CN210003279U

CN210003279U - large-span multi-structure back-pushing type shield equipment

Info

Publication number: CN210003279U
Application number: CN201920907939.4U
Authority: CN
Inventors: 马利
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-01-31
Anticipated expiration: 2029-06-17

Abstract

The application provides large-span multi-structure back-pushing type shield equipment which comprises a left shield body, a right shield body and a widened shield body detachably connected between the left shield body and the right shield body, wherein the left shield body, the right shield body and the widened shield body respectively comprise a shield chamber, an edge angle, a jacking mechanism, a tongue plate and a tongue plate telescopic mechanism, the edge angle is connected to end of the shield chamber, the tongue plate is connected to end, far away from the edge angle, of the shield chamber in a sliding mode through the tongue plate telescopic mechanism, and the jacking mechanism is arranged in parallel to the advancing direction of the shield equipment and connected with the shield chamber.

Description

large-span multi-structure back-pushing type shield equipment

Technical Field

The application relates to the technical field of tunneling construction equipment, in particular to kinds of large-span multi-structure back pushing type shield equipment.

Background

With the technological progress, the urbanization pace is accelerated, the old city reconstruction task is heavier, the ground traffic pressure is heavier, and the traffic jam phenomenon is serious; in addition, the pipeline is seriously aged after reaching the designed service life, the condition of scrapping exists at any time, the dangerous hidden danger of major accidents exists, and in order to discharge the hidden dangers, the normal life of people is ensured, and the phenomenon of the zipper on the road is serious because the digging and filling are only carried out.

In order to solve the outstanding problems, the matching of urban infrastructure is perfected, various contradictions are effectively solved, underground resources of the existing road are fully utilized, a shield is typical tunneling equipment in underground engineering, and the shield equipment is heavy-load construction equipment which performs operations such as soil excavation, soil residue discharge and transportation, complete machine propulsion, segment installation and the like under the support of a metal shell and enables times of tunnel forming.

In the prior art, the shield equipment has the following defects: the span is little, and the usage is few, and whole can not split, and in addition, prior art's shield structure is equipped for the construction of full working face, can not expand the construction of full working face to constrictive place, consequently, constrictive place construction is difficult, and the construction progress is slow.

SUMMERY OF THE UTILITY MODEL

The application aims to provide kinds of large-span multi-structure back-pushing type shield equipment which has the characteristics of large span, multiple layers, multiple purposes, stable structure, high firmness, detachable structure and suitability for a range of .

In order to achieve the purpose, the application provides large-span multi-structure back-pushing type shield equipment which comprises a left shield body, a right shield body and a widened shield body detachably connected between the left shield body and the right shield body, wherein the left shield body, the right shield body and the widened shield body respectively comprise a shield chamber, a cutting edge, a jacking mechanism, a tongue plate and a tongue plate telescopic mechanism, the cutting edge is connected to the end of the shield chamber, the tongue plate is connected to the end, far away from the cutting edge, of the shield chamber in a sliding mode through the tongue plate telescopic mechanism, and the jacking mechanism is arranged in parallel to the advancing direction of the shield equipment and is connected with the shield chamber.

The shield chamber of the left shield body comprises a left top plate, a left bottom plate and a left vertical plate, the left top plate and the left bottom plate are arranged in parallel at intervals, two ends of the left vertical plate are respectively connected to the end parts of the left top plate and the left bottom plate, the ends of the left top plate and the left bottom plate, which are far away from the left vertical plate, are connected with the widened shield body, the shield chamber of the right shield body comprises a right top plate, a right bottom plate and a right vertical plate, the right top plate and the right bottom plate are arranged in parallel at intervals, two ends of the right vertical plate are respectively connected to the end parts of the right top plate and the right bottom plate, and the ends of the right top plate and the right bottom plate, which are far away from the right vertical plate, are connected with the widened.

As above, wherein the shield chamber of the widened shield body comprises an upper extension plate and a lower extension plate, both of which are horizontal plates, the end of the upper extension plate is detachably connected with the left top plate, the end is detachably connected with the right top plate, the end of the lower extension plate is detachably connected with the left bottom plate, and the end is detachably connected with the right bottom plate.

As above, wherein a support cylinder is connected between the left top plate and the left bottom plate; a supporting cylinder is connected between the right top plate and the right bottom plate; and a supporting cylinder is connected between the upper extending plate and the lower extending plate.

