Study On The Stability Of High Slope Of Gold Lake Pumping Station

Slope, earthquake and volcano are called three severe geological disasters in the world. Problem of slope in our country is particularly obvious, every year, the economic losses and number of injuries and death caused by landslide, debris flow and other natural disasters are extremely severe. It has brought in unfavorable influence on a lot of projects, especially the normal operation of key project constructions and the life of the people. Therefore, governmental institutions of our country and scientific research institutions have paid fully attention to the harnessing for the disaster of the slope, and conducted comprehensive study, including the stability analysis calculation of the slope and the scheme of renovation and strengthening.Goldlake Pumping Station is the final cascade pumping station of Dongshen water supply reconstruction works, and also a key construction project of Dongshen water supply reconstruction works, it belongs to low relief terrain and residual landform. The inlet canal of the pumping station front basin transversely cuts through the ridge. The high slope of the workshop of the pumping station is over 30m high, in the process of construction, cracks occurred due to unloading rebound of slope rock (soil), the strength was lowered after permeation of rain water, in addition, the harnessing measures were delayed, which has brought in repeated landslide and collapse to the slope, now it can operate safe and soundly after integrated harnessingIn combining to the high slope harnessing works of Goldlake Pumping Station, the thesis, on the basis of consulting both domestic and international relevant references, starting from analysis theory and method of slope stability, introduces qualitative method of slope analysis and calculation method, as well as the application of intelligence in slope evaluation, etc., and expounds monitoring on the deformation of slope and inversion analysis method, and slope real time analysis system based on 3S engineering. The thesis systematically and objectively sums up stability analysis of slope and the current status of design method as well as the development trend, points out that slope engineering is a complex open system with a lot of influential factors. Owing to the complexity of geo-technical engineering nature, it is hardly to analyze and study all slopes with a unified mode. Therefore, we have to combine to the actual features of every slope, and conduct the research withclear objective.The thesis adopts means of combining theory with practice, qualitative analysis method with quantitative and others, on the basis of site investigation and test in the room, using Swedish circle method to carry out calculation analysis and evaluation of various kinds of work conditions according to original excavated slope stability for the largest cross section of Goldlake slope's intermediate height, and points out the cause of occurring the landslide and the collapse. In addition, it applies non-linear Duncan-zhang model that is widely used at present domestically to conduct finite element analysis and calculation for the slope stress and strain, and analyzes influential factors of various sorts on the stability of the slope, such as unloading, permeation of rain water, deterioration due to water intrusion and other conditions, puts forward correspondent slope strengthening and treatment scheme that has certain level of innovation. And it also puts forward to conduct analysis on the stability and non-linear finite element for the slope after the strengthening treatment, and deduces beneficial conclusion from it, which has accumulated experiences and information for analysis and evaluation, design and construction for the similar projects.