KR20020035082A - JSP and its device - Google Patents

Abstract

PURPOSE: A high-pressure injection method is provided to form an improvement pillar having the designed diameter and hardness. CONSTITUTION: The high-pressure injection method comprises the steps of: installing a high-pressure injection machine; excavating the ground by the rotation of many high-pressure injection rods(1) and the operation of an excavation bit(2) attached to the front of the high-pressure injection rod(1), wherein a swivel is fixed to a coupling of the high-pressure injection machine and an airfoil high-pressure injection rod(5) is connected to the lower end of high-pressure injection rods(1) connected to the swivel to the necessary depth for excavation; and forming an improvement pillar by jetting air and admixture to a jet orifice(9) formed on both ends of an upper excavating wing(8) by rotating the airfoil high-pressure injection rod(5), jetting cement and air to the jet orifice(9) formed on both ends of a lower excavation wing(11), and stirring the particles of the crushed ground, cement and admixture by the upper excavating wing(8) and the lower excavation wing(11).

Description

High pressure injection method and its device {JSP and its device}

The present invention relates to a high-pressure injection injection method and apparatus for crushing the ground structure of the ground to improve the soft ground and mixing and stirring the crushed granules, cement and admixture to form an improved column of columnar solidified body, Preferably, the diameter of the cutting hole is increased by connecting a plurality of high-pressure injection rods in which air, admixtures and cement supply pipes are individually installed, and connecting airfoil high-pressure injection rods having excavation bits and excavation wings installed at the bottom thereof. The present invention relates to a high-pressure injection injection method and apparatus for uniformly stirring granules, cement, and admixture to produce high-quality refined liquor.

Conventional high-pressure injection injection method is to excavate the ground to a certain depth with the excavation bit installed at the lower end of the high-pressure injection rod formed in the multi-layer pipe type, and to inject the cement and admixture by transferring the high-pressure injection rod to the upper side from the bottom of the cutting hole to improve refined liquor. Generated.

The conventional multilayer pipe type high-pressure injection rod is to use a tube of different diameter, the small diameter tube is inserted into the inside of the large diameter tube to send the fluid to the center of the smallest diameter tube, the minimum diameter It has a structure for sending another fluid into the space formed by the outer wall surface of the tube and the inner wall surface of the tube of the next size, and a spacer having a communication hole for each predetermined length is installed to maintain a constant interval between the walls of the tube. The lower end of the high-pressure jet rod is equipped with a nozzle for discharging an excavation bit and cement at an end thereof so that the excavation bit performs a cutting operation and the nozzle sprays the cement and the admixture after cutting. In addition, the connecting structure when the high-pressure injection rod is connected to a plurality of cutting holes according to the depth of the hole is used by connecting the male screw to one end of the outermost pipe of both ends of the high-pressure injection rod, and the female screw on the other end to be screwed.

However, in the conventional high pressure injection injection method, the diameter of the cutting hole is reduced by cutting the diameter of the high pressure injection rod, so that the specificity of the ground such as the hardness of the ground is not uniform at the time of the formation of the modified column, so the penetration range of the admixture is uneven. There is a problem that can not be produced by the improved strain to the diameter designed to be a problem.

In addition, cement and admixture are injected at high pressure to produce modified liquor, and granules and admixture, such as cement and admixture, which are crushed by the injection pressure, are agitated with each other at the initial stage of spraying to start solidification, thereby producing modified liquor. The stirring action consists of the pure injection pressure and the rotational force of the high pressure injection rod, but the rotation of the high pressure injection rod must maintain a certain number of revolutions in order to produce a good modified column. Since the sieving body sprayed at a certain pressure decreases the kinetic energy after crushing the ground, its energy is insufficient to stir the crushed granules, cement and admixtures densely and uniformly. Improved liquor is produced, and the strength of the modified liquor is weak due to the occurrence of pores. have.

In addition, since the fastening structure of the high-pressure injection rod is a screw fastening type, the direction of rotation is only one direction when cutting or generating a modified column, so that the connection between the high-pressure injection rods is released when reverse rotation is required.

The object of the present invention is to take into account the above-mentioned problems in the prior art, in order to be able to produce an improved stock having a designed diameter and hardness, first, the cutting hole is made to a certain size, and the cement and the admixture are made dense and uniformly stirred. It is to provide a high-pressure injection injection method and apparatus therefor.

1 is a perspective view of the high-pressure jet rod and airfoil high-pressure jet rod of the present invention

Figure 2 is a cross-sectional view of the high pressure injection rod and airfoil high pressure injection rod of the present invention is connected

Figure 3 is a cross-sectional view showing the joint structure of the high-pressure injection rod or the high-pressure injection rod and airfoil high-pressure injection rod or swivel and high-pressure injection rod of the present invention.

