本文選題：工程地質(zhì)分區(qū) + 多因素相互關(guān)系矩陣方法�。� 參考：《成都理工大學(xué)》2017年碩士論文

【摘要】：西藏自治區(qū)交通方式主要以公路運(yùn)輸為主。區(qū)內(nèi)公路網(wǎng)主要由國道318等主干道路和14條省道等組成。該路網(wǎng)承擔(dān)著絕大部分進(jìn)出西藏的物資和人員運(yùn)輸,關(guān)系著西藏自治區(qū)經(jīng)濟(jì)發(fā)展的命脈。由于西藏地區(qū)地形限制和公路展線的要求,藏區(qū)公路多沿河流、山腳、山腰及山嶺展布。所在區(qū)屬于高原地區(qū),地形地貌和地質(zhì)構(gòu)造復(fù)雜,氣候多變,日夜溫差大,崩滑流等地質(zhì)災(zāi)害十分發(fā)育。G318線自東向西穿越橫斷山、喜馬拉雅山、念青唐古拉山3大山系,涉及覺巴山、東達(dá)山、業(yè)拉山、安久拉山、色季拉山、米拉山等6座大山。近年來,該路段地質(zhì)災(zāi)害頻發(fā),常致交通中斷,嚴(yán)重影響行車安全。因此,本文選擇高原地區(qū)G318線竹巴籠—林芝段,開展地質(zhì)災(zāi)害現(xiàn)場調(diào)查,對地質(zhì)災(zāi)害進(jìn)行統(tǒng)計(jì)分析,劃分地質(zhì)災(zāi)害類型,分析其分布特征,探討地質(zhì)災(zāi)害形成原因,這對于G318線竹巴籠—林芝段的防災(zāi)減災(zāi)具有十分重要的現(xiàn)實(shí)意義。進(jìn)行的主要工作和取得的主要成果如下:(1)進(jìn)行了野外地質(zhì)調(diào)查,查明了G318線竹巴籠—林芝段的工程地質(zhì)條件,為工程地質(zhì)分區(qū)提供分區(qū)要素,并為地質(zhì)災(zāi)害成因分析提供地質(zhì)背景。該區(qū)以高山峽谷地貌為主;地層以堅(jiān)硬巖、較軟巖為主;通過的大斷裂主要有金沙江斷裂帶、怒江斷裂帶、嘉黎斷裂及雅魯藏布江斷裂帶,區(qū)內(nèi)發(fā)育復(fù)式背、向斜,主要呈南北向展布。地下水主要為松散巖類孔隙水與基巖裂隙水。(2)運(yùn)用了多因素相互關(guān)系矩陣方法,探討了影響國道318線竹巴籠-林芝段的工程地質(zhì)分區(qū)各要素的主導(dǎo)作用和所受到的影響,并根據(jù)其主導(dǎo)作用大小,運(yùn)用Arcgis空間分析模塊,對國道318線竹巴籠-林芝段進(jìn)行工程地質(zhì)分區(qū),分成5個(gè)主分區(qū)、15個(gè)亞分區(qū)、37個(gè)次亞分區(qū)。(3)對國道318線竹巴籠-林芝段的地質(zhì)災(zāi)害類型進(jìn)行調(diào)查與統(tǒng)計(jì)分析,沿線發(fā)育重大-較大地質(zhì)災(zāi)害共318處(段)。其中,泥石流108條,占總地質(zhì)災(zāi)害318處(段)的33.96%;變形、破壞斜坡體(崩塌、危巖及不穩(wěn)定巖堆145處和滑坡22個(gè)),占總地質(zhì)災(zāi)害318處(段)的45.60%;積雪路段8段,涎流冰路段25處,水毀10段。(4)國道318線竹巴籠-林芝段各類型地質(zhì)災(zāi)害區(qū)域上分布不均,地形地貌上相對集中,地層巖性上相對集中,且具有季節(jié)性的發(fā)育特點(diǎn)。各類型地質(zhì)災(zāi)害分布特征及其成因如下:(1)泥石流的分布特征及其成因:道路沿線泥石流主要分布于波密縣主分區(qū)IV區(qū),發(fā)育程度最為旺盛,占泥石流總量的35%,該區(qū)尤以次亞區(qū)IV-2-3分布占比最大,占該區(qū)泥石流總量40%。另外,次亞區(qū)V-1-1(林芝境內(nèi)),主分區(qū)III中次亞區(qū)III-1-1、III-2-1、III-2-3以及III-3-2,主分區(qū)I中次亞區(qū)I-1-1和I-1-2泥石流發(fā)育次于主分區(qū)IV區(qū)(波密縣)發(fā)育旺盛程度;其余各區(qū)泥石流零星有發(fā)育。分布特征主要受如下成因控制:地形地貌、地層巖性、地質(zhì)構(gòu)造與降雨。(2)變形、破壞斜坡體分布特征及其成因:道路沿線崩塌、危巖體及不穩(wěn)定巖堆主要分布于主分區(qū)V區(qū)(林芝)全線,次亞區(qū)IV-1-2和IV-3-1(波密縣境內(nèi)),次亞區(qū)III-1-1(八宿縣境內(nèi)),次亞區(qū)II-2-1起終點(diǎn)段落(左貢縣境內(nèi))和次亞區(qū)I-1-1、I-1-2、I-2-1、I-3-1和I-3-2起止段斜坡變形與破壞(包含崩塌、危巖體和不穩(wěn)定巖堆與滑坡),發(fā)育密度大。這幾個(gè)區(qū)共計(jì)公里程數(shù)220公里,僅占全線867公里的25.02%,卻分布著該大類不穩(wěn)定斜坡變形與破壞數(shù)量的90.57%。道路沿線崩塌、危巖體及不穩(wěn)定巖堆共計(jì)145處(段),占總地質(zhì)災(zāi)害318處(段)的45.60%;滑坡體共計(jì)22處,占總地質(zhì)災(zāi)害318處(段)的6.92%。二者共占52.52%。其余各區(qū)不穩(wěn)定斜坡與變形破壞零星有發(fā)育,僅占9.43%。分布特征主要受如下成因控制:地形地貌、斜坡巖體結(jié)構(gòu)、地質(zhì)構(gòu)造與降雨;(3)其它地質(zhì)災(zāi)害分布特征及其成因:受氣象條件、地形地貌的影響,積雪路段主要分布于雪線以上且陰山面積雪更為嚴(yán)重。涎流冰受水文地質(zhì)條件影響,主要發(fā)育于地下水較發(fā)育地段,且在積雪路段發(fā)育規(guī)模較大。水毀路段受泥石流災(zāi)害的影響,而使河流水動(dòng)力特性發(fā)生顯著變化,而集中出現(xiàn)在泥石流發(fā)育的上下游地段。
[Abstract]:The main traffic mode of Tibet autonomous region is highway transportation. The main road network in the area is composed of the main road and 14 provincial roads, such as the National Road 318 and so on. The road network bears the vast majority of the materials and personnel transportation in and out of Tibet and the lifeblood of the economic development of the Tibet autonomous region. The region belongs to the river, the foot of the mountain, the mountainside and the mountain range. The area belongs to the plateau area, the