Shield tunnel backfill grouting equipment system

Abstract

The utility model relates to the technical field of shield construction, in particular to a shield tunnel wall back grouting equipment system which comprises a grouting device, a mortar feeding device, a mortar supply device, a flat car and a base, the base is arranged above the flat car and fixedly connected with the flat car through positioning angle steel, and the grouting device and the mortar feeding device are both installed on the base. The mortar feeding device is connected with the mortar feeding device through a feeding pipe, a discharging port of the mortar feeding device corresponds to a feeding port of the grouting device, the mortar feeding device comprises a feeding screw conveyor and a feeding screw support, the feeding screw conveyor is fixed to the feeding screw support, and an additive batching machine is arranged at a feeding port of the feeding screw conveyor. The device is simple in structure, easy and convenient to use and operate and high in construction efficiency, additives and mortar are mixed through the additive dosing machine and then pumped through the mortar conveying pump to fill stratum gaps with insufficient synchronous grouting, and the shield tunnel wall back grouting quality is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to shield construction technical field, especially a kind of shield tunnel wall back grouting equipment system. BACKGROUND

[0002] While shield tunneling construction, synchronous grouting system is injected into the gap between the space of cutterhead excavation and the outer periphery of segment, and the gap is filled with mortar.

[0003] In the stratum with abundant groundwater, the flow of groundwater can take away part of the slurry, and the groundwater can also dilute the slurry, change the proportion of the slurry and the initial setting time, and affect the quality of grouting.

[0004] The conventional treatment method is to perform multiple grouting to improve the filling effect on the stratum gap, but due to the influence of the quality of the slurry, the initial setting time, the grouting method, the technical level of the grouting personnel and other factors, the problem of defective grouting quality still exists.

[0005] Based on the above background, the utility model provides a kind of shield tunnel wall back grouting equipment system which can effectively change the grouting effect of shield tunnel wall. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a kind of shield tunnel wall back grouting equipment system, which aims to solve the problems in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides a kind of shield tunnel wall back grouting equipment system, which comprises a grouting device, a mortar feeding device, a mortar supply device, a flat car and a base, the base is arranged above the flat car, the four corners of the flat car are provided with positioning angle steels, the grouting device and the mortar feeding device are arranged on the base, the mortar supply device is connected with the mortar feeding device through a feeding pipe, and the discharge port of the mortar feeding device corresponds to the feeding port of the grouting device.

[0008] Preferably, the grouting device comprises a mortar delivery pump, a grouting hose and a grouting valve assembly, one end of the grouting hose is connected with the discharge port of the mortar delivery pump, and the other end is connected with the grouting valve assembly.

[0009] Preferably, the mortar feeding device comprises a feeding screw and a feeding screw support, the feeding screw is fixed on the feeding screw support through first bolts and first clamps, and the length of the first clamp is not less than 300mm.

[0010] An additive batching machine is arranged at the feeding port of the feeding screw.

[0011] Preferably, the mortar feeding device comprises a mortar tank truck and a mortar pump, and the mortar tank truck is connected with the mortar pump through a feeding pipe assembly.

[0012] Preferably, one end of a feeding port of the feeding pipe is connected with the mortar tank truck, one end of a discharging port of the feeding pipe is provided with a feeding pipe support, the feeding pipe is fixedly connected with the feeding pipe support through a second bolt and a second clamp, and the feeding pipe support is fixedly connected with the base.

[0013] Preferably, the feeding screw support is provided in the form of a profile steel support structure, and the feeding screw support comprises a base support, a first supporting leg and a second supporting leg, the first supporting leg and the second supporting leg are respectively arranged on two sides of the base support, and the base support is fixedly connected with the base.

[0014] Preferably, the additive batching machine comprises a support and a weighing screw machine, the weighing screw machine is arranged above the support, a storage hopper is arranged above the weighing screw machine, and a driving device is arranged at one end of the weighing screw machine.

[0015] The discharging port of the weighing screw machine is connected with the feeding port of the feeding screw machine.

[0016] Preferably, the feeding screw machine is provided in the form of a cylindrical structure.

[0017] Therefore, the shield tunnel wall post-grouting equipment system has the following beneficial effects

[0018] Beneficial effects:

[0019] The mortar tank truck, the feeding screw machine, the additive batching machine, the mortar delivery pump, the grouting hose and the grouting valve assembly are combined to form the grouting equipment system, the cement mortar with a short initial setting time is mixed with additives, then is mixed and stirred by the feeding screw machine and is delivered into a feeding hopper of the mortar delivery pump, the mortar is pumped by the mortar delivery pump, passes through the grouting hose and the grouting valve assembly and reaches the top gap outside the tunnel segment periphery, can efficiently fill the stratum gap formed due to insufficient synchronous grouting or grout solidification shrinkage, solves the problem that the secondary double-liquid grouting in the water-rich stratum is easily washed away by underground water, and the shield tunnel wall post-grouting quality is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic view of a shield tunnel wall post-grouting equipment system according to the present application;

[0021] Figure 2 FIG. 5 is a structural schematic view of a feeding pipe support;

[0022] Figure 3 Fig. 2 is a structural schematic diagram of the upper feeding screw support;

[0023] Figure 4 Fig. 3 is a partial enlarged view of A in Fig. 2; Figure 1

[0024] Figure 5 Fig. 4 is a view of B in Fig. 3; Figure 4

[0025] Figure 6 Fig. 6 is a structural schematic diagram of the additive batching machine.

