WO2023167383A1

WO2023167383A1 - Multi-purpose total inspection device and steel pipe multistage grouting tunnel reinforcement digital construction method using same

Info

Publication number: WO2023167383A1
Application number: PCT/KR2022/013668
Authority: WO
Inventors: 정순국; 원희자
Original assignee: 강산기술단 (주); 인프라혁신 주식회사
Priority date: 2022-03-02
Filing date: 2022-09-14
Publication date: 2023-09-07
Also published as: KR102433682B1

Abstract

The multi-purpose total inspection device of the present invention is a multi-purpose total inspection device for preliminary inspection of a bored hole (A) bored for steel pipe multistage grouting tunnel reinforcement, and comprises: a cylindrical inspection rod (10) introduced into a bored hole (A), an upper finish cap (11) being installed at the upper end of the cylindrical inspection rod (10), the lower end thereof being waterproof, and the cylindrical inspection rod (10) having an inner space portion; an inclination sensor (20) installed inside the inspection rod (10) to measure the inclination angles of the upward, downward, leftward, and rightward inclination angles of the bored hole (A); a probe camera (30) installed at the lower end of the inspection rod (10) to photograph the inside of the bored hole (A); a groundwater detection sensor (40) installed at the lower end of the inspection rod (10) to identify groundwater leakage in the bored hole (A); a depth measurement device (50) for measuring the depth of the bored hole (A) through the length of movement of a depth measurement cable which is drawn concurrently with uplifting the inspection rod (10), to which the depth measurement cable is fixed while being wound at the entrance side of the bored hole (A); a controller (60) electrically connected to each of the inclination sensor (20), the probe camera (20), the groundwater detection sensor (40), and the depth measuring device (50) to receive each piece of measured information; and a monitor device (70) connected to the controller (60) so as to display each piece of information transmitted from the controller (60).

Description

Multi-purpose total inspection device and steel pipe multi-stage grouting tunnel reinforcement digital construction method using it

The present invention relates to a multi-purpose total detection device and a digital construction method for reinforcing a steel pipe multi-stage grouting tunnel using the same. Check whether the drilling hole is being drilled according to the planned design specifications by individually measuring the down, left, and right angles of inclination, the state of the drilling hole's internal image, groundwater runoff, drilling depth, the coordinates of the drilling hole's entrance and underground location, etc. for each drilling hole individually at once. and the change of overlapping length of steel pipe according to the drilling angle, the underground coordinate position of whether the steel pipe is parallel to the direction of travel, and whether there is no obstacle to the tunnel arching effect, etc. Adjustment of steel pipe diameter (from small diameter to medium diameter or large diameter), adjustment of up, down, left, and right by the steel pipe inclination according to the stratum of the drilling hole, the tip of the drilling hole with good stratum For the part, the gap between the partition plates inside the steel pipe is widened, and the gap between the partition plates is narrowed in the part where the stratum at the entrance is not good. It relates to a multi-purpose total detection device that enables stable and smooth injection of grout material into a drilled hole and a digital construction method for steel pipe multi-stage tunnel reinforcement using the same.

In the steel pipe reinforcement type grouting methods used as part of the tunnel excavation auxiliary method so far, drilling holes are formed at the top before tunnel excavation, and then several perforated steel pipes are inserted into the steel pipe itself to increase the shear strength (z) of the ground. As a method of injecting grouting to obtain the tunnel arching effect, it is a multi-step grouting method in which a package that can be moved inside the steel pipe is used to inject the package in several steps (usually 4 steps, multiple steps) while taking the package out from the tip of the drilled hole. The steel pipe multi-stage grouting method and the steel pipe simultaneous grouting method in which grouting is injected simultaneously with 4 pumps by installing 4 equally dividing partitions inside the steel pipe from the beginning are being implemented.

In this process, the steel pipe multi-stage grouting method requires filling the space between the perforated hole (diameter D = 105 ~ 127mm) and the steel pipe (diameter D = 65 ~ 114mm) bore space with bentonite, etc. Since grouting is injected before the downtime due to the mixing of space-filling bentonite or the curing time required, the grout material does not penetrate properly into the cracks in the ground, resulting in poor construction.

On the other hand, the steel pipe grouting method is a method of caulking only the entrance between the drilling hole and the steel pipe bore space, leaving the rest of the space as it is, and simultaneously increasing the pressure of 4 pumps. It is a method that pumps four pumps at the same time so that the water pressure spreads over the entire section.

