【作者】 曾舜；

【导师】 欧湘萍；

【作者基本信息】 武汉理工大学 ， 道路与铁道工程， 2005， 硕士

【摘要】 丹东-拉萨国道(110国道)是我国东西方向的主干公路动脉，是西部大开发的交通要道，随着我国高等级公路网络化的兴起，山区公路建设面临的环境地质问题日益突出。本研究论文以呼和浩特至集宁高速公路(丹东-拉萨国道的一部分)特定的地质环境为背景，以呼和浩特至集宁高速公路K401+050～K401+400段、K430+850-K431+400段、K449+456．5～K449+600段以及K453+200～K453+800段的坡体为具体研究对象，运用地质分析法和有限元数值计算方法对深路堑膨胀性软岩边坡的稳定性进行了综合评价。在此基础上，研究了其防治对策与综合治理措施。 呼集高速公路沿线地质条件较复杂，深路堑开挖地段节理发育，且多有膨胀性软岩分布，其岩性主要为强度较低的泥岩和页岩，膨胀性强，遇水后极易膨胀软化。公路施工的边坡开挖改变了坡体原有的平衡状态，在内外动力因素的影响下，易降低坡体的强度与稳定性，从而导致边坡的失稳。同时，针对呼和浩特至集宁高速路四处典型的深路堑膨胀性软岩路段，选取其中一个具有代表性的边坡进行有限元分析计算，结合引起坡体失稳的地质因素和有限元计算得出的结果对边坡的稳定性进行了综合的分析评价。 目前，国内外对滑坡的治理措施主要有两种类型，一类是减滑工程措施，如加载反压、消方减重、排水整治；另一类是抗滑支挡工程措施，如抗滑挡土墙、抗滑桩、锚杆(索)加固以及锚索抗滑桩加固等。本文根据呼集高速公路深路堑膨胀软岩边坡的特点，有针对性地提出了其防治对策与综合治理措施，以求形成综合有效的边坡防护体系。 呼集高速公路遇到的强膨胀土地区进行深路堑施工的问题，具有很重要的研究价值。通过对呼和浩特至集宁高速公路膨胀性软岩边坡的稳定性分析及防治对策与措施的研究，必将会对西部大开发中的公路建设有着广泛的借鉴意义与实用价值。更多还原

【Abstract】 The national highway of Dandong-Lasha (110 national highway) is a backbone highway artery of the national west-east direction, and the traffic main artery of the development of the West Regions, Following the rising of our country mains, the problem about geology of mountainous area of the highway building is becoming outstanding. So this article puts forward the advice about the integrated control countermeasure of the slope, through taking the state specific geological environment of Hohhot-Jining freeway(one part of the national highway of Dandong-Lasha) as the background, Regarding the landslide of K401+050 ~ K401 + 400 segment, K430+850-K431+400 segment, K449+456.5 ~ K449 + 600 segment and K453+200~+800 segment of the Hohhot-Jining freeway as the research object.And assessment the stability fo slope in the method of integrated geological analysis and finite element analysis. and find a general prophylactico-therapeutic measures.The geology condition around Hu-Ji freeway is very complicated, joints is developing in the drilled area of deep cutting, and there are much expansive incompetent bed , which mainly contains weaker plaster rock and shale break. The slope cutting in highway construction changed the primary balance of the slope. The effect of inward and outward factors, decreased the intensity and stability of the slope, which leads to the slope’s imbalance. Selected one representation segment from the four canonical segments of the Hohhot-Jining freeway, calculated its stability in the FEM way.Associatived with geology way and FEM way, Conplex Evaluated the stability of the selecting part in the comprehensive analysis measure.At present, according to the element, developing phase and character that cause the slope, the principle countermeasure to the slope are decreasing slope, decreasing loads, drain off water, sustain, counter pressure, grouting and anchoring ect. According to the character of the expansion of the weaker plaster rock Hu - Ji freeway,The paper presented the conclution and prophylatico-therapeutic measures recommendations for this kind of similarity slope.For formatting a slope protective system.Through the study to the protection policy and measure of the slope research of Hohhot-Jining freeway, it would be an extensive reference significance and practical value to the highway construction in the development of the West Regions.更多还原