SU1432234A1 - Method of sealing blastholes - Google Patents

Abstract

The invention relates to mining promet and m. Used to strengthen the rocks by injecting bonding structures when a sealer is introduced into the hole. The goal is to reduce the cost of sealing and increase its reliability. When the sealer is inserted into the bore hole at the front end of the central tube 1 between the removable sealing element 2 and the spacer cuff 3 with the support washer 4, an annular layer of plastic material 5 is placed. in the hole. The cuff 3 is fixed by acting on it with axial force from moving forward along the tube 1. The plastic material 5 bends around the collar 6 and presses against the walls of the hole, forming a stop. After the termination of the injection, the seal of the sealer is removed and the tube 1 with the cuff 3 is removed from the hole. In the hole there remains a sealing element 2 fixed by an abutment. 3 il. (Oh (L

Description

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 The invention relates to the mining industry and can be used to strengthen rocks by injecting bonding structures when a sealer is introduced into the hole.

The aim of the invention is to reduce the cost of sealing and increase its reliability.

FIG. 1 shows the arrangement of elements with the introduction of a sealer into the hole; in fig. 2 - the same, after spreading the sealer; in fig. 3 is the same after removing the sealer.

The method is carried out as follows.

When the sealer is inserted into the bore hole at the front end of the central tube 1 between the removable sealing element 2 and the spacer cuff 3 with the support washers 4, the plastic material 5 is provided with an annular layer. The support collar 6 on the central tube 1 keeps the removable sealing element 2 from slipping when inserting the sealer into the hole, and through pipe 7 with the help of a spacer device, compression of the spacer cuff 3 is carried out.

After inserting the sealer, it is placed in the pin with the help of a spacer device, for example a screw pair, while moving the pipe 7, the spacer cuff 3 with the support plates 4 and the plastic material 5 along the central tube I. The plastic material 5 bends around the support collar 6 the central tube and is pressed against the walls of the core, thereby forming an abutment. The spacer cuff 3 with the support washers 4 is mixed along the central tube 1 until one of the washers stops against the support

the flange 6, after that, continuing the movement of the pipe 7, the cuff 3 is pulled apart in the clamp, fixing it.

After the pumping is stopped, the sealer thrust is removed by moving the tube 7 along the central tube 1 back, and the central tube 1 with the spacer device and the spacer cuff 3 is removed from the rod. A removable sealing element 2, fixed by an annular abutment of plastic material 5, is left in the chip (Fig. 3).

The removable sealing element 2 is made of a porous elastic material, such as foam rubber, with a slit opening for the passage of the central tube. After removing the central tube from the core, the slit walls in the removable sealing element are closed, preventing the outflow of the fastening compound from the core.

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Claims (1)

Invention Formula A method of sealing shchurov, including the introduction into the center of the central tube, fixing in it an elastic sealing element and a spacer cuff and removing the central tube with a spacer sleeve, characterized in that, in order to reduce the cost of sealing and increase its reliability, additionally between the sealing element and a spacer cuff is placed with an annular layer of plastic material, and the fixing of the spacer cuff is performed by applying an axial force to it from moving forward along the central tube in this case, the plastic material is compacted and an abutment is formed from it, by means of which the elastic sealing element is fixed. 2. (Pus.3