• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Current Longwall Ventilation Problems and Implications for Thick SEAM Longwalls. Final Technical Report
【24h】

Current Longwall Ventilation Problems and Implications for Thick SEAM Longwalls. Final Technical Report

机译：当前长壁通风问题及对厚煤层长壁的影响。最终技术报告

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

摘要

The objective of this investigation was to identify, analyze and suggest solutions to ventilation problems of the following mining systems proposed for use in western thick seams; multiple lift longwall; single pass longwall with face height in the range of 12 to 19 feet; longwall sublevel caving. To reach this objective, background information on the regulations and ventilation practices relevant to the three methods was reviewed. This was followed by an identification of ventilation problems including the sources and quantities of methane emissions, respirable coal dust, self ignition and self heating. The problems were then analyzed to determine the probability of occurrence, the cause of the problem, and its consequences. Having analyzed these problems, solutions were described to the problems. The major finding of this effort was that, while certain ventilation difficulties can be isolated peculiar to these three moethods, in general, seam specific conditions have a larger role in determining the success of ventilation than does the method used. The major difficulties to be faced by these novel methods are the same as those to be faced by conventional longwalls. Research efforts should proceed on that basis. (ERA citation 05:025240)

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