KR102288516B1 - Real-time data smart automatic recording system used in the marine soft ground improvement method using grain size adjustment aggregate - Google Patents

Abstract

The present invention relates to a real-time automatic data recording system used in the marine soft ground improvement method, for forming a grain size adjustment aggregate compacted pile inside the soft ground by using the grain size adjustment aggregate. According to the present invention, the real-time automatic data recording system used in the marine soft ground improvement method comprises: a sensor unit for measuring data obtained by the construction during the marine soft ground improvement construction in progress; a communication unit for transmitting and receiving the data; a control unit for storing and processing the data received by the communication unit; an input unit for inputting information necessary for the marine soft ground improvement construction; and a display unit (1) for displaying the data measured by the sensor unit and transmitted by the communication unit by a real-time trajectory.

Description

Real-time data smart automatic recording system used in the marine soft ground improvement method using grain size adjustment aggregate

The present invention relates to a combination of a drainage method of draining water inside a soft ground and a method of reinforcing the soft ground by compacting aggregate among the methods of improving and reinforcing the soft ground. More specifically, a ball-type casing and a compaction pile device equipped with an automatic air conditioning device are used, and a particle size adjustment aggregate is used as an aggregate to form a compacted pile, and the data required for the improvement of the soft ground is measured in real time. It relates to a real-time data automatic recording system that can form a high-quality compaction pile by indicating a trajectory.

In Korea, which is surrounded by sea on three sides and the land area is small, it is necessary to use the land efficiently by utilizing the soft ground along the coast. Various structures are being built on top of the soft ground existing on the coast for the efficient use of the land, but the soft ground treatment process is essential because the soft ground does not have enough bearing capacity to be used as the foundation of the structure.

As for the soft ground treatment method currently used. The coagulation method that injects quicklime and stabilizer into the soft ground, the drainage method that makes the ground itself hard by draining the water inside the soft ground (sand-drain method, PBD method, etc.) There is a replacement method of changing the ground with vibration, blasting, electricity, etc. to compact the ground, or a compaction method that increases the density of the ground by compacting crushed stone or sand.

When the soft ground is filled, consolidation does not end in a short time, but because long-term consolidation settlement occurs over a long period of time, there is a problem that the period required for improvement is long. The vertical drain method is widely used.

Among the vertical drainage methods, the Sand Drain method using sand has been widely used because it is easy to construct and has a good drainage effect. However, as a result of the large-scale use of sand for large-scale civil works, it became difficult to obtain the sand required for the treatment of soft ground, and the price increased, resulting in an increase in the construction cost. Therefore, it was necessary to develop an alternative material that has a high effect of improving the soft ground and is inexpensive.

Accordingly, recently, GD (Gravel Drain) and GCP (Gravel Compaction Drain) methods using gravel and crushed stone aggregate have been developed and used as substitutes for sand.

The GCP method is a process of penetrating the casing pipe to a predetermined depth underground, a process of putting gravel, crushed stone, etc. into the casing pipe, as shown in FIG. The process, the process of drawing the casing pipe for a certain distance, and the process of penetrating and drawing the casing pipe are repeatedly performed to form a crushed stone pile in the ground through the compaction action.

However, the above GCP method was able to obtain drainage and compaction effects to a certain extent in the soft ground on land, but the difficulty of construction work is high in the soft ground located on the seabed, and it cannot form a proper compaction pile and is widely spread to the surrounding ground and thrown away. The proportion of aggregate was high, and there was a problem in that it was difficult to obtain a predetermined drainage effect.

In other words, the soft ground of the coast, such as seafloor sedimentary layers or tidal flats, has most of the soil particles of less than 0.001 mm in clay, and the cohesion and strength of the ground are very low. When aggregates such as crushed stone are put in and vibration compacted, the aggregate penetrates into the surrounding soft ground, so compacted piles with a constant top and bottom cross section are not formed. There were many sections where soft ground soil penetrated into the voids between the aggregates and the voids were clogged (clogging phenomenon). There was a problem that the drainage was not done properly because it was not connected vertically, left and right, and was cut off by the infiltration of soil in the middle. Therefore, the strength improvement effect of the surrounding ground clay was insignificant.

The inventors of the present invention determined that the above problems of the existing GCP method are due to the fact that the grain size of the aggregates is not good, the meshing between the aggregates is not made properly, and the voids formed by the aggregates are large.

A particle size distribution curve is used as a method of indicating the particle size composition of aggregates or soil, and an example of the particle size distribution curve is shown in FIG. 15 .

As shown in FIG. 15 , the horizontal axis of the particle size distribution curve indicates the particle size of the soil (aggregate), and the vertical axis indicates the passing weight percentage with respect to the corresponding particle size (sieve size).

As shown in the curve A of FIG. 15 , the left and right range of the particle size curve is large, the gentler the slope, the wider the soil particle distribution range, the left and right range is narrow like the B curve, and the steeper the slope, the narrower the particle distribution range.

As the particle size corresponding to the particle size distribution curve passes through a weight percentage of 10% in the effective diameter and represented by D _10. D ₁₀ refers to the particle size through which 10 wt% of the total soil (aggregate) passes. That is, D ₁₀ means that 10% of the total weight of the soil is smaller than the size _{of D 10.}

In the same way, the particle diameter through which 60% of the total weight of the soil passes is _{called D 60} , and the particle diameter through which 30% of the total weight of the soil passes is called _{D 30.}

Using D ₁₀ , D ₆₀ , and D ₃₀ , the degree of particle size distribution and the particle size distribution state of the soil can be quantitatively expressed.

The coefficient of uniformity (C _u ) is calculated by _{C u} = D ₆₀ / D _{10 .} It can be said that the particle size distribution is poor and close to uniformity.

And, the curve C of FIG. 15 has a relatively wide left and right range, but is meandering up and down. In this case, the particle size distribution state can be quantitatively determined by calculating the coefficient of curvature (C _{g ).} The coefficient of curvature is obtained by the formula _{= (D 30} ) ² / (D ₁₀ × D _{60 ).} When the curvature coefficient is 1 to 3, it can be judged that the particle size distribution is good.

However, the conventional soft ground improvement did not reflect the particle size distribution characteristics of the aggregate, so there was a problem in that the crushed stone aggregate could not be used sufficiently in the soft ground drainage method performed at sea.

And in the GCP method, after penetrating the casing pipe into the ground, aggregate is put into the casing pipe, and a compacted pile is formed by the process of penetration, extraction and re-penetration. Conventionally, without considering the condition of the soft ground and the characteristics of the ground, the method of adjusting the air pressure through manual operation is used only according to the skill level and experience of the operator, so the penetration length and the amount of aggregate inside the casing pipe, and the amount of aggregate inside the casing pipe It was difficult to effectively respond to the change in the internal pressure of the casing pipe, which is changed by the influence of the incoming water pressure and earth pressure, and there was a problem in that there was a problem in that there was a problem in that there was a problem in that work efficiency was lowered, and economic loss due to re-construction and extension of the construction period due to poor construction occurred.

In particular, since it is impossible for the operator to visually check the condition of the seabed in offshore construction performed on the seabed, it is very difficult for the operator to manually control the air pressure. Not only is it difficult to control the air pressure in the casing pipe, which is frequently changed by the Conversely, if the air pressure inside the casing pipe becomes too high, the aggregate is discharged to the ground beyond the specified depth during the drawing process, so that the drainage pile becomes larger than the specified depth or a fault occurs and the loss rate of aggregate increases. There was a growing problem.

In addition, during GCP construction, the construction situation changes every moment depending on the depth, soil quality, water level, etc. of the soft ground. In the conventional GCP construction method, it is not possible to comprehensively and systematically manage and verify various construction data that change in real time. It was difficult to check or read the exact construction condition and quality for workers or supervisory companies as it was only independently checked without any connection between them, and as a result, it became a cause of poor construction.

Korean Patent No. 10-0421540 (2004.03.09.)

In order to solve the problems of the prior art as described above, in the present invention, 'offshore soft ground using granular size adjustment aggregate, which can be a visual analysis and reading means for construction data that changes in real time while carrying out offshore soft ground improvement work The purpose of this is to provide a real-time data automatic recording system used in the improvement method.

In addition, in the present invention, it is possible to intuitively check the construction data to be considered while proceeding with the offshore soft ground improvement construction in real-time trajectory, and to proceed with the construction. The purpose of this is to provide a real-time data automatic recording system used in marine soft ground improvement method.

In addition, in the present invention, the grain size adjustment aggregate is used for the aggregate used for the improvement of the sea soft ground, the meshing between the aggregates is maximized, and the required shear strength is secured by securing the voids that can express the capillary phenomenon to the maximum. The purpose of this is to provide a 'real-time data automatic recording system used in the method of improving the offshore soft ground using granular size-adjusted aggregate' that can exhibit excellent drainage performance.

