Multi-channel spark source system under microsecond time sequence control and control method

Abstract

The invention relates to the technical field of seismic exploration, and particularly relates to a multi-channel spark source system under microsecond time sequence control. The system comprises a number of single-channel spark sources, an ARM processor, a host computer, a cross station and a geophone. The ARM processor carries out signal transmission between the single-channel spark sources and the host computer. The host computer sends a control instruction to the ARM processor according to information transmitted between the single-channel spark sources and the cross station. The cross station transmits a seismic wave signal acquired by the geophone to the host computer. According to the invention, a number of single-channel spark sources are assembled into a system at a construction site; the ARM processor and the host computer are used for centralized control; the problem of difficult mountain detection of a traditional high-energy spark source system is solved; a number of sources are used for discharging; delay is recorded; all single-channel spark sources are centralizedly controlled; discharge energy superposition is optimized; and the problem of insufficient seismic wave excitation energy is solved.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a microsecond timing-controlled multi-channel electric spark seismic source system and a control method. Background technique [0002] The seismic wave is artificially excited on the surface, and when the seismic wave travels underground, reflection and refraction will occur when it encounters the interface between rock layers with different medium properties. When the excited seismic wave is strong enough and the frequency spectrum is within the suitable propagation range, we can receive this seismic wave on the surface or in the well through the geophone. Structure is directly related, so inferences can be made about the nature and morphology of subsurface rock formations. Here, the seismic source system undoubtedly plays the role of an engine and a learning experience, which determines the feasibility and accuracy of mineral exploration. The source systems for la...

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Problems solved by technology

However, the previous series of products have the characteristics of large volume and cumbersome field work. In addition, these source systems must dig wells for water injection or use groundwater layers.

Given that most metal mines are mostly located in mountainous areas, this method is feasible, but it is extremely inconvenient to implement

[0003] The Chinese patent with publication number 102830427A discloses a detection method of electric spark source for elastic wave exploration, and the Chinese patent with publication number 1632615 discloses an intelligent control compound coherent electric spark source device, which is mainly used in the field of marine seismic exploration and requires There is a vast body of water that cannot be used for land use

The Chinese Patent Publication No. 102830638A discloses the controllable electric spark source circuit and the XW5512A electric spark source produced by Xiangtan Radio Co., Ltd., which stores only 900J of electric energy, and can be used for construction pile foundation, bridge pier detection, metal non-destructive testing and shallow exploration, etc. , but if it is used for deep geological exploration, the lack of excitation energy will cause signal attenuation, and it is often difficult for the detector to collect echo signals, which is difficult to implement in engineering

Publication No. 85103629 Chinese Patent discloses a vehicle-mounted land electric spark seismic source. All components of the seismic source are installed on a car or trailer, which can bring great convenience to exploration in flat areas, but is not practical in mountainous areas.

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