KR101027380B1 - Fixing device of drainage system for tunnel - Google Patents

Abstract

PURPOSE: A fixing device of a tunnel drainage system is provided to prevent aging phenomenon caused by the melting of cement and ensure smooth drainage and efficient maintenance of a tunnel through independent management of drain pipes. CONSTITUTION: A fixing device(600) of a tunnel drainage system comprises a lower fixing member(610) and an upper fixing member(620). The lower fixing member is fixed to the lower side of a tunnel and formed with a fitting part on a side thereof. The upper fixing member is inserted and coupled to the fitting part of the lower fixing member and formed with an extension part of a certain angle on the upper side thereof.

Description

Fixing device of drainage system for tunnel}

The present invention relates to a tunnel drainage system fixing device, and more particularly, to a fixing device used in an improved tunnel drainage system that can minimize the drainage system clogging phenomenon of the tunnel and improve the durability of the tunnel.

In general, the construction of the tunnel by excavating the ground is completed through the process of installing lining concrete through the reinforcing process after the excavation.

As a method for constructing a tunnel as described above, the tunnel can be classified into excavation and detachment tunnel methods using NATM (New Austrian Tunneling Method) method by using explosives, and TBM (Tunnel Boring Machine) method. The center NATM method is a drilling method in which shotcrete is placed on the excavation section while tunneling is performed by explosive explosive, and the excavated surrounding ground itself is used as a support material, and lining concrete is formed on the shotcrete surface immediately. As a result, the economic feasibility and safety have been verified, making it the mainstream in the design and construction of tunnels.

In such tunnels, the effluent from the rock and the groundwater from the basement are inevitably introduced in accordance with the pressure applied from the surroundings. Accordingly, the cement solidifies in the drainage pipe due to the dissolution of shotcrete and lining concrete. Not only does not drain smoothly, but also the durability of the tunnel is degraded due to the cracking of the lining concrete, and when there is a lot of rain or snow, more water flows into the tunnel and this phenomenon is intensified. there was.

Therefore, most of the partial drainage tunnels are installed in the upper part of the tunnel boundary and the groundwater is collected and discharged from the lower part. The conventional tunnel drainage structure as shown in FIG. 1 is called shotcreting on a rock. The shotcrete (1) poured by the method called, the lining concrete (3) placed by the formwork on the inside of the shotcrete (1), and located between the shotcrete (1) and the lining concrete (3) 1) the water flowing through the waterproof membrane (2) to guide the water penetrated through the lower portion of the tunnel, and the waterproof membrane (2) located between the shotcrete (1) and the lining concrete (3) to pass through The perforated tube 4 having a plurality of holes is formed to be filled with filter concrete 5 mixed with aggregate and concrete so as to be fixed.

Further, a longitudinal drain pipe 6 connected to the perforated pipe 4 at regular intervals by a T-shaped joint pipe and a longitudinal drain pipe connected to the transverse drain pipe 6 to discharge water to the outside of the tunnel (main drain pipe) (7), the sewage inside the tunnel and the rainwater flowing into the tunnel to collect the drain holes (8) and discharge the underground water discharged from the underground drain pipe (7) and drainage (9) is made.

That is, the water penetrating into the shotcrete 1 through the rock does not pass through the waterproofing membrane 2 formed between the shotcrete 1 and the lining concrete 3 and flows down outside the waterproofing membrane 2 and flows. The water that flows down passes through the filter concrete (5) located at the end of the waterproof membrane (2) and then flows into the perforated pipe (4), and the introduced water flows into the longitudinal drain pipe (7) through the horizontal drain pipe (6). Gathered and discharged outside the tunnel.

According to this construction method, the water flowing into the tunnel can be discharged to the outside of the tunnel to reduce the cracking and corrosion of the lining concrete, but the clean water and the sewage inside the tunnel penetrate the tunnel sidewall. And without separating the rainwater flowing into the tunnel at one time to drain into one longitudinal drain (main drain pipe), there was a problem that can not be recycled clean water to waste water.

