KR100423384B1 - Method for reinforcing ground strength for approach of equipments to the soft ground and apparatus thereof - Google Patents

Abstract

The present invention provides a method and apparatus for reinforcing ground strength for entering equipment into soft ground.

Ground strength reinforcement method for the equipment entry into the soft ground according to the present invention, the step of laying geotextiles for minimizing uneven settlement and reinforcement on the soft ground of the ground reinforcement target; Distributing sand by installing a belt conveyor on the geotextiles; Using a small drain type device to primary type the drain only in the upper layer of the soft ground on which the sand is installed; And after securing a proper support force, comprising the step of secondary type of drain for the ground treatment of the construction, the ground strength reinforcing device for entering the equipment into the soft ground according to the present invention, for transporting and laying sand Main belt conveyor; A sand injector for dispersing sand; A sand separator for separating the conveyed sand from the conveyor; A chute for uniformly discharging the separated sand downward; A horizontal belt conveyor for receiving sand from the rear belt conveyor and transferring the sand to the front belt conveyor; And a drain type device for type drain on the soft ground having sand.

Description

Ground strength reinforcement method and apparatus for entering equipment into soft ground {Method for reinforcing ground strength for approach of equipments to the soft ground and apparatus}

The present invention relates to a method for reinforcing ground strength and a device thereof for entering equipment into soft ground, and more particularly, when the ground is soft when the ground is soft, it is impossible to enter equipment required for ground treatment. ) It is used to secure the ground pressure by using a belt conveyor specially manufactured to minimize grounding pressure. The horizontal drainage layer sand to be used for future consolidation is homogeneously laid in advance, and the drain is typed only on the upper part of the soft soil layer using a small drain type device. The present invention relates to a method and apparatus for reinforcing ground strength for entering equipment into soft ground to reinforce ground strength.

In general, when the soft ground is improved by the dehydration method, the ground is improved by embedding the drain using large equipment of about 50 to 150 ton class, and the super soft ground, such as the area where the target ground is buried with seawater clay or seawater clay, In the case of the ground, it is impossible to enter the equipment, which requires precautions for entering the equipment.

As a precautionary measure for entering equipment, soil cover using wetland dozer and surface solidification treatment are currently used.

As shown in Fig. 1, the soil cover method using the wetland dozer covers the geotextile 101 on the top of the soft soil layer, and then repeats it several times about 50 cm at a time using the small wetland dozer 102 thereon. A method of laying soil by a predetermined thickness. However, in this method, the soil is deformed or the soft soil layer is pushed down by vibration of the dozer weight and frequent repeated driving as the soil is laid by repeatedly running the small doser 102 on the soft soil layer. Therefore, a small area of short-distance laying is possible, but in the case of laying a relatively long distance, as the jungle of the soft layer accumulates, the geosynthetic fiber 101 is often difficult to cover. In addition, even if the geosynthetic fiber 101 does not burst, the thickness of the cover layer is not uniformly installed, so that the subsequent drain type is difficult or the layer is weakened due to the delay in penetration, thereby increasing the risk of overturning the drain equipment. In addition, there is a problem that the use of a small dozer 102 with a small work capacity is inevitable, so the cost of laying soil is high.

Surface solidification treatment method is to increase the strength by injecting and mixing cement only in the upper part of the soft soil layer. First of all, the construction cost is high, and the soil characteristics between the solidified soil and the soft soil layer are different. The lower soft soil layer is often adversely affected.

The present invention was created in order to solve the above problems, using a belt conveyor specially manufactured to minimize ground pressure to homogeneously install the horizontal drainage layer sand to be used in the future consolidation in advance, and using a small drain type device It is an object of the present invention to provide a method and apparatus for reinforcing the ground strength for entering the equipment into the soft ground, which can minimize the deformation and the sliding phenomenon of the soft layer by reinforcing the ground strength by draining only the upper layer of the soft soil layer.

1 is a view showing a soil cover construction process using a conventional wetland dozer.

Figure 2 is a diagram showing the deformation of the ground or the crushing of the soft soil layer in the soil cover construction process using a conventional wetland dozer.

3 is a view schematically showing the configuration of the ground strength reinforcement device for entering the equipment into the soft ground according to the present invention.

Figure 4 is a view showing in detail the configuration of the sand injector in the ground strength reinforcement device for entering the equipment into the soft ground according to the present invention.

