JP2003301452A - High-pressure jet mixing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To greatly reduce the volume of discharged mud so as to enhance an effect such as an economical effect, for example, by improving a nozzle, which is formed in a multi pile, etc., so as to swing the nozzle (up to an angle of 180°). <P>SOLUTION: A high-pressure jet mixing method for fixing ground in a prescribed range by emitting a jet of a curing material has, for example, a process in which swinging is brought bout at an arbitrary angle while a prescribed amount of the curing material is jetted from a main nozzle and a sub-nozzle, which are formed in a water pipe for high pressure of the multi pipe inserted into a boring hole, and a process in which air is sent out from an air nozzle which is formed in the multi pipe, concurrently with the jet of the curing material. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main nozzle and a sub-nozzle formed in a high-pressure water pipe such as a multiple pipe by swinging the multiple pipe at an arbitrary angle (the swinging angle is 180 degrees or less). As described above, the present invention relates to an improvement of the high-pressure injection stirring method, such as reducing the volume of sludge and significantly improving the economy as compared with the conventional high-pressure injection stirring method.

[0002]

2. Description of the Related Art As a conventional ground improvement method, it has been proposed that the shape of injection stirring be rectangular. With this conventional method, it is possible to create a body that fits the purpose without waste, according to the shape of the plan, so that the underground soil from the ground can be effectively used by solidifying only the required size. As remote processing technology, it is applied to soil retention / water retention, ground liquefaction countermeasures, soft ground improvement, etc.

[0003]

DISCLOSURE OF THE INVENTION The present invention is a new construction method which is an improvement of the above-mentioned conventional high-pressure jet agitation construction method which has been proposed as a ground improvement construction method. The new construction method of the present invention significantly reduces the volume of sludge by improving the shaking of the nozzles formed in the multiple pipes (swing up to 180 degrees in the present invention) and the like, which is economically effective. The purpose is to improve

[0004]

Means for Solving the Problems The present invention is, as a means for solving the above-mentioned problems, a high-pressure injection stirring method for injecting a hardening material to fix a ground in a predetermined range. A step of oscillating at a desired angle while injecting a predetermined amount of curing material from a main nozzle and a sub-nozzle formed in a water pipe, and sending air simultaneously with the injection of the curing material from an air nozzle formed in the multiple pipe. And the step of pulling up the multiple pipes, etc., and by taking out the sludge generated by the swing of the main nozzle and the sub-nozzle, etc., it is necessary to cut from the ground to underground soil As soil underground processing technology that solidifies and effectively uses only specific dimensions,
It can be applied to ground liquefaction measures and soft ground improvement.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is a new method in which the above-mentioned conventionally proposed high-pressure jet agitation method for ground improvement is improved. The main part of this improved new construction method is to inject a predetermined amount of hardener from the main nozzle and sub-nozzle formed in the high pressure water pipe of the multiple pipe inserted in the boring hole while injecting it with the injection pressure and injection amount suitable for the soil quality. The method includes a step of rocking at a predetermined angle, a step of sending out air simultaneously with the injection of the hardening material from an air nozzle formed in the multiple pipe.

The present invention will be described with reference to the accompanying drawings. 1 is a schematic configuration diagram of a main part, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG.
1 is a sectional view taken along the line BB of FIG. 1, in which a drilling water pipe 12 is formed in the center of the multiple pipe 11, and a high pressure water pipe is formed in the vicinity of the multiple pipe 11 and the drilling water pipe 12. 13, 13, 14 and air holes 15 are formed. The high pressure water pipes 13, 1
3, main nozzles 13A and 13A are formed, and the high-pressure water pipe 14 is formed with a sub nozzle 14A and an air nozzle 14B. FIG. 4 shows that the main bodies 100, 200 are formed by the swinging movement of the main nozzles 13A, 13A and the sub-nozzles 14A formed on the high pressure water pipe (not shown) formed on the multiple pipe 11 and the drilling water pipe 12. It is an explanatory view showing that. FIG. 5 is an explanatory view schematically showing the construction bodies 100 and 200 shown in FIG. 4 in a plan view.

In the conventional high-pressure jet agitation method, a multi-tube or the like is configured to rotate at 360 degrees by an operation management operation (not shown). On the other hand, in the high-pressure jet agitation method according to the present invention having the above-described configuration, the multiple pipe 11 fixed to the monitor (not shown) is preset by an operation management operation (not shown). It is configured to move in a predetermined range (0 to 180 degrees). From the main nozzles 13A, 13A formed in the high-pressure water pipes 13, 13 to 20 to 60 MPa · 50 to 200
A setting material of liter / minute is set so as to be jetted together with the air from the air nozzle 14B. Further, from the sub nozzle 14A formed in the high pressure water pipe 14,
It is set to inject 20 to 60 Mpa · 30 to 100 liters / minute.

