A Synchronous Trigger Device for Delayed Explosive Source in Seismic Exploration of Mine

Abstract

The invention relates to the technical field of mine seismic exploration, in particular to a synchronous trigger device suitable for mine seismic exploration delay explosive source. It includes: a blasting busbar, at least one wire of which passes through the magnetic ring of the pulse current transformer built in the synchronous trigger device, and its two ends are respectively connected to the detonator and the detonator; wherein, the synchronous trigger device and the vibration pickup are respectively Connected to mine intrinsically safe nodal seismic substations. This patent utilizes the core-through current mutual induction technology, the shaping current limiting technology and the quick installation and fixing technology of the synchronous trigger device to effectively solve the design problem when the blasting busbar is connected to the synchronous trigger device.

Description

technical field [0001] The invention relates to the technical field of mine seismic exploration, in particular to a synchronous trigger device suitable for mine seismic exploration delay explosive source. Background technique [0002] Mine seismic exploration usually uses explosive seismic sources to excite seismic waves for structural detection. In the mine seismic exploration data acquisition construction operation, the most important task is to ensure the time consistency between the start of data acquisition and the detonation of explosive seismic sources. Whether the detonation time of the explosive source is accurately synchronized with the start time of data acquisition directly affects the follow-up processing effect and interpretation accuracy of mine seismic exploration data, and then affects the accuracy of mine seismic exploration results. According to my country's current coal mine safety regulations, most of the electric detonators used in the assembly of deton...

AI Technical Summary

Problems solved by technology

For the detonating powder roll made of the millisecond delay electric detonator used in mines, because the mine millisecond delay electric detonator detonates the explosive has a delay and the delay accuracy is low, the time error of the synchronous trigger device increases with the delay of the millisecond delay electric detonator. increased by influence

The above-mentioned synchronous trigger devices that can only record or detonate electric detonators with induction detonators are difficult to ensure accurate synchronization between mine seismic exploration data collection and explosive explosion time, which is reflected in seismic data. Not only will the direct wave be relatively cluttered, its phase The time intercept of the axis cannot be zeroed

In this case, although the collected data can reduce the error to a certain extent through data processing, due to the congenital deficiency in the design of the trigger, the original data collected by mine seismic exploration must be incomplete and inaccurate

[0004] To sum up, the existing synchronous triggering device only records or senses the moment when the detonator detonates the electric detonator, and there is an error in the detonation delay of the electric detonator, which affects the quality of seismic data acquisition.

For the detonating roll made of millisecond delay electric detonator, its synchronization accuracy is limited, and it cannot fundamentally solve the synchronization problem of data acquisition by the delay explosive source

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