Test device and method for simulating seepage condition of landslide of earth-rock dam

Abstract

The invention discloses a test device and method for simulating the seepage condition of the landslide of an earth-rock dam. The test device comprises a test chamber, a water inlet system, a flow leakage simulating system, a measuring system and an earth-rock dam model, wherein the earth-rock dam model is located in the test chamber; the water inlet system is located at the upper part of the left side of the upstream side of the test chamber, and is used for importing experimental water; the flow leakage simulating system is located at the bottom of the test chamber, and is used for simulating a flow leakage process under various working conditions; and the measuring system comprises a control box, an upstream water level gauge, a downstream water level gauge, an electric survey electrode, an osmometer, a connecting line, a control box platform and a water level gauge platform, and is used for realizing real-time measurement of various monitoring data. According to the test device disclosed by the invention, the landslide process of a side slope under the condition that the water level is suddenly changed can be truly simulated; dynamic monitoring of the change of the seepage condition is realized; and dynamic space seepage condition information is provided for the research on the change of instantaneous seepage conditions of the landslide under the condition that the water level is suddenly changed.

Description

technical field [0001] The invention relates to the field of simulated experiments on seepage behavior of earth-rock dams, in particular to the field of real-time simulation testing and test monitoring of seepage behavior of landslides on banks upstream of earth-rock dams induced by sudden drops in reservoir water levels. Background technique [0002] my country has more than 90,000 reservoir dams, most of which are earth-rock dams. These reservoir dams have played an important role in preventing flood disasters and ensuring the development of national economic construction. However, due to various reasons, under the comprehensive influence of external environmental factors and its own risk of disease, there are risks of seepage damage, landslides, and even dam failures. In recent years, extreme weather phenomena and frequent earthquake disasters have increased the risk of landslides in earth-rockfill dams. Sudden changes in the reservoir water level will disturb the origin...

AI Technical Summary

Problems solved by technology

[0003] Since the reservoir water level drop process is a process in which the seepage behavior of the dam space changes dynamically with the gradual change of the permeability coefficient, and the change process of different materials is different. Through conventional numerical analysis methods, a large number of measurement parameter assumptions are required, which is difficult to understand. The actual change process of seepage behavior, but through measurement methods such as piezometers and piezometers, a large number of monitoring instruments need to be arranged, and at the same time, the original soil structure will be destroyed and the seepage behavior will be affected.

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