| 泥质砂岩动弹模阻尼及能量耗散特性试验研究 |
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| 引用本文： | 杜瑞锋,裴向军,张晓超,贾俊,张祺.泥质砂岩动弹模阻尼及能量耗散特性试验研究[J].水文地质工程地质,2018,0(6):71-71. |
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| 作者姓名： | 杜瑞锋 裴向军 张晓超 贾俊 张祺 |
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| 作者单位： | 1.成都理工大学地质灾害防治与地质环境保护国家重点实验室，四川 成都610059；2.内蒙古建筑职业技术学院建筑工程学院，内蒙古 呼和浩特010070;3.国土资源部黄土地质灾害重点实验室/中国地质调查局西安地质调查中心，陕西 西安710054 |
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| 基金项目： | 中国地质调查局项目资助（吕梁山区城镇地质灾害调查，DD20160276） |
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| 摘 要： | 针对煤矿矿区受爆破地震波影响下泥质砂岩斜坡的稳定性问题，利用MTS 815试验机开展了波形为正弦波、频率1 Hz的岩石动三轴试验，对滞回圈应力—应变数据进行了准确分析，计算了泥质砂岩的动弹性模量及阻尼参数，以及在循环动力作用下单位体积能、单位弹性能、单位耗散能的演化规律。研究中发现耗散能与围压水平、动应力水平两者之间呈幂函数关系。对试验中出现的“突增或突减”现象进行了讨论和分析，初步归因于岩石具有蓄能的特性和动应力的“触发效应”、“累积效应”，并指出这与天然或爆破地震波能触发斜坡崩塌的机理是一致的。本试验旨在为受爆破地震波影响的泥质砂岩斜坡稳定性分析指明研究方向和提供基础性的研究指标。
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| 关 键 词： | 泥质砂岩 滞回圈 耗散能 触发效应 累积效应 |
| 收稿时间： | 2018-03-22 |
| 修稿时间： | 2018-05-03 |
An experimental study of the dynamic modulus,damping and energy dissipation characteristics of argillaceous mudstones |
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| DU Ruifeng,PEI Xiangjun,ZHANG Xiaochao,JIA Jun,ZHANG Qi.An experimental study of the dynamic modulus,damping and energy dissipation characteristics of argillaceous mudstones[J].Hydrogeology and Engineering Geology,2018,0(6):71-71. |
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| Authors: | DU Ruifeng PEI Xiangjun ZHANG Xiaochao JIA Jun ZHANG Qi |
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| Affiliation: | 1.State Key Laboratory of Geo-hazards Prevention and Geo-environment Protection，Chengdu University of Technology，Chengdu，Sichuan610059，China；2. Civil Engineer Department, Inner Mongolia Technical College of Construction, Hohhot，Inner Mongolia010070, China;3. Key Laboratory for Geo-hazards in Loess Area, MLR/Xi’an Center of Geological Survey, China Geological Survey, Xi’an, Shaanxi710054，China; |
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| Abstract: | To study the stability of the argillaceous sandstone slope subjected to blasting wave in coal mining areas, the dynamic tri-axial test is carried out using the MTS 815 equipment, in which a sinusoidal wave with a 1 Hz frequency is applied. The stress-strain data of hysteresis loops are precisely analyzed, and dynamic and damping parameters are calculated. The experiment reveals the evolution laws of volumetric energy, elastic energy and dissipated energy. The relationship between the volumetric dissipated energy and confining pressure or dynamic stress is a power function. The existing mutation is analyzed and discussed, which is attributed to energy storage of rocks, and “accumulation effect” and “triggered effect” of stress waves induced by the tri-axial test. Furthermore, it is consistent with the mechanism of seismic wave or blasting stress wave which can trigger slope collapse. The experiment is aimed to obtain direction and basic academic material for stability analysis of argillaceous sandstone slope subjected to blasting wave. |
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