DE202018006560U1 - Structure of a prefabricated assembly lining for a tunnel - Google Patents

Abstract

Structure of a prefabricated assembly lining of a tunnel, characterized in that the prefabricated assembly lining (1) consists of a prefabricated assembly lining arch plate which is divided in the longitudinal direction into several rings, the rings being divided into several pie-shaped segments, with one in the longitudinal direction in the prefabricated assembly lining arch plate A continuous screw hole (18) is provided, into which a high-strength screw (3) can be inserted, and wherein in each case two prefabricated assembly lining arch plates which are adjacent in the longitudinal direction can be connected to the high-strength screw (3) via a high-strength connector (6) provided on a butt joint, that the two longitudinally adjacent prefabricated assembly liner sheets are spliced.

Description

The invention belongs to the technical field of tunnel traffic technology and relates in particular to a structure of a prefabricated assembly lining of a tunnel.

When building mountain roads and railway tunnels, with the exception of a few tunnels built using the shield tunneling method or with TBM and with segments assembled on site, most of the tunnels were built using the new Austrian method (drilling and blasting, etc.), around cast-in-place linings. Given the weak surrounding rock condition, the lining should be erected in a timely manner and not too far from the quarry to ensure the safety of the tunnel construction. There are also requirements for the timing of the lining construction after the tunnel is excavated. The in-situ concrete lining requires a lot of work steps such as the creation of the steel reinforcement, the erection of formwork and the pouring of the in-situ concrete, which affects the construction progress of the new Austrian construction method. The on-site cast lining is sensitive to environmental influences and the construction quality is not easy to control. In addition, during tunnel construction under special conditions such as high altitudes in the mountains, the construction of on-site cast linings is difficult under conditions of low temperature and low oxygen concentration. Under the influence of freezing and swelling, leaks, icing and other damage can occur during the service life of the tunnel.

How effective measures can be taken to shorten the construction time of the on-site cast lining in the tunnel, to ensure the construction quality and to accelerate the progress of the tunnel construction has always been a concern of the tunnel construction technicians. Currently, environmental protection and environmentally friendly building technologies are attracting more and more attention worldwide. People strongly advocate the use of prefabricated assembly structure systems. With the improvement of technical technology and the level of equipment manufacturing, the use of prefabricated linings for tunnel construction is sure to become a direction for the development of tunnel technology.

The purpose of the present invention is to provide a prefabricated structure for tunnel lining. The method of manufacturing the prefabricated tunnel lining elements with holes and inserting high-strength screws into the holes for connection can solve the problem of assembling the prefabricated lining without supporting structures behind the prefabricated elements, as well as the quick assembly and precise positioning of the prefabricated lining during construction. At the beginning of the assembly of the prefabricated assembly liner, a temporary double headed bolt connection is used in front of the connector and a cord rubber plate, a temporary fastening ring plate and a flap are installed in sequence to create a temporary space between the assembled liner and the surrounding rock . This creates a closed structure from the assembled prefabricated parts. Then the joints between the prefabricated parts are poured and closed with the potting pipe embedded on the prefabricated assembly lining, in order to fill the cavity between the prefabricated assembly lining and the surrounding rock, to avoid the escape of potting compound and to connect the prefabricated assembly lining with the surrounding rock. The task is to install the prefabricated elements safely and quickly.

These objects are achieved with a structure of a prefabricated assembly lining of a tunnel according to claim 1. Further embodiments are given in the dependent claims.

• Die vorgefertigte Montageauskleidungsstruktur des Tunnels kann wie folgt beschrieben werden:
  • Die vorgefertigte Montageauskleidung der Montagestruktur besteht aus Lichtbogenplatten aus vorgefertigten Montageauskleidungen, die in Längsrichtung in mehrere Ringe und in Umfangsrichtung in mehrere tortenstückförmige Segmente unterteilt sind.

The technical scheme adopted by the present invention is:

• The prefabricated assembly lining structure of the tunnel can be described as follows:
  • The prefabricated assembly lining of the assembly structure consists of arc plates made of prefabricated assembly linings, which are divided in the longitudinal direction into several rings and in the circumferential direction into several pie-shaped segments.

