KR200331997Y1 - Grouting liquid injection apparatus having the first and the second members, mixing guide and counterflow preventing valve - Google Patents

Abstract

The present invention is carried out to stabilize the ground by reinforcing the bearing strength and preventing leakage of soft ground or grouting the cracks and pupils formed in the tunnel rock while excavating the rock to form a tunnel. A grouting method using a grouting liquid injection device equipped with a mixing guide for mixing the grouting liquid used in the grouting liquid and a mixing guide and a non-return valve for preventing backflow of the grouting liquid,

The grouting liquid injector is connected to a grouting tube through which the grouting liquid is transferred to an upper fastening portion of the upper grouting rod, and a lower fastening portion of the upper grouting rod of the intermediate grouting rod is provided with a device for smoothly mixing the grouting liquid. The upper fastening portion of the lower grouting rod is inserted into the upper fastening portion and screwed, and the upper fastening portion of the lower grouting rod is provided with a non-return valve for preventing backflow of the grouting liquid injected into the ground in the lower fastening portion of the intermediate grouting rod. A bit for digging the ground is mounted in the lower fastening portion of the lower grouting rod, and an upper fastening portion of the excavating rod having an injection hole for injecting grouting liquid into the ground is inserted into and screwed in.

Description

Grouting liquid injection apparatus having the first and the second members, mixing guide and counterflow preventing valve}

The present invention is carried out to stabilize the ground by reinforcing the bearing strength and preventing leakage of soft ground or grouting the cracks and pupils formed in the tunnel rock while excavating the rock to form a tunnel. A grouting method using a grouting injection device equipped with a first mixing guide, a mixing guide for mixing the grouting liquid for use in the grouting liquid, and a non-return valve for preventing backflow of the grouting liquid,

The grouting liquid injecting device is connected to the upper fastening portion of the upper grouting rod is a grouting tube for transporting the A drug and the B medicine, respectively, consisting of a final material and a fastener as grouting liquid, the lower fastening portion formed on the upper grouting rod Backflow of the grouting liquid injected into the ground in the upper fastening portion of the intermediate grouting rod installed with a device for smoothly mixing the grouting liquids conveyed from the grouting pipe, respectively, and injected into the ground in the lower fastening portion of the intermediate grouting rod. An upper fastening part of the lower grouting rod having a backflow prevention valve installed therein is inserted and screwed therein, and a bit for digging the ground is mounted in the lower fastening part of the lower grouting rod, and is used for pressure-injecting grouting liquid into the ground. Upper sieve of the drilling rod formed with an injection hole The joint is inserted and screwed in.

The present invention reinforces the ground by using the mixing guide device for smoothly mixing the grouting liquid in the grouting liquid injector and the injector equipped with a backflow preventing device for preventing the grouting liquid injected into the ground from flowing back into the infusion pipe. And it aims to provide a technology that can effectively perform leakage blocking.

Conventional techniques for devices for grouting work on the ground have been variously developed and currently used. As a technology currently applied and used, the present invention will be described with reference to the technology filed by the applicant.

Utility Model Application No. 2002-63629, filed as a grouting device on October 17, 2002, Utility Model Application No. 2002-53387, filed on September 5, 2002, as a direct-hole grouting device on December 11, 2001 No. 255662 of Direct Grouting Grouting Apparatus, No. 256641 of Grout Chemical Injection Device registered utility model dated Dec. 11, 2001, and No. 2001-10 of the grouting injection device filed on January 2, 2001. No. 226656 of the grouting injection device registered as a utility model on March 28, 2001, has continuously developed and used these devices. However, the above-described techniques prevent the mixing of the grouting liquid in the injection device so that the grouting liquid is hardened and prevents the grouting flow through the grouting liquid and prevents the backflow of the grouting liquid. Although the valve was used, the spring and the ball used in the valve did not smoothly interact with each other. Therefore, the situation of generating a lot of problems in the progress of the operation such as backflow or the injection port was blocked during injection.

The present invention has been proposed to improve the above problems, the first and second mixing guides are mounted on the upper and lower portions of the mixing guide in order to efficiently mix the grouting liquid A drug and the B drug in the grouting liquid injection device, and the mixing Check valve to prevent back-injected grouting liquid back into the injection device when the grouting liquid is injected into the ground through an injection hole formed at the tip of the injection device and then the pressure is removed to move to the next step Efficient and economical grouting by installing a non-return valve that can act as a stabilizer to block the leakage while strengthening the bearing capacity of the ground to stabilize the ground and to support the structure efficiently even after installing the structure. An injection device is provided.

