Portable urban geological anomaly seismic detection system and method

A detection system and geological anomaly technology, applied in the field of seismic exploration, can solve the problems of uneven artificial hammering force, poor detection effect, low construction efficiency, etc., and achieve high-precision urban seismic exploration, efficient urban seismic exploration, and improved work The effect of efficiency

Inactive Publication Date: 2016-11-23
ANHUI HUIZHOU GEOLOGY SECURITY INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional reflection seismic exploration method has the following deficiencies: (1) The actual detection construction is mostly in the manual excitation and receiving observation mode. When the detection accuracy is high, the distribution density of the survey line needs to be increased to increase the coverage of the under

Method used

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  • Portable urban geological anomaly seismic detection system and method
  • Portable urban geological anomaly seismic detection system and method
  • Portable urban geological anomaly seismic detection system and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the geophone core 2 in the roller seismic sensor 1 is a single component, and the sensitivity direction of the geophone core 2 is perpendicular to the ground direction, and the roller seismic sensor 1 is coupled with the ground through its own weight; the source device includes a base 10, The source device support 7, the pulley 8 and the longitudinal wave excitation weight 9 used to excite the longitudinal wave seismic signal, the source device support 7 is installed on the base 10, the base 10 is placed on the ground and is provided with a piezoelectric sensor inside, piezoelectric The positive and negative ends of the sensor are respectively connected with the positive and negative terminals on the external trigger device 6, and the upper end of the source device bracket 7 is equipped with a pulley 8, which is connected with the longitudinal wave excitation weight 9 through a lead wire, and the longitudinal wave excitation weight 9 is perpend...

Embodiment 2

[0035] Such as figure 2 As shown, the geophone core 2 in the roller seismic sensor 1 is a single component, the sensitivity direction of the geophone core 2 is the horizontal direction, and the roller seismic sensor 1 is coupled with the ground by its own weight; the source device includes a base 10, The source device support 7, the source device connecting rod 13 and the shear wave excitation weight 14 for exciting the shear wave seismic signal, the source device support 7 is installed on the base 10, the base 10 is placed on the ground and is provided with a piezoelectric sensor inside The upper end of the seismic source device support 7 is equipped with a seismic source device connecting rod 13, there is an angle between the seismic source device support 7 and the seismic source device connecting rod 13 and the angle is less than 90 degrees, and the other end of the seismic source device connecting rod 13 is installed with a shear wave excitation weight 14 , the shear wave...

Embodiment 3

[0038] Such as image 3 As shown, the number of roller seismic sensors 1 is eight. The difference between this embodiment and Embodiment 1 is that the combination of the roller seismic sensor 1 of the seismic signal receiving device is different, and the number of geophone cores 2 can be 1, 2 or 3. When a roller seismic sensor is installed When the geophone core is used, the component of the geophone core is the vertical component or the horizontal component; when the roller seismic sensor is equipped with two geophone cores, the two geophone cores are two horizontal components, or one horizontal component The component is a vertical component; when the roller seismic sensor is equipped with three geophone cores, the three geophone cores are two horizontal components perpendicular to each other on the horizontal plane, plus a component perpendicular to the horizontal plane. The seismic signal receiving device is a sensor cascade formed by cascading 8 roller-type seismic senso...

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Abstract

The invention relates to a portable geological anomaly seismic detection system and method. The system includes a seismic signal receiving device which uses a linear movable sensor cascade body formed by a plurality of roller type seismic sensors through a multi-connecting-rod shockproof support. Wave-detector core bodies are arranged in rollers of the roller type seismic sensors. A wireless seismic acquisition base and an external triggering device are installed on the multi-connecting-rod shockproof support. A hypocenter device is arranged beside the multi-connecting-rod shockproof support and is connected to the external triggering device. The wireless seismic acquisition base is respectively connected to the wave-detector core bodies and the external triggering device. The portable geology abnormity seismic detection system and method are suitable for abnormity detection and geological diagnosis within 50 meters of urban underground. Because the wave-detector core bodies are fixed at roller shaft parts, the nondestructive detection is realized under the condition of self weight coupling, which is really different from the wave-detector arrangement in the traditional sense, and the work efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a portable urban geological anomaly seismic detection system and a detection method thereof. Background technique [0002] Urban underground space construction causes stratum disturbance and soil erosion, causing urban ground subsidence and underground engineering damage, especially the detection of abnormal objects shallower than 50 meters on the surface is becoming more and more important. The means of detecting underground cavities, non-dense zones, voids, etc. that cause road surface subsidence at home and abroad are mainly engineering drilling and geophysical detection. [0003] Drilling is the most commonly used method, which can directly reflect the local underground medium conditions. However, the drilling construction period is long, the efficiency is low, and there is a risk of damage to underground pipelines. Drilling is a "one-hole view", which makes it ...

Claims

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Application Information

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IPC IPC(8): G01V1/00G01V1/18G01V1/20
CPCG01V1/008G01V1/184G01V1/20
Inventor 周官群刘惠洲孙尚云潘乐荀任川吴昭胡斌兰鹏波
Owner ANHUI HUIZHOU GEOLOGY SECURITY INST
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