Accordingly, it penetrates into the inside of the tunnel and flows down through the waterproof membrane 20 between the shotcrete 10 and the lining concrete 30, passes through the filter concrete 50, is collected in the perforated pipe 40, and the longitudinal drainage pipe 70. As shown in FIG. 2 in order to distinguish the water discharged to the outside through the) and the sewage of the tunnel collected through the cavity 80 and discharged through a separate drain 81 and the contaminated water introduced into the tunnel By installing a separate drainage path 81 to distinguish between clean water and contaminated water to discharge to the outside of the tunnel.

However, according to the various methods as described above, in the process of water penetration into the tunnel while passing through the shotcrete and the filter concrete, not only the various by-products are mixed in the water, but also the cement in contact with the water is dissolved and included in the cement. The Calcium Oxide is swept away, and the natural groundwater, which was free of Lime, flows into the drain pipe with a high Lime content.

Particularly, in the process of collecting the permeated groundwater into the perforated pipe, the filter concrete is positioned around the perforated pipe to fix the perforated pipe uniformly. However, the filter concrete is also mixed with cement, so that calcium carbonate is precipitated inside the drain pipe. It has been a cause of worsening.

Therefore, calcium oxide is converted into calcium hydroxide in contact with water, and when combined with carbon dioxide in the atmosphere, it is converted into calcium carbonate, resulting in a solidification phenomenon (or baektae phenomenon), which gradually accumulates in the holes of various drain and perforated pipes inside the tunnel. As a result, the function of the drainage system is reduced, and hydraulic pressure acts on the lining, which may cause problems in safety and durability of the tunnel.

In addition, since water penetrates into the tunnel while passing through shotcrete and filter concrete and is primarily stored in the perforated pipe, it is discharged to the outside through the longitudinal drainage pipe again through the horizontal drainage pipe. There was an inconvenience of having to periodically clean a plurality of drain pipes by stacking the chains. Furthermore, in the conventional tunnel drainage structure as shown in FIGS. 1 and 2, it is practical to clean all the drain pipes through one cavity. Not only is this impossible, it also temporarily removes the deposited lime components inside the drainpipe, which is not the solution to the ultimate external factors.

Furthermore, since the main drain pipe in the longitudinal direction extends from the perforated pipe and the cavity to discharge the water to the outside of the tunnel, the vehicle in which the drain pipe is located cannot proceed and cannot be maintained. As the road boundary and the road narrowed, the driver's psychological burden increased and safety accidents frequently occurred.

An object of the present invention for solving the above problems is to improve the drainage system in the tunnel to prevent the solidification phenomenon due to the dissolution of cement and to have a smooth drainage system, and to efficiently maintain the maintenance by the independent drainage pipe operation It is to provide a fixing device used in the tunnel drainage system that can reduce the construction cost and improve the construction.

The configuration of the present invention for achieving the above object is fixed to the lower portion of the tunnel, the lower fixing member and the lower end is formed in the fitting portion formed in the vertical direction on one side is inserted into the fitting portion of the lower fixing member is coupled And, the upper side is characterized in that it comprises an upper fixing member is formed extending extension to have a predetermined inclination.

In addition, the upper end of the lower fixing member is preferably recessed in one side is concave inwardly is connected to the upper projection which is formed with a binding groove for binding the hollow tube, the lower end of the lower fixing member a plurality of It is preferable that the lower protrusion which is formed with a hole is connected, and the cross section of the said upper fixing member and the said extension part is formed in the shape of the curved unevenness | corrugation.

In addition, a first horizontal membrane that is fitted between one side of the upper fixing member and one side of the other upper fixing member adjacent to the second and the second side is fitted between one side of the extension and one side of the other extension adjacent to the extension. It is preferable to further comprise a diaphragm.