The prefabricated liner sheet is provided with a longitudinal hole and a high strength screw is inserted into this dedicated hole. The high-strength screws in the two prefabricated elements lying next to one another in the longitudinal direction are connected by a high-strength connecting element which is attached to the butt seam, so that the two longitudinally adjacent prefabricated arched lining panels can be connected to one another.

The prefabricated liner arch plate of the assembly is provided with an embedded potting pipe that runs perpendicular to the circumferential direction and penetrates the element.

The prefabricated liner sheet of the assembly has grooves formed in the holes on the longitudinal end surface. The The high-strength connecting element that connects the two high-strength longitudinal screws is a nut or a threaded sleeve. The nut or threaded sleeve is located in a groove in order to produce the longitudinal phase. The two adjacent prefabricated liner arch panels are firmly connected to one another.

The inside of the high-strength connecting element is provided with a steel plate seal.

On the peripheral end face of the prefabricated lining, an auxiliary casting closure structure is arranged for closing the gap between the tunnel excavation contour line and the prefabricated lining. The potting aid plugging structure contains several temporary fixed rings, which are arranged in the circumferential direction and consist of a cord rubber plate.

One end of the cord rubber plate is attached to the longitudinal end face of the prefabricated liner sheet, and the outside is pressed onto the temporary fastening ring plate and fastened by temporary fastening bolts, washers and temporary fastening nuts. The other end of the cord rubber plate is pressed onto the tunnel opening. This closes the gap between the contour line and the prefabricated assembly lining.

A flap is arranged on the outer longitudinal end of the temporary fastening ring plate plate, and the flap is arranged on the outside of the cord rubber plate.

The flap is installed through the fixed plate and the pin shaft on the temporary fixed ring plate.

The upper end of the fixed is attached to the temporary mounting ring plate and the lower end is fitted with a horizontal pin sleeve.

On both sides of the upper end of the flap, pin sleeves are also provided, which are located on both sides of the pin sleeve of the fixed plate and are connected by inserting the pin shafts.

The end of the pin shaft has a split pin hole and a split pin.

The temporary fixing bolts for temporarily fixing the fixing ring plate are double-headed temporary fixing bolts, and the inside is firmly connected to the high-strength screw on the prefabricated liner arch plate through the high-strength connector on the butt joint.

• Schritt 1: Nachdem der Tunnel in einem bestimmten Abstand von der Tunnelfläche ausgehoben wurde, wird mit der Montage der vorgefertigten Montageauskleidung begonnen. Vor dem Zusammenbau wird zuerst das umgebende Gestein abgetrennt und dann wird die hochfeste Schraube in die vorgefertigte Montageauskleidung hineingedreht, so dass nach dem Positionieren eine hohe Festigkeit entsteht. Der Verbinder ist fixiert, die vorgefertigte Montageverkleidung wird von unten nach oben symmetrisch auf beiden Seiten zusammengebaut, und schließlich wird der obere Block eingesetzt.
• Schritt 2: Nachdem die vorgefertigte Montageauskleidung zu einem Ring zusammengebaut wurde, wird die hochfeste Schraube mit dem doppelseitigen temporären festen Bolzen verbunden, und dann werden die Kordel-Gummi-Platte und die temporäre Befestigungsringplatte nacheinander unter Verwendung von Unterlegscheiben und temporärer Befestigungen auf dem doppelseitigen temporären festen Bolzen installiert. Die Muttern werden nacheinander eingebracht und befestigt, bis der gesamte Ring zusammengebaut ist und die Kordel-Gummi-Platte platziert ist.
• Schritt 3: Anschließend wird die Klappe installiert. Diese wird mit dem Stift auf der festen Platte befestigt, die mit der temporären Befestigungsringplatte verbunden ist. Die Installation erfolgt nacheinander, bis der gesamte Ring installiert ist. Die Klappe ist dadurch platziert.
• Schritt 4: Der rückseitige Verguss erfolgt durch das eingebettete Vergussrohr, das auf der vorgefertigten Baugruppenauskleidung vorgesehen ist. Nachdem die Festigkeit der Vergussmasse den Anforderungen entspricht, wird die zusätzliche Vergussverschlussstruktur entfernt und die nächste vorgefertigte Baugruppenauskleidung zusammengebaut.

