Water burst blast hole plugging method

Abstract

A water burst blast hole plugging method comprises the steps of (1) stopping drilling instantly and withdrawing a drill rod when water burst occurs during blast hole drilling; (2) ejecting a high-pressure rubber expansion rubber hose into the bottom of a hole with a drilling machine, wherein the two ends of the high-pressure rubber expansion rubber hose are sealed, and a check valve and a water injection rubber hose are installed at one end of the high-pressure rubber expansion rubber hose; (3) injecting pressure water into the high-pressure rubber expansion rubber hose with a high-pressure pump by means of the water injection rubber hose to enable the high-pressure rubber expansion rubber hose to be large enough to abut against the blast hole; (4) withdrawing the drilling rod; (5) conducting grout sealing on the blast hole; (6) stop grouting after the blast hole is filled with grout. The method well achieves hole plugging when water burst occurs during blast hole drilling which is conducted in an area with abundant underground water and is highly targeted, the high-pressure rubber expansion rubber hose is expanded after reaching the bottom of the hole, water burst is prevented from being continued through the blast hole, the portion, between the high-pressure rubber expansion rubber hose and the opening of the blast hole, of the blast hole does not contain gush water any more, cement mortar grout sealing can be conducted on the blast hole conveniently, sealing is easy and convenient, construction speed is high, quality is high, grout loss is avoided, plugging effect is good, and cost is low.

Description

technical field [0001] The invention relates to a water blocking method when water gushes out during the drilling of blastholes, in particular to a water blocking method used in areas with abundant groundwater or on the outside of surrounding rocks where rivers, lakes, reservoirs, etc. occur during the drilling of blastholes. Water blocking method when water gushes. Background technique [0002] During the drilling construction of blastholes used for blasting in areas with rich groundwater or on the outside of surrounding rocks for rivers, lakes, reservoirs, etc. , In reservoirs, groundwater or water from rivers, lakes, and reservoirs will gushes out of blastholes, causing subsequent construction to fail normally, and the blastholes for gushing water must be blocked. The current conventional plugging method is to use a wooden plug or a plug for grouting. Due to the existence of pressure water in the hole, the hole of the water gushing hole can only be blocked, and then a ...

AI Technical Summary

Problems solved by technology

[0002] During the drilling construction of blastholes used for blasting in areas with rich groundwater or on the outside of surrounding rocks for rivers, lakes, reservoirs, etc. , In reservoirs, groundwater or water from rivers, lakes, and reservoirs will gushes out of blastholes, resulting in the failure of subsequent construction, and the blastholes where the water gushes must be blocked

The current conventional plugging method is to use a wooden plug or a plug for grouting. Due to the existence of pressure water in the hole, the hole of the water gushing hole can only be blocked, and then a hole is opened next to it for pressure grouting. Because the water gushing hole It is connected with the underground water channel or the rivers, lakes, and reservoirs outside, which makes it difficult to block the water gushing hole, and it is difficult to fill the water gushing hole with slurry. The hole is blocked for a long time, and the loss of slurry is also large. The plugging effect is poor and the cost is high, and once the plugging quality is not good, it will directly affect the forming quality of other nearby blastholes, thereby affecting the charge of the blasthole and the blasting effect of rocks, and resulting in a substantial increase in costs