| 摘要: |
| 针对以系统裂隙性质对含裂隙基坑边坡渗流特性的影响，利用Geo-studio软件对不同裂隙特性含裂隙边坡的渗流特性影响进行数值模拟，结果表明:降雨条件下含裂隙边坡裂隙面孔压及体积含水率上升幅度及范围要大于完整边坡，且湿润锋进展得更加彻底；不同深度下，裂隙的深度越深，裂隙内部的高孔压及体积含水率区越大，同时最大孔压也越大；裂隙位于边坡上部及中部时，裂隙面孔压呈现线性增大的规律，在裂隙高程以下，孔压则逐渐降低，降雨对下部裂隙内部的孔压变化无明显影响，孔压呈现线性增大趋势；裂隙角度与土体内部含水量与孔压上升速率呈负相关。 |
| 关键词: 基坑边坡稳定 裂隙边坡 渗流特性 数值模拟 Geo-studio 降雨 |
| DOI： |
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| Numerical Simulation Study on the Influence of Fracture Properties on Seepage Characteristics of Soil Slope with Fissures |
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ZHU Yu-jia
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Department of Engineering Management, Anhui Audit Vocational College, Hefei 230001, China
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| Abstract: |
| In view of the fact that few previous studies have systematically studied the influence of fracture properties on the seepage characteristics of the slope with cracks, based on Geo studio software, the numerical simulation is conducted on the influence of different fracture properties on the seepage characteristics of the soil slope with fissures. The simulation results show that under rainfall condition, the increase range of the pore pressure of the crack surface and water containing rate of the soil slope with fissures is larger than that of complete soil slope, and the progress of its wetting front is more thorough. Under different depths, the deeper the depth of fissures is, the larger the high pore pressure and the volume water containing rate area inside the fissure are, the larger the maximum pore pressure is. When the cracks are located at the upper place and the middle place of the soil slope, the pore pressure of the fissure surface shows linear increase law, below the altitude of the fissures, the pore pressure is gradually declining, there is no significant effect of the rainfall on the pore pressure change of the lower place inside the fissures, however, the pore pressure demonstrates linear increase trend. There is negative correlation between crack angle and water volume in the soil and the increase rate of pore pressure. |
| Key words: slope stability of foundation ditch crack slope seepage characteristics numerical simulation Geo studio rainfall |