Figure 4 is a cross-sectional view of the high-pressure injection rod is connected to the swivel of the present invention

Figure 5 is a high-pressure injection rod is connected to the swivel of the present invention and the high-pressure injection rod spun high pressure injection rod is a whole state diagram

6 to 9 is a process chart of the high pressure injection method

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

1 high pressure injection rod 2 excavation bit 3 coupling

4: swivel 5: airfoil injection rod 6: air supply pipe

7 admixture supply pipe 8 upper drilling wing 9 injection hole

10: cement supply pipe 11: lower drilling wings 12: coupling groove

13 pinhole 14 pin 15 injection pipe

16: void 17: nozzle 18: O-ring

19: fitting pipe 20: air pipe 21: cement pipe

22: admixture pipe 100: improved column 200: high pressure injection machine

The present invention provides a first step of installing a high-pressure jetting machine 200 equipped with a high-pressure jetting rod 1 at a position where the modified liquor 100 is to be generated, and the rotation of the high-pressure jetting rod 1 and the high-pressure jetting rod 1 The second step of cutting the ground by the excavation bit (2) attached to the tip of the head), and after the completion of the cutting, the ground and cement are broken by spraying cement and admixture from the bottom of the cutting hole, In the high-pressure injection injection method comprising a third step of stirring the admixture or the like to produce the improved liquor 100, the second step is a swivel (4) is fixed to the coupling (3) of the high-pressure injection machine 200 and Airfoil high pressure injection rod (5) is connected to the lower end of the plurality of high-pressure injection rod (1) connected to the swivel (4) by the required depth to perform excavation, and the third step is air while rotating the air-foil high pressure injection rod (5) Admixture with air (6) and admixture with supply tube (7) Air and admixture are injected through the injection holes 9 formed at both ends of the upper drilling blade 8, and air and cement are sent out through the air supply pipe 6 and the cement supply pipe 10 to both ends of the lower drilling blade 11. Injecting cement and air to the injection hole (9) formed in the ground, and the crushed ground toast and cement and admixtures by stirring with the upper drilling wing (8) and the lower drilling wing (11) to produce the improved liquor (100) It is done.

Referring to the structure of the high-pressure jetting rod 1 and the airfoil high-pressure jetting rod 5 used in the method of the present invention as described above with reference to Figures 1 to 5 as follows.

1 is a perspective view of the high-pressure jet rod (1) and airfoil high-pressure jet rod (5) of the present invention, one side end of the high-pressure jet rod (1) formed of a plurality of coupling grooves 12 formed on the polygonal tubular surface of the outer peripheral surface (凸) is formed, the other end is formed with a concave portion through which a plurality of pin holes 13 penetrates into the polygonal tubular body of the inner side, the iron portion of one high-pressure injection rod (1) It is inserted into the yaw portion of the high-pressure jet rod (1) and the pin 14 is inserted through the pin hole 13 is fastened to the coupling groove 12 has a structure in which a plurality of high-pressure jet rod (1) is connected. At one end of the air-foamed high-pressure jet rod (5) is formed a yaw portion, such as the high-pressure jet rod (1), the outer cylinder surface is formed with an injection hole (9) communicating with the inside and the excavation bit (2) The upper drilling rig 8 and the lower drilling rig 11 having a shorter length than the upper drilling rig 8 are vertically spaced apart from each other and are installed to cross at right angles, and an excavation bit 2 is installed at the lower end. .

FIG. 2 is a cross-sectional view of the high-pressure jetting rod 1 and the air-foiled high-pressure jetting rod 5 connected together, and the air supply pipe 6, the cement supply pipe 10, and the admixture supply pipe 7 are formed inside the high-pressure injection rod 1. ) Is installed separately, and the inside of the upper drilling blade (8) and the lower drilling blade (11) is formed with a hole in which the injection pipe 15 is installed, the air gap 16 by the injection pipe 15 and the hole is formed Formed. Both injection pipes 15 of the upper drilling wing (8) are in communication with the admixture supply pipe (7), the injection pipe 15 of the lower drilling wing (11) is in communication with the cement supply pipe (10), the upper drilling wing Both the gaps 16 of the 8 and the lower drilling blades 11 communicate with the air supply pipe 6. At each end of each of the upper drilling wing 8 and the lower drilling wing 11, a nozzle 17 which is extrapolated to the injection pipe 15 and inserted into the air gap 16, together with the injection pipe 15 is provided with the injection hole 9. ).

3 is a joint structure of the convex part and the concave part between the high pressure injection rods 1 or the concave part of the convex part and the airfoil high pressure injection rod 5 of the high pressure injection rod 1; A cross-sectional view showing a joint structure of a joint or a joint structure of a swivel (4) and a high-pressure jet rod (1), wherein the yaw part is connected to an air supply pipe (6), a cement supply pipe (10), and a admixture supply pipe (7). A joint pipe 19 having a plurality of O-rings 18 fitted therein is installed, and an air supply pipe 6 and a cement supply pipe 10 of the iron portion of the high-pressure injection rod 1 to be connected to the joint pipe 19 are provided. ) And the end of the admixture supply pipe 7 are extrapolated and joined.

