Device and method for testing large deformation interaction of impermeable wall and core wall

Abstract

The invention provides a device and method for testing large deformation interaction of an impermeable wall and a core wall; one side box wall of a model box is connected with an incomplete side limiting plate parallel to the side box wall through a spring, and displacement sensors for measuring the translation amount of the incomplete side limiting plate are further arranged between the incomplete side limiting plates and the model box; a model cavity is defined by the incomplete side limiting plate and the other side box walls, a concrete impermeable wall vertically arranged in the center, covering layer filling soil arranged on the lower section of the concrete impermeable wall in a filling mode and core wall filling soil arranged on the upper section of the concrete impermeable wall in a filling and burying mode are arranged in the model cavity, distributed optical fiber sensors are preset on the wall face of the concrete impermeable wall, and an earth pressure box is arranged at the joint of the core wall filling soil and the concrete impermeable wall. Real-time accurate measurement and visual dynamic monitoring of deformation and stress in the large deformation process of the core wall and the impermeable wall are achieved, and a basis is provided for revealing the interaction mechanism of large deformation of the core wall and the impermeable wall.

Description

technical field [0001] The invention relates to the field of hydraulic structure test technology research, in particular to an anti-seepage wall-core wall large deformation interaction test device and method. Background technique [0002] Hydropower is a clean and low-carbon renewable energy with mature technology and flexible operation. The western region of my country is rich in hydropower resources, accounting for more than 80% of the country's reserves, but the degree of development is relatively low. In order to alleviate the pressure of my country's growing power demand and promote the economic development of the western region, it has become a major national strategic demand to build high dams and large reservoirs with good regulation performance in the west. However, the geological conditions in western my country are complex, and most of the riverbeds of rivers have overburden, which is an unavoidable problem for dam construction. Building a dam directly on the ov...

AI Technical Summary

Problems solved by technology

Under the force of the dam body, the anti-seepage wall and the core wall with widely different material properties have large uneven settlements at the joints, causing strong soil-structure interaction, which puts the joints in an unfavorable stress state, thus affecting the large Dam safety a threat

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