CN108756918B - Pipe-free sheet assembling device and shield tunneling machine - Google Patents
Pipe-free sheet assembling device and shield tunneling machine Download PDFInfo
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- CN108756918B CN108756918B CN201810796696.1A CN201810796696A CN108756918B CN 108756918 B CN108756918 B CN 108756918B CN 201810796696 A CN201810796696 A CN 201810796696A CN 108756918 B CN108756918 B CN 108756918B
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- 230000005641 tunneling Effects 0.000 title claims abstract description 52
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000011435 rock Substances 0.000 abstract description 22
- 238000010276 construction Methods 0.000 abstract description 20
- 239000002689 soil Substances 0.000 abstract description 11
- 230000000977 initiatory effect Effects 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 6
- 230000007704 transition Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
- E21D9/0873—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines the shield being provided with devices for lining the tunnel, e.g. shuttering
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a pipe-free assembling device which comprises a counterforce frame and at least one radial tensioning ring, wherein the end face of the counterforce frame is used for being connected with a thrust cylinder of a shield machine, the radial tensioning ring is used for tensioning a hole wall, the radial tensioning ring is retractable, and the counterforce frame is connected with the tensioning ring through a force transmission ring. The pipe-sheet-free assembling device can ensure that the shield machine does not need to assemble pipe sheets when in hard rock stratum construction. The invention also discloses a shield tunneling machine comprising the pipe sheet-free spliced pipe sheet. The shield tunneling machine can be used for constructing soft soil stratum and hard rock stratum, has a wide geological application range, reduces construction cost, reduces shield initiation preparation work and time, and improves tunneling speed.
Description
Technical Field
The invention relates to the technical field of tunneling devices, in particular to a pipe-free assembling device. In addition, the invention also relates to a shield tunneling machine comprising the pipe-sheet-free assembling device.
Background
The shield tunneling machine is used as a special engineering machine for tunneling, and is widely applied to tunnel engineering of subways, railways, highways, municipal administration, hydropower and the like.
In the shield tunneling machine in the prior art, the advancing or stepping counterforce is provided for the host machine mainly by constructing the shield of the tunnel while tunneling, namely assembling the duct pieces along the tunnel. Therefore, the shield tunneling machine is mainly applied to tunnel construction of soft soil strata such as clay or soft rock. For tunnel construction of a hard rock stratum, the tunnel wall has enough hardness and strength, so that the tunnel wall has better safety without assembling a segment for tunnel lining, and can provide counter force for advancing or stepping of a host, so that when the hard rock stratum is constructed, a shield machine is not usually adopted, but an open TBM is adopted for construction.
However, for tunnels with longer construction distances, the geology of the tunnel strata is often not single, and it is common for soft soil strata and hard rock strata to coexist. For tunnels with complicated geology of such strata, alternate construction of a shield machine and an open type TBM is required, which increases the work and time for preparation for initiation, severely restricts the tunneling speed, and increases the construction cost. If the existing shield machine is adopted for construction, the pipe piece is still assembled in the hard rock stratum section, so that waste of work, time and cost is caused, and if the pipe piece is not assembled, the counter force of host machine advancing or stepping cannot be provided.
In summary, how to provide a tubeless sheet assembling device capable of providing a host machine with a forward reaction force when a shield machine is constructed in a hard rock stratum is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention aims to provide a tubeless sheet splicing device which can provide a reaction force for tunneling of a shield machine constructed in a hard rock stratum.
The shield tunneling machine comprises the pipe-slice-free assembling device, can work in soft soil stratum and hard rock stratum, has a wide geological application range, reduces construction cost, reduces shield initiation preparation work and time, and improves tunneling speed.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a device is assembled to no pipe piece, includes that the terminal surface is used for the reaction frame that links to each other with shield constructs the propulsion hydro-cylinder of machine and at least one is used for propping up radial tensionable and retractable of hole wall and props the tight ring, the reaction frame with prop the tight ring and pass through the biography power ring and link to each other.
