| 中厚软岩板静载弯曲时中面特性的时间相关分析 |
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| 引用本文： | 张晓春.中厚软岩板静载弯曲时中面特性的时间相关分析[J].岩石力学与工程学报,2004,23(9):1424-1427. |
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| 作者姓名： | 张晓春 |
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| 作者单位： | 东南大学交通学院,南京,210096 |
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| 摘 要： | 上覆岩层对采动岩体活动全部或局部起决定性作用，上覆岩层运动是一个复杂的时空过程，具有时效性。采用中厚软岩板，基于岩体流变的Burger模型，对中厚软岩板静载弯曲时中面特性进行了时间相关分析。结果表明，中厚软岩板中面位置在相当长的时间段内是随时间变化的，它受岩体的刚度、粘滞特性等因素的影响。对于采动岩体而言，初始阶段的支护是保持中厚软岩板稳定的关键。
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| 关 键 词： | 岩石力学 中厚软岩板 中面特性 时间相关性 采动岩体 |
| 文章编号： | 1000-6915(2004)09-1424-04 |
| 收稿时间： | 2003-3-3 |
| 修稿时间： | 2003-5-15 |
TIME-DEPENDENCY OF NEUTRAL SURFACE FEATURE OF MID-THICK SOFT ROCK PLATE UNDER STATIC LOAD BENDING |
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| Zhang Xiaochun.TIME-DEPENDENCY OF NEUTRAL SURFACE FEATURE OF MID-THICK SOFT ROCK PLATE UNDER STATIC LOAD BENDING[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(9):1424-1427. |
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| Authors: | Zhang Xiaochun |
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| Abstract: | In the local or global movement of rock mass under mining,overlying strata play a key role. The overlying strata movement is a complicated space-time process and has time-dependent feature. Based on Burger model,the time-dependent feature of neutral surface of mid-thick soft rock plate under static load bending is studied by mid-thick plate model. The results show that the location of neutral surface of mid-thick soft rock plate will change with time in a long period and is affected by the stiffness and viscometric parameter of rock mass. For rock mass under mining,the support of surrounding rock mass in initial stage is critical to the stability of surrounding rock mass. |
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| Keywords: | rock mechanics mid-thick soft rock plate neutral surface feature time-dependency rock mass under mining |
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