KR20160042510A - Apparatus and method for excavating deep well - Google Patents

Abstract

The present invention relates to a deep well excavation apparatus and a deep well excavation method. The deep well excavation apparatus includes: a cylindrical well which is empty; a support plate which is pressurized and supported on an inner diameter of an end part of the well; an upper support part to support an outer diameter of the well on the ground; a water supply part to supply water into the well; a bit module which is rotatably supported on the support plate by being extended through a center of the support plate, and has an excavation head excavating the land; a water spraying part to spray water in the well to an excavation surface through the bit module; a protruded bit which is installed at the bit module, and can move between a protrusion position protruded in a circumferential direction rather than a side end part of the excavation head and an accommodation position in the side end part of the excavation head; a sludge exhaust path which is extended through the support plate to exhaust an excavation sludge; and a sludge exhaust pump to provide an exhaust pressure to exhaust the excavation sludge while being installed closely to the support plate. According to the configuration, the present invention can provide the deep well excavation apparatus and the deep well excavation method wherein an excavation driving part can bury a facility capable of performing stable power delivery and storing water closely to the excavation surface at the same time as the excavation, while preventing collapse of an inner wall of an excavation hole.

Description

Technical Field [0001] The present invention relates to an excavation apparatus and a method for excavating deep well,

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a large diameter well excavation apparatus and a large diameter excavation method.

Conventionally, the vertical shaft has been excavated in order to develop mines. Recently, the construction of tunnels due to the expansion of railway and road facilities has been rapidly increasing, and construction has been increasing for the purpose of working gang and ventilation.

As disclosed in Korean Utility Model Registration No. 20-0337286, in a conventional drilling apparatus according to the prior art, a drilling drive unit for providing a drilling power is installed at a high place on the ground, so that the center of gravity is located at an upper portion, There was a difficult problem. Further, since the power transmission rod must be used to transmit the excavating power provided by the excavation drive unit to a drill or a cutter, there is a problem that the load is deformed.

Further, when the drilling depth is deepened at the time of excavation of the large diameter shaft, there is a problem that the inner wall of the excavation gang may be collapsed due to vibration generated at the time of excavation.

Further, in the case of installing a double hole while performing excavation in order to prevent collapse of the inner wall of the excavation gang, the cross section of the excavation gang becomes narrow and it is difficult to pull the drill or the cutter of the mechanization apparatus through the excavation gang after the excavation is completed .

On the other hand, the present applicant has proposed a seawater desalination facility by reverse osmosis membrane method in Patent Application No. 10-2014-0122589. Such a seawater desalination plant excavates a well capable of storing water over 300m underground, and installs a filtration membrane at the lower end of the well to remove salt in seawater by reverse osmosis pressure by natural water pressure.

It is difficult to install a facility that can confine water in such a vertical shaft, and thus it is difficult to apply it to a large-scale well for a desalination plant for seawater.

Korea Utility Model Registration No. 20-0337286

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a hydraulic excavator that can prevent the collapse of the inner wall of an excavation gauge, And a method of excavating a well of a large diameter well.

According to an aspect of the present invention, there is provided an apparatus for drilling a deep well, comprising: a hollow hollow cylindrical water tank; A support plate pushed and supported by an inner diameter of an end portion of the water reservoir; An upper support for supporting an outer diameter of the water reservoir on the ground; A water supply part for supplying water to the inside of the water reservoir; A bit module extending through the center of the support plate and rotatably supported on the support plate, the bit module having an excavating head for excavating the ground; A water spraying unit for spraying water in the water reservoir through the bit module to the excavation surface; A protruding bit mounted on the bit module and movable between a protruding position protruding in a circumferential direction than a side end of the drilling head and a storing position within a side end of the drilling head; A sludge discharge passage extending through said support plate for discharging excavated sludge; A sludge discharge pump installed adjacent to said support plate and providing a discharge pressure for discharging excavated sludge; .

A support ring fitted to the outer diameter of the end of the water reservoir to increase the rigidity of the reservoir to which the support plate is supported; .

A shield ring provided adjacent to an end of the water reservoir to prevent drainage of digging sludge to the outside of the water reservoir; .

