Pneumatic earthquake source for earthquake-wave geological detecting instrument

Abstract

The invention relates to a mining geological detecting instrument, in particular to a pneumatic earthquake source for an earthquake-wave geological detecting instrument. The pneumatic earthquake source comprises a cylinder body, an air inlet joint, a steam-cylinder upper cover, a sealing magnetic absorbing plate, a strong magnetic plate, a stainless steel hammer head, a return spring, a copper gasket, a lower cover hammer pad and cushioning devices, wherein the air inlet joint is arranged on the steam-cylinder upper cover; the sealing magnetic absorbing plate, the strong magnetic plate, the stainless steel hammer head and the return spring are arranged in the cylinder body in sequence from top to bottom; the lower cover hammer pad is connected with the cylinder body by the plurality of cushioning devices; and the upper surface of the lower cover hammer pad is provided with the copper pad. The pneumatic earthquake source has the advantages that large impact force generated to the ground can be met, the hammering effect is realized, simultaneously the force application in each time is uniform so as to generate good and consistent waveforms and finish large-area and multi-density multipoint test; and the whole design is compact, the carrying is convenient, the supporting is strong, the cushioning is effective, the operation can be finished by single person and the anti-explosion requirement is met.

Description

technical field [0001] The invention relates to a mining geological detection instrument, in particular to a pneumatic seismic source for a seismic wave geological detection instrument. Background technique [0002] Seismic wave detection technology is one of the main methods of geophysical detection, and also one of the important means of mining geological exploration. The artificially excited seismic waves propagate in different underground media, which can reflect the underground structures with different wave velocities and density interfaces, as well as the distribution of abnormal bodies with different surrounding rocks. [0003] Through the instrument, it is possible to detect the shape, trend, scope of influence, thickness of the top and bottom mine layers, and loose circles of surrounding rocks in mine mining areas and tunnels to detect faults, collapse columns, goafs, etc., providing information for geological anomalies in the mining production process. Timely and...

AI Technical Summary

Problems solved by technology

The function of the pneumatic seismic source is to push the pneumatic seismic source on different media in some areas of the underground roadway, and the external air source is controlled by the trigger to generate the seismic source, and the shock wave is fed back to the special instrument to generate the required parameters to judge the mining area of ​​the mine. In the past, the ground was usually struck with a copper hammer manually to generate shock waves. However, due to the strength of manpower and physical limitations, the source of artificial hammering is often unstable, and the effect of each hammering is inconsistent, which requires high physical strength. , so that the deviation of the test parameters affects the accuracy, the test is not deep enough, and the test data is not detailed enough

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