However, in the steel pipe grouting method, the tip layer at the end of the drilled hole is better than the entrance and the entrance side may be a poor layer. Arching effect due to can be reduced.

And as shown in FIG. 1, maintaining the upper, lower, left, and right angles among the drilling angles reduces the overlapping length of the steel pipes and the close spacing between the steel pipes to exhibit the tunnel arching effect, but the drilling left and right inclination angles are the entrance of the steel pipe. Since the coordinates of the tunnel and underground coordinates can contact each other, this also depends on tunnel stability, so an accurate drilling angle is often considered important in the drilling hole formation process. If the perforation angle of the perforation hole is large, the overlap length of the steel pipe is reduced, and if the perforation angle is small, the overlap length of the steel pipe is increased.

The typical steel pipe multi-stage grouting method and the steel pipe simultaneous grouting method are both methods, and the steel pipe is formed from the drilling hole formation process when drilling, such as the stratum of the drilling hole, the upper, lower, left, right drilling inclination angle of the drilling hole, the groundwater level, depth, and the overlapping part of the steel pipe. Before insertion, the state of the drilling hole should be inspected in advance to check whether it meets the design standards and specifications presented at the time of the original design. However, there is no suitable method at present, so only the drilling angle of the drilling hole is a setting that depends on skilled workers, so some construction processes There were frequent cases of poor construction, such as the collapse of the tunnel ceiling, which was reinforced in .

The present invention, in order to solve the above problems, in the process of forming drilled holes for steel pipe multi-stage tunnel reinforcement, the accurate upper, lower, left, and right inclination angles of the drilled holes and the state of the internal stratum image, groundwater leakage, drilling depth, drilling In order to measure the location coordinates of the hole underground individually at once for each drilling hole, an inclination sensor, a probe camera, a groundwater detection sensor, and a depth measuring device are installed on the inspection rod inserted into the drilling hole from the construction stage of the drilling hole, so that the internal strata of the drilling hole The purpose is to provide a multi-purpose total detection device that detects the status, angle of inclination, groundwater leakage, etc., and receives the detected information by digitizing it, so that managers and supervisors can accurately check the state of the drilling hole with the naked eye in the monitor device.

In addition, the present invention accurately visually checks the perforation state of the perforation hole detected through the multi-purpose total inspection device to accurately perforate the perforation hole according to the design standard specifications at the tunnel reinforcement construction site, and improves the overlapping range between the steel pipe and the steel pipe to be constructed and the steel pipe After that, it is possible to accurately check the overlapping of the bulbs of the steel pipe, and adjust the slope of the steel pipe up, down, left, and right according to the stratum of the drilling hole. For areas with poor stratum, it is possible to properly adjust the partition plate by visually checking and recording according to the stratum at the time of the original design and at the actual construction site, such as narrowing the gap of the partition plate, so that the grout material can be injected stably and smoothly into the drilling hole. The purpose is to provide a digital construction method for steel pipe multi-stage grouting tunnel reinforcement using a multi-purpose total inspection device.

The multi-purpose total detecting device of the present invention is a multi-purpose total detecting device for pre-detection of a drilled hole (A) for steel pipe multi-stage grouting tunnel reinforcement,

A cylindrical inspection rod 10 that is inserted into the drilling hole (A), has an upper finishing cap 11 installed at the top, has a waterproof treatment at the lower end, and has an internal space;

An inclination sensor 20 installed inside the inspection rod 10 to measure the upper, lower, left, right, and inclination angles of the perforation hole A;

A detection camera 30 installed at the lower end of the detection rod 10 to photograph the inside of the perforation hole A;

A groundwater detection sensor 40 installed at the lower end of the detection bar 10 to check groundwater outflow in the perforation hole A;

The depth measuring cable wound at the entrance side of the drilling hole (A) is fixed to the detecting rod 10 and lifts the detecting rod 10 through the movement length of the depth measuring cable drawn in at the same time as the drilling hole (A). ) Depth measuring device 50 for measuring the depth;

a controller 60 electrically connected to each of the inclination sensor 20, the detection camera 20, the groundwater detection sensor 40, and the depth measuring device 50 to receive each measured information;

It is characterized in that it is composed of a monitoring device 70 connected to the controller 60 and displaying each information transmitted from the controller 60.