Preferably, each tightening ring comprises a plurality of splicing blocks used for splicing the tightening rings, and two adjacent splicing blocks are connected through a tightening oil cylinder.
Preferably, the number of the tightening rings is at least two, and all the tightening rings are axially connected and arranged side by side.
Preferably, all the tightening rings are connected through three tie rods which are axially parallel and circumferentially uniformly distributed.
Preferably, the splicing blocks of two adjacent tightening rings are circumferentially staggered by a preset angle.
Preferably, the tightening ring is connected with the force transmission ring through a clamping sleeve, one of the clamping sleeve and the tightening ring connected with the clamping sleeve is provided with a radial inward protruding limiting flange, the other one of the clamping sleeve and the tightening ring is provided with a limiting groove which is used for being matched with the limiting flange in a concave-convex mode to axially limit the tightening ring, and the matching length of the limiting flange and the limiting groove is larger than the telescopic length of the tightening ring.
Preferably, the reaction frame comprises a plurality of steel pipe sheets used for being spliced into the reaction frame, and two adjacent steel pipe sheets are detachably connected through a connecting piece.
Preferably, the force transmission ring comprises a plurality of arc segments used for being spliced into the force transmission ring, and adjacent arc segments are detachably connected.
Preferably, the reaction frame and the force transmission ring are detachably connected through a flange, and the force transmission ring and the clamping sleeve are detachably connected through bolts.
The shield machine comprises a shield machine body, and further comprises:
the segment splicing machine is movably arranged in the shield tunneling machine body;
the pipe-free piece assembling device is detachably arranged in the shield tunneling machine body and used for switching the pipe piece assembling machine according to the geological type of the excavated tunnel, and the pipe-free piece assembling device is any pipe-free piece assembling device.
When the pipe-free assembling device is used, the end face of the counterforce frame is connected with the pushing oil cylinder of the shield machine, the supporting ring is tensioned to support the wall of the tunnel during tunneling, the pushing force of the pushing oil cylinder directly acts on the counterforce frame, the counterforce frame is connected with the supporting ring through the force transmission ring, the force transmission ring transmits the pushing force acting on the counterforce frame to the supporting ring, and the supporting ring resists the pushing force by virtue of the friction force between the supporting ring and the wall of the tunnel to provide pushing counterforce for the pushing oil cylinder, so that the shield machine advances. The pipe-sheet-free assembling device can ensure that the shield machine does not need to assemble pipe sheets when in hard rock stratum construction.
The shield machine comprises a segment assembling machine and a tube-free segment assembling device, wherein when a soft soil stratum is constructed, the advancing pushing counter force of the shield machine can be provided for the shield machine through the tunnel segments assembled by the segment assembling machine, and when a hard rock stratum is constructed, the advancing pushing counter force of the shield machine is provided for the shield machine through the tube-free segment assembling device. Therefore, the shield tunneling machine can be used for constructing soft soil stratum and hard rock stratum, has a wide geological application range, reduces construction cost, reduces shield initiation preparation work and time, and improves tunneling speed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of an embodiment of a tubeless sheet splicing apparatus according to the present invention;
FIG. 2 is a right side view of an embodiment of the tubeless sheet splicing apparatus of the present invention;
FIG. 3 is a front view of an embodiment of a tubeless sheet splicing apparatus according to the present invention;
FIG. 4 is a left side view of an embodiment of the tubeless sheet splicing apparatus of the present invention;
FIG. 5 is a schematic diagram of the shield tunneling machine provided by the invention in a segment propulsion mode;
FIG. 6 is a schematic diagram of the shield tunneling machine provided by the invention when splicing the transition ring segments;
FIG. 7 is a schematic diagram of the shield tunneling machine provided by the invention in a tubeless sheet splicing mode;
FIG. 8 is a schematic diagram of the shield tunneling machine provided by the invention when the segment-free assembly device is disassembled and the transition ring segments are assembled;
fig. 9 is a schematic diagram of the shield tunneling machine provided by the invention in a segment-based propulsion mode.
