KR102130105B1 - Method for reinforcing ground using large caliber excavating and mixing apparatus of non-displacement having auger - Google Patents

Abstract

It is possible to simplify the large-diameter excavation and stirring equipment for non-distribution by using auger to agitate the excavated soil within the excavation hole with a grout material, drawing a hollow rod immediately after excavation and agitation is completed, and inserting a reinforcing core. By reducing the hollow rod of the large-diameter excavation and agitation equipment, it is possible to reduce the amount of excavated soil during excavation and agitation of the large-diameter excavation and agitation equipment for non-distribution, and also by forming the auger blade to have a 180-degree rotary blade and an inclination of 45 degrees or more. It is possible to increase the stirring efficiency by minimizing the adhesion of the stirring soil, and also, by using an extended hollow rod connected to the hollow rod, can cope with various excavation hole lengths, and install a space for centering at the location of the connection point of the reinforcement core Thereby, a method of reinforcing the ground using a large-diameter excavation stirring equipment for non-earthing with an auger capable of responding to various excavation lengths by a space that serves as a connecting material is provided.

Description

METHOD FOR REINFORCING GROUND USING LARGE CALIBER EXCAVATING AND MIXING APPARATUS OF NON-DISPLACEMENT HAVING AUGER}

The present invention relates to a method of reinforcing the ground using a large-diameter excavation agitation equipment for non-earthing with an auger, and more specifically, when reinforcing a ground or slope such as a road or a railroad earthmoving road, reinforcing in an excavation hole without excavating the soil. Construction of an underground reinforcement using a core material and agitated excavated soil, but immediately after the excavation and agitation is completed, the hollow rod is drawn and the reinforcing core is reinserted. will be.

In Korea, more than 70% of the country's land is composed of mountainous regions, and railroad slopes are distributed nationwide, of which railroad slopes made in the past do not take into account the geological and geotechnical characteristics of the slopes, but only based on strength. Therefore, it is designed and constructed in a way that applies a standard slope. Therefore, most of the railroad slopes are still unstable. In addition, in Korea, about two-thirds of the annual average rainfall (1,000 mm to 1,283 mm) is in vulnerable natural conditions that are likely to cause slope collapse due to the climatic characteristics concentrated in summer, and due to recent global warming, local warming has caused it. The collapse of the railroad tracks or the Yanbian slopes caused by them has been highlighted as a big problem.

The railroad is not a transportation method that can be bypassed, unlike other transportation methods, so if a loss occurs, it takes a lot of money to recover, and urgent recovery is urgently required. In addition, due to the collapse or loss of tracks or its slopes due to heavy rains or local heavy rains, the cost of repairing them is increasing, the damages are also large, and maintenance is inevitable. In order to restore such a track, not only is the cost of the urgent repair method required to date, but also a lot of problems arise in terms of quality control and maintenance.

In addition, the railway roadbed has the function of supporting the track sufficiently firmly, providing adequate elasticity, preventing softening of the upper roadbed, and distributing and transmitting train loads to the road. The durability and bearing capacity of these railway roadbeds are deteriorated due to the elapse of the service life, repeated impact loads of trains, and rainwater intrusions, which may cause track misalignment due to sinking due to intrusion into the roadbed of the boxer, resulting in safety accidents. Can occur.

Therefore, in order to secure safety, speed, and accurate logistics and to ensure stability in train operation, it is required to establish active measures to strengthen the durability and support of the railway roadbed, and alternative aggregates due to the lack of natural aggregates by improving existing lines, constructing new and high-speed trains. In addition to securing roadbed materials that can be used as railroads, it is required to extend railroad maintenance cycles through the vitalization of tracks and to increase the efficiency of railroad construction and maintenance work by standardizing or optimizing design and construction.

On the other hand, in developed countries abroad, various methods such as the drainage method and the solidification method of the roadbed function reinforcement method have been developed and utilized as a roadbed and roadbed improvement method to increase the support capacity of conventional roadbeds. Because it is doing so, the situation continues to cause problems such as erection, settlement and deterioration of bearing capacity.

1 is a view showing a railway roadbed according to the prior art.

As shown in FIG. 1, in general, a roadway 31 and sleepers 32 are installed on the roadbed 10, so that the train 33 runs along the rail. Since the roadbed 10 is made of a slope 20 having a slope of 1.0:1.5 to 2.0 in order to secure a safety factor, as the height H of the track increases, it occupies a lot of land. That is, since the side of the roadbed 10 of the current railway and road forms an inclined plane 20 of 1.0:1.5 to 2.0 in order to ensure safety, the area of the site occupied by these slopes 20 is the height of the soil of the roadbed ( It becomes wider in proportion to H).