Also, a water depth for storing water by a predetermined depth on the ground; And the water reservoir can extend underground through the center of the water channel, and the water supply unit supplies water stored in the water channel to the well reservoir.

Also, a rail installed along the upper part of the waterpath; A support carriage installed movably along the rail; An excavation equipment elevator supported by the support truck to elevate the support unit and the bit module; .

According to an aspect of the present invention, there is provided a method for excavating a large diameter well, comprising: forming a channel for storing water by extending a predetermined depth from the ground; Positioning a first cylindrical water hole in the center of the waterway; Positioning a bit module having a support plate which is press-supported on the inner diameter of the end of the first right reservoir and an excavating head which extends through the center of the support plate and is rotatably supported by the support plate and excavates the ground; Positioning a protruding bit mounted on the bit module so as to protrude in a circumferential direction from a side end portion of the drilling head; Injecting the water of the channel into the first wellbore and injecting the water through the bit module onto the excavation surface; Drilling the ground while rotating the bit module and the protruding bit; Discharging excavated sludge to the ground through a sludge discharge passage extending through the support plate; Placing the second well in the ground above the first well and bonding the first well to the second well in the ground as the first well is advanced and buried underground by excavation; .

In addition, a step of sandwiching the support ring on the outer diameter of the end of the water reservoir to increase the rigidity of the reservoir to which the support plate is supported; .

According to the present invention, it is possible to provide a large-diameter well digging device capable of stable power transmission adjacent to the excavation surface while preventing collapse of the inner wall of the excavation gantry, And a method of excavating a deep well.

1 is a view showing a configuration of a drilling rig according to an embodiment of the present invention.
Fig. 2 is a view showing in detail the main configuration of the excavation driving unit adjacent to the excavation surface in Fig. 1;
FIGS. 3A and 3B are views for explaining the movement of the protruding bit in the excavation driving unit of FIG. 2. FIG.
4 is a view for explaining a configuration of a water reservoir according to an embodiment of the present invention.
FIG. 5A and FIG. 5B are views showing a connection process of the water tank in the apparatus for drilling a large diameter well in FIG. 1;
6A to 6E are views sequentially illustrating a method of excavating a large diameter well according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements throughout. The same reference numerals in the drawings denote like elements throughout the drawings.

Seawater desalination is the process of obtaining fresh water by removing various impurities and salts from seawater containing salinity. The reverse osmosis membrane method of seawater desalination method applies pressure higher than osmotic pressure to seawater and water is purified through reverse osmosis membrane. It is a method of isolating salt from seawater by allowing it to pass without being concentrated.

In order to obtain the desired reverse osmotic pressure by using this reverse osmosis membrane method, it is necessary to excavate a large-diameter deep well of 300 m or more in the ground to obtain a desired reverse osmosis pressure, and to obtain reverse osmosis by filling the sea water in the well with natural water pressure .

The present invention proposes an apparatus and method for excavating large diameter deep wells. Although the present invention is primarily used for excavating large diameter wells for seawater desalination, it is not limited to such use and can be used without limitation for forming large diameter wells.

1 is a view showing a configuration of a drilling rig according to an embodiment of the present invention. Fig. 2 is a view showing in detail the main configuration of the excavation driving unit adjacent to the excavation surface in Fig. 1; FIGS. 3A and 3B are views for explaining the movement of the protruding bit in the excavation driving unit of FIG. 2. FIG. 4 is a view for explaining a configuration of a water reservoir according to an embodiment of the present invention. FIG. 5A and FIG. 5B are views showing a connection process of the water tank in the apparatus for drilling a large diameter well in FIG. 1;

The excavation equipment elevator 125, the rainwater can 140, the support plate 150, and the support plate 150. The excavation equipment elevator 125, the rainwater excavator, A top support 124, a water supply 130, a bit module 160, a drive motor 155, a protrusion bit 170, a sludge discharge passage 180, a sludge discharge pump 185, and the like.

