CN-224214174-U - Assembly suitable for shield of subway station street crossing passageway is originated

Abstract

The utility model relates to the technical field of tunnel engineering, and particularly discloses an assembly suitable for subway station street-crossing tunnel shield initiation, which remarkably improves the efficiency and safety of subway street-crossing tunnel shield initiation by optimizing construction site layout and structure innovation. The scheme reserves the existing middle plate main structure and sets the reserved pit slots, utilizes the permanent combined bearing shield main machine, avoids the traditional temporary supporting construction, greatly shortens the construction period and reduces the material waste, the single pit slot is provided with a counterforce frame design, realizes split initiation of multiple tunnels in a limited underground space, avoids the risk of multiple synchronous operation, the hoisting equipment is closely adjacent to road arrangement and bilateral layout of a muck pool/material storage yard, enables the radius of the truck crane to cover a key area, improves the transportation efficiency in a narrow field, breaks through the limitation of a long and narrow field, adopts a split tunneling scheme, enables the construction of a short tunnel to be free from repeated hoisting of matched equipment, shortens the construction period, and is particularly suitable for a receiving well size limited scene.

Inventors

• ZHAN YANG
• PENG WEIQIANG
• WU JUNYE
• CHEN HONGHUA
• CHEN JIRUN
• Fang Chunbin
• LI WENYONG
• CHEN QIONG
• CHEN YONGHAI

Assignees

• 广东华隧建设集团股份有限公司

Dates

Publication Date

20260508

Application Date

20250626

Claims (10)

1. 1. An assembly suitable for the shield initiation of a subway station street crossing channel comprises an initiation well arranged on one side of a road and a receiving well arranged on the other side of the road; The subway station is provided with a bottom plate and a middle plate, and the middle plate extends from the rear side to the front side of the starting well; an originating platform is arranged in the originating well and comprises an originating frame and a reaction frame, wherein the originating frame is used for supporting the shield tunneling machine, the originating frame is fixed on the bottom plate, and the reaction frame is arranged on the originating frame; The device is characterized in that the middle plate is provided with a plurality of reserved pit slots with the length not longer than the length of the starting well and the width smaller than the diameter of the shield host, and only one of the reserved pit slots is provided with a reaction frame.
2. 2. The assembly suitable for subway station cross-street tunnel shield starting according to claim 1, wherein temporary supports are transversely arranged in the reserved pit slots without reaction frames.
3. 3. An assembly adapted for use in a subway station cross-street tunnel shield launch according to claim 1 and further comprising a lifting device positioned between said launch well and the roadway.
4. 4. The assembly for subway station cross-street tunnel shield initiation according to claim 1, further comprising a muck pool and a material yard, respectively located on the left and right sides of the initiation well.
5. 5. An assembly for shield initiation of a subway station overhead tunnel according to claim 3, further comprising a trolley zone, said trolley zone being located on a side of the initiation well remote from said lifting device, a bridge and a plurality of trolleys being provided, said bridge being adapted to carry a main conduit, said main conduit being adapted to connect said trolleys and a shield host located in the initiation well.
6. 6. An assembly adapted for use in subway station cross-aisle shield initiation according to claim 5 wherein a plurality of said trolleys presents a lateral layout parallel to the initiation well or roadway.
7. 7. An assembly for use in a subway station cross-street tunnel shield launch according to claim 5 wherein said trolley area is further provided with additional piping for extending said main piping.
8. 8. An assembly adapted for use in subway station cross-street tunnel shield origination as claimed in claim 5, wherein the distance between the origination well and the receiving well is no more than 2 times the total length of a plurality of said trolleys.
9. 9. The assembly suitable for shield initiation of a subway station street passageway according to any one of claims 1-8, further comprising a ground cooling tank, a middle plate cooling tank and a booster pump which are sequentially connected through a water supply pipeline, wherein the booster pump is connected with the shield host.
10. 10. The assembly for shield initiation of a subway station cross-street tunnel according to any one of claims 1 to 8, wherein the initiation frame top is lower than the middle plate and fixedly connected with the middle plate, the reaction frame is arranged on the initiation frame, and the initiation frame top is lower than the middle plate and fixedly connected with the middle plate.

Description

Assembly suitable for shield of subway station street crossing passageway is originated Technical Field The utility model relates to the field of tunnel engineering, in particular to an assembly suitable for shield initiation of a subway station street crossing channel. Background Along with the acceleration of the urban process, the scale of subway construction is continuously enlarged, and factors such as stratum conditions, underground space environments, ground sites and the like are increasingly required for the technology and economy of subway construction. Among various subway construction scenes, the initial tunneling difficulty of subway street channels is particularly prominent. The method has the advantages that the ground traffic flow is larger, the available sites on two sides of a road are narrow, the portal cranes cannot be used, the requirements on site arrangement are high, multiple tunnels are required to be excavated around the street crossing channel, the ground sites and underground space are further extruded, tunneling equipment and supporting systems thereof are difficult to install underground, the shield of the street crossing channel is required to be at the middle plate height instead of the bottom plate height, and due to the fact that the tunneling equipment is heavy and the starting reaction force is large, a hall-filling scaffold is required to be erected, even a temporary middle plate is required to serve as a shield starting platform, the construction time is long, and the construction period is influenced. Therefore, development of a mature complete construction scheme is needed, construction sites and underground space can be effectively utilized, construction of a shield starting platform is simplified, multi-tunnel starting requirements are considered, and accordingly risks of shield starting of subway stations are reduced, and construction period is shortened. Disclosure of utility model The utility model aims to overcome at least one defect of the prior art, and provides an assembly suitable for the shield launching of the subway station street-crossing channel, which can adapt to narrow ground places and limited underground spaces, ensure the safety of multi-tunnel launching and shorten the construction period. The technical scheme adopted by the utility model is that the assembly suitable for the shield start of the subway station street crossing channel comprises a start well arranged on one side of a road and a receiving well arranged on the other side of the road; The subway station is provided with a bottom plate and a middle plate, and the middle plate extends from the rear side to the front side of the starting well; an originating platform is arranged in the originating well and comprises an originating frame and a reaction frame, wherein the originating frame is used for supporting the shield tunneling machine, the originating frame is fixed on the bottom plate, and the reaction frame is arranged on the originating frame; The middle plate is provided with a plurality of reserved pit slots with the length not longer than the length of the originating well and the width smaller than the diameter of the shield host, and only one of the reserved pit slots is provided with a reaction frame. The originating platform provided by the utility model does not remove all the middle plates in the originating well, but keeps most structures of the middle plates, and only digs out reserved pits for accommodating the shield machine. The existing middle plate is used as a supporting foundation, construction of a traditional full scaffold or a temporary middle plate is omitted, construction time is shortened, material waste is reduced, the permanent structure middle plate and the temporary structure originating platform in the shield originating process bear load jointly, structural stability is improved, pit slot design simplifies subsequent shield machine installation steps, and repeated adjustment of the middle plate structure is avoided. When the middle plate is used for excavating a plurality of tunnels at high height, a plurality of reserved pit slots are arranged, and the shield host machine is independently started in a certain reserved pit slot. Because the reaction force of single shield machine initiation is great, can not a plurality of simultaneously initiate, consequently a plurality of reserve pit slots in only one be equipped with the reaction frame to reduce the potential safety hazard. Further, temporary supporting tops are transversely arranged in the reserved pit slots without the reaction frames. The method is used for enhancing the integral strength of the middle plate and avoiding that the originating platform cannot bear the reaction force of originating because of the lack of the reserved pit. Further, the assembly suitable for the shield initiation of the subway station street crossing channel further comprises hoisting equipment positioned between th