Reference numerals in fig. 1 to 9 are as follows:
the device comprises a counterforce frame 1, steel pipe sheets 101, a connecting piece 102, a tightening ring 2, a splicing block 201, a tightening cylinder 202, a pull rod 203, a force transmission ring 3, a clamping sleeve 4, a cutterhead 5, a shield body 6, a pushing cylinder 7, a main drive 8, a joist 9, a pipe sheet splicing machine 10, a screw conveyor 11, a tunnel wall 12, a wall rear filling material 13, a tunnel pipe sheet 14, a pipe sheet block 1401, a rear matching system 15, a trailer roller 16, a transition ring pipe sheet 17, an anchor rod 18, a water ring until 19 and a pipe sheet-free splicing device 20.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a pipe-free assembling device which can provide a tunneling counter force for a shield tunneling machine in hard rock stratum construction. The shield tunneling machine comprises the pipe-slice-free assembling device, can work in soft soil stratum and hard rock stratum, has a wide geological application range, reduces construction cost, reduces shield initiation preparation work and time, and improves tunneling speed.
Please refer to fig. 1 to 9, which are drawings illustrating the description of the present application.
The application provides a device is assembled to no pipe piece, including the terminal surface be used for with shield constructs the thrust cylinder 7 that the quick-witted reaction frame 1 that links to each other and at least one be used for propping radial tensionable and retractable of wall 12 of cave and prop up the tight ring 2, reaction frame 1 and prop up the tight ring 2 and link to each other through passing force transmission ring 3.
It should be noted that, the device is assembled to no pipe piece that this application provided is mainly used shield constructs the machine, makes the shield construct the machine and need not to assemble the section of jurisdiction also can work when hard rock stratum construction. Therefore, the tubeless sheet assembling device comprises the supporting ring 2 for supporting the hole wall 12, and the pushing force of the pushing oil cylinder 7 on the reaction frame 1 is resisted by the friction force between the supporting ring 2 and the hole wall 12 during operation, so that the advancing pushing reaction force is provided for the shield tunneling machine, and the shield tunneling machine is advanced.
It can be understood that the tightening ring 2 can be radially tightened and retracted, and when the tightening ring 2 is tightened, the hole wall 12 is tightened to provide the advancing pushing reaction force for the shield machine; when the tightening ring 2 is retracted, a certain gap is reserved between the tightening ring and the hole wall 12, so that the pushing oil cylinder 7 can drive the pipe-free assembling device 20 to integrally move forwards when being retracted. The specific structure of the tightening ring 2 is not limited in this application, as long as the tightening ring 2 can radially tighten and tighten the hole wall 12 and is retractable. The tightening force of the tightening ring 2 needs to meet design indexes, and is determined according to practical application conditions. The tightening ring 2 needs to have sufficient strength and rigidity to resist its tightening force, avoid chipping of the tightening ring 2 at the time of tightening, and the like.
In addition, the width and number of the tightening rings 2 are not particularly limited, and the wider or more the number of the tightening rings 2, the larger the contact area between the tightening rings 2 and the hole wall 12 when the tightening rings are tightened, the larger the friction force between the tightening rings and the hole wall 12. Thus, the friction between the tightening ring 2 and the cavity wall 12 can be ensured by selecting a suitable width and number of the tightening rings 2.
It will be appreciated that the reaction frame 1 is adapted to be connected to the thrust cylinder 7 such that the thrust cylinder 7 acts directly on the reaction frame 1. In operation, the thrust cylinder 7 is propped against the reaction frame 1, and the reaction frame 1 provides a pushing reaction force for the thrust cylinder 7, so that the reaction frame 1 needs to have a larger density, a larger mass and a larger inertia so as to resist the pushing force of the thrust cylinder 7.
