Vertical shaft deviation monitoring method based on tilt angle sensors

The technology of an inclination sensor and a strain sensor is applied in the field of shaft deflection monitoring and vertical shaft deflection monitoring in coal mines. High precision and good environmental adaptability

Pending Publication Date: 2019-04-05
BEIJING CHINA COAL MINE ENG CO LTD
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Problems solved by technology

[0002] At present, for the deflection monitoring of coal mine vertical shafts in China, the traditional geometric measurement method of deformation measurement with suspension wire ropes is often used, which takes up a long time in the shaft and cannot realize automatic monitoring, which affects

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  • Vertical shaft deviation monitoring method based on tilt angle sensors
  • Vertical shaft deviation monitoring method based on tilt angle sensors
  • Vertical shaft deviation monitoring method based on tilt angle sensors

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Embodiment Construction

[0044] The principle of the vertical wellbore deflection monitoring method of the present invention is as follows: the side section of the wellbore structure is assumed to be a section of fixed cantilever beam. The deflection of the wellbore in the measurement section can be obtained. The more sensors are installed, the higher the measurement accuracy is. Finally, the deflection curve of the entire wellbore measurement section is fitted by the least square method. Compared with the traditional measurement method, the relative displacement change of each position of the wellbore can be directly measured by using the inclination sensor.

[0045] Based on the principle of the monitoring method, the shaft deflection monitoring method based on the inclination sensor of the present invention comprises the following steps:

[0046] (1) On the well wall, arrange 2 to 3 reference points along the bedrock position, and install an inclination sensor at each reference point for inspectio...

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Abstract

The invention discloses a vertical shaft deviation monitoring method based on tilt angle sensors. The vertical shaft deviation monitoring method comprises the steps: two to three datum points are arranged on the positions along bed rock, and the corresponding tilt angle sensors are mounted on all the datum points in case of examination; a plurality of measuring points are arranged on the shaft wall in the axial direction of a main shaft, and the corresponding tilt angle sensors are mounted on all the measuring points; and matched power supplies and data transmission cables are mounted for thetilt angle sensors and strain sensors, connected to the ground and connected with an automatic collecting device and system to achieve automatic and real-time collecting. According to the monitoring method for measuring the vertical shaft deviation through the tilt angle sensors, the measuring precision is high, the resolution ratio is 0.001 degree, the full measuring range precision is 0.005 degree, the temperature excursion is 0.001 degree/DEG C, environmental adaptability is good, the protection level is IP67, the tilt angle sensors can operate normally under the environment of minus 30 DEGC-85 DEG C, requirements of coal mine vertical shaft deviation monitoring can be met, sensor signals are transmitted to a ground control terminal on the shaft through a main optical cable, and thus automatic and real-time collecting is achieved.

Description

technical field [0001] The invention relates to the technical field of shaft deflection monitoring in coal mine shafts. Specifically, it is a vertical shaft deflection monitoring method based on an inclination sensor. Background technique [0002] At present, for the deflection monitoring of coal mine vertical shafts in China, the traditional geometric measurement method of deformation measurement with suspension wire ropes is often used, which takes up a long time in the shaft and cannot realize automatic monitoring, which affects the normal production of the mine. Inclination sensors have been widely used in the measurement of vertical building deflection, such as the measurement of the inclination angle of high-rise buildings and overhead line towers, etc., but they have not been applied and promoted in the mining industry. Therefore, how to design a method that can be applied to the monitoring of shaft deflection in coal mine shafts and has the characteristics of high p...

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Application Information

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IPC IPC(8): G01C9/00G01B11/16
CPCG01C9/00G01B11/18
Inventor 杨春满梁智鹏景惧斌郭鹏孙迪王苏龙王媛孙晓平刘志生
Owner BEIJING CHINA COAL MINE ENG CO LTD
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