The construction of the pre-fabricated tunnel liner assembly structure described may include the following steps:

• Step 1: After the tunnel has been excavated at a certain distance from the tunnel surface, the assembly of the prefabricated assembly lining is started. Before assembly, the surrounding rock is first cut off and then the high-strength screw is screwed into the prefabricated assembly lining, so that a high level of strength is created after positioning. The connector is fixed, the prefabricated assembly cladding is assembled symmetrically on both sides from bottom to top, and finally the top block is inserted.
• Step 2: After the prefabricated assembly liner is assembled into a ring, the high strength screw is connected to the double-sided temporary fixed bolt, and then the cord rubber plate and the temporary fastening ring plate are connected one by one using washers and temporary fasteners on the double-sided temporary fixed bolt installed. The nuts are inserted and tightened one at a time until the entire ring is assembled and the cord rubber plate is in place.
• Step 3: Then the flap is installed. This is fastened with the pin on the fixed plate, which is connected to the temporary fastening ring plate. The installation takes place one after the other until the entire ring is installed. This places the flap.
• Step 4: The rear potting is carried out through the embedded potting pipe, which is provided on the prefabricated assembly lining. After the strength of the potting compound meets the requirements, the additional potting closure structure is removed and the next prefabricated assembly liner is assembled.

• Zunächst wird bei der vorliegenden Erfindung im Vergleich zu der traditionellen neuen österreichischen Methode (Bohr- und Strahlverfahren) zum Aufbau der vor Ort gegossenen Auskleidung des Tunnels eine vorgefertigte Montageauskleidung verwendet, die in einer Fabrik hergestellt werden kann, eine zuverlässigere Qualität aufweist, die Arbeitsbelastung im Tunnel verringert und die Konstruktionseffizienz verbessert. Zweitens wird die Montageverkleidung durch Einsetzen hochfester Schrauben in dafür vorgesehene Löcher verbunden, wodurch die Bequemlichkeit des Anschlusses und der Befestigung gewährleistet und eine präzise Messsteuerung unterstützt wird, um die Montage der vorgefertigten Montageverkleidung schnell abzuschließen. Zusätzlich kann bei der vorliegenden Erfindung nach Abschluss der Montage der vorgefertigten Baugruppenauskleidung gleichmäßig hinter der Auskleidung verfugt werden, um eine kraftschlüssige Verbindung zwischen der Montageauskleidung und dem umgebenden Gestein sicherzustellen. Verglichen mit der herkömmlichen Konstruktion mit Spritzbeton ist das hier beschriebene Verfahren zum Steuern der Positionierungsgenauigkeit durch die hohe Genauigkeit der vorgefertigten Baugruppenauskleidungsbaugruppe erheblich praktischer. Darüber hinaus kann durch das Verfahren, bei dem zuerst die Auskleidung zusammengebaut und dann verfugt wird, eventuelle Abweichungen während des Auskleidungsmontageprozesses korrigiert und die Anhäufung von Fehlern vermieden werden, sowie die Montagegenauigkeit der Fertigteilkonstruktion der vorgefertigten zusammengebauten Auskleidung sichergestellt werden.

The invention has the following advantages:

• First, in the present invention, compared to the traditional new Austrian method (drilling and blasting) for building the on-site cast lining of the tunnel, a prefabricated assembly lining is used, which can be manufactured in a factory, has a more reliable quality, the workload in the Reduces tunnels and improves construction efficiency. Second is the assembly fairing connected by inserting high-strength screws in holes provided for this purpose, which ensures the convenience of connection and fastening and supports precise measurement control in order to quickly complete the assembly of the prefabricated assembly cladding. In addition, in the present invention, after the assembly of the prefabricated assembly lining can be evenly grouted behind the lining in order to ensure a non-positive connection between the assembly lining and the surrounding rock. Compared to traditional shotcrete construction, the method described here for controlling the positioning accuracy is much more practical due to the high accuracy of the prefabricated assembly liner assembly. In addition, the method of first assembling the liner and then grouting can correct any discrepancies during the liner assembly process and avoid the accumulation of errors, as well as ensure the assembly accuracy of the precast construction of the prefabricated assembled liner.

