Radiation protection device for CT scanning rock joint shear tests

A technology of rock joints and CT scanning, applied in the field of geotechnical engineering, to achieve the effects of easy placement of samples and adjustment of mechanical parts, good transparency, and radiation prevention

Inactive Publication Date: 2019-07-05
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome a large number of radiation problems caused by the CT scanning rock t

Method used

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  • Radiation protection device for CT scanning rock joint shear tests
  • Radiation protection device for CT scanning rock joint shear tests
  • Radiation protection device for CT scanning rock joint shear tests

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and technical solutions.

[0026] refer to Figure 1 to Figure 4 , a radiation protection device system for CT scanning rock joint shear test, comprising a shear chamber loaded with rock joint samples, a host frame carrying the shear chamber, a loading device for applying confining pressure and shear force, and a Rotary device for rotating samples, CT scanning device for CT scanning, and high-lead glass protective device for preventing X-rays.

[0027] The rock joint test piece is placed in a hollow shearing chamber, the loading device extends from the top plate 2 into the frame of the main engine, and its action end is connected to the rotating washer 3, and the lower surface of the rotating washer 3 is further connected to the compression chamber. The block 15 is connected; the pressure block 15 passes through the outer wall of the shear chamb...

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Abstract

The invention belongs to the technical field of geotechnical engineering, and provides a radiation protection device for CT scanning rock joint shear tests. The radiation protection device comprises ashear chamber, a mainframe framework, a loading device, a rotating device, a CT scanning device and a lead-rich glass X-ray protection device. The shear chamber is a hollow cylindrical shear chamber,and a rock joint sample is positioned in the shear chamber. An action end of the loading device is connected with a rotating gasket which is connected with a pressure block, the pressure block penetrates the outer wall of the shear chamber to abut against the upper surface of one side and the lower surface of one side of the rock joint sample, and the other side of the rock joint sample is fixedin the shear chamber. The rotating device comprises a rotating mechanical supporting frame and a stepping motor, and the rotating mechanical supporting frame is in linkage with the shear chamber. TheCT scanning device comprises a radioactive source and a detector which are arranged on two opposite sides of the shear chamber. A piece of cylindrical high-lead glass surrounds the outside of the shear chamber to contain the CT scanning device inside. The radiation protection device effectively overcomes the radiation problem caused by CT scanning in the long-term testing process.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and relates to a rock shear test system, in particular to a radiation protection device for CT scan rock joint shear test. Background technique [0002] With the continuous advancement of many major geotechnical related projects in China, the safety issues caused by the instability and damage of jointed rock mass in specific engineering practice have attracted increasing attention. The shear characteristics of rock joints are an important basis for evaluating the stability of rock mass, so many scholars have done a lot of research on this, mainly focusing on indicators such as shear strength, and there are few studies on microscopic behavior. [0003] At present, with the development of equipment, more and more CT scans are introduced into the equipment, which can monitor the internal structure of the specimen in all directions and reveal the evolution law of cracks and ruptures ...

Claims

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Application Information

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IPC IPC(8): G01N3/02G01N3/06G01N3/24
CPCG01N3/02G01N3/06G01N3/24
Inventor 李迎春王文鹏
Owner DALIAN UNIV OF TECH
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