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A centrifugal model test device and method for simulating concrete face dam failure

A concrete face dam and centrifugal model test technology, applied in the direction of measuring devices, testing wear resistance, instruments, etc., can solve problems such as inability to study, different failure mechanisms, etc.

Active Publication Date: 2021-09-10
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since concrete face dams are different from earth-rock dams, core wall dams and other dam types in structure, material, and failure mode, and their quality, density, and shape are also significantly different, so their failure mechanisms are completely different. During the test, The simulation method of other dam types cannot be used to study its failure mechanism

Method used

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  • A centrifugal model test device and method for simulating concrete face dam failure
  • A centrifugal model test device and method for simulating concrete face dam failure
  • A centrifugal model test device and method for simulating concrete face dam failure

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Effect test

Embodiment 1

[0040] Such as Figure 1-3 , 5-6, a centrifugal model test device for simulating concrete face dam failure, including a model box 4 made of aluminum alloy, one side wall of the model box is provided with a water inlet 2, and the other side wall of the model box is opposite to the water inlet. A rectangular weir 1 for overflow is provided on the side wall, and an indicator light panel 6 is arranged on the side wall of the model box above the rectangular weir; a rockfill material is arranged in the model box, and the upstream side of the rockfill material is connected to the gypsum board 5, and the downstream side of the gypsum board According to the depth direction of the face plate dam, multiple photoresistors 7 are buried in layers in the rockfill material. The photoresistor model is LXD3526. The resistor is electrically connected with an indicator light on the indicator panel;

[0041] The model box above the gypsum board is equipped with a high-speed high-definition camera...

Embodiment 2

[0046] A centrifugal model test method for the failure of a concrete face dam, mainly comprising the following steps:

[0047] Step 1: Survey and measure the parameters of the rockfill and face material of the concrete face dam on site, and configure the gypsum board and rock fill materials with similar physical and mechanical properties to the actual physical and mechanical properties of the on-site face face dam. The rockfill material for the model is selected from the original rockfill material on site, which is crushed and sieved to make the centrifugal model.

[0048] The slope ratio and hydrological data of the concrete face dam on site were sampled and arranged to make the centrifuge model the same as the actual situation as much as possible. Multiple groups of undisturbed samples were selected for gradation tests at different locations on multiple exploration routes for rockfill materials for face-face dams. The main material of the rockfill material is stone, the par...

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Abstract

The invention discloses a centrifugal model test device and method for simulating the failure of a concrete face dam. A rectangular weir for overflow is provided on one side wall of the model box, and an indicator light panel is arranged on the side wall of the model box above the rectangular weir. ; The rockfill material is arranged in the model box, the upstream side of the rockfill material is connected to the gypsum board, and a plurality of photoresistors are layered and buried in the rockfill material downstream of the gypsum board, and each photoresistor is electrically connected with an indicator light on the indicator light panel; High-speed high-definition cameras for observing gypsum boards, rockfill materials and indicator panels are respectively installed in the boxes. The invention can realize the dam break test of the concrete face dam, and the scouring damage of the dam break water flow to the rockfill material is shown through the visual light signal, and the scouring path and range of the water flow can be inferred more conveniently through the lighting sequence of the indicator lights. It has important reference significance for the study of dam failure mechanism.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering devices, in particular to a centrifugal model test device and method for simulating the failure of a concrete face dam. Background technique [0002] Concrete face dam is a kind of earth-rock dam mainly composed of riverbed sand and gravel. The upstream is anti-seepaged by reinforced concrete face, plinth and various joint water-stop structures. After compaction, it has high strength and deformation modulus. Under the scouring of the overflowing water flow, if the dam breaks and damages, it will pose a serious threat to the lives and properties of the downstream people. Therefore, it is of great significance to study the failure mechanism of concrete dams for the prediction of dam failure disasters of concrete dams, the early warning of dam failures and the formulation of emergency plans for concrete dams. [0003] Since concrete face dams are different from earth-rock dams, core...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/56G01N3/02G01N21/84
CPCG01N3/02G01N3/567G01N21/84G01N2021/8411
Inventor 钟启明陈生水顾行文杨蒙单熠博任国峰傅中志吉恩跃阎志坤陈小康
Owner NANJING HYDRAULIC RES INST
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