本文關(guān)鍵詞： 梓潼縣 地質(zhì)災(zāi)害 危險(xiǎn)性評(píng)價(jià) 層次分析法 模糊綜合評(píng)判法　出處：《西南科技大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：本文通過(guò)野外地質(zhì)災(zāi)害調(diào)查與室內(nèi)綜合研究,分析總結(jié)了梓潼縣地質(zhì)災(zāi)害發(fā)育的自然地理與地質(zhì)環(huán)境條件,闡明了地質(zhì)災(zāi)害的類(lèi)型、特征及分布規(guī)律。在分析各類(lèi)地質(zhì)災(zāi)害形成條件及影響因素的基礎(chǔ)上,確定了地層巖性、相對(duì)高差、坡度、距災(zāi)點(diǎn)距離、距水系距離、距道路距離作為此次危險(xiǎn)性評(píng)價(jià)研究的評(píng)價(jià)因子;建立了評(píng)價(jià)指標(biāo)體系。利用GIS技術(shù)對(duì)各評(píng)價(jià)因子的數(shù)據(jù)圖層進(jìn)行統(tǒng)一處理,以便于評(píng)價(jià)因子的疊置分析�；贏rc Map10.0的Arc Info平臺(tái),利用Arc Toolbox中的空間分析工具的“歐氏距離”分析模塊提取距災(zāi)點(diǎn)距離、距水系距離、距道路距離的指標(biāo)值,在梓潼縣DEM的基礎(chǔ)上對(duì)坡度、相對(duì)高差的指標(biāo)值進(jìn)行提取,而地層巖性的指標(biāo)值則是由梓潼縣地質(zhì)圖矢量化后,轉(zhuǎn)換成柵格數(shù)據(jù)圖層。根據(jù)有關(guān)規(guī)范和標(biāo)準(zhǔn),結(jié)合梓潼縣的地理環(huán)境、地質(zhì)環(huán)境特點(diǎn)以及已發(fā)生災(zāi)害點(diǎn)的分布特征等實(shí)際情況,將研究區(qū)的地質(zhì)災(zāi)害危險(xiǎn)性按照高、中、低三個(gè)等級(jí)劃分,并確定了評(píng)價(jià)指標(biāo)的分級(jí)標(biāo)準(zhǔn)。利用層次分析法確定了各評(píng)價(jià)因子的權(quán)重。采用AHP法和模糊綜合評(píng)判法分別對(duì)梓潼全境地質(zhì)災(zāi)害進(jìn)行危險(xiǎn)性評(píng)價(jià),得出兩種方法的危險(xiǎn)性等級(jí)分區(qū)圖,用已發(fā)生災(zāi)點(diǎn)來(lái)對(duì)評(píng)價(jià)結(jié)果進(jìn)行驗(yàn)證,并對(duì)兩者進(jìn)行對(duì)比分析,發(fā)現(xiàn)模糊綜合評(píng)判法更加精確、更加科學(xué)。同時(shí)結(jié)合研究區(qū)實(shí)際情況,制定出合理的防治對(duì)策。
[Abstract]:Through field geological hazard investigation and indoor comprehensive research, this paper analyzes and summarizes the natural geography and geological environment conditions of geological disaster development in Zitong County, and expounds the types of geological hazard. On the basis of analyzing the forming conditions and influencing factors of various geological disasters, the formation lithology, relative height difference, slope, distance from disaster point and distance from water system are determined. Distance from the road is the evaluation factor of the risk assessment study. The evaluation index system is established and the data layer of each evaluation factor is processed uniformly by using GIS technology. In order to facilitate the overlay analysis of evaluation factors. Arc Info platform based on Arc Map10.0. Using the "Euclidean distance" analysis module of the spatial analysis tool in Arc Toolbox to extract the index value of distance from disaster point, distance from water system and distance from road. On the basis of DEM in Zitong County, the index value of slope and relative height difference is extracted, while the index value of stratigraphic lithology is vectorized by geological map of Zitong County. According to the relevant norms and standards, combined with the geographical environment, geological environment characteristics and the distribution characteristics of disaster sites in Zitong County, etc. The geological hazard of the study area is divided into three grades: high, middle and low. The classification standard of evaluation index is determined, the weight of each evaluation factor is determined by AHP, and the risk assessment of geological hazard in Zitong is carried out by using AHP method and fuzzy comprehensive evaluation method respectively. The hazard level zoning map of the two methods is obtained, and the evaluation results are verified by the occurrence disaster points, and the results are compared and analyzed. It is found that the fuzzy comprehensive evaluation method is more accurate. More scientific. At the same time combined with the actual situation in the research area, to formulate reasonable prevention and control countermeasures.
【學(xué)位授予單位】：西南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P694

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 蔡云廷;王利偉;曾江波;;大準(zhǔn)鐵路沿線(xiàn)崩塌形成條件及防治措施研究[J];山西建筑;2006年19期

2 董孟;李虎杰;;綿陽(yáng)市北川縣地質(zhì)災(zāi)害發(fā)育特征及誘發(fā)因素分析[J];科技創(chuàng)新導(dǎo)報(bào);2008年08期

相關(guān)碩士學(xué)位論文 前1條

1 席盼盼;基于GIS的朗縣地質(zhì)災(zāi)害易發(fā)性評(píng)價(jià)研究[D];吉林大學(xué);2014年

，

本文編號(hào)：1491777