As above, the left top plate, the left bottom plate, the left upright plate, the right top plate, the right bottom plate, the right upright plate, the upper extension plate and the lower extension plate all include an inner plate and an outer plate, the inner plate and the outer plate are arranged at intervals, and both the inner plate and the outer plate are fixedly connected with the end face of the blade angle.

As above, wherein the jacking mechanism is a jacking cylinder disposed between the inner and outer decks.

As above, the pushing cylinder is connected with a back pushing plate, the back pushing plate is arranged at ends of the inner layer plate and the outer layer plate far away from the cutting edge, and the back pushing plate is arranged at the inner side of the tongue plate.

The back push plate is provided with an observation hole, a steel bar hanging hole and a high-pressure concrete injection hole.

As above, wherein the tongue plate and the tongue plate retracting mechanism are disposed between the inner plate and the outer plate.

As above, wherein the knife angle comprises a sharp portion, the knife angle is angularly connected to the shield chamber tiltable .

The beneficial effect that this application realized is as follows:

(1) this application shield is equipped and is widened the shield body including detachable, and the installation is widened the shield body and can be widened the width that the shield was equipped to widen the shield body and can design for different sizes, with the needs that satisfy different width, this application has the characteristics of large-span, has improved the application scope that the shield was equipped.

(2) The shield equipment comprises a left shield body and a right shield body which can be split, wherein the left shield body and the right shield body can be used for transversely jacking the side wall of a working pit after being additionally provided with a temporary table back and a temporary jacking cylinder, and the shield equipment is suitable for construction in narrow places.

(3) The construction mode that this application shield constructs equipment does not destroy current situation road surface structure, ensures that normal traffic is smooth, does not destroy all kinds of pipelines of current situation, ensures normal operation, does not disturb the people, and is pollution-free, does not destroy landscape facilities such as trees, lawn, ground annex, is applicable to all kinds of geological structure (except that gush water in a large number), and application scope can do multiple use and be suitable for.

(4) The concrete member can be poured on site, concrete members in different shapes and sizes can be poured, the randomness is strong, and the application range is .

(5) The corridor is built underground, land resources do not need to be occupied, and land cost is zero.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only the embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a schematic structural diagram of kinds of large-span multi-structure back-pushing type shield equipment of the present invention.

Fig. 2 is a schematic structural diagram of the left back push plate of the kinds of large-span multi-structure back pushing type shield equipment of the present invention.

Fig. 3 is the utility model discloses back of the body push pedal and steel bar hanger's connection schematic diagram.

Fig. 4 is a schematic view of the blade angle structure of kinds of large-span multi-structure back-pushing type shield equipment of the present invention.

Fig. 5 is a schematic diagram of a lateral jacking structure of kinds of large-span multi-structure back-pushing type shield equipment of the present invention.

Fig. 6 is a schematic structural diagram of a transverse pushing frame and a transverse pushing blade angle of kinds of large-span multi-structure back-pushing type shield equipment of the present invention.

Figure 7 is the structure schematic diagram of the concrete box culvert of the utility model.

Fig. 8 is a schematic view of the pipeline and vertical traffic of the present invention.

Reference numerals: 1-left shield body; 2-right shield body; 3-widening the shield body; 4-back push plate; 5-edge angle; 6-tongue plate; 7-jacking the cylinder; 8-a support cylinder; 9-temporary table back; 10-temporary propulsion cylinder, 11-left top plate; 12-a left bottom plate; 13-left vertical plate; 14-tongue plate telescoping mechanism; 21-right top plate; 22-right bottom plate; 23-a right vertical plate; 31-an upper extension plate; 32-lower extension plate; 41-observation hole; 42-steel bar hanging hole; 43-concrete hole injection; 44-template U-shaped clamping holes; 45-a bulge point; 46-a steel bar hanger; 51-left edge angle; 52-widening the edge angle; 53-right cutting edge angle; 54-a threaded hole; 55-pushing the edge angle transversely; 56-transversely pushing the frame; 57-a rotating shaft; 58-a supporting frame; 100-concrete box culvert; 101-a fabrication column; 102-a structural beam; 103-bidirectional traffic lane; 104-rain flood discharge channel; 105-a natural gas line; 106-intermediate water line; 107-weak current lines; 108-strong electric lines; 109-tap water line; 110-sewer line; 111-thermal line; 112-pipe gallery; 113-a bidirectional driveway digging starting point; 114-downward slope.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all embodiments of .