1 is a perspective view showing the overall configuration of the grouting liquid injection device of the present invention

2 is a cross-sectional view of the grouting liquid injection device of FIG.

Figure 3 is a cross-sectional view of the intermediate grouting rod of the grouting liquid injection device of the present invention.

Figure 4 is a perspective view of the first and second mixing guide installed above and below the mixing guide portion formed in the intermediate grouting rod of the grouting liquid injection device of the present invention.

Figure 5 is a cross-sectional view for showing a mixing guide portion formed in the intermediate grouting rod of the grouting liquid injection device of the present invention.

Figure 6 is a view showing a non-return valve installed in the lower grouting rod of the grouting liquid injection device of the present invention.

<Description of the symbols for the main parts of the drawings>

10; Grouting liquid injection device 20; Upper grouting rod

21; Lower fastener 22; Upper fastening

30; Intermediate grouting rod 31; Upper fastening

32; Lower fastening portion 33; Wing surface

34; Circular body portion 35; Guide wing

36; Space

40; Lower grouting rod 41; Upper fastening

42; Bottom fastening

50; Excavation rod 51; Upper fastening

52; Bit 53; Injection hole

60; First Mixing Guide

70; Second Mixing Guide

80; Non-return valve 81; spring

82; Round iron plate 83; nut

84; Support shaft 85; Through hole

86; Support 88; Magnification

89; Elastic ring member

90; A mixing guide 91; Taper part

92; Mixing section

100; Grouting liquid mixing direction

In the present invention, a grouting tube (not shown) to which the grouting liquid is transferred is fastened to the upper fastening portion 22 of the upper grouting rod 20, and the lower fastening portion 21 of the upper grouting rod 20 is a grouting liquid. Is inserted into the upper fastening portion 31 of the intermediate grouting rod 30 in which the device for smoothly mixing the screw is inserted and injected into the ground in the lower fastening portion 32 of the intermediate grouting rod 30. The upper fastening portion 41 of the lower grouting rod 40, in which the backflow prevention valve 80 is installed to prevent backflow of the grouting liquid, is inserted and screwed into the lower fastening portion 42 of the lower grouting rod 40. The upper fastening portion 51 of the excavating rod 50, which is formed with a bit 52 for drilling the ground and the injection hole 53 for pressure injection of the grouting liquid into the ground, is inserted and screwed It has its features.

The grouting construction method performed by using the grouting liquid injection device 10 to improve bearing strength or order function in the ground is as follows.

a) examining the characteristics of the ground to be grouted and selecting a grouting point based on the surveyed data;

b) assembling the grouting liquid injector 10 for the grouting, and fastening the grouting tube (not shown) of the double pipe to which the grouting liquid is transferred to the upper fastening portion 22 of the upper grouting rod 20;

c) the upper grouting in the upper fastening portion 31 of the intermediate grouting rod 30 in which the first and second mixing guides 60 and 70 are provided in the tapered portions 91 formed on the upper and lower portions of the mixing guide portion 90. Inserting the lower fastening portion 21 of the rod 20 is screwed;

d) inserting and screwing the upper fastening portion 41 of the lower grouting rod 40 in which the non-return valve 80 is installed in the lower fastening portion 32 of the intermediate grouting rod 30;

e) the excavating rod 50 having a bit 52 for digging the ground in the lower fastening portion 42 of the lower grouting rod 40 and having an injection hole 53 for injecting grouting liquid into the ground. Inserting the upper fastening portion 51 of the) to be screwed to complete the assembly of the grouting liquid injection device 10; And

f) The grouting operation is performed by installing the assembled grouting liquid injector 10 at the grouting point and carrying out excavation and grouting.

Hereinafter, with reference to the accompanying drawings the specific configuration and operation of the present invention in detail as follows.

1 is a perspective view showing the overall configuration of the grouting liquid injecting apparatus of the present invention, the upper fastening portion 22 of the upper grouting rod 20 is a double pipe that is transported A drug and B medicine made of a grouting liquid and a fastener The grouting pipe of the intermediate grouting rod (not shown) is fastened, and the lower fastening portion 21 of the upper grouting rod 20 is provided with a device for smoothly mixing the grouting liquid transferred from the grouting pipe, respectively. The backflow prevention valve 80 is inserted into the upper fastening portion 31 of the 30 and screwed, and prevents the backflow of the grouting liquid injected into the ground in the lower fastening portion 32 of the intermediate grouting rod 30. The upper fastening portion 41 of the lower grouting rod 40 is installed is screwed, the ratio for excavating the ground in the lower fastening portion 42 of the lower grouting rod 40 52 is mounted and the upper fastening portion 51 of the excavating rod 50 having the injection hole 53 for injecting the grouting liquid into the ground is inserted and screwed to form the grouting liquid injector 10. Will be.

