An Optimal Calculation Method for Landslide Soaking Line and Thrust Force During Reservoir Operation Period

Abstract

This application relates to a landslide infiltration line and thrust optimization calculation method during the operation period of a reservoir, which includes step 1, obtaining the reservoir water level fluctuation curve, and generalizing the multi-year reservoir water level operation generalized curve according to the key feature points of the reservoir water level fluctuation curve . Step 2. Obtain the calculation parameters of the landslide by collecting survey reports, field investigations and tests. Step 3. Deduce the calculation formula of the seepage line of the landslide on the bank of the reservoir when the reservoir water level fluctuates continuously, and obtain the change curve of the seepage line of the landslide under the continuous fluctuation of the reservoir water level. Step 4. On the basis of obtaining the calculation formula of the soaking line, calculate and obtain the stability coefficient and residual thrust of the downslope caused by the fluctuation of the reservoir water level. The beneficial effect of the present invention is that the landslide remaining thrust obtained by calculation and the calculation of the stability coefficient are more in line with the real state of the landslide; under the premise of ensuring safety, the engineering cost can be effectively saved, and the combined transfer coefficient method for calculating the infiltration line by the analytical solution The calculation method of is very practical in engineering.

Description

technical field [0001] The invention relates to a landslide seepage line and thrust optimization calculation method during the operation period of a reservoir, belonging to the field of geological disaster prevention and control. Background technique [0002] The Three Gorges Project officially stored water for power generation in June 2003. Since 2008, the water level of the reservoir has fluctuated periodically between 145m and 175m every year. The periodic fluctuation of reservoir water level is one of the main factors that induce reservoir bank landslides. At present, the influence of reservoir water level fluctuation on landslide stability has received extensive attention. Groundwater has a decisive impact on the stability of landslides, so the stability analysis of wading landslides in the reservoir area needs to first determine the position of the infiltration line in the slope. [0003] At present, in the design of reservoir landslide prevention and control enginee...

AI Technical Summary

Problems solved by technology

This is obviously not in line with the actual operating conditions of the Three Gorges Reservoir area in the past ten years

Especially for large hydraulic landslides on the banks of reservoirs, calculations using existing methods often make the obtained landslide residual thrust and stability coefficient unable to reflect the real state of the landslide, resulting in high safety reserves and construction costs of the project

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