The frequency channel 110 extends underground by a predetermined depth from the ground so as to store water. The rainfall channel 110 can be extended to several tens of meters (m) along the ground so as to excavate the large-angle wells at regular intervals. The frequency channel 110 may be made of, for example, concrete.

The rail 111 is installed along the upper part of the waterway 110 and the support truck 120 is installed to be movable along the rail 111.

The excavation equipment elevator 125 is supported by the support truck 120 to elevate the excavation drive unit (supporting plate 150, bit module 160, etc.). The excavation equipment elevator 125 can be supported by a plurality of support members 121 supported by the support truck 120. The excavation equipment elevator 125 can connect the excavation drive part to the wire and lift the excavation drive part by winding the wire.

The water reservoir 140 has a hollow cylindrical shape and can extend to the underground through the center of the water channel 110. The right water tank 140 has appropriate rigidity to support the earth pressure and watertightly divides the inside and the outside of the right water tank 140. The water reservoir 140 can be made of, for example, a corrosion-resistant synthetic resin.

141a, 141b, and 141c, the reinforcing fiber 142, and the outer tubes 143 (141a, 141b, and 141c), the inner tube 141 .

The inner cylinder 141 may be composed of, for example, three inner cylinder elements 141a, 141b, and 141c which are equally divided at 120 degrees and extended in the longitudinal direction. Each of the inner tube elements 141a, 141b, and 141c may have different strength and ductility. For example, the inner barrel element 141c is made of a material having a higher strength than the inner barrel elements 141a and 141b, so that the portion having weak strength can be reinforced. Each of the inner cylinder elements 141a, 141b, and 141c may be connected to each other and joined in a circular shape.

The reinforced fiber membrane 142 is positioned between the inner cylinder 141 and the outer cylinder 143 to reinforce the strength of the cylinder 140. The reinforced fiber membrane 142 may be bonded to the inner tube 141 and the outer tube 143. The reinforcing fiber membrane 142 may be omitted if necessary.

The outer tube 143 may be composed of three outer tube elements 143a, 143b and 143c which are equally divided at 120 degrees and extended longitudinally in the longitudinal direction, for example. Each outer tube element 143a, 143b, 143c may have different strength and ductility. For example, the outer barrel element 143c is made of a material having a higher strength than the outer barrel elements 143a and 143b, so that the portion having weak strength can be reinforced. The outer tubes 143a, 143b, and 143c may be connected to each other and joined together in a circular shape.

When the outer cylinder 143 is joined to the outside of the inner cylinder 141, the connecting points connecting the outer cylinder elements 143a, 143b and 143c are positioned at the center points of the respective inner cylinder elements 141a, 141b and 141c Can be bonded. This ensures that the inner pipe 141 and the outer pipe 143 have weak connection points so that the water pipe 140 is not broken by the lateral pressure acting inside the right water pipe 140.

The water supply unit 130 supplies the water stored in the waterway 110 to the water reservoir 140. The water supply part 130 may be mounted on the support truck 120.

The support plate 150 is formed in a circular shape and is pressed and supported on the inner diameter of the end portion of the water reservoir 140. The support plate 150 serves to support the bit module 160 in a rotatable manner. To this end, the support plate 150 is strongly supported by the right sidewall 140 so that the support plate 150 and the sidewall 140 are kept fixed even when the bit module 160 is rotated.

The support ring 146 can be fitted to the outer diameter of the end portion of the water reservoir 140 to increase the rigidity of the water reservoir 140 on which the support plate 150 is supported. The support ring 146 is made of metal or the like so that the water tank 140 can be kept in a circular state without being deformed even if the support plate 150 presses the water tank 140 strongly.

The support plate 150 can be strongly supported by the water reservoir 140 in such a manner that the support plate 150 itself expands and contracts. The configuration for allowing the support plate 150 to expand and contract is well known in the art and can take many forms. For example, the support plate 150 may expand and contract in a hydraulic drive manner.

Alternatively, the support plate 150 may be pressed and supported by the expansion member 145 positioned between the water reservoir 140 and the support plate 150. When the fluid such as water or air is injected into the expansion member 145 located between the right water bottle 140 and the support plate 150, the expansion member 145 expands and presses the support plate 150 and the right water bottle 140 So that the support plate 150 can be strongly supported by the water reservoir 140.

