KR102504213B1 - System and method for evaluating of horizontal directional drilling - Google Patents

Abstract

Disclosed are a system and a method for evaluating construction using an HDD method. The method for evaluating construction using an HDD method according to the present invention comprises: a base frame buried in a pre-planned construction path; a target part arranged on the base frame and consisting of a plurality of contact detection sensors; and a pressure transmission part arranged on the base frame to be disposed in front of the target part and becoming a target to be hit by a drill bit. The present embodiment allows the pressure transmission part and the target part, which are arranged on the base frame buried in the pre-planned construction path, to be hit by a drill bit, thereby allowing a construction position to be known in real time. Therefore, how accurately construction is performed to approximate the pre-planned path can be checked at an arbitrary position on the construction path, thereby evaluating the ability to construct a construction path between an entry work hole and an exit work hole, where HDD devices are installed, without deviation within a given time.

Description

Construction evaluation system and evaluation method of HDD construction method

The present invention relates to a HDD method, and more particularly, to a construction evaluation system of the HDD method capable of evaluating the ability to construct a construction path between an entry work area and an exit work area in which HDD equipment is installed without deviation within a given time period, and It is about the evaluation method.

In order for people to live together in a city, a lot of space is needed for roads, buildings, and parks. In addition, various types of utility pipes such as water supply, sewage, heat transport pipes for heating, electricity, and communication pipes are required, and these are processed or buried underground.

Since such utility pipes are essential, when planning a new city, utility pipes are designed to accommodate these utility pipes underground.

However, existing old cities do not have utility pipes in most cases, so utility pipes are installed in an overhead or underground way. Recently, while maintaining and redeveloping the existing old city center, efforts are being made to improve the surrounding environment by moving electrical and communication lines that have been messy with processing underground and burying them.

Methods for burying utility pipes underground include the open cut method (Trenching), in which the pipe is buried after excavating the ground to the depth of burial, and the method of making only the pipe entry and exit work holes and pushing them through the entry work holes. It can be classified as a trenchless method.

Construction cost (direct and indirect construction cost), pipe diameter, quantity, extension, and burial depth are important factors for determining the selection of such an installation method. In the case of utility pipe installation work, the investigation of obstructions (buried objects) is done using GPR (Ground Penetrating Radar), a widely used detection device, as a top priority in both the excavation method and the non-excavation method. Reflecting this, the buried route of the pipe is determined in advance.

In the case of installation by the conventional method of installing utility pipes, the ground is excavated to a certain depth, and after installing the pipes, a tape of a specific color is applied to warn that there is a pipe under each utility type to protect the pipe. It is installed at the top at a distance, covered with soil, and completed after compaction and restoration of road pavement.

In the case of installing utility pipes by the non-drilling method, the microtunneling method, the pipe jacking method, the pipe ramming method, the horizontal auger boring method, and the horizontal directional press-in method, the directional horizontal excavation method (Horizontal Directional Drilling, HDD) method.

Among them, the horizontally oriented press-in method installs equipment at the entry work area, connects drill pipes to each other to excavate a certain section, and the drill tip, which is the tip, reaches the exit work area. After removing the drill tip for pilot boring from the exit work area and installing a reamer to expand the boring diameter, connect the utility pipe to the rear end to move in the opposite direction to the pilot boring direction. will do

In other words, the connection of equipment and parts during pilot excavation is as follows. Arranged in order, the entry workpiece (manhole) → HDD excavation equipment (pushing, rotation) → drill rod (pipe) → drill tip → exit workpiece (manhole). This process is the pilot boring process. When the tip of the drill reaches the outlet, the connection sequence when constructing the utility pipe is changed as follows. It is connected in the order of exit work (manhole) → utility pipe (PE Pipe) → anti-twist connection device when rotating (Shackle) → reamner → drill pipe → HDD excavation equipment (pulling, rotation). The traveling direction moves from the exit work area to the entry work area. That is, it moves in the opposite direction to the pilot boring direction.

The composition of excavation equipment and related parts used in the horizontal press-in method is as follows. A drill tip for boring is installed at the tip of the HDD excavation equipment. Secure some space in the body of the drill tip and insert a signal generator (sonde). The signal generated by the signal generator can be received from the ground to check the current boring location and depth.

On the other hand, the most important factor for success in construction by applying the horizontal press-in method is the technology of drilling the boring path accurately and without error. Among the list of applicable construction methods, the biggest factor is the skill level of the person operating the HDD equipment. That is, the HDD operator must be able to perform construction without departing from a pre-determined construction path. In particular, in urban construction where many underground burials are installed, the skill of the equipment operator is more important to the success of the construction.

