KR20190083778A - Overcutting system and method using waterjet - Google Patents

Abstract

An overbreak excavation device using a water jet, according to the present invention, comprises: a rotatable first body portion; and a second body portion connected to the first body portion and accommodating a water jet portion provided with a flow rate generation portion. The first body portion includes an abrasive input portion provided with an abrasive tank, a water jet nozzle portion connected to the water jet portion and the abrasive input portion, and a cutter portion provided with a depth measuring portion and a rock cutter. The water jet nozzle portion includes nozzle head portions formed on both sides of the first body portion. Overbreak is generated by the water jet nozzle portion while the first body portion rotates. According to the present invention, excavation and overbreak generation can proceed simultaneously and quickly even in a steep curve section of the hard rock ground. An operation mode can be changed according to the depth of the overbreak required for rapid excavation in the steep curve section, thereby making stable and efficient excavation construction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a water jack drilling apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for excavation using water jets, and more particularly, to a excavation apparatus and method that can be easily advanced even in a steep section.

There are many obstacles in the planning of the urban area in the plan of the large-scale urban area, which has a negative effect on the selection of the route and the increase of the construction cost due to the extension of the obstacle and the increase of the depth, for example, the occupancy, . Therefore, it is inevitable to plan the ramp area considering the economical efficiency. However, in general, the cavity is constructed with R (radius of curvature) = 300m. In the case of Korea, there is a construction achievement of R = 60m, but the construction equipment and technology of R = 30m grade is not enough.

In order to develop the construction technology of the steep section, additional excavation technology is needed in the outer part of the turn radius in order to smoothly move the shield tunnel drilling machine (TBM, Tunnel Boring Machine) in the steep section. The cutter used for the excavation is distinguished by a copy cutter for advancing the steep section and an over-cutter for smooth excavation.

If sufficient excavation is not created around the excavation surface, the TBM equipment is caught in the surrounding ground in the rushing section, making it impossible to advance. Therefore, in such a steep section, an additional excavation is generally generated by using a copy cutter.

However, there is a limitation that the excavation technology using the existing copy cutter can not be utilized in a hard ground (rocky area). Many cases of construction where the copy cutter is damaged in hard ground have been reported. As a result, it is impossible to bend the curved portion and the economical efficiency is decreased due to the extension of the construction period.

Generally, the tunnel excavation equipment can excavate the tunnel to form a circular cross section, and minimizes the ground deformation caused by excavation of the ground, thereby maximizing the safety in the construction process. In addition, the tunnel constructed using the tunnel excavation equipment is excellent in the quality of the structure and easy to manage the construction. However, the tunnel excavation equipment has a drawback that the speed is slow and the price is high.

An example of the prior art is Patent Document 1 (US Patent Publication No. 2015-0233242). Patent Document 1 relates to a TBM, and more particularly, to a TBM equipped with a geological detection system so that a construction can be easily performed by predicting a ground condition in a construction process.

According to Patent Document 1, data can be used to predict the ground condition quickly, to increase the stability of the construction process based on the data, and to prevent breakage of the apparatus due to ground water, hard ground, and the like. However, such a technique alone can not effectively increase the pumping speed, and can not be used to generate the necessary excavation in the steep section, so that the pumping speed is low and the price is high.

Even if the geological condition can be predicted by the geological detection system, the ground condition is predicted and especially the hard ground is found. Therefore, the TBM should avoid this or remove the obstacle through additional work, do. That is, additional devices and operations are required to generate the necessary excursions in the substantially steep section, and the copy cutter of the TBM can still be damaged by the hard ground.

Therefore, it is now necessary to produce a TBM that can easily generate necessary excavation in a steep section, and has good durability without being damaged even when used in a hard rock foundation.

US 2015-0233242 A1

SUMMARY OF THE INVENTION It is an object of the present invention to provide an excavator drilling apparatus and method which can be used in a hard rock foundation having a steep section.

According to an aspect of the present invention, there is provided an excavator drilling apparatus using a water jet, comprising: a rotatable first body part; And a second body part connected to the first body part and accommodating a water jet part having a flow rate generating part, wherein the first body part comprises: an abrasive insert part having an abrasive tank; A water jet nozzle part connected to the water jet part and the abrasive charging part; And a cutter unit having a depth measuring unit and a rocker cutter, wherein the water jet nozzle unit includes a nozzle head unit formed on both sides of the first body unit, and the first body unit is rotated by the water jet nozzle unit The oyster is generated.