The present invention accurately detects the perforation state of the perforation hole, such as the upper, lower, left, and right angles of inclination of the perforation hole, the state of the ground image inside the perforation hole, the groundwater outflow, the perforation depth, the coordinates of the perforation hole entrance and the location in the ground, and converts the detected information to digital There is an effect of allowing managers, supervisors, etc. to visually check through IT techniques, etc., so that the drilling hole can be drilled according to the design standard specifications or within the allowable error range.

In addition, by accurately detecting the image of the internal stratum state of the perforated hole for steel pipe multi-stage grouting tunnel reinforcement construction, top, bottom, left, right inclination angle, groundwater runoff, drilling depth, location coordinates, etc. in advance, and monitoring the detected information, It is possible to check whether the tunnel is drilled in parallel with the direction of progress of the tunnel, and it is possible to accurately check whether the overlapping range between the steel pipe and the steel pipe to be constructed is improved, and whether or not the bulbs overlap between the steel pipe and the steel pipe after the steel pipe are overlapped. The confirmed construction has the effect of ensuring the stability of tunnel reinforcement due to the need for an increase in the extension length due to the angle and the expansion of the guaranteed extension, and enabling immediate and stable response to stratum changes such as shortening of the construction period by shortening the tunnel excavation time.

In addition, by using a multi-purpose total detection device, the stratum state inside the drilling hole detected is analyzed, and based on the analyzed information, the stratum is good and the stratum is weak, and the gap between the partitions inside the steel pipe is adjusted. It has the effect of increasing the workability of tunnel reinforcement because the pressure is controlled and it is possible to inject the grout material evenly and smoothly into the drilling hole.

1 is an exemplary view explaining the overlapping length of a steel pipe in a drilling hole drilled at an abnormal angle during tunnel excavation.

Figure 2 is a view showing the installation state of the multi-purpose total detecting device according to the present invention

3 is a detailed view of a multi-purpose total detection device according to the present invention

Figure 4 is a detailed view of the depth measuring device of the multi-purpose total detecting device according to the present invention

5 is a view showing a state in which a steel pipe for multi-stage grouting according to the present invention is inserted into a drilling hole;

Figure 6 is an explanatory diagram illustrating the spacing adjustment of the partition plate according to the present invention

7 is a flow chart of a digital construction method for steel pipe multi-stage grouting tunnel reinforcement using a multi-purpose total detection device according to the present invention.

It is characterized in that it consists of a monitor device 70 connected to the controller 60 and displaying each information transmitted from the controller 60.

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

As shown in FIGS. 2 to 4, the multi-purpose total detection device of the present invention is the upper, lower, left, and right inclination angle of the perforation hole (A) drilled for reinforcement of the steel pipe multi-stage grouting tunnel, the internal state of the strata of the perforation hole, and the ground water After confirming the outflow state and drilling depth, and accurately detecting the drilling state of the drilling hole in advance, such as drilling the drilling hole parallel to the tunnel progress direction, the inspection rod 10, the inclination sensor 20, It consists of a detection camera 30, a groundwater detection sensor 40, a depth measuring device 50, a controller 60, and a monitoring device 70.

The inspection rod 10 has a cylindrical shape with an inner space and is made of aluminum or SUS material without corrosion or rust. Two through-holes are formed so that the probe camera 30 and the ground water sensor 40 pass through, and the through-hole through which the probe camera 30 and the ground water sensor 40 pass is waterproofed with silicon, etc., so that foreign substances or ground water do not enter. prevent ingress.

The inclination sensor 20 is installed in the inner space of the detection bar 10 and is configured to measure the upper, lower, left, and right inclination angles of the perforation hole A.

The inclination sensor 20 is a semiconductor-type MEMS type sensor including a gyro sensor and is fixedly installed in the inner space of the detection rod 10, and is drilled through a hole (A) together with the detection rod 10. ), and the inclination value can be measured from the formation process of the drilling hole (A) by the displacement of the 3 axes of X, Y, and Z, but the method of obtaining the inclination value using the gyro sensor is commercialized, so a detailed description of this omit

The detection camera 30 is installed through the lower end of the detection rod 10 and is inserted into the drilling hole A along with the detection rod 10 to photograph the inside of the drilling hole A. The internal state of (A) can be provided to the manager as a video.

The detection camera 30 includes a typical camera configuration including a lens, lighting, memory, and the like.