As shown in figure 1, large-span multi-structure back-pushing type shield equipment comprises a left shield body 1, a right shield body 2 and a widened shield body 3 detachably connected between the left shield body 1 and the right shield body 2, wherein the widened shield body 3 is detachably connected between the left shield body 1 and the right shield body 2, the widened shield body 3 is selectively installed or removed according to actual width requirements, the left shield body 1, the right shield body 2 and the widened shield body 3 respectively comprise a shield room, a cutting edge 5, a jacking mechanism, a tongue plate 6 and a tongue plate telescopic mechanism 14, the cutting edge 5 is connected to a end of the shield room, the tongue plate 6 is connected to a end of the shield room far away from the cutting edge 5 in a sliding mode through the tongue plate telescopic mechanism 14, the jacking mechanism is arranged in parallel to the advancing direction of the shield equipment and is fixedly connected with the shield room, the widened cutting edge 5 and the widened cutting edge 6 are respectively connected to two ends of the left shield body 1, the right shield body 2 and the shield body 3, the sharp portion is used for jacking soil, the widened cutting edge 5 is fixedly connected with the left shield body and the pushing plate 36, and the pushing plate 36 and the pushing plate 3.

Jacking mechanism promotes the shield and equips and gos forward, hyoplastron 6 stretches out gradually, treat that hyoplastron 6 stretches out the back completely, the shield is equipped to stop to go forward, concreting box culvert 100 is pour in the inboard box culvert template of hyoplastron 6, the width of hyoplastron 6 slightly wider in the width of the working section of concrete box culvert 100, so that hyoplastron 6 has definite overlap joint with the edge of concrete box culvert 100 all the time, in order to ensure that hyoplastron 6 is indeformable, do not sink, unbending, thereby make the shield equip inside confined spaces that form, ensure staff's safety.

As shown in fig. 1, the shield room of the left shield body 1 includes a left top plate 11, a left bottom plate 12 and a left vertical plate 13, the left top plate 11 and the left bottom plate 12 are arranged in parallel and spaced apart, two ends of the left vertical plate 13 are respectively connected to the ends of the left top plate 11 and the left bottom plate 12, the left top plate 11, the left bottom plate 12 and the left vertical plate 13 are fixedly connected by bolts, the left top plate 11, the left bottom plate 12 and the left vertical plate 13 enclose the shield room of the left shield body 1, the construction in the shield room is safe and reliable, the ends of the left top plate 11 and the left bottom plate 12 far away from the left vertical plate 13 are connected with the shield body 3, and the width of the shield equipment is increased by connecting and widening the shield body 3, so that;

as shown in fig. 1, the shield room of the right shield body 2 includes a right top plate 21, a right bottom plate 22 and a right vertical plate 23, the right top plate 21 and the right bottom plate 22 are arranged in parallel and spaced apart, two ends of the right vertical plate 23 are respectively connected to the end portions of the right top plate 21 and the right bottom plate 22, the right top plate 21, the right bottom plate 22 and the right vertical plate 23 enclose the shield room of the right shield body 2, and the ends of the right top plate 21 and the right bottom plate 22 far away from the right vertical plate 23 are connected to the widened shield body 3.

As shown in fig. 1, the shield room of the widened shield body 3 includes an upper extension plate 31 and a lower extension plate 32, both the upper extension plate 31 and the lower extension plate 32 are horizontal plates, the end of the upper extension plate 31 is detachably connected with the left top plate 11, the end is detachably connected with the right top plate 21, the end of the lower extension plate 32 is detachably connected with the left bottom plate 12, the end is detachably connected with the right bottom plate 22, if the width of the work pit to be tunneled is wide, the upper extension plate 31 and the lower extension plate 32 are respectively connected between the left shield body 1 and the right shield body 2, otherwise, the upper extension plate 31 and the lower extension plate 32 are not required to be installed.

As shown in fig. 1, a support cylinder 8 is connected between the left top plate 11 and the left bottom plate 12; a supporting cylinder 8 is connected between the right top plate 21 and the right bottom plate 22; go up and be connected with between extension plate 31 and the lower extension plate 32 and support jar 8, support jar 8 is used for supporting at the shield indoor, improves the stability and the firmness of shield room structure, as required, multiplicable or reduce the quantity of support jar 8 to can remove the position of support jar 8 according to the construction needs, when the position of support jar 8 is removed to needs, will support jar 8's telescopic link withdrawal, manual movement supports jar 8 to the position that does not hinder the construction.

