SU1293360A1 - Injector for plugging composition - Google Patents

Abstract

The invention relates to the mining industry and improves the operational reliability of the injector and the quality of the cementing by providing a circulation method for injecting coarse dispersed solutions. The injector includes coaxially installed discharge pipe (NT) 1 and outlet pipe (FROM) 2. They are covered with a sealer, made in the form of an elongated elastic shell (EO) 5. Its protruding end is fixed by means of a band 4. At the end of the EO 5, near the nozzle, thickening 6, tight to the NT 1. At the suction end of the OT 2 is provided with a perforated nozzle 7. Moreover, the NT 1 is made shorter than the OT 2. The injector 3 is installed in the hole 3. Bandage 4 is placed in the mouth of the hole 3. Through the NT 1 serves the solution. It gets inside EO 5. As the pressure increases, it expands and rests against the walls of the chip 3. After the threshold level of resistance to stretching is exceeded, the thickening 6 moves back and passes the cement slurry into the depth of the hole. The excess solution is squeezed into the perforated nozzle 7, and OT 2 returns to the place of injection of the solution. After completion of the injection, the pressure is relieved. Thickening 6 and EO 5 return to their original position in OT 2, squeezing the remaining solution into the hole 3. The diameter of the injector decreases, and it is easily removed from the pinhole. 2 Il. (L y so oo o: a o

Description

The invention relates to the mining industry, namely to devices for injecting cement slurries into rock masses.

The purpose of the invention is to increase the operational reliability of the injector and the quality of the plugging by providing a circulation method for injecting coarse-dispersant solutions.

FIG. 1 shows an injector before injecting a strengthening solution; in fig. 2 - the same in the process of injection.

The injector for tamponage of the rock massif consists of injection 1 and side 2 pipes, sealer, installed5

2 and passes the cement slurry into the depth of the hole 3. The process of penetration of the solution into the rocks of the massif surrounding the hole 3 outside the elastic shell 5 will begin. Excess solution is squeezed into the perforated nozzle 7 and return to the place of injection of the solution through the discharge pipe 2. Mortar particles and rocks that are larger than the diameter of the perforation hole 8 of the 10- and 7-hole remain in the die 3. After the injection is completed, the pressure is released, the thickening 6 and the whole shell 5 are returned to their original position on the discharge pipe 2, squeezing the remaining solution into the hole 3. The diameter of the injector is reduced, and it is easy

hole in borehole 3, bandage 4. Blower 5 is removed from bore hole 3. pipe 1 is shorter than branch pipe. The proposed design of post injector 2 injector, the sealer is made in the form of tamping of an array of rocks with an elongated elastic casing 5, protruding constant pressure circulating the slewing end of which is fixed by way of itself through small-diameter holes (42 mm), band 4 outside the discharge pipe 1, JQ. If necessary, as a special case, the rest of the shell is placed along the branch pipe 2. At the end is elastic oh shell 5 near the nozzle thickening .vypolneno 6 adherent to the branch

Ponazh can be carried out at a constant flow rate, i.e. clamping method of injection. Injection of the cement slurry by the circulation method allows to significantly improve the quality of filling the cracks and the stiffness ensuring its spreading into 25 tons in the rock massif, to avoid the socket 2, and the shell 5 is made with

the walls of the hole 3 at a pressure less than the threshold pressure for depressurization of the thickening 6 at its end. At the suction end of the bypass pipe 2, a perforated nozzle 7 is fixed. The perforations in the perforation are made with a diameter of not more than the maximum particle size allowed for the bypass pipe 2.

The hardening of rocks with the help of an injector is carried out as follows in the separation of coarse-dispersed solutions (such as cement-sand, etc.).

Claims (1)

Invention Formula An injector for tamponage of the rock mass, including the injection and discharge pipes and the enclosed sealer with a bandage, characterized in that, in order to increase the operational reliability of the injector and the quality of the grouting, An injector for tamponage of the rock mass, including the injection and discharge pipes and the enclosed sealer with a bandage, characterized in that, in order to increase the operational reliability of the injector and the quality of the grouting, zom. A drilled hole 3 is installed to provide a circulating method with an injection injector, placing band 4 at the mouth of the coarse-dispersed solutions, the pipes are aligned, the inner tapping pipe is provided with a perforated nozzle installed on its suction end, and the sealer is made in the form of an elastic sheath with an ocular 3 located. Through the pressure pipe 1, a cement slurry is fed under pressure, which falls inside the elastic sheath 5. As the pressure increases, the elastic sheath 5 expands After the pressure of the solution exceeds the threshold level of resistance to stretching of the thickening 6, the latter moves away from the wall of the diverting nozzle with a thickening that fits tightly to the discharge pipe, and the outer pressure pipe is shorter than the outlet. 2 and passes the cement slurry into the depth of the hole 3. The process of penetration of the solution into the rocks of the massif surrounding the hole 3 outside the elastic shell 5 will begin. Excess solution is squeezed into the perforated nozzle 7 and return to the place of injection of the solution through the discharge pipe 2. Mortar particles and rocks that are larger than the diameter of the perforation 8 of the nozzle 7 remain in the die 3. After the injection is completed, the pressure is relieved, the thickening 6 and the whole shell 5 are returned to their original position on the discharge pipe 2, squeezing the remaining solution into the hole 3 The diameter of the injector decreases, and it is easy removed from the hole 3. The proposed design of the injector can be performed at a constant flow rate, i.e. clamping method of injection. Injection of the cement slurry by the circulation method allows to significantly improve the quality of filling cracks and cavities in the rock massif, to avoid stratification of coarse-dispersed solutions (such as cement-sand, etc.). Invention Formula An injector for tamponage of the rock mass, including the injection and discharge pipes and the enclosed sealer with a bandage, characterized in that, in order to increase the operational reliability of the injector and the quality of the grouting, The nozzle is thickened tightly adjacent to the injection pipe, with the external pressure pipe being shorter than the discharge pipe. (Reg. 2