However, in the directional horizontal excavation method, since only the entry and exit workpieces are open cut, as shown in FIG. However, there is a problem that the deviation between the preplanned location and the actual construction location is confirmed only in the exit work area.

The foregoing technical configuration is a background technology for helping understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Korean Registered Patent Publication No. 10-2199353 (Silly Enterprise Co., Ltd., Hanbungjeon, Arueng Co., Ltd.) 2020. 12. 30.

Therefore, the technical problem to be achieved by the present invention is to provide a construction evaluation system and evaluation method of the HDD method that can evaluate the ability to construct the construction path between the entry and exit work zones installed with HDD equipment without deviation within a given time will be.

According to one aspect of the present invention, the base frame buried on a pre-planned construction path; a target portion provided on the base frame and made up of a plurality of contact detection sensors; And a construction evaluation system of the HDD method including a pressure transmission unit provided on the base frame so as to be disposed in front of the target unit and providing an excessive force with which the drill bit collides.

The base frame may be provided with a plurality of horizontal frames and a plurality of vertical frames to have a plurality of frame space parts, and the target part and the pressure transmission part may be provided in one frame space part among the plurality of frame space parts.

The target unit may be provided by arranging the plurality of touch sensors in a lattice form.

The plurality of touch detection sensors may include a tape switch sensor.

The plurality of touch detection sensors may include a ribbon switch.

일 수 있다.The construction accuracy evaluation index (d _N ) is,

can be

In addition, according to another aspect of the present invention, arranging the base frame on a pre-planned construction path; Mounting a target part and a pressure transmission part to the base frame; And evaluating the degree of approximation between the coordinates of the drill bit that sequentially matched the pressure transmission unit and the target unit and the coordinates of the assigned specific position. A construction evaluation method of the HDD method may be provided.

A plurality of frame space parts may be provided in the base frame, and the target part and the pressure transmitter may be variably disposed in a selected space part among the plurality of frame space parts.

The target unit may be provided by arranging the plurality of pressure sensors in a lattice form.

In the embodiments of the present invention, the real-time construction position can be known due to the drill bit striking the pressure transmission part and the target part provided in the base frame buried on the pre-planned construction route, so that the pre-planned position can be obtained with some accuracy at any point on the construction route. It is possible to evaluate the ability to construct the construction route between the entry work area and exit work area where the HDD equipment is installed without deviation within a given time because it can be confirmed whether the construction is close to the route.

In addition, it is possible to classify the equipment operator's proficiency, technician level, etc., and technician level classification is also possible.

Furthermore, it is possible to selectively mount the target unit and the pressure transmission unit in a selected frame space unit among a plurality of frame space units provided in the base frame, thereby increasing utilization.

1 is a diagram schematically showing a planned boring route and an actual construction route during HDD construction.
Figure 2 is a diagram schematically showing the main part of the construction evaluation system of the HDD method according to an embodiment of the present invention.
3 is a view schematically showing that a target is provided in the base frame shown in FIG. 2;
4 is a view schematically showing that a pressure transmitter is provided in front of the target shown in FIG. 3;
5 is a view schematically showing that a drill bit of an HDD equipment is in contact with the pressure transmission unit shown in FIG. 10 and a pressure sensor contacted among a plurality of pressure sensors is operated.
6 is a view schematically showing a location where a target is provided in a selected frame space among a plurality of frame spaces provided in a base frame according to the present embodiment.
7 is a diagram schematically showing that a drill bit strikes a pressure transmission unit and a plurality of pressure sensors are operated in the position where the drill bit hits the pressure transmission unit according to the present embodiment.
FIG. 8 is a diagram specifically illustrating (b) of FIG. 7 .
9 is a view schematically showing a target installation and evaluation method for evaluating accuracy during HDD construction by applying this embodiment.

Hereinafter, specific details for carrying out the present invention will be described based on examples with reference to the drawings. These embodiments are described in sufficient detail to enable one skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from each other but are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in one embodiment in another embodiment without departing from the spirit and scope of the invention. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description set forth below is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all equivalents as claimed by those claims. Like reference numbers in the drawings indicate the same or similar function throughout the various aspects.

In order to fully understand the present invention and its operational advantages and objectives achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like members.

Figure 2 is a view schematically showing the main part of the construction evaluation system of the HDD method according to an embodiment of the present invention, Figure 3 is a view schematically showing that the target is provided in the base frame shown in Figure 2, Figure 4 is a diagram schematically showing that the pressure transmission unit is provided in front of the target shown in FIG. 3, and FIG. 5 is a pressure transmission unit shown in FIG. It is a diagram schematically showing that the pressure sensor is operated.

