Rockfill scouring simulation experiment device and experimental data acquisition method

Abstract

The invention discloses a rockfill scouring simulation experiment device and an experimental data acquisition method. The device comprises a glass water tank, a water circulation unit, a water control unit, a rockfill testing unit, a data acquisition unit, a sample acquisition unit and a central dataset unit, wherein the water circulation unit is communicated with the glass water tank; the water control unit is arranged in a water outlet of the water circulation unit and is used for accurately controlling the flow and the water level; the rockfill testing unit is arranged at a downstream end of the glass water tank; a computer control system is connected with the water control unit, the data acquisition unit, the sample acquisition unit and the central dataset unit; the data acquisition unit is used for acquiring experimental parameters; the sample acquisition unit is used for acquiring relevant samples of the rockfill, and the acquired data are stored in the central dataset unit. According to the rockfill scouring simulation experiment device, the discrimination of the rockfill dam burst development path and mechanism is facilitated, and the risk development mechanism is determined, so that the basic evidence is provided for safety assessment of engineering.

Description

technical field [0001] The invention belongs to the technical field of hydraulic hydraulics and rock-soil mechanics characteristic testing, and in particular relates to a rockfill body erosion simulation experiment device and an experiment data collection method. Background technique [0002] Rockfill dams have been widely used in rivers with large flood-dry flow ratios and large flood-dry water level fluctuations in mountainous areas because of their technical safety, economical rationality, environmental friendliness, convenient construction, and easy maintenance. Streaming is increasingly used. According to engineering practice and model experiment observations, most of the failures of the downstream slope protection of the temporary section under water-passing conditions start with the local erosion damage of the downstream slope rocks. The erosion damage not only directly endangers the stability of the rockfill structure, but also increases the subsequent The workl...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the relevant model experimental devices at home and abroad are used to investigate the erosion characteristics of flat-bottomed face protection in the downstream area of ​​hydraulic structures or long river channel sediment, and there is no direct measurement of relevant hydraulic indicators and erosion forms under certain erosion conditions when rockfill bodies pass through water. , scouring size, gradation and distribution of destabilized rock particles

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