【摘要】：伊犁谷地是新疆地區(qū)黃土滑坡最為發(fā)育的地區(qū)之一,對(duì)山區(qū)公路建設(shè)和運(yùn)營(yíng)影響較大。由于其獨(dú)特的黃土沉積環(huán)境和濕潤(rùn)氣候背景,黃土滑坡形成條件和成災(zāi)機(jī)制有別于其他地區(qū),區(qū)域特征顯著,但當(dāng)前缺少針對(duì)性的研究和系統(tǒng)性的認(rèn)識(shí)。文中選取新疆伊犁S316公路沿線發(fā)育的黃土滑坡為研究對(duì)象,基于工程地質(zhì)勘探、區(qū)域地質(zhì)調(diào)繪、氣象資料分析等,認(rèn)為公路沿線黃土滑坡是獨(dú)特黃土地貌演變過程中動(dòng)力地質(zhì)作用的產(chǎn)物,具有分布廣泛、類型多樣和暴發(fā)頻率高等特點(diǎn),其變形破壞過程概況為:張裂—蠕動(dòng)—滑移模式,破壞方式為后緣張裂與單一平面滑動(dòng);公路沿線黃土滑坡具有顯著的斜坡地形和季節(jié)性分布規(guī)律,其形成受控于特殊氣候、地層、地形、地震和人類活動(dòng)等,特殊組構(gòu)黃土是滑坡發(fā)生的內(nèi)在物質(zhì)基礎(chǔ),春夏季融水和暴雨的耦合是控制黃土滑坡大量發(fā)育的第一誘發(fā)要素;基于滑坡災(zāi)害規(guī)模和危害程度分類,提出公路沿線典型黃土滑坡的處置方案和治理對(duì)策。研究成果可為S316公路建設(shè)中防災(zāi)減災(zāi)提供基礎(chǔ)信息和技術(shù)依據(jù),對(duì)區(qū)域類似公路工程建設(shè)提供技術(shù)指導(dǎo)和參考。
[Abstract]:Yili Valley is one of the most developed areas of loess landslide in Xinjiang, which has great influence on highway construction and operation in mountainous area. Because of its unique loess sedimentary environment and humid climate background, the forming conditions and mechanism of loess landslide are different from other regions, and the regional characteristics are remarkable. However, there is a lack of targeted research and systematic understanding at present. In this paper, the loess landslide developed along Yili S316 highway in Xinjiang is selected as the research object, based on engineering geological exploration, regional geological mapping, meteorological data analysis, etc. It is considered that the loess landslide along the highway is the product of dynamic geological action in the course of the unique loess geomorphologic evolution. It has the characteristics of wide distribution, various types and high frequency of outbreak. The general situation of the deformation and failure process is as follows: tension-creeping slip model. The failure mode is the extension crack of the rear edge and the single plane sliding. Loess landslide along highway has obvious slope topography and seasonal distribution law, its formation is controlled by special climate, stratum, topography, earthquake and human activity. Special fabric loess is the inherent material foundation of landslide occurrence. The coupling of melting water and rainstorm in spring and summer is the first inductive factor to control the development of loess landslide. Based on the classification of landslide disaster scale and hazard degree, the disposal scheme and control measures of typical loess landslide along highway are put forward. The research results can provide basic information and technical basis for disaster prevention and mitigation in S316 highway construction, and provide technical guidance and reference for similar highway construction in the region.
【作者單位】： 新疆維吾爾自治區(qū)交通規(guī)劃勘察設(shè)計(jì)研究院;
【基金】：國(guó)家自然科學(xué)基金,項(xiàng)目編號(hào)41602331 中國(guó)沙漠氣象科學(xué)研究基金,項(xiàng)目編號(hào)Sqj2015015 中國(guó)博士后基金,項(xiàng)目編號(hào)2016M602951XB 新疆維吾爾自治區(qū)交通運(yùn)輸廳科技項(xiàng)目,項(xiàng)目編號(hào)2015-17
【分類號(hào)】：P642.22

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