煤炭工程 ›› 2014, Vol. 46 ›› Issue (3): 45-47.doi: 10.11799/ce201403015

• 生产技术 • 上一篇    下一篇

国内首个450m超长综采工作面安全开采技术研究

宋立兵1,王庆雄2   

  1. 1. 中国神华集团神东煤炭集团公司哈拉沟煤矿
    2. 神东煤炭集团公司哈拉沟煤矿
  • 收稿日期:2013-01-29 修回日期:2013-04-04 出版日期:2014-03-14 发布日期:2014-03-15
  • 通讯作者: 宋立兵 E-mail:wangqingxiong2222@126.com

Safe Ming Technology of the First 450 Meters Long Fully Mechanized Mining Face in China

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  • Received:2013-01-29 Revised:2013-04-04 Online:2014-03-14 Published:2014-03-15

摘要:

基于神东矿区哈拉沟煤矿12上101-2综采面实践分析,对国内首个450m超长综采面矿压规律、支架工作阻力、开采中遇到的问题及措施与开采技术经济效益进行了分析总结。结果表明:工作面老顶初次来压显现呈现分时分段特征,且老顶初次来压显现强烈。工作面存在大小周期来压现象,周期来压期间沿工作面倾向压力分布呈现“三峰值W型”特征。普通采高450m超长工作面开采,两顺槽超前影响范围和影响程度类似于一般长度工作面。通过计算得出12上101-2工作面支架合理工作阻力为10569kN,现所采用的支架能够满足支护要求。450m超长工作面掘进率明显降低,回采率、工效和年产量明显提高,技术和经济效益显著。研究结果为神东矿区类似条件下安全高效开采提供了技术保障。

关键词: 超长综采面, 矿压规律, 支架工作阻力, 技术经济效益, 安全开采

Abstract:

Based on analysis of 12 on 101-2 mining face practice in Ha Lagou coal mine of Shendong mine area, pressure law, working resistance of support, the problems encountered in the mining and economic and mining technology efficiency were analyzed and summarized of the first 450 meters overlong fully mechanized mining face. The results show that: the first pressure behavior presents a segments characteristics and being of strong pressure behavior. The size of cycle exists and the pressure distribution along the face presented “three peak W-type” characteristics. The ahead affect scope and impact of two crossheading in the 450 meters overlong face are similar to the general length face. The reasonable support resistance of 12 on 101-2 face is 10569kN and the adopted supports are able to meet the requirements of the supporting. The tunneling rate is significantly reduced, recovery rate, ergonomics and the annual output is significantly improved in 450 meters overlong face. Safe and efficient mining technical support is provided for similar conditions in Shendong mine area.

Key words: overlong fully mechanized mining face, pressure law, support working resistance, technical and economic benefits, safe mining