本文選題：土-水特征曲線　切入點：降雨入滲　出處：《浙江海洋大學》2017年碩士論文　論文類型：學位論文

【摘要】：我國南方地區(qū)處于亞熱帶和熱帶季風氣候,具有雨季長,雨量大等氣候特點,降雨是導致滑坡自然災害的最大誘因,雨水的入滲會增加邊坡土體重度,造成巖土體軟化,弱化其抗剪強度,增加邊坡失穩(wěn)的風險。邊坡排水措施是邊坡穩(wěn)定性的保障,而鑒于目前邊坡排水措施多種多樣卻又存在各種缺陷和限制的窘況,研究更具有實用性和高效性的邊坡排水措施就成了當前急需解決的重要工程問題。這一問題也是眾多巖土專家學者們一直以來關注的熱點。為了對這一問題進行研究,本文做了以下幾個方面的工作:首先以浙江省衢州市某高速公路邊坡項目為研究對象,進行實地考察并采集工程現場土樣,通過室內張力計與土壤含水量測定儀聯合試驗獲取了土樣的土-水特征曲線,并運用ChildsCollis-Geroge數學模型計算得出土樣滲透系數函數曲線,分析了土樣的特性。接著在獲取土樣參數的基礎上,基于飽和-非飽和土理論,運用Geo-Studio有限元軟件建立邊坡模型,在所建邊坡模型內部設置虹吸邊坡排水系統(tǒng),分析其提高邊坡穩(wěn)定性的效果,并就虹吸點布設位置以及虹吸點數量對提升邊坡穩(wěn)定性的效果影響進行了研究,結果發(fā)現虹吸邊坡排水系統(tǒng)對邊坡穩(wěn)定性的提高具有明顯效果,并且虹吸點位置無論在水平還是豎直方向上設置,其排水效果與虹吸點設置深度并非呈現出線性關系,且可確定最佳位置;相對于單個虹吸點來說,虹吸點數量越多排水效果越好,但是,虹吸點數量超過一定值后,數量的改變對排水效果影響作用會下降。最后結合實際邊坡工程介紹了虹吸邊坡排水系統(tǒng)的設計方案和施工流程,用實際工程效果有力的證明了虹吸邊坡排水系統(tǒng)的實用性和高效性,并對工程應用提出了實用性的建議。
[Abstract]:Southern China is in the subtropical and tropical monsoon climate, with the characteristics of long rainy season, heavy rainfall and so on. Rainfall is the biggest inducement of landslide natural disasters. The infiltration of Rain Water will increase the severity of slope soil and cause the softening of rock and soil. Weakening its shear strength and increasing the risk of slope instability. Slope drainage measures are the guarantee of slope stability, but in view of the variety of slope drainage measures, there are various defects and limitations. The study of more practical and efficient slope drainage measures has become an important engineering problem that needs to be solved at present. This problem is also a hot topic that many geotechnical experts and scholars have been paying close attention to all along. In order to study this problem, This paper has done the following work: firstly, taking a highway slope project in Quzhou City, Zhejiang Province as the research object, the field investigation is carried out and the soil samples are collected on the spot. The soil-water characteristic curve of the soil sample was obtained by using the laboratory tensometer and the soil moisture content tester, and the permeability coefficient function curve of the soil sample was calculated by using the ChildsCollis-Geroge mathematical model. Based on the theory of saturated-unsaturated soil, the slope model is established by using Geo-Studio finite element software, and the siphon slope drainage system is set up inside the model. The effect of improving slope stability is analyzed, and the effect of siphon location and number of siphon points on slope stability is studied. The results show that siphon slope drainage system has obvious effect on slope stability improvement. And the siphon point position is not linear with the siphon point setting depth, regardless of the horizontal or vertical position, and the best position can be determined, compared with the single siphon point, The more the number of siphon points, the better the drainage effect. However, when the number of siphon points exceeds a certain value, The effect of quantity change on drainage effect will decrease. Finally, the design scheme and construction process of siphon slope drainage system are introduced in combination with actual slope engineering. The practicability and efficiency of siphon slope drainage system are proved by the practical engineering effect, and some practical suggestions for engineering application are put forward.
【學位授予單位】：浙江海洋大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U416.14

【參考文獻】

相關期刊論文 前10條

1 王婷靜;周斌;賴友兵;;公路邊坡虹吸排水系統(tǒng)建設研究[J];公路與汽運;2016年06期

2 田建林;顧耀民;;富水隧洞排水設計及效果分析[J];水利水電工程設計;2016年02期

3 王偉興;何文勇;高楊;;基于Geo-Studio和Flac 2D的邊坡流固耦合作用分析[J];公路工程;2016年02期

4 林燦陽;;排水隧洞在大型滑坡治理工程中的應用[J];鐵道建筑技術;2015年10期

5 王曉峰;時紅蓮;唐志政;牛超穎;;基于統(tǒng)計模型的非飽和土滲透系數函數研究[J];長江科學院院報;2015年01期

6 張世華;孫紅月;熊曉亮;張文君;;基于matlab的邊坡虹吸排水滲流場分析[J];公路工程;2014年05期

7 陳正漢;;非飽和土與特殊土力學的基本理論研究[J];巖土工程學報;2014年02期

8 孫紅月;熊曉亮;尚岳全;蔡岳良;;邊坡虹吸排水管內空氣積累原因及應對措施[J];吉林大學學報(地球科學版);2014年01期

9 任姍姍;尚岳全;何婷婷;蔡岳良;;邊坡虹吸排水數值模擬方法及應用[J];巖石力學與工程學報;2013年10期

10 葉冬冬;張勝勇;楊進新;王雷;魏陸宏;;水位驟降條件下密集逆止式排水孔對防滲邊坡抗滑穩(wěn)定的影響研究[J];中國農村水利水電;2013年09期

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