【摘要】：料場土的研究，是水利工程中由來已久的問題，但前人的研究基本上局限于對同一種土質(zhì)的干密度、含水率、液塑限、顆粒級配、滲透系數(shù)等參數(shù)的研究上，而在工程實際中，土質(zhì)是多變的，單純的針對同一種土的規(guī)律探究意義不大。本文以峽江水利樞紐庫區(qū)工程24個標(biāo)段不同料場土的實驗參數(shù)及堤防壓實度檢測數(shù)據(jù)為基礎(chǔ)，進(jìn)行了數(shù)理統(tǒng)計及回歸分析，針對不同土質(zhì)，對料場土擊實、顆分、比重、液塑限、滲透五個實驗各參數(shù)之間相互關(guān)系的規(guī)律進(jìn)行探究并得出結(jié)論，，在施工繁忙季，可以通過這些規(guī)律大致估算一些耗時的實驗參數(shù)，以減小檢測實驗對施工進(jìn)度的影響，對指導(dǎo)工程施工具有重要意義。 本文研究的內(nèi)容及相關(guān)工作： 介紹了國內(nèi)外土質(zhì)的分類體系，總結(jié)了土質(zhì)分類的一些具體方法，如國內(nèi)的三角形組成分類原理、塑性圖分類法，美國的EPC分類方法。結(jié)合工程實際，對料場土用塑性圖分類法及EPC分類法進(jìn)行分類，比較分類結(jié)果后指出EPC分類法對于工程具有更好的適用性。 通過origin、MATLAB等數(shù)理軟件對料場土五個實驗各參數(shù)之間的線性關(guān)系及相關(guān)關(guān)系進(jìn)行分析論證。用遺傳算法神經(jīng)網(wǎng)絡(luò)系統(tǒng)對最大干密度進(jìn)行了預(yù)測及敏感性分析，指出液限對最大干密度的影響權(quán)重最大。引進(jìn)了四參數(shù)全壓實曲線方程，并確定了四個參數(shù)Sm、Wm、p、n與常規(guī)實驗中液限等參數(shù)之間的線性關(guān)系，從而確定了四參數(shù)曲線方程，并指出了該方程的優(yōu)勢性。 結(jié)合工程壓實度測量數(shù)據(jù)，分析了峽江水利樞紐庫區(qū)工程料場土的壓實特性，通過室內(nèi)實驗的方法確定了壓實度與回彈模量、含水率、干密度之間的關(guān)系，通過現(xiàn)場實驗的方法分析了碾壓遍數(shù)與壓實度之間的關(guān)系，并用模擬實驗的方法研究了降雨對堤防表層土體壓實度的影響。用理正軟件計算了9中不同壓實度組合情況下邊坡穩(wěn)定情況，研究了堤防壓實度對邊坡穩(wěn)定的影響。
[Abstract]:The study of the soil in the field is a long-standing problem in water conservancy projects, but the previous studies are basically confined to the study of the dry density, moisture content, liquid plastic limit, particle gradation, permeability coefficient and other parameters of the same soil, but in the engineering practice, Soil quality is changeable, and it is of little significance to explore the laws of the same soil. On the basis of the experimental parameters and the data of the compaction degree of the dike in 24 sections of the Xijiang Water Conservancy Project, this paper carries out mathematical statistics and regression analysis. According to the different soil quality, the soil compaction, particle fraction and specific gravity of the material yard are analyzed. In order to reduce the influence of the test on the construction schedule, the relationship between the parameters of the five experiments is studied and concluded. In the busy season of construction, some time-consuming experimental parameters can be estimated by these laws in order to reduce the influence of the testing experiment on the construction schedule. It is of great significance to guide the construction of engineering. This paper introduces the classification system of soil quality at home and abroad, and summarizes some concrete methods of soil quality classification, such as the principle of triangle composition classification in China, plastic map classification method and EPC classification method in America. According to the engineering practice, the plastic drawing classification and EPC classification are used to classify the soil in the field. After comparing the classification results, it is pointed out that the EPC classification method is more suitable for engineering. The linear relationship and correlation between the five experimental parameters of the material field soil were analyzed and demonstrated by origin,MATLAB and other mathematical software. The maximum dry density is predicted and the sensitivity is analyzed by using genetic algorithm neural network system. It is pointed out that the influence weight of liquid limit on maximum dry density is the largest. The four-parameter total compaction curve equation is introduced, and the linear relationship between the four parameters Sm,Wm,p,n and the liquid limit isoparameters in the conventional experiment is determined, and the four-parameter curve equation is determined, and the superiority of the equation is pointed out. Based on the compaction measurement data of the project, the compaction characteristics of the material yard soil in the reservoir area of the Xiajiang Water Conservancy Project are analyzed. The relationship between the compaction degree and the modulus of resilience, the moisture content and the dry density is determined by the method of laboratory experiments. The relationship between the number of rolling times and the degree of compaction is analyzed by means of field experiments, and the influence of rainfall on the compaction degree of the surface soil of embankment is studied by the method of simulation experiment. The influence of embankment compaction on slope stability is studied by using Lizheng software.
【學(xué)位授予單位】：南昌大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV632;TV221.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 蔣應(yīng)軍;李

本文編號：2226230