In addition, Figure 6 is a view schematically showing the position where the target is provided in the frame space selected from among the plurality of frame spaces provided in the base frame of the present embodiment, and Figure 7 is the operation diagram of the present embodiment, the drill bit hits the pressure transmission unit It is a diagram schematically showing that a plurality of pressure sensors at the hit position are operated, FIG. 8 is a diagram specifically showing FIG. 7 (b), and FIG. It is a drawing schematically showing the target installation and evaluation method for evaluation.

As shown in these drawings, the construction evaluation system of the HDD method according to the present embodiment is provided in the base frame 10 buried on a pre-planned construction path, and the base frame 10, with a plurality of contact detection sensors. It has a target part 20 formed and a pressure transmission part 30 provided on the base frame 10 so as to be disposed in front of the target part 20 and providing an excessive force with which the drill bit 100 collides.

The base frame 10 may be provided in plurality on a pre-planned construction route.

In this embodiment, as shown in FIG. 2 , the base frame 10 may be provided by combining a plurality of horizontal frames 11 and a plurality of vertical frames 12 .

In addition, as shown in FIG. 2 , a plurality of frame space parts 13 may be provided in the base frame 10 in this embodiment. This embodiment has the advantage of increasing utilization by selectively changing and installing the target part 20 and the pressure transmitting part 30 in the frame space part 13 selected from among the plurality of frame space parts 13. In this embodiment, the plurality of frame space parts 13 may be provided, for example, four.

Furthermore, in this embodiment, as shown in FIG. 6, the installation position of the target part 20 is set to four corner points (L, H), (L + N, H), (L, H + M), ( L + N, H + M) as a reference point, the target part 20 is fixed at an arbitrary depth and at an arbitrary left and right position through fixing the depth, fixing position, and left and right position of the target part 20 in the base frame 10 can do.

In this embodiment, the base frame 10 may be made of a metal or non-metal material.

As shown in FIG. 3, the target portion 20 is provided in the selected frame space portion 13 of the base frame 10 and is positioned at a specific location by the drill bit 100 hitting the pressure transmission portion 30 It is possible to know the position of the drill bit 100 that is operated and currently being constructed. Due to this, the construction location can be known in real time, and it is possible to check how accurately the construction is performed at an arbitrary point on the construction route and how close it is to the pre-planned route.

In this embodiment, as shown in FIG. 3 , the target unit 20 may be provided by arranging a plurality of contact detection sensors in a lattice form. In this case, when the drill constructing the target part 20, that is, the drill bit 100 passes through, as shown in FIG. 5, the contact detection sensors of the penetration area, that is, the horizontal contact sensors X4 and X5, The voltage applied to the vertical contact detection sensors Y4 and Y5 can be checked. That is, a voltage of 12 volts applied at the above-mentioned position is output. The voltages of the rest of the touch detection sensors are all “0” volts. This is possible because the contact detection sensors used in this embodiment are all individually independent sensors and are on-off sensors that operate only when a pressure of a certain size or more is applied to each sensor.

Also, in this embodiment, the plurality of pressure sensors 21 may include a tape switch sensor or a ribbon switch. The tape switch sensor is a sensor in which two copper plates are spaced apart at a certain distance vertically, and the applied voltage passes through when pressure is applied. When the sensors are arranged as shown in FIG. 5, when the drill bit 100 or the drill rod passes through the target plate, the drill bit ( 100) or the location of the drill rod can be checked. The ribbon switch is a switch that operates when the surface of the operating area is bent or pressed in any direction, and can be operated in the same manner as the above-described tape switch sensor.

Furthermore, in this embodiment, there is no restriction on the length X length of the target part 20 because there is no particular restriction on the length of the plurality of pressure monitoring sensors, for example, the tape switch sensor.

And, as shown in FIG. 6, in this embodiment, starting from the origin (0,0) of the upper left corner of the base frame 10, the change in the location coordinates of the boring target according to where the target part 20 is located It can be evaluated in a variety of ways.

In this embodiment, the HDD construction accuracy evaluation index may be determined through the calculation of the distance deviation as follows.

When a voltage of 12 volts is applied to the individual pressure sensors 21 constituting the target part 20, X5 and X6 in the horizontal direction and Y4 in the vertical direction, which are sensors that receive pressure when the drill bit 100 passes The applied voltage of 12 volt is output from the Y5 and Y6 sensors. The voltages of the rest of the sensors are all “0”. This is possible because, as described above, the pressure sensing sensors 21 of the present embodiment are individually independent sensors and are on-off sensors that operate only when a pressure of a certain level or more is applied to each sensor.