FIG. 2 is a cross-sectional view of the grouting liquid injector of FIG. 1, and the description of the configuration is omitted in FIG. 1, and a mixing guide mounted on the intermediate grouting rod 30 and the lower grouting rod 40 is shown. The portion 90 and the non-return valve 80 will be described below.

First, the mixing guide unit 90 and the first and second mixing guides 60 and 70 provided above and below the mixing guide unit will be described.

The mixing guide portion 90 serves to mix the liquid A and the liquid B, which is the grouting liquid injected into the double tube, and the upper and lower fastening portions formed at predetermined lengths on the upper and lower portions of the intermediate grouting rod 30 for efficient mixing. A funnel-shaped tapered portion 91 is formed between the upper and lower portions 31 and 32, and a diameter of the funnel-shaped mixing portion 92 is formed between the rods 31 and 32, the diameter of which is much smaller than the diameter of the rod. The first and second mixing guides 60 and 70 are respectively installed on the tapered portion 91, but the protruding guide vanes 35 having the inclined surface 33 in a predetermined direction on the first mixing guide 60 are the mixing portions. A guide installed in a direction opposite to a predetermined direction introduced to the inclined surface 33 of the guide vane portion 35 formed on the first mixing guide 60 in the second mixing guide 70 and installed toward the 92; Wings 35 also face the mixing section 92 The grouting solution, which is installed so as to pass through the intermediate grouting rod 30, passes through the first mixing guide 60, rotates in a predetermined direction 100, and rotates the mixing section 92, and the mixed grouting solution is primarily mixed. While flowing through the guide vanes 35 formed in the direction opposite to the inclined surface 33 of the guide vanes 35 of the first mixing guide 60 formed in the second mixing guide 70, the inflow is carried out. The grouting liquid is suddenly changed into the flow in the opposite direction 100 while passing through the second mixing guide 70, the vortex is generated and the grouting liquid is mixed again, so that the complete mixed grouting liquid is installed on the lower grouting rod 40. Pushing the tapered enlarged portion 88 provided on one side of the support shaft 84 of the non-return valve 80 to the pressure to the spring 81 is contracted, the enlarged portion 88 is the inside of the excavating rod 50 pipe Pushed When it comes to that the mixed grouting fluid to escape to the ground and grouting fluid passing through the injection hole 53 formed in the drilling rod (50) the pressure to be injected.

3 is a cross-sectional view of the middle grouting rod of the grouting liquid injection device of the present invention, as shown in Figure 2 of the upper and lower fastening portion 31, 32 formed in a predetermined length in the upper and lower portions of the intermediate grouting rod 30 A funnel-shaped taper portion 91 is formed between the upper and lower sides, and a diameter of the funnel-shaped taper portion 91 is formed between the portions 92 having a predetermined length much smaller than the diameter of the rod. Each of the first and second mixing guides 60 and 70 is installed, but the protruding guide vanes 35 having the inclined surface 33 in a predetermined direction on the first mixing guide 60 face the mixing unit 92. The guide vanes 35 which are installed and protrude in a direction opposite to a predetermined direction introduced to the inclined surface 33 of the guide vanes 35 formed on the first mixing guide 60 in the second mixing guide 70. To face the mixing section 92 The grouting liquid having a grouting liquid mixing direction 100 that rotates in a predetermined direction when the grouting liquid passing through the intermediate grouting rod 30 passes through the first mixing guide 60 is disposed in the mixing unit 92. The grouting liquid first mixed while turning the guide blades 35 formed in the opposite direction to the inclined surface 33 of the guide blades 35 of the first mixing guide 60 formed on the second mixing guide 70. While passing through the mixing section 92 while passing through the mixing grout 92, the grouting liquid flows through the second mixing guide 70 suddenly in the flow of the grouting liquid mixing direction 100 in the opposite direction When the vortex is generated and the grouting liquid is mixed again, it is mixed to prepare a completely mixed grouting liquid.