The effect of the present invention having the configuration as described above, in the process of collecting the water penetrating the tunnel side to the perforated pipe, it is possible to prevent the dissolution of cement by using only aggregate without using the filter concrete used around the perforated pipe, Because of this, it is possible to secure a permanent drainage function without a separate cleaning process to improve the safety and durability of the tunnel structure.

In addition, through the fixing device, pure aggregate can be fixed to the inclined area around the perforated pipe without using sticky cement, thereby preventing solidification inside the drain pipe and minimizing the blockage phenomenon. This has the advantage that not only can the construction cost be reduced, but also the construction period can be shortened.

In addition, since the binding groove is formed in the protrusion of the lower fixing member, the cylindrical hole tube can be easily seated, so the construction process is very simple.

Further, by making the cross-section of the upper fixing member into a curved concave-convex shape, at the same time to form an extension to the inside of the upper fixing member, so as to easily fit in each step in installing the first horizontal membrane and the second horizontal membrane, The construction process is simple and the construction period can be shortened.

1 is a cross-sectional view and a partially enlarged view showing a tunnel drainage system used in the prior art.
Figure 2 is a cross-sectional view and partially enlarged view showing a tunnel drainage system used in the prior art.
3 is a cross-sectional view and a partially enlarged view showing a tunnel drainage system according to an embodiment of the present invention.
4 is a cross-sectional view and a partially enlarged view showing a tunnel drainage system according to an embodiment of the present invention.
5 is an enlarged partial view of a tunnel drainage system according to an embodiment of the present invention;
Figure 6 is a perspective view showing a tunnel drainage system according to an embodiment of the present invention.
7 is a perspective view showing a fixing device used in the present invention.
8 is a perspective view showing a lower fixing member of the fixing device used in the present invention.
9 is a perspective view showing an upper fixing member of the fixing device used in the present invention.
10 is a perspective view showing a process in which the first horizontal membrane is coupled to the fixing device used in the present invention.
Figure 11 is a perspective view showing a process in which the second horizontal membrane is coupled to the fixing device used in the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The fixing device 600 used in the tunnel drainage system of the present invention is fixed to the lower portion of the tunnel, the lower fixing member 610 and the lower fixing the lower fixing member 610 is formed in the vertical direction grooves formed on one side It is inserted into the fitting portion 611 of the member 610 is coupled to, the upper side comprises an upper fixing member 620 is formed extending extension 621 to have a predetermined inclination.

That is, as shown in Figures 7 and 8, the lower fixing member 610 is formed in a wide plate shape to be fixed to the lower portion of the tunnel, the lower fixing member 610 after the bottom concrete is poured It may be fixedly coupled to the floor concrete surface by bolts or pins, or may have a T-shaped cross section to be embedded in the floor concrete at the time of leveling of the floor concrete to be embedded and fixed at the same time.

That is, the lower fixing member 610 is preferably inserted into the floor concrete before the bottom concrete is completely hardened, and the plate (wing) portion of the lower fixing member 610 is not hardened to be the same as the height of the fluid floor concrete. It can be fixed and leveled while maintaining its height.

In addition, a lower protrusion 614 may be connected to a lower end of the lower fixing member 610 in a vertical direction with the lower fixing member 610, so that the lower fixing member 610 is not hardened on the floating floor concrete. It can be easily fixed in a fixed position without moving.

Furthermore, by forming a plurality of holes to penetrate through the thickness of the lower protrusion 614, the flexible bottom concrete can be hardened in a state that penetrates between the holes of the lower protrusion 614, so that the bottom concrete is hardened and then fixed to the bottom The member 610 may not be moved upwards or removed.

One side of the lower fixing member 610 is formed with a groove in the vertical direction, the groove is preferably formed to have a sufficient depth so that the upper fixing member 620 can be fitted and coupled without shaking.

In addition, the cross section of the groove may be formed in various shapes such as square, hexagon, circle, etc. according to the cross-sectional shape of the upper fixing member 620 to be coupled.

