KR20210120695A - a horizontal excavator for obtaining the underground water - Google Patents

Abstract

A radial system for excavating an underground bedrock well comprises: a base frame having a base frame fixing unit for fixing at a drilling position of a water collection well inside an underground collecting well; a rotary table rotatably supported on the base frame, and having a rotating angle fixed by a rotating position fixing unit; a water collection well drilling unit including a guide lead installed on the rotary table, a transfer table moving forward and backward along the guide lead, a head unit installed on the transfer table, and having a driving shaft driven by a second driving source and having a hollow, and a transfer table driving unit for moving the transfer table forward and backward along the guide lead; a pneumatic supply unit for supplying high pneumatic pressure to the hollow of the driving shaft; and an excavating unit installed on a rod to drill a water collection well. Therefore, the number of processes for drilling the water collection well can be reduced.

Description

Radial rock well excavator {a horizontal excavator for obtaining the underground water}

The present invention relates to a radial rock well excavator, and more particularly, to a radial rock well excavator that can be mounted inside an underground collection well to drill radial collection wells in the horizontal direction to increase the amount of water harvested.

Recently, as the problem of quantity and quality of water resources has emerged as a national concern, various efforts are being made to secure high-quality water resources. In particular, as interest in RBF (RiverBank Filtration) water intake, which is one of the indirect water intake methods whose utility is increased due to the linkage of groundwater/surface water, is growing, many studies are being conducted on this.

Surface water intake, the current domestic water intake method, is sensitive to seasonal changes in quantity and water quality and various water quality accidents.

There are various facilities required for water intake, such as large vertical wells, radial collection wells, and inclined wells, but radial collection wells have recently attracted attention because they take in a large amount of raw water and do not significantly affect the surrounding aquifer. However, in the case of a radial collecting well, it is difficult to construct a horizontal well and there is a burden on maintenance.

On the other hand, in order to collect a large amount of high-quality groundwater from an aquifer existing underground, a collection well into the aquifer must pass. However, if the collecting well is excavated to the hard rock layer and does not penetrate the aquifer accurately, a huge cost is incurred. Of course, prior to excavating deep wells, various geological surveys are carried out to determine the location of the aquifer existing in the underground hard rock layer.

Since the detection method of the aquifer that relied on such geological surveys is not accurate and has unreliable limitations, in the case of a collection well that does not pass through the aquifer, in order to increase the amount of water collected, use a horizontal excavator in the working space of the underground collection well. A device for drilling a collection well has been proposed.

Korean Patent Registration No. 10-0250580 discloses a horizontal excavator for collecting underground bedrock water. The posted horizontal excavator is made of a predetermined width and length to be installed horizontally by being supported on the inner wall of the working space of the excavated underground collecting well, and includes a fixed bed having a pair of guide rails installed parallel to the upper part, and the guide of the fixed bed A transfer frame disposed on the rail and installed to be movable in the front and rear direction by a front-back operation means, and the compressed air supplied at high pressure to the inside while being rotated forward and reverse by a driving means at the center on the transfer frame can be ventilated. An excavation propulsion shaft is installed so as to be provided, and an excavation unit that excavates while striking the hard rock layer with a driving force and compressed air successively transmitted to the tip of the excavation propulsion shaft.

The conventional horizontal excavator as described above has a structure in which the excavation unit is moved in only one direction by the transfer frame supported on the fixed bed, so it is difficult to excavate in a radial direction. In particular, since the excavation unit has a structure that moves in the horizontal direction, it is impossible to perform drilling in an inclined direction for the underground collecting well.

Korean Patent Registration No. 10-0284857 discloses a method for collecting underground bedrock water, and Korean Patent Registration No. 10-1547842 discloses a tip-rotating horizontal fixing device. Korean Patent Registration No. 10-1496733 discloses a horizontal anchoring device having a linear guide pipe.

In the horizontal fixing device as described above, it is relatively difficult to drill a deep hole in a horizontal direction, and it is difficult to continuously construct a radial hole, and it is practically difficult to perform a radial drilling operation.