For example, the roadbed 10 may be formed to occupy 30 m of double track width L when the height H is 5 m, or 53 m of double track width L when the height H is 10 m. Can. In addition, in the case of constructing a railroad track, natural ground is often cut or a roadbed 10 is formed by embanking, and the slope is called a face of slope. If the angle of the slope 20 is large, there is a problem that it is easy to collapse in the rain.

On the other hand, in most areas where roads or roads that have been flatly constructed by cutting hills or riversides are cut, there are mostly cut slopes. Since these cut slopes are mainly formed by artificial cutting work, if the exposed slopes are left untouched, the risk of slope collapse is expected due to continuous weathering such as air contact and rainwater penetration. That is, when a large amount of rainwater penetrates due to a weak cohesive force of the slope, the slope may easily break and cause an avalanche.

To prevent the occurrence of landslides on the cut slopes, a wall that resists the soil pressure of the slopes, that is, a retaining wall is built on the periphery of the slopes, thereby preventing the loss of soil and preventing the landslides from occurring.

As a method of reinforcing slopes for such cut slopes, conventionally, on-site concrete retaining wall construction methods are mainly used, but in the case of such on-site concrete retaining wall construction methods, construction work efficiency is impaired because excessive work force and construction cost are required to install and dismantle the formwork. It had to be. At the same time, since the concrete retaining wall placed in the formwork had to be placed until the curing hardened completely, a problem that the construction period took a long time was accompanied. As one method for solving the problems of the concrete retaining wall construction method, a retaining wall construction method using a permanent anchor was introduced.

As a general ground reinforcement method, there are a pile method, a soil nailing method, and an earth anchor method. All of these methods are carried out in the process of performing excavation drilling using a hydraulic drill or various drilling puncturers, and inserting a grouting material after inserting piles, nails, steel wires, etc. into the drilling holes as a ground reinforcement. The ground reinforcement method has a disadvantage in that the construction period is delayed and a separate casing installation and removal operation is required because it consists of a process that is divided into a drilling and drilling operation and a ground reinforcement installation operation.

The excavation and drilling methods may be divided into a displacement method and a non-displacement method according to the treatment method of excavated soil. The excavating method is a method of excavating excavated soil, and the non-distributing method is a method of compacting the excavated soil without surrounding it, and although the excavating method is advantageous for the excavation effect, the non-distributing method is known to be advantageous for stabilization of the ground. So far, the method of excavation and non-distribution have been determined by the drilling rig used. In other words, the method of implementing a discharge using an excavation puncturer having a hollow hollow rod in which a screw wing is continuously formed, and also using an excavation puncturer having a non-hollowed hollow rod in which a screw blade is not continuously formed We are implementing a non-distributing method.

Figure 2 is a view for explaining that the settlement caused by perforation occurs during the anchor and nail nail reinforcement method according to the prior art.

In the general anchor and nail reinforcing method, settlement by puncture shown by reference numeral A in FIG. 2 a) may occur, as shown in FIG. 2 b). That is, the general reinforcement excavation excavates while installing an anchor or a nail nail, and there is a risk of collapsing the wall during excavation, and there is a risk of subsidence during excavation. In addition, there is a problem in that it takes a lot of time for the entire construction, and thus is unsuitable for reinforcement of a running route.

As a prior art for solving the above-mentioned problems, Korean Patent Publication No. 2018-56 discloses an invention entitled “Agitated perforating device having a wired support structure and a construction method therefor,” referring to FIGS. 3A to 3C. It will be described with reference.

3A to 3C are views showing excavation and stirring equipment according to the prior art, FIG. 3A is a perspective view, FIG. 3B is a side view, and FIG. 3C is a view showing a reinforcement core.

As shown in Figure 3a and 3b, the excavation stirring equipment according to the prior art, includes a hollow rod 51, a drill bit 52, a center holding blade 53 and a stirring blade 54, wherein , 3B, a cement milk outlet 52a is formed in the drill bit 52, a reinforcing core 60 is coupled to penetrate the hollow rod 51, and, in addition, the reinforcing core material 3C, as shown in FIG. 3C, includes an FRP pipe 61, a front end fastener 62, a front end cover 63, an edge pin 64, and a pin fastener 65.

Excavation and stirring equipment according to the prior art is a stirring blade (54) of the grouting material discharged through the disturbed excavated soil and cement milk outlet formed by rotating and excavating the ground by the front end fastener (62) and drill bit (52) of the reinforcing core. ) To agitate when advancing and reversing the hollow rod 51. Accordingly, it is possible to construct a ground reinforcement in which the reinforcing core 60 is left without excavating the excavated soil. In addition, in the case of the excavation stirring equipment according to the prior art, the excavation center is not shaken by the central holding blade 53 when excavating by the hollow rod 51, which is advantageous for construction and quality control. ) Can be separated from the hollow rod 51 inside the ground reinforcement by a simple blow, and the reinforcement core 51 is seated on the ground to construct a ground reinforcement such as a soil cement.