The high-pressure fluid generated in the flow rate generator is transmitted to the nozzle head through the pressure pipe, and the rotary pipe joint is provided in the pressure pipe. It is preferable that the hydraulic pipe on the first body portion side is rotated while the rotation of the hydraulic pipe on the first body portion side is prevented.

The abrasive insert unit may further include an abrasive tank for accommodating the abrasive material; A pressure holding part connected to the abrasive tank to maintain a pressure in the abrasive tank; An abrasive measuring unit for measuring an abrasive amount in the abrasive tank; And an injection amount adjusting unit for adjusting an amount of the abrasive to be introduced into the water jet nozzle unit.

In addition, the predetermined target cutting depth is determined by the articulation angle between the first body part and the second body part and the size of the TBM.

The abrasive insert unit may further include an abrasive tank for accommodating the abrasive material; An abrasive measuring unit for measuring an abrasive amount in the abrasive tank; And an injection amount adjusting unit for adjusting an amount of the abrasive to be supplied to the water jet nozzle unit by controlling the pressure of the abrasive tank.

The waterjet nozzle unit may include at least two nozzle heads; A head protector for blocking the nozzle head from the outside; A nozzle moving part connected to the nozzle head part; And a bypass portion configured to selectively deliver fluid through at least one of the at least two nozzle heads.

Preferably, the nozzle head portion is accommodated in the accommodating portion formed on both sides of the first body portion, and the head protector is provided on the first body portion to open and close the accommodating portion while slidingly moving.

In addition, it is preferable that the nozzle head portion is accommodated in the accommodating portion when not in use, and can be protruded from the accommodating portion by the nozzle moving portion when used.

At least two of the nozzle head portions include a first nozzle head portion and a second nozzle head portion. When fluid is passed through the first nozzle head portion to complete the first water jet creating operation, the bypass portion It is preferable that a fluid is passed through the second nozzle head portion to perform a second water jetting operation.

It is preferable that the excavation generated in the primary waterjet creation work and the excavation generated in the secondary waterjet creation work are spaced apart from each other by a predetermined distance.

Preferably, the first nozzle head and the second nozzle head are reciprocally movable inward and outward of the first body, and also reciprocate in the longitudinal direction of the first body.

It is preferable that the rock between the excavation produced in the primary waterjet excavation operation and the excavation spaced apart from each other by a predetermined distance generated in the secondary waterjet excavation operation is broken by the rock cutter.

Preferably, the rock cutter is accommodated in a receiving portion provided on both sides of the first body portion, and the rock cutter is connected to the cutter moving portion so as to be reciprocally movable up and down and right and left.

According to another aspect of the present invention, there is provided a method of excavating an excavated water using a water jet, comprising: inputting a target depth of cut required in a steep section; Adjusting an abrasive input amount based on the target cutting depth and adjusting a hydraulic pressure of the fluid; The water jet nozzle portion is operated to advance the water jet cutting with the abrasive and the fluid; Measuring the depth of the excavation produced by the waterjet cutting; Comparing the depth of the generated excavation with the target depth of cut; A step of judging whether a calligraphy is formed in a groove form; And a step in which the cutter unit is operated when irregularity is generated by the continuous groove shape.

The waterjet nozzle unit may include a nozzle head formed on both sides of the first body, and the first body may rotate while the water jet nozzle unit generates the excavation.

In addition, when the depth of the generated excavation is smaller than the target depth of cut, the waterjet cutting may proceed until the depth of the generated excavation matches the target depth of cut.

The details of other embodiments are included in the detailed description and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and / or features of the present invention and the manner of achieving them will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. And is provided to fully explain the scope of the present invention to those skilled in the art.

As described above, according to the present invention, it is possible to rapidly and easily perform the swing and excavation even in the steep section of the hard rock foundation.

In addition, according to the present invention, it is possible to change the operation mode according to the depth of excavation required for rapid pumping in a steep section, thereby enabling stable and efficient excavation construction.

