...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mine water and the environment >Overburden Failure Associated with Mining Coal Seams in Close Proximity in Ascending and Descending Sequences Under a Large Water Body
【24h】

Overburden Failure Associated with Mining Coal Seams in Close Proximity in Ascending and Descending Sequences Under a Large Water Body

机译：大型水体下上升和下降顺序接近开采煤层的覆岩破坏

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We investigated differences of overburden failure induced by mining multiple seams in ascending and descending sequences under a large water body. A case study that involves mining in an ascending sequence was the Beizao coal mine, which is under the Bohai Sea, and one that involves mining in a descending sequence was the Cuizhuang coal mine, which is under Weishan Lake. Using numerical simulations with the same geological conditions as the in-situ measurements, the effects of different interburden thicknesses on mining were compared. The results showed that the ratios of the heights of water-conducting fractured and caving zones to the cutting height both increased as the interburden thickness was reduced. An ascending sequence is recommended where there is a thin interburden and thin bedrock, and where the mining seams obviously interact. The descending sequence is recommended where there is no apparent interaction between the seams. Both will produce a relatively small water-conducting fractured zone.
机译：我们调查了在大型水体下开采多个接缝的升序和降序导致的上覆破坏的差异。一个涉及升序开采的案例研究是位于渤海下面的北枣煤矿，一个涉及降序开采的案例研究是位于巍山湖下的翠庄煤矿。使用具有与原位测量相同的地质条件的数值模拟，比较了不同层间厚度对采矿的影响。结果表明，随着层间厚度的减小，导水裂隙和崩落带的高度与切削高度的比值均增加。如果岩层薄且基岩薄，并且煤层明显相互作用，则建议采用上升顺序。如果接缝之间没有明显的相互作用，则建议采用降序排列。两者都会产生一个相对较小的导水裂缝带。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号