Detecting method for monitoring massif glide and shock bump geologic hazard

A technology of geological disasters and detection methods, which is applied in the direction of metrology, seismology, and measuring devices by measuring the change of material magnetic properties caused by applied stress, can solve unfavorable oilfield earthquake prediction and prevention work, and the ineffectiveness of electromagnetic wave earthquake precursor observation Obvious, hysteresis and passive issues

Inactive Publication Date: 2005-06-01
DAQING PETROLEUM ADMINISTRATION
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the deep well seismometer measurement can only have detection signal output when vibration occurs, and has the disadvantage of hysteresis and passiveness. The effect of electromagnetic wave earthquake precursor observation is not obvious in mine earthquake and microseismic observation. The artificial observation method has relatively large human factors and lags behind. However, it is difficult to control the method of picking rod detection during the implementation process.
Therefore, these methods are not conducive to the effective development of earthquake prediction and prevention work in oil fields and mining areas, and are not conducive to the monitoring of mountain slippage.

Method used

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  • Detecting method for monitoring massif glide and shock bump geologic hazard
  • Detecting method for monitoring massif glide and shock bump geologic hazard
  • Detecting method for monitoring massif glide and shock bump geologic hazard

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1. In the detection well, due to the good elasticity of the steel casing 8, when the local stress changes, it will be transmitted to the steel casing 8 and reflected on the ground control measuring instrument 1 through the magnetic sensor 6. The comparison of data collected at intervals and continuous time can collect information in real time, so that any small displacement or stress change of the monitored stratum can be judged, so as to provide geological disaster monitoring and forecasting information that micro-seismic or slippage may occur in the stratum or mountain. The amount of information is advanced.

Embodiment 2

[0014] Embodiment 2. In an open hole, that is to say, when the borehole casing is made of non-ferromagnetic materials, solid stones are used to fill the surroundings of the instrument to ensure the effective transmission of force, and then the controller 3 and the magnetic sensitive The sensor 6 is installed in a detector 9, so that the magnetic sensor 6 is connected to the detector 9, so that when the local stress changes, the monitoring host 10 can display the information of the magnetic sensor 6 through the cable 2, so as to analyze the change of the stress. Data that changes with time can accurately predict and forecast the degree of geological disasters such as micro-earthquakes, mine earthquakes, and slope slips, and the information data is advanced.

Embodiment 3

[0015] Embodiment 3, in the position that mine roof 12 or mountain need to be monitored, can adopt figure 2 According to the method, the controller 3 and the magnetic sensor 6 are placed in the detector 9 of ferromagnetic material, and the magnetic sensor 6 is directly connected to the detector 9 and supported by a support column 11 to ensure the contact between the detector 9 and the contact wall. Effective contact, so that the stress changes from the formation or mountain can be displayed on the monitoring host 10 through the magnetic sensor 6, so that the monitoring center can grasp the danger in time and accurately predict the possibility of formation or mountain slippage.

[0016] Using this method has the advantages of high forecast accuracy, large forecast advance, and convenient mobile operations. It can also change different monitoring areas according to the situation. Therefore, the prediction and forecast information can be accurately given in advance, so that geol...

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Abstract

A detection method for monitoring mountain slippage and mine earthquake geological hazards. The problem of signal hysteresis and inaccurate information data in the existing monitoring and judging methods of mine earthquakes, micro earthquakes and mountain slips is solved. It is characterized in that a certain number of inspection wells (7) with built-in steel casings (8) are drilled in the monitoring area, and the controller (3) connected with the ground control measuring instrument (1) and the pusher (4) is placed in the In the inspection well (7), several magnetic sensitive sensors (6) reliable on the steel casing (8) are symmetrically connected under the pusher (4) through the support arm (5), and the controller (3) controls The pusher (4) fits several magnetic sensors (6) on the inner wall of the steel casing (8), and the ground control measuring instrument (1) continuously measures the stress change information at the magnetic sensors (6). It has the characteristic of using ferromagnetic properties to reflect changes in ground stress.

Description

Technical field: [0001] The invention relates to a microseismic geological detection technology, which belongs to a detection method for monitoring mountain slippage and mining earthquake geological disasters. Background technique: [0002] With the continuous changes in nature and the continuous exploitation of underground mineral resources, some mountains have slipped, and the geology is also constantly changing, and mine earthquakes and micro-earthquakes often occur. At present, there are many methods for predicting and judging mine earthquakes, micro-earthquakes or mountain slips: deep well seismometer measurement, electromagnetic wave earthquake precursor observation, manual observation and brush rod detection, etc. However, the deep well seismometer measurement can only have detection signal output when vibration occurs, and has the disadvantage of hysteresis and passiveness. The effect of electromagnetic wave earthquake precursor observation is not obvious in mine ear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/12G01V1/00
Inventor 王忠义马文中陈国华卢怀宝陶洪根周志彬曲贤才曹景龙
Owner DAQING PETROLEUM ADMINISTRATION
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