Magnetic positioning based online monitoring method of achieving of landslide deep layer displacement measurement

A displacement measurement and magnetic positioning technology, applied in measurement devices, electromagnetic means, instruments, etc., can solve problems such as failure and obsolescence of inclination holes, and achieve the effects of high data sampling frequency, small environmental impact, and intuitive and reliable information.

Inactive Publication Date: 2013-11-27
CHINA THREE GORGES UNIV
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Problems solved by technology

[0003] The specific method of drilling inclinometers is to drill down from the surface of the landslide to several meters below the sliding surface, install an inclinometer pipe with a chute, and the external grouting of the inclinometer pipe is firmly combined with the landslide body. Measure the inclination change of the inclinometer tube in the section, and consi

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  • Magnetic positioning based online monitoring method of achieving of landslide deep layer displacement measurement
  • Magnetic positioning based online monitoring method of achieving of landslide deep layer displacement measurement
  • Magnetic positioning based online monitoring method of achieving of landslide deep layer displacement measurement

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[0027] The embodiments of the present invention will be further described below in conjunction with the drawings.

[0028] See Figure 1-4 , An online monitoring method for deep displacement measurement of landslide based on magnetic positioning, including the following steps:

[0029] 1) For the landslide body that needs to be monitored, drill down from the surface of the landslide to the stable layer below the sliding surface, bury permanent magnets in the stable layer, and grouting on the outside to make it firmly combined with the landslide body;

[0030] 2) Fix two or more magnetic detectors with a fixing device to form a detection device, and place the detection device along the landslide layer above the sliding surface of the borehole, thus forming a local node monitoring system;

[0031] 3) Through the above steps, a group of such node monitoring systems are arranged every tens of meters, and then each monitoring node is numbered. The detection device is connected to the data p...

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Abstract

Disclosed is a magnetic positioning based online monitoring method of achieving of landslide deep layer displacement measurement. One permanent magnet and two or more magnetic detectors constitute a local node monitoring system, and a plurality of nodes are distributed on a landslide body to form an overall landslide monitoring network; in the local node monitoring system, the permanent magnet is fixed to a landslide body stabilizing layer, the magnetic detectors are placed on a landslide layer of the landslide body, after magnetic signals detected by the magnetic detectors are sent back to a monitoring center, the space positions of the magnetic detectors are worked out through a magnetic positioning algorithm, when a landslide happens, the space orientations and space positions of the magnetic detectors will change, the space positions of the magnetic detectors are determined through the same algorithm after the landslide happens, landslide deep layer displacements of the local nodes can be worked out through coordinate transformation, and landslide deep layer displacement data obtained through the monitoring network composed of the local monitoring nodes can be synthesized to assess landslide body deep layer landslide situations.

Description

technical field [0001] The invention provides an online monitoring method based on magnetic positioning to realize the displacement measurement of the deep layer of the landslide. Background technique: [0002] Landslides are geological disasters that often occur in hilly and mountainous areas, and account for the largest proportion of geological disasters in my country every year. In order to reduce the damage and loss caused by landslide geological disasters, three measures can be adopted to deal with landslide geological disasters: engineering protection, monitoring and early warning, or relocation and avoidance. Among them, monitoring and early warning is a semi-active preventive disaster reduction measure that is more commonly used. The main monitoring quantity of landslide disaster body is displacement, including the surface displacement of landslide body and the deep displacement of landslide body sliding along the sliding zone. The main technical means used for the d...

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Application Information

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IPC IPC(8): G01B7/02
Inventor 杨先卫潘礼庆吴剑王习东谭超罗志会许云丽马雪佳郑胜黄秀峰鲁广铎张国栋许文年田斌李建林
Owner CHINA THREE GORGES UNIV
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