However, as shown in FIGS. 3A and 3B, since the drill bit 52 is formed in a streamlined shape, excavation efficiency is low, and it is difficult to cope with gravel or the like having large particles when the drill bit 52 is rotated. There is a problem. In addition, there is a problem that the stirring efficiency is low due to the shape of the stirring blade 54 that induces the movement of the excavated soil in one direction. In addition, as shown in Figure 3c, the connection and assembly of the reinforcing core 60 is complicated, there is a problem that the reinforcing core 60 may not be stably seated in the excavation hole.

On the other hand, the existing auger used in the excavation and stirring equipment for non-earthing according to the prior art has a low inclination angle, and thus, after excavation and agitation, a phenomenon in which the excavated agitation soil adheres to the auger blade is difficult to use for non-distribution, and excavation stirring efficiency It can decrease. In addition, in the case of the excavation and stirring equipment for non-distribution according to the prior art, even if a plurality of stirring blades are attached to the hollow rod, the synergistic effect of the stirring efficiency is negligible, and it is inefficient because it causes an overload on the hollow rod and the drive system. In the case of the method of mounting the reinforcement core inside the hollow rod to mount the reinforcement core within the excavation hole during the excavation stirring process, there is a great fear that the reinforcement core is not properly mounted and the diameter of the hollow rod must be largely formed. There is a disadvantage of increasing the amount of soil.

Republic of Korea Patent Publication No. 2018-56 (published date: January 2, 2018), the name of the invention: "Agitated perforation device having a streamlined support structure and a construction method therefor" Republic of Korea Patent Publication No. 2015-70807 (published date: June 25, 2015), the name of the invention: "auger tail and composite cross-section basic structure construction device including the same" Republic of Korea Registered Patent No. 10-1841250 (application date: February 2, 2017), the name of the invention: "Method of construction of non-clay file by soil gelation" Republic of Korea Patent No. 10-1560681 (application date: May 11, 2015), the name of the invention: "no vibration, noiseless, non-distributable structure support file and its construction method" Republic of Korea Patent No. 10-1510649 (application date: July 17, 2014), the name of the invention: "Excavation and stirring rod device for improving the soft ground" Japanese Patent Publication No. 2015-57528 (Publication date: March 26, 2015), Name of invention: "Excavation device of self-reinforcing type reinforcement"

The technical problem to be achieved by the present invention for solving the above-described problems is to use an auger to agitate the excavated soil with a grout material in the excavation hole, and immediately after the excavation and agitation is completed, pull out the hollow rod and reinsert the reinforcing core material. The present invention is to provide a method of reinforcing the ground using a large-diameter excavation agitation equipment for a non-earthing, which can simplify a large-diameter excavation agitation equipment for non-earthing.

Another technical problem to be achieved by the present invention is to reduce the amount of excavated soil during excavation and agitation of large-diameter excavation agitation equipment for non-distribution by slimming the hollow rod of the large-diameter excavation agitation equipment for non-discharge, large-diameter excavation for non-earthing with auger It is to provide a method for reinforcing the ground using agitation equipment.

Another technical problem to be achieved by the present invention, by forming the auger blade to have a 180-degree rotary blade and an inclination of 45 degrees or more, it is possible to minimize the adhesion of the agitated soil to the auger blade to increase the agitation efficiency, non-folding with auger It is to provide a ground reinforcement method using a large-diameter excavation and stirring equipment for soil.

