Water inrush plugging method for still water hourglass drilling

Abstract

The invention relates to the field of underground coal mine water bursting accident management and provides a method and a device for hydrostatic sandglass based bore water bursting blockage. The device comprises an upper high-pressure sluice valve, an aggregate drum, a lower high-pressure sluice valve and a grouting plate. The upper end and the lower end of the aggregate drum are connected with the upper high-pressure sluice valve and the lower high-pressure sluice valve respectively, and the grouting plate is detachably and fixedly connected to the upper high-pressure sluice valve. The method and the device for hydrostatic sandglass based bore water bursting blockage have the advantages that structural simplicity and low manufacturing cost are realized; by a hydrostatic sandglass technique, non-pressure self-sinking quick filling of grouting aggregates is successfully realized, the technical problem of loading of the grouting aggregates is efficiently solved, and economical blockage management of bore water bursting is realized.

Description

technical field [0001] The invention relates to the field of underground coal mine water inrush accident treatment, in particular to a still water hourglass drilling water inrush sealing method. Background technique [0002] Borehole water inrush is the most common and also the only man-made water inrush channel among the five main water inrush channels in mines. It has the characteristics of hidden water gushing points, deep burial, difficult plugging and treatment, long impact period and wide range, and difficult investigation of hidden danger points. Especially when planar water gushing is formed on the bottom plate, water damage control is even more difficult. [0003] Conventional drilling water inrush plugging treatment methods are single, the treatment process is time-consuming and labor-intensive, the aggregate loading process is complicated, difficult, and the effect is poor. The limestone water pressure on the No. The effective water blocking capacity of the aquif...

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Problems solved by technology

It has the characteristics of hidden water gushing points, deep burial, difficult plugging and treatment, long impact period and wide range, and difficult investigation of hidden danger points. Especially when the planar water gushing of the bottom plate is formed, water damage control is more difficult

[0003] Conventional drilling water inrush plugging treatment methods are single, the treatment process is time-consuming and labor-intensive, the aggregate loading process is complicated, difficult, and the effect is poor. The limestone water pressure on the No. The effective water blocking capacity of the aquifer, in order to eliminate the threat of water inrush from the floor, more than 100 grouting reinforcement holes, water discharge holes, inspection and verification holes are constructed underground every year, and most of these holes will communicate with the strong water content of the floor If the hole is poorly sealed or affected by mining damage, there will be a serious threat of water inrush from the borehole, which will not only significantly affect the safe production of the mine, but also lead to a huge investment in drainage

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