• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Coal Mine Safety and Health Report of Investigation; Underground Coal Mine Inundation of Water Resulting in Entrapment of Miners, May 9, 2009. Alpha Natural Resources, Cobra Natural Resources, LLC., Mountaineer Alma A. Mine, Wharncliffe, Mingo County, West Virgina. ID No. 46-08730
【24h】

Coal Mine Safety and Health Report of Investigation; Underground Coal Mine Inundation of Water Resulting in Entrapment of Miners, May 9, 2009. Alpha Natural Resources, Cobra Natural Resources, LLC., Mountaineer Alma A. Mine, Wharncliffe, Mingo County, West Virgina. ID No. 46-08730

机译：煤矿安全卫生调查报告; 2009年5月9日，地下煤矿淹没水资源导致矿工陷入困境.alpha Natural Resources，Cobra Natural Resources，LLC。，mountaineer alma a. mine，Wharncliffe，mingo County，West Virgina。证号46-08730

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The accident occurred because storm runoff water entered the mine portals after being diverted when culverts underneath the portals were blocked by debris, mud, and rock, caused by scouring and erosion from a mud slide. The slide prevented water flow through the culverts, which caused the water to back up and enter the mine. Another factor that contributed to the accident was the inability of the mines system of diversion ditches to handle the storm water flow, as designed. The diversion ditches were not maintained or kept cleared of sediment, rocks, or vegetation, such as trees and underbrush. This allowed the runoff water to overtop the diversion ditches, flooding surface areas above the mine portals. The mines escapeways were blocked when the surface water entered the mine, preventing seven miners from exiting the mine and entrapping them for approximately 24 hours.

著录项

相似文献

  • 外文文献
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