CN218991589U - Concrete synchronous filling system behind shield and TBM construction tunnel segment wall - Google Patents

Abstract

The utility model provides a concrete synchronous filling system after shield construction and TBM construction of tunnel segment walls. The synchronous filling system comprises: the ground automatic stirring feeding system is arranged on the ground and is communicated with the stirring tank truck through a conveying pipeline; the stirring tank truck is placed on a tunnel transportation tank truck under the well; the concrete backfill pump is arranged on a tunnel transportation plate vehicle under the well and is communicated with one end of two concrete backfill pipelines, and the other end of the two concrete backfill pipelines is communicated with the segment grabbing hole; the flushing system comprises two flushing pipelines, one ends of the two flushing pipelines are communicated with the stirring tank truck, and the other ends of the two flushing pipelines are correspondingly communicated with the other ends of the two concrete backfill pipelines after filling is completed so as to flush the concrete backfill pipelines and reflux flushing fluid to the stirring tank truck. The utility model solves the problem that the existing shield and TBM can not timely fill the gap between the segment and surrounding rock in the tunneling of the hard rock stratum, and ensures the construction quality and safety of the shield and TBM tunnel.

Description

Concrete synchronous filling system behind shield and TBM construction tunnel segment wall

Technical Field

The utility model relates to the technical field of tunnel engineering, in particular to a concrete synchronous filling system after a tunnel segment wall is constructed by a shield and a TBM.

Background

The shield or TBM (Tunnel Boring Machine, full-face tunnel boring machine) has wide application in urban subway tunnel and hydraulic engineering construction, integrates tunneling, supporting, slag discharging and the like, and has high construction speed and high safety. And after the shield and TBM are excavated, synchronously splicing prefabricated segments at the tail position. The prefabricated pipe piece and the surrounding rock have certain gaps, if the gaps between the surrounding rock and the pipe piece are not filled in time, the problems of unstable pipe piece, large deviation between the posture and the design axis, dislocation, breakage, water leakage and the like can be caused. In addition, if the surrounding rock is poor in integrity, the surrounding rock may fall off, resulting in stratum loss, ground subsidence overrun and even ground collapse disasters.

In the prior art, gaps between the rock stratum duct pieces and surrounding rocks are filled, a shield is generally in a mode of pulp supplementing in duct piece grabbing holes, a TBM adopts a method of hydraulic filling with bean gravel and backfilling grouting, and the pulp has strong fluidity and easily flows into the tail of the shield and even flows to a cutter head part along the outer part of a shield shell. If the slurry flows into the shield tail, additional cleaning work is caused, and if the slurry flows to the cutter head part, the cutter head is possibly blocked. In addition, the bean gravel is in broken particles and has a smooth surface, so that the bean gravel can easily flow to the shield body part, and the normal construction is influenced.

In order to prevent the bean gravel, slurry and the like from flowing to the outer side of the shield shell and even the excavation surface, the bean gravel is generally subjected to hydraulic filling after being assembled into about 3-5 rings in the prior art, and the bean gravel is easily blocked at the waist position of the duct piece and the surrounding rock, so that the filling amount of the bean gravel is insufficient, and the gap is not full. Backfill grouting generally delays assembly of more than ten rings or even tens of rings. When the downhill section is driven, the number of hysteresis loops of bean gravel hydraulic filling and backfill grouting is more, the quality of the formed duct piece cannot be guaranteed, and the construction safety is difficult to control.

In the prior art, after bean gravel and slurry are respectively filled or injected into the pipe piece wall, the bean gravel and the slurry cannot be fully mixed, holes possibly exist in part of positions, the strength and the water-blocking capacity are reduced, the deformation of a track caused by the movement of the pipe piece possibly occurs in the later operation process of the subway, or the normal operation of the subway is greatly influenced by the water outlet of a tunnel.

The existing backfill grouting technology generally adopts one grouting pump to perform grouting on one side, and the method can cause uneven stress on two sides of the pipe piece, cause pipe piece displacement, and possibly cause dislocation and damage of the pipe piece and overrun of the posture of the formed pipe piece.

