本文選題：怒江瀘水段　切入點：岸坡穩(wěn)定性　出處：《昆明理工大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：瀘水縣位于云南省西部,隸屬于怒江傈僳族自治州。整體上處于強烈碰撞、擠壓的構(gòu)造環(huán)境,境內(nèi)山高坡陡,斷層縱橫交錯,地質(zhì)環(huán)境脆弱,地質(zhì)災(zāi)害頻發(fā),危害嚴(yán)重。怒江干流從北至南縱穿瀘水縣,怒江岸坡是地質(zhì)災(zāi)害高頻發(fā)區(qū);怒江兩岸均有大量居民住戶,怒江右岸建有S228、S230省道,且左岸有許多鄉(xiāng)村公路,很容易遭受崩塌、滑坡、泥石流等地質(zhì)災(zāi)害影響,從而威脅到人身安全。本文依托瀘水縣1:50000地質(zhì)災(zāi)害詳細(xì)調(diào)查項目,對怒江干流瀘水段岸坡特征及穩(wěn)定性分析評價作了研究。充分研究了區(qū)內(nèi)人文自然地理、氣象水文、地層巖性及人類經(jīng)濟工程活動等基礎(chǔ)地質(zhì)條件,初步分析了研究區(qū)內(nèi)岸坡的結(jié)構(gòu)類型、典型崩塌和滑坡的破壞機理、典型岸段的穩(wěn)定性。通過GIS軟件強大的空間分析功能,采用信息量法和層次分析法對怒江干流瀘水段岸坡進行了穩(wěn)定性分區(qū)研究。本文的所獲得的主要認(rèn)識和內(nèi)容如下:(1)系統(tǒng)性的分析了研究區(qū)內(nèi)的自然地理特征、氣象水文特征、地形地貌等基礎(chǔ)地質(zhì)條件。通過對研究區(qū)岸坡結(jié)構(gòu)類型的初步劃分,對典型岸段進行了穩(wěn)定性分析;對研究區(qū)內(nèi)典型崩塌、滑坡的發(fā)育特征和形成機制進行了詳細(xì)的分析。(2)通過對岸坡穩(wěn)定性評價體系進行研究,分別闡述了信息量法和層次分析法的理論及評價方法。根據(jù)評價指標(biāo)選取的相關(guān)原則,并結(jié)合野外調(diào)查的實際情況,確定了高程、坡度、坡向、工程地質(zhì)巖組、構(gòu)造緩沖區(qū)、河流作用、岸坡形態(tài)、氣候和人類活動共九個因子作為研究區(qū)的評價指標(biāo)。(3)分別建立研究區(qū)信息量法和層次分析法的評價模型,結(jié)合ArcGis軟件的空間分析和屬性計算功能,對怒江干流瀘水段岸坡穩(wěn)定性進行分區(qū)。通過對兩種評價方法的結(jié)果分析可知,在穩(wěn)定性不同區(qū)域的面積占比大致相同,但是在細(xì)化的區(qū)域岸坡穩(wěn)定性存在差異。(4)將兩種方法得到的穩(wěn)定性分區(qū)圖對比整合最終得到研究區(qū)的穩(wěn)定性分區(qū)圖。將研究區(qū)的穩(wěn)定性整體上分為四個等級,并對研究區(qū)岸坡穩(wěn)定性進行了分析。其中穩(wěn)定性好的區(qū)域面積占比為16.60%,穩(wěn)定性較好的區(qū)域面積占比為33.56%,穩(wěn)定性較差的區(qū)域面積占比為21.59%,穩(wěn)定性差的區(qū)域面積占比為28.24%.
[Abstract]:Lushui County is located in the west of Yunnan Province and belongs to Nujiang Lisu Autonomous Prefecture. On the whole, it is in a strong collision, squeezed tectonic environment, steep mountains and steep slopes, crisscross faults, fragile geological environment, and frequent geological disasters. The main stream of the Nujiang River runs longitudinally through Lushui County from the north to the south, and the bank slope of the Nujiang River is a high-frequency geological disaster area. There are a large number of residents on both sides of the Nujiang River, and the right bank of the Nujiang River has a S228-S230 provincial road, and there are many rural roads on the left bank, which are vulnerable to collapse. Landslide, debris flow and other geological disasters have affected people, thus threatening their personal safety. This paper relies on the detailed investigation project of 1: 50000 geological hazards in Lushui County. The slope characteristics and stability analysis and evaluation of Lushui section of the main stream of the Nujiang River are studied. The basic geological conditions such as human natural geography, meteorology and hydrology, stratigraphic lithology and human economic engineering activities are fully studied. The structure type of bank slope, the failure mechanism of typical collapse and landslide, the stability of typical shore section are analyzed preliminarily. Through the powerful spatial analysis function of GIS software, Using the method of information quantity and analytic hierarchy process, the stability of bank slope of Lushui section of the main stream of Nujiang River is studied. The main knowledge and contents obtained in this paper are as follows: (1) the characteristics of natural geography and meteorology and hydrology in the study area are analyzed systematically. Basic geological conditions such as topography and geomorphology. Through the preliminary classification of slope structure types in the study area, the stability of the typical shore segment is analyzed, and the typical collapse in the study area is analyzed. The development characteristics and formation mechanism of landslide are analyzed in detail. (2) by studying the evaluation system of slope stability, the theory and evaluation method of information quantity method and analytic hierarchy process are expounded respectively. Combined with the actual situation of field investigation, the elevation, slope, slope direction, engineering geological rock formation, tectonic buffer zone, river action, bank slope shape are determined. Nine factors of climate and human activities are taken as the evaluation index of the study area. (3) the evaluation models of the information quantity method and the analytic hierarchy process in the study area are established, and the spatial analysis and attribute calculation functions of the ArcGis software are combined. The slope stability of Lushui section of the main stream of Nujiang River is zoned. By analyzing the results of two evaluation methods, it can be seen that the proportion of area in different areas of stability is roughly the same. However, there is a difference in slope stability between the two methods. Finally, the stability zoning map of the study area is obtained. The stability of the studied area can be divided into four levels as a whole. The stability of the bank slope in the study area is analyzed. The proportion of the area with good stability is 16.60, the area with good stability is 33.566,the area with poor stability is 21.59and the area with poor stability is 28.24B. the proportion of the area with good stability is 16.60, the area with good stability is 33.56, the area with poor stability is 21.59 and the area with poor stability is 28.24.
【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】：2017
【分類號】：P642.2

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