4 is a cross-sectional view of a structure in which the high-pressure jet rod 1 is connected to the swivel 4, in which the swivel 4 is fixed to the coupling 3, and an air conduit 20 and a cement conduit 21 therein. Admixture conduit 22 is formed, and the lower end is formed with iron parts in which a plurality of coupling grooves 12 are formed on a polygonal columnar surface. The iron portion of the swivel 4 is inserted into the yaw portion of the high-pressure injection rod 1 so that the pin 14 is inserted into the pinhole 13 of the high-pressure injection rod 1 and the swivel 4 It is shown that is coupled to the coupling groove 12 of the.

FIG. 5 is an overall state diagram in which the high-pressure jet rod 1 is connected to the swivel 4 and the blade-type high-pressure jet rod 5 is connected to the high-pressure jet rod 1.

According to the present invention, the joint of the high-pressure jetting rod 1 is firm and reverse rotation is possible by individually installing the air supply pipe 6, the cement supply pipe 10, and the admixture supply pipe 7 and the pin 14 fastening structure. It is easy to cut the hole, and the admixture is injected into the injection hole 9 of the upper drilling wing 8, and the cement can be injected into the injection hole 9 of the lower drilling wing 11, thereby making it possible to produce a quality refined liquor.

In the second step following the first step, the present invention is provided with a lower drilling blade (11) to which the drilling bit (2) is attached, longer in length than the lower drilling blade (11), and installed above the lower drilling blade (11). Excavation is carried out with a blade-type high-pressure jet rod 5 composed of an upper drilling blade 8 to which an excavation bit 2 is attached.

The feature of the present invention in the second step is characterized by the upper drilling blade 8 and the lower drilling blade 11 installed on the airfoil high pressure injection rod 5, in particular the lower drilling blade 11 of short length is first small. There is an advantage that the cutting force load is small by cutting the diameter and then cutting the upper drilling blade 8 in a wide range.

And, depending on the depth of the cutting hole is a high-pressure injection rod (1) is connected to a plurality of cutting holes, the present invention is characterized in that the connection to the pin (14). That is, in the related art, it was not possible to do this when the reverse rotation is required when cutting or creating a modified column by rotating in one direction by the screwing method. However, in the present invention, the iron portion of the high-pressure injection rod 1 is inserted into the yaw portion of the other high-pressure injection rod 1, and the pin 14 is inserted into the pinhole 13 of the yaw portion. It is fastened to the coupling groove 12 of the iron portion and penetrated again by penetrating the pinhole 13 of the opposite yaw portion. At this time, since the iron portion and the yaw portion of the high-pressure injection rod 1 of the present invention form a polygonal tube body, the resistance to rotation becomes large. Therefore, the thread is worn by the one-way rotational force by the conventional screw fastening method to overcome the disadvantage that the fastening and disassembly is difficult, and both the forward and reverse rotation is possible.

In addition, the joint system according to the pin 14 of the present invention is the air supply pipe 6 and the cement supply pipe 10 and the admixture supply pipe 7 installed in the high-pressure injection rod 1 and the airfoil high-pressure injection rod 5, respectively. It is a structure necessary for the joint by the installation, and the three supply pipes (6) (7) 10 is a structure that can be accurately connected.

That is, in the conventional joint structure of the screw coupling method, three separate supply pipes 6, 7 and 10 cannot be installed, so that they are formed as a multilayered pipe. Conventional coupling structure by a multi-layered pipe is connected to the pipe by the screw coupling method, so when forming a screw thread on the pipe itself, there is a disadvantage that the coupling part is weak in the step of drilling to withstand a strong resistance, and reinforce it In the case of the joint pipe in order to produce a pipe resistance in the joint, the cement or admixture sprayed at high pressure is not able to be injected at high speed and high pressure has a disadvantage that can not produce the improved diameter of the designed diameter.

However, the present invention solves this, as described above, the three supply pipes (6) (7) (10) is not a screw coupling structure is connected to the insertion pipe (19), which is 3 and 4 As shown in the end portion of the supply pipes 6, 7 and 10 of the iron part is extrapolated to the insert-type joint pipe 19 provided with a plurality of O-rings 18 to increase the sealing and coupling force, without changing the volume of the pipeline. As a result, the pipe resistance is reduced compared to the conventional method.

