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Device and method for preparing simulated rock sample containing complex-form soft layer

A weak and morphological technology, applied in the field of devices for preparing simulated rock samples with complex and weak layers, can solve the problems of difficulty in controlling the thickness of interlayers, low sample preparation efficiency, and the influence of physical and mechanical properties at the cement interface, and achieve high sample preparation. Efficiency, efficient preparation effect

Active Publication Date: 2022-01-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The layered casting method has the problems of difficult control of interlayer thickness and low sample preparation efficiency. The method of setting partitions in the mold has the problem of easy damage to the interface when removing the partitions, and epoxy resin bonding will damage the cemented interface. affect the physical and mechanical properties of the
Moreover, most of the existing preparation methods are difficult to conveniently simulate the soft layers with complex shapes in the rock mass.

Method used

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  • Device and method for preparing simulated rock sample containing complex-form soft layer
  • Device and method for preparing simulated rock sample containing complex-form soft layer
  • Device and method for preparing simulated rock sample containing complex-form soft layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 of the present invention provides a device for preparing a simulated rock sample containing a complex-shaped weak layer, including a plaster formwork, a partition holder, a rock sample mold, a sliding guide rail, and a filling system. Among them, the gypsum formwork is used to make the paraffin spacer 9 with special shape from the easily meltable material paraffin, the paraffin spacer 9 is provided with a paraffin spacer clamping section 901, the rock sample mold includes a rock sample mold top plate 101, and the rock sample mold The bottom plate 102 and the L-shaped side plate 2, the top plate 101 and the bottom plate 102 are provided with a fitting groove 4 consistent with the thickness and length of the side plate 2, and the side plate 2 and the top and bottom plates 1 are fitted with each other through the fitting groove 4 to form a tenon The shank structure is used to achieve the purpose of tight connection, and the two L-shaped side plates are connecte...

Embodiment 2

[0053] Embodiment 2 of the present invention provides a method for preparing a simulated rock sample containing a complex and weak layer, which specifically includes the following steps:

[0054] Step 1: Customize or make a plaster template with a special shape by yourself, and pour heated and melted paraffin into the plaster template. After the paraffin wax is cooled and shaped, the preliminarily formed paraffin wax separator is demolded from the plaster formwork. Use tools such as syringes and scrapers to modify the shape of the preliminarily formed paraffin septum.

[0055] Step 2: Fill the liquid injection port or liquid discharge port 5 (501-liquid injection port, 502-liquid discharge port) on the top and bottom plate 1 of the rock sample mold with paraffin; fill the channel 6 inside the top and bottom plate 1 of the rock sample mold with paraffin wax, And polished smooth.

[0056] Step 3: By connecting the buckle 3 and fitting the groove 4, assemble the bottom plate 10...

Embodiment 3

[0070] Embodiment 3 of the present invention provides a method for preparing a simulated rock sample containing a complex and weak layer in the absence of filling system-related equipment and low preparation requirements, which specifically includes the following steps:

[0071] Step 1: Customize or make a gypsum formwork with a special shape by yourself, pour heated and melted paraffin into the gypsum formwork, and after the paraffin is cooled and formed, demould the preliminarily formed paraffin partition from the gypsum formwork; with the help of a syringe and a scraper and other tools to modify the shape of the preliminarily formed paraffin septum.

[0072] Step 2: Fill the liquid injection port or liquid discharge port 5 (501-liquid injection port, 502-liquid discharge port) on the top and bottom plate 1 of the rock sample mold with paraffin; fill the channel 6 inside the top and bottom plate 1 of the rock sample mold with paraffin wax, And polished smooth.

[0073] Step...

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Abstract

The invention discloses a preparation device and method for preparing a simulated rock sample containing a complex-form soft layer. The preparation device comprises a gypsum template, a partition plate holder, a rock sample mold, a sliding guide rail and a filling system. According to the invention, a paraffin partition plate with a special form is prepared from a fusible material paraffin by means of the gypsum template; the manufactured paraffin partition plate is fixed through the partition plate holder and inserted into a top-surface-free mold box body; the partition plate holder and the sliding guide rail are connected to adjust the position and the dip angle of the paraffin partition plate; a hard rock stratum simulation material is poured into the top-surface-free mold box body, and a vibration table is used for vibrating and compacting; a middle sample containing a special-form paraffin layer and a hard rock layer is obtained after condensation; a mold top plate is covered to form a closed cavity; the middle sample is heated to melt the paraffin layer, a soft layer simulation material is injected into the closed cavity from a liquid injection opening of the closed cavity through the filling system; and meanwhile, paraffin is discharged from a material liquid discharging opening, and after the paraffin is completely discharged, the sample is condensed, demolded and cured, so the simulated rock sample containing the complex-form soft layer is obtained.

Description

technical field [0001] The invention belongs to the technical field of rock mechanics and rock mass physical simulation, and in particular relates to a device and a method for preparing simulated rock samples containing weak layers with complex shapes. [0002] technical background [0003] Due to the complexity and diversity of natural rock mass, it is often necessary to prepare rock mass physical simulation samples when carrying out rock mechanics experimental research indoors. According to the cybernetics of rock mass structure, the rock mass structure has an important influence on the physical and mechanical properties of rock mass. Weak interlayers are a common structural plane. In addition to their thickness, inclination, and physical and mechanical properties, the shape of weak interlayers is also an important factor affecting their mechanical properties. It is of great significance for the experimental research of rock mechanics to prepare simulated rock samples that...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/286G01N1/36G01N2001/366
Inventor 曹函杜宗霖孙平贺高强朱东云李宗策
Owner CENT SOUTH UNIV