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As another means for achieving the above-described technical problem, the ground reinforcement method using a large-diameter excavation agitation equipment for non-earthing with an auger according to the present invention includes a hollow rod, an auger drill bit, a subsequent augmented wing extension hollow rod and a reinforcement core In the ground reinforcement method using the large-diameter excavation and agitation equipment for non-earthing, comprising: a) initial setting of a large-diameter excavation and agitation equipment for non-earthing except for a reinforcing core on an excavation surface of a ground and selecting a drilling position; b) forward rotation of the hollow rod of the large-diameter excavation stirring device for non-distribution using a rotating device; c) first agitating the grouting material and the excavated soil by a subsequent stirring wing until the auger drill bit reaches the excavation depth; d) when the excavation depth is reached, reversely reversing the hollow rod, and secondly stirring the grouting material and the excavated soil by the subsequent stirring blades; e) after drawing the hollow rod, before the grouting material and the excavated soil are hardened, reinforcing a reinforcement core to an excavation depth; And f) fixing the rear end of the reinforcing core to the excavation surface fixing plate, and finally curing the agitated grouting material to complete an underground reinforcement, in step e) the reinforcing core and the reinforcing core are excavated and Immediately after the stirring is completed, it is inserted afterwards to smoothly settle and maintain the center in the reinforcement and minimize the volume of the hollow rod.
The auger drill bit of step c) is composed of an auger blade and an auger tip, and is mounted on the outer circumferential surface of the front end of the hollow rod, and the auger blade is rotated by 180 degrees and 45 degrees or more to minimize adhesion of agitated excavated soil. It is formed to have an inclination, and the reinforcement core of step e) is composed of a reinforcement core body, a reinforcement core head, and a spacer, and the spacer is inserted into the excavation surface of the excavation hole to prevent left and right tilting when the reinforcement core is inserted. Maintaining the center, it is characterized by paralleling the role of connecting material.

According to the present invention, it is possible to simplify the large-diameter excavation and stirring equipment for non-distribution by using an auger to agitate the excavated soil in the excavation hole with the grout material, drawing a hollow rod immediately after the excavation and agitation is completed, and reinserting the reinforcing core. .

According to the present invention, by diluting the hollow rod of the large-diameter excavation stirring device for non-distribution, it is possible to reduce the amount of excavation soil during excavation and stirring of the large-diameter excavation stirring device for non-distribution.

According to the present invention, by forming the auger blade to have a 180-degree rotary blade and an inclination of 45 degrees or more, the agitation efficiency can be increased by minimizing the agitation soil sticking to the auger blade.

According to the present invention, it is possible to correspond to various excavator lengths by using an extended hollow rod connected to the hollow rod.

According to the present invention, it is possible to cope with various excavation hole lengths by providing a space for a central holding by providing a center holding space at the location of the connection point of the reinforcing core.

1 is a view showing a railway roadbed according to the prior art.
Figure 2 is a view for explaining that the settlement caused by perforation occurs during the anchor and nail nail reinforcement method according to the prior art.
3A to 3C are views showing excavation and stirring equipment, which are agitation drilling devices having streamlined support structures according to the prior art, respectively.
4 is a view schematically showing a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention.
5 is a view showing a specific shape of the auger drill bit in a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention.
6 is a view showing a specific shape of a subsequent stirring blade in a large-diameter excavation stirring equipment for non-earthing with auger according to an embodiment of the present invention.
7 is a view showing a specific shape of the grouting material discharge port in a large-diameter excavation and stirring equipment for non-distribution with auger according to an embodiment of the present invention
8 is a view showing the shape of an extended hollow rod in a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention.
9 is a view showing a specific shape of the reinforcing core in the large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention.
10 is a view showing a specific shape of the reinforcing core head in a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention.
11 is a view showing a specific shape of a spacer in a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention.
12 is an operation flow chart of a ground reinforcement method using a large-diameter excavation stirring equipment for non-earthing with auger according to an embodiment of the present invention.
13A to 13D are views for specifically explaining a large-diameter excavation and stirring method for non-earthing with auger according to an embodiment of the present invention.
14A to 14C are diagrams illustrating that a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention is applied, respectively.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and like reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated.

[Large caliber excavation stirring equipment for non-earthing with auger (100)]

4 is a view schematically showing a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention.

Referring to Figure 4, the large-diameter excavation and stirring equipment 100 for a non-distribution with auger according to an embodiment of the present invention, hollow rod 110, auger drill bit 120, subsequent stirring wing 130 and reinforcement core It includes 150, the reinforcing core 150 is composed of a reinforcing core body portion 151, reinforcing core head 152 and spacer 153. In addition, as shown in FIG. 8 to be described later, the hollow rod 110 may further include an extended hollow rod 140 extending rearward.

The hollow rod 110 is formed of a pipe-shaped steel pipe, and inside thereof, a hollow portion to which a grouting material is supplied is continuously formed in the longitudinal direction. The auger drill bit 120 is mounted on the outer circumferential surface of the front end of the hollow rod 110, and a subsequent stirring wing 130 is mounted on the rear circumferential surface of the hollow rod 110.

The hollow portion of the hollow rod 110 is a grouting material injection pipe is formed in the longitudinal direction therein, a grouting material discharge port 112 is formed at the tip end communicating with the grouting material injection pipe, as shown in Figure 7 to be described later Likewise, the grouting material 160 may be discharged from the tip of the hollow rod 110 to the outside.

