• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Development of a Deep-Penetrating Borehole Geophysical Technique for Predicting Hazards Ahead of Coal Mining. Phase 2
【24h】

Development of a Deep-Penetrating Borehole Geophysical Technique for Predicting Hazards Ahead of Coal Mining. Phase 2

机译：深孔钻孔地球物理技术在煤矿开采前的预测中的应用。阶段2

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 research was to develop a deep-penetrating borehole geophysical technique for predicting hazards ahead of coal mining. Various methods were evaluated to determine their potential for detecting geological and work-related hazardous conditions and their practicability of implementation. The study indicated that a borehole pulse electromagnetic reflectometer (radar) had the most promise as a viable field technique. Based on the results, a borehole monostatic baseband pulse radar was designed, developed, and tested in prototype form. Field tests of the prototype borehole radar probe showed that underground features were detectable by the technique. Follow-on developments included the design and construction of an engineering model radar that would overcome the problems associated with the prototype model and also provide enhanced detection capabilities. These developments lead to an advanced design borehole radar system providing a directional antenna in a 3-in-diam probe. The information reported herein relates to the theory of operation, operating instructions, and maintenance procedures for the advanced design engineering model radar system.

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