KR20060092959A - Consolidated body construction method and device therefor - Google Patents

Abstract

In the underground, by spraying the curing agent in various and multi-directions, it is possible to create a new solidified body having one solidified body but having different cross-sectional shapes depending on the depth and freely having a cross-sectional or longitudinal cross-sectional shape. It provides a method for forming a solid aggregate.

In the method of forming a solid body which extracts the rod inserted into the ground or inserts the rod into the ground, jetting jet of hardener liquid from the nozzle of the tip portion at a predetermined position and kneading with the ground to form a solid body having a predetermined shape. In order to maintain a predetermined reach of jet jetting of the curing agent liquid, the diameters of the plurality of nozzles provided at predetermined positions of the tip of the rod are selected in the range of 1.5 mm to 7.0 mm, and the curing agent liquid from each nozzle The spraying pressure is selected from the range of 10 MPa to 70 MPa, and the swing speed is about 25 cm / second or less at the circumferential speed of the jetting point of the curing agent liquid to form a solid body having a predetermined shape. It was set as a binder composition method.

Freezing, Rod, Tip, Nozzle, Liquid Hardener, Rotational Swing, Jet Jet, Circumferential Speed

Description

Method and apparatus for solidified composition {CONSOLIDATED BODY CONSTRUCTION METHOD AND DEVICE THEREFOR}

1 is a plan view of a jet jet of an embodiment of the invention.

2 is a plan view of an embodiment of the present invention.

3 is a plan view of an embodiment of the present invention.

4 is a perspective view of an apparatus of an embodiment of the present invention.

5 is a perspective view of the apparatus of the embodiment of the present invention.

(Explanation of drawing)

1 rod 2 nozzles

3 jet classification 4 existing ground obstacle

5 Consolidation 6 Pathway

7 Suction mouth 8 Internal pressure sensor

9 Exclusive passage for jet sorting 10 Tip

11 communication line storing passage

The present invention is a hardener used for the purpose of the stability of the ground, Jisan support, tunnel support, the foundation of the construction, the foundation reinforcement of the construction, prevention of liquefaction, ground wall for preventing water, groundwater water prevention, etc. The present invention relates to a solidified body composition method and apparatus for spraying and kneading with ground to form a solidified body in the ground.

The conventional technique of forming a solidified body in the ground by injecting a curing agent into the ground is to rotate the rod while injecting the curing agent from one or several nozzles installed at the tip of the rod of a single or multi-pipe, The cross-sectional shape is usually circular, and rarely a semicircular or fan-shaped solidified body has been formed. In addition, as a method of spraying a hardening | curing agent, the method is determined for every construction method about the nozzle diameter and pressure which are used for the spraying of a hardening | curing agent, and each type is determined and used one direction. However, in the present urban underground construction, there are many existing plumbing and constructs, and although the formation of a complicated solidified body is required, in a circular cross section, a solidified body is formed even in an unnecessarily part in a circular cross section. In many cases, it is uneconomical and environmentally undesirable. Moreover, in the solidified body composition in a private land boundary etc., the solidified body of a circular cross section penetrates beyond a boundary line, and there exists a case where it becomes a problem.

(Patent Document 1) Japanese Unexamined Patent Publication No. 6-80247

Currently, the technique of spraying a hardener in the ground and kneading with the ground to form a solidified body in the ground is to rotate the rod while spraying the hardener from one or several nozzles installed at the tip of the rod of a single or multi-pipe. From the theory, the cross-sectional shape is usually circular, rarely semicircular or fan-shaped solidified body is formed. The technique of forming a solidified body in the ground by spraying a hardener on the ground has a history of more than 30 years in Japan, and it is possible to improve the periphery of a predetermined place around the ground simply by inserting a pipe from the ground without attaching the ground. It is a technology that has been widely used as a technology that can be used. However, in the circular cross section, a solidified body is often formed even in an unnecessarily part on the arrangement, which is uneconomical and unfavorable in terms of environment. Moreover, in the solidified body composition in a private land boundary, etc., the solidified body of a circular cross section has become a problem beyond a boundary line. Therefore, the present applicant has developed a composition method of a rectangular shape improved body in Japanese Patent No. 1946033, moves two or more opposing nozzles without rotating them, and moves high-pressure jet jets in a plurality of directions to spray a high-pressure jet jet in multiple directions. We have developed a technology for forming a lump, but we cannot create a solid lump of a shape such as a polygon or a deformed ellipse such as a triangle or a star other than a rectangle, and move a nozzle in a ground having existing pipes, structures, and aldols in the ground. There was a problem that the non-improved portion occurred because of the inability to carry out the process. Moreover, as the injection means of a hardening | curing agent, as for the conventional method of the circular cross section, also the Japanese Patent No. 1946033 of this applicant, the method is determined for every method by nozzle diameter and pressure which are used for the injection of hardening | curing agent, respectively, and it determines and uses one type and one direction, respectively. In order to make the composition of a solidified body into a predetermined shape, there has been no method of spraying the curing agent in one direction in various ways and in various directions. In order to efficiently carry out underground development in urban areas, which will become increasingly complicated in the future, by spraying hardening materials in various and various directions in the ground, the cross-sectional shape or cross-sectional shape is different depending on the depth of one solidified body. There is a demand for a new method of forming a solid body that can also form a solid body having a free shape.