The groundwater detection sensor 40 is installed through the lower end of the detection rod 10 at one side of the detection camera 30 and has a rod shape having a certain length and is drilled through a hole (A) together with the detection rod 10. After being put into the inside, if there is groundwater in the drilling hole (A), it detects the groundwater and makes a notification sound through the speaker installed in the monitor device 70, and the depth measuring device 50 allows the groundwater to flow through the drilling hole (A). It allows you to measure at what depth it exists.

The surroundings of the detection camera 30 and the groundwater detection sensor 40 installed through the detection rod 10 are waterproofed by finishing with silicon or the like so that foreign substances or groundwater cannot flow into the detection rod 10. do.

The inclination sensor 20, the detection camera 30, and the groundwater detection sensor 40 are electrically connected to the controller 60 through the coaxial cable 12 when each communication cable passes through the upper part of the detection rod 10. Connected.

The coaxial cable 12 is formed to a length that is not restricted when the inspection rod 10 is inserted to the end of the perforated hole A.

As shown in FIG. 4, the depth measuring device 50 is fixed to the inspection bar 10 and lifts the inspection bar 10 toward the inlet side of the drilling hole A and at the same time the depth of the drilling hole A. A depth measuring cable 51 for measuring the depth of the drilled hole A and a depth measuring cable 51 installed on the ground having an end fixed to the detecting rod 10 so as to automatically measure the A depth measuring body 52 provided with a movement detection unit (not shown) for supporting and detecting a moving distance of the depth measuring cable 51, and stacked up and down in a vertical direction on one surface of the depth measuring body 52, A handle 51 is provided on one of the two rollers 53 for moving the depth measuring cable 51 forward and backward, and a depth measuring cable 51 is installed at the rear of the depth measuring cable 51. A transmission cable 56 connected to the received take-up drum 55 and the depth measurement body 51 and transmitting the movement length of the depth measurement cable 51 sensed by the movement detection unit to the controller 60. It consists of

The depth measuring cable 51 is in the form of a wire made of a metal material, and its end passes through the upper portion of the detecting rod 10 and is installed to be fixed to the inner space, so that when the detecting rod 10 is lifted, the detecting rod 10 is separated. so that it can be lifted smoothly without being damaged.

The depth measuring body 52 supports the depth measuring cable 51 in a vertical plate shape and measures the moving length of the depth measuring cable 51 passing between the two rollers 53 by a movement detecting unit (not shown). ), and the measured moving length of the depth measuring cable 51 is transmitted to the controller 60.

That is, after the depth measurement cable 51 is pulled out and the detection rod 10 is inserted to the end of the drilling hole A, when the input is completed, the depth measurement cable ( 51) is set to "0" to determine the length measurement start point, and then the depth measurement cable 51 is wound on the ground, and the point at which the inspection bar 10 is lifted from the drilling hole A is set as the length measurement end point. By determining the length of movement of the depth measuring cable 51, the drilling depth of the drilling hole A can be detected.

The depth measuring cable 51 measures the depth of the drilling hole A while lifting the detecting rod 10 from the drilling hole A for accurate measurement, but uses the detecting rod 10 to detect groundwater leakage. The depth of the drilling hole (A) may be checked by measuring the moving length of the depth measuring cable 51 while being inserted into the drilling hole (A).

The controller 60 is electrically connected to the inclination sensor 20, the detection camera 30, the groundwater detection sensor 40, and the depth measuring device 50, and the image of the drilling hole A measured in each configuration, It performs a function of transmitting information data to the monitoring device 70 by receiving information on the lower, left, and right angles of inclination, the strata image taken from the inside, groundwater leakage, and drilling depth.

The monitor device 70 is a smart phone, a tablet PC, a laptop computer, etc., in which total detection information software, a dedicated program, is installed so that it can be used at a steel pipe multi-stage grouting tunnel reinforcement site.

The monitor device 70 receives the information data transmitted from the controller 60 and uses the total detection information software to accurately detect the perforation state from the formation process of the perforation hole A, such as the angle of inclination, groundwater leakage, Information data on drilling depth and location coordinates can be digitized or extracted as 2D plane data such as CAD, or 3D images can be texture-mapped to visualize and create a 3D data model.

The method of extracting information data as 2D plane data or generating a 3D data model through the total detection information software is a technology that has already been commercialized, and detailed technical descriptions will be omitted.

