• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in civil engineering >Comparative Analysis of Roadway Reinforcement Effects Based on Fluid-Solid Coupling in the Fractured Zone of Water-Rich Fault
【24h】

Comparative Analysis of Roadway Reinforcement Effects Based on Fluid-Solid Coupling in the Fractured Zone of Water-Rich Fault

机译：富水断层破碎带中基于流固耦合的巷道加固效果对比分析

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

Water inrush is a common geological disaster during the roadway excavation process in the broken zone of water-rich faults. In this paper, the 15107 mining roadway built by Yuxing coal mine in such a fault zone was used as a case study to determine the water content of the surrounding rocks and a fault zone using the transient electromagnetic method (TEM). Also, the mechanics characteristics of such rocks in both saturated and unsaturated states were analyzed, a computational model for fluid-solid coupling in the water-rich fault fracture zone was established, and the permeability coefficient of the rocks under both shield support and bolt-grouting support was compared, along with analyzing the changes in pore pressure, fissure water velocity, and characteristics of deformation in the surrounding rocks. The numerical simulation results show that the fault range has an influence of about 20 m, which causes the forms of permeability coefficient to change like a hump. The permeability coefficient in the fractured zone is the largest, and the mutation rate at the fault plane is faster. Bolting not only reduces the permeability coefficient of the surrounding rock that is 1/10 of the beam support but also prevents the roof fissure water inrushing the roadway and the surrounding rock of the floor, while also causing the pore-water pressure to decrease, even reduce to zero, in front of the working face and floor. The flow velocity of the fissure water can be decreased by bolting, which can effectively control the deformation of the surrounding rock by 38.7%similar to 65% compared with the shield support. The practice results show that this method can effectively recover the cracks surrounding the mining roadway and stop gushing water. Concurrently, it successfully controls deformation of the surrounding rocks in the fault zone, thus ensuring stability of the roadway and facilitating safer mining production.
机译：在富水断层破碎带的巷道开挖过程中，突水是一种常见的地质灾害。本文以玉星煤矿在该断层带修建的15107巷道为例，采用瞬变电磁法（TEM）确定围岩和断层带的含水量。此外，分析了这种岩石在饱和和非饱和状态下的力学特性，建立了富水断层断裂带中流固耦合的计算模型，并在盾构支护和锚杆支护下对岩石的渗透系数进行了计算。比较了注浆支架，并分析了孔隙压力，裂隙水速度和围岩变形特征的变化。数值模拟结果表明，断层范围的影响约为20 m，这导致渗透系数的形式像驼峰一样变化。断裂带的渗透系数最大，断裂面的突变率更快。锚固不仅降低了围岩的渗透系数，其为梁支撑的1/10，而且还防止了屋顶裂隙水冲入巷道和地板的围岩，同时还导致孔隙水压力降低，甚至在工作面和地板前面减少到零。锚固可降低裂隙水的流速，与盾构支架相比，可有效控制围岩变形的38.7％，相当于控制65％。实践结果表明，该方法可以有效地回采巷道周围的裂缝，防止涌水。同时，它成功地控制了断层带中围岩的变形，从而确保了巷道的稳定性并促进了更安全的采矿生产。

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