Further, the lower fixing member 610 is placed above the perforated pipe 400 is surrounded by the aggregate 500, to facilitate the initial work of installing the perforated pipe 400, the lower fixed The upper end of the member 610 is preferably formed with a protrusion in which one side is recessed inwardly to form a binding groove 612 to which the hole tube 400 can be bound.

The size of the binding groove 612 may be variously formed in accordance with the diameter of the hole tube 400 is placed, by forming a protrusion formed with the binding groove 612, binding and aggregate of the hole pipe 400. Since the filling of 500 can be made easier, the construction process of the tunnel drainage system can be made simpler and easier.

The upper fixing member 620 as shown in Figure 9 is formed so that the lower end is inserted into the fitting portion 611 of the lower fixing member 610 is coupled, it is preferable to have a constant cross-section and diameter in the vertical direction. .

In addition, an extension part 621 is formed at an upper end of the upper fixing member 620, and the extension part 621 may be coupled to have a predetermined inclination toward the inner surface of the upper fixing member 620.

That is, extending from an inner surface of the upper end of the upper fixing member 620 should be connected to open the cross section of the end of the upper fixing member 620, which is another upper fixing member adjacent to the upper fixing member 620 When sandwiching the diaphragm between the (620), it is for easier to sequentially combine.

Cross sections of the upper fixing member 620 and the extension part 621 may be formed in various shapes such as a rectangle, a hexagon, and a circle, and both sides of the upper fixing member 620 and the extension part 621 may be in a longitudinal direction thereof. A groove is formed along the upper fixing member 620 and the extension portion 621 is preferably formed in a curved concave-convex shape.

7 and 9 illustrate cross-sections of the upper fixing member 620 and the extension part 621 having a 'H' shape in which both sides of the quadrangular shape have grooves formed inwardly. Obviously, the upper fixing member 620 may be formed in various shapes deformable according to the cross-sectional shape.

Accordingly, a first horizontal film 630 and a second horizontal film 640 may be coupled between the upper fixing member 620 and the extension part 621, respectively, and the first horizontal film 630 in FIGS. 10 and 11. ) And the second horizontal film 640 are shown.

That is, when the bottom concrete is poured, the lower fixing member 610 is embedded to couple the lower fixing member 610 to a predetermined position, and the hole tube 400 is fixed to a coupling groove of the lower fixing member 610. After the upper fixing member 620 is coupled to the fitting portion 611 of the lower fixing member 610, one side of the upper fixing member 620 and the other upper fixing member 620 adjacent thereto are formed. By sandwiching the first horizontal membrane 630 from one side to the other between one side, one side of the fixing device 600 used in the tunnel drainage system is completed.

As such, after the coupling of the first horizontal membrane 630 is completed between all the upper fixing members 620, aggregate 500 is added around the perforated pipe 400 to aggregate to the height of the first horizontal membrane 630. Secure the 500.

In the tunnel drainage structure used in the related art, since the filter concrete using cement is used to fix the aggregate 500 having no adhesiveness, the solidification phenomenon in which lime deposits are accumulated in the perforated pipe 400 and the plurality of drainage pipes is intensified. When using the fixing device 600 of the simple and convenient structure that can be fixed to the pure aggregate 500, as in the case, even by using the sticky cement fixed by positioning the aggregate 500 to the width and height desired by the user As a result, it is possible to fundamentally eliminate the inflow of lime material, which has been the main cause of the solidification phenomenon.

After the aggregate 500 is fixed to the height of the first horizontal film 630, the second side in an oblique direction between one side of the extension portion 621 and one side of the other extension portion 621 adjacent thereto. By inserting the diaphragm 640 from above, all of the side portions of the upper fixing member 620 may be closed.

After all of the second horizontal film 640 is positioned, the aggregate 500 is added again to position the aggregate 500 to the height of the second horizontal film 640, and the outside thereof is surrounded by a waterproof film 200. It is desirable to prevent groundwater from penetrating into the tunnel.

