摘要
虹吸排水是一种免动力并能够实时排除坡体深部地下水的有效措施,通过合理布置虹吸排水孔群可以显著降低地下水位并较大程度地增强边坡的稳定性。将井群孔降水与倾斜排水的排水效率相结合,引入排水拦截比λ,给出排水拦截比与排水孔水平间距之间的关系,可以得到不同排水孔布设间距对虹吸排水效果的影响。在实际计算中可以根据工程要求确定拦截比,并求出相应的井孔间距,为实际工程的设计提供相关依据。通过物理模拟试验探究排水孔在地下水位以下部分孔长对排水效果的影响,表明地下水位以下部分孔长与排水拦截比呈线性关系。
Siphon drainage is a power free and effective measure in real-time draining away groundwater in the slope depth. It can significantly lower underground water level and largely increase the stability of slope through reasona- ble arranging siphon drainage hole group. To combine the group of holes precipitation and inclined hole ficiency, introduce the drainage drainage ef- interception ratio λ, and give a relationship formula between the drainage intercep- tion ratio and drainage hole horizontal spacing, may get the influence of different drainage hole layout spacing on the siphon drainage effect. In practical calculation, it is possible to determine the drainage interception ratio ac- cording to the requirement of engineering, find out the corresponding holes spacing, provide design basis for actual engineering. The influence of the drainage holes length in the underground water level on the drainage effect was explored through physical simulation test and result shows that they are linear relation.
出处
《自然灾害学报》
CSCD
北大核心
2017年第2期40-46,共7页
Journal of Natural Disasters
基金
"十二五"国家科技支撑计划项目(2012BAK10B06)资助~~
关键词
虹吸排水
井孔间距
拦截比
浸润曲线
物理模拟
siphon drainage
drainage hole spacing
interception ratio
phreatic curve
physical analogue
