进行了测试,以灵东煤矿为工程背景,分析了大采高综采架后高效铺网系统井下可行性。试验结果表明:大采高综采架后高效铺网运输系统拉移速度43.1~49.1m/min,联网速度1.33m/min,支架后方柔性网卷可顺利实现整体铺展,未出现网卷扭曲及紧缩现象,展网有效可行|大采高架后铺网整体工序作业时间为87.5min,工作面年产能力可达到600万t以上,能够实现工作面的高产高效。该试验成果对松软围岩特厚煤层高效高回收率开采具有重要的参考意义。

关键词: 特厚煤层, 分层开采, 大采高综采, 架后高效铺网

Abstract: Aiming at the problems of high gangue content and low recovery rate of the whole fully mechanized caving mining in soft surrounding rock and extra-thick coal seam, the paper put forward the "top layer and large mining height fully mechanized mining frame after high-efficiency netting + lower slicing whole layer fully mechanized caving" mining Method,determined the netting, hanging, spreading, and networking processes for efficient netting after the top-slice large-cutting height fully-mechanized mining frame,developed an efficient net-laying material transportation system and an automatic net-spreading system after the working face frame, and determined the efficient netting method after the rack.The ground test of the efficient netting system was carried out to test the compression effect of the flexible net, the efficiency of the netting transportation system, the effectiveness of the netting process and the speed of networking.The test results show that the pulling speed of the high-efficiency netting and transportation system behind the large mining height fully-mechanized mining frame is 43.1m/min~49.1m/min, and the networking speed is 1.33m/min.The flexible net roll at the rear of the support can be spread smoothly without any distortion or shrinkage of the net roll. The net roll is effective and feasible; The overall process operation time of the net laying is 87.5 minutes, and the annual production capacity of the working face can reach more than 6 million tons.It can realize the high productivity and efficiency of the working face.The test results have important reference significance for the high-efficiency and high-recovery mining of soft surrounding rock and extra-thick coal seams.

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