Preferably, the left top plate 11, the left bottom plate 12, the left vertical plate 13, the right top plate 21, the right bottom plate 22, the right vertical plate 23, the upper extension plate 31 and the lower extension plate 32 all comprise inner plates and outer plates which are arranged at intervals, and the inner plates and the outer plates are arranged at intervals so as to facilitate installation of the tongue plates 6 and the jacking cylinders 7, so that the shield equipment is compact in structure, stable and reliable.

Preferably, the jacking mechanism is a jacking cylinder 7, the jacking cylinder 7 comprises a cylinder barrel and an expansion link, the expansion link is connected in the cylinder barrel, the jacking cylinder 7 is arranged between an inner plate and an outer plate in parallel, the number of the jacking cylinders 7 can be increased or decreased according to the soil quality, preferably, the end of the jacking cylinder 7 is fixedly connected with the knife edge 5, the end is connected with the back push plate 4, the back push plate 4 is fixed during jacking, the shield equipment advances, specifically, the cylinder barrel is parallel to the end face of the inner plate and the end face of the knife edge 5 and is fixedly connected with the back push plate 4, and the jacking cylinder 7 is used for pushing the shield equipment to advance.

As shown in figure 1, a jacking cylinder 7 is connected with a back push plate 4, the back push plate 4 is arranged at the end of an inner layer plate and an outer layer plate far away from an edge 5 and is separated from the inner layer plate and the outer layer plate, the back push plate 4 is positioned on the inner side of a tongue plate 6, the width of the back push plate 4 is the same as or slightly wider than the thickness of a concrete box culvert 100, when the jacking cylinder 7 jacks, the back push plate 4 is not moved, the back push plate 4 jacks the end surface of the concrete box culvert 100, the tongue plate 6 moves relative to the back push plate 4 in the advancing direction of shield equipment, after the shield equipment moves forward for sections, the distance is the same as the width of a box culvert group of the concrete box culvert 100, then an expansion rod of the jacking cylinder 7 retracts into a cylinder barrel so as to retract the back push plate 4 to the end part of a shield room, the back push plate 4 is spaced apart from the end surface of the concrete box culvert 100 by for forming a side baffle of the poured concrete box culvert 100, and the is poured in a gap between the poured concrete box culvert group which is the same as width of the poured shield culvert.

As shown in fig. 1 and fig. 2, the back push plate 4 is disconnected according to the section, the back push plate 4 comprises a left back push plate, a right back push plate and a middle back push plate, the left back push plate is arranged at the end part of the left shield room, the right back push plate is arranged at the end part of the right shield room, the middle back push plate is arranged between the left back push plate and the right back push plate, the right back push plate is the same as the left back push plate in shape, in general, the left back push plate, the right back push plate and the middle back push plate are arranged in the same plane, and a side baffle plate for pouring the concrete box culvert 100.

As shown in fig. 2, the back push plate 4 is provided with concrete injection holes 43, the concrete injection holes 43 are located at the top of the back push plate 4, and concrete is injected into the box culvert template (the interior of the box culvert is cavities) through the concrete injection holes 43 to form a concrete box culvert 100.

As shown in fig. 2, the back push plate 4 is provided with an observation hole 41, the observation hole 41 is used for observing whether grouting in the box culvert template is full, a cavity is formed inside the box culvert template, and groups of box culverts are formed after concrete is poured in the cavity.

As shown in fig. 2 and 3, reinforcing steel bar hanger hole 42 is reserved to back push pedal 4, arrange reinforcing steel bar hanger 46 in reinforcing steel bar hanger hole 42, reinforcing steel bar hanger 46 includes the horizon bar, vertical pole and down tube, the horizon bar is connected with vertical pole is perpendicular, the down tube slope is connected between horizon bar and vertical pole, ends that the horizon bar is connected with vertical pole stretch into reinforcing steel bar hanger hole 42 in, be used for supporting main muscle on the horizon bar, the horizon bar hangs main muscle so that with the reinforcement, behind the concreting in the box culvert template, the reinforcing bar is inserted in the concrete, the reinforcing bar is used for improving 100 structural strength of concrete box culvert.

