首页    期刊浏览 2024年07月08日 星期一
登录注册

文章基本信息

  • 标题:A novel short‐wall caving zone backfilling technique for controlling mining subsidence
  • 本地全文:下载
  • 作者:Wenbing Liu ; Jingmin Xu ; Weibing Zhu
  • 期刊名称:Energy Science & Engineering
  • 电子版ISSN:2050-0505
  • 出版年度:2019
  • 卷号:7
  • 期号:5
  • 页码:2124-2137
  • DOI:10.1002/ese3.418
  • 出版社:John Wiley & Sons, Ltd.
  • 摘要:

    Mining‐induced voids are the main circulation pathways for underground fluids such as water and coalbed methane. The collapse of these voids transmits to the ground surface, resulting in subsidence and building collapse. Accordingly, effective and feasible solutions are needed to control surface subsidence. In this study, a novel technique of void filling in the short‐wall caving zone was proposed to better control surface subsidence in thin coal seam mining. The width of the working face plays a key role in the proposed technique. A maximum surface subsidence value was predicted using numerical simulation and physical simulation experiments with different working face widths. The results indicate that the appropriate working face width should be less than 50 m for the studied coal mine. In this example, the surface subsidence coefficient was less than the standard value for initial damage to rural structures. Both advancing speed and productivity of the working face were achieved using the proposed technique because the filling and mining processes were conducted simultaneously on different faces. The results suggest that surface subsidence during thin coal seam mining could be controlled using the proposed technique. This technique can also help mitigate mining‐induced water inrush and gas leakage disasters by filling voids.

  • 关键词:backfilling technology;key stratum;short‐wall caving zone;surface subsidence;void filling
国家哲学社会科学文献中心版权所有