In addition, during backfill grouting, whether the grouting is full is generally judged by observing whether slurry seeps out from the grabbing holes of the nearby segments, and the backfill grouting amount cannot be accurately judged.

After backfilling grouting is finished, the flushing liquid of the slurry conveying pipeline is generally selected to be directly injected into the pipe sheet wall or discharged into the tunnel, if the flushing liquid is injected into the pipe sheet wall, the quality of filling slurry is affected, and if the flushing liquid is discharged into the tunnel, the pressure is brought to cleaning of the tunnel.

Disclosure of Invention

In view of the defects of the prior art, the main purpose of the utility model is to provide a concrete synchronous filling system after shield and TBM construction of tunnel segment walls, so as to solve the problems of quality of formed segments and ground subsidence caused by the fact that synchronous backfill grouting cannot be carried out in shield and TBM construction in the prior art.

The technical scheme of the utility model is as follows:

the utility model firstly provides a concrete synchronous filling system after shield and TBM construction of tunnel segment walls, which comprises the following components: the ground automatic stirring feeding system is arranged on the construction ground of the shield and the TBM, is communicated with the stirring tank truck through a conveying pipeline and is used for conveying concrete into the stirring tank truck; the stirring tank truck is arranged on a tunnel transportation board truck under the well and is used for receiving the concrete conveyed by the ground automatic stirring feeding system through the conveying pipeline and conveying the concrete to a concrete backfill pump; the concrete backfill pump is arranged on a tunnel transportation plate vehicle under the well and is communicated with one end of two concrete backfill pipelines, and the other end of the two concrete backfill pipelines is communicated with the segment grabbing hole; and the flushing system comprises a flushing pipeline, one end of the flushing pipeline is communicated with the stirring tank truck, and the other end of the flushing pipeline is correspondingly communicated with the other ends of the two concrete backfill pipelines after filling is completed so as to flush the concrete backfill pipelines and reflux flushing liquid into the stirring tank truck.

In some embodiments, the agitation tank truck is a lithium battery powered agitation tank truck.

In some embodiments, the lithium battery power stirring tank truck is connected with a power device on one side far away from the concrete backfill pump and comprises a hydraulic transmission system, a motor driving system and a quick lithium battery, wherein the lithium battery power stirring tank truck is connected with the hydraulic transmission system, the hydraulic transmission system is connected with the motor driving system, and the motor driving system is connected with the quick lithium battery.

In some embodiments, the system further comprises a real-time weighing system comprising a weighing device, a downhole computer and a ground computer, wherein the weighing device is placed on the tunnel transportation scooter to bear the stirring tank truck and is in communication connection with the downhole computer below, and the downhole computer is in communication connection with the ground computer.

In some embodiments, the concrete backfill pump comprises two small-volume backfill pumps, the two small-volume backfill pumps are placed on the tunnel transportation vehicle in parallel, one feed inlet is shared by the two small-volume backfill pumps at one side close to the stirring tank vehicle, one discharge outlet is respectively arranged on the two small-volume backfill pumps, and the two discharge outlets are respectively communicated with one concrete backfill pipeline.

In some embodiments, the two concrete backfill pipelines are equally divided into two sections, the front section is a backfill hard pipe, the backfill hard pipe is communicated with a discharge hole of a backfill pump, the rear section is a backfill hose, the tail end of the backfill hose is communicated with the two filling hoses by arranging a Y-shaped tee joint, and the filling hose is communicated with a pipe piece grabbing hole.

In some embodiments, one end of the flushing pipeline is communicated with a tank truck feed inlet of the stirring tank truck, and the other end of the flushing pipeline is provided with a Y-shaped tee joint for being communicated with the filling hose after filling.

In some embodiments, the tunnel transport scooter is a battery scooter.

