SU1089274A1 - Method of fighting rock bursts - Google Patents

Abstract

METHOD OF COMBATING MINING IMPACT, including drilling a well, sealing a part of it with a hose leap sealer and injecting water into the formation through a filtering part of the well that is different in order to increase the efficiency of drilling and sealing the well drilled in the concentration zone a part of the well is filled with a reinforcing mixture and, through the plug formed after the mixture has hardened, the well is drilled with a design diameter and depth, while the well sealing area The s are filled with a water resistant fortification (L C a mixture, and its filtering part is a mixture soluble in water, which is washed out after the end of drilling;

Description

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FIELD OF THE INVENTION The invention relates to mining and can be used in the processing of coal seams, dangerous for mining shocks.

There is a known method of dealing with rock bursts, concluding in drilling wells, sealing a certain length of them with a quick-sliding self-expansion to the Cim element and injecting water through these wells into the coal seam lj. .

The disadvantage of the known method is that the drilling of a well in the stress concentration zone due to the clamping or breaking of the drilling tool does not ensure the necessary depth of drilling.

Closest to the present invention is a method of dealing with rock bursts, consisting in the burbnia of the well, sealing, part of it with a hose sealer and pumping water into the formation through the filtering portion of the well 2.

However, the known method does not provide the necessary depth in the zone of well stress stress concentration and reliable sealing.

The purpose of the invention is to increase the efficiency of the method by increasing the reliability of drilling and sealing the well.

This goal is achieved in that according to the method of dealing with rock bursts, including drilling a borehole, sealing a part of it with a hose sealer and injecting water into the formation through the filtering part of the well, testing part of the well in the zone of stress concentration is filled with after the mixture has hardened, the cork continues drilling; the designed diameter and depth, and the well sealing area

fill it with a water-resistant reinforcing mixture, and filtering part of it with a solution of water-containing mixture, which is washed out after the end of drilling.

FIG. 1-4 show the sequence of the method for dealing with rock bursts.

From the bottom of the production, a borehole 1 with a nominal diameter of 45 mm is drilled. At the entry of well 1 in the zone of stress concentration at a depth of 2-3 m, a cavity 2 is formed with a length of about 1 m and a diameter much larger than the diameter of the sealer. After removal from the well, the cavity is filled with a reinforcing waterproof mixture | S, resulting in a plug 3. After the mixture hardens, a hole 45 mm in diameter is drilled through the plug 3, and when it enters the stress concentration zone, a large cavity again forms. diameter, which is filled with reinforcing mixture. These operations are repeated until the stress concentration zone 4 is re-drilled. Thereafter, a well with a diameter of 45 mm is drilled to the design depth. At the site of sealing the well 5, the cavity is filled with a waterproof reinforcing mixture 6, for example made of polyurethane resin and water, and at the filtering section 7, a solution of water in the water is reinforced with mixture 8, for example gypsum concrete, which is washed out after the end of drilling.

Then the well is sealed with a hose seal 9 of type GAS-45 and water is injected into the formation.

Using the proposed method of dealing with rock bursts allows to increase the efficiency and reliability of drilling and sealing wells in the stress concentration zone.

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Claims (1)

METHOD FOR COMBATING ROCK HITS, including drilling a well, sealing part of it with a hose sealant and injecting water into the formation through the filtering part of the well, characterized in that, in order to increase the efficiency of the method by increasing the reliability of drilling and sealing the well, drilled in the concentration zone of stresses, part of the well is filled with a reinforcing mixture, and through the plug formed after hardening of the mixture, drilling of the well of design diameter and depth is continued, while the sealing section of the well is filled lnyayut waterproof reinforcing mixture and filtering part dissolving in water a mixture which is washed away after the drilling;