In the multi-purpose total detection device configured as described above, a position coordinate sensor 80 is further installed, and the position coordinate sensor 80 is installed inside the detection bar 10 so that the position of the drilling hole A is received from the GPS. and the received position is immediately stored in the monitor device 70, so that the location coordinate sensor measures the entrance side of the drilling hole (A) and the position of the drilled end so that the drilling direction of the drilling hole (A) proceeds through the tunnel It is possible to check whether the construction is performed parallel to the direction, and it is possible to accurately and conveniently check the construction positions of the steel pipe constructed in the drilling hole (A) afterwards.

As described above, the multi-purpose total detection device composed of the detection rod 10, the inclination sensor 20, the detection camera 30, the groundwater detection sensor 40, the depth measurement device 50, and the controller 60 is a steel pipe multi-stage grouting tunnel. Accurately detect in advance the image of the internal stratum state of the perforated hole (A), top, bottom, left, right inclination angle, groundwater runoff, drilling depth, location coordinates, etc. of the drilled hole (A) for reinforcement construction, and monitor the detected information to It is possible to check whether A) is perforated in parallel with the direction of tunnel progress, and it is possible to accurately check the overlapping range between the steel pipe and the steel pipe to be constructed, and whether or not the bulb overlaps between the steel pipe and the later steel pipe, etc., and the exact angle construction and location of the steel pipe. Construction with confirmed coordinates makes it possible to respond immediately and stably to stratum changes such as shortening the construction period by securing the stability of tunnel reinforcement due to the unnecessary increase in the extension length by angle and the expansion of the guaranteed extension, and shortening the tunnel excavation time.

On the other hand, the multi-purpose total detection device has been described as a configuration for inducing accurate drilling of the drilling hole (A) and detecting the drilling hole in the process of forming the drilling hole (A) for steel pipe multi-stage grouting tunnel reinforcement construction, but is limited to this. It can be used for the formation of drilling holes for nail, anchor, pile construction, etc., or for various inspections of boreholes during soil investigation, and also for inspection of underground facilities such as water supply pipes, sewer pipes, and rainwater pipes buried in the ground. It is also a technique that can be widely used.

Hereinafter, the multi-purpose total inspection device of the present invention will explain the construction method by applying the digital method to steel pipe multi-stage grouting tunnel reinforcement that can be grafted and combined regardless of any specific method or form.

1) Drilling hole formation step (S10)

It is grafted and combined with excavation equipment that can be applied regardless of any general method or specific method type, and drills a drilling hole (A) for multi-stage grouting construction of steel pipes in the front of the tunnel excavation section.

2) Multi-purpose total detection device input step (S20)

At the inlet side of the drilling hole (A), the inspection rod 10 equipped with the inclination sensor 20, the detection camera 30, the groundwater detection sensor 40, and the depth measuring device 50 is inserted into the drilling hole (A). put in

3) Measuring the inside of the drilled hole (S30)

The depth measuring cable 51 of the depth measuring device 50 is gradually withdrawn so that the detection rod 10 is gradually inserted from the entrance to the end of the drilling hole A, so that the inclination sensor 20 The upper, lower, left, and right inclination angles of (A) are measured, and the inner stratum of the drilling hole is taken as an image by the detection camera 30, and the underground water detection sensor 40 checks whether groundwater flows inside the drilling hole. If leakage of groundwater is confirmed by detecting whether or not there is leakage of groundwater, the leakage of groundwater is notified and the location of the leakage of groundwater is measured.

4) Drilling hole depth measurement step (S40)

When the detection rod 10 is inserted to the end of the drilling hole (A), the depth measurement cable 51 of the depth measuring device 50 is wound on the ground to lift the detection rod 10 and the depth measurement cable When lifting (51), measure the moving length to measure the depth of the drilling hole (A).

5) Drilling hole monitoring step (S50)

From the drilling hole formation process, each measurement information on the upper, lower, left, and right inclination angles of the drilling hole (A), internal layer image, groundwater outflow, and drilling depth of the drilling hole is monitored by a manager, supervisor, etc. Check with 2D data or 3D data.

6) Inspection rod collection step (S60)

The detection rod 10 to which the inclination sensor 20, the detection camera 30, the groundwater detection sensor 40, and the depth measuring device 50 are installed is retrieved from the drilling hole A.

On the other hand, based on the measurement information of the drilling hole (A), it is checked whether the drilling hole (A) is drilled according to the design standard specification, and if the drilling hole (A) is not satisfied, the drilling hole (A) is re-excavated.