3A shows a state in which the expansion member 145 is contracted in a state in which no fluid is injected into the expansion member 145 so that the support plate 150 and the bit module 160 can pass through the inside of the water reservoir 140 3B shows a state in which a fluid is injected into the expansion member 145 and the support plate 150 is strongly supported by the inner diameter of the end portion of the water reservoir 140. [

In the state of FIG. 3B, the drilling operation is performed by the bit module 160. At this time, if the upper part of the water reservoir 140 is not supported, it is difficult to perform a stable excavation operation. Therefore, an upper support part 124 for supporting the outer diameter part of the water reservoir 140 is provided on the ground. The upper support portion 124 may be connected to and supported by the support carriage 120.

The bit module 160 is a part for excavating the ground by a rotating operation. The bit module 160 may extend through the center of the support plate 150 and be rotatably supported by the support plate 150. The bit module 160 has an excavating head 161 that contacts the excavation surface 101 to excavate the ground. The bit module 160 may be rotated by a drive motor 155 supported by the support plate 150.

During the drilling operation, the water injector 157 injects the water inside the water well 140 into the excavation surface 101 through the opening 162 formed in the bit module 160.

When the excavation head 161 excavates the ground with the support plate 150 being pressed against the water reservoir 140, the excavation head 161 advances into the ground and accordingly the support plate 150 and the water reservoir 140, .

When the diameter of the excavation gang is equal to the diameter of the right water pipe 140, the right water pipe 140 is brought into contact with the inner wall of the excavation gang and the advancement of the right water pipe 140 is not easy. In order to prevent such a problem, it is necessary to excavate the excavation gang so that the diameter of the excavating gang is larger than the diameter of the water reservoir 140.

In this embodiment, a protruding bit 170 is provided to the bit module 160 to increase the diameter of the excavation gang.

The protruding bit 170 is movable between a protruding position protruding in the circumferential direction from the side end portion 161a of the excavating head 161 and a storing position within the side end portion 161a of the excavating head 161. [ The protruding bit 170 can be moved between the protruding position and the retracted position by the protruding bit driver 171. The protruding bit driver 171 may be installed in the bit module 160.

FIG. 3A shows a state in which the protruding bit 170 is in the storage position, and FIG. 3B shows a state in which the protruding bit 170 is in the protruding position. The protruding bit 170 is in the state shown in FIG. 3A before the excavation work is started or after the excavation work is finished, and the protruding bit 170 is in the state shown in FIG. 3B during the excavation work.

The excavated sludge generated at the time of excavation can be discharged to the ground through the sludge discharge passage 180 extending through the support plate 150. The support plate 150 may have a connection opening 151 connected to the sludge discharge passage 180.

The sludge discharge pump 185 is installed adjacent to the support plate 150 to provide discharge pressure such that excavated sludge can be discharged through the sludge discharge passage 180. The excavated sludge can be sucked through the connection opening 151 by the sludge discharge pump 185 and discharged to the ground through the sludge discharge passage 180.

A shielding ring 147 may be provided to prevent excavated sludge from leaking out of the pail 140 during excavation. Such a shielding ring 147 may be provided adjacent to the end of the water reservoir. For example, the shielding ring 147 may be coupled to the support ring 146 to prevent excavated sludge from flowing out of the well 140.

As shown in FIG. 5A, when the excavation work progresses and the water tank 140 advances to the ground, the other water tank 190 is placed on the water tank 140 on the ground, It is possible to fill the water reservoir with a desired depth in the basement while bonding the water basins 190 to each other. Fig. 5B shows a state in which the right water tank 140 and the right water tank 190 are joined.

Each of the right and left water pipes 140 and 190 may include an inner pipe, a reinforced fiber membrane, and an outer pipe, as shown in FIG. If the water reservoirs 140 and 190 are formed as one long cylinder, it may be difficult to pass the wires or other electric wires connected to the excavation equipment elevator 125 between the water reservoirs 140 and 190. In order to prevent such a problem, a single cylinder can be formed by assembling the equally divided water reservoirs 140 and 190 in the field so that the wires or electric wires can be passed between the water reservoirs 140 and 190 .

