Device and method for testing influence of water level fluctuations on stability of talus slope containing underlying ice layer

A technology of water level fluctuation and test device, which is applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, using optical devices, etc., which can solve the problems of unconsidered, few working conditions, and inability to simulate the northern region.

Inactive Publication Date: 2017-08-11
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a physical model test model and test method for the deformation of the underlying ice layer rock pile slope by reservoir water level fluctuations, which can improve the existing physical simulation experiments that consider few working conditions and cannot simulate the northern region. Underlying ice landslides are also not suitable for carrying out model tests in winter in the northern region. Issues such as the impact of reservoir-type rock pile slopes including the local melting of the underlying ice layer on rock pile slopes caused by reservoir water storage are not considered, and it is easy to operate. It is highly targeted, can accurately measure the deformation and soil pressure changes of rock pile slopes, and can directly observe the slope deformation, damage and ice melting state, etc. A feasible device and method is of great significance to guide the follow-up rock pile engineering treatment

Method used

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  • Device and method for testing influence of water level fluctuations on stability of talus slope containing underlying ice layer
  • Device and method for testing influence of water level fluctuations on stability of talus slope containing underlying ice layer
  • Device and method for testing influence of water level fluctuations on stability of talus slope containing underlying ice layer

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Embodiment 1

[0075] In this example, taking the rock pile slope near the entrance of Daqian Shiling Tunnel of Huanren County, Benxi City, Liaoning Province as an example, through field research and surveying, the slope direction of the rock pile slope is NE30°, and the slope length 800-1000m, the elevation of the foot of the slope is about 410m, and the slope fluctuates slightly along the uphill direction, generally changing between 26-38°.

[0076]In this embodiment, through geotechnical engineering investigation, from the top of the slope to the foot of the slope, the formations are rock piles, collapsible deposits, alluvial deposits, and bedrock. The rock pile is formed by the accumulation of quartz sandstone and pebble-bearing quartz sandstone blocks. The diameter of the blocks is mostly between 0.2-1.5m, and the larger one is 2-3m. The accretion is composed of crushed rocks interbedded with soil; the alluvial deposits are rock-cobble gravel interbedded with sandy gravel layer, the blo...

Embodiment 2

[0096] In this embodiment, a physical model test method for the deformation of rock pile slopes containing 15 underlying ice layers caused by reservoir water level fluctuations is disclosed, including the following steps:

[0097] Step 1, determine the similarity ratio of the model test: determine the similarity ratio of the model test according to the field geological survey and geological exploration data; wherein, including grasping the engineering geological conditions of the rock pile slope and the spatial distribution of the underlying ice layer 15, according to the field Research, investigation, surveying and mapping, to grasp the geological characteristics and spatial distribution of each layer of the rock pile slope, especially to find out the position and thickness of the ice layer 15 underlying in the slope body.

[0098] Step 2, pouring the concrete bedrock 7: pouring the concrete bedrock 7 in the transparent model test chamber 1 to simulate the rock pile slope bedr...

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Abstract

The invention relates to a physical model test model and test method of reservoir water level fluctuations on deformation of talus slope containing an underlying ice layer. The physical model test model comprises a transparent model test box with an opening at the top, wherein concrete bed rock is arranged in the transparent model test box, a faucet is arranged at the horizontal lowest end of the upper surface of the concrete bed rock, a talus slope model is arranged on the upper surface of the concrete bed rock, a plurality of electric heating pieces and a plurality of refrigerating sheets are arranged between the talus slope model and the concrete bed rock, a loading device and soil pressure boxes are arranged at the horizontal highest end of the concrete bed rock, multiple dial gages are arranged on the upper surface of the talus slope model, and a high-speed camera is arranged outside the transparent model test box. Since water level fluctuations can influence the talus slope containing the underlying ice layer, a simulation test is performed by arranging the concrete bed rock and the talus slope model in the transparent model test box through the soil pressure boxes and the dial gages used for measurement.

Description

technical field [0001] The invention relates to a physical model test model and test method for the deformation of the underlying ice-bed rock pile slope caused by reservoir water level fluctuations, belonging to the fields of civil engineering and geological engineering, and in particular to the stability of the underlying ice-layer rock pile slope caused by reservoir water level fluctuations This test method is applicable to the stability analysis and research of reservoir-type rock pile slopes with underlying ice layers in Liaoning and other northeast regions of my country. Background technique [0002] Rock piles refer to the loose accumulations formed by the instability of steep rock slopes, resulting in landslides and spalling, forming rock blocks and debris of different sizes, which are transported and accumulated under the action of natural forces. Rock piles have the characteristics of developed voids, loose structures, and poor stability. They are usually in a criti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N3/08G01B11/16G01B5/02G01C5/00G01D21/02G09B25/00
CPCG09B25/00G01B5/02G01B11/16G01C5/00G01D21/02G01N3/08G01N33/24
Inventor 邓清禄朱大鹏韩朝杨敏金发良鲍雪银杨志国曲宏略徐凯伍康林
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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