In some embodiments, the shield also comprises a wear-resistant slurry stop plate, and the wear-resistant slurry stop plate is arranged at the tail part of the shield and the TBM.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a concrete synchronous filling system after a tunnel segment wall is constructed by a shield and a TBM, which solves the problems that the existing shield and TBM cannot timely fill a gap between a segment and surrounding rock in tunneling in a hard rock stratum and the grouting is lagged behind the segment wall, and the quality problem and the ground settlement problem of a formed segment caused by the grouting lagged behind the segment wall, and ensures the construction quality and the safety of the tunnel of the shield and the TBM. Specifically, it has at least the following practical effects:

according to the utility model, concrete is fully and uniformly stirred in the ground automatic stirring feeding system in advance, and is conveyed into the stirring tank car through the conveying pipeline, and the quality of filling materials after the pipe piece wall is ensured through filling the concrete.

According to the utility model, the concrete is filled in the gap between the segment and the surrounding rock, so that the segment can be backfilled in the ring 2 of the segment out of the shield tail, and the filling quality of the segment wall is ensured.

According to the utility model, the lithium battery power stirring tank truck is utilized to prevent concrete from being solidified in advance in the process of transporting in a tunnel, the stirring power is provided by the lithium battery in the process of transporting the stirring tank truck, so that air pollution to the closed environment in the tunnel is avoided, and after the stirring tank truck reaches a construction position, a tunnel shield and TBM construction power system is adopted for stirring and feeding, and meanwhile, the lithium battery is charged rapidly.

According to the utility model, the real-time weighing system is arranged to realize the real-time weighing of the concrete pouring quantity, the weighing data are transmitted to the underground computer, the underground computer transmits the data to the ground computer, and the ground monitoring personnel can realize the real-time control of the concrete pouring compaction degree by analyzing the concrete pouring quantity through the ground computer, so that the condition that the backfill pouring quantity cannot be accurately judged is avoided.

The utility model can realize simultaneous pouring of concrete to four directions of the circumferential direction of the pipe piece and avoid the displacement caused by disturbance of single-direction pouring to the pipe piece.

According to the utility model, the flushing system is arranged to flush the pipeline in time, the flushing liquid flows back into the stirring tank truck, and the tunnel transportation tank truck is used to convey the flushing liquid to the shield and TBM starting well, so that the problem that the pipeline is solidified and the flushing liquid is discharged from no place can be effectively solved.

According to the utility model, the wear-resistant slurry-stopping plate is arranged, so that concrete can be effectively blocked behind the shield tail, and the synchronous filling effect and the construction safety are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims.

FIG. 1 is a schematic diagram of the overall structure of a concrete synchronous filling system after shield and TBM construction of a tunnel segment wall according to some embodiments of the present utility model;

FIG. 2 is a schematic diagram of a power plant and a real-time weighing system of a tank truck according to some embodiments of the present utility model;

FIG. 3 is a schematic illustration of a tank truck and concrete backfill pump according to some embodiments of the present utility model;

FIG. 4 is a schematic top view of a concrete backfill pump structure according to some embodiments of the present utility model;

fig. 5 is a schematic view of a concrete backfill line and a flush line according to some embodiments of the utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the embodiments and the accompanying drawings. The exemplary embodiments of the present utility model and their descriptions herein are for the purpose of explaining the present utility model, but are not to be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "communicating," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method as desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," and the like, does not exclude the presence of other like elements in a product, apparatus, process, or method that includes the element.

It is further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate describing the present utility model and to simplify the description, and do not indicate or imply that the devices, components, or structures referred to must have a particular orientation, be configured or operated in a particular orientation, and are not to be construed as limiting the present utility model. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Based on the problems existing in the prior art, the utility model provides a synchronous filling system for concrete after shield and TBM construction of tunnel segment walls, which aims to solve the problem that synchronous backfill grouting cannot be performed in shield and TBM construction in the prior art.

The implementation of the present utility model will be described in detail with reference to the preferred embodiments.

As shown in fig. 1 to 4, the utility model provides a concrete synchronous filling system after shield and TBM construction of tunnel segment walls, comprising: the automatic ground stirring feeding system 1, the stirring tank truck 3, the concrete backfilling pump 6 and the flushing system.

Specifically, ground automatic stirring feeding system 1 arranges subaerial in tunnel construction for prepare the concrete charge, ground automatic stirring feeding system 1 is through the delivery line 2 that the below is connected with the stirring tank car 3 that sets up in the pit, is used for carrying the concrete charge who prepares to in the stirring tank car 3.