By the way, in the present invention, since the high-pressure water pipes 13, 13, 14 are preset to oscillate by 30 degrees, the main nozzles formed in the high-pressure water pipes 13, 13, 14 are arranged. 13A, 13A and sub nozzle 14
A also moves only 30 degrees. As described above, in the present invention, the main nozzles 13A and 13A are swung by 30 degrees, whereas the conventional main nozzle is configured to rotate by 360 degrees. Inventive main nozzle 13A swings 30 degrees) / 360
(360 degrees in which the conventional main nozzle rotates) × 2 (the number of the main nozzles of the present invention is 2) = 1/6 (compared with the conventional method). Further, the sub-nozzle 14A formed in the high-pressure water pipe 14 is set so as to cut the earth and sand at an intermediate point between the main nozzles 13A and 13A as shown in FIG. Since the sub-nozzle 14A is set to swing by 30 degrees, the conventional main nozzle has three
Compared with the case where it is configured to rotate by 60 degrees, the volume of cutting soil is 30 (the swing of the sub-nozzle 14A of the present invention is 30 degrees) / 360 (rotating 360 degrees of the conventional main nozzle) × 1 (The number of sub-nozzles of the present invention is 1) =
1/12 (compared with conventional). Thus, comparing the capacity of the cutting soil with the conventional method, 30 (the swing of the main nozzle 13A of the present invention is 30 degrees) / 360 (360 degrees in which the conventional main nozzle rotates) × 2 (the number of the main nozzles of the present invention 2) = 1/6 (compared with conventional method), 30
(Sub-nozzle 14A of the present invention swings 30 degrees) / 360
(The conventional main nozzle rotates 360 degrees) × 1 (the number of the sub-nozzles of the present invention is 1) = 1/12 (compared with the conventional). Therefore, the volume of cutting soil is 1/6 of the main nozzles 13A and 13A (compared with the conventional one),
Since it is a total of 1/12 of the sub nozzle 14A (compared with the conventional one), it becomes 1/4.

As described above, in the present invention, since the high pressure water pipes 13, 13, 14 are preset to swing by 30 degrees, they are formed in the high pressure water pipes 13, 13, 14. The main nozzles 13A, 13A and the sub-nozzle 14A that are moving also swing by 30 degrees. As described above, in the present invention, the main nozzles 13A, 13A are swung by 30 degrees, whereas the main nozzle of the conventional method is configured to rotate by 360 degrees. 30 (the swing of the main nozzle 13A of the present invention is 30 degrees) / 360 (the conventional main nozzle rotates 3)
60 degrees) × 2 (the number of main nozzles of the present invention is 2) =
It becomes 1/6 (compared with the conventional method). In addition, the sub nozzle 1
Since 4A is set so as to swing by 30 degrees, the volume of cutting earth is 30% compared to the conventional construction in which the main nozzle is configured to rotate 360 degrees.
(Sub-nozzle 14A of the present invention swings 30 degrees) / 360
(360 degrees in which the conventional main nozzle rotates) × 1 (the number of the sub-nozzles of the present invention is 1) = 1/12 (compared with the conventional). In this way, in order to compare the volume of the cutting soil with the conventional method as a whole, 30 (the main nozzle 13 of the present invention is used.
A movement of A) / 360 (degree of rotation of the conventional main nozzle) × 2 (number of main nozzles of the present invention) = 1/6
(Compared with conventional), 30 (sub-nozzle 14A swing of the present invention) / 360 (rotation degree of conventional main nozzle) × 1 (number of sub-nozzles of the present invention) = 1/12 (compared with conventional)
And is the sum of. Therefore, the volume of the cutting soil is 1/4 because it is the sum of 1/6 of the main nozzles 13A and 13A (compared with the conventional) and 1/12 of the sub nozzle 14A (compared with the conventional).

As described above, the high pressure water pipes 13, 13, 1
Since 4 is set in advance to swing 30 degrees,
The main nozzles 13A, 13A and the sub-nozzles 14A formed on the high-pressure water pipes 13, 13, 14 also move by 30 degrees. Therefore, the formed body 10 shown in FIG. 4 and FIG.
Since 0 and 200 are formed, the volume of the cutting soil is about 1/4 of that of the conventional method in which the main nozzle and the sub nozzle rotate (rotate 360 degrees). The formed bodies 100, 200 formed in this manner have a part (lower part) close to a rectangle as shown in FIG.