Auger drill bit 120 is made of auger blade 121 and auger tip 122, as shown in FIG. 5 to be described later, and minimizes adhesion of the excavated soil to the auger blade 121 during excavation and stirring By reducing the amount of soil during construction, at this time, the auger tip 121 on which the auger tip 122 is formed has a rotary blade rotating 180 degrees and an inclination of 45 degrees or more, and the hollow rod 110 It is formed integrally with the tip and is advantageous for excavation while crushing large particles. That is, the auger drill bit 120 having a rotary blade rotating 180 degrees, an auger blade 121 having an inclination of 45 degrees or more, and an auger tip 122 formed at the tip portion, when the excavated soil is excavated and stirred, auger blade ( 121) to minimize adhesion to the soil during construction.

Subsequent stirring wings 130 are formed of two streamlined wings on the outer circumferential surface of the hollow rod 110 behind the auger drill bit 120, and grouting material in the excavation and drawing process (forward and reverse) of the hollow rod 110 After 160 is discharged to the disturbed ground serves to stir each other.

The reinforcing core 150 is composed of a reinforcing core body 151, a reinforcing core head 152, and a spacer 153. After excavation and stirring, the hollow rod 110 is drawn, and then the excavated soil 200b And before the grouting material 160 is mixed and stirred and cured, it is introduced to the excavation depth. At this time, the reinforcing core 150 equipped with the spacer 153, after excavation and agitation, is inserted into the excavation depth while maintaining the center using a reinforcing core inserting device (not shown) to smoothly fix the end and maintain the center. You can do it.

Accordingly, the large-diameter excavation agitation equipment 100 for non-distribution with auger according to an embodiment of the present invention does not distribute excavation soil in an excavation hole using an auger drill bit rotating 180 degrees, and simultaneously drills the ground After homogeneous stirring with the grouting material 160, the ground can be reinforced by advancing the reinforcing core 150, which is a tensile ground reinforcement, to an excavation depth.

In the case of the large-diameter excavation and stirring equipment 100 for non-distribution with an auger according to an embodiment of the present invention, the vertical and horizontal reinforcing materials are constructed by agitating with the grouting material in the excavation hole without discharging the excavated soil, but excavating and stirring efficiency It is made to increase as much as possible. For example, the auger drill bit 120 increases excavation efficiency when excavating, and increases agitation efficiency by inducing smooth movement of excavated soil. Subsequent stirring blades 130 installed at the rear of the auger drill bit 120 have two streamlined blade shapes, so that the stirring quality can be improved. In addition, the shape and connection method of the reinforcing core head 152 can easily fix the reinforcing core 150 in the excavation hole during excavation and stirring.

On the other hand, Figure 5 is a view showing a specific shape of the auger drill bit in a large-diameter excavation stirring equipment for non-distribution with auger according to an embodiment of the present invention.

As shown in FIG. 5, in the large-diameter excavation and stirring equipment 100 for non-earthing with an auger according to an embodiment of the present invention, the auger drill bit 120 includes an auger blade 121 and an auger tip 122 In addition, the auger blade 121 is formed to have a 180-degree rotary blade and an inclination of 45 degrees or more, thereby improving excavation efficiency by minimizing adhesion of agitated excavated soil to the auger blade 121. In addition, the auger tip 122 may excavate and reinforce the soil under various conditions, such as a ground in which a large number of particles and gravel and amber are distributed.

On the other hand, Figure 6 is a view showing a specific shape of the subsequent stirring blades in a large-diameter excavation stirring equipment for non-earthing with auger according to an embodiment of the present invention.

In the large-diameter excavation and stirring equipment 100 for a non-distribution with auger according to an embodiment of the present invention, the subsequent stirring wing 130, as shown in FIG. 6, is configured to form a streamlined wing in a two-blade form for subsequent stirring. Torque applied to the hollow rod 110 and the drive system (not shown) can be reduced. Here, the drive system serves to drive the hollow rod 110 forward or backward by driving forward or reverse.

Specifically, the two streamlined wings of the subsequent stirring blades 130 are formed on the outer circumferential surface of the hollow rod 110 as a shape having an inclination in the same direction during agitation of the excavated soil, and are excavated when the hollow rod 110 is advanced It sends the soil 200b to the rear, and serves to send the excavated soil 200b to the front when the hollow rod 110 is reversed.

On the other hand, Figure 7 is a view showing the specific shape of the discharge port of the grout material in a large-diameter excavation and stirring equipment for a non-distribution with auger according to an embodiment of the present invention, a) of Figure 7 is a plan view, Figure 7 b) is a longitudinal section It is.