And in Korean Patent Publication No. 2010-067165, a non-powered horizontal well cleaning device is posted.

Korean Patent Registration No. 10-0284857 Korean Patent Registration No. 10-1547842 Korean Patent Registration No. 10-1496733 Korean Patent Publication No. 2010-067165

An object of the present invention is to solve the above problems, and an object of the present invention is to provide a radial rock well excavator capable of improving the drilling efficiency of collecting wells in a radial direction within an underground collection well.

Another object of the present invention is that the chip can be smoothly discharged during the drilling of the water collecting wells in any direction in a state where the base frame is mounted inside the underground collecting well, and the rod is the bottom of the collecting well due to its own weight. It is to provide a radial rock well excavator that can prevent contact with the surface.

The radial rock ore excavator of the present invention for achieving the above object includes a base frame having a position fixing unit for fixing at the perforation position of the water collection well inside the underground collecting well, and rotatably supported by the base frame and rotated a rotary table whose rotation angle is fixed by the government;

A guide lead installed on the rotary table, a transfer table that moves forward and backward along the guide lead, a head part installed on the transfer table and driven by a driving part and having a drive shaft having a hollow part, along the guide lead A water collecting pipe well drilling unit including a transfer table driving unit for moving the transfer table forward and backward;

It is characterized in that it comprises a pneumatic supply unit for supplying high pressure pneumatic pressure to the hollow part of the drive shaft installed at the end of the rod coupled to the drive shaft, and an excavation unit installed on the rod to drill a water collecting well.

In the present invention, both sides of the guide lead are further provided with a guide lead fixing unit for supporting the guide lead on the inner wall of the underground collecting well to prevent the thrust from acting on the rotary table during the drilling operation.

And a rod flotation unit is installed in the connection portion of the rods so that the perforated chip can be smoothly discharged.

The radial rock well excavator of the present invention according to the present invention can rotate the water collecting well drilling unit in the circumferential direction in order to drill the water collecting wells inside the underground collecting well, so that the work man-hours for drilling the water collecting well can be reduced. In particular, in performing the drilling operation of the water collecting well, the problem that the chip is not smoothly discharged can be fundamentally solved by the rod being in contact with the bottom surface of the perforated water collecting well due to sagging due to its own weight.

1 is a side view showing a state of radially drilling a water collecting well with respect to an underground collecting well by a radial rock well excavator according to the present invention;
2 is a perspective view of a radial rock well excavator according to the present invention;
3 is a partially cut-away perspective view of the radial rock well excavator according to the present invention;
Figure 4 is a cross-sectional view showing a state in which the water collecting pipe is perforated by the water collecting pipe perforating unit according to the present invention;
5 is a partially cut-away perspective view of the rod floating unit shown in FIG. 4;
Figure 6 is a perspective view showing a state in which a rod having a chip discharge inducing unit installed on both sides of the rod floating unit is coupled.

The radial rock well excavator according to the present invention is for drilling collection wells for finding an aquifer while supported on the inner wall of an underground collection well, and one embodiment is shown in FIGS. 1 to 4 .

Referring to the drawings, the radial rock excavator 10 according to the present invention includes a base frame 11 fixed by a base frame fixing unit 20 for a drilling position of an inner wall of an underground collection well, and the base frame 11 ) is rotatably installed on the upper surface, and provided with a rotation table 30 to which the rotation angle is fixed by the rotation angle fixing part (31).

And it is installed on the rotary table 30, and includes a water collecting pipe drilling unit 50 for piercing the water collecting well 300 radially with respect to the underground collecting well 200. A rod 100 that is screw-coupled to the drive shaft of the water collection pipe well drilling unit 50 is installed, and the excavating unit 110 is installed at the end of the rods 100 that are interconnected as the depth of the drilling increases.

A rod floating unit 120 is installed at the connection portion of the rods 100 connected to the drilling unit 100 so that the chip, which is a perforated sub-item, can be smoothly discharged.

The radial rock well excavator according to the present invention configured as described above will be described in detail for each component as follows.

