CN220353874U - Outer waterproof elastic sealing construction device in shield tunneling machine segment assembling operation - Google Patents

Abstract

The utility model discloses an outer waterproof elastic sealing construction device in shield tunneling machine segment assembly operation, which comprises a segment conveying mechanism, a segment assembly machine and a post-wall grouting system; the duct piece conveying mechanism is used for conveying duct pieces; the wall rear grouting system is connected with a slurry stirring vehicle, the slurry stirring vehicle is provided with a screening device, and the screening device screens the dregs conveyed by the belt conveyor and conveys the available part into the slurry stirring vehicle for stirring; the duct piece splicing machine is used for sticking the duct piece on the inner side surface of the hole wall, and filling gaps between the inner side surface of the hole wall and the duct piece with slurry, so that sealing and waterproofing on the upstream surface outside the duct piece are realized. In the tunneling process, the waterproof system for sealing the upstream surface of the pipe piece is rapidly molded, and meanwhile, the waterproof layer and the upstream surface seal have the characteristics of high strength, high elasticity and water expansion sealing, so that the problem that the subway pipe piece needs to be maintained for a long time in a micro deformation state is solved, and the problems of outward transport garbage treatment cost, maintenance cost and water leakage are saved.

Description

Outer waterproof elastic sealing construction device in shield tunneling machine segment assembling operation

Technical Field

The utility model relates to an external waterproof elastic sealing construction device in shield tunneling machine segment assembly operation.

Background

The shield tunneling machine is a special engineering machine for tunneling, is widely used for subway, railway, highway, municipal and hydroelectric tunnel engineering, and has the functions of excavating and cutting soil body, conveying soil residue, splicing tunnel lining and the like.

The shield machine mainly comprises a front shield body, a connecting bridge and a rear matched trolley. The front shield body consists of a cutting system, a propulsion system, a dregs conveying system, a duct piece assembling system, a post-wall grouting system and the like. The shield machine can synchronously realize the outward transportation and the lining assembly of the tunnel in the tunneling process of the tunnel, and mainly depends on a slag conveying system, a segment assembly system and a post-wall grouting system.

In the prior art, grouting materials of the post-wall grouting system are prepared by stirring by a ground slurry station, the grouting materials are basically concrete mortar mixed with bentonite, medium coarse sand and other materials, and the prepared grouting materials are conveyed to the post-wall grouting system through a grouting system and matched with a duct piece assembling system to complete gap filling of tunnel lining.

And the post-wall grouting system injects concrete mortar into a gap between the outer wall of the segment and the inner wall of the tunnel after the segment is spliced. The hard concrete protection layer is formed after the concrete mortar is coagulated, and is in micro-vibration and deformation environments for a long time in the tunnel construction and later use processes, so that deformation cracks, damages and other conditions are easy to occur, and the protection problems of tunnel wall water permeation, water seepage and the like are difficult to avoid.

To above-mentioned problem, this application provides an outer waterproof elastic seal construction equipment in shield constructs quick-witted section of jurisdiction assembly operation.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides an outer waterproof elastic sealing construction device in the segment assembly operation of a shield machine, wherein a rigid protective layer is a high-strength elastically deformable protective layer, and the problems of water permeation and water seepage of tunnel pipe walls caused by damage of the protective layer due to vibration and deformation are solved.

In order to solve the technical problems, the utility model provides the following technical scheme: an outer waterproof elastic sealing construction device in shield machine segment assembly operation is applied to the shield machine, includes: the dregs conveying system is used for conveying dregs excavated by the shield machine to a dregs outlet; the duct piece assembling system is used for conveying and assembling duct pieces; the pulping system is used for preparing waterproof sealing slurry and is connected with a slurry station; and the post-wall grouting system is used for injecting the waterproof sealing slurry prepared by the pulping system into the outer wall of the spliced duct piece and performing waterproof sealing on the outer water facing surface. The waterproof sealing slurry is a flexible sealing waterproof material.

The muck conveying system comprises a screw conveyor, a belt conveyor and a soil bucket trolley, wherein the screw conveyor is used for conveying muck at the bottom of a tunnel to the top of the tunnel, the belt conveyor is used for conveying muck at the top of the tunnel to the soil bucket trolley, the soil bucket trolley is used for temporarily storing muck, and the soil bucket trolley is provided with a slag hole.