As shown in fig. 2, the back push plate 4 is provided with a square protrusion 45, the protrusion thickness of the protrusion 45 is 1-2 cm, the protrusion 45 is used for hanging a U-shaped template clip (a hook for connecting a template), and a steel bar hook of the U-shaped template clip is connected with a main steel bar.

The back push plate 4 has the functions of (1) pushing the back push plate 4 against the end part of the concrete box culvert 100 when the shield equipment is pushed in, keeping the back push plate 4 immovable, pushing the end of the jacking cylinder 7 against the back push plate 4, and pushing the shield equipment forwards at the end , (2) moving the back push plate 4 forwards for sections of distance after the shield equipment is pushed in forwards to form a side baffle for pouring concrete, (3) pouring concrete into the box culvert template through a concrete pouring hole 43 of the back push plate 4, (4) observing the concrete pouring condition in the box culvert template through an observation hole 41 of the back push plate 4, (5) fixing a steel bar hanging rack 46 through a steel bar hanging rack hole 42 of the back push plate 4, wherein the steel bar hanging rack 46 is used for binding steel bars, and (6) connecting the box culvert template through a salient point 45 of the back push plate 4.

According to the utility model discloses an embodiments, the box culvert template is by hyoplastron 6, back of the body push pedal 4, the terminal surface of concrete box culvert 100, the cope match-plate pattern, side form and die block center on forming, back of the body push pedal 4 is on a parallel with the terminal surface of concrete box culvert 100, back of the body push pedal 4 is spaced apart from the terminal surface of concrete box culvert 100, hyoplastron 6 parcel back of the body push pedal 4, and with the terminal surface overlap joint of concrete box culvert 100, the cope match-plate pattern, side form and die block are on the spot installation and all connect at the inward flange of back of the body push pedal 4, the cope match-plate pattern, side form and die block are on a parallel with hyoplastron 6 and set up the inboard at hyoplastron 6, and with hyoplastron 6 spaced apart section distances, the top of cope match-plate pattern connection in the die block, the both ends at.

Preferably, the tongue plate 6 and the tongue plate telescopic mechanism 14 are arranged between the inner layer plate and the outer layer plate, the tongue plate telescopic mechanism 14 is an oil cylinder, the oil cylinder comprises a cylinder barrel and a telescopic rod, the telescopic rod is connected in the cylinder barrel, the cylinder barrel is fixed in the shield room, and the telescopic rod is connected with the tongue plate 6.

As shown in fig. 4, the cutting edge 5 includes a left cutting edge 51, a widened cutting edge 52 and a right cutting edge 53, the left cutting edge 51, the right cutting edge 53 and the widened cutting edge 52 are respectively connected to the advancing ends of the left shield body 1, the right shield body 2 and the widened shield body 3, the cutting edge 5 is connected to the side end faces of the left shield body 1, the right shield body 2 and the widened shield body 3 through bolts, the cutting edge 5 is connected to the side end faces of the left shield body 1, the right shield body 2 and the widened shield body 3 through a rotating shaft 57, the rotating shaft 57 is arranged parallel to the edge line of the cutting edge 5, and -determined angles can be formed between the cutting edge 5 and the left shield body 1, the right shield body 2 and the widened shield body 3, so that the advancing direction of the shield equipment can be adjusted.

As shown in fig. 4, a threaded hole 54 is formed in the end face of the cutting edge 5, a bolt is arranged in the threaded hole 54, the cutting edge 5 is connected with the shield room through the bolt, and the cutting edge and the shield room can be obliquely for fixed angle connection, so that the shield equipment can be corrected or actively steered.

As shown in fig. 7, the concrete box culvert 100 includes a plurality of groups of box culverts, the plurality of groups of box culverts are arranged in parallel and tightly attached to each other, a constructional column 101 and a structural beam 102 are arranged in the plurality of groups of box culverts, the constructional column 101 and the box culverts are connected by a main steel bar or a steel plate, so that the connection is stable, and the structural beam 102 and the box culverts are connected by a main steel bar or a steel plate, so that the connection is stable; the constructional columns 101 are supported in the box culvert along the vertical direction, and a plurality of constructional columns 101 are arranged at intervals along the arrangement direction of a plurality of groups of box culverts; structural beam 102 connects between two adjacent constructional columns 101, structural beam 102 and constructional column 101 fixed connection to structural beam 102 connects at the top bottom surface of box culvert for support box culvert top, improve the stability and the firmness of box culvert.

