Slope shattering soil block stability calculation method

Abstract

The invention discloses a slope shattering soil block stability calculation method. The slope shattering soil block stability calculation method comprises the following steps: dividing each calculatedsliding block into n calculation units according to a breaking degree and crack development degree of each sliding block; valuing l according to breaking degree classification standard of the slidingblock; calculating each calculation unit by adopting a transfer coefficient method, and obtaining a stability coefficient of each calculation unit; solving a ratio of l in a slope surface according to a length difference value of the previous calculation unit and the next calculation unit on the slope surface, and calculating the slope shattering soil block differential stability coefficient; calculating each calculation unit of the sliding block by utilizing a transfer coefficient overload method, and obtaining a thrust force of each calculation unit; and calculating the remaining thrust force of the slope shattering soil block. By adopting the slope shattering soil block stability calculation method, not only is the breaking degree of a soil shattering slope considered, but also the breaking mode of the soil shattering slope is considered, and more accurate evidence is provided for the analysis of the stability.

Description

technical field [0001] The invention relates to the calculation of landslide stability, in particular to a method for calculating the block stability of slope shock-cracked soil. Background technique [0002] Under the influence of earthquakes, a large number of soil slope landslide disasters may occur. Slope avalanches are differential sliding of slopes with different degrees of fragmentation, rather than overall sliding. From engineering examples, it can be found that the instability failure of landslide slopes is different from that of general rock and soil slopes, and has the characteristics of shallowness, multiple occurrences and repetitions. The thickness of slope collapses is generally 5m to 7m, and there are steep slopes on the rear wall. The impact range and severity are smaller than those of deep damage, but the frequency of occurrence is extremely high, and it will happen repeatedly. It leads to changes in the original slope, and may further cause deep damage. ...

AI Technical Summary

Problems solved by technology

The thickness of slope collapses is generally 5m to 7m, and there are steep slopes on the rear wall. The scope and severity of the impact are smaller than those of deep damage, but the frequency of occurrence is extremely high, and it will happen repeatedly

It leads to changes in the original slope and may cause further deep damage

At present, the commonly used landslide stability calculation method in China is the transfer coefficient method, which has the advantage of analyzing the stability and calculating the residual thrust by means of the structural characteristics of the landslide, and can obtain the landslide thrust of any shape sliding surface under complex loads, and the calculation is simple. However, it is difficult to calculate the stability of this type of differential slip avalanche

There are two problems in the application of the traditional transfer coefficient method calculation model to the stability calculation of this kind of landslide slope: one is that the traditional method takes the slope as a whole, and considers the overall stability formed by the unified calculation and the actual fracture differentiation. The slopes are inconsistent; the second is that the overall calculation cannot reflect the stability of a single slope, which makes the engineering prevention and control have the problem of "landslide" the collapse, so it is necessary to study the stability calculation method of the soil landslide slope

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