The duct piece assembling system comprises a duct piece conveying mechanism, a duct piece trolley and a duct piece assembling machine, wherein the duct piece conveying mechanism is used for conveying duct pieces, the duct piece trolley is used for temporarily placing the duct pieces, and the duct piece assembling machine is used for assembling the duct pieces.

The pulping system comprises a ground pulp station, a pulp conveying pipe and a pulping trolley, wherein the ground pulp station is used for storing flexible sealing waterproof materials, the pulp conveying pipe is used for conveying the flexible sealing waterproof materials of the ground pulp station to the pulping trolley, the pulping trolley is provided with a screening device, the screening device is used for screening the slag soil conveyed by the belt conveyor in a split mode, and stirring the screened available slag soil and the flexible sealing waterproof materials to prepare the waterproof sealing slurry, and the unavailable slag soil is split into the soil bucket trolley.

The pulping system is connected with the post-wall grouting system, and the prepared waterproof sealing slurry can be conveyed to the post-wall grouting system.

And after the slurry for waterproof sealing is solidified, the slurry is a high-strength elastic sealing waterproof layer.

The duct piece conveying mechanism comprises a lifting device and a duct piece plate trailer, the duct piece plate trailer conveys duct pieces of a ground duct piece stacking field to the duct piece trolley, and the lifting device places the duct pieces of the duct piece trolley on the duct piece splicing machine.

The belt conveyor is provided with a diversion mechanism, and the diversion mechanism conveys part of dregs to the screening device.

The utility model provides an external waterproof elastic sealing construction device in shield machine segment assembly operation, which is characterized in that a slurry conveying pipe is used for conveying a flexible sealing waterproof material, the flexible sealing waterproof material is mixed with in-situ soil excavated by a shield machine to form waterproof sealing slurry containing the flexible sealing waterproof material and screened in-situ soil, the waterproof sealing slurry is injected into a gap between the outer wall of a segment and the inner wall of a tunnel through a post-wall grouting system, an elastic sealing protective layer different from a hard concrete protective layer is formed after the waterproof sealing slurry is solidified, the elastic sealing protective layer has good deformation rebound capability, deformation cracks, damage and the like are avoided in a long-term vibration environment, and therefore the protection problems of water permeation, water seepage and the like of the tunnel pipe wall caused by the deformation cracks, the damage and the like of the hard concrete protective layer are thoroughly solved. And because the in-situ soil is directly utilized, the outward transportation workload of the in-situ soil is reduced, and the construction efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following discussion will discuss the embodiments or the drawings required in the description of the prior art, and it is obvious that the technical solutions described in connection with the drawings are only some embodiments of the present utility model, and that other embodiments and drawings thereof can be obtained according to the embodiments shown in the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a shield machine to which the present utility model is applied.

Fig. 2 is a schematic view of the interior of the front shield body.

Fig. 3 is a schematic view of a front section of a belt conveyor.

Fig. 4 is a schematic view of the rear section of the belt conveyor.

Fig. 5 is a flow chart of the operation of the present utility model.

Fig. 6 is a schematic view of a segment plate vehicle and its peripheral segment conveying mechanism according to the present utility model.

Fig. 7 is a schematic view of a construction site of the present utility model.

In the figure: the device comprises a front shield body 1, a cutter head 11, a front shield 12, a middle shield 13, a tail shield 14, a propulsion cylinder 15, a person cabin 16, a connecting bridge 2, a rear supporting trolley 3, a duct piece assembling machine 4, a lifting device 41, a screw conveyor 5, a slurry stirring vehicle 6, a slurry conveying vehicle 61, a belt conveyor 7, a duct piece plate vehicle 8, a soil bucket vehicle 9, a gantry crane 91, a muck pond 92, a muck conveying vehicle 93 and a loading mechanism 94.

Detailed Description

The following description of the embodiments of the present utility model will be made in detail and with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present utility model. All other embodiments, which can be made by a person of ordinary skill in the art without the need for inventive faculty, are within the scope of the utility model, based on the embodiments described in the present utility model.

The shield tunneling machine applied by the device comprises a front shield body 1, a connecting bridge 2 and a rear matched trolley 3. The front shield body 1 consists of a cutting system, a propulsion system, a dregs conveying system, a duct piece assembling system, a wall rear grouting system and the like. The connecting bridge 2 is a connecting bridge of the front shield body 1 and the rear supporting trolley 3, and power of each system is supplied to an executing element in the front shield body 1 from the rear supporting trolley 3 through a pipeline on the bridge. The rear supporting trolley 3 is mainly used for configuring power sources and auxiliary construction systems and manual operation systems for water, electricity, gas, slurry, measurement, monitoring and the like for all systems in the front shield body 1.