According to the utility model discloses an concrete examples, adopt the ML worker method to carry out the construction, ML worker method includes the construction method of full operation face, the construction method of not full operation face, solid or perpendicular intersection construction method.

The utility model discloses a construction method of kinds of full working faces as follows:

and after scientific site selection, a vertical shaft or a slope pavement is dug downwards to a designed elevation, a simple platform back protecting wall is manufactured to level the base of the working pit, and the width of the working surface is required to meet the size requirements of the left shield room and the right shield room.

The method comprises the following steps of installing all parts of the shield equipment, specifically, hanging a left bottom plate 12 and a right bottom plate 22 to the base of a working pit and leveling the parts, installing a left vertical plate 13, a right vertical plate 23, a left top plate 11, a right top plate 21, a back push plate 4 and the like to form the complete shield equipment, and if the width of a working face is wide, installing an upper extension plate 31 and a lower extension plate 32, leveling and straightening the parts.

Installing the steel bar structure, transporting the main reinforcement and the stirrup that make off-site to the work hole in, putting into back of the body push pedal 4 with steel bar hanger 46 and reserving steel bar hanger hole 42, place back on steel bar hanger 46 with main reinforcement and stirrup respectively, carry out the ligature shaping, after the ligature is accomplished, will reserve on the square salient point 45 of template U type card hangs back of the body push pedal 4, the steel bar couple of template U type card links to each other with the main reinforcement.

The template forming the concrete pouring space is installed, the steel bars are bound, after the template is checked to be qualified, the template U-shaped clamping holes 44 are reserved by the back push plate 4, the top template, the bottom template and the side templates forming the concrete pouring space are installed, at the moment, the tongue plates 6, the back push plate 4, the top template, the bottom template, the side templates and the platform back (the end face of the concrete box culvert 100) which are supported at present form closed box bodies, and when the strength of concrete cannot meet the design requirement, the lower part of the top template needs to be supported by the stand columns in a conventional mode.

After the box culvert template is installed, self-compacting rapid hardening concrete is poured into the box culvert template from the reserved concrete pouring holes 43, and whether the box culvert template is filled with the concrete or not is observed through the observation holes 41.

After concrete pouring is finished, a hydraulic pump station is started, the hydraulic pump station is gradually jacked, when the hydraulic pump station is jacked, the back push plate 4 props against a concrete box culvert 100 and is not moved, the shield equipment is jacked into the soil under the action of a jacking cylinder 7, wherein the end of the jacking cylinder 7 props against the back push plate 4, the other end of the hydraulic pump station is used for propelling the shield equipment to move forwards until the shield equipment is jacked to a designed position, a top template, a bottom template and a side template which are installed previously are removed (if the concrete does not meet the strength design requirement), the jacking cylinder 7 is used for recovering the back push plate 4, at the moment, a tongue plate 6 is just lapped or wrapped outside the box culvert, working cycles are completed, the groups of box culverts are gradually propelled according to the method, preferably, the upper and lower slopes of a blade angle 5 connected with a left top plate and a blade angle 5 connected with a left bottom plate are 1: 0.3, the natural slope of the soil is just formed, so as to ensure that the natural collapse phenomenon of a mineral pressure layer cannot occur naturally, preferably, a loader, the excavating operation is carried out of a digging machine, the digging speed is not fast, the digging operation is not as the digging speed is not fast as long as the digging speed is not fast as the digging speed is fast, the digging speed is not fast as the digging.

For the construction that the whole working face can not be unfolded at the narrow part, non-whole working face construction methods, namely a transverse jacking method is adopted for construction, and then a full working face construction method is adopted, wherein the transverse jacking method is adopted as follows:

the method for transversely jacking the right side of the working pit comprises the following steps:

the shield tunneling method comprises the steps of installing shield tunneling equipment, placing a manufactured transverse pushing cutting edge 55 and a manufactured transverse pushing frame 56 shown in figure 6 into a working pit, fixedly connecting the transverse pushing cutting edge 55 to the side portion of the transverse pushing frame 56, enabling the transverse pushing cutting edge 55 to face the side wall of the working pit, then installing a supporting frame 58 (shown in figure 5) at the end, far away from the cutting edge 5, of the transverse pushing frame 56 (shown in figure 6), respectively installing a right top plate 21 and a right bottom plate 22 at the top and the bottom of the supporting frame 58 (shown in figure 5), carrying out steps, installing a temporary table back 9 and a temporary pushing cylinder 10 shown in figure 5, fixedly connecting a cylinder barrel of the temporary pushing cylinder 10 with the temporary table back 9, enabling an expansion rod to abut against the end portion of the supporting frame 58, not installing the right vertical plate 23, enabling the right side of the shield tunneling equipment to be open, facilitating excavation of the right earth of the shield tunneling equipment, carrying out steps, and arranging a retaining plate on the side of the.