1 is a conceptual diagram for explaining the overall configuration of a water-drilling excavator according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram for explaining a configuration of a water jet unit of an excavation drilling apparatus using a water jet according to an embodiment of the present invention.
FIG. 3 is a conceptual view for explaining a configuration of an abrasive material input unit of an excavation drilling apparatus using a water jet according to an embodiment of the present invention.
4 is a conceptual diagram for explaining a configuration of a water jet nozzle unit of an excavation drilling apparatus using a water jet according to an embodiment of the present invention.
FIG. 5 is a conceptual diagram for explaining a configuration of a cutter of an excavation excavator using a water jet according to an embodiment of the present invention.
6 is a schematic longitudinal sectional view showing a water-drilling excavator according to an embodiment of the present invention.
FIG. 7 is a schematic cross-sectional view of an end portion of an excavation drilling apparatus using a water jet according to an embodiment of the present invention.
8 is an enlarged schematic cross-sectional view of an end portion of an excavation drilling apparatus using a waterjet according to an embodiment of the present invention.
9 is a view for explaining a step of generating excavation by an excavator using a water jet according to an embodiment of the present invention.
FIG. 10 is a schematic view showing a water excavator using a water jet within a steep section according to an embodiment of the present invention. FIG.
11 is a flowchart illustrating an excavation method using a waterjet according to an embodiment of the present invention.

Before describing the present invention in detail, terms and words used herein should not be construed as being unconditionally limited in a conventional or dictionary sense, and the inventor of the present invention should not be interpreted in the best way It is to be understood that the concepts of various terms can be properly defined and used, and further, these terms and words should be interpreted in terms of meaning and concept consistent with the technical idea of the present invention.

That is, the terms used herein are used only to describe preferred embodiments of the present invention, and are not intended to specifically limit the contents of the present invention, It should be noted that this is a defined term.

Also, in this specification, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise, and it should be understood that they may include singular do.

Where an element is referred to as "comprising" another element throughout this specification, the term " comprises " does not exclude any other element, It can mean that you can do it.

Further, when it is stated that an element is "inside or connected to" another element, the element may be directly connected to or in contact with the other element, A third component or means for fixing or connecting the component to another component may be present when the component is spaced apart from the first component by a predetermined distance, It should be noted that the description of the components or means of 3 may be omitted.

On the other hand, it should be understood that there is no third component or means when an element is described as being "directly connected" or "directly connected" to another element.

Likewise, other expressions that describe the relationship between the components, such as "between" and "immediately", or "neighboring to" and "directly adjacent to" .

In this specification, terms such as "one side", "other side", "one side", "other side", "first", "second" Is used to clearly distinguish one element from another element, and it should be understood that the meaning of the element is not limited by such term.

It is also to be understood that terms related to positions such as "top", "bottom", "left", "right" in this specification are used to indicate relative positions in the drawing, Unless an absolute position is specified for these positions, it should not be understood that these position-related terms refer to absolute positions.

Furthermore, in the specification of the present invention, the terms "part", "unit", "module", "device" and the like mean a unit capable of handling one or more functions or operations, Or software, or a combination of hardware and software.

In this specification, the same reference numerals are used for the respective components of the drawings to denote the same reference numerals even though they are shown in different drawings, that is, the same reference numerals throughout the specification The symbols indicate the same components.

In the drawings attached to the present specification, the size, position, coupling relationship, and the like of each constituent element of the present invention may be partially or exaggerated or omitted or omitted for the sake of clarity of description of the present invention or for convenience of explanation May be described, and therefore the proportion or scale may not be rigorous.

Further, in the following description of the present invention, a detailed description of a configuration that is considered to be unnecessarily blurring the gist of the present invention, for example, a known technology including the prior art may be omitted.

First, referring to FIG. 1, the overall structure of an excavator drilling apparatus using a water jet according to an embodiment of the present invention will be described. 1 is a conceptual diagram for explaining the overall configuration of a water-drilling excavator according to an embodiment of the present invention.

The water jet drilling apparatus using a water jet according to an embodiment of the present invention includes a water jet unit 100 having a flow rate generating unit, an abrasive material input unit 200 having an abrasive tank, a water jet unit 100 and an abrasive material input unit 200, And a cutter unit 400 having a depth measuring unit and a rock cutter.

The water jet unit 100, the abrasive insert unit 200, the water jet nozzle unit 300, and the cutter unit 400 will be described in further detail with reference to FIGS. 2 to 5.

Referring to FIG. 2, a water jetting unit 100 according to an embodiment of the present invention will be described. 2 is a conceptual diagram for explaining a configuration of a water jet unit 100 of an excavation drilling apparatus using a water jet according to an embodiment of the present invention.