The front shield body 1 comprises a front shield 12, a middle shield 13 and a tail shield 14, a cutter head 11 is arranged on the front side of the front shield 12, a propulsion oil cylinder 15 and a person cabin 16 are arranged in the middle shield 13, and a duct piece splicing machine 4 is arranged in the tail shield 14. And is provided with a personnel store 16 where workers can maneuver the shield machine.

The structure of the connecting bridge 2 of the shield machine comprises a 1# bridge and a 2# bridge, and is mainly used for connecting a pipe line between the shield body and the rear supporting trolley 3. Wherein: the main structure of the No. 1 bridge frame is a top muck transporting device (a belt conveyor 7) and a lower segment secondary lifting device 41 (a double-rail beam); the main structure of the No. 2 bridge frame is a top muck transporting device (a belt conveyor 7), a lower segment primary lifting device 41 (a monorail beam) and a lateral shield consumable pumping device (shield tail grease, EP2 and HBW).

The rear supporting trolley 3 of the shield machine comprises 5 or more trolleys, and each trolley is respectively provided with a related device to provide a power source for the front shield body 1. The following mechanisms are arranged on the multi-section vehicle: the device comprises a grouting system, a manual operation system, a foam system, a cutter head 11, a power pump device such as a screw machine and a gate, a power main oil tank and a pipe piece assembling machine 4 pump device, a transformer and electric cabinet device, a bentonite system, a slag hole device, an inner circulating water system, an outer circulating water system and the like. In addition, the shield machine is also provided with other working vehicles, including a slurry stirring vehicle 6, a segment plate vehicle 8, a soil bucket transport vehicle and the like.

In the prior art, the concrete mortar is mixed and stirred at an external stirring station, and the concrete mortar is conveyed to a gap between the outer wall of the duct piece and the inner wall of the tunnel after the duct piece is assembled through a slurry conveying channel. The concrete mortar forms a hard concrete protective layer after being coagulated, and the hard protective layer is in a long-term vibration state in tunnel construction and later use, and is easy to deform, crack, damage and the like, so that the protection problems of water permeability, water seepage and the like are caused.

The technical scheme of the device is that the flexible sealing waterproof material is conveyed through a channel and stirred and mixed with in-situ soil drilled by a shield machine, namely, the screened muck, so as to form mixed slurry containing the flexible sealing waterproof material and the screened in-situ soil. The mixed slurry is used for replacing the gap between the outer wall of the injected duct piece and the inner wall of the tunnel by the existing device for injecting concrete mortar, and after being solidified, the mixed slurry forms an elastic sealing protective layer which is different from a hard concrete protective layer, has good deformation rebound capability, and can not generate deformation cracks, damages and other conditions in a long-term vibration deformation state, so that the protection problems of water permeation, water seepage and the like of the tunnel pipe wall caused by the deformation cracks, the damages and the like of the hard concrete protective layer are thoroughly solved. The device directly utilizes the in-situ soil, reduces the outward transportation workload of the in-situ soil, and further improves the construction efficiency.

The structure of the scheme is described in detail below with reference to fig. 1 to 7: the embodiment discloses an outer waterproof elastic sealing construction device in shield machine segment assembly operation, which is applied to a shield machine and comprises a segment conveying mechanism, a segment assembly machine 4 and a post-wall grouting system; the duct piece conveying mechanism is used for conveying duct pieces; the post-wall grouting system is connected with a slurry stirring vehicle, the slurry stirring vehicle is provided with a screening device, and the screening device screens the dregs conveyed by the belt conveyor 7 and conveys the available part into the slurry stirring vehicle for stirring; the duct piece splicing machine 4 is used for sticking the duct piece on the inner side surface of the hole wall, and filling gaps between the duct piece and the hole wall with slurry, so that sealing and waterproofing of the outer water facing surface of the duct piece spliced body are realized.

The utility model provides a water-facing surface sealing waterproof system for pipe piece assembly of a shield machine, which can improve the working efficiency of the shield machine, can rapidly mold the water-facing surface sealing waterproof system outside the pipe piece in the tunneling process, has the characteristics of high strength, high elasticity and water swelling sealing, solves the problem that the subway pipe piece needs to be maintained for a long time in a micro deformation state, and greatly saves the treatment cost of subway construction outward transportation garbage, the long-term maintenance cost and the problem that water leakage affects the safe operation.