And (3) digging out the earthwork on the right side of the working pit, starting the temporary propelling cylinder 10, enabling the temporary table back 9 to be fixed, enabling the temporary propelling cylinder 10 to push the supporting frame 58, the transverse pushing frame 56, the right top plate 21, the right bottom plate 22 and the edge angle 5 to the right side of the working pit, and gradually pushing the right top plate 21 and the right bottom plate 22 to the designed position according to the method, so that the width of the working pit is widened, and the construction of the whole working face is facilitated.

The method of lateral pushing to the left side of the work pit is the same as the method of lateral pushing to the right side of the work pit.

After the transverse jacking is finished, removing the redundant transverse pushing frame 56, the transverse pushing blade angle 55 and the like, installing the right vertical plate 23 and the left vertical plate 13, selectively installing or not installing the upper extension plate 31 and the lower extension plate 32 according to the width requirement of the shield equipment, installing the shield equipment according to the connection mode shown in the figure 1, and performing the construction of the whole working face after the leveling fastening detection is error-free.

According to the utility model discloses a concrete embodiment follow low reaches backbone section, and the section is reformed transform in proper order year by year, establishes the underground traffic network of intercrossing box culvert and installs the corridor of operation maintenance to the orderly management of all kinds of pipelines.

As shown in fig. 8, the box culvert is provided with a bidirectional roadway 103 at the middle part, holes are formed at the left and right sides of the bidirectional roadway 103, rainwater flood discharge channels 104 are formed at the bottoms of the holes at the two sides, sewage pipelines 110 or pipelines such as a tap water pipeline 109, a thermal pipeline 111, a natural gas pipeline 105 and a central water pipeline 106 are fixed on the middle upper part of the holes at the two sides by a vertical plate, sewage is gathered to a sewage farm through the sewage pipelines 110 for treatment, and rainwater can be discharged along the rainwater flood discharge channels 104 at the bottom of the box culvert in a centralized manner. The sewage pipeline 110 is provided with a strong electric pipeline 108 above, the top of the box culvert can be used as a weak electric pipeline 107, preferably, the box culvert is provided with a manhole and a vent, when no rain exists, people can enter a rainwater channel of the box culvert to check, overhaul and install various pipelines, and the phenomenon of digging a road zipper on the ground is avoided.

According to the utility model discloses a concrete embodiment, the mid portion of box culvert is established to two-way lane 108, two box culvert plane orthorhombic department can do and dig down ramp 114, dig down ramp 114 from two-way lane dig down starting point 113 and begin the downward sloping and pass the cross plane bottom perpendicularly, thereby can set up under the crossed two-way lane 103 of wearing, can regard as the small-size vehicle passageway, in order to realize three-dimensional traffic, two-way lane 103 both sides are piping lane 112, under the condition that does not influence, do not disturb original place table structure basis, utilize underground space resources such as road and place greenery patches, construct three-dimensional cross road network, reduce road area, furthest's improvement afforestation land.

According to the utility model discloses a three-dimensional construction method, from the good box culvert of shaping dig perpendicularly downwards, remove the parallel hyoplastron of bottom plate, parallel jacking under the box culvert bottom plate, when the construction of upper box culvert, at the box culvert periphery and the pre-buried owner muscle steel sheet of support column bottom, during the construction with pre-buried owner muscle steel sheet and the box culvert owner muscle welding of lower part become physically can, make the box culvert on upper portion and the box culvert fixed connection of lower part.