• 1 zeigt die Längsmontage und Positionierung der vorgefertigten Auskleidung.
• 2 ist ein schematisches Diagramm der Längsverbindung der vorgefertigten hochfesten Auskleidungsschraube.
• 3 ist die Vorderansicht des Vergussverschlusssystems hinter der Auskleidung.
• 4 ist ein Strukturdiagramm der temporären Befestigungsringplatte.
• 5 ist eine Seitenansicht des Vergussverschlusssystems hinter der Auskleidung.
• 6 ist eine detaillierte Ansicht des Vergießens und Verstopfens hinter der vorgefertigten Auskleidung.
• 7 ist das Anschlussdiagramm der vorgefertigten hochfesten Auskleidungsschraube.
• 8 ist eine Explosionsansicht von 7.
• 9 ist eine Ansicht der festen Platte.
• 10 ist eine Seitenansicht der festen Platte.
• 11 ist eine Ansicht der Klappe.
• 12 ist eine Seitenansicht der Klappe.
• 13 ist ein Strukturdiagramm der Kordel-Gummi-Platte.
• 14 ist ein Strukturdiagramm der Stiftwelle.
• 15 ist ein Strukturdiagramm eines Splints.

The invention and the technical environment are explained in more detail with reference to figures.

• 1 shows the longitudinal assembly and positioning of the prefabricated lining.
• 2 Figure 13 is a schematic diagram of the longitudinal connection of the preformed high strength liner bolt.
• 3 Figure 13 is the front view of the potting closure system behind the liner.
• 4th Fig. 13 is a structural diagram of the temporary fastening ring plate.
• 5 Figure 3 is a side view of the potting closure system behind the liner.
• 6th Figure 4 is a detailed view of the potting and plugging behind the prefabricated liner.
• 7th is the connection diagram of the pre-fabricated high strength liner screw.
• 8th FIG. 3 is an exploded view of FIG 7th .
• 9 Fig. 3 is a view of the fixed plate.
• 10 Fig. 3 is a side view of the fixed plate.
• 11 is a view of the flap.
• 12th Figure 3 is a side view of the flap.
• 13th Fig. 13 is a structural diagram of the cord rubber sheet.
• 14th Fig. 13 is a structural diagram of the pin shaft.
• 15th Fig. 3 is a structural diagram of a split pin.

The invention is described in more detail below with reference to the accompanying figures and specific exemplary embodiments.

The invention relates to a prefabricated tunnel liner assembly structure. The prefabricated assembly lining 1 consists of a prefabricated assembly liner arch panel which is spliced longitudinally into several rings and circumferentially divided into several pie-shaped segments, with a longitudinally penetrating screw hole in the prefabricated assembly liner arch panel 18th is provided in which the high-strength screw 3 is introduced. The two longitudinally adjacent high-strength screws 3 are attached to the prefabricated liner arch panel through the high-strength connector provided on the butt joint 6th connected so that the two longitudinally adjacent prefabricated liner arch panels can be connected to one another. The number and size of the screw holes 18th is determined according to the comprehensive calculation of the thickness and weight of the prefabricated lining blocks. The diameter of the screw hole 18th should be 5 to 10 mm larger than the diameter of the high-strength screw 3 , and the larger value can be used because large errors can occur during the assembly process. During the assembly process, the assembly error of each ring should be strictly controlled in order to avoid excess length of the assembly section. The increase in excess length leads to its error accumulation limit. The length of the high strength screw 3 should generally be the ring width of the pre-fabricated assembly liner 1 and certain errors should be allowed for so that there is room for adjustment in the actual assembly and construction.

The pre-fabricated assembly liner sheet is with an embedded potting tube 4th provided that runs perpendicular to the circumferential direction and penetrates the plate, and that for grouting behind the prefabricated assembly lining 1 used to fill the openings between the prefabricated assembly liner 1 and the surrounding rock 5 to fill and the stability of the prefabricated assembly lining due to the tight adhesion transfer force 1 to ensure. The pre-embedded potting pipe 4th can also be partially closed first and then pushed open as required after assembly.