Grout material discharge port 112 in the large-diameter excavation and stirring equipment 100 for a non-distribution with auger according to an embodiment of the present invention, as shown in a) and b) of Figure 7, hollow rod body portion 111 It is formed in an inclined form from the inside to the outside to minimize the phenomenon that the grouting material discharge port 112 is blocked by the excavation soil 200b during the excavation and stirring operations. That is, when the grout material discharge port 112 is formed in the vertical direction, it can minimize what can be blocked by the excavated soil (200b).

On the other hand, Figure 8 is a view showing the shape of an extended hollow rod in a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention.

The extended hollow rod 140 in the large-diameter excavation stirring equipment for non-earthing with auger according to an embodiment of the present invention includes an extended hollow rod body portion 141, a first fastening portion 142, and a second connecting portion 143 do.

At this time, the auger drill bit 120 is a hollow rod 110 mounted on the front end to a length of about 3m, and then, the extended hollow rod 140 connected to the first connecting member 113 of the hollow rod 110 ) To excavate and agitate to various depths. At this time, the extended hollow rod 140 may be formed to have a length of about 3m or so to reduce the working radius and the size of equipment.

Specifically, the first fastening part 142 is fastened to the first connection part 113 formed at the rear of the hollow rod 110 so as to be excavated and stirred to various depths, and the second connection part 143 extends differently. The hollow rod 110 can be extended by being engaged with the fastening portion of the hollow rod 140. For example, the extended hollow rod 140 may be extended by being connected to the hollow rod 110 in various connection types such as pin connection and screw connection.

On the other hand, in the case of a large-diameter excavation and stirring equipment 100 for non-earthing with an auger according to an embodiment of the present invention, the reinforcing core 150 is post-inserted, and the excavation and stirring are completed immediately after the reinforcing core 150 is post-inserted. By doing so, it is possible to smoothly set and maintain the core of the reinforcing core 150 in the reinforcing material and minimize the volume of the hollow rod. Here, the reinforcing material is a soil formed by mixing and stirring the excavation soil 200b and the grouting material 160, for example, may be a soil cement.

9 is a view showing a specific shape of the reinforcement core in a large diameter excavation stirring equipment for a non-earthing with auger according to an embodiment of the present invention, Figure 10 is a large diameter excavation stirring for a non-earthing with auger according to an embodiment of the present invention As a drawing showing a specific shape of the reinforcing core head in the equipment, a) in FIG. 10 is a front view, b) in FIG. 10 is a side view, and FIG. 11 is a large-diameter excavation agitation for non-earthing with an auger according to an embodiment of the present invention As a diagram showing a specific shape of the spacer in the equipment, a) in FIG. 11 is a front view, and b) in FIG. 11 is a side view.

Reinforcing core 150 in a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention, as shown in Figure 9, the reinforcement core body portion 151, reinforcement core head 152 and spacer ( 153), wherein the spacer 153 serves as a connecting material in addition to the role of maintaining the center during post-insertion.

That is, the reinforcing core head 152 is mounted at the tip of the reinforcing core body portion 151, and the reinforcing core body portion 151 can be extended by a spacer 153 serving as a connecting material. For example, by connecting the reinforcement core 150 having a length of about 3m, it can correspond to various depths.

In addition, in the large-diameter excavation and stirring equipment 100 for non-earthing with auger according to an embodiment of the present invention, the reinforcing core head 152 of the reinforcing core 150 is shown in a) and b) of FIG. As described above, the insertion of the reinforcing core material 150 to the tip of the excavator smoothly in the shape of an arrowhead.

In addition, in the large-diameter excavation and stirring equipment 100 for non-earthing with auger according to an embodiment of the present invention, the spacer 153 of the reinforcing core 150 is as shown in a) and b) of FIG. , Reinforcing core 150 in the form of three to four blades serves to maintain the center in the reinforcing material, and, further, the spacer 153, as shown by reference numeral A, the excavation surface of the excavation hole By setting the length to be about 1 ~ 2㎝ in, by inserting the reinforcing core 150 can be prevented so that there is no left and right tilting of the spacer 153.

In addition, the spacer 153 acts as a connecting member of the reinforcing core 150 by forming a fastening portion and a connecting portion of the spacer 153 and the reinforcing core 150 to enable various connection types such as pin connection and screw connection. can do.

After all, according to the large-diameter excavation and stirring equipment 100 for non-earthing with auger according to an embodiment of the present invention, an auger is used to agitate the excavated soil with a grout material in the excavation hole, and the hollow rod is immediately after the excavation and stirring are completed. By drawing and reinserting the reinforcing core, it is possible to simplify the large-diameter excavation and stirring equipment for non-earthing. In addition, by reducing the hollow rod of the large-diameter excavation stirring device for non-distribution, it is possible to reduce the amount of excavation soil during excavation and agitation of the large-diameter excavation stirring device for non-distribution. Also, the auger blade has a 180-degree rotary blade and an inclination of 45 degrees or more. By forming, it is possible to increase stirring efficiency by minimizing adhesion of the stirring soil to the auger blade. In addition, by using an extended hollow rod connected to the hollow rod, it is possible to cope with various excavator lengths, and by installing a space for centering at the location of the reinforcing core connection point, it is possible to cope with various excavator lengths by a space that acts as a connecting material. have.