In the third process, the air and the admixture are injected through the injection holes 9 formed at both ends of the upper drilling blade 8 while rotating the air-foil high pressure injection rod 5, and the injection holes 9 formed at both ends of the lower drilling blade 11 are provided. The cement and air are sprayed to crush the ground and stir the granules, the cement and the admixture crushed by the upper rigged wing 8 and the lower rigged wing 11 to produce the modified liquor 100. The present invention is characterized in that the admixture is injected into the upper drilling wing (8), and the cement is sprayed into the lower drilling wing (11). Therefore, the cement sprayed from the lower portion is naturally agitated with the admixture sprayed from the upper portion as it is ejected to the upper portion, and the upper drilling wing 8 serves to help the mixing and stirring of the cement and the admixture. Conventional agitation was dependent only on the ejection pressure, so the dense and homogeneous agitation could not be produced, and thus, the improved liquor 100 only for the granules or the improved liquor 100 only for the cement were produced, resulting in a decrease in strength. By eliminating it, it is possible to produce the improved liquor 100 with the strength designed by dense and homogeneous stirring.

As described above, the present invention is easy to cut into a wide diameter, homogeneous and dense agitation of the cement and admixture, thereby producing an improved liquor 100 having a designed diameter and strength, thereby improving the construction quality. have.

Claims (6)

In the first step of installing the high-pressure injection machine 200, and the rotation of the plurality of high-pressure injection rods 1 screwed to the required depth and the drilling bit (2) attached to the tip of the high-pressure injection rod (1) The second step of cutting the ground by means of the ground, and after the completion of the cutting, spraying the cement and admixtures from the lowest of the cutting hole, crushing the ground and stirring the crushed granules, cement and admixture, etc. to generate the refined liquor 100. In the high-pressure injection injection method consisting of a third step to make, the second step is a plurality of swivel (4) is fixed to the coupling (3) of the high-pressure injection machine 200 and the swivel (4) a plurality of joints to the required depth The airfoil high pressure injection rod 5 is connected to the lower end of the high pressure injection rod 1 to carry out excavation, and the third step is performed by spraying the injection holes 9 formed at both ends of the upper excavation blade 8 while rotating the airfoil high pressure injection rod 5. Spray air and admixture with), Cement and air are injected through the injection holes 9 formed at both ends of the auxiliary drilling blades 11, and the crushed ground granules, cement and admixtures are stirred by the upper drilling blades 8 and the lower drilling blades 11, and improved. High pressure injection method, characterized in that to generate (100). Both ends are formed with a concave portion and an iron portion of a polyhedron, and an air supply pipe 6, a cement supply pipe 10, and a admixture supply pipe 7 are installed therein, and an inner bottom portion of the concave portion is provided. A joint pipe 19 in which a plurality of O-rings 18 are fitted is installed, a pinhole 13 is formed through the recess portion, and a plurality of coupling grooves 12 are formed on the surface of the iron portion. High pressure injection rod for high pressure injection injection method characterized in that. The air pipe 20, the cement pipe 21 and the admixture pipe 22 is formed therein, and the iron portion is formed on the bottom of the plurality of coupling grooves 12 formed on the polygonal column-shaped surface Swivel for high pressure injection method. The concave portion of the polyhedron is formed at the upper end, and the upper excavation wing 8 and the lower excavation wing 11 having a shorter length than the upper excavation wing 8 are spaced vertically and intersect at right angles on the outer cylindrical surface. Air pressure injection rod for high pressure injection injection method, characterized in that the lower end is installed, the excavation bit (2) is installed and configured. The upper drilling wing (8) and the lower drilling wing (11) are formed with holes through which the injection pipes (15) are inserted, and the air gaps (16) formed by the injection pipes (15) and the holes are formed therein. ) Is formed, and the injection pipe 15 provided on both sides of the upper drilling blade (8) is in communication with the admixture supply pipe (7), the injection pipe 15 provided on both sides of the lower drilling blade (11) is a cement supply pipe (10) ) And the air gap 16 formed in the upper drilling blade 8 and the lower drilling blade 11 are in communication with the air supply pipe 6, and the upper drilling blade 8 and the lower drilling blade 11 are in communication with each other. For injection of the high-pressure injection injection method, characterized in that the nozzle 17 extrapolated to the injection pipe 15 and interpolated in the cavity 16 at each of both ends of the injection hole 15 is formed together with the injection pipe 15. Airfoil high pressure injection rod. The end portions of the air supply pipe 6, the cement supply pipe 10, and the admixture supply pipe 7 of the iron portion are extrapolated to the joint pipe 19 in the recessed portion, and the pinhole 13 and the coupling groove ( 12) the pin 14 is inserted into the joint between the high-pressure jet rod (1) or the joint of the high-pressure jet rod (1) and the air-foam high-pressure jet rod (5) or the high-pressure jet rod (1) and the swivel (4) High pressure injection rod for high pressure injection injection method characterized in that.