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A method of simulating and testing drilling deformation

A simulation test, simulation box technology, applied in the direction of measurement, application of stable tension/pressure test material strength, earthwork drilling, etc., can solve problems such as drilling deformation, and achieve easy operation, good stability and simple structure. Effect

Active Publication Date: 2017-08-04
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a device and method for testing the deformation and collapse of boreholes for the problems of borehole deformation and collapse in the coal mine gas extraction process.

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  • A method of simulating and testing drilling deformation
  • A method of simulating and testing drilling deformation
  • A method of simulating and testing drilling deformation

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Embodiment Construction

[0026] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0027] Such as figure 1 As shown, the device for simulating and testing borehole deformation of the present invention mainly consists of a simulation box 1, a front side plate 4, an upper platen 6, a capsule pressure sensor 9, a pressure guide tube 10, a one-way The valve 11 and the pressure gauge 12 are composed; the simulation box 1 is a rectangular opening, and the upper pressure plate 6 is arranged on the simulation box 1, and a round hole is symmetrically opened on the front and rear side plates of the simulation box 1, and the round holes on the front and rear side plates are drilled The mold 8 is connected to form a simulated drilling environment, and the drilling mold 8 is as Image 6 As shown; the front side plate 4 of the simulation box 1 and the simulation box body are fixed by bolts 3, detachable, as figure 2 As shown; the simulation box 1 is...

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Abstract

A device and method for simulating and testing borehole deformation. The device includes a simulation box with similar materials of coal and rock mass inside, and an upper pressure plate arranged on the simulation box. A round hole is symmetrically opened on the front and rear side plates of the simulation box. The round hole on the top is connected through the drilling mold to form a simulated drilling environment. A capsule pressure sensor connected to a pressure guiding tube is installed in the simulated drilling hole. surface. Test method: Send the capsule pressure sensor into the borehole in the box, apply stress to the borehole, and record the borehole deformation and pressure gauge readings simultaneously, which is enough to dynamically record the borehole deformation and development law, and obtain the change relationship. The capsule pressure calculus of drilling deformation is simple in structure, easy to operate and good in simulation effect.

Description

technical field [0001] The invention relates to a device and method for simulating and testing borehole deformation, and is especially suitable for simulating the borehole deformation process of gas drainage. Background technique [0002] Coal still occupies a dominant position in my country's energy structure. With the development of the economy, the demand for coal continues to grow, the output of coal increases year by year, the depth of coal mining extends year by year, and the gas content and pressure of coal seams also gradually increase. The danger of dynamic disasters such as coal and gas outbursts also increases accordingly. Gas control is the first priority to ensure safe production in coal mines. [0003] Gas drainage is an effective measure to control gas problems in high gas and coal and gas outburst mines. The main method of gas extraction is drilling. However, due to the low gas permeability of coal seams in most mines in my country, sufficient extraction t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08E21B47/00
Inventor 李忠辉蔡冠楠钮月娄全
Owner CHINA UNIV OF MINING & TECH