Upper-water-permeable lower-water-resistible type cap rock collapse cause experimental device

An experimental device and cap layer technology, which is applied in the field of experimental devices for the causes of collapse of upper and lower resistance type cap layers, can solve the problems of high cost, unintuitiveness, long time consumption, etc., and achieve the effects of low cost, intuitive phenomenon and convenient movement.
CN108877451AInactive Publication Date: 2018-11-23CHENGDU UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU UNIVERSITY OF TECHNOLOGY
Publication Date
2018-11-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an upper-water-permeable lower-water-resistible type cap rock collapse cause experimental device and belongs to the karst collapse research technical field. With the upper-water-permeable lower-water-resistible type cap rock collapse cause experimental device of the invention adopted, the whole process of the cause of the collapse of upper-water-permeable lower-water-resistible karst triggered by the rise and fall of groundwater level can be directly expressed, and the variation law of the intensity of pressure in a karst cave and the formation and expansion of a soilcave which are caused by the erosion of lower layer soil by groundwater can be visually showed, and related testing and parameter determination can be performed. Experimental data and experimental rules obtained by the device of the invention are very useful for analyzing and studying essential relationships between the groundwater level and karst collapse geological disasters, especially, a new technical means is provided for studying seepage deformation generated in the variation process of the groundwater level of the karst cave and karst collapse caused by the formation and expansion of the soil cave which are caused by the erosion of the lower layer soil; the development process of such karst collapse is reproduced; the formation mechanism of the karst collapse is revealed; and a certain reference value is provided for work such as the establishment of a karst collapse prevention, disaster reduction and early warning system.
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Description

technical field

[0001] The invention relates to an experimental device for the cause of collapse of an upper-permeable and lower-resistance caprock, which belongs to the technical field of karst collapse research. Background technique

[0002] Karst collapse refers to the phenomenon of collapse and failure of the overlying layer soil in the karst cave with openings in the karst development zone under the action of internal static force and external dynamic conditions. It has always been one of the hotly discussed topics. The area of ​​karst areas in my country is 3.63 million km 2 , accounting for more than 1 / 3 of the total land area of ​​the country, among which the karst area of ​​Yunnan, Guizhou, Sichuan, Guangxi, Hunan, Chongqing, Hubei, Guangdong and other provinces (cities, districts) reached 1.055 million km 2 , is one of the countries with the most developed karst in the world. The soluble rock mountainous areas in southern my country have deep valleys, abundant ra...

Claims

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