As shown in FIG. 5 described above, by swinging the main nozzles 13A, 13A and the sub-nozzle 14A by only 30 degrees, a part (lower part) of the structure 10 having a nearly rectangular shape is formed.
Since 0 and 200 are formed, the multiple pipe 11 is pulled up to move the entire apparatus (not shown), and again the formations 100 and 200 having the shape shown in FIG. 5 are continuously formed.
In this way, move the entire device (not shown),
By continuously forming the formed bodies 100 and 200 having the shape shown in FIG. 5, a formed body having a desired arbitrary shape can be formed.

The present invention is not limited to the above-mentioned embodiment, but there are various application examples and modified examples. For example, it corresponds to soil and the like. The swinging motion of the main nozzles 13A, 13A and the sub nozzle 14A formed in the high-pressure water pipes 13, 13 can be set to 30 degrees or less or 30 degrees to 180 degrees. Further, in the above embodiment, the main nozzle 13
Although the hardener is set to be injected from 20 to 60 Mpa · 50 to 200 liters / min from A and 13A, it is not limited to these numerical values of 20 to 60 Mpa · 50 to 200 liters / min. Instead, it can be arbitrarily set to a numerical value within the performance range of the entire device (not shown) according to the soil quality and the like.

As described above, the present invention provides the multi-tube 11
Is configured to move in a preset predetermined range (0 to 180 degrees) by an operation management operation (not shown). Then, from the main nozzles 13A, 13A formed in the high-pressure water pipes 13, 13, 20 to 60 Mp
a. Curing material of 50 to 200 liters / minute is set to be jetted. Further, from the sub-nozzle 14A formed in the high pressure water pipe 14, 20 to 60 MPa.
It is set to inject 30 to 100 liters / minute. In this way, the main nozzles 13A, 13A-2
Curing material of 0 to 60 MPa, 50 to 200 liters / minute is supplied from the sub nozzle 14A to 20 to 60 MPa, 30 to 1
Since the main nozzles 13A, 13A and the sub-nozzle 14A are also set to oscillate by 30 degrees in the state of being set to jet 00 liters / minute, the main nozzle of the conventional method is set to rotate by 360 degrees. In comparison with the above, as described above, the volume of cutting earth becomes about 1/4.

[0013]

As described above, the main nozzles 13A and 13A are
By setting A and the sub-nozzle 14A so as to oscillate by an arbitrary angle while injecting a predetermined amount of curing material,
Since the volume of cutting earth and sand can be reduced to about 1/4 of that of the conventional method, the amount of cutting earth and sand that becomes industrial waste and the like can be greatly reduced, and the economic effect is remarkable.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a main part in a high-pressure jet agitation method according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is a main nozzle 13A, 13A and a sub nozzle 1.
It is explanatory drawing which shows that the creation bodies 100 and 200 are created by the oscillating motion of 4A.

FIG. 5 is an explanatory view schematically showing the structural bodies 100 and 200 shown in FIG. 4 in a plan view.

[Explanation of symbols]

11 ... Multi-tube 12 ... Pipe for drilling water 13 ... High-pressure water pipe 13A ... Main nozzle 14 ... High-pressure water pipe 14A ... Sub nozzle 14B: Air nozzle 15 ... Air hole 100 ... Creation 200 ... Creation

Continued front page    (72) Inventor Makabe Kazumi             5-1-1 Takamihara, Kukizaki-cho, Inashiki Group, Ibaraki Prefecture (72) Inventor Motoyasu Goto             1-31-11-801 Nakakasai, Edogawa-ku, Tokyo             issue F-term (reference) 2D040 AB03 BA01 BA02 DA02 DA13                       FA02

Claims (4)

[Claims] 1. In a high-pressure jet stirring method for injecting a hardening material to fix a ground in a predetermined range, a predetermined amount of the hardening material is fed from a main nozzle and a sub-nozzle formed in a high-pressure water pipe of multiple pipes inserted in a boring hole. A high-pressure jet agitation method, which comprises a step of rocking at an arbitrary angle while jetting, and a step of sending out air simultaneously with jetting of the hardening material from an air nozzle formed in the multiple pipe. 2. The high-pressure jet agitation method according to claim 1, wherein the main nozzle is plural. 3. The high-pressure jet stirring method according to claim 1, wherein the number of main nozzles is at least one. 4. The high-pressure jet agitation method according to claim 1, wherein the number of sub-nozzles is at least one.