The ground automatic stirring feeding system 1 can be a concrete stirring station, and bean gravel and an anti-dispersion dynamic water grouting material are fully and uniformly stirred into concrete filling materials in advance through the concrete stirring station, so that smooth filling after the wall is ensured, and the quality of the concrete materials after the wall of a duct piece is ensured. It is easy to understand that the concrete filling material is the anti-dispersion concrete prepared from the bean gravel and the anti-dispersion dynamic water grouting material, and can also be prepared from other materials.

The stirring tank truck 3 is placed on a tunnel transportation plate truck 4 in the pit and is used for receiving the concrete conveyed by the ground automatic stirring feeding system 1 through the conveying pipeline 2 and conveying the concrete to the concrete backfill pump 6 through the stirring tank truck 3.

According to the utility model, the underground stirring tank truck 3 is utilized to temporarily store the concrete filling material to be filled, and the tunnel transportation tank truck 4 is utilized to transport the concrete to a construction position, so that the stirring tank truck 3 continuously rotates, the concrete can be prevented from being solidified in advance in the process of transporting the concrete in the tunnel, and the problem of supplying concrete materials is effectively solved. The stirring tank truck 3 and the tunnel transportation plate truck 4 enter and exit the tunnel simultaneously, so that the stirring tank truck 3 can be maintained at the tunnel portal or on the ground, and the difficulty in equipment maintenance in the tunnel is solved.

The concrete backfill pump 6 is placed on the underground tunnel transportation pallet truck 4, the concrete backfill pump 6 is communicated with one end of two concrete backfill pipelines 7, and the other end of the two concrete backfill pipelines 7 is communicated with a duct piece grabbing hole 9. According to the utility model, the two concrete backfill pipelines 7 are filled simultaneously, so that the synchronous filling efficiency can be improved.

The concrete backfill pump 6 is arranged in front of the stirring tank truck 3 along the tunneling direction, and in order to ensure that the concrete filling material is accurately conveyed to the concrete backfill pump 6 from the stirring tank truck 3 during concrete filling, the concrete backfill pump 6 and the stirring tank truck 3 are required to be connected and fixed, wherein the connection can be through bolts passing through lugs correspondingly arranged on the concrete backfill pump 6 or through other connecting pieces, the concrete backfill pump is not specifically described in the concrete backfill pump, and the concrete backfill pump is ensured to be detachably connected.

The pipe piece grabbing holes 9 are used for filling, so that concrete can be fully poured into surrounding rock gaps, and no additional pouring holes are needed.

According to the utility model, concrete is prepared by the ground automatic stirring feeding system 1, and is conveyed to the concrete backfill pump 6 by the underground stirring tank car 3, and the concrete backfill pump 6 fills the concrete to the segment wall through the segment grabbing holes 9 by utilizing two concrete backfill pipelines 7 communicated with the concrete backfill pump 6. According to the utility model, the concrete is filled in the gap between the duct piece 18 and the surrounding rock, so that the duct piece 18 can be backfilled in the tail 2 ring of the shield body 17, and the filling quality of the duct piece wall is ensured.

For the Qingdao subway shield and TBM engineering, most of the crossing stratum is rock stratum, and compared with the soil layer, the stability of the rock stratum is good. When the shield constructs a soil layer, due to the loose characteristic of the soil layer, gaps between the hole wall and the shield shell are filled with soil, and due to the blocking of the soil, slurry is not easy to flow to the shield body and the cutter head during synchronous grouting of the shield. In rock stratum with strong stability, obvious and complete gaps exist between the wall of the hole and the shield shell, for example, grouting is too early, and grout can easily flow to the shield shell and the cutterhead. Therefore, when the shield is used for rock stratum construction, a synchronous grouting process cannot be adopted, and grouting is generally carried out through a segment grabbing hole after the segment is separated from the shield tail decade.