7) Steel pipe preparation step (S70)

As shown in FIG. 5, a plurality of spray holes 900 are formed on the outer circumferential surface in a cylindrical shape, and a plurality of partition plates 91 are arranged at regular intervals inside and partitioned by each partition plate 91 to form a plurality of partition spaces. The steel pipe 90 for multi-stage grouting is formed inside and a plurality of injection pipes 92 are installed in the front and rear directions of each partition plate 91 so that the outlet of the injection pipe 92 is located in each compartment space. Prepare.

8) Partition plate spacing adjustment step (S80)

After detecting the inside of the perforated hole (A) using the multi-purpose total detection device, each partition plate inside the steel pipe 90 ( 91) to adjust the interval.

When the grout material is injected into the steel pipe 10, the injection pressure of the grout material should be different according to the state of the ground layer due to the internal soil of the drilling hole (A), underground water leakage, etc. In many cases, the ground is better than the inlet side, and the inlet side is often a poor stratum, and in the case of ground water flowing out due to cracks, etc., the ground is weak. As shown in FIG. The gap between the partition plate 91 inside the steel pipe 90 is narrowed to increase the pressure, and when the ground is good, the injection pressure of the grout material is relatively weaker than where the ground is weak. The injection pressure of the grout material is controlled by the partition plate 91 adjusted according to the internal ground condition of the drilling hole (A) by widening the gap, thereby enabling even and smooth injection of the grout material into the drilling hole (A).

9) Steel pipe insertion step (S90)

The steel pipe 90 with the distances of the partition plate 91 adjusted is inserted into the drilled hole A, and caulking 93 is performed at the inlet of the steel pipe 10 to seal the inlet of the steel pipe 10.

10) Grout material injection step (S100)

A grout injection pump is connected to each injection pipe 92 of the steel pipe 10, and each grout pump is simultaneously operated so that the grout material is simultaneously pressure-injected into each partition space before and after each partition plate 91, After passing through each injection hole 900, it is quickly injected into the drilling hole A, and the injection of the grout material is completed by checking the pressure inside the steel pipe 90.

11) Post drilling hole formation step (S110)

The post-drilling hole (A) is drilled by referring to information such as the internal stratum and inclination angle of the pre-drilled drilling hole (A) up to the excavated cross section of the ground scheduled to be excavated.

12) Repeating the above steps (S111)

Using a multi-purpose total detection device, check the internal measurement information of the post-drilled hole (A), prepare the steel pipe (90), adjust the spacing of the partition plate (91) and insert the drilled hole (A) of the steel pipe (90), The injection work is repeated to complete the steel pipe multi-stage grouting tunnel reinforcement digital construction work.

On the other hand, although the steel pipe multi-stage grouting tunnel reinforcement digital construction method using the multi-purpose total detection device of the present invention has been described in each step, the construction method of the present invention is a multi-purpose total inspection in the steps of the steel pipe multi-stage grouting tunnel reinforcement construction method that is normally performed. It is a digital construction method for steel pipe multi-stage grouting tunnel reinforcement using a multi-purpose total inspection device that can demonstrate the effect of being grafted and combined with a new new technology method regardless of any specific method, including the step of using the device and the step of adjusting the spacing of the partition plate. , In addition to the construction steps described above, it is preferable to be interpreted as including all the steps of the commonly practiced multi-stage grouting method for steel pipes.

As described above, the present specification and drawings have been posted on preferred embodiments of the present invention, and although specific terms have been used, they are only used in a general sense to easily explain the technical content of the present invention and help understanding of the present invention. However, it is not intended to limit the scope of the present invention. It is obvious to those skilled in the art that other modified examples based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

Claims

In the multi-purpose total detection device for preliminary detection of drilled holes (A) drilled for steel pipe multi-stage grouting tunnel reinforcement,

A cylindrical inspection rod 10 that is inserted into the drilling hole (A), has an upper finishing cap 11 installed at the top, has a waterproof treatment at the lower end, and has an internal space;

An inclination sensor 20 installed inside the inspection rod 10 to measure the upper, lower, left, right, and inclination angles of the perforation hole A;

A detection camera 30 installed at the lower end of the detection rod 10 to photograph the inside of the perforation hole A;

A groundwater detection sensor 40 installed at the lower end of the detection bar 10 to check groundwater outflow in the perforation hole A;

