Anti-gushing device for shield launching construction of water-rich layer
By designing an extension ring with arc-shaped single-piece splicing and a double-layer water-stop curtain sealing structure, the problems of installation complexity and insufficient sealing of traditional subway shield tunneling starting devices are solved, enabling rapid water stoppage and visual inspection, and preventing water and sand inrush.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-03-10
AI Technical Summary
Traditional subway tunnel boring machine (TBM) launching devices are complex in structure, rely on large hoisting equipment, have insufficient sealing, and lack real-time grouting and visual inspection, leading to soil erosion and water and sand inrush problems.
Design an extension ring composed of arc-shaped single-piece panels, equipped with emergency grouting holes and observation windows, and adopt a double-layer water-stop curtain and folding flap sealing structure to achieve rapid grouting and visual inspection, thereby enhancing sealing performance.
It simplifies the installation process, improves sealing and rapid water-stopping capabilities, prevents water gushing from the opening, and saves construction time and manpower.
Smart Images
Figure CN121630484A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of subway construction, and particularly relates to a water-rich layer shield launching construction anti-surge device. BACKGROUND
[0002] The traditional extension ring for subway shield launching is of a whole structure, and needs to be installed by relying on large hoisting equipment (such as a crawler crane), which has high requirements for the space of the construction site; the sealing mode mainly relies on rubber curtain or water stop strip sealing, and if the construction precision of the portal is insufficient (such as a deviation of the embedded steel ring > 50 mm), gaps are prone to occur, resulting in water and soil loss or water and sand gushing; there is a lack of real-time grouting or rapid water stop design and visual inspection, and when leakage occurs, the grouting plugging effect is unpredictable.
[0003] Therefore, it is urgent to design a water-rich layer shield launching construction anti-surge device. SUMMARY
[0004] In view of the problems existing in the prior art, the water-rich layer shield launching construction anti-surge device is disclosed in the application, and the following technical scheme is specifically disclosed. A water-rich layer shield launching construction anti-surge device, comprising an extension ring, the extension ring is composed of a plurality of arc monomer plates, a plurality of emergency grouting holes are arranged on the outer side of the extension ring, a plurality of observation windows are arranged on the outer side of the extension ring, arc flanges are respectively welded on the outer sides of both ends of each arc monomer plate, a plurality of arc flanges on the same side are butted to form a ring flange, and a sealing structure is fixedly connected to one end of the ring flange near the portal through bolts.
[0005] Further, the number of the emergency grouting holes is four, the four emergency grouting holes are uniformly distributed along the circumference of the extension ring, and the number of the observation windows is two.
[0006] Further, flange plates are fixedly connected to both sides of each arc monomer plate, and the adjacent two flange plates of the two arc monomer plates are fixedly connected through bolts.
[0007] Further, a plurality of rib plates are uniformly arranged on the outer sides of the arc monomer plates.
[0008] Further, the sealing structure comprises two layers of water stop curtain fabrics and a folding flap, the folding flap comprises a flap and a fixed plate with a bolt hole, one end of the flap is hinged to one end of the fixed plate, the two layers of water stop curtain fabrics are located between the fixed plate and the ring flange near the portal, and the fixed plate, the two layers of water stop curtain fabrics and the ring flange are fixed through bolts.
[0009] Further, each of the emergency grouting holes is detachably provided with a grouting pipe with a grouting valve.
[0010] Compared with the prior art, the present application has the following advantages: The extension ring is composed of a plurality of arc-shaped single body plates, and the weight of each component is small, facilitating installation and saving construction personnel and time; the extension ring is provided with emergency grouting holes and observation windows, which can quickly grout water and visually check the grouting plugging condition of the starting hole door in the event of gushing water; the sealing structure of double water-stopping canvas + folding flap is adopted to form a multi-layer sealing barrier, which significantly improves the sealing between the shield machine and the hole door and prevents gushing of the hole door. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 is a top view of the extension ring in the present application.
[0012] Figure 2 is a sectional view of the extension ring in the present application.
[0013] Figure 3 is Figure 2 is a sectional view of A in the present application.
[0014] Figure 4 is Figure 2 is a sectional view of B in the present application.
[0015] Figure 5 is a schematic view of the overall structure of the present application.
[0016] Figure 6 is a schematic view of the folding flap in the present application.