Aggregate 500 is added in stages as described above, and in order to facilitate coupling the first horizontal membrane 630 and the second horizontal membrane 640 sequentially, the cross section of the upper end of the upper fixing member 620 is The extension part 621 is coupled to the inner side of the upper fixing member 620 so as to be opened to insert the first horizontal film 630.

The fixing device 600 is made of a material such as plastic, reinforced plastic, which is not rusted or corroded because it continuously touches the groundwater penetrated from the side of the tunnel, the adhesive force through the fixing device 600 is easy to construct Pure aggregate 500 without this can be fixed around the perforated pipe 400, it is possible to fundamentally prevent the solidification phenomenon due to the dissolution of cement, and do not form a complex drainage system as in the conventional construction time of the tunnel Not only can it be shortened, it can also reduce costs.

Furthermore, the tunnel drainage system using the fixing device 600 as described above will be described in more detail.

Referring to Figure 3 showing an embodiment of the tunnel drainage system of the present invention, the present invention is a partial drainage tunnel drainage system in which water flows on the waterproof membrane 200 located inside the tunnel side wall, the waterproof Perforated pipe 400 is formed with a plurality of holes so that the water flowing down the membrane 200, aggregate 500 surrounding the perforated pipe 400, the perforated pipe 400 and the aggregate 500 It includes a fixing device 600 is coupled to the lower end of the tunnel and the other side is extended in the upper direction for fixing and the waterproof membrane 200 surrounding the outside of the aggregate 500 and the fixing device 600. Characterized in that made.

In FIG. 3, the hole pipe 400, the aggregate 500, and the fixing device 600 are formed at the lower end of the tunnel. However, the hole pipe 400, the aggregate 500, and the fixing device 600 may be formed as necessary. ) May be installed at any height inside the tunnel.

The hole pipe 400 is located on the inner side of the tunnel along the longitudinal direction of the tunnel, a plurality of holes are continuously formed along the length direction of the hole pipe 400, water can be introduced into the inside.

In the conventionally used perforated tube, the size of the formed hole is about 1 mm to 3 mm, which causes groundwater stagnation due to capillary force, and the hole is frequently blocked due to the solidification of cement. If it is clogged with materials, it must be cleaned using a high pressure water jet, but it is impossible to clean the water jet through a hole of 1mm to 3mm, and the drainage function due to the infiltration of groundwater is not only degraded. There is a problem that the safety of the tunnel structure is weak.

Therefore, when the diameter of the hole formed in the perforated pipe 400 is formed as large as about 5mm as in the present invention, there is no fear that the hole is blocked by precipitation of lime materials due to the dissolution of cement, as well as water through the wide hole. Since it can be more easily penetrated, the rapid discharge of groundwater can be achieved, thereby improving the safety of the tunnel structure.

In addition, even if the hole pipe 400 and the hole is blocked by the precipitation of a small amount of lime material, the sediment can be removed by passing the waterjet through a wide hole, thereby reducing the frequency of cleaning inside the tunnel, partial drain tunnel The drainage function of can be maintained smoothly.

Aggregate 500 is located around the perforated pipe 400, using only pure aggregate 500 instead of filter concrete in which aggregate and concrete were used in the related art, fixing the perforated pipe 400 as well as the perforated pipe ( 400) it is possible to filter out impurities in the groundwater flowing into the water and to prevent the ingress of lime matter.

In addition, since the cement material used for the filter concrete around the perforated pipe 400 is dissolved in the groundwater, the solidification phenomenon which is accelerated can be minimized, so that it is economical because it does not require continuous maintenance costs, and causes the blockage of the tunnel drain pipe. Can be eliminated fundamentally to ensure the safety of permanent drainage.

The aggregate 500 is preferably a coarse aggregate, it is more preferable to use a mixture of aggregates 500 of various sizes, large and small in order to minimize the gap between the aggregates 500.

As such, when only pure aggregate 500 is used without using the filter concrete in which cement is mixed, it can be seen that the pH value of the water passed is relatively low compared to the conventional one, which is not cemented. This is because it is wrapped around the perforated pipe 400 using only the pure aggregate 500 is not.