The water jet unit 100 is configured such that water can be jetted to a hard rock through a water jet nozzle unit 300 at a high pressure and includes a flow rate generating unit 110, a pressure adjusting unit 120, and a load informing unit 130 .

The flow rate generating unit 110 may include a fluid receiving space for receiving a fluid such as water and a high pressure pump and is connected to the pressure regulating unit 120 and the water jet nozzle unit 300 . And is connected to the flow rate generating unit 110 and the water jet nozzle unit 300 by a pipe capable of withstanding water pressure (hereinafter referred to as a hydraulic pipe).

The pressure regulator 120 may have the same configuration as the pump controller for controlling the high pressure pump so that the hydraulic pressure / flow rate of the fluid delivered from the flow generator 110 to the waterjet nozzle unit 300 can be adjusted have. Preferably, high-pressure water in the range of 50 MPa to 500 MPa is generated by the high-pressure pump and is delivered to the nozzle head 310 through the hydraulic pipe. The pressure regulator 120 according to an embodiment of the present invention can control the pressure of the fluid stepwise.

The load notification unit 130 may be configured to generate a notification when an excessive load is detected when the high-pressure fluid generated by the waterjet generator 110 is jetted to the rock by the water jet nozzle unit 300. As the load informing unit 130 is constructed, the failure of the water jet nozzle unit 300 or the flow rate generating unit 110 due to overload can be prevented.

3, an abrasive insert unit 200 according to an embodiment of the present invention will be described. 3 is a conceptual diagram for explaining a configuration of an abrasive insert unit 200 of an excavation drilling apparatus using a water jet according to an embodiment of the present invention.

In one embodiment of the present invention, the abrasive insert unit 200 includes an abrasive tank 210 for receiving an abrasive, a pressure holding unit 220 connected to the abrasive tank 210 to maintain the pressure in the abrasive tank 210, An abrasive measuring unit 230 for measuring the amount of abrasive in the tank 210 and an input adjusting unit 240 for adjusting the amount of abrasive to be supplied to the water jet nozzle unit 300.

The abrasive tank 210 may be configured to receive a predetermined amount of abrasive material. The pressure holding portion 220 may be configured to maintain the pressure in the abrasive tank 210 so that the abrasive material can be stably injected when the abrasive material is input into the water jet nozzle portion 300. Accordingly, it is possible to easily insert as many abrasives as intended.

The abrasive measuring unit 230 measures the amount of the abrasive in the abrasive tank 210, thereby preventing problems caused by shortage of abrasive. By monitoring the amount of abrasive material, it is anticipated that an additional abrasive material may be required, thereby enabling rapid material procurement and filling. The abrasive may be a material including sand particles having a particle size of 1.0 mm or less, high strength metals, ceramics and the like.

The amount adjusting unit 240 may be constituted by means such as a valve, and the amount of the abrasive to be input may be adjusted according to the opening and closing of the valve. In an embodiment of the present invention, an abrasive sensor (not shown) may be further included so that when the abrasive material is exhausted, the sensor may be sensed and informed to the manager.

The target depth of cut is the depth of the excavation in the rock mass 500 required for easy movement of the excavator using the water jet of the present invention in a steep section, The articulation angle alpha between the first and second body portions 30 and 30, and the size of the TBM. Here, the first body part 20 and the second body part 30 can be connected to each other by providing a refractable part between the first body part 20 and the second body part 30.

Fig. 10 is a view showing an apparatus for excavating a water jets using the water jet of the present invention in a steep section. As shown in Fig. 10, the cutter head portion 10 and the first body portion 20 can be pivoted The desired depth of cut is determined and the second body 30 and the segment 40 connected to the first body 20 are all determined to have the desired depth of cut based on the joint angle? So that it is possible to easily pass through the leaping period in FIG.

In another embodiment of the present invention, only the abrasive tank 210, the abrasive measurement unit 230, and the input amount control unit 240 may be included. In this case, the input amount adjusting unit 240 may be configured as a pump capable of adjusting the pressure of the abrasive tank 210.

The water jet nozzle unit 300 according to an embodiment of the present invention will be described in more detail with reference to FIG. FIG. 4 is a conceptual diagram for explaining a configuration of a water jet nozzle unit 300 of an excavation drilling apparatus using a water jet according to an embodiment of the present invention.

