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Filling body and surrounding rock composite rock mass routine test sample production mold and production method

A technology for routine testing and filling, which is applied in the preparation, sampling, and instrumentation of test samples. It can solve the problems of high production cost, large labor loss and time waste, and large sample disturbance and damage, so as to reduce the production cost. , avoid damage, reduce labor loss and time waste

Active Publication Date: 2019-12-03
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Scholars at home and abroad have mainly conducted similar experiments, numerical simulations, and mechanical tests on the deformation and failure characteristics of composite rocks composed of near-horizontal layered coal rocks and salt rocks. There are few studies on the mechanical properties of composite rocks considering the occurrence of contact surfaces.
It is an effective method to study the interaction mechanism between the filling body and the surrounding rock through mechanical tests. However, at present, most samples are drilled in the field for mechanical tests. time, the waste of manpower and time is large, and the production cost is high

Method used

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  • Filling body and surrounding rock composite rock mass routine test sample production mold and production method
  • Filling body and surrounding rock composite rock mass routine test sample production mold and production method
  • Filling body and surrounding rock composite rock mass routine test sample production mold and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] like Figures 8-1 to 8-5 As shown, when the cemented surface is 0 to 60°, the surrounding rock is processed according to the size of the surrounding rock part of the composite rock mass sample; the template composed of the bottom plate 1 and two semicircular structures is connected by the connecting screw 7 and the bottom plate connecting screw 8 2 are combined together, and the processed surrounding rock is put into the circular cavity formed by the template 2; the template 2 and the reaction frame 4 are connected by the fixing bolt 3; since the maximum height of the surrounding rock is not formed in the circular cavity The upper plane structure in the cavity, therefore, there is no need to apply the upper platen 6, and the filling slurry is made according to the proportion and concentration requirements of the composite rock mass filling body and poured into the circular cavity formed by the formwork 2; the application consists of four The upper platen 6 composed of a...

Embodiment 2

[0061] like Figures 8-6 to 8-7 As shown, when the cemented surface is 75° to 90° (or less than 75° but greater than 60°, as long as the upper plane can appear according to the ratio of the bottom surface to the height), according to the size of the surrounding rock part of the composite rock mass sample Process the surrounding rock; combine the bottom plate 1 and the template 2 composed of two semicircular structures through the connecting screw 7 and the bottom plate connecting screw 8, and put the processed surrounding rock into the circular cavity formed by the template 2 ; Connect the template 2 and the reaction frame 4 through the fixing bolt 3; due to the maximum height of the surrounding rock, an upper plane structure has been formed in the circular cavity;

[0062] When the bonding surface is 75°, therefore, the upper pressing plate 6 needs to be applied, and the rightmost part of the upper pressing plate 6 needs to be applied, that is, the fourth split structure 604,...

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Abstract

The invention relates to the field of mine filling body and surrounding rock composite rock mass mechanical property test, in particular to a filling body and surrounding rock composite rock mass routine test sample manufacturing mould and a manufacturing method. A mould plate is mounted on a base; the mould plate consists of two semicircular structures; lugs are connected with a reaction frame through fixing bolts; the reaction frame is arranged above the mould plate; fixing jack screws are mounted on the reaction frame; and an upper pressing plate consists of a plurality of split type structures. The manufacturing method comprises the following steps: determining the numbers of the upper pressing plates which are applied to fixing the upper planes of surrounding rocks and the fixing jack screws which are matched with the upper pressing plates according to the type of the composite rock mass; preparing filling slurry, and casting the filling slurry into circular pore cavities filled with the surrounding rocks; applying the upper pressing plates which are not used in the split structures and the fixing jack screws to enclose a composite rock mass test sample; demoulding after the composite rock mass test sample is placed in a curing room for 24 hours, curing the filling body after the composite rock mass test sample is demoulded; and grinding a cured test sample into a standard test sample. According to the filling body and surrounding rock composite rock mass routine test sample manufacturing mould and the manufacturing method, the damage to a test sample caused by conventional field drilling and cutting sampling is avoided; and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of mechanical performance testing of a composite rock mass of a mine filling body and surrounding rock, in particular to a mold and a manufacturing method for making a routine test sample of a filling body and surrounding rock composite rock mass. Background technique [0002] The interaction mechanism between the filling body and the surrounding rock is to study the mechanical mechanism of the interaction between the filling body and the surrounding rock after the filling material is filled into the goaf. Scholars at home and abroad have done a lot of research work on the interaction mechanism between the filling body and the surrounding rock. , proposed three kinds of stope filling body support mechanism. The surface support function prevents the progressive failure of the near-site rock mass in space under low stress conditions by imposing motion constraints on the displacement of stope boundary blocks. Local supp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/36
CPCG01N1/36G01N2001/366
Inventor 卢宏建张松林张亚宾薛振林张友志张海波蔡晓盛
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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