Stability Analysis And Reinforce Techniques Of High Slope Along The Specific Road In Jinping Hydroelectric Power Station

Jinping-â… and Jinping-â…¡hydropower project lie in the remote high mountainous and deep valley areas of Mianning County,Liangshan Yi Autonomous Prefecture, Sichuan province.The projects are the main hydropower projects of the midle/lower reaches(from Kala to estuary)of the Yalong river.The starting-point of the outbound traffic highway of Jinping-â… and Jinping-â…¡hydropower project lies in Mansuiwan town which is in the eastern side of Maoniu mountain and along An'ning riverside. The end point of the outbound traffic highway is the left bank of the Yalong River Bridge of Jinping -â…¡Hydropower project.The highway is 57 km long which is along the high mountains and deep V-type and U-type valley.The complex geological conditions and steep topography lead to many high slope problems and geological disasters.So stability analysis of the slope and its control measure become a critical technology in Jinping Hydropower construction.A review and summary on stability analysis of the high slope and its treatment technology was made in this paper firstly.The study field was presented on the basis of the practices of stability analysis and its control measures of the high slope of Jinping hydropower project outbound traffic highway.The main research works and its conclusions are summed up as followed.(1)the analysis surveying has been carried out on the destroying of accommodation road high slope for Jin ping hydroelectric station.Have brought out many hydrography condition which affecting high slope,point out the bad various geology condition which may produce the stability affecting the high slope,And,the eight engineering geology conditions has carried out analysis on representative high slope,have pointed out the destroying pattern which may happened.(2)According to high slope engineering geology,summed up out the loss destroying pattern and mechanism,basic on that,summed up out four kinds of loss destroying pattern.(3)According to 4 kinds loss,the stability analysis method have been brought forward applying to that high slope on having analyzed the high slope detailed losing the basis destroying a pattern's surely,have been that the straight line,arc type or the stability seeming the arc type destroys analyses method,have given a corresponding stability out reckoning together.(4)4 kinds of high slopes have destroyed patterns according to that section, have brought forward corresponding prevention and cure project measure,and have brought forward the comprehensiveness prevention and cure project measure.(5)The analysis results are applied to the high slope prevention and cure project of the Jinping hydropower project outbound traffic highway.The engineering practice indicated that the analysis results have better technological and economical effect on the project and can be referential the similar project.