5 is a view showing the configuration of a winged rotating plate that can be employed in place of sand injector in the ground strength reinforcing device for entering the equipment into the soft ground according to the present invention.

Figure 6 is a ground strength reinforcing device for entering the equipment into the soft ground according to the present invention, showing the configuration of the sand separator and chute.

7 is a view showing a horizontal belt conveyor installed at the rear end of the front belt conveyor in the ground strength reinforcing device for entering the equipment into the soft ground according to the present invention.

8 is a view showing a process of forming a primary drain on the soft layer according to the ground strength reinforcement method for entering the equipment into the soft ground according to the present invention.

9 is a view showing a process of forming the present drain, after laying the loading layer on the sand layer according to the ground strength reinforcement method for entering the equipment into the soft ground according to the present invention.

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

301 ... main belt conveyor 301f ... front belt conveyor

301r ... rear belt conveyor 302 ... sandblaster

303 ... sand separator 304 ... chute

305 ... horizontal belt conveyor 306 ... drain type device

307f ... front hopper 307r ... rear hopper

308 Tire Drive 309 Post

310 ... rope

Ground strength reinforcement method for entering the equipment into the soft ground according to the present invention to achieve the above object,

(a) laying geotextiles on the soft ground of reinforcing ground to minimize uneven settlement and reinforce bearing capacity;

(b) dispersing and installing sand by installing a belt conveyor on the geotextiles;

(c) using a small drain type device to primary type the drain only in the upper layer of the soft ground having sand; And

(d) After securing the proper holding capacity, it is characterized in that it comprises the step of secondary type of drain for the ground treatment of the construction.

In this case, if only the primary drain type of the upper part of the soft ground in step (c) lacks the necessary supporting force required for entering the large equipment, or if it is necessary to secure a predetermined supporting force as soon as possible, a suitable loading soil is loaded on the installed sand layer. After that, the drain is typed on the loaded soil.

In addition, the ground strength reinforcing device for entering the equipment into the soft ground according to the present invention to achieve the above object,

A main belt conveyor installed in a wide endless track to minimize ground pressure on the geotextiles laid on the soft ground, and transporting and laying sand;

A sand injector installed at a distal end of the main belt conveyor to disperse and install sand;

A plurality of sand separators disposed on an upper surface of the main belt conveyor, for separating sand transferred by the main belt conveyor from the conveyor;

A plurality of chute is installed on the side portion of the conveyor of the site where the sand separator is installed, the chute for uniformly discharging the sand separated by the sand separator;

A horizontal belt conveyor installed at a rear end of the front belt conveyor of the main belt conveyor in a direction perpendicular to the installation direction of the front belt conveyor, for receiving sand from the rear belt conveyor of the main belt conveyor and transferring the sand to the front belt conveyor; And

It is characterized in that it is installed on one side of the main belt conveyor, and comprises a drain type device for type drain on the soft ground sand is installed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a view schematically showing the configuration of the ground strength reinforcing device for entering the equipment into the soft ground according to the present invention.

3, the ground strength reinforcement device for entering the equipment into the soft ground according to the present invention is the main belt conveyor 301, sand injection device 302, sand separation device 303, chute (304) ), A horizontal belt conveyor 305, and a drain type device 306.

The main belt conveyor 301 is installed in a wide endless track that can minimize the ground pressure on the geotextile 320 installed on the soft ground, and is for transporting and laying sand. This main belt conveyor 301 is comprised from the front belt conveyor 301f and the rear belt conveyor 301r.

In particular, the rear belt conveyor 301r is simply a device for transferring sand, and the rear end of the rear belt conveyor 301r so that the dump truck can directly inject sand into the rear hopper 307r at the rear of the rear belt conveyor 301r. The height of the lower than the height of the shear, the lower side height of one side of the rear hopper (307r), and the shock absorber is installed in the rear hopper (307r) to be in close contact with the dump truck. In FIG. 3, reference numeral 307f denotes a front hopper.

The sand blasting device 302 is provided at the front end of the front belt conveyor 301f of the main belt conveyor 301, and is a device for distributing sand. As shown in FIG. 4, the sand injector 302 distributes and discharges the air supplied from the air supply pipe 302a for supplying compressed air and the air supplied from the air supply pipe 302a through a plurality of discharge holes. The injection pipe 302b and the injection inclined plate 302c which maintain a predetermined angle of inclination so that sand can be evenly injected when sand is injected by the compressed air discharged through the air injection pipe 302b.

