Coupling fitting, operation vehicle and vibroseis and rock wall vertical coupling method

Abstract

The invention provides a coupling fitting, an operation vehicle and a vibroseis and rock wall vertical coupling method. The coupling fitting comprises a fitting body, and the fitting body is providedwith a blind hole formed by sinking downwards from the upper bottom surface of the fitting body and a groove formed by sinking upwards from the lower bottom surface of the fitting body. Internal threads are arranged on the inner wall of the blind hole, and the blind hole is used for being in threaded connection with the outer end of a full-length anchoring anchor rod vertically installed on the rock wall; and the groove is used for inserting and fixing the shock excitation head of the vibroseis shock excitation part. According to the embodiment of the invention, the blind hole of the couplingfitting is in threaded connection with the outer end of the full-length anchoring anchor rod vertically mounted on the rock wall; and the shock excitation head of the vibroseis shock excitation part is inserted and fixed with the groove of the coupling accessory, so that the vertical fixation between the vibroseis shock excitation part and the rock wall can be effectively realized, the vibroseis signal quality is remarkably improved, and the propagation distance of the first arrival wave in the coal and rock mass is increased.

Description

technical field [0001] The invention relates to the technical field of advanced seismic wave detection in coal mines, in particular to a coupling fitting, a working vehicle and a vertical coupling method between a vibrator and a rock wall. Background technique [0002] Coal mine seismic wave CT detection, as a mature technology, is widely used in the evaluation and prevention of rock burst, coal seam or roadway advanced detection, etc. Stress concentration level and geological structure. The current on-site implementation method is to arrange the excitation side and the receiving side on both sides of the working face respectively, drill a certain depth of blast holes in the coal wall on the excitation side and charge them with explosives, and install a geophone on the receiving side. After the installation is completed, the explosives are sequentially blasted to complete a round of detection. [0003] However, there are many shortcomings and limitations in the use of explo...

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Problems solved by technology

[0003] However, there are many shortcomings and limitations in the use of explosives as the excitation source, mainly in the strict control and high risk of explosives; the vibroseis, as an optimal artificial alternative source, has strict requirements on the contact and coupling of the excitation position, and the characteristics of loose and broken coal walls are obviously difficult. Satisfied; in addition, the geophone mainly receives the first arrival wave, and the source excitation point is perpendicular to the coal wall to obtain a longer propagation distance and less signal interference, but it is difficult to fix when the excitation part is perpendicular to the coal wall; by locally compacting the excitation position or Piling inside the coal wall can improve the coupling degree, but it has the disadvantages of complicated construction and damage to local support

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