According to the above-described well drilling apparatus of the present invention, the excavation proceeds while the support plate 150 is pressed and supported by the inner diameter of the end portion of the water reservoir 140, and the water reservoir 140 advances as the excavation proceeds. So that the water reservoir 140 can be stably buried in the basement to a desired depth.

Further, since the excavation drive unit is located adjacent to the excavation surface 101, power transmission is easy, and problems such as twisting or breakage of the power transmission shaft are not generated.

Also, since the water tank 140 safely supports the inner wall of the excavation gang during excavation, the risk of collapsing the excavation gang can be prevented.

Further, the diameter of the excavating gang can be increased by the protruding bit 170 movable between the protruding position and the accommodating position, and after the excavation is finished, the excavating drive unit It can be easily pulled to the ground through the inner diameter of the water reservoir 140.

6A to 6E are views sequentially illustrating a method of excavating a large diameter well according to an embodiment of the present invention. The method of excavating the deep well is to use the deep well excavation apparatus described with reference to FIGS. 1 to 5B. Hereinafter, a method of excavating a deep drawing well according to the present invention will be described with reference to FIGS. 1 to 6E.

Referring to FIGS. 6A and 6B, first, a waterway 110 for storing water is formed by extending a predetermined depth from the ground.

Next, a hollow cylindrical water tank (or first water tank) 140 hollowed in the center of the waterway 110 is placed.

Next, a support plate 150 press-supported on the inner diameter of the end of the first water reservoir 140, a support plate 150 extending through the center of the support plate 150 and rotatably supported on the support plate 150, The bit module 160 having the head 161 is positioned. The support plate 150 and the bit module 160 form a single excavation drive unit and the excavation drive unit is descended into the excavation equipment elevator 125 from the excavation equipment elevator 125 into the water reservoir 140, And can be positioned at the inner diameter of the end of the water bottle 140. At this time, the support ring 146 may be fitted to the outer diameter of the end portion of the water reservoir 140 in order to increase the rigidity of the water reservoir 140 in which the support plate 150 is supported. An expansion member 145 is positioned between the first water reservoir 140 and the support plate 150 so that the support plate 150 is pressed against the first reservoir 140 by injecting fluid into the expansion member 145 .

Next, the protruding bit 170 mounted on the bit module 160 is moved by the protruding bit driver 171 to the protruding position. At this time, the protrusion bit 170 protrudes in the circumferential direction from the side end portion 161a of the excavation head 161. [

Next, the water in the waterway 110 is poured into the first water tank 140 by the water supply unit 130 and water in the first water tank 140 is supplied to the bit module 160 To the excavation surface 101 through the opening 162 of the excavator.

Next, the bit module 160 and the protruding bit 170 are rotated to excavate the ground.

Next, the excavated sludge generated by the excavation is discharged to the ground through the sludge discharge passage 180 extending through the support plate 150.

Next, referring to FIG. 6C, the second water reservoir 190 is positioned above the first water reservoir 140 on the ground as the first water reservoir 140 is advanced and buried underground by excavation, The first water container 140 and the second water container 190 are joined together. The excavation work continues in the ground while joining the first and second water reservoirs 140 and 190.

6D, when the ground is excavated to a desired depth, the protruding bit 170 is moved to the receiving position within the side end portion 161a of the excavation head 161, The fluid is discharged to cause the expansion member 145 to contract. Accordingly, a space is formed between the first water tank 140 and the support plate 150.

Next, as shown in Fig. 6E, the excavation drive unit is pulled through the first water reservoir 140 and moved to the ground.

Next, concrete is placed on the bottom surface of the first water reservoir 140 so that water can be confined in the water reservoir buried underground.

Next, a water tank protruding on the waterway 110 is arranged, filling a clearance between the waterway 110 and the water tank so that water does not flow between the waterway 110 and the water tank.

By this method, a large-diameter large-diameter well can be formed underground.

