Scholarlink

<p>In order to explore the risk of coal-and-gas outbursts in hydraulic tunnels and their prevention and control measures, the No. 6 Middle Coal Seam, at the inlet section heading face of Shuidaqiao Tunnel in Guizhou Province, China, was taken as the research background. Using the testing data, the No. 6 Middle Coal Seam was determined to have a high risk of coal-and-gas outburst by both the single-index analysis method and the comprehensive <i>D</i> and <i>K</i>&#xa0;index analysis method. An integrated outburst precautionary measure of “advanced geological prediction&#xa0;+&#xa0;grouting cut-off wall + gas pre-drainage&#xa0;+&#xa0;grouting sealing&#xa0;+&#xa0;effectiveness verification” in a segmented and multi-cycle manner was designed and implemented. The on-site gas inspection results show that no further occurrences of gas over-limit or outburst phenomena have been observed, indicating that the above coal-and-gas outburst precautionary measure is scientific and effective. The research results can provide references for risk analysis of coal-and-gas outburst and its prevention and control in similar hydraulic tunnels passing through coal seams.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Research on risk analysis and precautionary measures of coal-and-gas outbursts in hydraulic tunnels

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月20日

查看全文
  • Hailong Dong,
  • Zhengxin Zhang,
  • Zuotai Zhang,
  • Hanming Yang,
  • Wei Jing,
  • Zheng Huang,
  • Zuodong Song

摘要

In order to explore the risk of coal-and-gas outbursts in hydraulic tunnels and their prevention and control measures, the No. 6 Middle Coal Seam, at the inlet section heading face of Shuidaqiao Tunnel in Guizhou Province, China, was taken as the research background. Using the testing data, the No. 6 Middle Coal Seam was determined to have a high risk of coal-and-gas outburst by both the single-index analysis method and the comprehensive D and K index analysis method. An integrated outburst precautionary measure of “advanced geological prediction + grouting cut-off wall + gas pre-drainage + grouting sealing + effectiveness verification” in a segmented and multi-cycle manner was designed and implemented. The on-site gas inspection results show that no further occurrences of gas over-limit or outburst phenomena have been observed, indicating that the above coal-and-gas outburst precautionary measure is scientific and effective. The research results can provide references for risk analysis of coal-and-gas outburst and its prevention and control in similar hydraulic tunnels passing through coal seams.