[0017] 1-arc-shaped single body plate, 2-emergency grouting hole, 3-observation window, 4-arc-shaped flange plate, 5-folding flap, 51-fixing plate, 52-flap, 6-flange plate, 7-rib plate. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0019] Reference Figures 1-6The utility model provides a kind of water-rich layer shield launching construction blowout device, including extension ring, extension ring is connected by a plurality of arc single body board 1, the outside of extension ring is provided with a plurality of emergency grouting hole 2, the outside of extension ring is provided with a plurality of observation window 3, the outside of both ends of each arc single body board 1 is welded with arc flange plate 4 respectively, the same side a plurality of arc flange plate 4 is docked into annular flange plate, and sealing structure is fixedly connected on the annular flange plate of one end close to portal, and extension ring is connected by a plurality of arc single body board 1, and the weight of single component is small, easy to install, and construction personnel and construction time can be saved;Emergency grouting hole 2 and observation window 3 are provided on extension ring, and when sudden gushing, quick grouting water stop can be checked and launching portal grouting plugging condition can be visualized.
[0020] In the embodiment, the number of emergency grouting holes 2 is four, and the four emergency grouting holes 2 are evenly distributed along the circumference of the extension ring, so as to meet the grouting demand in multiple directions.
[0021] In the embodiment, the flange plate 6 is fixedly connected to the two sides of each arc single body board 1, and the adjacent two flange plates 6 of the two arc single body boards 1 are fixedly connected by bolts, so as to facilitate assembly and disassembly.
[0022] In the embodiment, the outer side of the arc single body board 1 is uniformly provided with a plurality of rib plates 7, so as to improve the strength of the structure.
[0023] In the embodiment, the sealing structure includes two layers of water stop canvas and a folding flap 5, the folding flap 5 includes a flap 52 and a fixed plate 51 with a bolt hole, one end of the flap 52 is hinged to one end of the fixed plate 51, the two layers of water stop canvas are located between the fixed plate 51 and the annular flange plate close to the portal, and the fixed plate 51, the two layers of water stop canvas and the annular flange plate are fixed by bolts. The sealing structure of double water stop canvas + folding flap is adopted to form a multi-layer sealing barrier, which significantly improves the sealing property between the shield machine and the portal, and prevents the portal from gushing.
[0024] In the embodiment, the grouting pipe with a grouting valve is detachably installed at each emergency grouting hole 2, which can be recycled.
[0025] The above is only a preferred embodiment of the utility model, and does not limit the technical scope of the utility model, so any slight modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment still belongs to the scope of the technical solution of the utility model.
Claims
1. A water-rich layer shield launching construction blowout prevention device, characterized in that, The extension ring is composed of a plurality of arc single body plates, the outer side of the extension ring is provided with a plurality of emergency grouting holes, the outer side of the extension ring is provided with a plurality of observation windows, the outer side of both ends of each arc single body plate is welded with an arc flange plate, a plurality of arc flange plates on the same side are butted to form a ring flange plate, and a sealing structure is fixedly connected to the ring flange plate at one end close to the door hole through bolts.
2. The water-rich layer shield launching construction blowout prevention device according to claim 1, characterized in that, The number of the emergency grouting holes is four, and the four emergency grouting holes are uniformly distributed along the circumference of the extension ring, and the number of the observation windows is two.
3. The water-rich layer shield launching construction blowout prevention device according to claim 1, characterized in that, The two sides of each arc single body plate are fixedly connected with flange plates, and the adjacent two flange plates of the two arc single body plates are fixedly connected through bolts.
4. The water-rich layer shield launching construction blowout prevention device according to claim 1, characterized in that, The outer side of the arc single body plate is uniformly provided with a plurality of rib plates.
5. The water-rich layer shield launching construction blowout prevention device according to claim 1, characterized in that, The sealing structure comprises two layers of water stop canvas and a folding flap, the folding flap comprises a flap and a fixed plate with a bolt hole, one end of the flap is hinged to one end of the fixed plate, the two layers of water stop canvas are located between the fixed plate and the ring flange plate close to the door hole, and the fixed plate, the two layers of water stop canvas and the ring flange plate are fixed through bolts.
6. The water-rich layer shield launching construction blowout prevention device according to claim 1, characterized in that, A grouting pipe with a grouting valve is detachably installed at each emergency grouting hole.