In the present invention, in the real-time data automatic recording system used in the offshore soft ground improvement method of forming a grain size adjustment aggregate compacted pile inside the soft ground by using the grain size adjustment aggregate, data obtained by the construction during the offshore soft ground improvement work a sensor unit for measuring a communication unit for transmitting and receiving the data; a control unit for storing and processing data received by the communication unit; an input unit for inputting information necessary for the improvement of the offshore soft ground; It provides a real-time data automatic recording system used in the marine soft ground improvement method including a display unit (1) that is measured by the sensor unit and displays the data transmitted by the communication unit by a real-time trajectory.

The sensor unit, an aggregate depth sensor 311 for measuring the depth of the particle size adjustment aggregate inside the ball-type casing pipe 130; Penetration depth sensor 313 for measuring the depth of the tip of the ball-type casing pipe 130; a casing air pressure measurement sensor 314 for measuring the air pressure inside the ball-type casing pipe 130; A current measuring sensor for measuring the amount of current of the vibration hammer (110); It includes a bucket counter for measuring the input frequency of the particle size adjustment aggregate input into the ball-type casing pipe 130 by the moving bucket 162 .

The display unit 1, the bucket count display unit 10; Particle size adjustment aggregate level display unit 20; Grain size adjustment aggregate depth display unit 30; Casing tip depth display unit 40; air pressure display unit 50; Vibration hammer current display unit 60; Including the lowest bottom depth display unit 70, the bucket count display unit 10, the particle size adjustment aggregate level display unit 20, the grain size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the air pressure display unit (50) And the vibration hammer current display unit 60 is characterized in that it is displayed by the trajectory in real time that the construction is in progress.

In the display unit 1, the bucket count display unit 10, the particle size adjustment aggregate level display unit 20, the particle size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the air pressure display unit 50 and the vibration hammer It is characterized in that the current display unit 60 is displayed in order, the bucket count display unit 10 is displayed at the top, and the vibration hammer current display unit 60 is displayed at the bottom.

In the bucket count display unit 10, the number of times of input of the particle size adjustment aggregate measured by the bucket counter is displayed as a real-time trajectory, and in the particle size adjustment aggregate level display unit 20, the ball type casing pipe 130 is filled in. The height change of the top end of the particle size adjustment aggregate is displayed as a real-time trajectory. In the tip depth display unit 40, the depth of the tip of the ball-type casing pipe 130 is displayed as a real-time trajectory, and the air pressure display unit 50 displays the air pressure inside the high-pressure air storage tank as a real-time trajectory. 51); a casing air pressure display unit 52 for displaying the air pressure inside the ball-type casing pipe 130 as a real-time trajectory; and an air nozzle air pressure display unit 53 that displays the air pressure of the upper air nozzle 132b and/or the lower air nozzle 132c as a real-time trajectory, wherein the vibration hammer current display unit 60 includes the vibration hammer 110. It is characterized in that the amount of supplied current is displayed as a real-time trajectory.

The display unit 1 is characterized in that at least one of a computer monitor, CCTV, TV, smartphone, tablet PC, notebook, tabbook, PDA, and printed matter.

The display unit 1 is provided in the offshore work ship (A) undergoing soft ground improvement work, or is provided in a place other than the offshore work ship (A), or the offshore work ship (A) and the offshore work ship (A) ), characterized in that it is provided in all places other than the

The communication unit is characterized in that it transmits and receives data by any one of wired communication, wireless mobile communication, Wi-Fi, Bluetooth, Beacon, and Zigbee.

The control unit includes a data processing unit, and the data processing unit stores and processes data, or the data is stored in a cloud server through the communication unit.

The bucket count display unit 10; Particle size adjustment aggregate level display unit 20; Grain size adjustment aggregate depth display unit 30; Casing tip depth display unit 40; air pressure display unit 50; Vibration hammer current display unit 60; In addition to the real-time trajectory, the bottom bottom depth display unit 70 is characterized in that it is also displayed as a real-time numerical value.

The bucket count display unit 10; Particle size adjustment aggregate level display unit 20; Grain size adjustment aggregate depth display unit 30; Casing tip depth display unit 40; air pressure display unit 50; Vibration hammer current display unit 60; It is characterized in that the color of the lowest depth display unit 70 is displayed differently.

The real-time data automatic recording system used in the method for improving offshore soft ground using the particle size adjustment aggregate of the present invention has the following effects.

First, it is possible to fundamentally block poor construction because the construction can be progressed while checking the construction data necessary for the improvement of the offshore soft ground in real-time trajectory.

Second, since the offshore soft ground improvement work targets the inside of the ground that cannot be visually confirmed, the operator has no choice but to proceed with the work without checking the inside of the ground. The operator can easily check the construction progress inside the soft ground by simply checking the display unit, making the construction work easier.

Third, the supervisor can perform the supervision task simply by checking the display unit according to the construction progress, and can check how the construction has progressed by checking the construction data recorded in real time even after construction.

Fourth, since the construction is managed by the automatic recording system rather than the experience and skill level of the operator, it does not require a skilled worker, thereby reducing the construction cost.

Fifth, when the display unit 1 of the present invention is provided in a place other than the offshore work ship (A), it is possible to remotely check the construction status at a place other than the construction site and perform the supervision task. In particular, when the display unit is equipped with a smartphone, tablet PC, notebook computer, tabbook, and PDA, it can be carried at all times, so that it is possible to check the construction status and perform supervision tasks regardless of the location.

Sixth, by the real-time data automatic recording system and grain size adjustment aggregate of the present invention, crushed stone aggregate, which has been difficult to use in the vertical drainage method of soft ground at sea, can be used, replacing expensive and difficult to obtain sand, and improving soft ground Since crushed stone and stone powder that can be procured near the construction site can be used, construction costs are greatly reduced.

Seventh, the aggregate to be used as a vertical drainage material is drained as a vertical drainage material by performing a sieve size analysis on the aggregate to be used as a vertical drainage material, and confirming that the particle size distribution curve by the sieve size analysis is within the range of the particle size distribution curve presented in the present invention. It can be checked whether performance and strength can be secured. That is, by performing a sieve test on the aggregate to be used, drawing a particle size distribution curve, or _{measuring D 10} , D ₆₀ , D ₃₀ , it is possible to simply check whether it is suitable as a vertical drainage material, and as a result, drainage and improvement can be improved.

Eighth, the particle size adjustment aggregate of the present invention exhibits sufficient vertical drainage performance to improve the soft ground, and the particle size of the aggregate suitable for expressing the required shear strength is evenly secured, and is compacted by a vibration hammer during construction. Since the compacted pile is formed, interlocking between the aggregates is good, the pore size between the aggregates is uniform, and the voids are connected to the top, bottom, left and right of the drainage pile without being cut, so that vertical drainage due to the capillary phenomenon can be smoothly performed.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a schematic view showing a conventional pile construction method for improving the offshore soft ground.
Figure 2 is a schematic diagram showing a pile construction method according to a preferred embodiment of the present invention.
Figure 3 is a side schematic view of a file device showing an automatic positioning system according to a preferred embodiment of the present invention.
Figure 4 is a side schematic view showing a file device according to a preferred embodiment of the present invention.
5 is a schematic plan view showing a file device according to a preferred embodiment of the present invention.
6 is a partial front schematic view showing a pile device according to a preferred embodiment of the present invention.
Figure 7 is a schematic plan view showing the first supply step and the transport step of the input process of the pile method according to a preferred embodiment of the present invention.
8 is a side schematic view showing the second supply step of the input process of the pile method according to a preferred embodiment of the present invention.
Figure 9 is a front schematic view showing the input step of the input process of the pile method according to a preferred embodiment of the present invention.
10 is a partial detailed schematic view showing a file device according to a preferred embodiment of the present invention.
11 is a perspective cross-sectional view showing a ball casing pipe of a ball-type casing pipe according to a preferred embodiment of the present invention.
12 is a front cross-sectional view showing a ball casing pipe of a ball-type casing pipe according to a preferred embodiment of the present invention.
13 is a front cross-sectional view of the ball casing pipe showing the insertion of the ball-type casing pipe according to a preferred embodiment of the present invention.
14 is a front cross-sectional view of the ball casing pipe showing the drawing of the ball-type casing pipe according to a preferred embodiment of the present invention.
15 is an example of a particle size distribution curve
16 is a particle size distribution curve of the particle size adjustment aggregate according to the present invention.
17 is an example of a method for determining a particle size adjustment aggregate according to the present invention.
18 is an embodiment of a display unit according to the present invention.
19 is an embodiment of data management according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily implement them with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification. Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a real-time data automatic recording system used in an offshore soft ground improvement method using a particle size adjustment aggregate. The real-time data automatic recording system used in the method for improving the soft ground at sea will be described first, and then the method for improving the soft ground at sea using the particle size adjustment aggregate will be described.

