Experimental device for monitoring whole process of instability disaster of discrete fill dam

Abstract

The invention relates to an experimental device for monitoring the whole process of an instability disaster of a discrete fill dam, and belongs to the technical field of geotechnical engineering. Thedevice comprises a water supply device, a rainfall simulation device, a support device and a dam body damage and dam break debris flow motion experiment device. The water supply device provides required water for experiments, the rainfall simulation device is used for simulating rainfall working conditions, the support device is used for supporting the rainfall simulation device and mounting ultrasonic equipment, and the dam body damage and dam break debris flow movement experiment device is mainly used for completing dam body damage and dam break debris flow (flood) movement process research.According to the invention, the evolution process from dam body damage to dam break debris flow (flood) of a tailing dam or a homogeneous earth dam in a downstream river channel can be simulated andresearched under the conditions of rainfall, flood overtopping and piping, parameters such as dam body damage degree, dam body pore water pressure, dam body deformation, dam break debris flow (flood)impact force, flow speed and submerging height are recorded through automatic monitoring equipment, and research on dam body damage and disaster-causing processes is achieved.

Description

technical field [0001] The invention relates to an experimental device for monitoring the whole process of disaster-causing instability of a bulk accumulation dam, which is mainly used for experimental research on the damage process of tailings dams or homogeneous earth dams and the disaster-causing process of dam failure debris flows (floods), and belongs to geotechnical engineering technology field. Background technique [0002] At present, the research on dam failure can be divided into two aspects: (1) the evolution process of dam failure debris flow (flood) in the downstream valley; (2) the problem of dam self-damage failure process. Relevant research results and practical engineering experience show that effective dam failure early warning mechanisms and disaster prevention and mitigation programs can significantly reduce casualties and property losses. On the other hand, rapid and accurate prediction of the evolution process of dam failure debris flow (flood) can pro...

AI Technical Summary

Problems solved by technology

It is a continuous disaster-causing process from the destruction of the dam body to the formation of the debris flow (flood) of the dam collapse. The current experimental research usually separates the two processes into separate studies, which is not consistent with the actual dam collapse process. There are still deficiencies and areas that need improvement.

In addition, although the dam-break geotechnical experiment under large-scale conditions can fully simulate and reproduce the dam failure and debris flow (flood) disaster-causing process during the dam-break process, the dam-break geotechnical experiment under large-scale conditions cannot restore the dam body. The engineering operation in the process of the original terrain is trivial, the manpower and material resources are huge, and it is difficult to carry out a large number of repeated experiments to ensure the efficiency of the experiment

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