Device for preventing water gushing and sand gushing at bottom of shield tail of shield tunneling machine
By designing sliding channels and fixed connection gate plate devices at the opening of the shield tail of the shield machine, combined with the grouting ball valve, the problem of water and sand gushing is solved, the construction safety and efficiency are improved, and the cost and complexity are reduced.
Patent Information
- Application Number
- CN202421024605.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-11
AI Technical Summary
During the opening process of the shield machine, water and sand gushing are difficult to effectively prevent, resulting in leakage plugging difficulties and safety hazards, affecting construction safety and efficiency.
Design a device including a gate body plate and a gate plate. The gate body plate is fixed at the opening of the shield tail to form a sliding channel, connected through a fixed part between the gate plate and the gate body plate, and cooperate with the grouting hole and the grouting ball valve. , the rib plate and fixed hole reinforced structure to achieve rapid closing and grouting operations.
It quickly prevents water and sand gushing, reduces construction difficulty and cost, improves construction safety and efficiency, and has a simple structure and easy installation.
Smart Images
Figure CN222276662U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of shield machine construction, and in particular relates to a device for preventing water and sand gushing from opening holes at the bottom of a shield tail of a shield machine. Background Art
[0002] At present, during the construction of opening holes at the bottom of the shield tail, water and soil pressure easily causes water and sand gushing at the opening site. At present, the existing hole opening method used in shield machines is mostly to fix the holes with a ball valve after the magnetic drill is completed. If water and sand gushing occurs during the magnetic drill drilling process, it is easy to cause difficulties in plugging leaks and the plugging effect is poor, and the ball valve cannot prevent water and sand gushing caused by large-area openings.
[0003] Dealing with the phenomenon of water and sand gushing from shield machines is a key issue in ensuring the safety of shield construction. If the water and sand gushing is not dealt with in a timely manner and the plugging time is long, it may lead to ground subsidence, the shield machine being buried, etc., causing huge losses. Utility Model Content
[0004] In order to solve the above problems, the technical solution adopted by the utility model is:
[0005] A device for preventing water and sand gushing from opening a hole at the bottom of a shield tail of a shield machine, comprising:
[0006] The gate body comprises two gate body plates arranged relatively parallel to each other, and the two gate body plates are fixedly mounted on the periphery of the opening of the shield tail to form a sliding channel;
[0007] a gate plate, the gate plate being slidably disposed in the sliding channel;
[0008] A fixing part is used to fix the relative position between the gate plate and the two gate body plates.
[0009] Furthermore, the length dimension of the gate body plate is at least the sum of the length dimensions of the two gate plates.
[0010] Furthermore, the area of the gate plate at least completely covers the opening of the shield tail.
[0011] Furthermore, the two gate body plates are angle steels or angle irons arranged opposite to each other.
[0012] Furthermore, it also includes a positioning block fixedly connected to the shield tail, the positioning block is located between the two gate body plates and is arranged outside the covering surface of the gate plate.
[0013] Furthermore, a grouting hole is arranged on the gate plate, and a grouting ball valve is installed in the grouting hole.
[0014] Furthermore, the fixing portion includes a plurality of fixing holes arranged at intervals along the length direction of the gate body plate, fixing nuts arranged corresponding to the fixing holes and fixedly connected to the gate body plate, and fixing bolts matched with the fixing nuts.
[0015] Furthermore, the gate body plate located in the opening portion of the shield tail is provided with a plurality of ribs at intervals along the length direction, and the ribs are used to strengthen the connection between the gate body plate and the shield tail.
[0016] Furthermore, the plurality of fixing holes and the plurality of ribs are alternately arranged in sequence.
[0017] Furthermore, a lifting lug is arranged on the gate plate.
[0018] Beneficial effects of the utility model:
[0019] (1) Easy installation, low difficulty, the anti-water and sand gushing device has a simple structure and no sophisticated structure.
[0020] (2) The processing is simple and the cost is low. There is no need to outsource the processing. The cost only includes the material and labor costs.
[0021] (3) It is easy to use and improves safety. During use, you only need to push and pull the gate plate, and keep a certain safe distance from the opening. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of a device for opening a hole at the bottom of the shield tail of a shield machine to prevent water and sand gushing;
[0023] Figure 2 A cross-sectional view of a device for opening a hole at the bottom of a shield tail of a shield machine to prevent water and sand gushing;
[0024] Figure 3 It is a schematic cross-sectional view of the installation position of a device for opening a hole at the bottom of a shield tail of a shield machine to prevent water and sand gushing;
[0025] Figure 4 A schematic cross-sectional view of the installation position of a device for opening a hole at the bottom of a shield tail of a shield machine to prevent water and sand gushing;
[0026] In the figure: 1. gate body plate; 2. gate plate; 3. grouting ball valve; 4. positioning block; 5. lifting ear; 6. rib plate; 7. fixing hole. DETAILED DESCRIPTION
[0027] The utility model provides a device for preventing water and sand gushing from opening a hole at the bottom of a shield tail of a shield machine. The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings to make it easier to understand and grasp.