The water jet nozzle unit 300 includes a nozzle head unit 310 provided on both sides of the first body unit 20, a head protecting unit 320 for blocking the nozzle head unit 310 from the outside, a nozzle head unit 310, A rotary joint part 340 provided in a water pressure pipe connecting the water jet nozzle part 300 and the water jet part 100 and a fluid joint part 340 selectively connected to the nozzle head part 310 through a nozzle head part 310, And a bypass unit 350 configured to be able to transmit the signal.

It is preferable that the nozzle head 310 is configured to be at least two and protrude from the first body 20. In an embodiment of the present invention, when there are two nozzle heads 310, they may protrude from the receptacles formed on both sides of the first body portion 20 in opposite directions, .

According to the nozzle head unit 310 positioned in this way, the first body part 20 is rotated to generate the excavation by the water jet cutting technique on the rock bed corresponding to the position where the nozzle head unit 310 is provided.

It is preferable that the nozzle head part 310 is formed to be accommodated in the receiving part formed on both sides of the first body part 20 when the nozzle head part 310 is not used. The head protector 320 serves to cut off the nozzle head 310 from the outside when the nozzle head 310 is received in the receiving portion. The head protector 320 is provided on the first body portion 20, And is configured to open and close.

When the receiving portion is closed by the head protecting portion 320, the nozzle head portion 310 can be protected from materials such as crushed stone and slurry from the outside. The durability of the nozzle head 310 can be increased by preventing these substances from flowing into the nozzle head 310.

When the nozzle head 310 is used, it may protrude from the receiving portion formed on both sides of the first body portion 20, and the power for the nozzle head 310 may be provided by the nozzle moving portion 330. That is, the nozzle moving part 330 is connected to the nozzle head part 310 to provide the power for the nozzle head part 310 to reciprocate from the receiving part. The nozzle moving part 330 protrudes the nozzle head part 310 from the receiving part when the nozzle head part 310 is used and accommodates the nozzle head part 310 again in the receiving part when not in use.

Further, since the degree of protrusion of the nozzle head part 310 from the accommodating part can be adjusted by the nozzle moving part 330, the depth of the excitation to be generated can also be adjusted.

The rotary joint portion 340 is provided in the hydraulic pipe so that the hydraulic pipe is not twisted even if the first body portion 20 is rotated. Accordingly, when the first body part 20 is rotated and the excavation construction progresses, the water can be stably transferred from the water jet part 100 to the nozzle head part 310 through the water pressure pipe which is not twisted.

The bypass unit 350 may further include a bypass valve configured to selectively transmit the fluid to at least two nozzle heads 310. The bypass valve 350 may be a bypass valve.

For example, when two nozzle head portions 310 are provided (hereinafter, referred to as a first nozzle head portion and a second nozzle head portion), the hydraulic pressure tube is divided into a first hydraulic pressure pipe and a second hydraulic pressure pipe The bypass pipe 350, and the first and second hydraulic pipes connected to the respective nozzle heads 310, respectively. Accordingly, at least two nozzle head units 310 can be operated by only one flow rate generating unit 110 such as a high-pressure pump of the water jet unit 100.

When the fluid is passed through the first nozzle head and the first hydraulic pipe to complete the first water jetting operation (first operation mode), the bypass nozzle 350 moves the second nozzle head and the second hydraulic pipe (Second operation mode) can be carried out. The water-drilling rig according to an embodiment of the present invention can be alternately operated in the first operation mode and the second operation mode.

The first and second nozzle head portions may be formed on both sides of the first body portion 20 so that the first and second nozzle head portions are formed while being rotated May be positioned so that they are spaced apart from each other by a predetermined distance.

That is, in one preferred embodiment of the present invention, the first nozzle head and the second nozzle head are vertically and horizontally moved by the nozzle moving part 330 connected to the first nozzle head and the second nozzle head, respectively. The nozzle head 310 can reciprocate not only inward and outward of the first body part 20 but also in the longitudinal direction of the first body part 20. Accordingly, when generating the excavation, the first nozzle head portion and the second nozzle head portion supply fluid and / or abrasive material to a part of the same rock portion, whereby water jet cutting can be performed.