The size of the base frame 11 of the radial rock excavator 10 according to the present invention is preferably smaller than the diameter of the underground collecting well 200 so that it can be inserted into the underground collecting well 200 . However, the present invention is not limited thereto, and may be formed of a separation and assembly structure for smooth insertion into the underground collection well. The base frame fixing unit 20 installed on the base frame 11 is for supporting the base frame on the inner wall of the underground collecting well 200 , and a plurality of screw jacks installed on the outer surface of the base frame 11 . can be made with The base frame fixing unit 20 may include a support rod 21 screwed to the base frame and an anchor pad 22 installed at an end of the support rod 21 .

The base frame 11 is rotatably installed with a rotary table 30 on which the above-described water collecting pipe puncture unit 50 is installed. The rotating table 30 is rotatably bearing the central axis of the rotating table 30 on the main frame 11 so as to face the position of the water collecting pipe 300 for drilling the water collecting pipe drilling unit 50 . is supported And the base frame 11 is provided with a rotation angle fixing part 31 so as to fix the rotation position of the rotation table (30).

The rotation angle fixing part 31 is rotatably installed on the base frame 11 and passes through the fixing jaw 32 and the fixing jaw 32 that are in close contact with the upper surface of the rotation table 30 during rotation to the base A position fixing member 33 screwed to the frame 11 is provided. The rotation angle fixing unit 31 is not limited to the above-described embodiment, and may have a structure of a worm and a worm wheel for forward and reverse rotation of the central axis of the rotation table 30 .

The water collecting pipe puncture unit 50 is installed on a rotary table 30 rotatably supported on the main frame 11 , and the front side of the guide lead 51 is a hinge shaft 55 installed on the rotary table 30 . ), and the rear end side of the guide lead 51 is supported by a height adjustment unit 56 installed on the rotary table 30, and the guide lead 51 with respect to the upper surface of the rotary table 30. angle can be adjusted.

The height adjustment unit 56 includes a lifting member 56a installed on both sides of the guide lead 51, a support member 56b rotatably installed on the rotary table 30, and the support member 56b. It is rotatably installed and provided with an elevating screw (56c) screwed with the elevating member (56a). The support member (56b) is formed with a hollow portion so that the elevating screw can be installed, a guide long hole for elevating the elevating member (56a) is formed on the side. And a handle for rotating it is installed on the end side of the elevating screw 56c. The guide lead 51 has a hollow portion 52 formed in the longitudinal direction. The guide lead 51 is provided with a transfer table 57 that is slid in the forward and backward directions by the transfer table driving unit 60 . A separation prevention guide projection 53 is formed on both sides of the guide lead 51 to prevent separation of the transfer table in the longitudinal direction. The guide lead 51 is preferably formed in a rectangular cross-section.

The transfer table driving unit 60 is installed on the rear end side of the guide lead 51 and is installed on the driving sprocket 62 rotated by the first driving source 61 and the support shaft on the front end side of the guide lead 51. A driven sprocket (63) and a drive chain (64) having both ends fixed to both sides of the transfer table (57) and caught on the drive sprocket (62) and the driven sprocket (63). The first driving source 61 is preferably a motor. However, the present invention is not limited thereto, and an air motor may be used.

The transfer table 60 is provided with a head portion 70 having a driving shaft 71 installed thereon for rotating the excavating unit 110 connected to the drilling rod 100 . A second driving source 72 for rotating the driving shaft 71 forward and backward is installed in the head portion 70 , and the second driving source 72 may be a geared motor having a speed reducer. It is preferable that the geared motor having the speed reducer uses a sub-motor to control the number of rotations of the drive shaft.

A hollow portion for supplying high-pressure air is formed in the drive shaft 71 , a male screw portion for coupling with the lot 100 is formed on the front end side of the drive shaft 71 , and pneumatic pressure is formed on the rear end side of the drive shaft 71 . It is connected to the pneumatic supply pipe 75 of the supply unit (not shown) by a rotary joint to continuously supply high-pressure air through the hollow part. The high-pressure supply unit may be a compressor.

