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Testing apparatus for determining rockfall recovery coefficient by considering contact relation and testing method

A technology of restitution coefficient and contact relationship, which is applied in the field of geotechnical engineering, can solve the problem of three-dimensional rockfall movement law prediction that has not been solved well

Active Publication Date: 2018-12-07
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0005] In recent years, scholars at home and abroad have carried out a lot of fruitful research work on rockfall disasters. However, rockfall is a dynamic problem in which rocks and slopes repeatedly contact and collide with each other. Due to the complexity of the three-dimensional contact problem, the three-dimensional rockfall movement law prediction problem It is still not well resolved, and the determination of the existing rockfall restitution coefficient is not related to the contact relationship between rockfall and slope

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  • Testing apparatus for determining rockfall recovery coefficient by considering contact relation and testing method
  • Testing apparatus for determining rockfall recovery coefficient by considering contact relation and testing method
  • Testing apparatus for determining rockfall recovery coefficient by considering contact relation and testing method

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[0027] The structure and features of the present invention will be described in detail below in conjunction with the drawings and embodiments. It should be noted that various modifications can be made to the embodiments disclosed herein, therefore, the embodiments disclosed in the specification should not be regarded as limitations on the present invention, but only as examples of embodiments, and its purpose is to make the present invention The features of the invention are self-evident.

[0028] Such as figure 1 As shown, the test device for determining the coefficient of restitution of rockfall considering the contact relationship provided by the present invention includes a gantry support 1 , a movable fixed frame 2 , a rockfall releaser 3 , a rockfall sample 4 and a slope simulation test bench 5 .

[0029] The movable fixed frame 2 is arranged on the crossbeam of the gantry support 1, and can move along the crossbeam. The movable fixed frame 2 lifts the rockfall release...

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Abstract

The invention discloses a testing apparatus for determining a rockfall recovery coefficient by considering a contact relation. The testing apparatus comprises a portal frame, a movable fixing rack, arockfall releaser, a rockfall sample and a slope simulation test bed. The movable fixing rack is arranged on a beam of the portal frame; the rockfall releaser is lifted by two steel wire ropes, and the rockfall sample is lifted by the rockfall releaser. The slope simulation test bed is arranged below the portal frame and comprises a slope simulation box; a slope simulation material and multiple sensors are contained in the slope simulation box; slopes of different shapes, different directions and different gradients can be simulated by slope simulation materials. When the rockfall recovery coefficient in different contact relations is determined, different contact relations between the rockfall sample and the simulated slope are simulated by the testing apparatus, such as point-surface contact, edge surface contact, surface-to-surface contact, point-edge contact, edge-edge contact, surface-edge contact, point-point contact, edge-point contact and surface-point contact; then, the rockfall recovery coefficient in different contact relations is determined.

Description

technical field [0001] The invention relates to a test device and a test method for measuring the recovery coefficient of falling rocks in consideration of the contact relationship. The invention belongs to the technical field of geotechnical engineering. Background technique [0002] Rockfall means that the rock mass on the surface of the slope is cut by joints and fissures, and is separated from the slope under the action of gravity or other external forces. After a series of movements such as falling, collision, rebound, rolling, sliding, etc. The geological disaster that stopped is one of the common geological disasters in mountainous areas. [0003] Although the scale of rockfalls is small, due to frequent occurrence, high suddenness, strong randomness, and large impact range, the hazards of rockfall disasters are similar to those caused by large-scale landslide disasters, and the number of deaths caused by rockfall disasters has been compared with Other forms of slop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 汪小刚林兴超王玉杰赵宇飞冷合勤朱贵娜刘立鹏段庆伟曹瑞琅
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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