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Rock-fill material weathering instrument

A technology of rockfilling and weathering, applied in the field of weathering instruments, can solve the problems of inability to realize the function of the dry-wet cycle coupling effect, and achieve the effects of avoiding errors, reducing friction, and quickly controlling

Inactive Publication Date: 2012-12-05
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing related test instruments are still unable to realize the coupling function of the three factors of dry-wet cycle, temperature change and stress. In engineering practice, rockfill materials are subjected to the combined effects of various natural environmental factors under load.

Method used

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  • Rock-fill material weathering instrument
  • Rock-fill material weathering instrument
  • Rock-fill material weathering instrument

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Embodiment Construction

[0022] The structural principle and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] see figure 1 , a rockfill material weathering instrument, including a bracket base 2, a rolling bearing 3 is arranged on the upper part of the bracket base 2, a compression shear test box 1 is arranged on the rolling bearing 3, and the function of the rolling bearing is to reduce the gap between the compression shear test box 1 and the compression shear test box 1. friction, the U-shaped circulating sleeve 23 set in the compression shear test box 1, which provides a channel for circulating heat or cooling in the side wall of the sample for the high and low temperature liquid, and the upper part of the shear test box 1 is set in turn. There are permeable board 4, pressurizing cap 5, pressurizing head 6 and heat preservation cover 7, the inner side of heat preservation cover 7 is lined with heat preservat...

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Abstract

A rock-fill material weathering instrument comprises a rolling bearing, the rolling bearing is arranged at the upper part of a bracket seat and is provided with a compression shear test box, a water permeable plate, a pressurizing cap, a pressurizing head and a heat preservation cover in sequence, the top beam on the heat preservation cover is connected with the heat preservation cover after being connected to a displacement transducer; a leveling device, a lever, and load weights are arranged under the bracket seat, the shear test box is connected with a low temperature cooling circulating pump and a high temperature circulator; the compression shear test box is connected with a temperature-controlled cabinet and an air compressor; the compression shear test box is connected with a watertank, the sliding plate at the bottom part of the shear test box is connected with a horizontal loading motor, a horizontal load transducer on the beam is connected with the right part of the box, after completing cold-hot circulation and dry-wet circulation, the sample is sheared, and the horizontal load is detected. The invention has the characteristic of realizing coupling of three factors of dry-wet circulation, temperature change and stress.

Description

technical field [0001] The invention relates to a weathering instrument, in particular to a rockfill material weathering instrument. Background technique [0002] At present, a series of 300m-level ultra-high rockfill dams are being planned, designed and constructed in China, such as Nuozhadu (261.5m), Lianghekou (295m), Shuangjiangkou (314m), Gushui (305m) and Qizong ( 352m) and other projects. Due to the huge scale and far-reaching influence of these projects, fully ensuring their safety is the core issue of project construction. As the main dam material, the mechanical properties of rockfill materials will directly affect the overall safety of rockfill dams. [0003] Rockfill dams are generally always filled with locally mined rockfill materials. Materials with high strength, low compressibility, and long-term stable engineering properties are usually the first choice for dam rockfill materials. However, under many conditions, some rock-fill materials that are prone t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 孙逊孙国亮张丙印
Owner TSINGHUA UNIV
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