The real-time data automatic recording system 300 used in the marine soft ground improvement method of the present invention includes a sensor unit, a control unit, a communication unit, an input unit, and a display unit (1).

The sensor unit is configured to measure construction data obtained by construction during offshore soft ground improvement construction, and aggregate depth sensor 311 for measuring the depth of the particle size adjustment aggregate filled in the ball-type casing pipe 130, depth Measuring weight 312, a penetration depth sensor 313 for measuring the depth of the tip of the ball-type casing pipe 130, a casing air pressure sensor 314 for measuring the air pressure inside the ball-type casing pipe 130, high-pressure air storage A tank air pressure sensor (not shown) that measures the air pressure inside the tank, an air nozzle air pressure sensor that measures the air pressure of the upper air nozzle 132b and/or the lower air nozzle 132c (not shown), the vibration hammer 110 ) includes a current measuring sensor (not shown) for measuring the amount of current, and a bucket counter (not shown) for measuring the number of times of input of the particle size adjustment aggregate injected into the ball-type casing pipe 130 by the moving bucket 162 .

The aggregate depth sensor 311 is a means for measuring the input amount (height) of the particle size adjustment aggregate input into the ball-type casing pipe 130 using the depth measurement weight 312, and the depth measurement weight 312 In consideration of the measurement error caused by the impact and friction of the particle size adjustment aggregate, the conventional depth measuring weight having an inverted triangular shape was improved to the depth measuring weight 312 having a cylindrical shape, thereby improving the accuracy and durability of the measurement. .

The penetration depth sensor 313 is a means for measuring the depth at which the ball-type casing pipe 130 penetrates into the ground. The penetration length is measured using the known encoder method that calculates the length through the

The control unit stores, manages and processes construction data such as the height of the particle size adjustment aggregate measured by the sensor unit, the depth of the grain size adjustment aggregate, the depth of the casing tip, the number of times the particle size adjustment aggregate is input, air pressure, and the amount of current of the vibration hammer. Data is controlled to be displayed through the display unit 1 . The control unit may include a data processing unit to store and process data.

In addition, the control unit can record, store, and manage not only construction data measured and input in the process of repeatedly performing penetration and extraction operations, but also specifications of offshore work ships, particle size adjustment aggregate compaction pile apparatus 100, etc. It is displayed through the display unit (1). The various construction data stored and processed here can be utilized as basic data for the soft ground improvement work as well as the soft ground improvement work in the future.

In addition, the present invention may utilize a cloud server as shown in FIG. 19 , wherein various construction data measured by the sensor unit are stored in the cloud server by the communication unit, and construction personnel are free to access the cloud server from a remote location. You can access and check the stored data or use it.

The above construction data is transmitted by the communication unit. For communication, wired or wireless communication can be used, and in the case of wireless communication, mobile communication (3G, LTE, 5G, etc.) Wi-Fi, Bluetooth ), Beacon, Zigbee, etc., various communication methods can be used.

The input unit is a configuration for inputting information necessary for the progress of the marine soft ground improvement work. Through the input unit, it is possible to input the specifications of the construction equipment, the prescribed pressure inside the ball-type casing pipe 130, and the like.

The display unit 1 is a configuration for displaying the construction data measured by the sensor unit and transmitted by the communication unit as a real-time trajectory, a bucket count display unit 10, a particle size adjustment aggregate level display unit 20, Including the particle size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the air pressure display unit 50, the vibration hammer current display unit 60, the lowest depth display unit 70, the bucket count display unit 10, The particle size adjustment aggregate level display unit 20, the grain size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the air pressure display unit 50, the vibration hammer current display unit 60 and the lowest depth display unit 70 are under construction Progress is indicated by the trajectory in real time.

In the exemplary embodiment of the display unit 1 of FIG. 18 , the left vertical axis indicates depth, the lower horizontal axis indicates time (minutes), and depth 0 of the vertical axis indicates sea level.

Among the components displayed on the display unit 1, the real-time trajectory displayed on the particle size adjustment aggregate depth display unit 30, the casing tip depth display unit 40 and the lowest bottom depth display unit 70 is each The change in depth is displayed, and the real-time displayed on the particle size adjustment aggregate level display unit 20, the tank air pressure display unit 51, the casing air pressure display unit 52, the air nozzle air pressure display unit 53, and the vibration hammer current display unit 60 As for the trajectory, the change of each value can be recognized through a scale separately provided on the left side of each display unit.

The aggregate bunker 140 is installed on the offshore work ship (A) to receive the grain size adjustment aggregate from the aggregate storage line (B), and the fixed bucket 150 is connected to the aggregate bunker 140 and the conveyor belt 152 by a conveyor belt 152 . Thus, the particle size adjustment aggregate supplied to the aggregate bunker 140 is supplied using the conveyor belt 152 .

The fixed bucket 150 supplies the particle size adjustment aggregate to the moving bucket 162 when the amount of the grain size adjustment aggregate supplied from the aggregate bunker 140 is supplied by a preset amount, thereby transferring the grain size adjustment aggregate to the moving bucket 162 . It is possible to calculate the amount of grain size-adjusted aggregate according to the number of times supplied.

In the bucket count display unit 10, the number of times of input of the particle size adjustment aggregate measured by the bucket counter is displayed, and the actual input amount of the particle size adjustment aggregate injected into the ball-type casing pipe 130 can be confirmed by checking the number of times. there is.

The particle size adjustment aggregate level display unit 20 is for displaying the level change at the top of the particle size adjustment aggregate filled in the ball-type casing pipe 130 .

The meaning of 'grain size adjustment aggregate level' used in the present invention refers to a change in the height of the top of the filled grain size adjustment aggregate when the grain size adjustment aggregate is filled in the ball-type casing pipe 130, and the height change is the ball The height when the particle size adjustment aggregate is filled inside the type casing pipe 130 is used as a reference line to indicate the amount of change from the reference line. That is, after penetrating the ball-type casing pipe 130 to the support layer, filling the particle size adjustment aggregate up to the reference line, and drawing and penetrating the ball-type casing pipe 130, the particle size adjustment aggregate filled up to the reference line is converted into the ball-type casing pipe ( 130), the level of the granularity-adjusted aggregate goes down by being compacted. And if the particle size adjustment aggregate is refilled to the standard, the level of the particle size adjustment is raised. The particle size adjustment aggregate level display unit 20 displays the change in the level of the grain size adjustment aggregate as a real-time trajectory.

18, the particle size adjustment aggregate level display unit 20 starts from the top of the scale and goes horizontally, and when the ball-type casing pipe 130 is pulled out, the level of the particle size adjustment aggregate gradually decreases and then increases again close to the vertical, and then increases to the top of the scale. When the ball-type casing pipe 130 is drawn again, it can be confirmed that the trajectory decreases again accordingly. The operator can know how much the remaining amount of the particle size adjustment aggregate inside the ball-type casing pipe 130 by checking the particle size adjustment aggregate level display unit (20).

The depth of the tip of the ball-type casing pipe 130 measured by the penetration depth sensor 313 is displayed on the casing tip depth display unit 40 as a real-time trajectory.

The ball-type casing pipe 130 penetrates the inside of the soft ground by the weight of the ball-type casing pipe 130 and the vibration of the vibration hammer 110. Referring to the embodiment of FIG. 18, the casing tip depth display part ( 40) shows a downward sloping trajectory over time and then penetrates to a depth of 29 m, then maintains a constant depth and repeats ascending (pulling out) and descending (penetrating).

Here, a line extending horizontally from the lowest depth (29 m in the embodiment of FIG. 18 ) of the casing tip depth display unit 40 becomes the lowest bottom depth display unit 70 .

The particle size adjustment aggregate depth display unit 30 is for displaying the depth of the upper end of the particle size adjustment aggregate filled in the ball-type casing pipe (130). The meaning of the 'grain size adjustment aggregate depth' used in the present invention indicates the depth of the uppermost end of the grain size adjustment aggregate inside the ball-type casing pipe 130.

In the embodiment of FIG. 18, the grain size adjustment aggregate depth display unit 30 draws a descending curve when the ball-type casing pipe 130 is drawn out, and draws a near-vertical rise curve when the grain size adjustment aggregate is input, and then again when the ball-type casing pipe 130 is drawn. It can be seen that the drawing of the descending curve is repeated. By checking the particle size adjustment aggregate depth display unit 30, the operator can know at which depth the top end of the particle size adjustment aggregate inside the ball-type casing pipe 130 is located.

In FIG. 18, the vertical straight distance (a) between the lowest depth display unit 70 and the depth display unit 40 at the tip of the casing means the vertical height of the compacted pile formed under the ball-type casing pipe 130, and the tip of the casing The vertical straight distance (b) between the depth display unit 40 and the grain size adjustment aggregate depth display unit 30 means the vertical height of the grain size adjustment aggregate inside the ball-type casing pipe 130 .