When the TBM is constructed in a rock stratum, the back filling is carried out by adopting a mode of blowing and filling the bean gravel and backfilling grouting, and as the bean gravel and the slurry have certain fluidity, the bean gravel blowing and filling and backfilling grouting can not be carried out in time when the segment is separated from the tail of the shield, the bean gravel blowing and filling generally begins at 3-5 rings of the segment separated from the tail of the shield, the backfilling grouting generally begins at more than ten rings or even tens of rings of the segment separated from the tail of the shield, and the number of lagging rings of the bean gravel blowing and backfilling grouting can be more when the segment is driven down. The lag of shield grouting or TBM hydraulic filling bean gravel and grouting directly leads to hollowed-out after the duct piece, the duct piece can shake and be unstable, the assembly quality of the duct piece is affected, and a series of problems such as duct piece staggering, breakage, water leakage and attitude overrun can be caused in the later stage.

The synchronous filling system for the shield and TBM constructed tunnel duct piece wall rear concrete can finish filling after the duct piece wall is separated from the shield tail 2 ring, stabilize the duct piece in time and well solve a series of safety quality problems caused by filling hysteresis after the duct piece wall. In addition, compared with the bean gravel hydraulic filling and backfilling grouting, the concrete synchronous filling system can save at least 500 yuan per ring, and the construction cost can be greatly saved by using the concrete synchronous filling system.

The flushing system comprises two flushing pipelines 11, one ends of the two flushing pipelines 11 are communicated with the stirring tank truck 3, the other ends of the two flushing pipelines are correspondingly communicated with the other ends of the two concrete backfill pipelines 7 after concrete filling is completed, the flushing system is used for flushing the concrete backfill pipelines 7 and refluxing flushing liquid into the stirring tank truck 3, and the flushing liquid is conveyed to a shield and TBM originating well through the tunnel transportation tank truck 4.

According to the utility model, the whole stirring tank truck 3 can be lifted out from the underground to the ground through a crane, flushing fluid is treated on the ground, or flushing fluid in the stirring tank truck 3 is directly pumped to the ground wastewater treatment position through a pumping device at the shield and TBM starting well for treatment.

It will be readily appreciated that the water used to flush the concrete backfill line 7 in the flushing system is delivered by the concrete backfill pump 6. The utility model washes the concrete backfill pipeline 7 by pouring clear water into the backfill pump feed inlet 601, and returns the flushing liquid into the stirring tank truck 3 through the flushing pipeline 11.

According to the utility model, the flushing system is arranged to reflux the flushing liquid into the stirring tank truck 3, and the flushing liquid is conveyed to the shield and TBM starting well through the tunnel transportation tank truck 4, so that the problem that the flushing liquid is discharged from no place can be effectively solved by performing wastewater treatment in the starting well.

The utility model solves the problem of post-grouting lag of the pipe sheet wall in the existing shield and TBM engineering, and can effectively solve the quality problem and ground subsidence problem of the formed pipe sheet caused by post-grouting lag of the pipe sheet wall.

In some embodiments, the agitation tank truck 3 is a lithium battery powered agitation tank truck.

Referring to fig. 2, a power device is connected to the tail of the lithium battery powered mixing tank truck, namely, the side far away from the concrete backfill pump 6, and comprises a hydraulic transmission system 14, a motor driving system 15 and a quick-charging lithium battery 16. Preferably, the lithium battery power stirring tank truck is connected with a hydraulic transmission system 14, the hydraulic transmission system 14 is connected with a motor driving system 15, and the motor driving system 15 is connected with a quick-charging lithium battery 16.

The lithium battery power stirring tank car provides stirring power through the lithium battery, avoids causing air pollution to the airtight environment in the hole, and after the lithium battery power stirring tank car is transported to the construction position, stirring and feeding power are provided by a shield and TBM construction power system in the tunnel, and meanwhile, the shield and TBM construction power system is utilized to rapidly charge the lithium battery.

With continued reference to fig. 1-2, the shield, TBM post-construction tunnel segment wall concrete synchronous filling system further includes a real-time weighing system 8, the real-time weighing system 8 including a weighing device 801, a downhole computer 802, and a surface computer 803. Preferably, the weighing device 801 is placed on the tunnel transportation pallet truck 4 to bear the agitating lorry 3, the weighing device 801 is in communication connection with the underground computer 802 below, and the underground computer 802 is in communication connection with the ground computer 803.