Figure 4 is a perspective view of the first and second mixing guides installed above and below the mixing guide portion formed in the middle grouting rod of the grouting liquid injection device of the present invention, the first and second mixing guides (60, 70) is a circular body portion ( 34 and the guide wing portion 35 having a predetermined interval inclined surface 33 in a predetermined direction is formed extending at a predetermined interval from the body portion 34, the guide wing portion 35 is While forming the space portion 36 between the formed and the grouting liquid is rotated in the same direction as the inclined direction of the inclined surface 33 formed on the guide blade portion 35 to be guided to the mixing unit 92, The inclination directions of the inclined surfaces 33 formed on the guide vanes 35 protruding from the mixing guide 60 and the second mixing guide 70 are different from each other. In addition, the diameter of the circular body portion 34 determines the diameter so that the funnel-shaped tapered portion 91 formed on the inside of the intermediate grouting rod 30 is mounted on the starting portion.

The first and second mixing guides 60 and 70 manufactured as described above have a funnel-shaped taper portion 91 between the upper and lower fastening portions 31 and 32 formed at a predetermined length in the upper and lower portions of the intermediate grouting rod 30. A first and second tapered portions 91 of the mixing guide 90 of the mixing guide 90 formed between the upper and lower sides thereof, the diameter of which is composed of a mixing portion 92 having a predetermined length much smaller than the diameter of the rod. , Install two mixing guides (60, 70) so that the protruding guide vanes (35) having an inclined surface (33) in a predetermined direction on the first mixing guide (60) facing the mixing section (92) The guide blade portion 35 protruding in a direction opposite to a predetermined direction introduced to the inclined surface 33 of the guide blade portion 35 formed on the first mixing guide 60 in the second mixing guide 70 is also the mixing portion. Graw passing through the intermediate grouting rod (30) by facing toward the (92) The grouting liquid having a grouting liquid mixing direction 100 that rotates in a constant direction when the tinging liquid passes through the first mixing guide 60 is rotated in the mixing unit 92, and the grouting liquid mixed first is mixed. It has a constant grouting liquid mixing direction 100 while passing through the guide vanes 35 formed in the direction opposite to the inclined surface 33 of the guide vanes 35 of the first mixing guide 60 formed in the guide 70 The introduced grouting liquid is suddenly changed into the flow of the grouting liquid mixing direction 100 in the opposite direction as it passes through the second mixing guide 70, and the grouting liquid is mixed again when the grouting liquid is mixed again, thereby completely mixing the grouting liquid. It will serve to manufacture.

Figure 5 is a cross-sectional view for showing the mixing guide portion formed in the middle grouting rod of the grouting liquid injection device of the present invention, between the upper and lower fastening portions 31, 32 formed in a predetermined length in the upper and lower portions of the intermediate grouting rod 30 The funnel-shaped tapered portion 91 is formed up and down, and the diameter is formed between the mixing portion 92 having a predetermined length much smaller than the diameter of the rod therebetween.

The first and second mixing guides 60 and 70 are respectively installed on the funnel-shaped taper 91 to mix the grouting liquid.

6 is a view showing a non-return valve installed in the lower grouting rod of the grouting liquid injector of the present invention, wherein a tapered enlarged portion 88 is installed at one end of the support shaft 84, but the tapered enlarged portion ( The support shaft 84 extending from the narrow cross-section of the 88 is larger than the diameter of the support shaft so that the support 86 having a central hole is formed up and down and inserted into the center of the plate in which the elastic ring member 89 is formed. A spring is formed so that the support 86 and the circular iron plate 82 are supported at a portion where the support 86 and the circular iron plate 82 meet each other, while passing through the center of the circular iron plate 82 having a plurality of through holes 85 connected to the lower side of the support 86. It is a non-return valve 80 which inserts 81 into the said support shaft 84, and fixes the said spring 81 to the other end of the said support shaft 84 with the nut 83. As shown in FIG.

The non-return valve 80 manufactured as described above is installed on the lower grouting rod 40, but is installed to be seated on the upper surface of the excavating rod 50 on one side of the support 86 through which the enlarged portion 88 penetrates. When the grouting liquid mixed in the intermediate grouting rod 30 has a pressure and enters the lower grouting rod 40, the tapered enlarged portion 88 is pushed into the excavating rod 50 by the pressure. When the grouting fluid passes through the injection hole 53 while the grouting liquid passes through the center hole formed in the support 86 to be slightly larger than the diameter of the support shaft 84, the injection hole 53 is injected into the ground. In order to prevent the grouting liquid from entering the grouting liquid injector 10 again, the injection of the pressure is stopped once the grouting operation is completed by one step. As the pressure pushing the 81 is removed, the spring 81 is returned to its original state, and the grouting liquid that the tapered portion of the enlarged portion 88 blocks the central through hole formed in the center of the support 86 goes out again into the apparatus. This will prevent reentry.