According to the utility model discloses a perpendicular intersection construction methods, two perpendicular box culverts intersect in same planes, wherein the intermediate hole of box culverts passes from two crossing plane belows of box culvert, the section that collapses in the box culvert that has already been built promptly, two box culverts face department of intersecting is built with down dig ramp 114, that is to say, the vehicle is connected through the slope from the place that the lower lane went into the upper lane, the vehicle is connected through the slope from the place that the upper lane went into the lower lane, form three-dimensional traffic, have multi-level characteristics, need not occupy land resource, land zero cost.

The application range of the shield equipment is as follows: 1. underground pedestrian passageway, 2 underground parking garage, 3, one-way three-dimensional traffic, 4, piping lane, 5, civil air defense engineering, 6, culvert, cistern etc. 7, the translation of old building.

The beneficial effect that this application realized is as follows:

The above specification describes embodiments of the present invention, but the above description is only the preferred embodiment of the present invention, and can not be considered as limiting the scope of the present invention, and all the equivalent changes and improvements made in the application scope of the present invention should be included in the scope of the present invention.

Claims

1, A large-span multi-structure back-pushing type shield device, which is characterized in that the device comprises a left shield body, a right shield body and a widening shield body detachably connected between the left shield body and the right shield body,

the left shield body, the right shield body and the widening shield body respectively comprise a shield chamber, a cutting edge angle, a jacking mechanism, a tongue plate and a tongue plate telescopic mechanism,

the knife edge is connected to the end of the shield chamber, and the tongue plate is connected to the end of the shield chamber far away from the knife edge in a sliding manner through the tongue plate telescopic mechanism;

the jacking mechanism is arranged in parallel to the advancing direction of the shield equipment and is connected with the shield room.

2. The large-span multi-structure back-pushing type shield equipment according to claim 1, wherein the shield chamber of the left shield body comprises a left top plate, a left bottom plate and a left vertical plate, the left top plate and the left bottom plate are arranged in parallel and spaced apart, two ends of the left vertical plate are respectively connected to the ends of the left top plate and the left bottom plate, and ends of the left top plate and the left bottom plate far away from the left vertical plate are connected to the widened shield body;

the shield room of the right shield body comprises a right top plate, a right bottom plate and a right vertical plate, the right top plate and the right bottom plate are arranged in parallel at intervals, two ends of the right vertical plate are respectively connected to the end parts of the right top plate and the right bottom plate, and the ends of the right top plate and the right bottom plate, which are far away from the right vertical plate, are connected with the widened shield body.

3. The large-span multi-structure back-pushing shield installation of claim 2, wherein said shield chamber of said widened shield body comprises an upper extension plate and a lower extension plate, said upper extension plate and said lower extension plate are both horizontal plates, said upper extension plate has end detachably connected to said left top plate, another end detachably connected to said right top plate, said lower extension plate has end detachably connected to said left bottom plate, another end detachably connected to said right bottom plate.

4. The large-span multi-structure back-pushing shield equipment of claim 3, wherein a support cylinder is connected between said left top plate and said left bottom plate;

a supporting cylinder is connected between the right top plate and the right bottom plate;

and a supporting cylinder is connected between the upper extending plate and the lower extending plate.

5. The large-span multi-structure back-pushing type shield equipment according to claim 3, wherein the left top plate, the left bottom plate, the left vertical plate, the right top plate, the right bottom plate, the right vertical plate, the upper extension plate and the lower extension plate each comprise an inner layer plate and an outer layer plate, the inner layer plate and the outer layer plate are arranged at intervals, and the inner layer plate and the outer layer plate are fixedly connected with the end faces of the blade corners.

6. The large-span multi-structure back-pushing shield apparatus of claim 5, wherein said jacking mechanism is a jacking cylinder disposed between said inner deck and said outer deck.

7. The large-span multi-structure back-pushing shield equipment of claim 6, wherein a back-pushing plate is connected to the jacking cylinder, the back-pushing plate is arranged at ends of the inner plate and the outer plate far away from the knife-edge, and the back-pushing plate is arranged at the inner side of the tongue plate.

8. The large-span multi-structure back-pushing type shield equipment according to claim 7, wherein the back pushing plate is provided with an observation hole, a steel bar hanging hole and a high-pressure concrete injection hole.

9. The large-span multi-structure back-pushing shield apparatus of claim 5, wherein said tongue plate and said tongue plate retraction mechanism are disposed between said inner plate and said outer plate.

10. The large-span multi-structure back-pushing shield apparatus of claim 1, wherein said knife-edge includes a sharp portion, said knife-edge being angularly connected with said shield room tiltable .