The bypass unit 350 can selectively transmit the fluid from the flow rate generator 110 to the specific nozzle head unit 310 so that the high pressure pump does not need to be turned on and off and the on / It is possible to prevent the occurrence of equipment clash caused by turning off.

 5, the cutter unit 400 according to an exemplary embodiment of the present invention will be described in more detail. 5 is a conceptual diagram for explaining a configuration of a cutter unit 400 of an excavation excavator using a water jet according to an embodiment of the present invention.

The cutter unit 400 includes a depth measuring unit 410, a controller 420 connected to the depth measuring unit 410, a rocking cutter 430 connected to the controller 420, and a cutter moving unit 430 connected to the rocking cutter 430. (440).

The depth measuring unit 410 may be provided on both sides of the first body 20 and may be configured to measure an excavation depth. For example, the depth measuring unit 410 may measure the depth of an excitation generated by irradiating a laser, or a conventional depth measuring apparatus may be used, but is not limited thereto.

Whether or not the excavation has been generated by the depth measuring unit 410 by the target excavation depth can be monitored. In addition, when the excavation is performed on the hard rock by the fluid and / or the abrasive material through the nozzle head 310, not only the depth of the excavation produced by the depth measuring part 410 is measured, The rock form of the periphery can also be predicted.

At this time, the excrement produced in the hard rock bed 500 by the fluid and / or the abrasive supplied from each of the first nozzle head part and the second nozzle head part can be formed in the form of a kurf. Particularly, when the excavation speed of the excavator using the water jet of the present invention is extremely fast, excavation can be performed in such a groove shape, and cutting grooves 510 are continuously formed, so that the excavation is formed on the rock (See FIG. 9).

Asperities can be detected by the depth measuring unit 410, and the controller 420 instructs the rocking cutter 430 to operate. As shown in FIG. 9, the rock cutter 430 can break a plurality of cut grooves 510 generated in the rock through the nozzle head portion 310.

The controller 420 receives the excavation depth information from the depth measuring unit 410 and the rock cutter 430 can crush the rock mass 520 remaining between the plurality of cut grooves according to the command from the controller 420. [ The rock cutter 430 is preferably located at the periphery of the nozzle head 310 or the depth measuring unit 410, but is not limited thereto.

The rock cutter 430 may be formed by a conventional copy cutter or a bit, and may be connected to the cutter moving unit 440 to be reciprocally movable up and down and left and right. In an embodiment of the present invention, the rock cutter 430 may be received in a receiving portion provided on both sides of the first body portion 20. [ The rock cutter 430 can be received together with the receiving portion where the nozzle head portion 310 is received (see FIG. 8), and can be protected when not used by the head protecting portion 320.

Referring to FIG. 6, a water jet drilling apparatus according to a preferred embodiment of the present invention will be described. 6 is a schematic longitudinal sectional view showing a water-drilling excavator according to an embodiment of the present invention.

6, the water excavation apparatus using the water jet includes a cutter head 10 having a cutter bit 11 and a first body 20 connected to the cutter head 10, can do.

The cutter bit 11 may be a bit included in a conventional tunnel excavator. The second body part 30 may be provided with a water jet nozzle part 300 and the second body part 30 may be provided with an abrasive material injection part 200 and a water jet nozzle part 300. In the present invention, And a water jet unit 100 connected to the hydraulic pipe and the rotary joint unit 340.

In the excavation apparatus using the waterjet according to the present invention, the cutter head portion 10 and the first body portion 20 can be pivoted by rotating, and the water jet nozzle portion 300 is provided to generate a curved portion, This is possible. Even if the cutter head portion 10 and the first body portion 20 are rotated by the rotary joint portion 340, the water jetting portion 100 in the second body portion 30 and the water pressure tube are not rotated, This is possible.

7, the nozzle head unit 310, the bypass unit 350, the head protection unit 320, and the depth measurement unit 410 of the excavation drilling apparatus using the water jet according to the embodiment of the present invention Explain. FIG. 7 is a schematic cross-sectional view of an end portion of an excavation drilling apparatus using a water jet according to an embodiment of the present invention.

In the operating state of the present invention shown in FIG. 7, the first nozzle head portion 310 may be operated so that fluid and / or abrasive material is first supplied to the rock side from the first nozzle head portion 310. The depth of the jig generated by the first nozzle head 310 is measured by the depth measuring unit 410 and enables the second nozzle head (not shown) to be operated by the bypass unit 350 .

