A device and method for observing the height of a water-conducting fracture zone in a three-dimensional similar material simulation experiment

A water-conducting fissure zone and similar material technology, applied in the field of observation devices for the height of the water-conducting fissure zone, can solve problems such as difficult observation, and achieve the effects of simple device and method, promotion of use, and reduction of workload

Inactive Publication Date: 2017-09-05
HENAN POLYTECHNIC UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, since the cracks in the three-dimensional model mainly occur inside the model, it is difficult to observe from the outside
After reviewing relevant information, it is found that there is currently no device and method that can effectively observe the height of the water-conducting fissure zone inside the three-dimensional model

Method used

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  • A device and method for observing the height of a water-conducting fracture zone in a three-dimensional similar material simulation experiment
  • A device and method for observing the height of a water-conducting fracture zone in a three-dimensional similar material simulation experiment
  • A device and method for observing the height of a water-conducting fracture zone in a three-dimensional similar material simulation experiment

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[0024] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.

[0025] Such as Figure 1-3 As shown, the present invention provides an observation device for the height of the water-conducting fracture zone in a three-dimensional similar material simulation experiment, which includes a computer 5, a dynamic resistance strain gauge 3, an A / D converter 4, a wire 2 and a strain gauge 1; wherein, The strain gauge 1 is a closed structure with an inner hollow, and four sets of rosettes 8 are pasted on the inner wall of the strain gauge, and the strain rosettes are covered with moisture-proof silicone rubber 12, and the strain gauges 1 are vertically arranged multiple, and the strain gauge 1 is connected to the dynamic resistance strain g...

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Abstract

The invention provides a water-flowing fractured zone height observing device and method used in a three-dimensional similar material simulation experiment. The water-flowing fractured zone height observing device comprises a computer, a dynamic resistance strain instrument, an A / D converter, wires and strainometers. The strainometers are of a hollow and sealed structure. Four groups of strain rosettes are attached to the inner walls of the strainometers. The strain rosettes are covered with moistureproof silicone rubber. All the strainometers are connected with the dynamic resistance strain instrument through the corresponding wires. The dynamic resistance strain instrument is connected with the A / D converter. The A / D converter is connected with the computer. According to the water-flowing fractured zone height observing device and method, the inner-patch aluminum alloy shell strainometers are placed to the positions required to be observed to observe the magnitude of primary stress at four points surrounding the strainometers. Due to the fact that discontinuity always exists in rock mass, the strength of extension of rock mass is far less than the compressive strength, and the destructional form in a model is mainly tensile damage. According to the rock damage strength theory, the developmental state of a fissure zone at the measuring point can be obtained.

Description

technical field [0001] The invention relates to the technical field of testing and measurement, in particular to a device and method for observing the height of a water-conducting fissure zone in a three-dimensional similar material simulation experiment. Background technique [0002] In the process of coal mine production, the development height of the water-conducting fissure zone in the mining overburden is studied, and the movement and damage laws of the overburden rock and the development height of the water-conducting fissure zone are mastered, so as to reasonably determine the safe mining upper limit of the coal seam and the coal mining. The method has very important theoretical significance and practical value for the realization of mine safety production, water conservation coal mining and ground ecological environment protection. [0003] In the previous studies on the water-conducting fracture zone, the two-dimensional plane similar material simulation was general...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 杜锋李振华郑金雷顾合龙
Owner HENAN POLYTECHNIC UNIV
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