[0028] Example 1 Fixing hole
[0029] refer to Figure 1-4 , a device for preventing water and sand gushing from opening a hole at the bottom of a shield tail of a shield machine, comprising:
[0030] The gate body comprises two gate body plates 1 arranged relatively parallel to each other, and the two gate body plates 1 are fixedly installed on the periphery of the opening of the shield tail to form a sliding channel;
[0031] A gate plate 2, the gate plate 2 is slidably arranged in the sliding channel;
[0032] The fixing part is used to fix the relative position between the gate plate 2 and the two gate body plates 1.
[0033] In this embodiment, the length dimension of the gate body plate 1 is at least the sum of the length dimensions of the two gate plates 2 .
[0034] In this embodiment, the area of the gate plate 2 at least completely covers the opening of the shield tail.
[0035] In this embodiment, the two gate body plates 1 are angle steels or angle irons arranged opposite to each other, preferably angle irons.
[0036] The device provided in this embodiment for preventing water and sand gushing from gushing out of the bottom hole of the shield tail of the shield machine also includes a positioning block 4 fixedly connected to the shield tail. The positioning block 4 is located between the two gate body plates 1 and is arranged outside the covering surface of the gate plate 2 to limit the sliding position of the gate plate 2.
[0037] In this embodiment, a grouting hole is provided on the gate plate 2, and a grouting ball valve 3 is installed in the grouting hole.
[0038] In this embodiment, the fixing portion includes three fixing holes 7 arranged at intervals along the length direction of the gate plate 1, fixing nuts arranged corresponding to the fixing holes 7 and fixedly connected to the gate plate 1, and fixing bolts matched with the fixing nuts.
[0039] In this embodiment, the gate body plate 1 located in the opening portion of the shield tail is provided with four ribs 6 at intervals along the length direction, and the ribs 6 are used to strengthen the connection between the gate body plate 1 and the shield tail.
[0040] Specifically, the three fixing holes 7 and the four ribs 6 are arranged alternately in sequence.
[0041] In order to facilitate lifting, the gate plate 2 is provided with a lifting lug 5 .
[0042] When water and sand gushing occurs, the gate plate 2 can be quickly pulled to close, and the gate plate 2 can be tightened with fixing bolts and fixing nuts depending on the gushing, and the grouting ball valve 3 can be used to perform grouting operations on the outside of the shield body according to the gushing of water and sand; when there is no water and sand gushing out of the grouting ball valve 3, the hole opening operation can continue.
[0043] The above fully describes the technical solution of the present invention. It should be noted that the specific implementation of the present invention is not limited to the above description. All technical solutions formed by ordinary technicians in the field using equivalent or equivalent transformations in structure, method or function based on the spirit of the present invention fall within the protection scope of the present invention.
Claims
1. A device for preventing water and sand gushing from opening a hole at the bottom of a shield tail of a shield machine, characterized in that: include: The gate body comprises two gate body plates arranged relatively parallel to each other, and the two gate body plates are fixedly mounted on the periphery of the opening of the shield tail to form a sliding channel; a gate plate, the gate plate being slidably disposed in the sliding channel; A fixing part is used to fix the relative position between the gate plate and the two gate body plates.
2. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 1, characterized in that: The length dimension of the gate body plate is at least the sum of the length dimensions of the two gate plates.
3. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 1, characterized in that: The area of the gate plate at least completely covers the opening of the shield tail.
4. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 1, characterized in that: The two gate body plates are angle steels or angle irons arranged opposite to each other.
5. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 1, characterized in that: It also includes a positioning block fixedly connected to the shield tail, the positioning block is located between the two gate body plates and is arranged outside the covering surface of the gate plate.
6. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 1, characterized in that: A grouting hole is arranged on the gate plate, and a grouting ball valve is installed in the grouting hole.
7. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 1, characterized in that: The fixing part comprises a plurality of fixing holes arranged at intervals on the gate body plate along the length direction, fixing nuts arranged corresponding to the fixing holes and fixedly connected to the gate body plate, and fixing bolts matched with the fixing nuts.
8. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 7, characterized in that: The gate body plate located in the opening portion of the shield tail is provided with a plurality of ribs at intervals along the length direction, and the ribs are used to strengthen the connection between the gate body plate and the shield tail.
9. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 8, characterized in that: The plurality of fixing holes and the plurality of ribs are arranged alternately in sequence.
10. The device for preventing water and sand gushing from opening a hole at the bottom of the shield tail of a shield machine according to claim 1, characterized in that: The gate plate is provided with a lifting lug.