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Osmotic pressure and static pressure coupled electromagnetic loading triaxial SHPB device and testing method

An osmotic pressure and electromagnetic technology, applied in the field of rock dynamics research, can solve problems such as inability to carry out, and achieve the effect of improving effectiveness and reliability

Pending Publication Date: 2019-11-12
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the existing dynamic test device cannot carry out the research on rock dynamic response and fracture mechanism under the condition of deep high ground stress, high osmotic water pressure and strong engineering disturbance, the present invention proposes a three-axis SHPB with osmotic pressure and static coupling electromagnetic loading Device and test method, the device is based on the traditional one-dimensional SHPB, the original equipment is innovatively improved, and the osmotic pressure real-time loading and control system is introduced, which solves the problem that the existing dynamic test device cannot carry out close to the real environment of deep rock mass Technical Difficulties in the Study of Rock Mass Dynamic Response Under the Coupling Effects of High Permeable Water Pressure, Static Pressure and Dynamic Disturbance

Method used

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  • Osmotic pressure and static pressure coupled electromagnetic loading triaxial SHPB device and testing method
  • Osmotic pressure and static pressure coupled electromagnetic loading triaxial SHPB device and testing method
  • Osmotic pressure and static pressure coupled electromagnetic loading triaxial SHPB device and testing method

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Embodiment approach 1

[0053] figure 1 It is the three-dimensional diagram of the three-axis SHPB device coupled with osmotic pressure and static pressure electromagnetic loading. The test device is placed on the support platform 1, and mainly consists of an electromagnetic pulse emission system, an axial pressure servo control loading system, a confining pressure servo control loading system, and an osmotic pressure loading system. , rod system and data monitoring and acquisition system. The test system is centered on the test sample 26 (such as image 3shown), arranged symmetrically. Among them, the left and right axially loaded fixed baffles 2 and 11 are respectively fixed on the left and right ends of the support platform 1, and the center and surrounding areas are respectively provided with large round holes and small round holes, and the size here is based on the center and surrounding areas. The size of the circular hole is larger and smaller than that obtained, that is, the diameter of the...

Embodiment approach 2

[0064] Best practice 2: Dynamic impact test research on fully saturated coal rock under osmotic pressure and static pressure coupled triaxial loading

[0065] The relevant equipment of the test system is as follows: Figure 1-3The connection mode shown is placed on the support platform 1 whose length, width and height are 6m, 0.6m and 1m respectively. Center, arrange the test system on the support platform 1 in a left-right symmetrical manner, first place the left side axially loaded fixed baffle 2 with a width, height and thickness of 600mm, 400mm and 50mm respectively on the left end of the support platform 1, where the diameter The left axial pressure loading oil cylinder 3 with the lengths of 250mm and 200mm respectively passes through the central large circular hole of the left axial pressure loading fixed baffle plate 2, and is welded with it to form an integral structure. The diameter of the left axial pressure loading piston 4 is 100mm , the stroke length of the pisto...

Embodiment approach 3

[0070] Best Implementation Mode 3: Dynamic Impact Test Research on Shale with Central Cylindrical Hole Under Static Pressure and Hole Pressure Coupled Triaxial Loading

[0071] The relevant equipment of the test system is as follows: Figure 1-3 The connection shown is placed on a support platform 1 with a length, width and height of 6m, 0.6m and 1m respectively. The connection relationship and related functions between the various devices are specifically described as follows: to test shale (i.e. test sample 26) ( Contains a cylindrical hole 28 with a central diameter of 8 mm, such as Figure 12-15) as the center, the test system is arranged on the support platform 1 in a left-right symmetrical manner, and the left side axially loaded fixed baffle 2 with a width, height and thickness of 600mm, 400mm and 50mm respectively is placed on the support platform 1 At the left end, the left axial pressure loading cylinder 3 with a diameter and length of 250 mm and 200 mm respectively...

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Abstract

The invention provides an osmotic pressure and static pressure coupled electromagnetic loading triaxial SHPB device and a testing method. The osmotic pressure and static pressure coupled electromagnetic loading triaxial SHPB device comprises an electromagnetic pulse emission system, an axial pressure servo control loading system, a confining pressure servo control loading system, an osmotic pressure loading system, a rod part system and a data monitoring and collecting system. On the basis of a traditional one-dimensional SHPB, original equipment is improved innovatively, and an osmotic pressure real-time loading and controlling system is introduced, so that the technical problem that an existing dynamics testing device cannot carry out rock mass dynamics response research under the high-permeability water pressure, static pressure and dynamic disturbance coupled action of a real environment close to deep rock mass is solved.

Description

technical field [0001] The invention belongs to the field of rock dynamics research. More specifically, it relates to a three-axis SHPB device and test method for osmotic pressure and static pressure coupling electromagnetic loading considering rock dynamic characteristics and fracture mechanism research in a deep underground real multi-field coupling environment. SHPB: Hopkinson Rod. Background technique [0002] With the continuous depletion of shallow mineral resources, resource and energy mining is gradually shifting to deep development, and deep mining will become normal in the future. However, after deep mining, the environment of the rock mass becomes very complicated. The deep in-situ rock mass not only bears high-amplitude three-dimensional stress, but also often bears high seepage water pressure and strong engineering disturbances (such as explosion waves, Earthquakes and rock bursts, etc.), resulting in frequent engineering disasters (such as rock bursts, rock b...

Claims

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Application Information

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IPC IPC(8): G01N3/317G01N3/12
CPCG01N3/317G01N3/12G01N2203/001G01N2203/0019G01N2203/0048G01N2203/005G01N2203/0256G01N2203/0676G01N2203/0224G01N2203/0232G01N2203/0069
Inventor 周韬翟天琦谢和平赵坚朱建波高明忠李存宝廖志毅张凯
Owner SHENZHEN UNIV