That is, in the prior art, because the filter concrete mixed with cement is used, a hydration reaction in which cement is dissolved in water to be infiltrated occurs, and the resulting calcium hydroxide has a strong alkalinity of about pH 12.5, and the calcium hydroxide is in the air. White carbonization occurred as a white solid through carbonation with carbon dioxide.

Therefore, sediment accumulates in the drain pipe inside the tunnel, and drainage does not occur smoothly, and a passive film is formed around the reinforcing bars in the tunnel to accelerate corrosion of the reinforcing bars, which has adversely affected the safety of the tunnel structure. .

Since the pH of the water discharged from the tunnel drainage system according to the present invention has a relatively low neutrality of about 7 to 8, it can be seen that it contains almost no cement and calcium hydroxide. It is more advantageous for maintaining safety.

In addition, in the prior art, the perforated pipe was fixed by constructing the top of the perforated pipe by using the cohesive filter concrete without the external supporter by filling the aggregate, but in the present invention, only the aggregate aggregate 500 without the sticky concrete is used instead of the aggregate aggregate 500. ), A separate fixing device 600 is required for uniformly positioning and fixing.

Therefore, the fixing device 600 is preferably located outside of the perforated pipe 400, one side of the fixing device 600 is fixedly coupled to the bottom concrete surface of the lower end of the tunnel, the other side toward the top of the tunnel More preferably, it extends flexibly.

That is, as the fixing device 600 is formed, the hole tube 400 may be stably fixed, and the non-adhesive aggregate 500 filled around the hole tube 400 may be fixed constantly, and structural safety may be fixed. I can keep it.

The fixing device 600 may be fixedly coupled to the floor concrete surface by bolts or pins after the floor concrete is poured, and may be embedded and fixed at the same time by being inserted therein during leveling of the floor concrete.

The fixing device 600 is more preferably made of a variety of materials, such as reinforced plastic that is not oxidized or corroded because it can be in direct contact with the groundwater to be penetrated.

Furthermore, even when the aggregate 500 is filled around the perforated pipe 400, in order to fix the cylindrical perforated pipe 400 so as not to move at a constant position on the flat bottom surface of the fixing device 600, the perforated pipe It is more preferable to fix the position of the perforated pipe 400 by placing the wire 400 on the bottom surface of the fixing device 600 and the like.

The outer periphery of the fixing device 600 and the aggregate 500 is surrounded by a waterproof membrane 200, so that water does not penetrate into the interior of the waterproof membrane 200, that is, the lining concrete 300, and the perforated pipe ( By being discharged to the outside through 400, it is possible to achieve a smooth drainage process and to improve the durability of the tunnel.

Referring to the enlarged view of FIG. 5, the waterproof film 200 guides the groundwater penetrating the shotcrete 100 from the upper part of the tunnel to the lower part of the tunnel to be discharged to the outside of the tunnel. Located along the surface between the and lining concrete 300, the outer surface of the waterproof film 200, that is, the surface contacting with the shotcrete 100 is further located non-woven fabric to filter impurities introduced into the tunnel Even better.

The waterproof membrane 200 is positioned along the surface facing the aggregate 500 and the fixing device 600 facing the lining concrete 300, the surface where the aggregate 500 and the shotcrete 100 meets Since the groundwater flows down the water to be penetrated into the hole (400), it is preferable to attach only the nonwoven fabric instead of the waterproof membrane (200) so that groundwater without impurities can penetrate into the hole (400).

Therefore, the process of constructing the tunnel using the drainage system as in the present invention, iii) shotcrete placement after excavation, ii) ABUT foundation concrete installation, iii) installation of fixing device, iii) fixing with wire after the location of the perforated pipe, It is completed through the process of filling aggregate around and installing waterproof membrane.

Tunnel drainage system as described above, the process described in the process of direct site-pouring in the process of constructing the tunnel, but the hole pipe 400, aggregate 500 and the fixing device 600 is formed After the ABUT structure is manufactured in advance from the outside, it can be inserted during the construction of the tunnel.

