Safety analysis and movement distance calculation method of freeze-thaw landslide

Abstract

The invention provides an analysis and movement distance measurement and calculation method for the safety of a freeze-thawing type slippery slope and belongs to the technical field of prevention andcontrol safety of geological disasters. According to the analysis and movement distance measurement and calculation method or the safety of the freeze-thawing type slippery slope, two calculation modules are included and comprise a safety calculation module and a movement distance calculation module; a rigid block model is established and a safety coefficient is calculated; critical temperature isdetermined; when the temperature exceeds the critical temperature, a slippery slope is instable. A wall body unit and a block unit are divided for the instable slippery slope, and a speed and a distance in a slippery slope movement process are calculated. According to the freeze-thawing type slippery slope safety analysis and movement distance measurement and calculation method, the safety of thefreeze-thawing type slippery slope can be rapidly evaluated according to temperature changes in a 1 to 10000 frozen earth investigation region map sheet range and the evaluation efficiency is 70 percent better than that of a numerical simulation evaluation method. Meanwhile, a range in which the slippery slope possibly moves can be measured and calculated according to the algorithm.

Description

technical field [0001] The invention relates to a method for safety analysis and movement distance measurement of freeze-thaw landslides, belongs to the technical field of geological disaster prevention and safety technology, and is widely applicable to safety evaluation and movement range evaluation of landslides in freeze-thaw areas. Background technique [0002] Xinjiang, Qinghai, Tibet, Inner Mongolia, Heilongjiang, etc. are permafrost or seasonally frozen areas, and a series of freeze-thaw landslide instability problems such as thawing mud flow and thermal thawing landslides have become increasingly prominent. Safety and the safety of residents' lives and property constitute a serious threat. Therefore, there is an urgent need to scientifically analyze the safety of freeze-thaw landslides in permafrost regions and measure the range of their possible movements. [0003] Different from other types of landslides, temperature changes are the key factors triggering freeze-t...

AI Technical Summary

Problems solved by technology

If the safety and range of movement of landslides in the freeze-thaw zone are not clearly understood, it will inevitably hinder or restrict the construction and operation of traffic lines, public infrastructure, and new urban areas in the zone, which will affect the country's important development strategic planning and bring disastrous consequences. estimated loss

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