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Simple falling weight impact test confining pressure loading device and experimental method thereof

A technology of drop weight impact test and loading device, which is applied in the direction of testing material strength with one-time impact force, measuring device, and testing material strength with stable tension/pressure, which can solve the problem of complex structure, high price and confining pressure application device Large volume and other issues, to achieve the effect of low cost, easy maintenance, and convenient disassembly

Active Publication Date: 2019-11-22
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a simple confining pressure loading device for drop weight impact test. , and can be better applied to low stress conditions

Method used

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  • Simple falling weight impact test confining pressure loading device and experimental method thereof
  • Simple falling weight impact test confining pressure loading device and experimental method thereof
  • Simple falling weight impact test confining pressure loading device and experimental method thereof

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Embodiment Construction

[0045] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiment is one embodiment of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer" etc. are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and opera...

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Abstract

The invention relates to the field of rock dynamics experiments, in particular to a simple falling weight impact test confining pressure loading device and an experimental method thereof, and aims tosolve the problem that a test result cannot truly reflect rock dynamics characteristics due to the fact that confining pressure is difficult to apply in the rock falling weight impact test and a three-way stress state of a rock cannot be truly simulated. The experimental device comprises an x-direction confining pressure loading device, a y-direction confining pressure loading device and a z-direction confining pressure loading device, confining pressure is applied to a rock sample in the x direction and the y direction through elastic deformation of springs, and confining pressure is appliedto the rock sample in the z direction through a hydraulic jack. According to the invention, accurate, uniform and non-interfering confining pressure can be generated in the x direction, the y direction and the z direction, the real stress working condition of an engineering rock mass can be accurately simulated, and meanwhile, a sample is convenient to disassemble and easy to maintain, the rock dynamics experiment precision can be effectively improved, and the experiment scale is reduced.

Description

technical field [0001] The invention relates to the field of rock dynamics experiments, in particular to a simple confining pressure loading device and an experiment method for drop hammer impact tests. Background technique [0002] Engineering rock mass is often subjected to dynamic loads in reality, and the study of dynamic load characteristics of rocks is of great significance. At present, SHPB and drop weight impact testing machine are mostly used for research on the dynamic characteristics of engineering rock mass, among which the simple structure of drop weight impact testing machine has been widely used. However, when the engineering rock mass is disturbed by dynamic load, it is in a three-dimensional force state. However, most rock drop hammer impact tests do not apply confining pressure, which fails to reflect the real stress situation, and the obtained dynamic test results are different from their real characteristics. [0003] Based on the above, in order to obt...

Claims

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Application Information

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IPC IPC(8): G01N3/30G01N3/14G01N3/12
CPCG01N3/30G01N3/14G01N3/12G01N2203/0026G01N2203/0039G01N2203/0035G01N2203/0048G01N2203/0256
Inventor 胡建华丁啸天罗周全温观平匡也周坦
Owner CENT SOUTH UNIV
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