KR100906194B1 - Drainage structure of tunnel, and its construction method, and sleeve socket used for the same - Google Patents

Drainage structure of tunnel, and its construction method, and sleeve socket used for the same Download PDF

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Publication number
KR100906194B1
KR100906194B1 KR1020070084639A KR20070084639A KR100906194B1 KR 100906194 B1 KR100906194 B1 KR 100906194B1 KR 1020070084639 A KR1020070084639 A KR 1020070084639A KR 20070084639 A KR20070084639 A KR 20070084639A KR 100906194 B1 KR100906194 B1 KR 100906194B1
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KR
South Korea
Prior art keywords
waterproof sheet
pipe
joint
tunnel
socket
Prior art date
Application number
KR1020070084639A
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Korean (ko)
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KR20090020151A (en
Inventor
김상용
Original Assignee
연일화섬공업(주)
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Priority to KR1020070084639A priority Critical patent/KR100906194B1/en
Publication of KR20090020151A publication Critical patent/KR20090020151A/en
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Publication of KR100906194B1 publication Critical patent/KR100906194B1/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F16/00Drainage
    • E21F16/02Drainage of tunnels
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • E21D11/383Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00Joints with sleeve or socket
    • F16L21/002Sleeves or nipples for pipes of the same diameter; Reduction pieces

Abstract

A drainage structure of a tunnel comprising a waterproof sheet is disclosed. The disclosed drainage structure includes: a porous first drain pipe wrapped with the waterproof sheet and provided inside the waterproof sheet; A second drain pipe provided outside the waterproof sheet; A pipe joint socket having a first joint pipe part connected to the first drain pipe and a second joint pipe part connected to the second drain pipe through a cutout formed in the waterproof sheet; The packing socket includes a sleeve socket having a pipe part inserted into and fixed to the second joint pipe part and a bracket part joined to the waterproof sheet.
Tunnel, drainage structure, sleeve socket, pipe joint socket, waterproof sheet, cutout

Description

Drainage structure of tunnel and its construction method and sleeve socket used for it {DRAINAGE STRUCTURE OF TUNNEL, AND ITS CONSTRUCTION METHOD, AND SLEEVE SOCKET USED FOR THE SAME}

The present invention relates to a drainage structure of a tunnel, a construction method thereof, and a sleeve socket used therein.

In general, tunnels are underground structures that are artificially made for transportation, hauling, water supply, and power installations. In the construction of the tunnel as described above, inflow of water, especially underground water generated in the underground is known as one of the great causes of impairing the durability of the tunnel. Groundwater can occur in any type of tunnel construction and measures are required.

Construction methods to prevent the inflow of water in tunnels have been done using pressurized excavation chambers that block the inflow of water, but such methods are currently rarely used due to their high cost, risk, and slowing down of excavation work. . Instead, a method of draining the water penetrated into the shotcrete layer of the tunnel to the outside by using a drainage structure is mainly used.

4 shows a conventional tunnel structure constructed using a drainage structure. Referring to FIG. 4, the conventional tunnel structure includes a shotcrete layer 52 and a lining concrete layer 54, and between the shotcrete layer 52 and the lining concrete layer 54 through a shotcrete layer 52. There is interposed a waterproof sheet 56 to guide the infiltrated water. Water flowing through the waterproof sheet 56 is introduced into the porous longitudinal drainage pipe 62, and the introduced water 62 is connected to the longitudinal drainage pipe 62 by the "T" type pipe joint 66. It flows to the collecting pipe 60 through the connected lateral drain pipe 64 and is drained to the outside.

In the prior art as described above, in order to connect the longitudinal drain pipe 62 inside the waterproof sheet 56 and the transverse drain pipe 64 outside the waterproof sheet 56 to the pipe joint socket 66, A cut through the inside and outside is required, and through the cut, it is possible to connect the drain pipe of the pipe joint 66. At this time, since the leakage occurs through the incision, there is a need to suppress the leakage through the bonding of the waterproof sheet 56 and the pipe joint socket 66.

However, the joining between the pipe joint 66 and the waterproof sheet 56 was not easy, and even if the joining was possible, it was difficult to completely suppress the leakage through the cutout of the waterproof sheet 56. Furthermore, the waterproof sheet 56 and the pipe joint socket 66, for example, PVC and EVA, the material properties of the material is very different, it was practically impossible to join by heat fusion.