In addition, the intermediate grouting rod 30 including the first and second mixing guides 60 and 70 and the mixing guide unit 90 may be applied to the grout chemical solution injector introduced in Utility Model Registration No. 256461 not a direct drilling type. Note that the applied chemical liquid spinning member can be used in place of the formed chemical liquid mixing member.

The grouting liquid injector according to the present invention is a grouting liquid mixed with the first and second mixing guides and the mixing guide part of the grouting solution of the grouting liquid A and B, and the homogeneous and fully mixed grouting liquid by turning and vortex rotation. Efficient and economical grouting operation by preventing the grouting liquid injected into the ground from reflowing once the grouted ground can obtain the required strength and performance by eliminating the problem which has been pointed out as a problem by making it It is a very good grouting injection device that makes this happen.

Claims (6)

In the grouting liquid injecting device used for grouting work performed to improve the bearing capacity or order function on the ground, The upper fastening portion of the upper grouting rod is fastened to a double tube grouting tube to which grouting liquid is conveyed, and the lower fastening portion of the upper grouting rod is in the upper fastening portion of the intermediate grouting rod in which a device for smoothly mixing the grouting liquid is installed. The upper grouting rod of the lower grouting rod is inserted and screwed into the lower grouting rod to prevent the backflow of grouting liquid injected into the ground in the lower fastening portion of the intermediate grouting rod. A grouting grouting liquid injection device, characterized in that the upper fastening portion of the drilling rod having a bit for drilling the ground and an injection hole for injecting grouting liquid into the ground is inserted into and screwed into the lower fastening portion of the first pipe. , Two-mix guide and mixing guide and backflow Grouting liquid injection device equipped with a branch valve. The method of claim 1, The first and second mixing guides and mixing in the double pipe, characterized in that the device is installed on the intermediate grouting rod and installed so that the grouting liquid is mixed smoothly, the mixing guide portion and the first and second mixing guides installed on the upper and lower portions of the mixing guide portion. Grouting fluid injector with guide and non-return valve. The method according to claim 1 or 2. The mixing guide part is formed between the upper and lower fastening portions formed in a predetermined length in the upper and lower portions of the intermediate grouting rod, the tapered portion of the funnel shape is formed up and down, and the diameter is formed of a mixing portion of a predetermined length much smaller than the diameter of the rod between A grouting liquid injector equipped with a first and second mixing guide, a mixing guide, and a non-return valve in a double pipe, characterized in that the first and second mixing guides are respectively installed in the funnel-shaped tapered portion. The method according to any one of claims 1 to 3, The first and second mixed guides have a circular body portion, and have a predetermined distance from the body portion and protrude outward a plurality of guide wings having an inclined surface in a predetermined direction, the space portion between the guide wings formed Grouting liquid in which the first and second mixing guides and the mixing guide and the non-return valve are installed in the double pipe, characterized in that the grouting liquid is formed to exit while rotating in the same direction as the inclined direction of the inclined surface formed on the guide vane. Device. The method of claim 4, wherein The inclined surfaces formed on the guide blades protruding from the first and second mixing guides are formed differently so that they are installed on the tapered portions formed on the upper and lower portions of the mixing guide to allow mixing by vortex while the grouting liquid passes. A grouting liquid injector equipped with a first and second mixing guide, a mixing guide, and a non-return valve in a double pipe having a characteristic feature. The method of claim 1, The non-return valve may be provided with a tapered enlarged portion at one end of the support shaft, but a support shaft extending from the narrow end of the tapered enlarged portion may have a support having a central hole formed larger than the diameter of the support shaft, and having an elastic ring member in the middle. Inserting a spring into the support shaft so that the support and the round iron plate are supported at a portion where the support and the round iron plate meet each other while being inserted into the center of the plate on which the plurality of through holes connected to the lower side of the support are formed. A grouting liquid injector equipped with first and second mixing guides, a mixing guide and a non-return valve in a double pipe, characterized in that the spring is fixed to the other end of the support shaft by a nut.