And, the depth indicated by c among the casing tip depth display unit 40 becomes the port depth (c), and the right trajectory after the port depth (c) is when the ball-type casing pipe 130 exits from the soft ground. is the trajectory of

The air pressure display unit 50 includes a tank air pressure display unit 51 , a casing air pressure display unit 52 , and an air nozzle air pressure display unit 53 .

The tank air pressure display unit 51 is configured to display the air pressure inside the high-pressure air storage tank measured by a tank air pressure sensor (not shown) as a real-time trajectory, and the casing air pressure display unit 52 is a casing air pressure measurement sensor 314 ( 132b) and/or a configuration that displays the air pressure of the lower air nozzle 132c as a real-time trajectory.

The tank air pressure display unit 51, the casing air pressure display unit 52 and the air nozzle air pressure display unit 53 are the particle size adjustment aggregate level display unit 20, the particle size adjustment aggregate depth display unit 30 and the casing tip depth display unit 40. linked to change.

18, the casing air pressure display unit 52 and the air nozzle air pressure display unit ( 53), it can be confirmed that the trajectory of the tank air pressure display unit 51 and the air nozzle air pressure display unit 53 is linked with the trajectory of the casing air pressure display unit 52 .

In the vibration hammer current display unit 60, the amount of current supplied to the vibration hammer 110 is measured and displayed by a current measuring sensor.

Through the change of the vibration hammer current display unit 60, it is possible to know the state of the ground, whether the tip of the ball-type casing pipe 130 has reached the support layer, and the like. For example, looking at the embodiment of FIG. 18, when the casing tip depth display unit 40 reaches the lowest bottom depth display unit 70, the current value of the vibration hammer rapidly increases to 300A (Ampere) and then decreases sharply. It can be confirmed that the tip of the ball-type casing pipe 130 penetrates into the soft ground with low strength and touches the support layer with high strength, so that the amount of current increases rapidly. The internal state of the soft ground of the depth where the tip of 130 is located can be seen.

The bucket count display unit 10, the particle size adjustment aggregate level display unit 20, the grain size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the air pressure display unit 50 and the vibration hammer current display unit 60 are, from above It is preferably displayed in descending order, wherein the bucket count display unit 10 is displayed at the top, and the vibration hammer current display unit 60 is displayed at the bottom.

When displayed by the above sequence relationship, the change of the particle size adjustment aggregate level display unit 20 according to the change of the bucket count display unit 10 can be intuitively and more easily checked, and the bucket count display unit 10 and the particle size adjustment aggregate level display unit Changes in the grain size adjustment aggregate depth display unit 30 and the casing tip depth display unit 40 according to the change in (20) can be easily observed, and the trajectory of the particle size adjustment aggregate depth display unit 30 and the casing tip depth display unit 40 It is easy to check the trajectory of the air pressure display unit 50 and the vibration hammer current display unit 60 according to the

Here, after the tip of the ball-type casing pipe 130 reaches the support layer (the lowest hollow-bottom depth display unit 70), the repeated process (S500) in which the penetration and extraction of the ball-type casing pipe 130 are repeated while in progress, In general soft ground, there is usually no significant change in the amount of current of the vibration hammer, so the importance and frequency of checking the vibration hammer current display unit 60 is small. desirable.

As described above, the present invention provides the bucket count display unit 10, the particle size adjustment aggregate level display unit 20, the grain size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the tank air pressure display unit 51, the casing By using the correlation between the air pressure display unit 52, the air nozzle air pressure display unit 53, the vibration hammer current display unit 60, and the lowest depth display unit 70, it is possible to intuitively, comprehensively, and systematically grasp the construction status, and the As a result, efficient and high-quality construction can be carried out.

The display unit 1 is a configuration for workers and/or supervisors to comprehensively and intuitively check and read the construction status, and at least among computer monitors, CCTVs, TVs, smartphones, tablet PCs, laptops, tabbooks, PDAs, and printed materials. It can be any one.

The display unit 1 may be a computer monitor, CCTV, or TV provided on the offshore work ship (A), or a computer monitor, CCTV, or TV provided in a place other than the offshore work ship (A). It may be a smartphone, tablet PC, notebook, tabbook or PDA connected to the computer of the maritime work ship (A) by wire or wireless, or it may be a printed matter printed on paper, synthetic resin, etc.

As described above, since the display unit 1 of the present invention can be displayed by various smart devices through wired and wireless communication, there is a special effect that can confirm, manage and supervise construction regardless of location. That is, the display unit (1) may be provided on the offshore work ship (A) for the improvement of the offshore soft ground, and the construction and/or supervision may be carried out while grasping the construction status on the offshore work ship, and the display unit (1) is installed in a place other than a marine work vessel (A) - a company building other than a construction site, a supervisory company, the residence of a construction official, etc. There is an advantage that

Moreover, since smartphones, tablet PCs, laptops, tabbooks, and PDAs are always portable, it has a special effect of being able to check the construction status and perform supervision work wherever wireless communication such as Wi-Fi is possible.

In addition, the bucket count display unit 10, the particle size adjustment aggregate level display unit 20, the particle size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the tank air pressure display unit 51, the casing air pressure display unit 52, The real-time trajectory displayed on the air nozzle air pressure display unit 53, the vibration hammer current display unit 60, the lowest bottom depth display unit 70, and the vertical straight distance between the lowest cavity depth display unit 70 and the casing tip depth display unit 40 ( a), the vertical straight distance (b) and port depth (c) between the casing tip depth display unit 40 and the grain size adjustment aggregate depth display unit 30 are real-time numerical values through a separate table displayed on the display unit 1 Also, in order to make it easier to identify the display parts, the bucket count display unit 10, the particle size adjustment aggregate level display unit 20, the grain size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, The color of the air pressure display unit 50, the vibration hammer current display unit 60, and the lowest depth display unit 70 can be different from each other, and even within the air pressure display unit 50, the tank air pressure display unit 51, the casing air pressure display unit 52, The color of the air nozzle air pressure display unit 53 may be displayed differently.

The grain size-adjusted aggregate used in the present invention is an aggregate for promoting the drainage of the soft ground and enhancing the strength of the ground by using it in the offshore soft ground improvement method. The particle size adjustment aggregate may include at least one of crushed stone, gravel, crushed concrete, stone powder, sand, and blast furnace slag.

The particle size adjustment aggregate of the present invention, 'the maximum dimension is less than 25mm, the 200 sieve (sieve size 0.075mm) passing rate is 1 to 6% by weight, and the particle diameter (D ₁₀ ) corresponding to 10% of the passing weight percentage is 0.3 to 0.9 mm _{, the particle diameter (D 30} ) corresponding to 30% of the passing weight percentage is 1.7 to 4.0 mm, and the particle diameter (D ₆₀ ) corresponding to 60% of the passing weight percentage is 5.0 to 8.0 mm 'and/or 'as shown in FIG. 16 , It refers to an aggregate having a particle size distribution curve within the range between the lower grain size limit curve and the upper grain size limit curve.

The maximum dimension of the particle size adjustment aggregate specified above, the pass rate of 200 sieve, and D ₁₀ , D ₃₀ , and D ₆₀ are not determined independently of each other, but are determined organically under interaction with each other, and these parameters are By acting organically in the grain size adjustment aggregate, the aggregates are firmly engaged with each other in the compaction pile, and uniform voids are formed vertically and horizontally.

When the size of the aggregate forming the compaction pile is 25 mm or more, the meshing between the aggregates is not good, the void becomes too large, so capillary action is difficult to occur, and clogging is easy to occur, so the particle size of the present invention The maximum dimension of the adjusted aggregate should be less than 25mm in order to work organically with the numerical ranges _{of D 10} , D ₃₀ , and D _{60 .}

If there are a lot of fine powder of particle size less than 0.075mm in the aggregate to form a compaction pile, is too small, so the air gap decreases the vertical drainage effect, the particle size adjustment aggregate of the present invention are organically and the numerical range of D _10, D _30, D ₆₀ In order to act, the passing rate of No. 200 sieve is 1 to 6% by weight.

And 10% by weight of the total grain size adjustment aggregate is used to pass through the sieve size of 0.3 ~ 0.9 mm. If D ₁₀ is smaller than 0.3 mm, there are many fine particles, so it is difficult to expect engagement and drainage effect between the aggregates, and D ₁₀ is 0.9 mm If it is larger, the voids between the aggregates become larger and capillary action is reduced.

Full adjustment of the particle size aggregate to 30% by weight, it is difficult to expect the effect of the engagement between the drain and the more finely divided aggregate If sieve opening size is less than 1.7 ~, D ₃₀ for use to pass a 4.0 mm is 1.7mm, than the D ₃₀ 4.0mm If it is large, the voids between the aggregates become larger, thereby reducing capillary action.

