浅析滑坡对工程的影响.doc

陕西理工学院题目：浅析滑坡对工程的影响（双语）Title: analysis of landslide influence to Engineering ( Bilingual )班级：土木092姓名：缪少童学号：0919014045浅析滑坡对工程的影响摘要: 滑坡对工程建设的危害很大,常使交通中断,影响公路的正常运输,本文结合实际,重点阐述了应对山体滑坡的山区公路施工措施。关键词:滑坡;公路;措施 1 滑坡概述 斜坡上的部分岩体和土体在自然或人为因素的影响下沿某个滑动面发生剪切破坏向下运动的现象称为滑坡。滑动面可以是受剪应力最大的贯通性剪切破坏面或带,也可以是岩体中已有的软弱结构面。规模大的滑坡一般是缓慢的、长期的往下滑动,有些滑坡滑动速度也很快,其过程分为蠕动变形和滑动破坏阶段,但也有一些滑坡表现为急剧的滑动,下滑速度从每秒几米到几十米不等。滑坡多发生在山地的山坡、丘陵地区的斜坡、岸边、路堤或基坑等地带。滑坡对工程建设的危害很大,轻则影响施工,重则破坏建筑;由于滑坡,常使交通中断,影响公路的正常运输;大规模的滑坡,可以堵塞河道,摧毁公路,破坏厂矿,掩埋村庄,对山区建设和交通设施危害很大。 滑坡分类的目的在于对发生滑坡作用的地质环境和形态特征以及形成滑坡的各种因素进行概括,以便反映出各类滑坡的工程地质特征及其发生发展的规律,从而有效地预测和预防滑坡的发生,或在滑坡发生之后有效的进行治理。根据不同的原则和指标,各国学者和工程部门对滑坡提出了各种分类方案。对于一个滑坡,从不同的角度可以有不同的分类,但实践中,我们应该抓住问题的主要矛盾,根据突出因素对滑坡进行分类,分类的原则就是看对我们认识、防治和处理此滑坡是否有帮助。 2.滑动面参数取值 根据对该滑坡勘察所取得的地质资料及目前滑坡的滑动状态,采用反演分析方法,选取典型的横断面反算滑面的力学参数,并将此反演值作为滑坡处理设计时的参数值。地下水是诱发滑坡的因素之一,在滑坡稳定性分析中,均考虑了地下水的场应力。 3. 某山区公路应对滑坡的设计方案 按照“安全、环保、舒适、美观”的原则,在满足安全和规范要求的前提下,考虑施工技术的可行性和经济上的合理性,同时根据场地地形、工程地质条件及本合同段现场实际情况,对滑坡体进行处理。 4.1主要施工流程 先施工抗滑桩,滑坡稳定后施工桥梁墩台。 锚索抗滑桩施工顺序为:测放桩位清理并稳固桩孔附近坡面施工抗滑桩锁口开挖节桩孔绑扎护壁钢筋支模浇注护壁砼开挖下一节桩孔重复上面四道工序直到设计标高封底绑扎桩身钢筋浇灌桩身砼至距桩头2m处,预留锚索孔位浇注剩余砼。锚索孔钻孔下钢绞线注浆张拉锁定。 锚索与桩身工程可分别进行,先后顺序可根据实际情况确定,但应注意相互的配合与衔接。 5. 结论 以上对滑坡的形态特征、影响边坡稳定性因素及滑坡形成条件、滑坡的防治措施做了简单的介绍。天然的或人工开挖形成的边坡到处可见,由于各种原因导致边坡失稳,引起各种规模的滑坡时有发生,给人们的生产生活带了巨大的灾难。因此,作为土木工程技术人员,我们有责任和义务去研究和治理滑坡,从而减少滑坡的发生和降低因滑坡造成的损失。相信通过我们研究的不断深入,滑坡现象将在一定程度上得到控制,我们的公路建设也会更加安全。Analysis of the landslide s influence to the projectAbstract: landslide hazard to construction greatly, often interrupted the traffic, affect the normal transportation highway, this paper focuses on the response to landslides, mountainous area highway construction measures.Key words: highway landslide; measures;Overview of 1 LandslideThe slopes of the rock and soil in the natural or man-made factors along a sliding surface shear failure downward movement of the phenomenon known as the landslide. Sliding surface can be affected by the maximum shear stress through shear failure surface or belt, also can be the weak structural plane of rock mass. Large scale landslide is generally slow, long-term downward sliding, some landslide sliding speed quickly, the process is divided into the creep deformation and sliding failure stage, but there are also some landslide show dramatic slide, slip velocity from several meters to dozens of meters per second. The landslide occurred in the mountain slopes, hilly area, shore slope, embankment or pit areas. Landslide hazard to construction, light affect construction, heavy damage to buildings; due to landslide, often interrupted the traffic, affect the normal transportation highway; large-scale landslide, can destroy the road, blocking the river, destroying mines, buried the village, to a mountainous area construction and traffic facilities of great harm.Landslide classification aims to occurrence of landslide geological environment and morphological characteristics and formation of landslide factors were summarized in this paper, in order to reflect all kinds of landslide engineering geological characteristic and development law, so as to effectively forecast and prevention of landslide occurrence, or in a landslide after effective treatment. According to different principles and indicators, scholars and engineering departments to put forward a variety of classification schemes for landslide. For a landslide, from different angles can have different classification, but in practice, we should seize the main contradiction, according to prominent factors on landslide classification, classification principle is to look to our understanding, prevention and treatment of the landslide is there to help.The 2 sliding surface parametersAccording to the landslide investigation obtained geological data and the landslide sliding state, using the inversion analysis method, selects the typical cross section calculation of mechanical parameters of slide surface, and the inversion of value as the landslide treatment design parameter values. Groundwater is one of the factors inducing landslide, the landslide stability analysis, are considered the groundwater field stress.In 3 a mountainous highway landslide design responseIn accordance with the safety, environmental protection, comfortable, beautiful principle, to meet the safety and regulatory requirements under the premise, considering the construction of technical feasibility and economic rationality, at the same time according to the terrain, the engineering geological conditions and the actual situation of contract section, the landslide treatment.4.1 main construction processThe first construction of anti-slide pile, landslide stability after the construction of bridge pier and abutment.Anchor anti-slide pile construction order: Survey and pile, pile hole cleaning firm near slope anti-slide pile to construction lock, excavation, pile hole wall, binding section reinforced to support mold, pouring wall concrete, under excavation section pile hole and repeat the above process until four to cover and binding design elevation pile reinforced and pile concrete to irrigate from pile head 2m reserved anchor hole, pouring, residual concrete. Anchor hole drilling, grouting, and under the steel strand tensioning and locking.Anchor cable and pile engineering can be respectively, the sequence can be determined according to the actual circumstances, but should pay attention to the mutual cooperation and cohesion.5 ConclusionThe above morphological characteristics, influence on the landslide slope stability factors and landslide formation conditions, measures of prevention and control are briefly introduced