本文關(guān)鍵詞： 邊坡穩(wěn)定性分析 抗滑樁 極限平衡計算 土拱效應(yīng) 數(shù)值模擬　出處：《昆明理工大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著我國人口的高速增長和城鎮(zhèn)建設(shè)的飛速發(fā)展,作為不可再生資源的土地資源越來越難以滿足人們對生活生產(chǎn)的需求。如何在防止滑坡災(zāi)害的基礎(chǔ)上充分利用有限的土地資源成為現(xiàn)代社會不可忽視的現(xiàn)實問題,而抗滑樁本身具有的抗滑能力強、適用范圍廣、施工安全簡便、速度快、工程量小、投資少、不會進一步惡化滑坡環(huán)境且能有效核實地質(zhì)條件并及時調(diào)整設(shè)計方案等優(yōu)點使其越來越受到巖土工程界的廣泛關(guān)注。 本論文以云南華聯(lián)鋅銦公司曼家寨采場粗碎站邊坡穩(wěn)定性及支護措施研究課題為背景,結(jié)合前人在邊坡工程中所得的研究成果,列舉了一些人們在研究邊坡工程過程中常用到的一些邊坡穩(wěn)定性分析方法以及抗滑樁支護加固邊坡和土拱理論的研究現(xiàn)狀。在論文中,運用了邊坡穩(wěn)定性分析中的極限平衡分析法對研究對象進行穩(wěn)定性評價并根據(jù)計算結(jié)果提出了具體的邊坡加固治理措施。在探討抗滑樁設(shè)計參數(shù)對抗滑樁土拱效應(yīng)的影響時選用了數(shù)值模擬方法(FLAC3D法)。 本論文的主要內(nèi)容可總結(jié)為以下四個方面： 1、簡單介紹了邊坡工程中主要邊坡穩(wěn)定分析方法的發(fā)展史以及一些國內(nèi)外研究現(xiàn)狀,抗滑樁支護研究的歷史、現(xiàn)狀和存在的問題以及關(guān)于土拱理論的一些研究現(xiàn)狀。 2、介紹了該論文研究課題的工程背景及主要地質(zhì)條件,包括工程地質(zhì)條件、氣象及水文地質(zhì)條件、不良地質(zhì)作用及地震效應(yīng)。同時詳細介紹了該邊坡的工程概況。 3、介紹了樁土相互作用機理—土拱效應(yīng),通過根據(jù)邊坡實際情況建立的FLAC3D數(shù)值分析模型,分析研究抗滑樁加固邊坡時改變其樁間距和樁截面尺寸對抗滑樁土拱效應(yīng)產(chǎn)生的影響,通過對比發(fā)現(xiàn)了當(dāng)改變這兩方面參數(shù)時抗滑樁支護效果隨之發(fā)生的一系列改變并據(jù)此總結(jié)出變化規(guī)律,得到了對實際工程有益的結(jié)論。 4、通過選用理正軟件進行邊坡的極限平衡計算,論證了對邊坡進行支護加固的必要性,同時確定抗滑樁作為支護手段。通過試算確定了抗滑樁的位置,樁長以及樁的截面尺寸,之后在土拱效應(yīng)的基礎(chǔ)上得出了抗滑樁最大樁間距的計算公式。
[Abstract]:With the rapid growth of population and the rapid development of urban construction, Land resources, as non-renewable resources, are becoming more and more difficult to meet the needs of daily life. How to make full use of limited land resources on the basis of landslide prevention has become a realistic problem that can not be ignored in modern society. However, the anti-slide pile has the advantages of strong anti-slide ability, wide range of application, simple and safe construction, high speed, small amount of engineering and less investment. The advantages of not further deterioration of landslide environment and effective verification of geological conditions and timely adjustment of design plan make it more and more concerned by geotechnical engineering circles. This paper takes the research subject of slope stability and supporting measures of Manjiazhai stope of Yunnan Hualian Zinc-indium Company as the background, combined with the research results obtained by predecessors in slope engineering. This paper enumerates some methods of slope stability analysis that are often used in the research of slope engineering, as well as the research status of anti-slide pile supporting and strengthening slope and soil arch theory. The limit equilibrium analysis method in slope stability analysis is used to evaluate the stability of the research object. According to the calculation results, concrete measures of slope reinforcement and treatment are put forward. The design parameters of anti-slide pile are discussed to resist the soil arch effect of slide pile. The FLAC3D method is used to simulate the effect of the method. The main contents of this paper can be summarized as follows:. 1. The development history of main slope stability analysis methods in slope engineering, the research status at home and abroad, the history, status quo and existing problems of anti-slide pile support, and the research status of soil arch theory are briefly introduced. 2. The engineering background and main geological conditions, including engineering geological conditions, meteorological and hydrogeological conditions, adverse geological effects and seismic effects, are introduced, and the engineering situation of the slope is introduced in detail. 3. The pile-soil interaction mechanism, soil arch effect, is introduced. Through the FLAC3D numerical analysis model established according to the actual condition of the slope, the influence of changing the pile spacing and the pile cross-section size to resist the soil arch effect of sliding pile is analyzed and studied. A series of changes in the support effect of anti-slide pile are found when the two parameters are changed and the law of change is summed up, and the beneficial conclusions for practical engineering are obtained. 4. The necessity of supporting and strengthening the slope is demonstrated through the calculation of the limit equilibrium of the slope with the help of the leveling software, and the anti-slide pile is determined as the supporting means. The position, length and section size of the anti-slide pile are determined by trial calculation. On the basis of soil arch effect, the formula for calculating the maximum pile spacing of anti-slide pile is obtained.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P642.2;TU753.8

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