That is, as shown in the enlarged view of Figures 3 and 4, the ABUT structure for discharging the water flowing into the tunnel located at the lower end of the tunnel, the shotcrete 100, waterproof membrane 200 and lining concrete It is preferably made, including the 300, the hole pipe 400, the aggregate 500, the fixing device 600, the cavity 700, and the drainage path 800, etc. are formed therein.

Therefore, after the excavation of the tunnel, a separate process and time were required to form the drainage system as described above, but after fabricating the ABUT structure including the drainage system in advance from the outside, it was connected to the inner wall and the lower end of the tunnel. In this case, the construction process of the tunnel can be simplified, and the construction period can be shortened.

4, 5 and 6, the tunnel drainage system of the present invention is located in the lower portion extending from the inner wall of the tunnel, to collect the cleaning water inside the tunnel 700, the side of the cavity 700 A plurality of pipes formed to discharge the cleaning water inside the tunnel to the outside of the tunnel and to connect the one side of the cavity 700 and the drain port to discharge the cleaning water collected in the cavity 700 to the drain; And a blind pit drainage pipe 900 which is located at the lower end of the tunnel and discharges the incoming ground water to the outside of the tunnel.

That is, the uncontaminated groundwater penetrating through the side wall of the tunnel is discharged to the outside of the tunnel independently through the perforated pipe 400 as discussed above, and the polluted clean water and tunnel generated by cleaning the inner wall of the tunnel. Rainwater introduced from the outside is collected through the cavity 700, and is discharged to the outside of the tunnel through a separate drainage path 800 without mixing with the groundwater.

In addition, the groundwater penetrating from the lower end of the tunnel is located at the lower end of the tunnel can be collected through the blind culvert drain pipe 900 surrounded by the aggregate and discharged to the outside of the tunnel, the blind pit drain pipe 900 is also the perforated pipe ( As in 400, a plurality of holes are formed along the longitudinal direction, and the groundwater to be penetrated may be introduced into the blind rock drainage pipe 900, and the pipe having a diameter of 150 mm in consideration of the amount of groundwater flowing from the bottom of the tunnel. It is more preferable to use.

Since the groundwater penetrating into the tunnel and the cleaning water flowing into the tunnel are discharged to the outside of the tunnel through separate drain pipes, the collected ground water can be recycled as agricultural water, cleaning water, and fire extinguishing water. In addition, clean water can be recycled through separate storage and treatment, which enables efficient use of resources and establishes a drainage system that meets the latest strengthened environmental standards.

Furthermore, in the tunnel drainage system of the present invention, by simplifying the drainage system, each drain pipe can perform an independent drainage function without mutual interference, and a plurality of inspection ports are installed to facilitate maintenance. Compared to the tunnel drainage system, a narrower installation area is required, so that the width of the ABUT structure can be reduced and construction costs can be reduced.

That is, in the conventional drainage method, the perforated pipe only serves as a groundwater catchment, and the groundwater is discharged to the outside of the tunnel through the main drain pipe in the longitudinal direction through the lateral drain pipe. Due to the solidification phenomenon, the perforated pipe, the lateral drain pipe, and the longitudinal drain pipe all affected, resulting in an increase in the range of maintenance and a deterioration of the chain drainage function.

On the other hand, in the present invention by collecting the ground water in the perforated pipe 400 to extend the direct pipe 400 to the outside directly outside the tunnel, not only can reduce the construction cost, the perforated pipe 400 is the main drain pipe As it plays an independent role, sediment and waste are not transferred to other drainage pipes, thereby simplifying maintenance and improving the safety of the tunnel structure.

The diameter of the hole tube 400 is preferably formed to about 200mm, it is natural that the hole tube 400 of various diameters can be installed in consideration of the amount of water introduced into the tunnel.

