Method for monitoring deformation amount of deep soft rock roadway

A technology of deformation amount and roadway, applied in the field of mine safety, can solve problems such as difficult to grasp the creep time law of soft rock roadway

Inactive Publication Date: 2019-03-15
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a monitoring method for the deformation of deep soft rock roadways that can monitor the deformation of roadways in real time, and solve the problem that it is difficult to grasp the creep time law of soft rock roadways at present

Method used

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  • Method for monitoring deformation amount of deep soft rock roadway
  • Method for monitoring deformation amount of deep soft rock roadway
  • Method for monitoring deformation amount of deep soft rock roadway

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Embodiment Construction

[0025] Drilling: At the head of the roadway (1) excavation, when the slag discharge is completed after the excavation and blasting, the monitoring point is selected, and 5 boreholes (2) are constructed on the roof and both sides. The distribution of the boreholes is as follows: figure 1 and 2 As shown, there are 3 boreholes (2) on the top plate, and 1 borehole (2) is arranged on each side of the side. The angle between the borehole (2) and the roadway (1) is 45 degrees. ) with a depth of 5m (can also be selected according to surrounding rock conditions or loose circles), and the diameter of the borehole (2) is 90mm.

[0026] Install the inclinometer tube: install the inclinometer tube (3) in the borehole, such as image 3 As shown, the bottom of the inclinometer tube (3) is conical. When installing, the two symmetrical notches of the inclinometer tube (3) should be placed vertically on the surface of the roadway (1). (3) and the surrounding rock wall of the borehole (2) are ...

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Abstract

The invention discloses a method for monitoring the deformation amount of a deep soft rock roadway. The method comprises the following steps of 1, drilling a hole; 2, installing an inclinometer tube;3, installing a sliding inclinometer; 4, linking an acquisition system. By adopting the method, the deformation amount of the free face of the roadway can be measured, the internal displacement of thefree face of the vertical roadway can be measured at the same time, a change rule of the internal displacement of the surrounding rock of the roadway can be truly reflected, and reasonable supportingparameters and proper supporting time can be determined. According to the method, a sliding inclinometer sensor and a real-time acquisition system are adopted to automatically acquire measurement data, thus the deformation amount of the free face of the roadway can be measured, and the internal displacement of the free face of the vertical roadway can also be measured at the same time; the methodcan truly reflect the creepage change rule of the internal displacement of the surrounding rock of the roadway along with time. Therefore, the key parameters of a soft rock roadway support design fordeep mining are precisely acquired in real time, and an ideal method for acquiring the key parameters is provided for the soft rock roadway support design under different geological conditions.

Description

technical field [0001] The invention belongs to the technical field of mine safety, and in particular relates to a method for monitoring deformation of deep soft rock roadways. Background technique [0002] High temperature, high pressure, and high stress disturbances are often brought about in the deep mining process of mines, resulting in increasing deformation of the roadway surrounding rock, especially for soft rocks with poor geological conditions, the deformation is difficult to accurately estimate , leading to more difficulty in roadway support, and because of the different geological conditions of each mine, even if there are differences in the geological conditions of the middle roadways of the same mine, the support parameters cannot be standardized. Since there is no unified support standard parameter for soft rock support, key support parameters must be obtained according to site conditions, and the deformation amount and deformation time of soft rock support are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/32
CPCG01B21/32
Inventor 罗周全吴亚斌张智博赖伟秦亚光文磊马少维
Owner CENT SOUTH UNIV
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