On the other hand, the guide lead is fixed to the guide lead 21 so that the thrust acting on the guide lead 51 does not act on the rotary table 30 when the base frame 11 is fixed to the underground collecting well 200 when drilling. A unit 80 is further provided.

The guide lead fixing unit 80 includes a first lead fixing part 81 installed on the front surface of the guide lead 51 and a second lead fixing part 85 installed on the rear surface of the guide lead 51 . The first and second lead fixing parts 81 and 85 have substantially the same configuration. The first lead fixing part 81 includes a first screw body 82 on the front side of the guide lead 51 and a first screw support member 83 screwed to the first screw body 82, and the A first anchor pad 84 installed on the first screw support member 83 is provided.

The second lead fixing part 85 includes a second screw body 86 on the rear side of the guide lead 51 and a second screw support member 87 screwed to the second screw body 86; A first anchor pad 88 fixed to the second screw support member 87 is provided. The first and second lead fixing parts 81 and 85 may be formed of a screw jack.

The excavation unit 110 is screwed to the rod 100 screwed to the drive shaft 71 . The drilling unit 100 may be formed of an air hammer. However, the present invention is not limited thereto, and a water hammer may be used, and a bit may be installed at the end of the end rod.

On the other hand, the rod lifting unit 120 is the bottom surface of the drilling hole in which the rod is excavated by the weight of the rod 100 connecting the excavating unit 110 and the drive shaft 71 as shown in FIGS. 5 and 6 . A connection member 121 having a hollow portion 122 corresponding to the rod 100 is provided to prevent contact with the excavated chip to be smoothly discharged. A connection female screw portion 123 coupled to the male screw portion of the rod 100 to be connected is formed on one side of the connection member 121 , and the other side of the connection member 121 is a male screw connection to which the female screw portion of the rod 100 is coupled. A portion 124 is formed.

And the support member 125 is rotatably installed on the outer circumferential surface of the connecting member 121, and the bottom surface of the water collecting pipe 300 protrudes a predetermined length from the outer circumferential surface of the support member 125 to drill the rod 100. Floating pieces 126 for supporting to a predetermined height from the are installed. The floating piece 126 is made of a strip-shaped member having a predetermined width. The floating piece 126 is preferably formed as narrow as possible so that the chips (soil or rock pieces), which are by-products generated in the excavation process by the drilling unit 110, can be smoothly discharged.

On the other hand, at least one of the rods 100 that are installed between the drive shaft 71 and the drilling unit 100 and connect them, a chip discharge induction unit 130 for discharging chips is installed.

The chip discharge induction part 130 is fixed to the outer peripheral surface of the rod 100 installed on both sides of the rod lifting unit 120, both ends are fixed in the direction opposite to the rotation direction of the rod 100 during drilling in a spiral wound rope (131) to provide The spiral pitch of the rope 131 wound around the rod 10) is preferably formed to have a length excluding both sides of the rod 100, and it is preferable to have one pitch.

The operation of the radial rock well excavator according to the present invention configured as described above will be described as follows.

In order to drill the water collecting well 300 in the state where the underground collecting well is drilled up to the hard rock layer, the base frame 11 of the radial rock well excavator is fixed to the inner surface of the underground collecting well at the site for forming the water collecting well 300 do.

As shown in FIG. 1, by lowering the excavator of the underground collecting well 200 to rotate and withdraw the support rods 21 of the base frame fixing unit 20 in a state where the rotary table 30 is maintained in a horizontal state, these The anchor pad 22 installed at the end of the is supported by being pressed against the inner wall of the underground collecting well 300 .

Then, the angle of the guide lead 51 is adjusted after the rotation table 30 is rotated so that the driving shaft 71 of the head is positioned at the site where the water collection pipe 30 is to be formed.

In this state, by rotating and advancing the first and second screw support members 82 and 87 of the first and second lead fixing parts 81 and 85 installed at the front and rear sides of the guide lead 51, installed at the ends thereof The first and second anchor pads 84 and 88 are in close contact with the hard rock layer of the underground collecting well 200 to fix the guide lead 51 .

