Large-diameter down-the-hole hammer reverse circulation pipe-following drilling construction device

Abstract

The invention relates to a large-diameter down-the-hole hammer reverse circulation pipe-following drilling construction device, and belongs to the technical field of ground drilling emergency. The large-diameter down-the-hole hammer reverse circulation pipe-following drilling construction device mainly comprises a ground equipment system and an underground drilling tool system; the ground equipment system comprises an air compressor, a pressure stabilizing tank, a drilling machine, a vacuum pump, a water pump and a ground manifold; and the downhole drilling tool system comprises a double-walldrill rod, a reverse circulation down-the-hole hammer, a drill bit, a casing pipe and a pipe shoe. A gas-water faucet is mounted at the upper part of a power head mounted on a guide rail of the drilling machine and is connected with a gas inlet rubber pipe and a deslagging pipe; the lower end of the power head is connected with the double-wall drill rod, and the reverse circulation down-the-hole hammer and the drill bit connected with the lower end of the double-wall drill rod are coaxially distributed together with the casing pipe and the pipe shoe. By means of the device, efficient rock breaking and synchronous casing pipe driving during drilling can be achieved, the hole wall is effectively protected, a reverse circulation method is adopted for conveying rock cores and rock debris, orifice dust pollution can be effectively reduced, and the problems that in complex stratum large-diameter drilling construction, hole forming is difficult, construction efficiency is low, cost is high, and drilling quality is difficult to guarantee are solved.

Description

technical field [0001] The invention relates to a large-diameter down-the-hole hammer reverse circulation following pipe drilling construction device, which belongs to the technical field of surface drilling and rescue. Background technique [0002] In recent years, with the continuous development of mining, although the trend of safety production accidents has weakened, water seepage in old kilns, water inrush from the floor, and roof caving are still the main disasters in mine production. When an accident or disaster occurs, when rescue cannot be carried out underground, the implementation of large-diameter drilling rescue on the ground is the most effective means of rescuing people trapped underground. Therefore, large-diameter drilling rescue occupies a pivotal position in mine emergency rescue. [0003] Rapid drilling on the ground can open a "life channel" for mine emergency rescue, especially the perfect rescue of Chilean mine disaster and Pingyi mine disaster in my c...

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Problems solved by technology

[0005] The object of the present invention is to solve the problems existing in mine emergency rescue drilling technology, and propose a large-diameter down-the-hole hammer reverse circulation following pipe drilling construction device to solve the difficulty in forming holes encountered in large-diameter drilling construction in complex strata. , low construction efficiency, high cost, difficulty in guaranteeing drilling quality, etc.

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