SUMMARY OF THE INVENTION The present invention provides a new method of forming a high solid body in consideration of the above circumstances, wherein the jet jet of the hardener solution is jetted from the nozzle at the tip at a predetermined position while extracting the rod inserted into the ground or inserting the rod into the ground. In the solidified body composition method of kneading and forming a solidified body of a predetermined shape, in order to maintain the predetermined reach | attainment distance of jet jet of hardening | curing agent liquid, the diameter of each nozzle provided in predetermined location of the front-end | tip of a rod is 1.5 mm. It is selected in the range of 7.0 mm, and the injection pressure of the curing agent liquid from each nozzle is selected in the range of 10 MPa to 70 MPa, and for the swinging turn, the circumferential speed at the arrival point of jet jetting of the curing agent liquid is 25 cm / sec or less. It is a solid-body composition method characterized by forming a solid-form body of a predetermined shape by this.

In addition, the present invention is to extract the rod inserted into the ground or to insert the rod in the ground to jet jet jet of the curing agent liquid from the nozzle of the tip at a predetermined position to knead with the ground to form a solid body of a predetermined shape In the method for forming a solidified body, a plurality of rods are disposed at positions where jet jets of the curing agent liquid reach and meet each other, and in order to maintain a predetermined reach of jet jets of the curing agent liquid, the rods are provided at predetermined positions of the rod ends. The diameters of the plurality of nozzles are selected in the range of 1.5 mm to 7.0 mm, and the injection pressure of the curing agent liquid from each nozzle is selected in the range of 10 MPa to 70 MPa, and for the swing rotation, the jet jet of the curing agent liquid is reached. By setting the circumferential speed of the point to 25 cm / sec or less, the solidified body composition method of forming a solidified body of a predetermined shape is characterized.

Furthermore, the present invention provides means for injecting a curing agent at a predetermined pressure in a predetermined direction from a predetermined nozzle of a rod having a plurality of holes in the ground, and means for turning the rod at a predetermined rocking angle and a rocking speed. And a means for inserting and extracting a rod into the ground at a predetermined speed, and further comprising a means according to claim 1 or 2.

(Example)

The present invention relates to a method of forming a solid body in which a solid body is formed in a predetermined shape, wherein a predetermined diameter is formed from a plurality of nozzles each having a predetermined diameter and a shape, each of which is provided at a predetermined position at a distal end of a rod having a plurality of holes. The tip of the rod having a plurality of holes provided at a position where the spray of the curing agent reaches and meets by turning the rod at a predetermined rocking angle and a rocking speed by spraying a predetermined hardener at a predetermined pressure in the direction. From each of the plurality of nozzles each having a predetermined diameter and shape provided at a predetermined location, a predetermined curing agent is sprayed at a predetermined pressure in a predetermined direction to rotate the rod at a predetermined swing angle and a predetermined swing speed, respectively. In the composition cross section, a solidified body having a predetermined shape is formed. That is, in the practice of the present invention, it is necessary to simultaneously spray the curing agent in various and various directions to suit the shape of the required solidified body, and the nozzle position, the direction and the injection of the tip of the rod having a plurality of holes The pressure and the diameter and shape of the nozzle are set in accordance with the shape of the required solidified body, and by operation from the ground, the rod is rotated at a predetermined depth at a predetermined swing angle and a predetermined swing speed by a predetermined operation. By repeating the same while pulling out or inserting the length rod, a solid body having a predetermined shape having a predetermined length can be formed. EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail based on the specific Example shown in attached drawing.