The reaction frame 1 and the tightening ring 2 are connected through the force transmission ring 3, and the force transmission ring 3 is used for transmitting the jacking force of the thrust cylinder 7 transmitted from the reaction frame 1 and the friction force between the tightening ring 2 and the hole wall 12.
It should be noted that, the force transmission ring 3 is set according to the axial width requirement, and the density of the force transmission ring 3 is smaller than that of the reaction frame 1, so when a certain axial distance is required between the reaction frame 1 and the tightening ring 2, the force transmission ring 3 can be adopted to compensate the axial distance for reducing the weight and saving the cost due to the larger density of the reaction frame 1.
To sum up, the device is assembled to no pipe piece that this application provided, during the use, link to each other the terminal surface of reaction frame 1 with shield constructs the propulsion hydro-cylinder 7 of machine, during the tunneling, make and prop up the tensioning ring 2 tensioning, prop up tight wall 12, the thrust of propulsion hydro-cylinder 7 directly acts on reaction frame 1, reaction frame 1 passes through the biography power ring 3 and links to each other with prop up the tensioning ring 2, the transmission power ring 3 will act on the thrust of reaction frame 1 and transmit to prop up the tensioning ring 2, prop up the friction force between tensioning ring 2 and the wall 12 and resist this thrust, provide the thrust counter force for propulsion hydro-cylinder 7, thereby make shield constructs the machine and advance. The pipe-sheet-free assembling device can ensure that the shield machine does not need to assemble pipe sheets when in hard rock stratum construction.
In view of the simplicity and ease of implementation of the specific structure of the tightening rings 2, in one embodiment, each tightening ring 2 includes a plurality of splice blocks 201 for splicing into the tightening ring 2, and adjacent two splice blocks 201 are connected by the tightening cylinder 202.
That is, the present embodiment drives the splice blocks 201 to move away from and toward each other by the expansion and contraction of the tightening cylinder 202, thereby achieving the expansion and retraction of the tightening ring 2. When the tightening cylinder 202 is extended, the splicing blocks 201 are far away from each other, the tightening ring 2 is radially opened, and when the tightening cylinder 202 is retracted, the splicing blocks 201 are close to each other, and the tightening ring 2 is radially retracted.
The specific number of the splicing blocks 201 is not limited in the present application, preferably, the number of the splicing blocks 201 is twelve, and twelve splicing blocks 201 form a tensionable and retractable tightening ring 2 under the connection of the tightening cylinder 202. When the splicing block is tightly supported, the outer side of the splicing block 201 is tightly attached to the hole wall 12, so that friction force is formed between the splicing block and the hole wall 12. Preferably, two hinge parts are provided on the inner side of each joint block 201, and each hinge part is used for hinging with two adjacent tightening cylinders 202. As a preferred solution, two parallel support plates are provided on the inner side of the splicing block 201, two pairs of first hinge holes are provided at corresponding positions of the two support plates, two ends of the tightening cylinder 202 are respectively provided with a second hinge hole, the second hinge holes are aligned with the pair of first hinge holes and then connected by a hinge shaft, and the hinge shaft is used for connecting the tightening cylinder 202 so as to fix the tightening cylinder 202 on the support plates.
In order to increase the friction between the tightening ring 2 and the wall 12, in a specific embodiment the number of tightening rings 2 is at least two, preferably three, all tightening rings 2 being axially connected and arranged side by side.
That is, the present embodiment increases the contact area between the tightening ring 2 and the hole wall 12 by increasing the number of tightening rings 2, thereby increasing the friction force therebetween.
It will be appreciated that when the three bracing rings 2 are arranged axially side by side, the bracing ring 2 axially outermost and close to the reaction frame 1 is connected to the force transmission ring 3.
Considering the axial fixing problem between all the tightening rings 2, in one particular embodiment, all the tightening rings 2 are connected by three tie rods 203 axially parallel and circumferentially distributed.