60% by weight of the total grain size-adjusted aggregate is used to pass through the sieve size of 5.0 ~ 8.0 mm. If D ₆₀ is smaller than 5.0 mm, there is a lot of fine powder, so it is difficult to expect engagement and drainage effect between the aggregates, and if D ₆₀ is less than 8.0 mm If it is large, the voids between the aggregates become larger, thereby reducing capillary action.

The maximum dimensions described above, the 200 sieve passing amount, and D ₁₀ , D ₃₀ , and D ₆₀ are all organically combined to form a particle size distribution. It affects the left-right range and curvature of the lower-limit curve and upper-limit curve of particle size, and in the end, such aggregate is an aggregate with reduced interlocking and drainage effects.

When explaining the particle size distribution curve of the particle size adjustment aggregate in FIG. 16, the horizontal axis of FIG. 16 indicates the particle size (unit: mm) of the particle size adjustment aggregate, and the particle size increases from right to left, and is displayed from 0.001 mm to 100 mm has been However, since the maximum dimension of the particle size adjustment aggregate of the present invention is less than 25 mm, the particle size distribution curve of the particle size adjustment aggregate is used up to 25 mm (refer to the 25 mm red line in FIG. 16). In addition, a red line corresponding to 0.075 mm (a red line on the right of the two red lines) is also shown in FIG. 16, which is a line drawn to easily indicate the amount of passing through the No. 200 system.

The vertical axis of FIG. 16 represents the passing weight percentage with respect to the corresponding particle size (sieve size) of the particle size-adjusted aggregate.

In the particle size lower limit curve of Figure 16, the passing rate of No. 200 is 6% by weight, the particle diameter (D ₁₀ ) corresponding to the passing weight percentage of 10% is 0.3 mm, the particle size corresponding to the passing weight percentage of 30% (D ₃₀ ) is 1.7 mm, _{The particle diameter (D 60} ) corresponding to 60% of the passing weight percentage is 5.0 mm, and the upper limit curve of the particle size shows that the 200 sieve pass rate is 1 wt %, and the particle diameter (D ₁₀ ) corresponding to 10% of the passing weight percentage is 0.9 mm, passing through It indicates that the particle diameter (D ₃₀ ) corresponding to 30% by weight is 4.0 mm, and the particle diameter (D ₆₀ ) corresponding to 60% of passing weight is 8.0 mm.

Therefore, after performing a sieving test on the aggregate to be used at the site of the soft ground improvement construction, as a result of drawing a particle size distribution curve for the aggregate, the particle size distribution curve of the aggregate is within the range between the particle size lower limit curve and the particle size upper limit curve of FIG. If it appears as a gentle curve, the aggregate can be judged to be of good quality with excellent drainage effect and shear strength. If it is not located within the range, the particle size distribution of the aggregate is judged to be unsuitable as a material for compacted piles for improving soft ground.

Some particle size distribution curves are shown in FIG. 17. The (a) particle size distribution curve of FIG. 17 is determined to be a high-quality particle size-adjusted aggregate because the entire curve is located within the range between the lower grain size curve and the upper grain size curve.

In addition, the (B) particle size distribution curve and (D) particle size distribution curve of FIG. 17 cannot be used as a particle size adjustment aggregate because most of the curves are outside the range between the particle size lower limit curve and the upper grain size curve, and (C) particle size distribution In the case of curves, most of the curves are located within the range between the lower grain size curve and the upper grain size curve, but some of them are outside the range between the lower grain size curve and the upper grain size curve, so it cannot be used as a grain size adjustment aggregate.

In addition, in determining the quality of the aggregate, in addition to the method of determining by the particle size distribution curve, it is possible to determine the quality of the aggregate by the numerical values of _{D 10} , D ₃₀ , D _{60 . That is, the quality of the aggregate can be confirmed by obtaining D 10} , D ₃₀ , and D ₆₀ after performing a sieve test on a certain aggregate, and checking whether these values are within the specified numerical range above.

Check that D ₁₀ is 0.3 ~ 0.9 mm, D ₃₀ is 1.7 ~ 4.0 mm, and D ₆₀ is 5.0 ~ 8.0 mm. If D ₁₀ , D ₃₀ , and D ₆₀ satisfy each range, the aggregate is drained It can be a material for compacted piles with excellent effect and shear strength, and if any one of the three ranges is exceeded, it is judged as an unsuitable aggregate.

Hereinafter, a particle size adjustment aggregate compaction pile device having a ball-type casing and an automatic air conditioning device used in the present invention will be described.

The particle size-adjusted aggregate compaction pile apparatus 100 having a ball-type casing and automatic air conditioning device of the present invention is an aggregate bunker 140 that receives a particle size-adjusted aggregate from an aggregate storage line (B) in which the particle size-adjusted aggregate is stored. ), at least one fixed bucket 150 receiving the grain size adjusting aggregate supplied to the aggregate bunker 140, and the moving bucket 162 receiving a preset amount of grain size adjusting aggregate from the fixed bucket 150 is raised and lowered. The leader 160 installed so as to be able to do so, is installed on the front side of the leader 160, the vibration hammer 110 is installed on the upper part, and the hopper 120 is provided on one side of the upper part of the outer periphery to move the bucket 162 While receiving the particle size adjustment aggregate from the hopper 120, the ball-type casing pipe 130, which is penetrated and drawn into the ground, is formed in the ball-type casing pipe 130, and is connected to the compressor 341 and is connected to the The pressure valve 321 for increasing the air pressure inside the ball type casing pipe 130, the pressure reducing valve 322 for lowering the air pressure inside the ball type casing pipe 130, and the pressure valve 321, the pressure reducing valve 322 ), the casing air pressure measurement sensor 314, the penetration depth sensor 313, the aggregate depth sensor 311 to control the air pressure inside the ball-type casing pipe 130 to uniformly control the air pressure in the configuration including do.

The aggregate bunker 140 is installed on the offshore work ship (A) to receive the particle size adjustment aggregate from the aggregate storage line (B), and the fixed bucket 150 is installed on the aggregate bunker 140 and the conveyor belt 152. The particle size adjustment aggregate connected to the aggregate bunker 140 is supplied by using the conveyor belt 152 .

The fixed bucket 150 supplies the particle size adjustment aggregate to the moving bucket 162 when the amount of the grain size adjustment aggregate supplied from the aggregate bunker 140 is supplied by a preset amount, thereby transferring the grain size adjustment aggregate to the moving bucket 162 . It is possible to calculate the amount of grain size-adjusted aggregate according to the number of times supplied. At this time, a bucket counter is provided to measure the number of supplied buckets.

To this end, the fixed bucket 150 is a load cell (not shown) that measures the weight in order to supply a preset amount of particle size adjustment aggregate to the moving bucket 162 and/or a level for measuring the stacking height of the supplied particle size adjustment aggregate It may be configured to include a master (not shown), and the load cell and/or level master measures the amount of particle size adjustment aggregate supplied from the aggregate bunker 140 through weight and/or height, and adjusts the particle size by a preset amount. When the amount of aggregate is supplied, it is supplied to the moving bucket 162 .

In addition, when the particle size adjustment aggregate compaction pile device of the present invention supplies a preset amount of particle size adjustment aggregate to the moving bucket 162 through the fixed bucket 150 as described above, the actual used particle size adjustment aggregate amount It can be checked, and the loss rate of the particle size adjustment aggregate can be confirmed by comparing the required amount of grain size adjustment aggregate predicted before implementation of the construction method and the amount of grain size adjustment aggregate actually used, thereby adjusting the grain size required for the construction of adjacent compacted piles continuously constructed. It is possible to obtain the effect of improving the construction efficiency by making the prediction and supply of aggregates quickly and smoothly.

The leader 160 is installed so that a moving bucket 162 receiving a predetermined amount of particle size adjustment aggregate from the fixed bucket 150 is raised and lowered on one side, and the ball-type casing pipe 130 is the leader 160 It is installed on the front of the and a vibration hammer 110 is installed on the upper part, and a hopper 120 is provided on one side of the upper part of the outer periphery to penetrate and withdraw into the ground.

That is, after the ball-type casing pipe 130 is penetrated by the vibration hammer 110 in the offshore soft ground improvement method to be described in detail later, the particle size adjustment aggregate from the fixed bucket 150 to the moving bucket 162 When is supplied, the moving bucket 162 rises along the leader 160 and supplies the particle size adjustment aggregate to the hopper 120 of the ball type casing pipe 130 to adjust the particle size to the inside of the ball type casing pipe 130 . After the aggregate is supplied, the ball-type casing pipe 130 is pulled out, and the particle size-adjusting aggregate is discharged to the bottom, and the particle-size-adjusting aggregate discharged as the ball-type casing pipe 130 penetrates again is compacted to form a compacted pile. .