According to the utility model, the real-time weighing of the concrete pouring quantity can be realized through the real-time weighing system 8, weighing data are transmitted to the underground computer 802, the underground computer 802 transmits the data to the ground computer 803, and ground monitoring personnel can realize real-time control of the concrete pouring compactness by analyzing the concrete pouring quality through the ground computer 803.

Referring to fig. 3, a tank truck feed inlet 301 and a tank truck discharge outlet 302 are arranged on the stirring tank truck 3, the upper end of the tank truck feed inlet 301 is vertically communicated with the conveying pipeline 2, and the lower end is communicated with the tank truck discharge outlet 302. With continued reference to fig. 3, a concrete backfill pump 6 is arranged below the tank truck discharge port 302, the concrete backfill pump 6 is provided with a backfill pump feed port 601 corresponding to the tank truck discharge port 302, two backfill pump discharge ports 602 are arranged below the backfill pump feed port 601 along two sides of the concrete backfill pump 6, and the two backfill pump discharge ports 602 are respectively communicated with the two concrete backfill pipelines 7.

Referring to fig. 4, an embodiment of the present utility model provides a specially designed concrete backfill pump 6, which is composed of two small-volume backfill pumps 603, wherein the two small-volume backfill pumps 603 are arranged on a tunnel transportation pallet truck 4 in parallel, the two small-volume backfill pumps 603 share a feed inlet 601, each of the two small-volume backfill pumps 603 has a discharge outlet 602, and the two discharge outlets 602 are respectively and correspondingly connected with a backfill pipeline 7.

It should be noted that the so-called small volume backfill pump is relatively low in power and volume compared to conventional backfill pumps, and it is well understood by those skilled in the art that this is also convenient to arrange side by side on the tunnel transportation vehicle 4.

According to the utility model, concrete backfilling is carried out by arranging two small-volume backfilling pumps 603 with the same power, each small-volume backfilling pump 603 corresponds to one discharge port 602 respectively, so that the two discharge ports 602 are ensured to be filled with concrete at the same time and the concrete filling quantity is the same, and the displacement of the duct piece is avoided; the device can avoid uneven discharge of the discharge ports arranged on two sides of the edge of a single backfill pump, and simultaneously improves the injection speed, and the original ring needs 20 minutes to be filled, and can be filled only for less than 10 minutes.

In some embodiments, a support frame is arranged at the bottom end of the concrete backfill pump 6, and the concrete backfill pump 6 is fixedly arranged on the tunnel transportation pallet truck 4 through the support frame.

Referring to fig. 4, the two concrete backfill pipelines 7 are divided into front and rear sections, the front section is a backfill hard pipe 701, the backfill hard pipe 701 is communicated with a backfill pump discharge hole 602, the rear section is a backfill hose 702, the tail end of the backfill hose 702 is communicated with two filling hoses 13 by arranging a Y-shaped tee joint 12, and the filling hose 13 is communicated with a duct piece grabbing hole 9. The front hard pipe is convenient to fix and can bear stronger pumping pressure, and the pipe is difficult to block in the concrete conveying process because the front hard pipe is difficult to bend; the rear hose is convenient to be connected with the Y-shaped tee joint, and meanwhile, the rear hose can be flexibly moved, so that grouting can be conveniently carried out on different positions.

It will be readily appreciated that the Y-site 12 of the present utility model refers to a tee junction of approximately Y-shape.

According to the utility model, through arranging four filling hoses 13 to be communicated with the pipe piece grabbing and lifting holes 9 at four different positions in the circumferential direction of the pipe piece 18, the four different positions of the pipe piece 18 can be filled simultaneously, the four pipe piece grabbing and lifting holes 9 are distributed on the left side and the right side of the pipe piece 18, and the problems of pushing and moving of single-side filling concrete to the pipe piece 18 and overlarge posture deviation are solved.