In this case, the sand blasting apparatus 302 may be replaced by a rotating plate 501 having a plurality of wings 501b, as shown in FIG. 5. That is, a winged rotating plate 501 is provided at the front end of the front belt conveyor 301f instead of the sand injector 302, and sand is released from the front end of the front belt conveyor 301f by the centrifugal force of the rotating plate 501. It's distributed. When the rotating plate 501 is installed, a separate motor is installed for driving the rotating plate 501.

The sand separator 303 is provided in plural on the upper surface of the front belt conveyor 301f of the main belt conveyor 301, and a certain portion of sand transferred by the front belt conveyor 301f from the conveyor 301f. It serves to separate. As shown in FIG. 6, the sand separator 303 includes a sand separator 303p for separating a part of sand that is loaded and transported on the conveyor 301f and a sand separator 303p of the conveyor. A sand separator supporting member 303s is fixed and supported so as to be horizontally movable in a direction perpendicular to the traveling direction.

As shown in FIG. 6, a plurality of chutes 304 are installed at a side portion of the conveyor 301f at a portion where the sand separator 303 is installed, and homogeneously separates sand separated by the sand separator 303. Discharge to the bottom.

As shown in FIG. 7, the horizontal belt conveyor 305 is installed at the rear end of the front belt conveyor 301f of the main belt conveyor 301 in a direction perpendicular to the installation direction of the front belt conveyor 301f, and the rear belt. The sand is supplied from the conveyor 301r and the sand is transferred to the front belt conveyor 301f. When the horizontal belt conveyor 305 is drain type by the drain type device 306 described later, the front belt conveyor 301f moves laterally, and the rear belt conveyor 301r cannot move together laterally. This is to prevent the interruption of the sand supply. That is, in the drain type, since the rear belt conveyor 301r stops at the seat, only the endless track travel of the belt conveyor is performed. Therefore, when the front belt conveyor 301f moves in the lateral direction and installs sand, the front belt conveyor 301r moves forward. There is a situation that sand transfer path between the belt conveyor 301f and the rear belt conveyor 301r is shifted and sand cannot be transferred from the rear belt conveyor 301r to the front belt conveyor 301f. 305 is installed. Thus, even if the front belt conveyor 301f moves in the lateral direction and installs sand, the sand conveyed from the rear belt conveyor 301r is dropped onto the horizontal belt conveyor 305, and the sand moves the front hopper 307f. It can be delivered to the front belt conveyor (301f) through.

The drain type device 306 is installed at one side of the rear belt conveyor 301r of the main belt conveyor 301 and types a drain for drainage on soft ground having sand. Here, the drain type device is preferably a hydraulic type device in order to minimize soft layer disturbances. And, in order to reduce the type energy, the casing end is preferably a shoe type casing.

Then, the process of reinforcing the soft ground using the apparatus of the present invention as described above will be described.

First, the geotextile 320 is laid on the soft ground of the ground reinforcement to minimize the differential settlement and reinforce the bearing capacity. Geosynthetic fiber 320 is sewn and laid so that an appropriate area can be secured at the site, and the material can be drained immediately from the top of the soft layer when the gap water pressure is generated due to the floor load, and the soft layer deformation and the jungle phenomenon are minimized. Use geotextiles with high permeability.

After laying the geotextiles 320, the apparatus of the present invention as described above is installed on the geotextiles 320, and sand is dispersed. At this time, the front belt conveyor (301f) is made to lengthen the length of the belt in order to maximize the sand transport distance using the belt as possible to minimize the deformation of the soft soil layer. Then, the front belt conveyor 301f travels with a wide endless track having a low ground pressure and a tire type driving body 308 freely changeable in accordance with the traveling direction therebetween. In addition, the end of the front belt conveyor (301f) is installed in a cantilever type, so that the equipment load does not directly contact the soft layer by a certain distance from the first sand discharge point, to prevent sagging of the belt conveyor (301f) by this A post 309 is provided near the front caterpillar track and is connected to the rope 310 from the end of the belt conveyor 301f.

