边坡仰斜式排水孔施工关键技术分析  

Analysis on Key Construction Details of a Slope with the Inclined Drainage Hole

作　　者：于锦 杨钊[1] 熊齐欢 仝德富 张子平 YU Jin;YANG Zhao;XIONG Qihuan;TONG Defu;ZHANG Ziping(CCCC Second Harbor Engineering Co.Ltd.,Wuhan 430000;Faculty of Engineering,China University of Geoscience,Wuhan 430074)

机构地区：[1]中交第二航务工程局有限公司,武汉430000 [2]中国地质大学工程学院(武汉),武汉430074

出　　处：《土工基础》2024年第3期404-408,414,共6页Soil Engineering and Foundation

基　　金：国家自然科学基金项目资助(41672260);云南省科技创新示范项目资助(云交科教[2019]15号);中央高校基础研究基金,中国地质大学(武汉)(CUGDCJJ202234)。

摘　　要：仰斜式排水孔是疏排地下水的经济、有效措施,但在实际工程中却常收效甚微,不出水、淤堵快的现象十分普遍。为进一步促进解决此类问题,以某高速公路富水边坡仰斜式排水孔实施例为背景,详细分析论述了仰斜式排水孔设计、施工中的技术要点及原理,阐释了参数设计、排水孔施工要求,最后从钻孔参数、空间位置、实际出水效果对比了已实施的两批次排水孔。结果表明,仰斜式排水孔的孔长及空间位置是影响排水效果的关键因素。因此,设计钻孔参数时,应结合地质勘察数据,将孔位布设于坡脚等低高程位置,并确保钻孔伸至地下水位以下或含水层中。The inclined drain hole is an economical and effective measure to drain the groundwater from slopes.However,the effect is often poor,and the phenomena of no groundwater flowing through,and fast siltation is very common.To further solve these issues,this paper analyzes and discusses the technical methods and principles in the design and construction of the inclined drainage holes in detail based on a rich waterside slope of an expressway.Otherwise,it also explained the design parameters,drainage hole construction requirements.Finally,the two batches of drainage holes were compared in terms of borehole parameters,spatial locations and actual drainage effect.The results show that the hole length and the spatial position of inclined drainage holes are key factors that influencing the drainage effect.Therefore,when designing the drlling parameters,the bore hole position should be arranged in the low elevation position such as the slope toe in combination with the geological investigation data,and the drilling should be extended below the groundwater level or into the aquifer.

关 键 词：仰斜式排水孔 参数设计 孔长 空间位置 

分 类 号：TU476[建筑科学—结构工程]