• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arabian journal of geosciences >Deep-hole water injection technology of strong impact tendency coal seam-a case study in Tangkou coal mine
【24h】

Deep-hole water injection technology of strong impact tendency coal seam-a case study in Tangkou coal mine

机译：强烈冲击趋势煤层的深孔注水技术 - 唐沟煤矿案例研究

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

The implementation of coal-seam water injection can change the physical and mechanical properties of coal, can improve the coal storage limit, prevent and control rock burst, prevent coal and gas outburst, and reduce dust concentration in underground operations. However, there are still many shortcomings such as the poor sealing effect and the lack of coal seam permeability. In order to study coal softening through water injection and its effect of reducing the coal's impact tendency, we examine the impact tendency, coal seam injection, water injection additive, water injection hole sealing, and coal seam stress-relief effect of coal seam on LW5304 experimentally and through engineering application. The results show that this method can be used to reduce the coal's impact tendency, if the samples are soaked. Triton X-100 additive can effectively reduce the polarity of water and the surface tension, while improving the coupling effect of water and coal and the wettability of coal. The "pure polyurethane + cement slurry + cement mortar" sealing process can be used to avoid water injection leaking. The water content of LW5304 coal seam is 3.2 similar to 4.2% after water injection, and the average increase of moisture content is 1 similar to 2.5%. In addition, the number of coal-stress early warning is reduced, and micro-seismic monitoring shows that the average energy is reduced as well. Therefore, water injection in coal seam is considered a good method for relieving stress.
机译：煤层注水的实施可以改变煤的物理和力学性能，可以改善煤炭储存极限，预防和控制岩爆，防止煤气突出，并减少地下操作中的粉尘浓度。然而，仍然存在许多缺点，例如密封效果差和缺乏煤层渗透性。为了通过水注射研究煤软化及其降低煤炭冲击趋势的影响，我们研究了LW5304煤层煤层的冲击趋势，煤层注射，注水添加剂，水注入孔密封，水注入孔密封和煤层应力消除作用通过实验和通过工程应用。结果表明，如果样品浸泡，这种方法可用于降低煤的冲击趋势。 Triton X-100添加剂可以有效地降低水和表面张力的极性，同时提高了水和煤的耦合效果以及煤的润湿性。 “纯聚氨酯+水泥浆料+水泥砂浆”密封工艺可用于避免注水泄漏。水注射后LW5304煤层的含水量与4.2％相似，水分含量的平均增加与2.5％相似。此外，减少了煤胁迫预警的数量，微观地震监测表明平均能量也降低。因此，煤层中的水注入被认为是一种缓解压力的良好方法。

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