In this embodiment, the depth interval and the left-right interval of the pressure sensor 21 may be as follows.

Depth spacing between sensors = vertical length of electronic target board / (number of vertical sensors - 1)

Left and right distance between sensors = length of electronic target board / (number of horizontal sensors - 1)

As shown in FIG. 7, the pressure transmission unit 30 is disposed in front of the target unit 20, and when the drill bit 100 or the drill rod strikes, the central portion, as shown in (b) of FIG. Likewise, both ends may fall to the target part 20 by being bent. As a result, there is an advantage in that the error range in which the plurality of pressure sensors 21 are operated can be reduced while the hitting range of the target part 20 is widened.

In this embodiment, the pressure transmission unit 30 may be provided in the form of a film.

In addition, in this embodiment, the pressure transmission unit 30 may include all known materials that are materials through which the drill bit 100 or the drill rod can penetrate.

On the other hand, in this embodiment, as shown in FIG. 9, the electronic target of this embodiment is installed perpendicular to the pre-planned construction path. Those who practice are given location information of the target, which is an arbitrary point on a pre-planned construction route, and the location of the drill bit 100 or drill rod passed through the actual boring construction process is displayed on the electronic target as shown in FIG. displayed Here, the target coordinates are the true value coordinates that the operator practicing the HDD equipment must pass, and it is possible to modify and present them each time by the evaluation supervisor.

The construction evaluation method of the HDD method according to this embodiment includes the steps of arranging the base frame 10 on a pre-planned construction path, and mounting the target part 20 and the pressure transmission part 30 on the base frame 10 and evaluating the degree of approximation between the coordinates of the drill bit 100 in which the pressure transmission unit 30 and the target unit 20 are sequentially aligned and the coordinates of the assigned specific position.

In this embodiment, the target part 20 and the pressure transmitter 30 may be variably disposed in a selected space part among the plurality of frame space parts 13 .

In addition, in this embodiment, by installing a position sensor on the base frame 10, the installation position of the base frame 10 can be easily checked from the ground.

As described above, in this embodiment, the pressure transmission part and the target part provided in the base frame buried on the pre-planned construction route are hit by the drill bit, so that the real-time construction location can be known, so that at any point on the construction route, to some extent It is possible to evaluate the ability to construct the construction route between the entry work area where the HDD equipment is installed and the exit work area without deviation within a given time because it can be confirmed that the construction is performed accurately and closely to the pre-planned route. In addition, it is possible to classify the equipment operator's proficiency, technician level, etc., and technician level classification is also possible. Furthermore, it is possible to selectively mount the target unit and the pressure transmission unit in a selected frame space unit among a plurality of frame space units provided in the base frame, thereby increasing utilization.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations fall within the scope of the claims of the present invention.

10: base frame 11: horizontal frame
12: vertical frame 13: frame space
20: target part 21: pressure detection sensor
30: pressure transmission unit 100: drill bit

Claims (9)

A base frame buried on a pre-planned construction route;
a target portion provided on the base frame and made up of a plurality of contact detection sensors; and
A pressure transmitter provided on the base frame so as to be disposed in front of the target and providing an excessive force with which the drill bit collides,
The base frame is provided with a plurality of horizontal frames and a plurality of vertical frames and has a plurality of frame spaces,
The target part and the pressure transmission part are provided in one frame space part of the plurality of frame space parts, the construction evaluation system of the HDD method. delete The method of claim 1,
The target part is a construction evaluation system of the HDD method provided by arranging the plurality of contact detection sensors in a grid form. The method of claim 1,
The plurality of contact detection sensors are construction evaluation systems of the HDD method including a tape switch sensor. The method of claim 1,
The plurality of contact detection sensors are construction evaluation systems of the HDD method including a ribbon switch. The method of claim 1,
The construction accuracy evaluation index (d _N ) is,

A construction evaluation system of the in-HDD method. Placing the base frame on a pre-planned construction path;
Mounting a target part and a pressure transmission part to the base frame; and
Evaluating the degree of approximation between the coordinates of the drill bit sequentially aligned with the pressure transmission unit and the target unit and the coordinates of the assigned specific position,
The base frame is provided with a plurality of frame spaces,
The construction evaluation method of the HDD method in which the target part and the pressure transmission part are variably disposed in a selected space part among the plurality of frame space parts. delete The method of claim 7,
The construction evaluation method of the HDD method in which the target part is provided by arranging the plurality of pressure sensors in a grid form.

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