The longitudinal end face of the prefabricated assembly liner arch plate in the area of the screw hole 18th is grooved, and the high-strength connector 6th representing the two longitudinal sections of the high-strength screw 3 connects is a nut or a threaded sleeve, and the nut or threaded sleeve is located in the groove. The two longitudinally adjacent prefabricated liner arch panels are firmly connected to one another. To prevent the partial stress of the prefabricated assembly lining 1 becomes too large, a steel plate lining can 7th be provided in order to increase the force transmission area and the local compressive strength of the prefabricated assembly lining 1 to ensure. The high-strength connector 6th should be able to build a certain prestress to ensure that the pre-fabricated assembly liner 1 temporarily attached behind it without support.

The circumferential end face of the prefabricated assembly liner 1 is provided with an auxiliary sealing structure to close the gap between the tunnel excavation contour 15th and the prefabricated assembly lining 1 to seal to prevent channeling behind the liner during grouting and to meet requirements. The temporary grouting components can be removed after grouting is complete and its strength meets the requirements. These components can be reused. The potting auxiliary fastener structure includes a plurality of temporary attachment ring plates 8th and a circumferentially arranged cord rubber plate 10 ; one end of the cord rubber plate 10 is attached to the longitudinal end face of the prefabricated liner arch panel, and the temporary fastening ring panel 8th is pressed on the outside. The temporary fastening ring plate 8th is secured by temporary fastening bolts 11 , Washers 13th and temporary fastening nuts 12th attached, and the other end of the cord rubber plate 10 is outside the gap between the tunnel excavation contour 15th and the prefabricated assembly lining 1 pressed. One flap 9 is at the outer longitudinal end of the temporary fastening ring plate 8th provided, and the flap 9 is located outside of the cord rubber plate 10 . The flap 9 is on the temporary mounting ring plate 8th through the fixed plate 17th and the pin shaft 19th installed, the top of the fixed plate 17th is on the temporary mounting ring plate 8th attached, and the lower end is with a cross pin sleeve 16 Mistake. At the top of the flap 9 are also cross pin sleeves 16 provided on both sides and located on both sides of the fixed plate 17th and are by inserting a pin shaft 19th connected. The end of the pin shaft 19th is with a pin hole 20th provided, and a split pin 21 is provided. The temporary fastening bolt of the temporary fastening ring plate 8th is a temporary double head mounting bolt 11 , and its inside is through the high-strength connector 6th at the butt joint with the high-strength screw 3 connected to the prefabricated assembly liner arch panel. The length of the flap 9 should be slightly larger than the distance between the outside of the pre-fabricated assembly 1 and the surrounding rock 5 , and they can be stable on the surrounding rock 5 supported to play a clogging role during the potting process. The cord rubber plate 10 should be 10 to 15 cm longer than the length of the flap 9 to accommodate the deformation that can be caused during the potting process without leakage.