terrain and the geological structure are complex, the climate is changeable, the day and night temperature difference is large, the landslides and slides and other geological disasters are very well developed from East to west through the Hengduan Mountain, Himalaya Range and the 3 big mountains of the Shan Qing Tang and Gu La mountain, involving the kurba mountain, Dongda mountain, karma mountain, and Anne. In recent years, 6 big mountains, such as Shan Shan, color geira mountain and Mira mountain. In recent years, this section of the road has frequent geological disasters, often causing traffic interruption, seriously affecting the safety of traffic. Therefore, this paper selects the G318 line bamboo bar cage Linzhi section of the plateau area, carries out the geological disaster field investigation, carries out the statistical analysis to the geological calamity, divides the geological disaster type and analyzes its distribution characteristics. It is of great practical significance for the disaster prevention and reduction of the bamboo bar cage and Linzhi section of G318 line. The main work and the main achievements are as follows: (1) the field geological survey was carried out, the engineering geological conditions of the bamboo bar cage and Linzhi section of the G318 line were found out, and the zoning elements were provided for the engineering geological areas. And provide geological background for the cause analysis of geological disasters. This area is mainly high mountain and Canyon landforms; the strata are mainly hard rock and soft rock; the major faults are mainly Jinsha River fault zone, Nu River fault zone, Jiali fault and Yarlung Zangbo fault zone, and the complex back, syncline, mainly in the north and the south, is mainly in the north and south. The rock pore water and the bedrock fissure water. (2) using the multi factor correlation matrix method, this paper discusses the leading role and influence of various elements of the engineering geological division that affects the 318 lines of the national highway in the bamboo bar cage - Linzhi section. According to its dominant role, the Arcgis space analysis module is used to carry out the work on the bamboo bar cage and Linzhi section of the National Road 318 line. It is divided into 5 main areas, 15 subareas and 37 sub subregions. (3) the geological hazard types of the bamboo bar cage - Linzhi section of the national highway 318 are investigated and statistically analyzed, and the major geological disasters along the line are 318 (section). Among them, 108 of the debris flow, accounting for 33.96% of the total geological disaster 318 (segments), are deformed and destroyed slope bodies (avalanches, There are 145 places and 22 landslides in the dangerous rock and the unstable rock pile, accounting for 45.60% of the total geological disasters, 8 sections of the snow section, 25 of the sialol ice section, and 10 sections of water destruction. (4) the distribution of various types of geological disasters in the bamboos Linzhi section of the 318 line of the national road is uneven, the topography and geomorphology