Rock test piece manufacturing mold capable of adjusting joint angle and position and using method

A technology of rock specimen and angle adjustment device, which is applied in the preparation of test samples and other directions, can solve the problems of mold usage limitation, inability to achieve cross-joint specimens, etc., and achieves convenient assembly and mold disassembly, ingenious design and device novel effect

Active Publication Date: 2020-05-29
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to realize the above research, there are currently some molds that can change the inclination angle and position of the joints before pouring the test pieces, such as: a mold for making crack surfaces of rock-like test pieces disclosed in Chinese Patent Application No. 201110422886.5; The mold of the rock-like specimen with the cracked surface of the disk and the mold of the rock-like specimen with non-penetrating cracks disclosed in 2016010517486.5, the technologies disclosed in these three documents have similar principles of changing the joint angle, and they are all through the mold in the The rotation around the cylinder axis in the mold cylinder is realized, but it is all made for a single-joint test piece, and it is impossible to make a cross-joint test piece, which limits the use of the mold

Method used

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  • Rock test piece manufacturing mold capable of adjusting joint angle and position and using method
  • Rock test piece manufacturing mold capable of adjusting joint angle and position and using method
  • Rock test piece manufacturing mold capable of adjusting joint angle and position and using method

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Experimental program
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Embodiment 1

[0039] refer to figure 1As shown, the rock specimen production mold for adjusting the joint angle and position of the present invention includes a rectangular mold groove with an upper opening, which is composed of a fixed template 1 and a movable side plate 2, and a position adjustment device with adjustable horizontal and vertical axes. Composed of steel ruler plate 3 and sliding positioning straight rod 4, the angle adjustment device 5 of two prefabricated mold splints 6 on the inner wall, the above-mentioned components are connected and fixed by self-tightening bolts 7, long rod bolts 8, self-tightening nuts 9 and prefabricated grooves , The "X" shaped die material 11 with a crossing angle is polypropylene material.

[0040] figure 2 for figure 1 top view.

[0041] refer to image 3 As shown, the rectangular mold with upper opening is divided into fixed bottom plate 1a, fixed main side plate 1b, fixed secondary side plate 1c, movable main side plate 2a and movable sec...

Embodiment 2

[0053] Embodiment 2 is basically the same as Embodiment 1. It also assembles a rectangular groove first to make a rock-like sample, and then uses the position adjustment device and angle adjustment device to accurately determine the position and angle of the crack. The difference from Embodiment 1 is that this embodiment Example of prefabricated single-joint rock-like samples. refer to Figure 5 As shown, turn the second angle adjustment device 5b to a position that coincides with the size of the first angle adjustment device 5a, and at this time, the four groups of die splints are on the same plane. Only one piece of polypropylene mold piece 11 is needed, and its manufacture only considers the size of the cracks in the rock-like test piece, without slotting and assembling.

[0054] Using the mold described in this embodiment to make a rock-like specimen containing a single joint, the steps are basically the same as in Embodiment 1, the difference is that there is no need to ...

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Abstract

The invention discloses a rock test piece manufacturing mold capable of adjusting the joint angle and position and a using method. The manufacturing mold comprises a detachable rectangular mold groove, a position adjusting device composed of a steel plate ruler and a positioning sliding straight rod, an angle adjusting device internally provided with a mold piece fixing plate, and a mold piece made of polystyrene, wherein all the components are connected and fixed through self-tightening bolts, nuts and other parts, mold dismounting is convenient, and manufacturing of rock-like test pieces isfacilitated. The manufacturing mold is advantaged in that a rock-like sample of a prefabricated cross joint can be manufactured, the included angle and the position of the cross joint can be accurately controlled, research on diversified joint forms of the rock-like sample is facilitated, the obtained result is accurate in size data, and the manufacturing mold is simple in manufacturing mode, capable of being repeatedly used and beneficial to popularization.

Description

technical field [0001] The invention relates to the technical field of rock similar material testing, in particular to a mold for making a rock test piece for adjusting joint angles and positions and a method for using the same. Background technique [0002] There is no complete form of rock in nature, and there are many kinds of intermittent structural planes inside. The rock system is a discontinuous system, and its discontinuous structural planes include joints, faults, beddings, folds, etc. Various structural planes exist in complex and diverse forms, parallel or cross in space. With the passage of time, under the action of external force, the jointed surrounding rock cracks, and the cracks generate, develop, connect, and penetrate, resulting in macroscopic splitting cracks, until the surrounding rock is split and destroyed. The occurrence of splitting damage will destroy the integrity of the surrounding rock, lose its bearing capacity, and even cause a series of major ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/28G01N1/36
Inventor 李晓静白逸凡刘平吕明英
Owner SHANDONG JIANZHU UNIV
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