The depth of the excitation generated by the first nozzle head part 310 and the second nozzle head part can be measured again by the depth measuring part 410 and thus the shape of the generated excitation can be grasped. Accordingly, the excavator drilling apparatus can be easily pivoted even in the steep section, as shown in FIG. 10, through the steps shown in FIGS. 8 and 9.

Next, a water excavation method according to a preferred embodiment of the present invention will be described with reference to FIG. 11 is a flowchart illustrating an excavation method using a waterjet according to an embodiment of the present invention.

As the cutter head portion 10 and the first body portion 20 are rotated, excavation work is performed, and the required excavation depth is calculated and diagnosed at step S100. In this case, the calculation may be performed by a computing unit such as artificial intelligence, or by means such as machine learning. And the second body portion 30 and the segment portion 40 connected to the first body portion 20 are all formed on the basis of the joint angle? It is preferable to determine the depth of the excavation so as to easily pass through the steep section of the excavation.

The input amount of the abrasive material is adjusted according to the inputted target cutting depth and the hydraulic pressure of the fluid is adjusted (S200). The abrasive and fluid are introduced into the water jet nozzle unit 300 to operate the water jet nozzle unit 300 (S300). The water jet nozzle unit 300 is operated and the abrasive material is water-jetted along with the fluid by the nozzle head unit 310 to generate the cutting grooves 510. The depth of cut created here can be adjusted not only by the amount of abrasive input but also by the hydraulic pressure, thus enabling an efficient and economical water jet cutting operation.

The depth of the excitation generated by the depth measuring unit 410 is measured (S400). The measured depth of the excavation is compared with the target depth of cut to determine whether the target depth of cut is achieved (S410). When the depth of the generated excavation is smaller than the target cutting depth, it is preferable that the waterjet cutting progresses until the depth of the generated excavation agrees with the target cutting depth.

At this time, the amount of the abrasive to be introduced and / or the hydraulic pressure of the fluid may be regulated and the water-jet cutting may proceed. That is, by controlling the hydraulic pressure and the abrasive input amount, it is possible to cut the target depth.

When the excavation having the target cutting depth is generated, it is determined whether the depth measuring unit 410 is used to form a groove, that is, a cutting groove 510 is generated (S420). When it is recognized that the concave and convex portions are formed by the plurality of cut grooves 510, the rock cutter 430 of the cutter portion 400 operates to form a plurality of cut grooves The rock mass 520 remaining between the rocks 510 is fractured (S430). The cutting grooves 510 serve as fracture-free surfaces, and the remaining rocks 520 can easily be removed between the cutting grooves 510.

In the operation S300 of the water jet nozzle unit, the first nozzle head unit 310 may be operated so that the fluid and / or the abrasive material are supplied to the rock side from the first nozzle head unit 310. [ Next, the depth of the excitation generated by the first nozzle head part 310 is measured by the depth measuring part 410, and the second nozzle head part (not marked) is operated by the bypass part 350 . The depth of the excitation generated by the first nozzle head part 310 and the second nozzle head part can be measured again by the depth measuring part 410 and thus the shape of the generated excitation can be grasped.

Accordingly, the excavator drilling apparatus can be easily pivoted even in the steep section, as shown in FIG. 10, through the steps shown in FIGS. 8 and 9.

10: Cutter head part
11: Cutter bit
20: first body part
30: second body part
40:
100: water jet part
110:
120: Pressure regulator
130: load notification unit
200: abrasive input part
210: abrasive tank
220: pressure holding portion
230: abrasive measuring part
240:
300: Waterjet nozzle part
310: nozzle head
320: head protection portion
330:
340: Rotary joint part
350: Bypass section
400: cutter part
410: Depth measuring unit
420:
430: Rock cutter
440: Cutter moving part
500: ground
510: cutting groove
520: Remaining rock mass

Claims (16)

