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Three-dimensional intermittent cut-through crack production apparatus and method of cuboid rock test sample

A rock sample and device manufacturing technology, which is applied in the field of geotechnical engineering, can solve problems such as difficult to accurately reflect mechanical properties and crack expansion mechanisms, and achieve the effects of ensuring accuracy, convenient operation, and high precision

Active Publication Date: 2016-11-09
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rock is a medium composed of different minerals, which has significant characteristics such as heterogeneity and anisotropy. It is difficult for rock-like materials to accurately reflect the mechanical properties and crack propagation mechanism of real rock materials.

Method used

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  • Three-dimensional intermittent cut-through crack production apparatus and method of cuboid rock test sample
  • Three-dimensional intermittent cut-through crack production apparatus and method of cuboid rock test sample
  • Three-dimensional intermittent cut-through crack production apparatus and method of cuboid rock test sample

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Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: see Figure 1-Figure 6 , the present invention is a cuboid rock sample three-dimensional intermittent through-crack production device, the cuboid rock sample three-dimensional intermittent through-crack structure such as figure 1 As shown in the figure, the rock sample includes two intermittent through fractures, the fracture width is d, and the fracture inclination angle is α. The device for making the crack in the present invention includes a frame, an electric wire saw assembly arranged on the frame, a three-dimensional moving assembly, a sample fixing assembly and a crack width control assembly.

[0034]Wherein, the frame includes a worktable 1 and legs 2, the lower part of the worktable 1 is provided with a lower support plate 3, the upper part of the worktable is provided with an upper supporter 4, and the electric wire saw assembly includes an upper The four-link cutting mechanism composed of the swing rod 5, the lower swing rod 6, the connecting rod ...

Embodiment 2

[0038] Example 2: see Figure 1-Figure 6 , a method for making cracks using the cuboid rock sample three-dimensional intermittently penetrating crack making device described in Embodiment 1, comprising the following steps:

[0039] ① Collect real rock samples, cut and grind the rock samples to form cuboid rock samples, determine the position and size of the two intermittent prefabricated fractures through solid staking, and drill holes at both ends of each prefabricated fracture to make The rock samples corresponding to both ends of the prefabricated fissures are formed with through-holes through the top and bottom surfaces, and the diameter of the boreholes is the same as the width of the prefabricated fissures.

[0040] ②Place the cuboid rock sample between the two V-shaped clamps, and adjust the orientation of the rock sample with reference to the centering scale on the bottom plate. The rod pushes the V-shaped clamps toward each other to clamp the rock sample.

[0041] ③...

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Abstract

The invention belongs to the technical field of geotechnical engineering, and relates to a three-dimensional intermittent cut-through crack production apparatus and method of a cuboid rock test sample. The three-dimensional intermittent cut-through crack production apparatus comprises a stander, and an electric wire saw assembly, a three-dimensional moving assembly, a test sample fixing assembly and a crack width control assembly which are arranged on the stander. By adopting the three-dimensional moving assembly and the test sample fixing assembly, the multi-azimuth three-dimensional adjustment of the real rock test sample can be realized, and the production requirement of the cut-through crack can be met; meanwhile, the production of different intermittent prefabricated cracks of different dip angles and different widths can be completed by virtue of the cooperation of the electric wire saw assembly and the crack width control assembly; meanwhile, the problem of the manual saw wire cutting that the flatness and smoothness are insufficient and the crack difference of different samples is great can be effectively solved by virtue of the crack width control assembly, a test result can be maximally optimized, the accuracy of the test result can be guaranteed, and the cracking rule of the rock can be actually reflected.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a device and a method for making three-dimensional intermittently penetrating cracks of a cuboid rock sample. Background technique [0002] Fractured rock mass is one of the most common and important media in water conservancy, mining, transportation, energy, national defense and other industries. Due to diagenesis and tectonic movement, there are intermittently developed fissures of different scales in the fractured rock mass. Fractured rock mass directly affects the safety and stability of large-scale hydropower projects, such as underground powerhouses, ultra-long hydraulic tunnels, underground energy storage, and underground isolation of nuclear waste. Key factors to consider first. A large number of engineering practices at home and abroad show that the fracture and instability of engineering rock mass are mostly caused by the initiation, expan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 于怀昌史广诚刘汉东黄志全王硕楠邓绪彪徐荣超张蒙飞罗明迪
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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