發(fā)布時(shí)間：2018-01-08 19:17

  本文關(guān)鍵詞：新疆天山公路地質(zhì)災(zāi)害危險(xiǎn)性評(píng)價(jià)研究　出處：《重慶交通大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 天山公路地質(zhì)災(zāi)害危險(xiǎn)性評(píng)價(jià) 評(píng)價(jià)模型 GIS技術(shù)

【摘要】：國(guó)道G217是連接新疆南北的主要國(guó)防公路,擔(dān)當(dāng)新疆“二縱三橫”主要公路中的一部分,但公路兩側(cè)的地質(zhì)災(zāi)害頻發(fā),使該國(guó)道無法保持正常通行,降低了公路通車量和使用性,進(jìn)而嚴(yán)重影響了新疆的經(jīng)濟(jì)發(fā)展和沿線居民的生命財(cái)產(chǎn)安全。本文基于國(guó)內(nèi)外公路區(qū)域地質(zhì)災(zāi)害的相關(guān)研究成果,結(jié)合天山地區(qū)的自然地理環(huán)境及工程地質(zhì)條件,分析了天山公路地質(zhì)災(zāi)害發(fā)育的影響因素和分布特征,綜合應(yīng)用層次分析法、模糊綜合評(píng)價(jià)法及BP神經(jīng)網(wǎng)絡(luò)法對(duì)天山公路地質(zhì)災(zāi)害的現(xiàn)狀和特點(diǎn)進(jìn)行了分析,取得如下研究成果:(1)構(gòu)建天山公路地質(zhì)災(zāi)害危險(xiǎn)性評(píng)價(jià)指標(biāo)體系:分析天山地區(qū)的自然地理環(huán)境和地質(zhì)環(huán)境,總結(jié)天山公路沿線地質(zhì)災(zāi)害的影響因素和分布特征,最終選取了12個(gè)影響天山公路地質(zhì)災(zāi)害危險(xiǎn)性的主要評(píng)價(jià)指標(biāo),即地質(zhì)構(gòu)造(u1)、地層巖性(u2)、地貌類型(u3)、坡角(u4,°)、坡高(u5,m)、植被覆蓋率(u6,%)、年均降雨量(u7,mm)、日最高氣溫(u8,℃)、降雨強(qiáng)度(u9,mm/10min)、地震烈度(u10,度)、路基位置(u11)、路面拔河高度(u12,m),并采用專家系統(tǒng)法對(duì)每個(gè)評(píng)價(jià)指標(biāo)進(jìn)行賦值。(2)總結(jié)天山公路地質(zhì)災(zāi)害的發(fā)育特征:分析天山公路沿線地質(zhì)災(zāi)害的類型、分布特征及分布規(guī)律,通過天山公路沿線地質(zhì)災(zāi)害的發(fā)育特征進(jìn)行了詳細(xì)分析,研究影響天山公路地質(zhì)災(zāi)害形成的內(nèi)、外動(dòng)力地質(zhì)作用。根據(jù)所收集的相關(guān)資料,采用GIS技術(shù)、CAD軟件等軟件相結(jié)合,編制了天山公路12個(gè)地質(zhì)災(zāi)害危險(xiǎn)性評(píng)價(jià)指標(biāo)的危險(xiǎn)性分布圖。(3)天山公路地質(zhì)災(zāi)害危險(xiǎn)性評(píng)價(jià):綜合應(yīng)用層次分析法、模糊綜合評(píng)價(jià)法及BP神經(jīng)網(wǎng)絡(luò)法,建立了天山公路地質(zhì)災(zāi)害危險(xiǎn)性評(píng)價(jià)模型,揭示了天山公路地質(zhì)災(zāi)害危險(xiǎn)性分布規(guī)律,其中低危險(xiǎn)公路段306km,占天山公路全長(zhǎng)的57.1%;中危險(xiǎn)公路段25km,占天山公路全長(zhǎng)的4.7%;高危險(xiǎn)公路段67km,占天山公路全長(zhǎng)的12.5%;極高危險(xiǎn)公路段138km,占天山公路全長(zhǎng)的25.7%;所得結(jié)果與實(shí)際情況相符,由此可見,天山公路地質(zhì)災(zāi)害整體危險(xiǎn)性較高,在相關(guān)工程中應(yīng)加強(qiáng)重視。
[Abstract]:G217 is the main national defense highway connecting the north and south of Xinjiang, Xinjiang as part of the "two vertical and three horizontal" main road, but the road on both sides of the frequent geological disasters, the state cannot maintain normal traffic, reduce the traffic volume and the use of, and seriously affected the economic development of Xinjiang and the safety of the residents along the line life and property. In this paper, the domestic and foreign related research results of regional geological hazards based on highway, combined with the natural geographic environment and engineering geological conditions in the Tianshan area, analyzes the influence factors of Tianshan highway geological disaster development and distribution, comprehensive application of the analytic hierarchy process, the status and characteristics of fuzzy comprehensive evaluation method and BP neural network method for geological disaster in Tianshan Mountains the road was analyzed. The research results are as follows: (1) construction of the Tianshan highway geological hazard evaluation system: analysis of natural geography in Tianshan area The environment and geological environment, summarizes the geological disasters along the Tianshan Highway factors and distribution characteristics, the final selection of 12 main evaluation index of Tianshan Highway geo hazard, namely geological structure (U1), lithology, landform (U2) (U3), slope angle (U4 degrees), high slope (U5, m), vegetation coverage rate (U6%), the average annual rainfall (U7, mm), the daily maximum temperature (U8 DEG C), rainfall intensity (u9, mm/10min), seismic intensity (U10 degrees), the position (U11), pavement height (U12, m) the tug of war, and by using the expert system method is assigned to each index. (2) summarizes the development characteristics of geological disaster in Tianshan Highway: type analysis of geological disasters along the Tianshan highway, distribution characteristics and distribution, are analyzed in detail through the development characteristics of geological disasters along the Tianshan highway, study on the influence of geological disasters in the formation of Tianshan highway, external power according to the geological effect. Related data sets, using GIS technology, CAD software and other software combined with the developed risk distribution map of Tianshan Highway 12 geological hazard evaluation. (3) the risk of highway geological disaster evaluation: the comprehensive application of the analytic hierarchy process, fuzzy comprehensive evaluation method and BP neural network method, establishes the evaluation the risk of Tianshan highway geological disaster model, reveals the Tianshan Highway geo hazard distribution, the low risk highway 306km, accounting for 57.1% of the total length of the Tianshan highway; dangerous section of highway 25km, accounting for 4.7% of the total length of the Tianshan highway; high risk highway 67km, accounting for 12.5% of the total length of the Tianshan highway; high risk highway 138km, accounted for 25.7% of the full length of the Tianshan highway; consistent with the actual situation, the result shows, overall higher risk of highway geological disasters in the Tianshan Mountains, related projects should be enhanced.

【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U412

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