The duct piece splicing machine is used for sticking the duct pieces on the hole walls and sealing the outer water facing surfaces of the duct pieces by utilizing the composite waterproof slurry, so that sealing and waterproofing are realized, the outward transportation of solid waste in the construction tunneling process is reduced, the investment cost is reduced, and the water leakage maintenance cost in the operation process is solved due to the waterproof sealing on the outer water facing surfaces of the duct pieces.

The slurry stirring vehicle obtains slurry from an external slurry station through a slurry conveying pipe, is provided with a stirring device and a screening device which are connected, and stirs and mixes the screened residue soil and the slurry to prepare slurry; the slurry stirring vehicle is connected with the post-wall grouting system, and the post-wall grouting system provides slurry for the duct piece splicing machine. The slurry is the flexible sealing waterproof material.

The duct piece conveying mechanism comprises a duct piece plate car 8 and a lifting device 41, the duct piece plate car 8 conveys the duct piece of the storage area to the vicinity of the duct piece assembling machine 4, and the lifting device 41 places the conveyed duct piece on the duct piece assembling machine 4.

One side of the belt conveyor 7 is connected with a screw conveyor 5, and the screw conveyor 5 conveys dregs scraped by a cutter head 11 of the shield machine to the belt conveyor 7.

The belt conveyor 7 is provided with a diverting mechanism which conveys part of the dregs to the screening device.

The other side of the belt conveyor 7 is connected with a soil bucket truck 9, the soil bucket truck 9 conveys the muck to a soil outlet, the soil outlet is provided with a muck transport truck 93, and the muck transport truck transports the muck. A gantry crane 91 is erected at the soil outlet, the hopper car 9 is lifted by the gantry crane 91, and the muck is poured into a muck pool 92. At the muck pond 92, several loading mechanisms 94 are provided, which load muck into the hoppers of the muck trucks 93. The loading mechanism 94 may be a transport machine or an excavator.

The shield tunneling machine comprises a front shield body 1, a connecting bridge 2 and a rear matched trolley 3, wherein the belt conveyor 7 starts from the connecting bridge 2, and the tail end of the belt conveyor is positioned above the rear matched trolley 3; the screw conveyor 5 is positioned below the connecting bridge 2, and the end part of the screw conveyor extends into the front shield body 1; the front shield body 1 is provided with a cutter head 11 at the front, and the duct piece splicing machine 4 is arranged in the front shield body 1.

The shield machine comprises a dregs conveying system, a slurry conveying system and a segment assembling system. When the shield tunneling machine tunnels forwards, the excavated muck is transported to the outside by using a muck transporting system for treatment. When tunneling, the pipe piece is attached to the wall of the hole.

The utility model is mainly used for filling gaps between the upstream surface of the outer side of the pipe piece and the wall of the tunnel, realizing waterproof sealing of the pipe piece, and solving the problem that underground water enters the gaps between the pipe pieces and concrete gaps generated in the use of the pipe pieces by penetrating the wall of the tunnel and leaks into the tunnel.

The flexible sealing waterproof material can be selected from the existing waterproof sealing materials meeting the requirements. The materials meeting the requirements are on many markets, and belong to the prior art products. The grouting material is characterized in that the grouting material is in a liquid state in construction, the grouting material mixed with the flexible sealing waterproof material can be poured into the gaps by using a wall back grouting system, and the grouting material expands into a solid elastic sealing body after meeting water, so that the grouting material has a good sealing effect on various gaps.

Conventional grouting materials such as cement, polyurethane and the like often generate stress damage conditions and secondary water leakage.

The flexible sealing waterproof material adopted by the device adopts a novel water-based nano waterproof plugging material which can be purchased in the market, and the engineering problem similar to stress damage can be solved due to the softness and water swelling property of the material; secondly, the precursor materials similar to materials such as cement, polyurethane and the like have great viscosity, so that the materials can only cover the surface parts of the structures at water leakage points for protection, but hardly enter small gaps inside the concrete for omnibearing protection, and further, the more effective long-term waterproof requirement is hardly achieved. Before the water-based nano waterproof plugging material is solidified, the precursor is in a complete liquid state, has almost the same viscosity as water, has good deep penetration capacity of tiny cracks, and can be applied to underground construction engineering as a waterproof layer and also can be used as a plugging material in the aspect of structural leakage repair.