After sand is laid on the geotextile, the sand is installed using a drain type device 306 installed together with the belt conveyor 301r or a separate small drain type device 801 as shown in FIG. 8. The drain 802 is primarily typed only in the upper layer portion of the soft ground. At this time, only the weak layer upper portion is a constant type of the drain 802 to a depth of about 3 ~ 4m.

In this way, after the drain type of the upper layer of the soft layer is left for a certain period of time and a predetermined supporting force is secured, the drain type for the ground treatment of the main construction is performed secondarily.

At this time, if only the primary drain type of the upper part of the soft ground is insufficient support capacity required to enter the large equipment, or if it is necessary to secure a predetermined support capacity as soon as possible, as shown in Figure 9, appropriate loading on the laid sand layer After loading, the secondary drain 803 is typed on the loading soil.

In the above series of processes, instead of laying sand using a belt conveyor, the same method may be used when using crushed aggregate or slag.

As described above, the ground strength reinforcing device and method for entering the equipment into the soft ground according to the present invention has the following advantages.

First, the belt conveyor end in the device of the present invention is a cantilever type, so that sand can be laid without a direct load on the soft layer by a certain distance, and sand is sprayed at the conveyor end, thus firing even in super soft ground. Homogeneous laying is possible while minimizing deformation and soft layer slipping.

Second, the homogeneous laying of sand as described above, it is possible to maintain a horizontal drainage layer, and because it is settled similarly to the adjacent soft layer, it is easy to drain the consolidation during consolidation, so the quality control of consolidation is easy.

Third, since the cover method does not use additional aggregates, but lays out horizontal drainage layers to be laid in advance, it is possible to cover the cost only by installing equipment without additional material costs, and since there is no additional cover, the drain type length is as short as the cover thickness. Drain type is easy, and workability is improved.

Fourth, if it is difficult to secure a predetermined support capacity only by laying the drainage layer, the soil to be loaded in the future is additionally laid on the drainage layer sand by a predetermined thickness, and according to the type of drainage, it is economical because it is possible to construct without spending additional cover work.

Claims (5)

(a) laying geotextiles on the soft ground of reinforcing ground to minimize uneven settlement and reinforce bearing capacity; (b) dispersing and installing sand by installing a belt conveyor on the geotextiles; (c) using a small drain type device to primary type the drain only in the upper layer of the soft ground having sand; And (d) a method of reinforcing the ground strength for entering the equipment into the soft ground, comprising the step of: secondly typeing the drain for the ground treatment of the construction after securing the proper supporting force. The method of claim 1, If only the primary drain type in the upper part of the soft ground in step (c) lacks the necessary supporting capacity for entering large equipment or if it is necessary to secure a predetermined supporting capacity as soon as possible, a suitable loading layer is loaded on the installed sand layer. After, the ground strength reinforcement method for entering the equipment into the soft ground, characterized in that it further comprises the step of forming a drain on the soil. A main belt conveyor installed in a wide endless track to minimize ground pressure on the geotextiles laid on the soft ground, and transporting and laying sand; A sand injector installed at a distal end of the main belt conveyor to disperse and install sand; A plurality of sand separators disposed on an upper surface of the main belt conveyor, for separating sand transferred by the main belt conveyor from the conveyor; A plurality of chute is installed on the side portion of the conveyor of the site where the sand separator is installed, the chute for uniformly discharging the sand separated by the sand separator; A horizontal belt conveyor installed at a rear end of the front belt conveyor of the main belt conveyor in a direction perpendicular to the installation direction of the front belt conveyor, for receiving sand from the rear belt conveyor of the main belt conveyor and transferring the sand to the front belt conveyor; And Ground strength reinforcement device for entering the equipment on the soft ground, characterized in that it is installed on one side of the main belt conveyor, comprising a drain type device for type drain on the soft ground with sand. The method of claim 3, The sand injector comprises sand by an air supply pipe for supplying compressed air, an air injection pipe for discharging and discharging air supplied from the air supply pipe through a plurality of discharge holes, and compressed air discharged through the air injection pipe. Ground strength reinforcing device for entering the equipment into the soft ground, characterized in that consisting of a sprayed inclined plate to maintain a predetermined angle of inclination so that sand can be evenly sprayed when sprayed. The method of claim 3, The sand injector is a ground strength reinforcement device for entering equipment into the soft ground, characterized in that the rotating plate with a plurality of wings.