That is, the connecting holes are formed in the splicing blocks 201 corresponding to all the tightening rings 2, and the tie rods 203 axially connect all the tightening rings 2 after passing through all the connecting holes on the same axis. The three pull rods 203 are evenly distributed along the circumferential direction, so that all the tightening rings 2 are connected more firmly.
In addition, in order to make the overall circumferential stress of all the tightening rings 2 more uniform, in a specific embodiment, the splice blocks 201 of two adjacent tightening rings 2 are circumferentially staggered by a preset angle. In this way, the hinging parts of the adjacent splicing blocks 201 of the two adjacent tightening rings 2 and the tightening oil cylinder 202 are staggered by a preset angle in the circumferential direction, so that the stress of the whole tightening rings 2 in the circumferential direction is more intensive, and the circumferential friction force between the whole tightening rings 2 and the hole wall 12 is more uniform.
Considering the axial limiting problem of the tightening ring 2, on the basis of any one of the above embodiments, the tightening ring 2 is connected with the force transmission ring 3 through the clamping sleeve 4, one of the clamping sleeve 4 and the tightening ring 2 connected with the clamping sleeve 4 is provided with a radially inward convex limiting flange, the other is provided with a limiting groove which is used for being matched with the limiting flange in a concave-convex manner to axially limit the tightening ring 2, and the matching length of the limiting flange and the limiting groove is larger than the telescopic length of the tightening ring 2.
It can be appreciated that the ferrule 4 is used for axial limiting of the tightening ring 2, ensuring the axial position of the tightening ring 2 and avoiding axial movement of the tightening ring 2 relative to the force transmission ring 3.
As a preferable scheme, one side of the supporting ring 2 connected with the clamping sleeve 4 is provided with a radially inward convex limit flange, and one end of the clamping sleeve 4 is provided with a stop flange for being attached to one side of the limit flange away from the clamping sleeve 4 so as to stop the supporting ring 2 from moving axially and a limit groove for being in concave-convex fit with the limit flange.
In order to avoid stretching the tightening ring 2 from the retracted position to the tightening position, the tightening ring 2 is radially stretched to separate the limiting flange from the limiting groove, and the matching length of the limiting flange and the limiting groove in the application is greater than the radial telescopic length of the tightening ring 2, so that the limiting flange and the limiting groove are always matched and are not separated, and the tightening ring 2 is always axially limited.
For convenience of disassembly and assembly, in a specific embodiment, the reaction frame 1 includes a plurality of steel pipe pieces 101 for splicing into the reaction frame 1, and two adjacent steel pipe pieces 101 are detachably connected by a connecting piece 102.
Preferably, the reaction frame 1 is formed by splicing six steel pipe sheets 101, the outer ring of the steel pipe sheets 101 is arc-shaped, and the round outer wall of the reaction frame 1 is formed after the splicing is completed; the inner ring of the steel pipe sheet 101 is planar, and after the assembly is completed, a hexagonal inner wall of the reaction frame 1 is formed.
In view of the ease of removal and installation of the force transfer ring 3, in one embodiment the force transfer ring 3 comprises a plurality of segments for splicing into circular arc segments of the force transfer ring 3, adjacent circular arc segments being detachably connected.
Preferably, the force transmission ring 3 is formed by splicing four quarter circular arc segments, and the circular ring-shaped force transmission ring 3 is formed after the splicing is completed.
Considering the ease of installation and removal between the components of the tubeless sheet splicing apparatus, in one embodiment the reaction frame 1 and the force-transmitting ring 3 are detachably connected by flanges, and the force-transmitting ring 3 and the ferrule 4 are detachably connected by bolts.