Therefore, the technical problem of the present invention, while having a structure in which the drain pipes inside and outside the waterproof sheet is connected by a pipe joint socket through a cutout formed in the waterproof sheet, to strictly block the leakage through the cut between the waterproof sheet and the pipe joint socket. It is to provide a drainage structure of the tunnel and its construction method.

Another technical problem of the present invention is a drainage structure of a tunnel having a structure in which drain pipes inside and outside the waterproof sheet are connected by a pipe joint socket through a cutout formed in the waterproof sheet, while connecting the pipe joint socket to the waterproof sheet, It is to provide a sleeve socket of the packing structure.

According to one aspect of the invention there is provided a drainage structure of a tunnel comprising a waterproof sheet. The drainage structure of the tunnel, the porous first drain pipe is wrapped by the waterproof sheet and provided inside the waterproof sheet; A second drain pipe provided outside the waterproof sheet; A pipe joint socket having a first joint pipe part connected to the first drain pipe and a second joint pipe part connected to the second drain pipe through a cutout formed in the waterproof sheet; The packing socket includes a sleeve socket having a pipe part inserted into and fixed to the second joint pipe part and a bracket part joined to the waterproof sheet.

Preferably, the bracket portion and the waterproof sheet are formed of a material capable of heat fusion to each other, more preferably, the bracket portion and the waterproof sheet is made of EVA material.

Preferably, the bracket portion, the first drain pipe and the first joint pipe portion connected to it is wrapped in a circular curved shape, the bracket portion is configured in a curved shape in close contact with the curved shape of the waterproof sheet.

According to another aspect of the invention, connecting the first joint pipe portion of the pipe joint socket to the porous first drain pipe wrapped inside the waterproof sheet, the second joint pipe portion of the pipe joint socket through the cutout formed in the waterproof sheet Provided is a method for constructing a drainage structure of a tunnel connecting the first drain pipe and the second drain pipe to a second drain pipe outside the waterproof sheet. The construction method includes the steps of preparing a sleeve socket consisting of a pipe portion and a bracket portion connected to the pipe portion; And inserting and fixing the pipe part to the second joint pipe part and bonding the bracket part to the waterproof sheet, thereby packing the cutout part.

Other objects and advantages of the invention will be more clearly understood from the following description of the examples.

According to the present invention, in a drainage structure in which a first drain pipe and a second drain pipe inside and outside the waterproof sheet are connected to a pipe joint socket through a cutout formed in the waterproof sheet, the cutout is packed by using a sleeve socket. Prevents leakage and, in particular, the risk of leaks and freezes caused by the pressure of water flowing back during the rainy or winter seasons.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing the tunnel drainage structure in an exploded state according to an embodiment of the present invention, Figure 2 is a perspective view showing the tunnel drainage structure in a combined state according to an embodiment of the present invention, Figure 3 is Sectional view showing a tunnel drainage structure according to an embodiment of the present invention.

As shown in FIGS. 1 to 3, the tunnel drainage structure 100 (hereinafter, referred to as “drainage structure”) according to the present embodiment includes a waterproof sheet 110, first and second drain pipes 120 and 130. , Pipe joint socket 140, and sleeve socket 160. 1 to 3 illustrate a part of the waterproof sheet 110 installed in the tunnel, but the waterproof sheet 110 is shown in an unfolded state in FIG. 1, and the waterproof sheet 110 is illustrated in FIGS. 2 and 3. 1 is a state in which the drain pipe 120 and the like wrapped in a "U" type.

The waterproof sheet 110 shown in FIGS. 1 to 3 is a portion of the waterproof sheet interposed between the shotcrete layer and the lining concrete layer of the tunnel. The nonwoven fabric 109 for drainage induction is bonded to the upper surface of the waterproof sheet 110 by a heat fusion method. In this case, the thermal fusion may be point fusion or pre-fusion. Bonding of the waterproof sheet 110 and the nonwoven fabric 109 is preferably made by a hot welding method by hot air, and may be made before or during tunnel construction. In addition, the waterproof sheet 110 is installed in the tunnel to surround the lower portion of the first drain pipe 120 and the like in a substantially "U" shape. In FIG. 1, reference numeral 111 denotes a viscous fusion formed by local thermal fusion of the nonwoven fabric 109 and the waterproof sheet 110.

The first drain pipe 120 is wrapped by the waterproof sheet 110 and configured to introduce water guided along the nonwoven fabric 109 and the waterproof sheet 110 from the inside of the waterproof sheet 110. To this end, the first drain pipe 120 is made of a drain pipe, porous and bendable with a plurality of holes (122). The first drain pipe 120 is piped with the second drain pipe 130 outside the waterproof sheet 110 by a pipe fitting socket 140 of the "T" type. A circular cutout 112 is formed in the waterproof sheet 110 to be a pipe of the first and second drain pipes 120 and 130 inside and outside the waterproof sheet 110. In addition, the drainage structure 100 of the present embodiment includes a C-type binding ring 170, the binding ring 170 is fitted to firmly fix the first drain pipe 120 and the waterproof sheet 110 surrounding it. Lose.

The pipe joint socket 140 may include a pair of first joint pipe parts 142 and a first joint pipe part 142 vertically connected to a pair of first drain pipes 120 disposed on the same straight line. It consists of a "T" type structure including two joint pipe part 144. At this time, if the pipe joint socket 140 is used to connect one first drain pipe 120 and one second drain pipe 130, the pipe socket 140 may be formed of a "b" type structure. In addition, when the first drain pipe 120 and the second drain pipe 130 has a structure that intersects at an angle other than a right angle, the pipe joint socket 140 is the first and the "T" type or not "a" type and The second joint parts 142 and 144 may have a structure that intersects at an angle other than vertical.

In an embodiment of the present invention, the first joint pipe part 142 is connected to the first drain pipe 120 in the inner side of the waterproof sheet 110 surrounding itself. In addition, the second joint pipe part 144 is connected to the second drain pipe 130 while extending toward the outside of the waterproof sheet 110 through the cutout 112 of the waterproof sheet 110. A gap exists between the cutout 112 and the second joint pipe part 144, and a leak may be formed through the gap. In order to prevent such a gap, a sleeve socket 160 is provided between the waterproof sheet 110 and the pipe joint socket 140, and the sleeve socket 160 will now be described in more detail.

The sleeve socket 160 is composed of a pipe portion 162 and a bracket portion 164 integrally formed with each other, and is made of a heat-sealed material with respect to the waterproof sheet 110. The pipe part 162 is inserted into and fixed to the outer circumferential surface of the second joint pipe part 142, and the bracket part 164 is heat-sealed to one surface of the waterproof sheet 110 at the upper end of the pipe part 162.

In the embodiment of the present invention, both the sleeve socket 160 and the waterproof sheet 110 are made of EVA material, so that the bracket portion 164 of the sleeve socket 160 is easily opened to the waterproof sheet 110. Can be fused. Preferably, the pipe part 162 and the bracket part 164 are integrally molded by the same material, but only the bracket part 164 is formed of a material that can be heat-sealed with respect to the waterproof sheet 110, and the pipe part ( 162 may be formed of another material and may be connected to the bracket portion 164.

In an embodiment of the present invention, the first and second joint pipe portions 142 and 144 of the first drain pipe 120, the second drain pipe 130, and the pipe joint socket 140 all have a circular shape. The waterproof sheet 110 surrounds the lower portion of the circular first drain pipe 120 and the circular first fitting pipe portion 142 connected thereto in a substantially “U” shape, and thus has a substantially circular curved surface at the bottom thereof. do. The bracket 164 of the sleeve socket 160 is formed of a substantially circular curved surface and is in close contact with the curved surface of the waterproof sheet 110 shown in FIGS. 2 and 3. In addition, since the bracket part 164 is made of a flexible material such as EVA, the bracket part 164 may be bent to be in close contact with the curved surface of the waterproof sheet 110 during the heat fusion process for the waterproof sheet 110. Thermal fusion of the bracket portion 164 and the waterproof sheet 110 may be performed by applying hot air.

As described above, the sleeve socket 160 has its own bracket portion 164 with its tube portion 162 being fixedly fitted to the second joint tube portion 144 of the tube socket 140. ) Is bonded to the waterproof sheet 110 to pack the cutout 112 formed in the waterproof sheet 110. Therefore, leakage through the cutout 112 is blocked, and furthermore, the pipe joints of the first and second drain pipes 120 and 130 by the sleeve socket 160 may be more reliably implemented.

Briefly described the construction method of the above-described drainage structure 100 as follows.

First, between the shotcrete layer of the tunnel and the lining concrete layer, by using a portion of the waterproof sheet 110 provided with the nonwoven fabric 109, the porous first drain pipe 120 and the pipe joint socket 140 connected thereto. The first joint pipe portion 142 of approximately "U" shape. At this time, a cutout 112 is formed in a part of the waterproof sheet 110 in which the second joint pipe part 144 of the pipe joint 140 is formed, and through the cutout 112, the second joint pipe part ( 144 and the second drain pipe 130 may be connected.

Before connecting the second joint pipe part 144 and the second drain pipe 130, a gap between the cutout 112 of the waterproof sheet 110 and the second joint pipe part 144 using the sleeve socket 160. To prevent the packing process is performed, the specific method is as follows. First, the pipe part 162 of the prepared sleeve socket 160 is inserted into and fixed to the outer circumferential surface of the second joint pipe part 144. At this time, the pipe 162 is made of a flexible material, in particular, EVA material is tightly and elastically close to the second joint pipe 144.

Next, the bracket portion 164 of the sleeve socket 160 is brought into close contact with the waterproof sheet 110, and in the adhered state, the bracket portion 164 and the waterproof sheet 110 are heat-sealed using hot air. When the sleeve socket 160 is installed in the above manner, a gap between the cutout 112 of the waterproof sheet 110 and the second joint pipe part 144 of the pipe joint socket 140 may be completely packed. .

1 is an exploded perspective view showing the drainage structure of the tunnel in an exploded state according to an embodiment of the present invention.

Figure 2 is a perspective view of the projection coupling coupled to the drainage structure of the tunnel according to an embodiment of the present invention.

3 is a cross-sectional view showing a drainage structure of a tunnel according to an embodiment of the present invention.

Figure 4 is a cross-sectional view showing a tunnel structure using a conventional drainage structure.

<Code Description of Main Parts of Drawing>

110: waterproof sheet 109: nonwoven fabric

112: incision 120: first drain pipe

130: second drain pipe 140: pipe joint socket

160: sleeve socket 162: pipe

164: bracket portion

Claims (11)

  1. In the drainage structure of the tunnel comprising a waterproof sheet formed with a cutout,
    A porous first drain pipe wrapped with the waterproof sheet and provided inside the waterproof sheet;
    A second drain pipe provided outside the waterproof sheet;
    A pipe joint socket having a first joint pipe part connected to the first drain pipe inside the waterproof sheet and a second joint pipe part connected to the second drain pipe outside the waterproof sheet through the cutout;
    And a pipe socket and a bracket socket, wherein the pipe socket is joined to the surface of the waterproof sheet in a state where the pipe bracket is inserted into and fixed to the second joint pipe, and includes a sleeve socket for packing the cutout. The drainage structure of the tunnel.
  2. The drainage structure of a tunnel according to claim 1, wherein the bracket part and the waterproof sheet are formed of a material that can be thermally fused to each other.
  3. The drainage structure of claim 2, wherein the bracket part and the waterproof sheet are made of EVA material.
  4. The method according to claim 1, wherein the bracket portion, the first drain pipe and the first joint pipe portion connected to it is wrapped in a circular curved shape, the bracket portion is characterized in that the curved shape is in close contact with the curved shape of the waterproof sheet The drainage structure of the tunnel.
  5. A waterproof sheet formed with a cutout, a porous first drain pipe wrapped by the waterproof sheet and provided inside of the waterproof sheet, a second drain pipe provided outside of the waterproof sheet, and the first inside of the waterproof sheet. In the construction method of the drainage structure of the tunnel comprising a pipe joint socket having a first joint pipe portion connected to the drain pipe and the second joint pipe portion connected to the second drain pipe outside the waterproof sheet through the cutout,
    Preparing a sleeve socket consisting of a pipe part and a bracket part;
    Inserting and fixing the tube portion of the sleeve socket to fit the second joint portion;
    And fitting the bracket portion of the sleeve socket to the surface of the waterproof sheet in a state where the pipe portion is fitted and fixed to the second joint pipe portion to seal the cutout portion.
  6. The method for constructing a drainage structure of a tunnel according to claim 5, wherein the bracket part and the waterproof sheet are heat-sealed by hot air to pack the cutout part.
  7. The method of claim 6, wherein the bracket portion and the waterproof sheet is constructed of a drainage structure of the tunnel, characterized in that made of EVA material.
  8. A waterproof sheet formed with a cutout, a porous first drain pipe wrapped by the waterproof sheet and provided inside of the waterproof sheet, a second drain pipe provided outside of the waterproof sheet, and the first inside of the waterproof sheet. In a drainage structure of a tunnel comprising a pipe joint socket having a first joint pipe portion connected to the drain pipe and a second joint pipe portion connected to the second drain pipe outside the waterproof sheet through the cutout,
    A pipe part inserted into and fixed to the second joint pipe part;
    Integral to the pipe part, and the incision packing used for the drainage structure of the tunnel, characterized in that it comprises a bracket portion bonded to the surface of the waterproof sheet in a state that the tube is inserted and fixed to fit the second joint pipe portion Sleeve socket for.
  9. 10. The sleeve socket of claim 8, wherein the bracket part is made of a material that is heat-sealed to the waterproof sheet.
  10. 10. The sleeve socket for cutting packing according to claim 9, wherein the bracket part is made of EVA material.
  11. The method according to any one of claims 8 to 10, wherein the pipe portion is made of a circular shape, the bracket portion for the incision packing used for the drainage structure of the tunnel, characterized in that the surface is made of a curved surface bonded to the waterproof sheet. Sleeve socket.
KR1020070084639A 2007-08-22 2007-08-22 Drainage structure of tunnel, and its construction method, and sleeve socket used for the same KR100906194B1 (en)

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Application Number Priority Date Filing Date Title
KR1020070084639A KR100906194B1 (en) 2007-08-22 2007-08-22 Drainage structure of tunnel, and its construction method, and sleeve socket used for the same

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KR1020070084639A KR100906194B1 (en) 2007-08-22 2007-08-22 Drainage structure of tunnel, and its construction method, and sleeve socket used for the same

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KR100906194B1 true KR100906194B1 (en) 2009-07-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101798939A (en) * 2010-03-17 2010-08-11 中铁隧道勘测设计院有限公司 Maintainable tunnel drainage system
CN105756170A (en) * 2016-04-21 2016-07-13 安徽意力电缆有限公司 Automatic drainage device of cable tunnel
CN105756184A (en) * 2016-04-21 2016-07-13 安徽意力电缆有限公司 ARM-based automatic cable trench drainage system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100959301B1 (en) * 2009-03-31 2010-06-01 유위열 Tunnel structure object and tunnel and tunnel construction work method
KR101066648B1 (en) * 2009-07-07 2011-09-22 코오롱건설주식회사 Catchment Apparatus for Tunnel
CN102587938B (en) * 2012-03-16 2014-02-12 郑州市市政工程总公司 Water seepage and leakage preventability collection system for tunnel and construction method of system
CN108361064A (en) * 2018-01-12 2018-08-03 重庆交通大学 Tunnel novel water drainage structure based on barometric gradient trigger switch principle
CN109184754B (en) * 2018-08-08 2020-06-02 中铁第四勘察设计院集团有限公司 Tunnel water drainage disease prevention treatment method and system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100235820B1 (en) 1993-02-22 1999-12-15 이마호리히또시 Pipe coupling and locking device therefor
KR20010018221A (en) * 1999-08-18 2001-03-05 김경옥 Improved Waterproof Sheet and Method for Constructing Hybrid Membranes Using the Same
KR200347458Y1 (en) * 2004-01-06 2004-04-13 연일화섬공업(주) Settling ring for waterproof sheets using in tunnel drainage structures and Tunnel drainage structures containing the ring
KR20040072399A (en) * 2003-02-12 2004-08-18 주식회사 부일건화 Elasticized waterproofing sheet and waterproofing structure of tunnel using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100235820B1 (en) 1993-02-22 1999-12-15 이마호리히또시 Pipe coupling and locking device therefor
KR20010018221A (en) * 1999-08-18 2001-03-05 김경옥 Improved Waterproof Sheet and Method for Constructing Hybrid Membranes Using the Same
KR20040072399A (en) * 2003-02-12 2004-08-18 주식회사 부일건화 Elasticized waterproofing sheet and waterproofing structure of tunnel using the same
KR200347458Y1 (en) * 2004-01-06 2004-04-13 연일화섬공업(주) Settling ring for waterproof sheets using in tunnel drainage structures and Tunnel drainage structures containing the ring

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101798939A (en) * 2010-03-17 2010-08-11 中铁隧道勘测设计院有限公司 Maintainable tunnel drainage system
CN101798939B (en) * 2010-03-17 2013-04-24 中铁隧道勘测设计院有限公司 Maintainable tunnel drainage system
CN105756170A (en) * 2016-04-21 2016-07-13 安徽意力电缆有限公司 Automatic drainage device of cable tunnel
CN105756184A (en) * 2016-04-21 2016-07-13 安徽意力电缆有限公司 ARM-based automatic cable trench drainage system
CN105756170B (en) * 2016-04-21 2018-05-15 安徽枫雅轩科技信息服务有限公司 Cable tunnel self-draining arrangement
CN105756184B (en) * 2016-04-21 2018-05-18 安徽枫雅轩科技信息服务有限公司 Cable duct automatic drain system based on ARM

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