[0026] Reference signs

[0027] 1, grouting device; 11, mortar delivery pump; 12, grouting hose; 13, grouting valve assembly; 2, mortar feeding device; 21, upper feeding screw; 22, upper feeding screw support; 221, bottom support; 222, first leg; 223, second leg; 23, first bolt; 24, first clamp; 3, mortar supply device; 31, mortar tank truck; 32, mortar pump; 33, feeding pipe assembly; 4, flat car; 41, track; 5, base; 6, positioning angle steel; 7, feeding pipe; 8, additive batching machine; 81, support; 82, weighing screw; 83, storage hopper; 84, driving device; 9, feeding pipe support; 91, second bolt; 92, second clamp; 10, tunnel segment. DETAILED DESCRIPTION

[0028] The technical scheme of the present application is further described below by means of the accompanying drawings and examples.

[0029] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the usual meaning understood by a person with ordinary skill in the art to which the present application belongs. The terms "first", "second" and similar words used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The terms "connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0030] EMBODIMENT

[0031] As Figures 1-6 ​​The utility model discloses a kind of shield tunnel wall back grouting equipment systems, including grouting device 1, mortar feeding device 2, mortar supply device 3, flat car 4 and base 5, base 5 is installed above flat car 4, positioning angle steel 6 is welded in the position of four corners of flat car 4, positioning angle steel 6 wants to be higher than flat car 4 table 100mm, the size of positioning angle steel 6 is 100mm × 100mm × 6mm, positioning angle steel 6 is used to fixedly install base 5 on flat car 4, its grouting device 1 and mortar feeding device 2 are fixedly installed on base 5, mortar supply device 3 is connected with mortar feeding device 2 by feeding pipe 7, the discharge port of mortar feeding device 2 corresponds the feed inlet of grouting device 1, for sending the mortar of mortar feeding device 2 into grouting device 1.

[0032] Grouting device 1 includes mortar delivery pump 11, grouting hose 12 and grouting valve assembly 13, one end of grouting hose 12 is connected with the discharge port of mortar delivery pump 11, the other end is connected with grouting valve assembly 13, the mixed additive mortar is pumped to the back gap of tunnel segment 10 through grouting hose 12 and grouting valve assembly 13 by mortar delivery pump 11, to fill the stratum gap formed by synchronous grouting deficiency or slurry solidification shrinkage as soon as possible.

[0033] Mortar feeding device 2 includes feeding screw 21 and feeding screw support 22, and the feeding screw 21 is fixed on the feeding screw support 22 by the first bolt 23 and the first clamp 24.

[0034] The feeding screw 21 is provided in a cylindrical structure, and an additive batching machine 8 is arranged at the feed inlet of the feeding screw 21. The additive batching machine 8 includes a support 81 and a weighing screw 82, and the weighing screw 82 is arranged above the support 81. A storage hopper 83 is arranged above the weighing screw 82, and a driving device 84 is arranged at one end of the weighing screw 82. The discharge port of the weighing screw 82 is connected with the feed inlet of the feeding screw 21. The weighing screw 82 is used to feed a certain proportion of additives into the feed inlet of the feeding screw 21 and preliminarily mix with the mortar pumped by the mortar supply device 3.

[0035] The feeding screw support 22 is provided in a profile steel support structure, and the feeding screw support 22 includes a bottom support 221, a first leg 222 and a second leg 223. The first leg 222 and the second leg 223 are arranged on both sides of the bottom support 221, and the bottom support 221 is fixedly connected with the base 5.

[0036] The mortar supply device 3 includes a mortar tank car 31 and a mortar pump 32, and the mortar tank car 31 is connected with the mortar pump 32 through a feeding pipe assembly 33.

[0037] The feeding port of the feeding pipe 7 is connected with the mortar tank truck 31, and the discharging port of the feeding pipe 7 is provided with a feeding pipe support 9, the feeding pipe 7 is fixedly connected with the feeding pipe support 9 through the second bolt 91 and the second clamp 92, and the feeding pipe support 9 is fixedly installed on the base 5.

[0038] In use, the mortar conveying pump 11, the feeding screw 21, the additive batching machine 8, the mortar tank truck 31 and the matched mortar pump 32 are powered by the 400V power source in the tunnel, the grouting equipment system is dragged by the electric locomotive (not shown in the figure) to move the flat car 4 and the mortar tank truck 31 on the track 41, and the grouting equipment is reliably fixed after the grouting equipment reaches the pre-grouting position in the tunnel and stops.