With continued reference to fig. 4, one end of the two flushing pipes 11 is connected to the tank truck feed inlet 301, and the other end is provided with a Y-tee 12, the Y-tee 12 being used for connecting to the filling hose 13 after filling of concrete is completed.

Preferably, the connection method among the backfill hard tube 701, the backfill soft tube 702, the flushing pipeline 11, the Y-shaped tee 12 and the filling soft tube 13 is a buckle connection. The pipeline is convenient to install and detach, and when the pipeline is blocked, the blocked part can be cleaned rapidly, so that the working time is saved.

In some embodiments, the tunnel transport drams 4 are battery drams.

With continued reference to fig. 1, the concrete synchronous filling system after the shield and TBM construction of the tunnel segment wall further comprises a wear-resistant slurry stop plate 10, wherein the wear-resistant slurry stop plate 10 is arranged at the tail part of the shield body 17, namely the tail part of the shield and TBM. The wear-resistant slurry-stopping plate can effectively stop concrete behind the shield tail, prevent the concrete from flowing to the outside of the shield body 17 or the inside of the shield body 17, and improve synchronous filling effect and construction safety.

Preferably, the wear-resistant slurry-stop plate 10 is a multi-layer wear-resistant slurry-stop plate.

The utility model solves the problems that the existing shield and TBM tunneling in a hard rock stratum cannot fill the gap between the pipe piece and surrounding rock in time and the grouting is lagged behind the pipe piece wall, and the quality problem of the formed pipe piece and the ground subsidence problem caused by the grouting lagged behind the pipe piece wall, and ensures the construction quality and the safety of the shield and TBM tunnel.

The synchronous concrete filling process after the shield and TBM construction of the tunnel segment wall is simple to operate, the concrete backfilling can be realized when the segment is taken out of the ring 2 of the shield tail, the gap between the segment and surrounding rock can be filled in time, and the quality of the formed segment and the construction safety are ensured. The method comprises the following steps:

s100: uniformly mixing and stirring bean gravel, an anti-dispersion dynamic water grouting material and the like by using a ground automatic stirring and feeding system 1 to prepare concrete;

s200: conveying the concrete into a stirring tank truck 3 under the well through a conveying pipeline 2;

s300: transporting the stirring tank truck 3 to a shield and TBM construction position by using a tunnel transportation board truck 4 and conveying concrete into a concrete backfilling pump 6;

s400: the two concrete backfill pipelines 7 connected with the concrete backfill pump 6 pump concrete to the gap after the pipe piece wall is filled through the pipe piece grabbing holes 9;

s500: after the concrete filling is finished, a flushing pipeline 11 is communicated with the concrete backfill pipeline 7, the concrete backfill pipeline 7 is flushed by pouring clear water into a feed inlet 601 of a backfill pump, and the flushing liquid flows back into the stirring tank truck 3 through the flushing pipeline 11;

s600: the agitating tank truck 3 is transported to a shield and TBM originating well through a tunnel transportation tank truck 4, and the flushing liquid is treated in the originating well.

Further, the stirring tank truck 3 is a lithium battery power stirring tank truck, and the stirring tank truck 3 is kept rotating by adopting the power supplied by the lithium battery in the transportation process, so that the concrete is prevented from being solidified.

Further, after the stirring tank truck 3 reaches the construction position, concrete is conveyed to a backfill pump feeding hole 601 through a tank truck discharging hole 302, the backfill pump feeding hole 601 is connected with two concrete backfill pipelines 7 through two backfill pump discharging holes 602 arranged on two sides below, the tail end of each concrete backfill pipeline 7 is communicated with two pouring hoses 13 through a Y-shaped tee joint 12, and the pouring hoses 13 are communicated with a pipe piece grabbing hole 9.

Further, after the concrete filling is completed, the pouring hose 13 is communicated with a Y-shaped tee arranged at the tail end of the flushing pipeline 11.