• Schritt 1: Nachdem der Tunnel in einem bestimmten Abstand von der Tunnelfläche ausgehoben wurde, wird mit dem Zusammenbau der vorgefertigten Baugruppenauskleidung 1 begonnen. Vor dem Zusammenbau wird zuerst das umgebende Gestein 5 ohne Unteraushub abgetrennt, um den Montageraum der vorgefertigten Montageverkleidung nicht zu beeinträchtigen.
• Dann wird die hochfeste Schraube 3 eingeführt, und in die vorgefertigte Baugruppenauskleidung 1 eingesetzt. Dann wird sie nach dem Positionieren mit dem hochfesten Verbinder 6 verbunden, wobei die vorgefertigte Baugruppenauskleidung 1 von unten nach oben symmetrisch auf beiden Seiten zusammengebaut wird und schließlich der obere Block eingesetzt wird.
• Schritt 2: Nachdem die vorgefertigte Baugruppenauskleidung 1 zu einem Ring zusammengebaut wurde, wird die hochfeste Schraube 3 mit dem temporären Doppelkopf-Befestigungsbolzen 11 verbunden, und dann werden die Kordel-Gummi-Platte 10 und die temporäre Befestigungsringplatte 8 nacheinander auf dem temporären Doppelkopf-Befestigungsbolzen 11 installiert. Hierbei werden Unterlegscheiben 13 und temporäre Befestigungsmuttern 12 zum Befestigen verwendet. Die Installation geschieht nacheinander, bis der volle Ring zusammengebaut ist und die Kordel-Gummi-Platte 10 platziert werden kann.
• Schritt 3: Die Klappe 9 wird mit dem Stift 19 auf der feststehenden Platte 17 befestigt, die mit der temporären Befestigungsringplatte 8 verbunden ist. Die Installation geschieht nacheinander, bis der gesamte Ring zusammengebaut ist und die Klappe 9 platziert werden kann.
• Schritt 4: Eine Rückverpressung wird durch das eingebettete Vergussrohr 4 durchgeführt, das auf der vorgefertigten Baugruppenauskleidung 1 vorgesehen ist. Im Allgemeinen sollte das Verpressen zweimal durchgeführt werden. Während des anfänglichen Vergießens ist es im Allgemeinen erforderlich, ein Fließmittel hinzuzufügen, um den Verguss durchlässig zu machen, den Vergussdruck streng zu kontrollieren und sicherzustellen, dass die vorgefertigte Baugruppenauskleidung 1 nach dem anfänglichen Vergießen vollständig und kraftschlüssig gestützt wird. Nachdem die Festigkeit des Mörtels die Anforderungen erfüllt hat, können temporäre Vergusshilfsteile wie die temporäre Befestigungsringplatte 8 entfernt und die nächste vorgefertigte Baugruppenauskleidung 1 montiert werden. Nach dem anfänglichen Verfugen sollte eine gewisse Verformung des umgebenden Gesteins zugelassen werden, und der Vergusskörper kann einer bestimmten Verformung standhalten.
• Schritt 5: Nachdem die vorgefertigte Baugruppenauskleidung 1 für eine bestimmte Länge zusammengebaut wurde, wird bei Bedarf eine zusätzliche Injektion durchgeführt, um die Kompaktheit zwischen der vorgefertigten Baugruppenauskleidung 1 und dem umgebenden Gestein 5 sicherzustellen.

Specifically, the method of construction of the prefabricated tunnel liner assembly structure mentioned above includes the following steps:

• Step 1: After the tunnel has been excavated at a certain distance from the tunnel surface, the assembly of the prefabricated assembly lining begins 1 began. Before assembling, the surrounding rock is first made 5 separated without excavation so as not to impair the assembly space of the prefabricated assembly cladding.
• Then the high strength screw 3 introduced, and into the prefabricated assembly liner 1 used. Then after positioning it with the high strength connector 6th connected, with the prefabricated assembly liner 1 is assembled symmetrically from bottom to top on both sides and finally the upper block is inserted.
• Step 2: having the prefabricated assembly liner 1 When assembled into a ring, it becomes the high-strength screw 3 with the temporary double head fastening bolt 11 connected, and then the cord rubber plate 10 and the temporary mounting ring plate 8th one after the other on the temporary double-headed fastening bolt 11 Installed. This is where washers 13th and temporary fastening nuts 12th used for fastening. The installation is done in sequence until the full ring is assembled and the cord-rubber plate 10 can be placed.
• Step 3: the flap 9 is done with the pen 19th on the fixed plate 17th attached to the temporary attachment ring plate 8th connected is. The installation happens one at a time until the entire ring is assembled and the flap 9 can be placed.
• Step 4: A back grouting is done through the embedded potting pipe 4th performed that on the prefabricated assembly liner 1 is provided. In general, pressing should be carried out twice. During the initial potting, it is generally necessary to add a flux to make the potting permeable, tightly control the potting pressure, and ensure that the pre-fabricated assembly liner 1 is completely and positively supported after the initial casting. After the strength of the mortar has met the requirements, temporary grouting accessories such as the temporary fastening ring plate 8th removed and the next prefabricated assembly liner 1 to be assembled. After the initial grouting, some deformation of the surrounding rock should be allowed and the potting body can withstand a certain deformation.
• Step 5: having the prefabricated assembly liner 1 for a certain length, an additional injection is done if necessary to maintain compactness between the prefabricated assembly liner 1 and the surrounding rock 5 to ensure.

This is only a specific example of application of the present invention and does not represent a limitation on the scope of the invention.

