降雨与库水作用是滑坡地质灾害发生的重要影响因素，为了对降雨及库水作用对滑坡渗流及稳定性影响规律进行探索研究，特自主研究构建了小型滑坡模型试验系统平台，该系统主要由人工降雨系统、模型试验框架、试验数据采集系统、非接触式位移测量系统及各物理量量测传感器构成。并以孙家庄滑坡为例，运用相似理论建立相似比为1∶200的滑坡物理模型，采用人工降雨系统进行不同强度降雨试验，提供了可行的操作平台。研究了不同降雨强度下滑坡体内渗流变化规律。
Abstract
Rainfall and reservoir water are important factors causing landslides. In order to study the regularity of rainfall and reservoir water affecting the seepage and stability of slope, we developed and built a small system platform for landslide model test. The system is mainly composed of artificial rainfall subsystem, model test framework, test data acquisition subsystem, non-contact displacement measurement subsystem and physical measurement sensors. Taking the landslide at Sunjiazhuang as an example, we established a landslide physical model with similar ratio of 1∶200, and carried out rainfall intensity tests through artificial rainfall system. The regularity of seepage variation in landslide body under different rainfall intensities were obtained, which proved the feasibility of this system.
关键词
滑坡 /
地质灾害 /
模型试验系统 /
降雨试验 /
渗流规律
Key words
landslide /
geological disaster /
model test system /
rainfall test /
seepage regularity
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基金
国家自然科学基金重点项目(50839004)；三峡大学三峡库区三期地质灾害防治重大科学研究项目(SXKY3-2-1)；三峡大学优秀硕士学位论文培优基金(2013PY018)；三峡大学土木与建筑学院优秀硕士论文培优基金(PY201306)
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