Karst surface collapse analysis method

Abstract

The invention relates to the technical field of geological disaster prevention and control, and discloses a karst surface collapse analysis method, which comprises the following steps of obtaining a geological structure, a hydrological structure and a construction collapse condition of a target area; dividing the collapse process of the target area into an engineering construction penetration stage and a sudden collapse stage; in the engineering construction penetration stage, judging the penetration mode of the karst cave or the soil cave in the construction process according to the construction collapse condition; and in the sudden-change collapse stage, obtaining the change condition of the geological structure and the change condition of the hydrological structure, and judging the collapse type of the karst cave or the soil cave so as to determine the surface collapse forming mechanism of the target area. According to the method, the penetration effect analysis of engineering construction is introduced, and the surface collapse formation mechanism of the target area is obtained by combining the change conditions of the geological structure and the hydrological structure, so that the karst surface collapse formation mechanism caused by the penetration effect of engineering construction can be accurately determined, and effective basis and guidance are provided for urban related disaster prevention and reduction work.

Description

technical field [0001] The invention relates to the technical field of geological disaster prevention and control, in particular to an analysis method for karst ground subsidence. Background technique [0002] With the continuous development of urbanization in our country, urban geological disasters induced by engineering construction occur from time to time. Especially in karst-developed areas, ground subsidence problems caused by foundation or exploration construction have caused huge losses. The emergence of ground subsidence not only affects the safety and construction progress of engineering construction, but also seriously threatens the safety of people's lives and property and urban safety. Therefore, how to scientifically analyze the formation mechanism of ground subsidence is of great practical significance and provide effective basis and guidance for urban related disaster prevention and mitigation work. [0003] Aiming at the formation mechanism of ground subsid...

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Problems solved by technology

The above analysis methods are mainly considered from the perspective of the evolution and development process of karst ground subsidence, lack of analysis of the impact of engineering construction technology on karst ground subsidence, or only regard engineering construction activities as an inducing factor, and do not further analyze how engineering construction specifically affects karst ground The formation process of the collapse

Therefore, the existing analysis methods will lead to the analysis results, lack of specific impact mechanism of engineering construction on the subsidence, thus cannot accurately analyze the specific reasons for this kind of karst ground subsidence caused by the penetration of engineering construction, and reduce the analysis of the formation mechanism. accuracy and scientific

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