A rotatable first body part; And
And a second body part connected to the first body part and accommodating a water jet part provided with a flow rate generating part,
The first body portion may include:
An abrasive insert having an abrasive tank;
A water jet nozzle part connected to the water jet part and the abrasive charging part; And
And a cutter unit having a depth measuring unit and a cutter for rock,
Wherein the water jet nozzle unit includes a nozzle head unit formed on both sides of the first body unit, and the first body unit is rotated to generate the excavation by the water jet nozzle unit.
Drilling rig using waterjet.
The method according to claim 1,
Wherein the flow rate generator is connected to the nozzle head by a hydraulic tube,
The high-pressure fluid generated in the flow rate generator is transmitted to the nozzle head through the pressure pipe,
Wherein the hydraulic pipe is provided with a rotary joint so that the hydraulic pipe on the first body portion side is rotated while the rotation of the hydraulic pipe on the second body portion side is prevented.
Drilling rig using waterjet.
The method according to claim 1,
The abrasive insert may comprise: an abrasive tank for receiving an abrasive;
A pressure holding part connected to the abrasive tank to maintain a pressure in the abrasive tank;
An abrasive measuring unit for measuring an abrasive amount in the abrasive tank; And
And an amount adjusting unit for adjusting an amount of abrasive to be supplied to the water jet nozzle unit.
Drilling rig using waterjet.
The method of claim 3,
Wherein the target cutting depth is determined by the articulation angle between the first body part and the second body part and the size of the TBM.
Drilling rig using waterjet.
The method according to claim 1,
The abrasive insert may comprise: an abrasive tank for receiving an abrasive;
An abrasive measuring unit for measuring an abrasive amount in the abrasive tank; And
And an amount adjuster for adjusting the amount of abrasives to be supplied to the water jet nozzle by adjusting the pressure of the abrasive tank.
Drilling rig using waterjet.
The method according to claim 1,
The waterjet nozzle unit includes:
At least two nozzle heads;
A head protector for blocking the nozzle head from the outside;
A nozzle moving part connected to the nozzle head part; And
And a bypass portion configured to selectively transmit fluid through at least one of the at least two nozzle heads.
Drilling rig using waterjet.
The method according to claim 6,
Wherein the nozzle head portion is receivable in a receiving portion formed on both sides of the first body portion,
Wherein the head protecting portion is provided in the first body portion and slidably moves to open and close the receiving portion.
Drilling rig using waterjet.
8. The method of claim 7,
Characterized in that the nozzle head portion is accommodated in the accommodating portion when not in use and can be projected from the accommodating portion by the nozzle moving portion when used.
Drilling rig using waterjet.
The method according to claim 6,
The at least two nozzle head portions include a first nozzle head portion and a second nozzle head portion,
When the fluid is passed through the first nozzle head to complete the first water jetting operation, fluid is passed through the second nozzle head by the bypass unit to perform the second water jetting operation. doing,
Drilling rig using waterjet.
10. The method of claim 9,
Wherein the excitation generated in the primary waterjet generating operation and the excitation generated in the secondary waterjet generating operation are spaced from each other by a predetermined distance.
Drilling rig using waterjet.
10. The method of claim 9,
Wherein the first nozzle head portion and the second nozzle head portion are reciprocally movable inward and outward of the first body portion and reciprocally movable in the longitudinal direction of the first body portion.
Drilling rig using waterjet.
11. The method of claim 10,
Wherein the rock cutter between the excavation produced in the primary waterjet excavation producing operation and the excavation spaced apart from each other by a predetermined distance generated in the secondary waterjet excavating operation is broken by the rock cutter,
Drilling rig using waterjet.
The method according to claim 1,
Wherein the rock cutter is accommodated in a receiving portion provided on both sides of the first body portion and the rock cutter is reciprocally movable up and down and left and right connected to the cutter moving portion.
Drilling rig using waterjet.
A target cutting depth required in a steep section is input;
Adjusting an abrasive input amount based on the target cutting depth and adjusting a hydraulic pressure of the fluid;
The water jet nozzle portion is operated to advance the water jet cutting with the abrasive and the fluid;
Measuring the depth of the excavation produced by the waterjet cutting;
Comparing the depth of the generated excavation with the target depth of cut;
A step of judging whether a calligraphy is formed in a groove form; And
And when the concave and convex is formed by the continuous groove shape, the cutter part is operated.
Excavation method using waterjet.
15. The method of claim 14,
Wherein the waterjet nozzle unit includes a nozzle head formed on both sides of the first body part, and the first body part is rotated to generate the excavation by the waterjet nozzle unit.
Excavation method using waterjet.
15. The method of claim 14,
When the depth of the generated excavation is smaller than the target cutting depth,
Wherein the waterjet cutting process is performed until the depth of the generated excavation matches the target cutting depth.
Excavation method using waterjet.

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