The ball-type casing pipe 130 has a cylindrical shape having a constant diameter to penetrate into the soft ground of the seabed to supply the particle size adjustment aggregate, and the casing pipe 131 provided at the upper part and the ball casing pipe provided at the lower part 132, and the ball casing pipe 132 is coupled to the lower portion of the casing pipe 131 to extend in the vertical direction.

Looking at the ball-type casing pipe 130 in detail, the casing pipe 131 in which the vibration hammer 110 is installed on the upper part, the hopper 120 is provided on one side of the upper outer periphery, the lower part of the casing pipe 131 . The ball casing pipe 132, which is coupled to the lower portion and has an extension portion 132a having an expanded diameter, is formed in the longitudinal direction spaced apart from the inner surface of the extension portion 132a by a certain distance, and is formed in the lower portion in the inward direction A plurality of reinforcing wings 134 from which the lower protrusions 134a protrude, an annular sealing member 136 formed to be positioned on the upper portion of the reinforcing wings 134, the lower protrusions of the plurality of reinforcing wings 134 ( 134a) includes a ball support 138 formed on the upper portion and a ball 139 that is installed to be movable up and down between the sealing member 136 and the ball support 138 .

The ball casing pipe 132 has an upper portion having the same diameter as that of the casing pipe 131 and is coupled to the lower portion of the casing pipe 131 to extend, and an extension portion 132a having an expanded diameter at the lower portion is provided. is formed, and a plurality of reinforcing wings 134, sealing member 136, ball support 138, and ball 139 are installed inside the expansion part 132a so that the ball-type casing pipe 130 is underground. When the ball 139 penetrates, the inflow of dirt can be prevented, and when the ball-type casing pipe 130 is drawn out, the particle size adjustment aggregate is discharged by the expansion part 132a, the diameter of which is expanded. to make it run smoothly.

An arc-shaped contact portion (not shown) corresponding to the ball 139 is formed on the inner surface of the reinforcing wing 134 to prevent the ball 139 from moving upward through the reinforcing wing 134 . .

The reinforcing wing 134 for forming the close contact portion is configured to include an upper protrusion 134b protruding in the inner direction of the ball casing pipe 132 on the upper portion, and the inner surface of the upper protrusion 134b, that is, The contact portion is formed on the surface formed in the inner direction of the ball casing pipe 132 . Therefore, when the ball-type casing pipe 130 is penetrated into the ground, the ball 139 is in close contact with the contact portion of the reinforcing wing 134, so that the adhesion between the ball 139 and the reinforcing wing 134 is more A strengthening effect can be obtained. At this time, if the curvature of the contact part and the curvature of the ball 139 are made the same, the effect of closer contact may be obtained.

At this time, the reinforcing wing 134 is configured to include a lower protrusion 134a protruding in the lower portion in the inward direction so that the particle size adjustment aggregate can be discharged to the lower portion, and the ball support 138 is the lower protrusion 134a. ) is stably provided at the top.

A sealing member 136 is formed around the upper portion of the reinforcing wings 134 , and the sealing member 136 is formed in an annular shape so as to be positioned above the reinforcing wings 134 , and the reinforcement An annular close contact portion to which the ball 139 is in close contact is formed together with the inner surface of the wing 134 , so that when the ball-type casing pipe 130 penetrates, the ball 139 expands the ball casing pipe 132 . The inside of the (132a) is sealed, the effect of preventing the inflow of dirt is realized. At this time, the inner diameter of the sealing member 136 should be smaller than the outer diameter of the ball.

The sealing member 136 has a structure in which the cross-section is formed to protrude in the shape of ">" at the same position as the contact portion of the reinforcing wing 134 to maintain the sealed state when the ball 139 is in close contact, and The upper plate 136a inclined to protrude, the lower plate 136c inclined opposite to the upper plate 136a, and the support plate 136b are formed in the inner center of the upper plate 136a and the lower plate 136c to form a ball 139 ), the shape is stably maintained after it is adhered.

At this time, the ball 139 has a hollow spherical shape and is configured to float upward when buoyancy is applied by seawater or soil, and the ball support 138 is formed when the ball-type casing pipe 130 is drawn out. By supporting the lower portion of the ball 139, the ball 139 is prevented from being separated from the extension portion 132a of the ball casing pipe 132, as well as the particle size adjustment aggregate inside the ball-type casing pipe 130. It realizes the effect of smoothly discharging to the outside.

The operation of the ball-type casing pipe 130 of the present invention having the above configuration will be described as follows. First, when seawater and soil are introduced through the lower part of the ball casing pipe 132 in the process of penetrating the ball-type casing pipe 130 into the underground of the seabed soft ground, the buoyancy of the seawater and soil acts as the ball 140 This rises, and accordingly, the ball 139 is firmly in close contact with the contact portion between the sealing member 136 and the reinforcing blade 134 to prevent the inflow of seawater and soil into the ball casing pipe 132 . .

Conversely, when the ball-type casing pipe 130 is drawn out after the particle size-adjusting aggregate is put into the ball-type casing pipe 130, the ball by gravity of the particle-size adjustment aggregate and the air pressure inside the ball-type casing pipe 130 (139) descends, and the ball 139 is seated on the ball support 138, and the particle size adjustment aggregate is quickly and through the space formed between the inner surface of the ball casing pipe 132 and the ball 139. As it is discharged smoothly, compacted piles are formed in the ground.

That is, the ball-type casing pipe 130 of the present invention can improve the construction quality of the compacted pile by more effectively preventing the inflow of seawater and soil through the configuration as described above together with the air pressure formed therein.

In addition, an upper air nozzle 132b and a lower air nozzle 132c may be provided on the upper portion of the ball casing pipe 132 . The upper air nozzle 132b is positioned above the lower air nozzle 132c, and the lower air nozzle 132c is positioned above the extended part 132a.

The upper air nozzle (132b) realizes the effect of allowing the air pressure inside the ball-type casing pipe 130 to be stably and quickly formed into a uniform pressure throughout, and at the same time, to smoothly discharge the particle size adjustment aggregate. .

The lower air nozzle (132c) together with the upper air nozzle (132b) makes the discharge of the grain size adjusting aggregate more smoothly, so that the compaction pile by the grain size adjusting aggregate can be smoothly formed, and also of the grain size adjusting aggregate. It realizes the effect of smoothly drawing out the ball-type casing pipe 130 together with the discharge.

At least one of the upper air nozzle 132b and the lower air nozzle 132c may be provided. Preferably, each is provided as a pair, and when provided as a pair, the upper air nozzle 132b and the lower air nozzle 132b It is preferable that the nozzles 132c are disposed in a direction perpendicular to each other. When the upper air nozzle (132b) and the lower air nozzle (132c) spray air in an orthogonal direction, it exhibits the effect of allowing the discharge, mixing, compaction and engagement of the particle size adjustment aggregate to be made more smoothly.

At this time, the upper air nozzle (132b) and the lower air nozzle (132c) are formed so that the portion inside the ball casing pipe 132 is inclined downward so that the air is sprayed in the downwardly inclined direction. The same effect can be realized more efficiently.

In addition, the ball casing pipe 132 is formed to protrude upwardly on the outer periphery, and a guide protection part 132d formed to be positioned under the upper air nozzle 132b and the lower air nozzle 132c. The guide protection part 132d realizes the effect of preventing damage to the upper air nozzle 132b and the lower air nozzle 132c when the ball-type casing pipe 130 is penetrated or pulled out. do it

In particular, the particle size adjustment aggregate of the present invention has a good particle size distribution as described above, and has a particle size and a mixing ratio that can express a special effect in a compacted pile of an offshore soft ground. It plays a role of allowing the particle size-adjusted aggregate to be evenly mixed and discharged. After that, if a compaction pile is formed by a vibration hammer and repeated process, interlocking and compaction effects are good, so high shear strength is exhibited, and the voids between the aggregates are not cut. It can be formed uniformly without a capillary phenomenon, thereby exhibiting a special effect of smoothly performing vertical drainage due to capillary action.

In addition, the ball casing pipe 132 may be configured to include at least a pair of water nozzles 132e provided in a lower portion of the outer periphery of the extension portion 132a, and the ball-type casing is formed by the water nozzles 132e. When the pipe 132 is penetrated, the perforated water is injected so that the ball-type casing pipe 132 can penetrate more smoothly.

The casing air pressure measurement sensor 314 measures the air pressure inside the ball-type casing pipe 130 in real time and displays it through the display unit 1, and sets the air pressure inside the ball-type casing pipe 130 to a prescribed pressure It provides a basic measure to keep it constant at all times compared to .