The depth measuring cable wound at the entrance side of the drilling hole (A) is fixed to the detecting rod 10 and lifts the detecting rod 10 through the movement length of the depth measuring cable drawn in at the same time as the drilling hole (A). ) Depth measuring device 50 for measuring the depth;

a controller 60 electrically connected to each of the inclination sensor 20, the detection camera 20, the groundwater detection sensor 40, and the depth measuring device 50 to receive each measured information;

It is connected to the controller 60 and includes a monitor device 70 indicating each information transmitted from the controller 60,

The depth measuring device 50 includes a depth measuring cable 51 having an end fixed to the detecting rod 10 and measuring the depth of the drilling hole A;

a depth measuring body 52 installed on the ground to support the depth measuring cable 51 and having a movement detecting unit installed thereon to detect a moving distance of the depth measuring cable 51;

two rollers (53) stacked on one surface of the depth measuring body (52) in a vertical direction and having a handle (54) on one of them to move the depth measuring cable (51);

A winding drum (55) installed behind the depth measuring cable (51) and accommodating the depth measuring cable (51);

It is composed of a transmission cable 56 connected to the depth measuring body 52 and transmitting the moving length of the depth measuring cable 51 detected by the sensor to the controller 60,

Although the lower end of the detection bar 10 is blocked, two through holes are formed through which the detection camera 30 and the ground water sensor 40 pass, and the through hole through which the detection camera 30 and the ground water sensor 40 pass. It is waterproofed with silicon and formed to prevent foreign matter or groundwater from entering the inside,

The inclination sensor 20 is formed of a semiconductor type MEMS type sensor including a gyro sensor,

The detection camera 30 is formed to photograph the inside of the drilling hole (A) to provide the manager with an image of the internal state of the drilling hole (A),

The groundwater detection sensor 40 is in the form of a rod having a certain length and is inserted into the perforation hole (A) together with the inspection rod 10, and then detects the groundwater when there is groundwater in the perforation hole (A) and monitors the device (70). ) through a speaker installed in the alarm sound, and using the depth measuring device 50 to measure the depth of the drilling hole (A) at which depth the groundwater exists,

A multi-purpose total detection device, characterized in that the position coordinate sensor 80 is installed inside the detection rod 10 to easily check the position information of the drilled hole A.
In the steel pipe multi-stage grouting tunnel reinforcement digital construction method using the multi-purpose total detection device of claim 1,

Forming a drilling hole (A) for steel pipe multi-stage grouting construction in the front of the tunnel excavation section (S10);

Step 20 of inserting the detection rod 10 equipped with the inclination sensor 20, the detection camera 30, the groundwater detection sensor 40, and the depth measuring device 50 into the drilling hole A;

Measuring the inclination angle of the drilling hole (A) while moving the inspection bar (10) to the end of the drilling hole (A), taking an internal image, and checking groundwater leakage (S30);

When the detection rod 10 is moved to the end of the drilling hole (A), the depth measuring cable 51 of the depth measuring device 50 is wound at the entrance of the drilling hole (A) to lift the detection rod 10. At the same time measuring the depth of the drilling hole (A) (S40);

Checking each measurement information of the inclination angle of the drilling hole (A), internal image, groundwater runoff, and depth in the monitoring device 70 (S50);

recovering the detection bar 10 from the drilling hole A (S60);

It is inserted into the perforation hole (A), a plurality of spray holes 900 are formed on the outer circumferential surface, and a plurality of partition plates 91 are arranged at regular intervals therein, and each partition is partitioned by each partition plate 91. Step of preparing the steel pipe 90 in which the outlet of each injection pipe 92 is located in the space (S70);

Adjusting the distance between each partition plate 91 of the steel pipe 90 according to each measurement information of the detected drilling hole (A) (S80);

Inserting the steel pipe 90 into the drilling hole (A) (S90);

Injecting a grout material after caulking the inlet of the steel pipe 90 (S100);

Forming a post-drilling hole (A) with reference to the inner stratum and the inclination angle of the pre-drilled hole (A) (S110);

Verification of the internal measurement information of the post-drilled hole (A) using a multi-purpose total detection device, adjusting the spacing of the partition plate (91), inserting the steel pipe (90), and repeating the injection of the grout material (S111). Steel pipe multi-stage grouting tunnel reinforcement digital construction method using total detection device.