Rock mass drilling and shearing elastic modulus instrument

A technology of elastic modulus and rock mass, which is applied in the direction of testing material strength by applying stable shear force and testing material strength by applying stable tension/pressure, which can solve the problem of single function and achieve good economic benefits and save energy. Effects of experimental funding, macroeconomics, and socioeconomic value

Active Publication Date: 2013-05-22
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these devices are only used to test the elastic modulus of rock mass by using boreholes. They have a single function and do not use limited engineering exploration boreholes to dig deep into rock mass engineering characteristic parameters.

Method used

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  • Rock mass drilling and shearing elastic modulus instrument
  • Rock mass drilling and shearing elastic modulus instrument
  • Rock mass drilling and shearing elastic modulus instrument

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Experimental program
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Embodiment Construction

[0026] Depend on Figure 1 to Figure 5 As shown, a rock mass drilling shear elastic modulus instrument is mainly composed of a plug rod port 1, a sleeve rod 2, an upper disc cutter 3, a rubber bag 4 and a lower disc cutter 5, wherein: the overall structure is a long cylinder; A rubber bag 4 for applying normal stress is arranged between the upper disc cutter 3 and the lower disc cutter 5 .

[0027] The upper disc cutter 3 is composed of an upper disc cutter cover plate 31, a piston disc cutter 32, a hydraulic housing 33, a central column 34, a matching square column 35 and a powerful spring 36, and four matching square columns 35 are used to fix the upper disc cutter 3 on the rock. The position on the body drilling shear elastometer, the upper disc cutter cover plate 31 is fixed on the hydraulic housing 33 to ensure that the four piston disc cutters 32 can protrude freely without being blocked by cuttings, and in addition, it is fixed on the center column The vigorous spring ...

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Abstract

The invention relates to a rock mass drilling and shearing elastic modulus instrument which mainly comprises a stopper rod port (1), a sleeve rod (2), an upper disc knife (3), a rubber bag (4) and a lower disc knife (5); and the whole structure of the rock mass drilling and shearing elastic modulus instrument is shaped like a long cylinder body. A hole wall rock mass shear test is carried out on different drilling positions under different positive stresses, and a destructive curve can be drawn by a rock mass shear destruction test structure under the different positive stresses, so that rock mass shearing-resistant mild parameters can be confirmed. The rock mass drilling and shearing elastic modulus instrument is simple in structure, low in manufacturing cost, easy to use and simple and easy to maintain and repair.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to engineering equipment capable of determining the shear strength and deformation modulus of rock mass during the construction of geotechnical engineering. Background technique [0002] In geotechnical engineering construction, in-situ test is an important means to obtain reliable deformation and strength parameters of rock and soil mass. However, conventional rock mass on-site shear and deformation tests will consume a lot of manpower and material resources. Therefore, the number of tests is limited, and it is often difficult to comprehensively evaluate the engineering mechanical properties of rock mass in geotechnical engineering. [0003] The development history of the borehole shear test is very short. In 1976, Winland of the United States first proposed it, and subsequently many researchers conducted a lot of research on this new test method. Currently, it is widely u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24G01N3/10
Inventor 汪小刚赵宇飞贾志欣王玉杰段庆伟孙平林兴超任爱武刘立鹏李新强
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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