The pressure valve 321 operates the compressor 341 when the measured value measured from the casing air pressure measurement sensor 314 is lower than the prescribed pressure to increase the air pressure inside the ball type casing pipe 130, and the pressure reducing valve 322 is opened when the measured value measured from the casing air pressure measurement sensor 314 is greater than the prescribed pressure to lower the air pressure inside the ball-type casing pipe 130 .

The detailed description of the method for improving the offshore soft ground using the ball-type casing and the automatic air conditioning device and the particle size adjustment aggregate of the present invention as described above is as follows.

Offshore soft ground improvement method of the present invention includes a surveying process (S100), a penetration process (S200), an input process (S300), a drawing process (S400) and a repeating process (S500).

First, the surveying process (S100) is to accurately determine the penetration position of the ball-type casing pipe 130 using the automatic positioning system 200, the automatic positioning system 200 is GPS (Global Positioning) System) to check the construction position of the present invention, that is, the penetration position of the ball-type casing pipe 130, and in particular, the automatic positioning system 200 used in the present invention is the artificial satellite 210 and known precision surveying. By applying the real-time kinematic function for the purpose of continuous measurement of the position and direction of the marine working ship (A) for the improvement of the weak ground in the sea, the GPS observation data is transmitted through the wireless communication device 230 and the GPS antenna 210 of the sea. A method of continuous transmission toward the maritime working vessel A having the base station 241 is used.

At this time, the precise location is measured by transmitting and receiving GPS signals of the base station 240 on land and the GPS signal of the offshore work ship (A) for improving the soft ground, and the coordinates measured on the offshore work ship (A) for improving the soft ground is automatically entered into the program to automatically calculate the position of the offshore work ship (A) for the improvement of the soft ground.

If there is a difference in the construction position depending on the position of the offshore work ship (A) for improving the soft ground measured in this way, adjust the anchor wire formed on the offshore work ship (A) and move it to the correct construction location If it moves, the penetration process can be performed after fixing the anchor wire. At this time, when GPS malfunctions or reception is impossible, the construction location may be measured using a light wave, which is a manual distance measuring device.

In the present invention, the position error of the ball-type casing pipe 130 is ±10 cm, and the vertical error of the ball-type casing pipe is preferably within ±3°. At this time, in order to adjust the verticality of the ball-type casing pipe 130, the seawater is supplied or discharged to the water tanks (not shown) formed on both sides of the offshore work ship (A) for the improvement of the offshore soft ground. By adjusting the verticality of the ball-type casing pipe 130 can be adjusted.

In the penetration process (S200), the penetration depth of the ball-type casing pipe 130 and the air pressure inside the ball-type casing pipe 130 are measured in real time, and the measured data is compared with a preset prescribed pressure and then automatic air It allows the internal air pressure of the ball-type casing pipe 130 to be maintained at a preset prescribed pressure by the adjusting device.

The preset prescribed pressure was determined through numerous constructions and experiments by the inventor in consideration of the characteristics of various seabed ground for many years, and is the same as "Pressure according to depth" in Table 1 below.

Depth (m) Surface to 20m 21-30m 31-40m 41-50m 51-60m 61-70m regulated pressure
(kg/cm2) 1.2~3.5 3-4 4-5 5~6.5 6.5~8 8-10

In the present invention, as confirmed in Table 1, the position of the tip of the ball-type casing pipe 130 maintains the minimum pressure among the prescribed pressures from the ground surface to the ground surface from the water surface to the ground surface, and the ground surface to 20 m is 1.2 to 3.5 kg / In cm2, 21~30m, the penetrating process of the ball type casing pipe 130 is made while maintaining the air pressure of 3~4kg/cm2 and gradually increasing the air pressure inside the ball type casing pipe 130. Conversely, the ball type In the drawing process (S400) of drawing the casing pipe 130, the penetration depth of the ball-type casing pipe 130 is 21 to 30 m, and the air pressure is maintained at 3 to 4 kg/cm2, and the ground to 20 m is 1.2 to 3.5 kg/ The drawing process is performed while gradually decreasing the air pressure of cm2. In this case, the prescribed pressure may be adjusted within the above range according to the soil condition and working environment of the seabed to be constructed.

That is, the preset pressure of the intrusion process (S200) and the drawing process (S400) is classified into sections of ground surface ~ 20m, 21m ~ 30m, 31m ~ 40m, 41m ~ 50m, 51m ~ 60m, 61m ~ 70m, but the depth is It is set to increase sequentially as the depth increases.

In addition, in the offshore soft ground improvement method of the present invention, in the drawing process (S400), by further subdividing the preset pressure within the section from the ground surface to 20 m, when the ball-type casing pipe 130 is completely drawn out from the ground, the It can prevent breakage and equipment damage.

The drawing process (S400) is divided into sections of the preset pressure as described above, but is set to decrease in the reverse order, in particular, for the section from the ground surface to 20 m, subdivided into sections of the ground surface ~ 3 m, 3 m ~ 6 m, 6 m ~ 20 m By classifying and decreasing in the reverse order, damage to the ground and equipment is prevented as described above.

In addition, when the ball-type casing pipe 130 is completely withdrawn from the ground, conventionally, the air pressure maintained therein is too high, so the ground around the upper end of the compacted pile and the upper end of the compacted pile are damaged. The construction of the compaction pile was not made smoothly, and in particular, there was a high risk of damage to equipment including the casing pipe due to the phenomenon that the casing pipe for construction was bouncing, and there were cases where it could lead to a safety accident. This problem was solved by presenting the subdivided air pressure as in Table 2.

Specifically, in the section from the ground surface to 20 m, the air pressure of the subdivided section of the drawing process (S400) is shown in Table 2.

Depth (m) Surface to 3m 3~6m 6-20m Regulated pressure (kg/㎠) 1.2~1.5 1.5~2.4 2.4~3.5

On the other hand, before the drawing process (S400), an input process (S300) of inputting the particle size adjustment aggregate into the ball-type casing pipe 130 is performed. The input process (S300) includes a first supply step (S310) of supplying the particle size adjustment aggregate stored in the aggregate storage line 400 to the aggregate bunker 140 of the particle size adjustment aggregate compaction pile apparatus 100, and the aggregate bunker. A transport step (S320) of moving the particle size adjustment aggregate supplied to 140 to at least one fixed bucket 150 using the conveyor belt 152, and the particle size adjustment aggregate moved to the fixed bucket 150 The second supply step (S330) of supplying the moving bucket 162 provided in the leader 160 of the adjusted aggregate compaction pile apparatus 100 and the moving bucket 162 rises along the leader 160 to form a ball type It includes an input step (S340) of inputting the particle size adjustment aggregate into the hopper 120 provided on the upper portion of the casing pipe (130).

That is, the input process (S300) is from the aggregate storage line 400 in which the particle size adjustment aggregate is stored through the hopper 120 of the ball-type casing pipe 130 until it is input into the inside of the ball-type casing pipe 130. The process of the required grain size adjustment is made as much as the amount of aggregate.

At this time, in the second supply step (S330), the number of times of supplying the particle size adjustment aggregate from the fixed bucket 150 to the moving bucket 162 is counted to adjust the particle size input into the ball-type casing pipe 130. By calculating the amount of aggregate, it is possible to check the amount of grain size adjusted aggregate for forming the compacted pile, and accordingly, the work can proceed while checking whether the amount of grain size adjusted aggregate calculated by the machine is input or not, so that the work can be done more efficiently.

In addition, when the above-described penetration process (S200) is repeatedly executed, the amount of particle size adjustment aggregate calculated in the second supply step (S330) is compared with the penetration length of the ball type casing pipe 130, and the loss rate of the particle size adjustment aggregate is compared. can be calculated, which compares the initially calculated required amount of grain size adjusted aggregate with the amount of grain size adjusted aggregate actually used and makes it a reference for the construction of other compacted piles that are subsequently constructed, thereby realizing the effect of making the work more smooth. do it

In addition, when the repeated penetration process (S200) is executed, the shape of the cross section is not constant depending on the strength of the ground, and it may have a convex shape in some sections. A larger amount of grain size adjustment aggregate than the initially calculated required amount of grain size adjustment aggregate can be used. By counting the number of times that the particle size adjustment aggregate is supplied from the fixed bucket 150 to the moving bucket 162 to confirm this, it is easy to grasp the amount of the particle size adjustment aggregate actually used. For this purpose, as described above, a load cell and/or a level master are installed in the fixed bucket 150 .

In the input step (S340), air may be injected to the particle size adjustment aggregate input by the upper air nozzle (132b) and/or the lower air nozzle (132c). Preferably, they can be sprayed simultaneously.