In addition to the pipe-free splicing device, the invention also provides a shield tunneling machine, which comprises a shield tunneling machine body, and further comprises:
a segment erector 10 movably provided in the shield machine body;
the tubeless sheet assembling device 20 is detachably arranged in the shield tunneling machine body and used for switching the operation of the segment erector 10 according to the geological type of the excavated tunnel, and the tubeless sheet assembling device 20 is disclosed in any one of the embodiments. The shield machine further comprises a cutter head 5, a shield body 6, a propulsion cylinder 7, a main drive 8, a joist 9, a screw conveyor 11, a tunnel duct piece 14, a duct piece block 1401, a rear matching system 15, a trailer roller 16 and other structures, which refer to the prior art and are not described in detail herein.
That is, the present embodiment provides a shield machine including not only the segment erector 10, for which advancing pushing reaction force can be provided by the segment erector 10 when constructing a soft soil layer, but also the segment-free erector 20, for which advancing pushing reaction force is provided by the segment-free erector 20 when constructing a hard rock layer. Therefore, the shield tunneling machine can be used for constructing soft soil stratum and hard rock stratum, has a wide geological application range, reduces construction cost, reduces shield initiation preparation work and time, and improves tunneling speed.
The application further provides a construction method of the shield tunneling machine disclosed by the embodiment, and please refer to fig. 4 to 8, which are schematic diagrams of the shield tunneling machine in different construction states.
When working in hard rock formations, steps S11 to S15 are included.
Step S11: the tightening ring is tightened against the cavity wall 12 until the tightening force of the tightening ring reaches the design criteria.
Step S12: the piston rod of the thrust cylinder 7 is extended until its end abuts against the end face of the reaction frame.
Step S13: the cutter head 5 of the shield machine is rotated, the shield machine is started, the pressure of the thrust cylinder 7 is gradually increased until the expected tunneling pressure value is reached, the tunneling machine starts tunneling, and the machine is stopped after the tunneling distance of one stepping cycle is completed.
Step S14: retracting the tightening ring to retract the tightening ring.
Step S15: and (3) retracting a piston rod of the pushing oil cylinder 7, so that the pushing oil cylinder 7 drags the pipe-free assembling device 20 to advance a tunneling distance of one stepping cycle, and jumping to the step S11 to perform the next stepping cycle until the construction on the hard rock stratum is completed.
When the soft soil stratum is constructed, the tunnel duct piece 14 is assembled by the duct piece assembling machine 10, and a wall rear filling material 13 is injected into a gap between the back surface of the tunnel duct piece 14 and the tunnel wall to strengthen the tunnel duct piece 14, and the advancing pushing counterforce is provided for the shield machine by the tunnel duct piece 14.
When the shield tunneling machine is switched from the segment propulsion working mode to the segment-free propulsion working mode, the method comprises the steps S21 to S23.
Step S21: and splicing the transition ring duct piece 17 at the front end of the spliced tunnel duct piece 14 by adopting a duct piece splicing machine 10.
The transition ring segment 17 and the tunnel segment 14 are axially fixed by bolts.
Step S22: the transition ring segment 17 is reinforced.
Step S23: a tubeless sheet splicing device 20 is installed.
Specifically, the assembling device 20 without pipe sheets is installed in sequence according to the sequence of the reaction frame, the force transmission ring and the tightening ring, and a certain adjusting gap is reserved between the rear end of the tightening ring and the assembled transition ring pipe sheet 17 after the assembling is completed.
In order to prevent water seepage from the stratum, step S220 is included before step S22 is performed.
Step S220: a water stop ring 19 is additionally arranged at the front end of the transition ring segment 17.
Considering the specific manner of stiffening the transition ring segment 17, step S22 includes step S221.
Step S221: the gap between the transition ring segment 17 and the tunnel wall is filled with the wall post-filling material 13, and anchor rods 18 are driven into the tunnel wall surface, and the number of the anchor rods 18 is selected according to actual needs.
When the shield tunneling machine is switched from the hard rock stratum to the soft soil stratum, namely, the shield tunneling machine is switched from the pipe-sheet-free propelling operation mode to the pipe-sheet propelling operation mode, the method comprises the steps S31 to S33.
Step S31: the tubeless sheet splicing device 20 is removed in the order of the tension ring, the force transmission ring, and the reaction frame.
