The Appraisal Research Of Stability Of The FuJiaPo Slope In The ShangHai-ChengDu State Highway's West Part Of HuBei Province

The ShangHai-ChengDu national highway in the west of HuBei province is a transmeridional important backbone of our country, and one of the key construction projects of the country, develop and play an important role with economic construction to the west. The expressway is one of the important components of the west national arterial highway to bestowing favour in Yichang of Hubei, construct things numerously in such projects as the bridge and tunnel ,etc. This high level ground of backbone - Lucky new sections of K177+000~K178+ 400 existence of landslide is to the construction and run have security and quality hidden danger safely of expressway. Research this thesis to bestow favour expressway specific geological environment as the background with YiChang, with YiChang to bestow favour expressway K177 +000~K178+400 pay house slope to come down for the concrete research object, use limit to be balanced and finite element number value is it appraise method go on comprehensive appraisal to landslide stability to calculate, and put forward to this kind of landslide and have general prevention and cure countermeasure and measure.The geological condition is complicated along the line of the expressway to bestowing favour of Yichang, the location section haircut of the deep cutting is bred, soil property is mainly soft clay and broken stone and soil. Base rock crevice water is it deposit on sandstone , mud stone constructing cracking and weathering cracking to compose mainly, in order to accept atmospheric rainfall and the fourth hole water supply as main fact , water level and water yield dynamic change of groundwater receive rainfall to be of great impact. The slope has excavated and changed the slope body already existing balance state in the side of the construction of the highway, under the influence of internal and external motive force factor, such as the little ground form of side slope, slip the surface with bringing the soil a characteristic slipperily, slope recent activity state , torrential rain intensity , trailing edge load situation, river function, comprehensive function of factor, activity of mankind and function ,etc. of earthquake, will reduce the intensity and stability of the slope body , thus cause the slope is lost steadily. So for guarantee quality and security of highway engineering, must stability , opposite side of slope carry on full and accurate overall synthesis analyse and appraise at first, and then put forward effectual prevention and cure countermeasure and measure.The balanced law of limit is used for a long time, it is a kind of more reliable method . Finiteelement law apply rock soil all field, project of circle extensively already too, in slope stability analyse respect,compared with traditional balanced method of limit finite element law, there are one's own strong function and wide development prospect. Each analysis of field in the future is it have to the limited number value trend changing to calculate. Is it pay house actual conditions that slope come down to carry on finite element calculate to combine , combine geological factor come down to cause quantitative datum get objective stability appraisal out of. Comparatively effective administration scheme of proposition that so as to be pointed. At present, mainly have two kinds to the prevention and cure measure of coming down both at home and abroad, one reduces the slippery project measure, and then reduce heavily , drain off water and renovate such as loading pressing, disappearing instead; Another to is it is it prop up measure of blocking to slip to resist, such as resist slippery retaining wall, is it slip to resist, stock (ask for ) strengthen and anchor is it is it slip one strengthen etc. to resist to ask for. This text research contents to is it pay house characteristic that slope come down to combine , put forward reasonable effective prevention and cure way in this area is similar to geologically cases mainly, in order to is it synthesize effective side slope protect system , reduce project fabrication cost come down to renovate to form. Slope deep cutting construction question by the soft rock met in expressway to bestowing favour in YiChang, have very important research value. Through pay house stability that slope come down to analyse and prevent and cure countermeasure and research of measure to this section, must there are extensive reference meaning and practical value to the road construction in the development of western regions .