The flexible sealing waterproof material can be environment-friendly high-molecular polymer series products, such as GY-1 high-molecular polymer modified waterproof slurry produced by the applicant, high-permeability modified epoxy composite waterproof material and the like.

The shield tunneling construction flow using the device comprises the following steps: s1, preparing work; s2, shield pushing; s3, unearthing; s4, segment assembly. Wherein S2, S3 and S4 are performed synchronously.

In the step S2, the pushing cylinder 15 drives the cutterhead 11 to push forwards; while the direction of advance needs to be measured continuously, controlling the axis.

In step S3, the muck scraped by the cutterhead 11 is transported by the screw conveyor 5 to the belt conveyor 7 and then transported to the hopper car 9. The hopper car 9 transports the muck to the muck outlet, and the muck is lifted by the gantry crane 91 after being accommodated and poured onto the muck transport car 93. And finally, transporting the transport vehicle to a specified place for processing. The belt conveyor 7 can transport part of the muck on the screening device while transporting, screen the muck, leave available and transport the useless muck out.

In the step S4, the segment plate trailer 8 transports the segments of the segment storage area to a designated area, and then the segments are lifted onto the segment erector 4 by the segment lifting device 41; meanwhile, the slurry mixer truck draws the slurry of the slurry station, mixes and mixes the slurry with the sunned dregs, and then conveys the slurry to the duct piece assembling machine 4 through the post-wall grouting system, and particularly performs the patch assembling work of the duct piece.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the utility model is indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The utility model provides an external waterproof elastic sealing construction device in shield tunneling machine segment assembly operation, which can improve the working efficiency of a shield tunneling machine, reduce investment, reduce the outward transportation work of solid wastes in the tunneling process, and greatly reduce the water leakage maintenance cost in the subway operation process.

Claims (7)

1. The utility model provides an outer waterproof elastic seal construction equipment in shield constructs quick-witted section of jurisdiction assembly operation, is applied to the shield and constructs on the machine, its characterized in that: comprises a duct piece conveying mechanism, a duct piece assembling machine and a post-wall grouting system; the duct piece conveying mechanism is used for conveying duct pieces; the back wall grouting system is connected with a slurry stirring vehicle, the slurry stirring vehicle is provided with a screening device, and the screening device screens the dregs conveyed by the belt conveyor and conveys the usable part into the slurry stirring vehicle for stirring; the duct piece splicing machine is used for sticking the duct piece on the inner side surface of the hole wall, and the gap between the duct piece and the hole wall is filled with flexible sealing waterproof material slurry conveyed by the slurry stirring vehicle, so that sealing and waterproofing of the upstream surface outside the duct piece splicing are realized.

2. The construction device according to claim 1, wherein: the slurry stirring vehicle obtains flexible sealing waterproof material slurry from an external ground slurry station through a slurry conveying pipe, is provided with a stirring device and a screening device to be connected, and stirs and mixes the screened residue soil and slurry; the slurry stirring vehicle is connected with the post-wall grouting system, and the post-wall grouting system provides slurry for the duct piece splicing machine.

3. The construction device according to claim 2, wherein: the duct piece conveying mechanism comprises a duct piece plate vehicle and a lifting device, the duct piece plate vehicle conveys the duct piece of the storage area to the vicinity of the duct piece assembling machine, and the lifting device places the conveyed duct piece on the duct piece assembling machine.

4. A construction device according to claim 3, wherein: one side of the belt conveyor is connected with a screw conveyor, and the screw conveyor conveys dregs scraped by a cutter head of the shield machine to the belt conveyor.

5. The construction apparatus according to claim 4, wherein: the belt conveyor is provided with a diversion mechanism, and the diversion mechanism conveys part of dregs to the screening device.

6. The construction apparatus according to claim 4, wherein: the other side of the belt conveyor is connected with a soil bucket truck, the soil bucket truck conveys the muck to a soil outlet, the muck transport truck is arranged at the soil outlet, and the muck transport truck transports and processes the muck.

7. The construction apparatus according to claim 4, wherein: the shield machine comprises a front shield body, a connecting bridge and a rear matched trolley, wherein the belt conveyor starts from the connecting bridge, and the tail end of the belt conveyor is positioned above the rear matched trolley; the screw conveyor is positioned below the connecting bridge, and the end part of the screw conveyor extends into the front shield body; the front shield body front portion is provided with the blade disc, the section of jurisdiction pin-connected panel machine set up in the front shield body.