(Example 1)

In order to explain the construction mode in which the circumferential speed of the arrival point of jet jet is 25 cm / sec or less in order not to impede the straightness of the injection, the principle of the invention will be described with reference to FIG.

In the general ground, when the jet length of the jet stream 3 from the nozzle 2 of the rod 1 is 2.0 m, the experiment result shows that the injection time required for a distance of 2.0 m from the nozzle 2 is about 0.4 seconds, The cutting width by the injection from the nozzle 2 to the injection point of 2.0 m became 20 cm.

In this case, when the injection point is moved by 50 cm in the horizontal direction for 1 second, it can be formed by overlapping about 25 cm from the injection point. Therefore, in order not to impair the straightness of the injection, the circumferential speed at the arrival point of jet jet can be 25 cm / sec or less.

(Example 2)

2 shows an embodiment of the present invention under the ground. Five nozzles 2 of the rod 1 having a large number of holes are used, and the turning angle of the rod 1 is 25 degrees to 30 degrees. The jetting distance 3 of the curing agent liquid injected from the nozzle 2 is adjusted to reach the nozzle diameter or the injection pressure so as not to injure the existing ground obstacles 4.

(Example 3)

In describing the construction mode of the solidified body 5 having a triangular cross-sectional shape, the principle of the invention will be described with reference to FIG. 3.

The shape of the solidified body 5 to be formed is divided into 12 places in the region ① as shown in Fig. 3, and the spraying reach required for each region is adjusted to the diameter, pressure and circumferential speed of the nozzle according to the shape of the solidified body. Set it.

At the time of setting, in order to take into account economics, the spraying reach can be determined by setting the ratio of the composition volume and the spraying amount of each region to about 50% or less.

The composition method reciprocates once by swinging the rod 1 at an angle of 30 degrees, lifts it by a predetermined height, and repeats swinging and lifting in the same manner.

Table 1 shows the required spraying reach, nozzle diameter, pressure and circumferential velocity of each zone.

Area number Spray length (cm) Nozzle diameter (mm) Injection pressure (Mpa) Circumferential speed (cm / sec) ① 180 3.4 40.0 24.0 ② 105 2.0 40.0 14.0 ③ 80 2.4 30.0 11.0 ④ 110 2.1 40.0 14.0 ⑤ 150 3.0 40.0 20.0 ⑥ 90 1.8 40.0 12.0 ⑦ 70 2.2 30.0 9.0 ⑧ 80 2.4 30.0 11.0 ⑨ 120 2.4 40.0 16.0 ⑩ 85 2.5 30.0 11.0 ⑪ 80 2.4 30.0 11.0 ⑫ 100 2.0 40.0 13.0

Generally, the ground which needs ground improvement is a case of alluvial laminated ground, and uniformity is spread over a wide range of planes in an alluvial laminated ground. For this reason, it is generally considered to be uniform soil, and it is common to construct the difference of soils generated for each depth by improved numerical values corresponding to the minimum conditions.

Example 4

The apparatus used in the present invention is shown in FIG.

The cross-sectional shape of the rod 1 is circular or square with a large number of holes, and the number of holes can be increased or decreased depending on the number of uses of the nozzle 2, the use environment of the communication line storage, or the presence of a vane passage. have. The jet flow dividing path 9 is configured to individually set the pressure of the jet flow 3 from the nozzle 2 through the respective nozzles 2 of the tip device 10, so that the diameter of the nozzle 2 can be set. By individually adjusting the flow rates of the jet stream 3 can be set individually. The tip device 10 can be set to any number of nozzles 2 for injecting a curing agent, and the position of each nozzle 2 can be provided almost horizontally. According to the other use environment, by adding the internal pressure sensor 8 which is a pressure measuring mechanism and the suction mouth 7 which is a slurry suction discharge mechanism, it does not affect to the surrounding ground, Not only can the solidified body 5 be formed, but the present invention is not limited only to the vertical direction, but can also be used in the inclined direction and the horizontal direction.

Example 5

The apparatus which installs and forms a some rod in the position where the jet jet of the hardening | curing agent liquid of this invention reaches and meets is shown in FIG. The composition may be performed simultaneously, or may be performed at a time difference, and as shown in FIG. 5, a plurality of devices of the same type may be used simultaneously, or a single device may be used at each position in sequence.