When the fixing of the guide lead 51 is completed as described above, the transfer table 57 is retracted using the transfer table driving unit 60, and then the rod 100 is mounted on the drive shaft, and the excavating unit 110 is installed at the end thereof. install And by supplying high-pressure air to the hollow part of the drive shaft 71 using the pneumatic supply unit to drive the air hammer, which is the excavation unit 110 , and rotate the drive shaft 71 .

And, by rotating the first driving source 61 of the transfer table transfer unit 60 to move the chain 64, the transfer table 57 connected thereto is advanced to perform the drilling operation. As the drilling depth of the water collection well 300 increases, the transfer table 57 is moved backward, and then the drilling operation is performed while connecting the rod 100 . As the depth of the drilling increases, the rod 100 is connected using the rod lifting unit 120 as shown in FIG. .

As described above, the chips generated during the excavation operation by the excavating unit 110 are high-pressure air supplied to the excavating unit 110 through the hollow part of the driving shaft 71 is discharged through the bit of the excavating unit 110, It rides on the exhausted high-pressure air and is discharged.

In this process, the rod 100 is continuously rotated by the drive shaft. Between the rods 100, the rod 100 is floated from the bottom surface of the water collection well 300 by the rod flotation unit 120. As a result, the by-products from the perforation ride on the high-pressure air and are discharged to the outside.

In particular, since at least one of the rods is provided with the chip discharge induction unit 130, the by-products are moved to the outside. That is, since the chip re-extraction guide part 130 has a rope 131 installed on the outer circumferential surface of the rod 100 in a spiral in the opposite direction to the rotation direction of the rod for drilling, the drilling operation is performed by the rope 131 while the By-products are discharged to the outside.

As described above, according to the present invention, since the water collection well 300 connected to the aquifer can be drilled in the horizontal direction in the underground collection well, it is possible to secure the amount of underground water.

In particular, the present invention provides a large amount of high-quality groundwater to be taken in by drilling a solid hard rock layer to a required depth in a narrow working space in an underground collection well excavated vertically to the underground bedrock layer and excavating the collection wells in the horizontal direction. , it will have the effect of dramatically reducing the construction period and labor force by improving the work efficiency according to the development of groundwater. In addition, since the water collecting pipe perforation unit 50 is installed on the rotary table 30, the drilling operation can be easily performed at any position on the inner circumferential surface of the water collecting pipe.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will have to be determined by the technical spirit of the appended claims.

Claims (5)

A base frame having a base frame fixing unit for fixing at the perforated position of the water collection well inside the underground collecting well, a rotary table rotatably supported by the base frame and fixed at a rotation angle by a rotation position fixing part;
A guide lead installed on the rotary table, a transfer table moving forward and backward along the guide lead, a head portion installed on the transfer table, driven by a second driving source, and having a drive shaft having a hollow portion, and the guide lead A water collecting pipe well drilling unit including a transfer table driving unit for moving the transfer table forward and backward along
and a pneumatic supply unit for supplying high-pressure pneumatic pressure to the hollow part of the drive shaft, and an excavating unit installed on the rod to drill a water collecting well. The method of claim 1,
Radial rock well excavator, characterized in that it further comprises a guide lead fixing unit for fixing the guide rail by supporting the guide rail on the inner wall of the underground collecting well on the front and rear end sides of the guide lead. The method of claim 1,
Radial rock well excavator, characterized in that a rod flotation unit is installed in the connection portion of the rods so that the perforated chips can be smoothly discharged. 4. The method of claim 3,
The rod lifting unit has a connecting member formed with a connecting female screw portion coupled to the male screw portion of the rod connected to one side having a hollow portion corresponding to the rod, and a connecting member formed with a male screw portion coupled to the female screw portion of the rod at the other side;
A radial rock bed comprising: a support member rotatably installed on the outer circumferential surface of the connecting member; and floating pieces protruding from the outer circumferential surface of the support member to support the rod at a predetermined height from the bottom surface of the perforated collection pipe well excavator. 5. The method of claim 4,
Radial rock well excavator, characterized in that the chip discharge guide part is further provided on the outer peripheral surface of the rod connected to the rod flotation unit.

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