are relatively concentrated, the lithology of the strata is relatively concentrated and has seasonal development special. The distribution characteristics and causes of various types of geological disasters are as follows: (1) the distribution characteristics and causes of debris flow: the debris flow along the road is mainly distributed in the IV area of the main sub area of Po Min County, which is the most prosperous, accounting for 35% of the total debris flow, and the largest distribution ratio of the sub region of this area, the total amount of 40%. in the mudflow in this area, and the sub sub region V-1 -1 (Linzhi), III-1-1, III-2-1, III-2-3 and III-3-2 in the sub sub region of the main subregion III, the development of I-1-1 and I-1-2 debris flow in sub sub region of the main subregion is second to the main partition IV region (PO Min county). The debris flow in the remaining areas is sporadic. The distribution characteristics are mainly controlled by the following causes: topography, lithology, geological structure and reduction. (2) (2) deformation and destruction of the distribution characteristics of the slope body and its causes: the landslides along the road, the critical rock mass and the unstable rock pile are mainly distributed in the main area of the main zoning V region (Linzhi), the subregion IV-1-2 and IV-3-1 (in the border county), the subregion III-1-1 (in the Suzhou county), the II-2-1 end of the subregion (Zuo Gong county) and the subregion I-1-1, I-1-2, I-2-1, I-3 The slope deformation and damage (including collapse, dangerous rock mass and unstable rock pile and landslide) of -1 and I-3-2 is large. These areas have a total distance of 220 km, accounting for only 25.02% of the total line 867 km, but they are distributed along the 90.57%. road with unstable slope deformation and destruction, and 1 of the dangerous rock and unstable rock piles totalling 1. 45 (section), accounting for 45.60% of the total geological hazards in 318 (section), 22 of the landslides, accounting for 318 of the total geological disasters, and 318 of the total geological disasters, 6.92%. two, accounting for the unstable slope and deformation of the remaining regions of the rest of the region, and the distribution characteristics of 9.43%. are mainly controlled by the following causes: topography, slope rock structure, geological structure and rainfall; (3) Its geological hazard distribution features and its causes: affected by meteorological conditions, topography and geomorphology, snow covered sections are mainly distributed over snow lines and the snow of Yinshan area is more serious. The saliva flow ice is affected by hydrogeological conditions, mainly developed in the more developed areas of groundwater, and is larger in the snow section. The shadow of the water damage section is affected by the debris flow disaster. The dynamic characteristics of river water changed significantly, but concentrated on the upper and lower reaches of debris flow development.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U412.22

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