(Industrial availability)

Generally, the ground which needs ground improvement is a case of alluvial laminated ground, and uniformity is spread over a wide range of planes in an alluvial laminated ground. For this reason, it is generally considered to be uniform soil, and it is common to construct the difference of soils generated for each depth by improved numerical values corresponding to the minimum conditions. The present invention can adjust the pressure for each soil, it is possible to realize the ground improvement at a lower cost.

According to the present invention, a jet jet of a hardener solution is sprayed from a nozzle at a tip portion at a predetermined position while extracting a rod inserted into the ground or inserting a rod into the ground to knead with the ground to form a solid body having a predetermined shape. In the binding composition method, in order to maintain a predetermined reach of jet jetting of the curing agent liquid, the diameters of the plurality of nozzles provided at predetermined positions of the tip of the rod are selected in the range of 1.5 mm to 7.0 mm, and each nozzle In order to form a solidified body of a predetermined shape by selecting the injection pressure of the curing agent liquid from the range of 10 MPa to 70 MPa and the circumferential speed of the jetting point of the curing agent liquid to 25 cm / sec or less for the swinging turn It was set as the solidified body composition method characterized by the above-mentioned.

In addition, the present invention is to extract the rod inserted into the ground or to insert the rod in the ground to jet jet jet of the curing agent liquid from the nozzle of the tip at a predetermined position to knead with the ground to form a solid body of a predetermined shape In the method for forming a solidified body, a plurality of rods are disposed at positions where jet jets of the curing agent liquid reach and meet each other, and in order to maintain a predetermined reach of jet jets of the curing agent liquid, the rods are provided at predetermined positions of the rod ends. The diameters of the plurality of nozzles are selected in the range of 1.5 mm to 7.0 mm, and the injection pressure of the curing agent liquid from each nozzle is selected in the range of 10 MPa to 70 MPa, and for the swing rotation, the jet jet of the curing agent liquid is reached. By setting the circumferential speed of the point to 25 cm / sec or less, a solidified body composition method was characterized by forming a solidified body having a predetermined shape. .

Furthermore, the present invention provides means for injecting a curing agent at a predetermined pressure in a predetermined direction from a predetermined nozzle of a rod having a plurality of holes in the ground to provide a corresponding solidified body composition device, a predetermined swing angle and It was set as the high-solid-state composition apparatus which has a means which turns a rod at a predetermined | prescribed rocking | fluctuation speed, and a means for inserting and extracting a rod into a ground at a predetermined | prescribed speed, and also provided the means according to Claim 1 or Claim 2.

Claims (3)

In the method of forming a solid body which extracts the rod inserted into the ground or inserts the rod into the ground, jetting jet of hardener liquid from the nozzle of the tip portion at a predetermined position and kneading with the ground to form a solid body having a predetermined shape. In order to maintain a predetermined reach of jet jetting of the curing agent liquid, the diameters of the plurality of nozzles provided at predetermined positions of the tip of the rod are selected in the range of 1.5 mm to 7.0 mm, and the curing agent liquid from each nozzle The spraying pressure is selected from the range of 10 MPa to 70 MPa, and the swing speed is about 25 cm / second or less at the circumferential speed of the jetting point of the curing agent liquid to form a solid body having a predetermined shape. Binding composition method. In the method of forming a solid body which extracts the rod inserted into the ground or inserts the rod into the ground, jetting jet of hardener liquid from the nozzle of the tip portion at a predetermined position and kneading with the ground to form a solid body having a predetermined shape. In order to arrange a plurality of rods at positions where jet jets of the curing agent liquid reach and meet each other, and to maintain a predetermined reach of jet jets of the curing agent liquid, The diameter is selected in the range of 1.5 mm to 7.0 mm, and the injection pressure of the curing agent liquid from each nozzle is selected in the range of 10 MPa to 70 MPa, and for the swing rotation, the circumferential speed at the point of arrival of the jet jet of the curing agent liquid is selected. By setting it as 25 cm / sec or less, the solidified body of the predetermined shape is formed, The solidified body composition method characterized by the above-mentioned. Means for injecting a predetermined curing agent at a predetermined pressure in a predetermined direction from a predetermined nozzle of a rod having a plurality of holes in the ground, means for turning the rod at a predetermined swing angle and a predetermined swing speed, and A device for solidifying composition having a means for inserting and extracting underground into a ground at a predetermined speed, and having means according to claim 1 or 2.

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