Push type landslide physical model test system and push type landslide physical model test method under action of reservoir water

Abstract

The invention relates to a push type landslide physical model test system and a push type landslide physical model test method under action of reservoir water. The push type landslide physical model test system comprises a U-shaped groove, and one end of the U-shaped groove is provided with a baffle plate in a sealed manner. A simulated slide bed is disposed in the U-shaped groove, and is provided with a simulated landslide body. The slope surface of the simulated landslide body faces the baffle plate. The U-shaped groove, the baffle plate, the simulated slide bed, and the simulated landslide body are used to form a water reservoir in an encircled manner, and the water reservoir is connected with a water inlet device and a water outlet device. A thrust loading device is provided, and is disposed on the trailing edge of the simulated landslide body. The landslide physical model test system used for reservoir water cyclical fluctuation downward push type landslide evolution process and deformation failure mode research is provided. Based on two actual conditions, namely reservoir water level and rainfall, the reservoir water level fluctuation and the application of the landslide trailing edge thrust are reasonably matched with each other, and then actual landslide external conditions are simulated. The test system has advantages of simple structure, convenient operation, economy, practicability, and convenient popularization.

Description

technical field [0001] The invention relates to the technical field of geological disaster model tests, in particular to a push-type landslide physical model test system and method under the action of reservoir water. Background technique [0002] As a very destructive geological disaster, landslides will cause huge damage to people's lives and property and national infrastructure, such as railways, highways, and waterways, once they occur. Landslide is a kind of geological disaster with a development and evolution process. It refers to the soil or rock mass on the slope, which is affected by factors such as river erosion, groundwater activity, rainwater soaking, earthquake and artificial slope cutting. It is a natural phenomenon that the weak surface or belt of the slope slides down the slope as a whole or scatteredly. The moving soil or rock mass is called a landslide mass, and the unmoved soil or rock mass below the landslide mass is called a slide bed. According to the...

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Problems solved by technology

[0004] At present, indoor physical model tests have become an important means to study the evolution process and deformation failure mode of landslides. Scholars at home and abroad have conducted various researches on landslides through indoor physical model tests, and have made some progress. However, the current landslide physical model test device or method still has certain limitations:

[0005] (1) Existing landslide physical model test devices or methods seldom involve the evolution process and deformation failure mode of landslides with periodic fluctuations in reservoir water level, and periodic fluctuations in reservoir water levels have an important impact on landslides. Evolution process and deformation failure mode are necessary

[0006] (2) The existing landslide physical model test devices or methods do not consider the reasonable matching relationship between the landslide model trailing edge thrust and the front edge reservoir water level fluctuations, but to match the two reasonably realistically is the key to the study of reservoir water level periodicity The foundation and key of evolution process and deformation and failure mode of push landslide under fluctuation

[0007] (3) The existing landslide physical model test device or method is very complicated or expensive to operate, and cannot simplify the test device or reduce economic costs under the premise of achieving the purpose of the test and obtaining effective test results, so that the test device or method can be used. Simple and cost-effective

[0008] (4) Existing landslide physical model test devices or methods are seldom based on actual conditions, such as specific rainstorm periods and specific ups and downs of reservoir water levels, etc., to simulate the external conditions of landslides, which cannot achieve the purpose of truly simulating the external conditions of landslides

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