Therefore, instead of the conventional hole tube having a diameter of 100mm to 150mm, by using the hole tube 400 having a diameter of about 200mm to greatly increase its cross-sectional area, it is possible to simplify the drainage structure and facilitate maintenance, longitudinal direction The omission of the drain pipe increases the pavement cross section of the tunnel floor in the lateral margin of the tunnel, which further extends the road boundary toward the tunnel sidewall, thereby relieving the psychological burden felt by the driver and preventing safety accidents.

In addition, as shown in Figures 4, 5 and 6, extending to the upper side of the hole pipe 400 to install a first check hole 510 to the inner wall of the tunnel, and to the upper side of the blind pit drainage pipe 900 The second inspection opening 910 is extended to the inner wall of the tunnel to open the inspection gate without disturbing the traffic of the vehicle, so that the manager can easily maintain the drain pipe, thereby achieving smooth drainage, and ultimately, This enables stable maintenance of the tunnel structure.

The first inspection tool 510 is formed at intervals of about 50 m along the longitudinal direction of the perforated pipe 400, to facilitate visual observation and access to the drain pipe, and directly inputs maintenance equipment and cleaning equipment. It is more preferable to be able to wash the hole pipe 400 and the blind pit drainage pipe (900).

The first inspection opening 510 may be changed in height and position according to the position of the perforated pipe 400, and appropriate height and size in consideration of the drainage burden of the perforated pipe 400 and the reduction of the cross section of the lining concrete 300. It is better to transform it to a position.

The second check hole 910 is for maintaining the blind pit drainage pipe 900 located in the lower part of the tunnel. In the conventional tunnel structure, since the upper side of the blind pit drainage pipe is all packaged and cannot be opened, the blind pit The maintenance of the inside of the drain pipe was not possible at all, but in the present invention, since the blind culvert drain pipe 900 is located closer to the side wall of the tunnel as the width of the ABUT structure decreases, the second inspection hole 910 which is a manhole for maintenance. It can be installed and maintained without disturbing the traffic flow, such as blocking the lane, as well as installing a groove around the lid of the second check hole 910 by the inflow of the cleaning water and the road surface water flowing into the tunnel It is possible to block the more effective utilization of groundwater.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

100: shotcrete 200: waterproof film
300: lining concrete 400: perforated pipe
500: aggregate 510: first inspection ball
600: fixing device 700: cavity ball
800: drainage channel 900: blind pit drainage pipe
910: second inspection
610: lower fixing member 611: fitting
612: binding groove 613: upper protrusion
614: lower protrusion 620: upper fixing member
621: extension portion 630: first horizontal film
640: second street

Claims (6)

delete delete In the fixing device used in the partial drainage tunnel drainage system in which water flows on the waterproof membrane 200 located inside the tunnel side wall,
It is fixed to the lower portion of the tunnel, a fitting portion 611 which is a groove formed in a vertical direction is formed on one side, and a binding groove 612 is formed on one side thereof to be recessed to concave inwardly so that the perforated pipe 400 can be bound. A lower fixing member 610 to which an upper protrusion 613 is connected, and a lower protrusion 614 to which a plurality of holes are formed at a center thereof is connected to a lower end thereof;
The lower end is inserted into the fitting portion 611 of the lower fixing member 610 is coupled to, and the upper side comprises an upper fixing member 620 is formed extending extension 621 to have a predetermined inclination Tunnel drainage system fixture 600, characterized in that.
The method of claim 3,
Cross section of the upper fixing member 620 and the extension portion 621 is a tunnel drainage system fixing device, characterized in that the curved concave-convex shape.
The method of claim 4, wherein
Tunnel drainage system fixing device characterized in that it further comprises a first horizontal membrane 630 is fitted between one side of the upper fixing member 620 and one side of the other upper fixing member 620 adjacent thereto ( 600).
The method of claim 4, wherein
Tunnel drainage system fixing device 600 characterized in that it further comprises a second horizontal membrane 640 is fitted between one side of the extension portion 621 and one side of the other extension portion 621 adjacent thereto. .

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