Core separation box for continuous coring with hydraulic reverse circulation in coal mine and method thereof

Abstract

A core separation box for continuous coring with hydraulic reverse circulation in a coal mine and a method thereof. The barrel is inserted into the core cabinet, and the core cabinet is arranged in the negative pressure extraction box at a certain angle. The sliding joint enters the core barrel, the coal core hits the transmission rod of the core signaling mechanism, the signaling mechanism oscillates to transmit information, the coal cuttings and flushing fluid enter the sediment box through the annular through hole arranged in the core barrel, and the overflowing pressure relief in the return channel The gas will enter the gas negative pressure extraction pipeline through the negative pressure extraction box; thus, the present invention integrates the reporting letter on the coal core, the coal core collection, the gas extraction and the sediment collection, and has a simple structure, convenient assembly and operation. Simple, to ensure safe construction in coal mines.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, in particular to a core separation box for continuous coring with hydraulic reverse circulation in a coal mine and a method thereof. Background technique [0002] Underground geological anomalies in coal mines are a major safety hazard for coal mine safety production. As coal mines gradually implement a refined management model, in order to avoid unplanned exposure of geological structures, the work of identifying geological structures in coal mining faces, especially geological anomalies, etc. Higher requirements for precise detection of structural elements are put forward, and only pre-identification can ensure safe production. At present, drilling is the most intuitive, effective and accurate technical means, which can be divided into two exploration methods: coreless drilling and coring drilling. Tunnel coring drilling is mainly based on horizontal drilling, and the coring process...

AI Technical Summary

Problems solved by technology

[0004] At present, there is no supporting coal core separation box in the underground of the coal mine. Basically, the coal core and broken coal cuttings are discharged directly into the designated box through the rubber hose, and the pressure relief gas escaped from the reverse circulation channel is not collected. , there is a certain security risk

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