Investigations of groundwater bursting into coal mine seam floors from fault zones
Investigations of groundwater bursting into coal mine seam floors from fault zones
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DOI：
10.1016/j.ijrmms.2003.01.004
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发表时间：
2004-06-01
影响因子：
7.2
通讯作者：
Wu, X
中科院分区：
文献类型：
--
作者：
Wu, Q;Wang, M;Wu, X
本文介绍了煤矿煤层底板沿断裂带迟滞地下水突水的研究实例。除了对地应力进行现场测量外，还从案例研究现场的断裂带中采集了一些岩石样本，并对常规和特殊流变岩石力学特性进行了实验室测试。分析了不同参数对断裂带材料变形破坏的影响，进一步揭示了沿断裂带迟滞性地下水突水的机理。在案例研究中，考虑断层软弱带不同发育阶段和地下水破裂的不同情景以及不同的地下水压力，采用三维视觉弹塑性数值力学模型FLAC（3D）对每一种情景进行了模拟。通过实例研究，验证了岩石力学建模软件在断裂带迟滞性地下水突水研究中的适用性。讨论了迟滞性地下水突水地质灾害调查中的几个问题，提出了迟滞性地下水突水地质灾害调查与控制的一般结构化方法。(C) 2004 Elsevier Ltd.版权所有。
This paper presents a case study of investigations into retarded groundwater bursting along the fault zones in the seam floors in coal mines. In addition to in situ measurements of ground stresses, a number of rock samples from the fault zones at the site of the case study were taken, and laboratory tests were performed for conventional and special rheological rock mechanics properties. The effects of different parameters on deformation and failure of the fault zone materials were analyzed, and the mechanism of retarded groundwater bursting along fault zones was further revealed. In the case study, different scenarios accounting for the different development phases of the fault weakness zone and groundwater bursting as well as different groundwater pressures were considered, and each of them was simulated using the 3D visual elastic-plastic numerical mechanics model FLAC(3D) (Fast Lagrangian Analysis of Continua in 3 Dimensions). Through the case study, the applicability of rock mechanics modeling software for studying retarded groundwater bursting along a fault zone was examined. Several issues are discussed regarding the investigations of retarded groundwater bursting and a general structured approach to investigate and control this geological hazardous event is presented. (C) 2004 Elsevier Ltd. All rights reserved.