[Soil Reinforcement Method Using Large-diameter Excavation Stirring Equipment for Non-Graining with Auger]

12 is an operation flow chart of a ground reinforcement method using a large-diameter excavation stirring equipment for non-earthing with auger according to an embodiment of the present invention, and FIGS. 13A to 13D are respectively for non-earthing with auger according to an embodiment of the present invention This is a view to explain in detail the method of reinforcing the ground using large-diameter excavation and stirring equipment.

12, 13A to 13D, a ground reinforcement method using a large-diameter excavation and stirring equipment for non-earthing with auger according to an embodiment of the present invention, hollow rod 110, auger drill bit 120, subsequent As a ground reinforcing method using a large-diameter excavation and stirring equipment 100 for non-earthing consisting of a stirring blade 130, an extended hollow rod 140, and a reinforcing core 150, first, a hollow rod 110, auger drill bit 120 , Large diameter excavation stirring equipment (100) for non-distribution excluding the reinforcement core (150) from the large-diameter excavation stirring equipment (100) for non-distribution consisting of a subsequent stirring wing (130), an extended hollow rod (140) and a reinforcement core (150), As shown in Figure 13a, the initial setting on the excavation surface (200a) of the ground (200), and select a drilling position (S110).

Next, the hollow rod 110 of the large-diameter excavation and stirring equipment 100 for non-distribution is forwardly rotated using a rotating device (not shown) (S120). At this time, a grouting material injection pipe is formed in the longitudinal direction around the hollow portion of the hollow rod 110, and a grouting discharge port is formed at a front end portion communicating with the grouting material injection pipe so that the grouting material 160 is the hollow rod. It is discharged from the leading end of (110) to the outside. At this time, the grouting material discharge port 112 is preferably to have a predetermined inclination from the inside of the hollow rod 110 to reduce the clogging phenomenon by the excavation soil (200b) during the excavation and stirring operation.

Next, the auger drill bit 120, as shown in Figure 13b, the primary stirring of the grouting material 160 and the excavated soil 200b by the subsequent stirring wing 130 until it reaches the excavation depth (S130). At this time, the auger drill bit 120 is made of auger blade 121 and auger tip 122, is mounted on the outer circumferential surface of the front end of the hollow rod 110, the auger blade 121 is agitated excavated soil ( 200b) is preferably formed to have a 180-degree rotating blade and an inclination of 45 degrees or more to minimize adhesion.

Next, when the excavation depth is reached, the hollow rod 110 is reversed and reversed, and as shown in FIG. 13C, the grouting material 160 and the excavation soil 200b are secondary by the subsequent stirring wing 130. It is stirred (S140). At this time, the subsequent stirring blade 130 is configured in the form of a streamlined two-blade having the same inclination during stirring to reduce the torque applied to the hollow rod 110 and the drive system during subsequent stirring, and the hollow rod 110 When advancing, the excavated soil is sent to the rear, and when the hollow rod 110 is retracted, the excavated soil is sent to the front.

Next, after the hollow rod 110 is withdrawn, the grouting material and the excavated soil are reinforcing the reinforcement core 150 to the excavation depth (S150). That is, the reinforcing core material 150 is inserted into the excavation depth immediately after excavation and agitation are completed, and is inserted. Here, the reinforcing core material 150 is composed of a reinforcing core body portion 151, a reinforcing core head 152, and a spacer 153, and the spacer 153 tilts left and right when the reinforcing core 150 is inserted. In order to prevent it, it is inserted into the depth of 1 to 2 cm from the excavation surface of the excavation hole to maintain the center and acts as a connecting material. In other words, the reinforcing core 150 may be inserted after the reinforcing core 150 is excavated and agitated to smoothly settle and maintain the core in the reinforcing material and minimize the volume of the hollow rod 110.

Next, as shown in FIG. 13D, the rear end of the reinforcing core is fixed to the fixing plate of the excavation surface 200a, and the stirred grouting material is finally cured to complete an underground reinforcement (S160).

Meanwhile, FIGS. 14A to 14C are diagrams illustrating that a large-diameter excavation and stirring equipment for non-earthing having an auger according to an embodiment of the present invention is applied, respectively.