It is easy to understand by those skilled in the art that the above preferred embodiments can be freely combined and overlapped without conflict.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (9)

1. The utility model provides a shield, TBM construction tunnel section of jurisdiction wall back concrete synchronous filling system which characterized in that includes:

the ground automatic stirring feeding system (1) is arranged on the construction ground of the shield and the TBM, is communicated with the stirring tank truck (3) through a conveying pipeline (2) and is used for conveying concrete into the stirring tank truck (3);

the stirring tank truck (3) is arranged on a tunnel transportation tank truck (4) in the pit and is used for receiving concrete conveyed by the ground automatic stirring feeding system (1) through the conveying pipeline (2) and conveying the concrete to the concrete backfilling pump (6);

the concrete backfill pump (6) is arranged on the underground tunnel transportation pallet truck (4), the concrete backfill pump (6) is communicated with one end of two concrete backfill pipelines (7), and the other end of the two concrete backfill pipelines (7) is communicated with the duct piece grabbing hole (9); and

the flushing system comprises a flushing pipeline (11), one end of the flushing pipeline (11) is communicated with the stirring tank truck (3), and the other end of the flushing pipeline is correspondingly communicated with the other end of the concrete backfill pipeline (7) after filling is completed so as to flush the concrete backfill pipeline (7) and reflux flushing fluid into the stirring tank truck (3).

2. The synchronous filling system for the shield and TBM constructed tunnel segment wall rear concrete according to claim 1, wherein the stirring tank truck (3) is a lithium battery power stirring tank truck.

3. The shield and TBM construction tunnel segment wall rear concrete synchronous filling system according to claim 2, wherein a power device is connected to one side of the lithium battery power stirring tank truck, which is far away from the concrete backfill pump (6), and comprises a hydraulic transmission system (14), a motor driving system (15) and a quick lithium battery (16), the lithium battery power stirring tank truck is connected with the hydraulic transmission system (14), the hydraulic transmission system (14) is connected with the motor driving system (15), and the motor driving system (15) is connected with the quick lithium battery (16).

4. The shield, TBM construction tunnel segment wall post-concrete synchronous filling system according to claim 1, further comprising a real-time weighing system (8), wherein the real-time weighing system (8) comprises a weighing device (801), a downhole computer (802) and a ground computer (803), the weighing device (801) is placed on the tunnel transportation vehicle (4) to bear the stirring tank truck (3) and is in communication connection with the downhole computer (802) below, and the downhole computer (802) is in communication connection with the ground computer (803).

5. The synchronous filling system for shield and TBM construction tunnel segment wall rear concrete according to claim 1, wherein the concrete backfill pump (6) consists of two small-volume backfill pumps (603) which are arranged on the tunnel transportation vehicle (4) side by side, one feeding port (601) is shared by the two small-volume backfill pumps (603) at one side close to the stirring tank vehicle (3), one discharging port (602) is respectively arranged on the two small-volume backfill pumps (603), and the two discharging ports (602) are respectively communicated with one concrete backfill pipeline (7).

6. The concrete synchronous filling system after shield construction and TBM construction of tunnel segment walls according to claim 5, wherein the two concrete backfill pipelines (7) are equally divided into two sections, the front section is a backfill hard pipe (701), the backfill hard pipe (701) is communicated with a backfill pump discharge port (602), the rear section is a backfill hose (702), the tail end of the backfill hose (702) is communicated with two filling hoses (13) by arranging a Y-shaped tee joint (12), and the filling hoses (13) are communicated with segment grabbing holes (9).

7. The synchronous filling system for shield-driven and TBM construction tunnel segment wall rear concrete according to claim 6, wherein one end of the flushing pipeline (11) is communicated with a tank truck feed port (301) of the stirring tank truck (3), and the other end is provided with a Y-shaped tee joint (12) for being communicated with the filling hose (13) after filling.

8. The shield and TBM construction tunnel segment wall rear concrete synchronous filling system according to claim 1, wherein the tunnel transportation plate vehicle (4) is a battery plate vehicle.

9. The synchronous filling system for the shield and TBM construction tunnel segment wall rear concrete according to claim 1, further comprising a wear-resistant slurry stop plate (10), wherein the wear-resistant slurry stop plate (10) is arranged at the tail of the shield and TBM.

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