[0039] A specific use method of the shield tunnel wall back grouting equipment system, comprising the following steps:

[0040] S1, the mortar conveying pump 11, the feeding screw 21 and the additive batching machine 8 are fixedly installed on the base 5, and the positioning angle steel 6 is welded at the four corners of the flat car 4, and then the base 5 is hoisted to the flat car 4.

[0041] S2, the mortar supply adopts the mortar tank truck 31 and the matched mortar pump 32, one end of the feeding pipe 7 is connected with the discharging port of the mortar pump 32, the other end is connected with the feeding port of the feeding screw 21, and the feeding pipe 7 is fixedly installed on the base 5 through the feeding pipe support 9.

[0042] S3, after the equipment is installed, the equipment system is debugged to ensure normal operation of the equipment.

[0043] S4, the flat car 4 and the mortar tank truck 31 are dragged by the electric locomotive to the pre-grouting position in the tunnel and are reliably fixed, one end of the grouting hose 12 is connected with the discharging port of the mortar conveying pump 11, and the other end is connected with the grouting valve assembly 13 and is fixedly installed on the tunnel segment 10.

[0044] S5, the mortar pump 32 of the mortar tank truck 31 is started to convey mortar to the feeding screw 21, and the additive batching machine 8 is started at the same time, the additive is conveyed to the hopper of the feeding screw 21, the mortar and the additive are preliminarily mixed, and then the mixture is conveyed to the hopper of the mortar conveying pump 11 by the feeding screw 21, and the mortar and the additive are fully mixed in the feeding screw 21.

[0045] S6, the mortar conveying pump 11 conveys the mixed mortar to the back of the tunnel segment 10, and stops grouting after the grouting pressure reaches the design requirement, and then the grouting hose 12 is disassembled, and the grouting hose 12 is moved to the next grouting point for continuous grouting.

[0046] Therefore, the utility model discloses a kind of shield tunnel wall post grouting equipment systems above, by adding cement mortar + additive mortar with shorter initial setting time to fill synchronous grouting insufficient stratum gap, properly solve the building gap after synchronous grouting solidification in shield tunneling process, reduce the stratum subsidence etc.

[0047] Finally, it should be noted that: the above examples are only the preferred specific embodiments of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme of the utility model and the utility model concept, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A grouting equipment system behind the wall of a shield tunnel, characterized in that: The device includes a grouting device, a mortar feeding device, a mortar supply device, a flatbed truck, and a base. The base is located above the flatbed truck, and positioning angle steel is provided at each of the four corners of the flatbed truck. The grouting device and the mortar feeding device are both located on the base. The mortar supply device is connected to the mortar feeding device through a feeding pipe, and the outlet of the mortar feeding device corresponds to the inlet of the grouting device.

2. The shield tunnel wall backfilling grouting equipment system according to claim 1, characterized in that: The grouting device includes a mortar conveying pump, a grouting hose, and a grouting valve assembly. One end of the grouting hose is connected to the outlet of the mortar conveying pump, and the other end is connected to the grouting valve assembly.

3. The shield tunnel wall backfilling grouting equipment system according to claim 1, characterized in that: The mortar feeding device includes a feeding screw conveyor and a feeding screw support. The feeding screw conveyor is fixed to the feeding screw support by a first bolt and a first clamp. The length of the first clamp is not less than 300mm. An additive batching machine is installed at the feed inlet of the screw conveyor.

4. The shield tunnel wall backfilling grouting equipment system according to claim 1, characterized in that: The mortar supply device includes a mortar tanker truck and a mortar pump, and the mortar tanker truck and the mortar pump are connected through a feed pipe assembly.

5. The shield tunnel wall backfilling grouting equipment system according to claim 1, characterized in that: One end of the feed pipe is connected to the mortar supply device, and one end of the feed pipe is provided with a feed pipe support. The feed pipe is fixedly connected to the feed pipe support by a second bolt and a second clamp. The feed pipe support is fixedly connected to the base.

6. The shield tunnel wall backfilling grouting equipment system according to claim 3, characterized in that: The feeding spiral support is configured as a steel support structure. The feeding spiral support includes a base support, a first leg and a second leg. The first leg and the second leg are respectively arranged on both sides of the base support. The base support is fixedly connected to the base.

7. A shield tunnel wall backfilling grouting equipment system according to claim 6, characterized in that: The additive batching machine includes a support and a weighing screw conveyor. The weighing screw conveyor is located above the support, and a storage hopper is located above the weighing screw conveyor. A drive device is located at one end of the weighing screw conveyor. The discharge port of the weighing screw conveyor is connected to the inlet of the feeding screw conveyor.

8. The shield tunnel wall backfilling grouting equipment system according to claim 7, characterized in that: The feeding screw conveyor is configured with a cylindrical structure.

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