A pair of upper air nozzles and a pair of lower air nozzles are provided, and an upper air nozzle and a lower air nozzle are provided so that the air injection direction of the upper air nozzle is perpendicular to the air injection direction of the lower air nozzle, and each air is sprayed When this is done, the particle size adjustment aggregate, which is uniformly mixed in the particle size, is evenly mixed and discharged, and a compacted aggregate pile with better compaction and interlocking can be formed. be able to

After the penetration process (S200) to the extraction process (S400) is performed, the repeated process (S500) of forming a compacted pile up to the surface of the soft ground is performed while continuously repeating the processes of penetration, particle size adjustment aggregate input, and drawing. During the process (S200) to the repeating process (S500), the construction data is continuously measured by the sensor unit, and the measured construction data is displayed through the display unit 1, and the operator operates the display unit 1 While confirming, the penetrating process (S200) to the repeating process (S500) are performed.

The particle size-adjusted aggregate used in the present invention is an aggregate whose particle size distribution curve exists in the space between the lower limit curve and the upper limit curve of the particle size of the particle size distribution curve shown in FIG. In the present invention, by deriving the parameters with the particle size distribution curve in the vertical drainage method, the quality of the aggregate used in the offshore soft ground improvement method can be guaranteed, and also compacted piles capable of exhibiting a predetermined drainage effect by using these properties It is possible to pre-inspect the quality of the grain size-adjusted aggregate that can be used for

Before the input process (S300), a sieving test is performed on the aggregate to be used, and by checking whether the particle size distribution curve obtained by the sieving test is located between the lower limit curve of the particle size and the upper limit of the particle size of the particle size distribution curve of FIG. It can be checked whether the aggregate is suitable for forming compacted piles.

In other words, if a sieving test is performed on the aggregate to be used, and all of the particle size distribution curves obtained by the sieving test are not located inside the space between the particle size lower limit curve and the particle size upper limit curve of FIG. It should be used after adjustment, and when all of the particle size distribution curves are within the range between the lower limit curve of particle size and the upper limit curve of particle size shown in FIG.

In addition, the aggregate quality inspection process (S201) is performed not only on the particle size distribution curve, but also on the particle diameter (D ₁₀ ) corresponding to the passing weight percentage of 10%, the particle diameter corresponding to the passing weight percentage of 30% (D ₃₀ ) and the passing weight percentage of 60%. It can also proceed by checking whether the corresponding particle size (D ₆₀ ) exists within the numerical range described above.

When the particle size adjustment aggregate is provided according to the numerical range derived from the present invention, a special effect of obtaining high-quality aggregate required for the improvement of the weak seashore is exhibited.

The real-time data automatic recording system of the present invention provides construction data during the intrusion process (S200) to the repeat process (S500) so that efficient and high-quality construction can be carried out.

Although the present invention has been described with reference to the embodiment shown in the drawings, which is merely exemplary, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom.

Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

1: display unit
10: bucket count display unit
20: particle size adjustment aggregate level display part
30: grain size adjustment aggregate depth display part
40: casing tip depth display part
50: air pressure display unit
51: tank air pressure display unit 52. casing air pressure display unit
53: air nozzle air pressure display part
60: Vibration hammer current display unit
70: lowest seam depth line
A : Offshore work vessel B : Aggregate storage vessel
100: particle size adjustment aggregate compaction pile device
110: vibration hammer 120: hopper
130: ball type casing pipe
131: casing pipe 132: ball casing pipe
132a: extended part 132b: upper air nozzle
132c: lower air nozzle 132d: guide protection part
132e: water nozzle 134: reinforcement wing
134a: lower protrusion 136: sealing member
138: ball support 139: ball
140: aggregate bunker 150: fixed bucket
160: leader 162: moving bucket
152: conveyor belt
200: automatic positioning system
210: satellite 220: GPS antenna
230: wireless communication device 240: ground base station
241: maritime base station
300: Real-time data automatic recording system
311: aggregate depth sensor 312: depth measuring weight
313: depth of penetration sensor 314: casing air pressure sensor
321: pressure valve 322: dampening valve

Claims (11)

In the real-time data automatic recording system used in the marine soft ground improvement method of forming a compacted grain size adjustment aggregate pile inside the soft ground by using the grain size adjustment aggregate,
A sensor unit for measuring data obtained by the construction during the sea soft ground improvement construction in progress;
a communication unit for transmitting and receiving the data;
a control unit for storing and processing data received by the communication unit;
an input unit for inputting information necessary for the improvement of the offshore soft ground;
and a display unit (1) for displaying data measured by the sensor unit and transmitted by the communication unit by a real-time trajectory,
The sensor unit, an aggregate depth sensor 311 for measuring the depth of the particle size adjustment aggregate inside the ball-type casing pipe 130; Penetration depth sensor 313 for measuring the depth of the tip of the ball-type casing pipe 130; tank air pressure sensor; a casing air pressure measurement sensor 314 for measuring the air pressure inside the ball-type casing pipe 130; air nozzle air pressure sensor; A current measuring sensor for measuring the amount of current of the vibration hammer (110); Includes a bucket counter for measuring the number of times of input of the particle size adjustment aggregate put into the ball-type casing pipe 130 by the moving bucket 162,
The display unit 1, the bucket count display unit 10; Particle size adjustment aggregate level display unit 20; Grain size adjustment aggregate depth display unit 30; Casing tip depth display unit 40; air pressure display unit 50; Vibration hammer current display unit 60; Including the lowest depth of resistance display unit (70),
The bucket count display unit 10, the particle size adjustment aggregate level display unit 20, the grain size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the air pressure display unit 50 and the vibration hammer current display unit 60 are under construction The progress is displayed by the trajectory in real time,
In the display unit 1, the bucket count display unit 10, the particle size adjustment aggregate level display unit 20, the particle size adjustment aggregate depth display unit 30, the casing tip depth display unit 40, the air pressure display unit 50 and the vibration hammer The current display unit 60 is displayed in order, the bucket count display unit 10 is displayed at the top, and the vibration hammer current display unit 60 is displayed at the bottom,
In the bucket count display unit 10, the number of times of input of the particle size adjustment aggregate measured by the bucket counter is displayed as a real-time trajectory,
In the particle size adjustment aggregate level display unit 20, the height change of the top end of the particle size adjustment aggregate filled in the ball-type casing pipe 130 is displayed as a real-time trajectory,
In the particle size adjustment aggregate depth display unit 30, the depth of the uppermost portion of the particle size adjustment aggregate filled in the ball-type casing pipe 130 is displayed as a real-time trajectory,
In the casing tip depth display unit 40, the depth of the tip of the ball-type casing pipe 130 is displayed as a real-time trajectory,
The air pressure display unit 50, the tank air pressure display unit 51 for displaying the air pressure inside the high-pressure air storage tank in real-time as a trajectory; a casing air pressure display unit 52 for displaying the air pressure inside the ball-type casing pipe 130 as a real-time trajectory; and an air nozzle air pressure display unit 53 that displays the air pressure of the upper air nozzle 132b and/or the lower air nozzle 132c as a real-time trajectory,
The vibration hammer current display unit (60), characterized in that the amount of current supplied to the vibration hammer (110) is displayed as a real-time trajectory
Real-time data automatic recording system used in offshore soft ground improvement method. delete delete delete delete According to claim 1,
The display unit (1), characterized in that at least one of a computer monitor, CCTV, TV, smartphone, tablet PC, notebook, tabbook, PDA, printed matter
Real-time data automatic recording system used in marine soft ground improvement method. According to claim 1,
The display unit 1,
It is provided on the offshore work ship (A) that is in the process of improving the soft ground, or
It is provided in a place other than the maritime work vessel (A), or
Characterized in that it is provided in all places other than the offshore work ship (A) and the offshore work ship (A)
Real-time data automatic recording system used in marine soft ground improvement method. According to claim 1,
The communication unit, characterized in that for transmitting and receiving data by any one method of wired communication, wireless mobile communication, Wi-Fi, Bluetooth, Beacon, Zigbee
Real-time data automatic recording system used in marine soft ground improvement method. According to claim 1,
The control unit includes a data processing unit, characterized in that the data processing unit stores and processes data, or the data is stored in a cloud server through the communication unit
Real-time data automatic recording system used in marine soft ground improvement method. 10. The method according to any one of claims 1 and 6 to 9,
The bucket count display unit 10; Particle size adjustment aggregate level display unit 20; Grain size adjustment aggregate depth display unit 30; Casing tip depth display unit 40; air pressure display unit 50; Vibration hammer current display unit 60; In addition to the real-time trajectory, the lowest depth display unit 70 is also displayed as a real-time numerical value.
Real-time data automatic recording system used in marine soft ground improvement method. 10. The method according to any one of claims 1 and 6 to 9,
The bucket count display unit 10; Particle size adjustment aggregate level display unit 20; Grain size adjustment aggregate depth display unit 30; Casing tip depth display unit 40; air pressure display unit 50; Vibration hammer current display unit 60; Characterized in that the color of the lowest depth display unit 70 is displayed differently
Real-time data automatic recording system used in marine soft ground improvement method.

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