Device and process for filling aggregate into stratum cavities through surface drilling

Abstract

The invention relates to a device and a process for filling aggregate into stratum cavities through surface drilling. The device comprises a hollow drill column extending into a drilled hole; a spraying head is arranged at the lower end of the drill column; a water joint is arranged at the upper end of the drill column, and is connected with an injection pump through a high-pressure rubber tube; an aggregate belt conveyor, a gyrator and a water pipe are arranged in the opening of the drilled hole; the drill column is inserted into the gyrator; the gyrator is connected with a drilling machine; the water pipe is connected with a water pump, so as to supply water to the drilled hole; and the aggregate belt conveyor conveys aggregate to the drilled hole. The invention has the advantages that various accidents generated when surface drilling is conducted on the stratum cavities are eliminated; and when aggregate is added during surface drilling, the drill column swings and shuttles, and aggregate entering into the drilled hole is washed out by water to a mined out space, so as to ensure that aggregate enter into the cavities smoothly and the drilling construction is safe and smooth.

Description

technical field [0001] The invention relates to a drilling construction process, in particular to a device and a process for filling aggregates into stratum cavities through ground drilling, belonging to the technical fields of mines, traffic tunnels, water conservancy and hydropower and other geological exploration, water damage prevention, capital construction and other technical fields . Background technique [0002] At present, mine water hazard accidents, especially coal mine water hazard accidents, are one of the accidents that affect the safety of employees and the economic benefits of mines. Coal mine water penetration accidents continue to occur every year. In the old mining area where the lower group of coal is mined and threatened by the Ordovician limestone water in the coal seam floor, the upper group of coal has formed the coal seam goaf. When the hydrological observation hole of the coal seam floor aquifer is formed under the ground construction, and the wate...

AI Technical Summary

Problems solved by technology

When the hydrological observation hole of the coal seam floor aquifer under the ground construction and the mine inrush water, the water-filled aquifer is constructed with ground grouting and water blocking drilling, and the coal seam floor is constructed with grouting reinforcement and reconstruction drilling and drainage is constructed on the ground When drilling for drilling, cable drilling and other projects, the drilling will inevitably pass through the goaf of the upper group of coal, and the existence of the goaf brings great difficulties to the drilling construction; in the southern area where karst karst is developed, construction geological exploration Larger karst cavities are often encountered when drilling; when drilling in these cavities, there are often drilling deviation accidents, drilling accidents caused by the collapse of the drilling block, accidents of the drill pipe being stuck at the roof of the cavity, and drilling accidents in the cavity. Drilling accidents caused by roof slotting, drilling accidents where the drill pipe was thrown off in the cavity, and accidents where the isolation sleeve was partially broken or tripped in the cavity, etc.

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