Step S32: the transition ring segment 17 is spliced by the segment splicer 10.
It should be noted that the number of the transition ring segments 17 is not limited in this application, and preferably, the number of the transition ring segments 17 is at least two.
Step S33: the transition ring segment 17 is reinforced.
It is understood that the reinforcement manner of the transition ring segment 17 in step S33 may be the reinforcement manner of step S221.
In this application, the terms "front end", "rear end", and the like indicate an azimuth or a relationship that corresponds to the direction of tunneling of the shield machine.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The pipe-sheet-free assembling device and the shield tunneling machine provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (9)
1. The pipe-sheet-free assembling device is characterized by comprising a counterforce frame (1) with an end face connected with a pushing cylinder (7) of a shield machine and at least one radially tensionable and retractable supporting ring (2) for supporting a hole wall (12), wherein the counterforce frame (1) is connected with the supporting ring (2) through a force transmission ring (3);
the support ring (2) with pass through cutting ferrule (4) with pass power ring (3) and be connected, cutting ferrule (4) with one of them of support ring (2) that cutting ferrule (4) are connected is equipped with radial inwards protruding limit flange, and the other is equipped with be used for with the unsmooth cooperation of limit flange is in order to right support ring (2) carries out the spacing recess of axial, limit flange with the cooperation length of spacing recess is greater than support the flexible length of ring (2).
2. The pipe-free assembling device according to claim 1, wherein each tightening ring (2) comprises a plurality of splicing blocks (201) for splicing the tightening rings (2), and two adjacent splicing blocks (201) are connected through tightening cylinders (202).
3. The tubeless sheet splicing apparatus according to claim 2, wherein the number of the tightening rings (2) is at least two, and all the tightening rings (2) are axially connected and arranged side by side.
4. A tubeless sheet splicing apparatus according to claim 3 wherein all the tension rings (2) are connected by three tie rods (203) axially parallel and circumferentially equispaced.
5. A tubeless sheet splicing device according to claim 3, wherein the splice blocks (201) of adjacent two of the tightening rings (2) are circumferentially offset from each other by a predetermined angle.
6. The tubeless sheet splicing device according to claim 1, wherein the reaction frame (1) comprises a plurality of steel pipe sheets (101) for splicing into the reaction frame (1), and two adjacent steel pipe sheets (101) are detachably connected through a connecting piece (102).
7. The pipe-free assembling device according to claim 1, wherein the force transfer ring (3) comprises a plurality of circular arc pipe pieces used for being assembled into the force transfer ring (3), and adjacent circular arc pipe pieces are detachably connected.
8. The tubeless sheet splicing device according to claim 1, characterized in that the reaction frame (1) and the force-transmitting ring (3) are detachably connected by means of a flange, and the force-transmitting ring (3) and the ferrule (4) are detachably connected by means of a bolt.
9. The utility model provides a shield constructs machine, includes shield constructs the machine body, its characterized in that still includes:
a segment erector (10) movably arranged in the shield tunneling machine body;
and the tubeless sheet assembling device (20) is detachably arranged in the shield tunneling machine body and used for switching the tunnel segment assembling machine (10) according to the geological type of the excavated tunnel, and the tubeless sheet assembling device (20) is as claimed in any one of claims 1-8.
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| CN201810796696.1A CN108756918B (en) | 2018-07-19 | 2018-07-19 | Pipe-free sheet assembling device and shield tunneling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810796696.1A CN108756918B (en) | 2018-07-19 | 2018-07-19 | Pipe-free sheet assembling device and shield tunneling machine |
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| CN108756918A CN108756918A (en) | 2018-11-06 |
| CN108756918B true CN108756918B (en) | 2024-02-13 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109751055B (en) * | 2018-12-28 | 2023-10-13 | 深圳市地铁集团有限公司 | TBM is with controlling means who prevents section of jurisdiction wrong platform and shield tail gesture |
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