| 断层破碎带隧道突水突泥灾变演化模型试验研究 |
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| 引用本文： | 王德明,张庆松,张 霄,王 凯,谭英华.断层破碎带隧道突水突泥灾变演化模型试验研究[J].岩土力学,2016,37(10):2851-2860. |
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| 作者姓名： | 王德明 张庆松 张 霄 王 凯 谭英华 |
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| 作者单位： | 山东大学 岩土与结构工程研究中心，山东 济南 250000 |
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| 基金项目： | 国家重点研发计划项目(No. 2016YFC0801600)；国家自然科学基金(No. 41272385，No. 51139004)；博导基金(No. 20130131110032)。 |
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| 摘 要： | 为研究断层破碎带隧道开挖扰动作用下突水、突泥灾变演化过程，建立了三维地质模型试验系统，以江西永莲隧道F2断层突水、突泥灾害为例，通过大量的材料配比及物理力学性能参数测试，研制出适用于流-固耦合模型试验的新型断层及正常围岩相似材料，对隧道突水、突泥灾害进行研究。试验结果有效地揭示了无支护条件下断层破碎带隧道的洞周位移、渗流压力、应力-应变以及突出物质量等特征参数对时效性的响应规律。随着时间的增长，渗流压力整体呈上升趋势，越靠近开挖面其波动范围及幅度越大；突出物质量在发生突水、突泥灾害前出现短时减小后迅速增加；洞周围岩拱顶以竖向位移为主，而拱腰以水平位移为主；在相同相应力状态下，拱腰位置应变比拱顶位置大。将试验灾变特征与现场实际演化过程进行对比分析，两者结果较为吻合。该系统可广泛应用于其他地下工程的模型试验研究，其研究方法及结果对类似工程研究具有一定的指导和借鉴意义。
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| 关 键 词： | 断层破碎带 突水突泥 灾变演化 模型试验 |
| 收稿时间： | 2015-11-19 |
Model experiment on inrush of water and mud and catastrophic evolution in a fault fracture zone tunnel |
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| WANG De-ming,ZHANG Qing-song,ZHANG Xiao,WANG Kai,TAN Ying-hua.Model experiment on inrush of water and mud and catastrophic evolution in a fault fracture zone tunnel[J].Rock and Soil Mechanics,2016,37(10):2851-2860. |
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| Authors: | WANG De-ming ZHANG Qing-song ZHANG Xiao WANG Kai TAN Ying-hua |
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| Institution: | Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, Shandong 250000, China |
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| Abstract: | To study the catastrophic process of the inrush of water and mud in a fault fracture zone tunnel, a 3-D geologic model test system is established. Based on the water and mud inrush catastrophe of the F2 fault zone in the Yonglian tunnel in Jiangxi Province, a new similar material of fault and surrounding rock is developed by examining a large number of different material ratios and the physical and mechanical parameters of the materials. The temporal effects of displacement, seepage pressure, stress-strain and mass of gushed particles around the tunnel are analyzed. The seepage pressure increases with time, and the smaller the distance between excavation face and monitoring interface, the greater the fluctuation range. Before the inrush of water and mud, the mass of gushed particles decreases temporarily and then increases rapidly. The displacement of surrounding rock vault is mainly in vertical direction, and the displacement of hance is mainly in horizontal direction. At the same stress state, the strain of hance is larger than that of the vault. Comparative analysis is made between the catastrophe characteristics of test and the process of field catastrophe evolution, showing consistent results. |
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| Keywords: | fault fracture zone inrush of water and mud catastrophe evolution model test |
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