本文選題：地面沉降　切入點：地裂縫　出處：《吉林大學》2015年碩士論文　論文類型：學位論文

【摘要】：京沈客專北京段位于北京市東北部區(qū)域。主要經(jīng)過北京東北部平原區(qū)及東北部山區(qū),地形多樣,地質條件復雜,沿線構造復雜,不良地質、特殊巖土體發(fā)育,工程地質問題眾多,影響范圍廣泛。在平原區(qū),該鐵路通過北京市重要的地面沉降區(qū)、地裂縫較發(fā)育區(qū),線路沿線區(qū)域已經(jīng)發(fā)現(xiàn)多處由此引起的房屋破壞、道路塌陷等現(xiàn)象。因此,對沿線地面沉降及地裂縫發(fā)育特征及危害性進行系統(tǒng)的研究是保證鐵路建設、運營安全首要任務。本論文針對京沈客專北京段地面沉降、地裂縫發(fā)育特征進行了詳細的研究和評價。京沈客專北京段在DK35+888處穿越高麗營地裂縫,黃莊~高麗營斷裂起到主控條件,誘激因素是地面沉降,發(fā)育程度受到土層介質的制約和地貌環(huán)境影響。目前,該區(qū)域地裂縫仍在活動中,并且具有長期活動的趨勢。本文采用三分帶處理方法進行構造影響帶分類,并據(jù)此進行地裂縫分區(qū),高麗營地裂縫DK35+778-DK35+927段為地裂縫危險區(qū),斷裂兩側1000m范圍內(nèi)為地裂縫潛在危險性大區(qū)。DK21穿順義斷裂處、DK28穿南口-孫河斷裂處,線路穿越活動斷裂,斷裂兩側1000m范圍內(nèi)確定是地裂縫潛在危險性大區(qū)。DK54穿北小營斷裂處,地面沉降發(fā)育較弱,并且北小營斷裂為次級斷裂,斷裂外1000米范圍內(nèi)是地裂縫潛在危險性小區(qū)。京沈客專北京段沿線經(jīng)過東郊八里莊-通州臺湖沉降區(qū)、朝陽區(qū)來廣營-金盞沉降區(qū)和昌平沙河-八仙莊沉降區(qū)。本文通過長時間的監(jiān)測,利用大量數(shù)據(jù)分析、總結擬建京沈鐵路沿線主要沉降特征,并根據(jù)國土資源部發(fā)布的《地質災害危險性評估規(guī)范》(報批稿)中對時速大于200km鐵路工程遭受地質災害預測評估分級。其中,鐵路DK10~DK38區(qū)間此區(qū)間地面沉降發(fā)育程度為強發(fā)育,地面沉降災害危險性大;鐵路DK38~DK70區(qū)間位于地面沉降主要沉降中心之外,此區(qū)間位于地面沉降影響范圍外,遭受地面沉降的可能性小,地面沉降發(fā)育程度為中等發(fā)育,地面沉降災害危險性為中等。本文研究成果不僅為京沈鐵路北京段的規(guī)劃設計提供基礎依據(jù),還可進一步充實北京地區(qū)地面沉降與地裂縫的形成機理及危害性評價體系,具有一定的理論研究意義與實際應用價值。
[Abstract]:The Beijing-Shen-Ke special Beijing section is located in the northeast part of Beijing. It mainly passes through the northeast plain of Beijing and the northeast mountainous area. The terrain is diverse, the geological conditions are complex, the structure along the line is complicated, the bad geology, and the special rock and soil are developed. There are numerous engineering geological problems and a wide range of impacts. In the plain area, the railway passes through an important land subsidence area in Beijing, where the ground fissures are relatively developed, and many resulting house damage has been found in the areas along the lines. Therefore, it is the primary task of ensuring railway construction and operation safety to systematically study the characteristics and harmfulness of land subsidence and ground fissures along the railway line. The characteristics of ground fissures were studied and evaluated in detail. In the Beijing-Shenyang-Ke special section of Beijing, the cracks passed through Koryo camp at DK35 888, the Huangzhuang ~ Gaoliying faults played the main control condition, and the inducement factor was land subsidence. The degree of development is restricted by soil media and affected by geomorphological environment. At present, the ground fissures in this area are still active and have a trend of long-term activity. According to the division of ground fissures, the DK35 778-DK35927 section of Gaoli camp is a dangerous area of ground fissures, and the potential dangerous area of ground fissures within 1000m on both sides of the fault. DK28 passes through Nankou-Sunhe fault at Shunyi fault, and the line passes through active faults. Within 1000 m of the range of 1000 m on both sides of the fault, it is determined that the potential danger area of the ground fissures. DK54 passes through the Beixiaoying fault, and the ground subsidence develops weakly, and the Beixiaoying fault is a secondary fault. Within 1000 meters of the fault is the potentially dangerous area of ground fissures. Along the Beijing section of Jingshengke Special School, it passes through the Balizhuang-Tongzhou Lake subsidence area in the eastern suburb, The settlement area between Laiguangying and Jinzhang in Chaoyang District and Shahe-Baxianzhuang subsidence area in Changping area. This paper summarizes the main subsidence characteristics along the proposed Beijing-Shenyang railway by monitoring for a long time and analyzing a large number of data. And according to the classification of geological hazard prediction and evaluation of railway project over 200km per hour issued by Ministry of Land and Resources, the ground subsidence development degree in this section of railway DK10~DK38 interval is strong. The DK38~DK70 section of railway is located outside the main settlement center of land subsidence, which is located outside the influence area of land subsidence, the possibility of land subsidence is small, and the development degree of land subsidence is moderate. The research results of this paper not only provide the basis for the planning and design of Beijing section of Beijing-Shenyang railway, but also further enrich the formation mechanism and hazard evaluation system of ground subsidence and ground fissures in Beijing area. It has certain theoretical significance and practical application value.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P642.26

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