List of reference symbols

1

prefabricated assembly lining

2

prepared connection holes

3

high strength screws

4th

embedded potting pipes

5

surrounding rock

6th

high strength connector

7th

Steel plate linings

8th

temporary fastening ring plate

9

flap

10

Cord rubber plate

11

temporary double head fastening bolt

12th

temporary fastening nut

13th

Washer

14th

Joints behind the installed assembly lining

15th

Tunnel excavation contour

16

Cross pin sleeve

17th

Mounting plate

18th

Screw hole

19th

Pin shaft

20th

Pinhole

21

Sapwood

22nd

Fixing hole in the cord rubber plate.

Claims (9)

Structure of a prefabricated assembly lining of a tunnel, characterized in that the prefabricated assembly lining (1) consists of a prefabricated assembly lining arch plate which is divided in the longitudinal direction into several rings, the rings being divided into several pie-shaped segments, with one in the longitudinal direction in the prefabricated assembly lining arch plate A continuous screw hole (18) is provided, into which a high-strength screw (3) can be inserted, and wherein in each case two prefabricated assembly lining arch plates which are adjacent in the longitudinal direction can be connected to the high-strength screw (3) via a high-strength connector (6) provided on a butt joint, that the two longitudinally adjacent prefabricated assembly liner sheets are spliced. Structure of a prefabricated assembly lining of a tunnel Claim 1 , characterized in that an embedded potting pipe (4) is arranged perpendicular to the circumferential direction and the prefabricated assembly liner sheet is penetrated. Structure of a prefabricated assembly lining (1) of a tunnel Claim 1 , characterized in that the screw hole (18) on the longitudinal end face of the prefabricated assembly liner arch plate is provided with a groove, wherein the high-strength connector (6) which connects the two longitudinal sections of the high-strength screw (3) consists of a nut or a threaded sleeve, and wherein the nut or the threaded sleeve is located in the groove, so that two prefabricated assembly liner arch panels which are adjacent in the longitudinal direction are connected to one another in a tight and force-locking manner. Structure of a prefabricated assembly lining of a tunnel Claim 3 , characterized in that a steel plate seal (7) is provided within the high-strength connector (6). Structure of a prefabricated assembly lining of a tunnel Claim 3 , characterized in that the prefabricated assembly liner (1) is provided with an auxiliary casting closure structure for sealing the gap between a tunnel excavation contour (15) and the prefabricated assembly lining (1) on the peripheral end surface, the auxiliary casting closure structure having a plurality of temporary fastening ring plates (8) and cord -Rubber plates (10) arranged in the circumferential direction, one end of the cord rubber plate (10) is attached to the longitudinal end surface of the prefabricated assembly liner sheet, the outer side of which is pressed by the temporary fastening ring plate (8) and by temporary Fastening bolts, washers (13) and temporary fastening nuts (12) is attached, and the other end of the cord rubber plate (10) is pressed outside the gap between a tunnel excavation contour (15) and the prefabricated assembly lining (1). Structure of a prefabricated assembly lining of a tunnel Claim 5 , characterized in that a flap (9) is provided at the outer longitudinal end of the temporary fastening ring plate (8), the flap (9) being located outside the cord rubber plate (10). Structure of a prefabricated assembly lining of a tunnel Claim 6 , characterized in that the flap (9) is installed on the temporary fastening ring plate (8) through a fastening plate (17) and a pin shaft (19); the upper end of the fastening plate (17) being attached to the temporary fastening ring plate (8), the lower end being provided with a transverse pin sleeve (16); and on both sides of the upper end of the flap (9) also transverse pin sleeves (16) are provided, which are located on both sides of the fastening plate (17) and are connected to one another by inserting the pin shafts (19). Structure of a prefabricated assembly lining of a tunnel Claim 7 , characterized in that the end of the pin shaft (19) is provided with a pin hole (20) and a split pin (21). Structure of a prefabricated assembly lining of a tunnel Claim 5 , characterized in that the temporary fastening bolt of the temporary fastening ring plate (8) is a temporary double-head fastening bolt (11), the inside of which is fastened with the high-strength screw (3) to the prefabricated assembly lining arch plate through the high-strength connector (6) at the butt joint.

Images