Portable urban geological anomaly seismic detection system and method

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 ...

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 underground target body (2) As the ground of urban roads is mostly asphalt or concrete pavement, the coupling of the geophone is poor, and the quality of data acquisition is not high; (3) The excitation source is greatly affected by the ground conditions , the artificial hammering force is uneven, resulting in poor detection effect;

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