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Mold for rock-like sample containing complex joints and sample preparing method

A technology of rock samples and joints, applied in the field of rock mechanics and rock engineering, can solve the problems of cumbersome methods, inconvenient rotation operation, limited number of inclined guide chute, etc., achieve simple mold structure, improve production efficiency, and convenient operation Effect

Inactive Publication Date: 2018-11-16
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current method for making specimen models with joints and cracks is mainly the one-time molding method, and the one-time molding method needs to insert plastic plates and other sheets at the designed joint positions to make joints after the mixed materials are poured into the test mold. More cumbersome, generally only one sample can be made at a time
Because it is not easy to control the angle and penetration rate of each sample joint sheet, there are often large errors in data analysis
[0005] Chinese patent document 201510587631.2 discloses the prefabrication of rock-like specimens with standard roughness joint surfaces, but this method is not suitable for the preparation of rock-like specimens with complex joints
Chinese patent document 201220173136.9 discloses a mold for making standard specimens of fractured rock materials at different angles. The mold controls the angle of prefabricated cracks by setting a number of inclined guide grooves. However, the number of inclined guide grooves is limited, and various angles cannot be realized. prefabricated cracks
Chinese patent document 201521041507.8 discloses a mold for making jointed specimens. However, the rotating disc is located at the bottom, which is inconvenient for rotating operation, and the width of the joint sheet is smaller than the width of the joint socket, which may cause liquid leakage.
[0006] At present, a type of rock sample mold can only produce samples of a single type of crack. Therefore, there is an urgent need for molds and methods that can produce rock-like material samples with different penetration rates, different inclination angles, and different crack shapes, which can be conveniently and quickly controlled. Penetration rate, inclination and crack shape to improve production efficiency

Method used

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  • Mold for rock-like sample containing complex joints and sample preparing method
  • Mold for rock-like sample containing complex joints and sample preparing method
  • Mold for rock-like sample containing complex joints and sample preparing method

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Such as Figure 1~6 As shown, a rock-like sample mold with complex joints includes a frame body 1, a pull-out rotating disc 2, a thin insert 3, and a joint insert 4; the frame body 1 includes a bottom plate and is vertically fixed to the There are two side plates on the two long sides of the bottom plate, the thin inserts 3 are two, and the two short sides of the thin inserts 3 perpendicular to the bottom plate are connected to the side plates. 3 and the frame body 1 form five sides of a rectangular parallelepiped; the thin insert 3 is provided with a circular hole, the pull-out rotating disk 2 is two, and the pull-out rotating disk 2 includes a rotating body, The handle and the insert plate 201, the diameter of the rotating body is the same as the diameter of the circular hole, one end of the rotating body is connected with a handle, and the other end of the rotating body is connected with two parallel inserting plates 201, the The insert plate 201 passes through the c...

Embodiment 2

[0056] A rock-like sample mold with complex joints is different from Example 1 in that Figure 7 As shown, the width of the joint insert 4 decreases from one end to the other end. The joint insert 4 of this shape can be used to produce joint samples with multiple penetration rates at one time.

Embodiment 3

[0058] A rock-like sample mold with complex joints is different from Example 1 in that Figure 8 As shown, the joint insert 4 is two rectangular inserts cross-connected in a cross shape. The rotating disk is connected with two parallel insert plates 201 with a gap in the middle. Each insert plate 201 is provided with two second bolt holes 202 on both sides of the gap. The joint insert 4 is connected to the insert plate 201. One end of the parallel rectangular blade is provided with two fourth pin holes 401, and the second pin hole 202 and the fourth pin hole 401 are connected by bolts to complete the fixing of the pull-out rotating disc 2 and the joint blade 4 connection. The joint insert 4 of this shape can be used to produce samples containing cross joints. The finished rock samples of this embodiment are as Picture 11 Shown.

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Abstract

The invention discloses a mold for a rock-like sample containing complex joints and a sample preparing method. The mold comprises a frame, a drawable rotating disc, thin embedded sheets and a joint insert sheet, wherein the frame comprises a bottom plate and two side plates vertically fixed on two long sides of the bottom plate; the two thin embedded sheets are perpendicular to two short sides ofthe bottom plate and connected with the side plates, and five faces of a cuboid are formed by the thin embedded sheets and the frame; round holes are formed in the thin embedded sheets; the drawable rotating disc comprises a rotating body, a handle and an insert plate, the diameter of the rotating body is equal to that of each round hole, one end of the rotating body is connected with the handle,the other end of the rotating body is connected with the insert plate, and the insert plate penetrates the round holes and is located in the frame; the joint insert sheet is connected with the insertplate and has different shapes. Rock-like material samples with different penetration rates, different inclinations and different fracture shapes can be prepared with the mold.

Description

Technical field [0001] The invention belongs to the field of rock mechanics and rock engineering, and specifically relates to a rock-like sample mold containing complex joints and a sample preparation method. Background technique [0002] Jointed rock mass is a complex rock mass frequently encountered in water conservancy and hydropower engineering, tunnel engineering, and mining engineering. The rock mass contains natural weak surfaces of different scales. Under the action of geological movement, these existing weak surfaces will close, open, expand or cause new fractures in the rock. Compared with complete rock masses, the mechanical properties of jointed rock masses are largely determined by these weak structural surfaces. When groundwater flows in a jointed rock mass, the characteristics of the joints, such as angle and penetration rate, affect the mechanical and hydraulic properties of the jointed rock mass to a certain extent. [0003] The simulation experiment method to st...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/286G01N1/36G01N2001/2873G01N2001/366
Inventor 王伟尹子学许高杰赵腾朱其志张明悦金红阳张兴毅
Owner HOHAI UNIV
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