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Device and method for preparing rock pillar and filling body combined structure sample

A technology of combined structure and filling body, applied in the field of indoor rock mechanics test, can solve the problems of poor compatibility and single function, and achieve the effect of simple overall structure and flexible combination and use

Pending Publication Date: 2022-07-12
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The sample styles required for different types of tests (such as uniaxial, conventional triaxial, true triaxial, shear, multi-field coupling, etc.) are also different. Traditional sample preparation devices are generally used to prepare a specific The samples of different styles are designed and manufactured to meet the requirements of corresponding types of tests. They have single functions and poor compatibility. It is difficult to use a set of sample preparation devices to meet the two-way combination of rock pillars and filling bodies and the sample preparation requirements of different types of tests.

Method used

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  • Device and method for preparing rock pillar and filling body combined structure sample
  • Device and method for preparing rock pillar and filling body combined structure sample
  • Device and method for preparing rock pillar and filling body combined structure sample

Examples

Experimental program
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Effect test

Embodiment 1

[0054] like Figure 1-9 As shown, this embodiment provides a device for preparing a composite structural sample of rock column 17 and filling body 18, including a cage and at least one pouring module, each pouring module is used to be fixed on the retainer, and the pouring module It includes a forming carrier and at least one set of forming aids; the forming carrier is used for accommodating the rock column 17 sample, the filling body 18 and the forming aids; any set of forming aids is placed in the forming carrier to cooperate with the forming carrier to make the rock column 17 The column 17 sample and the packing body 18 can form a composite structure in the molding carrier, and each component auxiliary member is respectively used to form various composite structures.

[0055] The device for preparing the structural sample of the rock pillar 17 and the filling body 18 provided in this embodiment is provided with a forming carrier and a forming auxiliary used in conjunction w...

Embodiment 2

[0065] This embodiment provides a method for preparing a composite structural sample of a rock column 17 and a filling body 18, including the following steps:

[0066] Step 1, place the base 2 of the cage on a flat ground, install the connecting rod 3, the adjusting spring 12 and the pressure plate 1 in sequence, and preliminarily fix the pressure plate 1 through the adjusting nut 13;

[0067] Step 2, assemble the bottom plate 6 and the four side plates 7 of the molding carrier in the pouring module, and place them in the first groove 4 opened on the base 2 after the assembly is completed;

[0068] Step 3: According to the type of the composite structural sample of the rock column 17 and the filling body 18 to be prepared, determine whether it needs to be installed or whether the indenter 5 needs to be replaced, and determine whether it is necessary to install the forming aids. If it is necessary to install the forming aids, Then select the forming aids to be installed;

[00...

Embodiment 3

[0076] like Figure 1-10 As shown, in this embodiment, the base 2, the pressure plate 1 and the connecting rod 3 are all made of stainless steel, the nominal diameter of the connecting rod 3 is M16, the length of the connecting rod 3 is not less than 230 mm, and the connecting rod 3 is sleeved There is an adjusting spring 12 with a wire diameter of 2 mm, an outer diameter of 28 mm, and an unfolded length of 300 mm to ensure that the pressure plate 1 has sufficient vertical adjustment space, and one end of the connecting rod 3 is fastened to the rigid base with a fixing screw 2, the length of the rigid base 2 is 640 mm, the width is 120 mm, and the height is 20 mm. There are three first grooves 4 on the base 2, and the center spacing of the adjacent first grooves 4 is 170 mm. mm, the length of each first groove 4 is 110.4 mm, the depth is 5 mm, and to ensure that the bottom plate 6 can just be placed in the first groove 4, the length of the pressing plate 1 is 640 mm, the width...

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Abstract

The invention discloses a device and method for preparing a rock pillar and filling body combined structure sample, and relates to the technical field of indoor rock mechanics tests, the device comprises a holder and at least one pouring module, each pouring module is used for being fixedly arranged on the holder, and each pouring module comprises a forming carrier and at least one set of forming auxiliary parts; the forming carrier is used for accommodating the rock pillar sample, the filling body and the forming auxiliary part; any group of forming auxiliary parts are arranged in the forming carrier and matched with the forming carrier, so that the rock pillar sample and the filling body can form a combined structure in the forming carrier, and each group of forming auxiliary parts are respectively used for forming various combined structures, so that the requirements of bidirectional combination of the rock pillar and the filling body and sample preparation of different types of tests can be met.

Description

technical field [0001] The invention relates to the technical field of indoor rock mechanics test, in particular to a device and a method for preparing a rock column and a filling body combined structural sample. Background technique [0002] In the process of backfill mining, after the backfill slurry is transported to the goaf, under the action of underground temperature, humidity, stress and other environmental conditions, the ore pillar and the backfill will be cemented to form a common bearing structure with a certain integrity. The evolution law of the bearing mechanical properties of the combined structure with the backfill, the interaction mechanism between the backfill and the surrounding rock, etc. are very important for the research on the safety and stability of the backfill mining area. common themes. [0003] As a commonly used research method in the field of rock mechanics, laboratory tests can be carried out from the mechanical point of view by carrying out ...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/286G01N1/36G01N2001/366G01N2203/0298
Inventor 江飞飞周辉杨凡杰卢景景高阳胡明明涂洪亮张奎奎
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI