CN-224214225-U - Tunnel lining waterproof and drainage structure

CN224214225UCN 224214225 UCN224214225 UCN 224214225UCN-224214225-U

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a tunnel lining waterproof and drainage structure, which comprises tunnel surrounding rock, a main drain pipe positioned at the bottom of the tunnel surrounding rock and a ground drainage module used for ground drainage and ground drainage, wherein a primary support layer, a waterproof board layer, a waterproof spraying layer and a secondary lining layer are sequentially arranged from outside to inside from the tunnel surrounding rock, an outer drainage layer used for draining water between the primary support layer and the waterproof board layer is arranged between the primary support layer and the waterproof board layer, a drainage plate used for draining water between the waterproof spraying layer and the secondary lining layer is arranged between the waterproof spraying layer and the secondary lining layer, and the drainage plate receives water drained by the outer drainage layer.

Inventors

ZHANG BINBIN
LI YALONG
MAO JINBO
CHEN SHUO
FAN ZERUI

Assignees

中交二公局东萌工程有限公司

Dates

Publication Date: 20260508
Application Date: 20250630

Claims (12)

1. The tunnel lining waterproof and drainage structure comprises a tunnel surrounding rock (1), a main drain pipe (5) arranged at the bottom of the tunnel surrounding rock (1) and a drainage plate block (7) for draining water between the waterproof and spraying layer (10) and the secondary lining layer (3) from outside to inside, wherein a primary support layer (2), a waterproof plate layer (9), a waterproof spraying layer (10) and the secondary lining layer (3) are sequentially arranged from outside to inside of the tunnel surrounding rock (1), the tunnel lining waterproof and drainage structure is characterized in that an outer drainage layer (8) for draining water between the primary support layer (2) and the waterproof plate layer (9) is arranged between the primary support layer (2) and the waterproof plate layer (9), a drainage plate block (7) for draining water between the waterproof spraying layer (10) and the secondary lining layer (3) is arranged between the waterproof spraying layer (10) and the secondary lining layer (3), the drainage plate block (7) is used for receiving water drained by the primary support layer (2), the bottom of the primary support layer (2) is provided with a drainage block (6) for draining water and guiding water to drain pipes (6) drained in the main drain pipe (5), and the drainage block (6) is connected with the drainage block (6).
2. A tunnel lining drainage-preventing structure as set forth in claim 1, wherein a filling layer (11) is provided between the waterproof spray coating layer (10) and the secondary lining layer (3), the filling layer (11) is filled with crushed stone, and a waterproof spray coating drainage plate (72) for draining water between the waterproof spray coating layer (10) and the secondary lining layer (3) is provided at the junction of the filling layer (11) and the secondary lining layer (3).
3. The tunnel lining drainage-preventing structure according to claim 2, wherein the waterproof spraying layer drainage plate (72) is arranged on the drainage plate block (7), a plurality of drainage pipes I (73) are fixedly arranged on the waterproof spraying layer drainage plate (72) in an array mode, drainage grooves II (78) are fixedly arranged at first ends of the drainage pipes I (73), the drainage grooves II (78) are fixedly arranged with the waterproof spraying layer drainage plate (72), the drainage grooves II (78) are tightly attached to the inner side of the waterproof spraying layer (10), and the drainage grooves II (78) are used for guiding water between the waterproof spraying layer (10) and the secondary lining layer (3) into the drainage pipes I (73).
4. The tunnel lining drainage-preventing structure according to claim 2, wherein the drainage groove I (75) is fixedly arranged on the waterproof spraying layer drainage plate (72), the drainage groove I (75) is tightly attached to one surface, close to the primary support layer (2), of the filling layer (11), a plurality of drainage pipes IV (77) are fixedly arranged on the drainage groove I (75) in an array mode, the drainage groove I (75) conducts water between the filling layer (11) and the secondary lining layer (3) into the drainage pipes IV (77), the drainage pipes IV (77) are communicated with the drainage pipes I (73), and the drainage pipes IV (77) are used for receiving water in the drainage pipes I (73).
5. A tunnel lining drainage-preventing structure as set forth in claim 4, wherein a plurality of drainage pipes III (76) are fixedly arranged on the drainage plate (7), the drainage pipes III (76) are communicated with the drainage pipes IV (77), and the drainage pipes III (76) are used for receiving water in the drainage pipes IV (77) and guiding the water into the drainage pipes (6).
6. The tunnel lining drainage-preventing structure according to claim 5, wherein the drainage plate (7) is fixedly provided with an outer drainage layer drainage plate (71), a plurality of drainage pipes II (74) are fixedly arranged on the outer drainage layer drainage plate (71) in an array, the drainage pipes II (74) are used for receiving water discharged by the outer drainage layer (8), the drainage pipes II (74) are communicated with the drainage pipes III (76), and the water received by the drainage pipes II (74) is drained into the drainage pipes (6) through the drainage pipes III (76).
7. A tunnel lining drainage prevention structure as set forth in claim 1, wherein the drainage pipe (6) is provided with a plurality of drainage holes which are communicated with the main drainage pipe (5) for draining water in the drainage pipe (6) into the main drainage pipe (5).
8. The tunnel lining drainage-preventing structure according to claim 1, wherein the outer drainage layer (8) is provided with a plurality of annular guide pipes (81) for guiding water between the primary support layer (2) and the inverted arch of the secondary lining layer (3), the outer drainage layer (8) is also provided with a plurality of longitudinal guide grooves (82) for gathering water between the primary support layer (2) and the waterproof layer (9), and two sides of the longitudinal guide grooves (82) are respectively attached to the primary support layer (2) and the waterproof layer (9).
9. A tunnel lining drainage preventing structure as set forth in claim 8, wherein the annular draft tube (81) passes through the longitudinal draft tube (82) at the upper layer of the outer drainage layer (8) and is communicated with the longitudinal draft tube (82) at the bottom of the outer drainage layer (8) for collecting water in the longitudinal draft tube (82) at the bottom of the outer drainage layer (8).
10. The tunnel lining drainage prevention structure according to claim 8, wherein a plurality of drainage guide pipes (83) for drainage are fixedly arranged on the longitudinal guide grooves (82) at the bottom of the outer drainage layer (8), and the drainage guide pipes (83) are communicated with the drainage plate (7) and used for draining the collected water into the drainage plate (7).
11. The tunnel lining drainage-preventing structure according to claim 1, wherein the connecting block (4) is fixedly provided with a lower fastening plate (43), the connecting block (4) is further provided with an upper fastening plate (41) in a sliding manner, the upper fastening plate (41) is matched with the lower fastening plate (43) to preliminarily fasten the drainage pipe (6), the upper fastening plate (41) is rotatably provided with a bolt rod, the connecting block (4) is provided with a threaded fastening port II (45), and the bolt rod on the upper fastening plate (41) is in threaded connection with the threaded fastening port II (45).
12. A tunnel lining drainage-preventing structure as set forth in claim 11, wherein a side fastening plate (42) for secondarily fastening the drainage pipe (6) is slidably mounted on the connection block (4), a threaded fastening port I (44) is formed in the connection block (4), a bolt rod is rotatably mounted on the side fastening plate (42), and the bolt rod of the side fastening plate (42) is in threaded connection with the threaded fastening port I (44).

Description

Tunnel lining waterproof and drainage structure Technical Field The utility model relates to the technical field of tunnel construction, in particular to a tunnel lining waterproof and drainage structure. Background At present, tunnel engineering is constructed according to the principle of 'mainly draining' for reducing the water pressure behind the lining, and longitudinal and annular blind pipes, non-woven fabrics and waterproof plates are arranged between the primary support and the secondary lining so as to achieve the aim of draining underground water behind the secondary lining. The Chinese patent publication No. CN217327332U discloses a mine tunnel lining structure, which realizes drainage between an primary support layer and a secondary lining layer by arranging a drainage leveling layer and a circumferential drainage pipe between the primary support layer and the secondary lining layer, and the structure ensures that the tunnel spray film lining structure has the drainage requirement of a tunnel and the stress advantage of a spray film lining, but the structure easily influences the support strength of the primary support layer through hole drainage, and when a multi-section tunnel lining is blocked, a drainage pipe at the bottom has no way of rapidly draining seepage water, so that a tunnel lining waterproof and drainage structure capable of avoiding perforation drainage and still having a drainage function when a drainage hole of the drainage pipe is blocked is needed. Disclosure of utility model The utility model aims to solve the technical problem that the strength of a supporting structure is influenced by the drainage of holes in the conventional tunnel lining waterproof and drainage structure. The utility model is realized by the following technical scheme: The utility model provides a tunnel lining waterproof and drainage structure, includes tunnel country rock, is located the main drain pipe of tunnel country rock bottom, is used for ground drainage module, arranges initial bracing layer, waterproof sheet layer, waterproof spraying layer, secondary lining layer from tunnel country rock from outer to interior in proper order, be equipped with between initial bracing layer and the waterproof sheet layer and be used for the outer drainage layer of drainage between initial bracing layer and the waterproof sheet layer, be equipped with between waterproof spraying layer and the secondary lining layer and be used for the drainage outletting drainage plate between waterproof spraying layer and the secondary lining layer, drainage plate accepts outer drainage layer outletting water, the bottom of initial bracing layer is provided with and is used for accepting drainage plate outletting water and guides the drainage drain pipe of discharging in the main drain pipe with water, install the connection group piece that is used for drainage drain pipe extension to connect on the drainage drain pipe. In some optional technical schemes, a filling layer is arranged between the waterproof spraying layer and the secondary lining layer, the filling layer is filled with broken stone, and a waterproof spraying layer drainage plate for draining water between the waterproof spraying layer and the secondary lining layer is arranged on the joint surface of the filling layer and the secondary lining layer. In some optional technical schemes, waterproof spraying layer drainage board sets up on the drainage plate, fixed array has arranged a plurality of drainage pipe I on the waterproof spraying layer drainage board, and fixed mounting has drainage groove II on a plurality of drainage pipe I's the first end, drainage groove II and waterproof spraying layer drainage board fixed mounting, the inboard of waterproof spraying layer is pasted to drainage groove II, drainage groove II is arranged in the drainage pipe I with the water drainage between waterproof spraying layer and the secondary lining layer. In some optional technical schemes, fixedly mounted on the waterproof spray coating drainage plate is a drainage groove I, the drainage groove I is tightly attached to one surface of the filling layer, which is close to the primary support layer, a plurality of drainage catheters IV are fixedly arranged on the drainage groove I in an array manner, water between the filling layer and the secondary lining layer is drained into the drainage catheters IV by the drainage groove I, the drainage catheters IV are communicated with the drainage catheters I, and the drainage catheters IV are used for receiving water in the drainage catheters I. In some optional technical solutions, a plurality of drainage pipes III are fixedly arranged on the drainage plate, the drainage pipes III are communicated with the drainage pipes IV, and the drainage pipes III are used for receiving water in the drainage pipes IV and guiding the water into the drainage pipes. In some optional technical schemes, fixed mounting has outer drainage layer draina