According to the above-described method of excavating a large diameter well, the excavation proceeds while the support plate 150 is pressed and supported by the inner diameter of the end of the first water reservoir 140. As the excavation proceeds, the first reservoir 140 And the second water reservoir 190 is joined to the first water reservoir 140 on the ground. Therefore, the water reservoir can be stably buried in the basement to a desired depth, Can be formed.

Further, since the excavation drive unit is located adjacent to the excavation surface 101, power transmission for excavation is easy, and problems such as twisting or breakage of the power transmission shaft do not occur.

Further, since the water reservoir safely supports the inner wall of the excavation gang during excavation, the excavation work can be performed stably while preventing the risk of collapse of the excavation gang.

Further, the diameter of the excavation gantry can be made larger than the inner diameter of the right water bottle by the protruding bit 170 movable between the protruding position and the storing position, and after the excavation is completed, the protruding bit 170 is placed in the storage position The excavation drive unit can be easily pulled to the ground through the inner diameter of the water reservoir.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention will be.

100: Super excavation well digging device
101: Excavation surface
110: frequency
111: rail
120: Support carriage
124: upper support
125: Excavation equipment lift
130: Water supply part
140, 190: Raw bucket
145: Expansion member
146: Support ring
147: shield ring
150: Support plate
155: drive motor
157: Water sprayer
160: bit module
161: Excavation head
170: protruding bit
180: sludge discharge passage
185: Sludge discharge pump

Claims (7)

In the drilling rig for deep drilling,
Hollow hollow cylindrical pail;
A support plate pushed and supported by an inner diameter of an end portion of the water reservoir;
An upper support for supporting an outer diameter of the water reservoir on the ground;
A water supply part for supplying water to the inside of the water reservoir;
A bit module extending through the center of the support plate and rotatably supported on the support plate, the bit module having an excavating head for excavating the ground;
A water spraying unit for spraying water in the water reservoir through the bit module to the excavation surface;
A protruding bit mounted on the bit module and movable between a protruding position protruding in a circumferential direction than a side end portion of the drill head and a retracted position within a side end portion of the drill head;
A sludge discharge passage extending through said support plate for discharging excavated sludge;
A sludge discharge pump installed adjacent to said support plate and providing a discharge pressure for discharging excavated sludge;
Wherein the excavator is installed in the excavator. The method according to claim 1,
A support ring fitted to the outer diameter of the end portion of the water reservoir to increase the rigidity of the water reservoir to which the support plate is supported;
Further comprising an excavator. 3. The method of claim 2,
A shield ring installed adjacent to an end of the water reservoir to prevent leakage of digging sludge to the outside of the water reservoir;
Further comprising an excavator. The method according to claim 1,
A water depth extending from the ground by a predetermined depth to store water;
Further comprising:
The water reservoir may extend underground through the center of the waterpath,
Wherein the water supply unit supplies the water stored in the channel to the well can. 5. The method of claim 4,
A rail installed along an upper portion of the channel;
A support carriage installed movably along the rail;
An excavation equipment elevator supported by the support truck to elevate the support unit and the bit module;
Further comprising an excavator. In a method of excavating a deep well,
Forming a channel for storing water, the channel extending a predetermined depth from the ground;
Positioning a first cylindrical water hole in the center of the waterway;
Positioning a bit module having a support plate which is pressed to be supported by an inner diameter of an end of the first reservoir and an excavating head which extends through the center of the support plate and is rotatably supported by the support plate and excavates the ground;
Positioning a protruding bit mounted on the bit module so as to protrude in a circumferential direction from a side end portion of the drilling head;
Injecting the water of the channel into the first wellbore and injecting the water through the bit module onto the excavation surface;
Drilling the ground while rotating the bit module and the protruding bit;
Discharging excavated sludge to the ground through a sludge discharge passage extending through the support plate;
Placing the second well in the ground above the first well and bonding the first well to the second well in the ground as the first well is advanced and buried underground by excavation;
Of the excavation. The method according to claim 6,
Fitting a support ring at an outer diameter of an end of the water reservoir to increase rigidity of the reservoir to which the support plate is supported;
Further comprising the steps of:

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