A large-diameter excavation stirring method for non-distribution with auger according to an embodiment of the present invention, as shown in FIGS. 14A to 14C, for example, a section requiring strict deformation and settlement management during excavation such as a running railway or road It can be applied to, and reinforcement construction through such excavation and agitation can be utilized in various construction methods.

According to an embodiment of the present invention, it can be easily applied to a construction section that needs to minimize ground subsidence during excavation and reinforcement, and it is possible to minimize the influence on adjacent structures during excavation and agitation. In addition, according to an embodiment of the present invention, it is possible to excavate and reinforce soils of various conditions such as soils in which large grains of gravel and amber are distributed, and it can be used for recovery and restoration of a section where roadbed settlement has occurred.

The above description of the present invention is for illustration only, and a person having ordinary knowledge in the technical field to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and it should be interpreted that all changes or modified forms derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention. do.

100: large-diameter excavation stirring equipment for non-earthing
110: hollow rod 120: auger drill bit
130: subsequent stirring wing 140: extended hollow rod
150: reinforcing core 160: grouting material (cement milk)
111: hollow rod body portion 112: grouting material outlet
113: 1st connection part 121: Auger blade
122: Auger tip 141: Extension hollow rod body
142: first connection portion 143: second connection portion
151: reinforcement core body portion 152: reinforcement core head
153: spacer
200: ground 200a: excavation surface
200b: excavated soil

Claims (15)

delete delete delete delete delete delete delete delete delete In the ground reinforcement method using a large-diameter excavation and stirring equipment 100 for non-distribution consisting of a hollow rod 110, an auger drill bit 120, a subsequent stirring wing 130, an extended hollow rod 140, and a reinforcing core 150 ,
a) initially setting a large-diameter excavation and stirring equipment 100 for non-raising except the reinforcing core 150 on the excavation surface 200a of the ground 200 and selecting a drilling position;
b) forward rotation of the hollow rod 110 of the large-diameter excavation and stirring equipment 100 for non-distribution using a rotating device;
c) first agitating the grouting material 160 and the excavation soil 200b by a subsequent stirring wing 130 until the auger drill bit 120 reaches the excavation depth;
d) when the excavation depth is reached, the reverse rotation of the hollow rod 110 is reversed, and the second stirring of the grouting material 160 and the excavation soil 200b by the subsequent stirring blades 130;
e) after drawing the hollow rod 110, advancing the reinforcement core 150 to an excavation depth before the grouting material 160 and the excavation soil 200b are cured; And
f) fixing the rear end of the reinforcing core to the fixing plate of the excavation surface 200a, and finally curing the stirred grouting material to complete an underground reinforcement,
In step e), the reinforcing core 150 is reinserted immediately after the excavation and agitation is completed, thereby smoothly fixing and maintaining the core in the reinforcing material and minimizing the volume of the hollow rod 110,
The auger drill bit 120 of step c) is composed of an auger blade 121 and an auger tip 122, mounted on the outer circumferential surface of the front end of the hollow rod 110, and the auger blade 121 is agitated excavation The soil 200b is formed to have a 180-degree rotary blade and a 45-degree or higher slope to minimize adhesion.
The reinforcing core 150 in step e) is composed of a reinforcing core body 151, a reinforcing core head 152, and a spacer 153, and the spacer 153 is left and right when the reinforcement core 150 is inserted. A method of reinforcing the ground using a large-diameter excavation agitation equipment for non-distribution with auger, characterized in that it acts as a connecting material while maintaining the center by being adjacent to the excavation surface of the excavation hole to prevent the tipping. The method of claim 10,
A grouting material injection pipe is formed in the lengthwise direction around the hollow portion of the hollow rod 110 in step b), and a grouting discharge port is formed at a front end portion communicating with the grouting material injection pipe to form the grouting material 160. Ground reinforcement method using a large-diameter excavation agitation equipment for non-earthing with an auger characterized in that it is discharged from the front end of the hollow rod (110). The method of claim 11,
The grouting material discharge port 112 has an auger characterized by having a predetermined inclination from the inside of the hollow rod 110 to the outside to reduce the clogging phenomenon caused by the excavation soil 200b during excavation and stirring operations A method of reinforcing the ground using a large-diameter excavation and stirring equipment for non-clay delete The method of claim 10,
The subsequent stirring wing 130 is configured in the form of a streamlined two-blade having the same inclination during stirring to reduce torque applied to the hollow rod 110 and the drive system during subsequent stirring, and when the hollow rod 110 is advanced A method of reinforcing the ground using a large-diameter excavation agitation equipment for non-distribution with auger characterized in that the excavated soil is discharged to the rear and the excavated soil is forwarded when the hollow rod 110 is reversed. delete

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