CN109441469B - Self-propelled shield tunneling machine complete equipment fitting free section and tunnel construction method - Google Patents
Self-propelled shield tunneling machine complete equipment fitting free section and tunnel construction method Download PDFInfo
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- CN109441469B CN109441469B CN201811544941.6A CN201811544941A CN109441469B CN 109441469 B CN109441469 B CN 109441469B CN 201811544941 A CN201811544941 A CN 201811544941A CN 109441469 B CN109441469 B CN 109441469B
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- 238000010276 construction Methods 0.000 title claims abstract description 48
- 230000005641 tunneling Effects 0.000 title claims abstract description 39
- 239000002689 soil Substances 0.000 claims abstract description 86
- 238000009412 basement excavation Methods 0.000 claims abstract description 31
- 239000002893 slag Substances 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 116
- 238000007599 discharging Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000003607 modifier Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002221 olecranon process Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The application discloses self-propelled shield constructs machine complete sets of free section of fit compares with prior art, includes: the inner supporting component is arranged at the front end of the shield tunneling machine main body; the outer support module is arranged on the inner support assembly, is used for excavating the soil body of the face, is used for conveying slag soil, and is used for fitting a free section and supporting the soil body; the steel arch frame assembling machine for the vertical arch frame is an anchor rod drilling machine for drilling anchor rods, a spraying and mixing bridge for spraying and mixing, lining operation equipment for lining and maintenance operation and the like. Compared with the prior art, the complete equipment provided by the application has the advantages that the outer support module can fit the free section, the equipment recycling rate is high, and the adaptability is wide; collect operation in an organic wholes such as excavation, slag tap, lining, maintenance, can effectively reduce construction cost, improve construction safety and efficiency. The application also provides a tunnel construction method applied to the equipment, and the tunnel construction method has the beneficial effects.
Description
Technical Field
The application relates to the technical field of tunnel construction equipment, in particular to self-propelled shield tunneling machine complete equipment fitting a free section, and further relates to a tunnel construction method.
Background
At present, in the field of tunnel construction, tunneling of a tunnel by using a shield tunneling machine is an important step. The common tunnel construction method mainly comprises the following steps: mine construction and common shield construction (such as circular shield, rectangular shield, horseshoe shield, etc.). The mine method construction machinery is simple, the construction speed is low, the construction operation environment is poor, and personnel safety accidents are easily caused by tunnel collapse. The common shield method construction generally needs prefabricated segment lining to form lining rings, provides propulsive support reaction force for the shield machine, increases construction cost due to segment lining, and has poor tunnel forming quality due to the fact that slurry leakage, water leakage and the like exist in tunnels due to segment sealing and segment assembling quality factors.
However, the full-section cutterhead excavation construction of the common shield method is generally single excavation section, and when the excavation section is changed, the shield machine is redesigned and manufactured, and the repeated utilization rate of the shield machine is poor; when obstacles such as obstacles appear in front of the palm face, the obstacles are difficult to treat; the shield machine has complex equipment and high equipment cost; when the shield machine is driven, the modifier such as foam, bentonite and the like is required to be injected into the excavated dregs to improve the dregs, and the discharged dregs carry the modifier and are easy to pollute the environment.
Therefore, the self-propelled shield tunneling machine complete equipment fitting the free section can fit various free sections, improve the repeated utilization rate of the equipment, increase the adaptability of the equipment, reduce the construction cost and effectively improve the construction safety and the construction efficiency.
Disclosure of Invention
In order to solve the technical problem, the application provides self-propelled shield tunneling machine complete equipment fitting free sections, which can fit various free sections, adapt to various excavation sections, has high equipment reuse rate and wide adaptability, remarkably improves the equipment reuse rate, increases the equipment adaptability, reduces construction cost, and improves construction efficiency and construction safety. The application also provides a tunnel construction method which has the beneficial effects.
The technical scheme provided by the application is as follows:
a self-propelled shield machine kit fitting a free section, comprising: the inner supporting component is arranged at the front end of the shield tunneling machine main body; the excavation mechanism is arranged on the inner support assembly and used for excavating soil body of the face; the slag discharging mechanism is arranged on the inner supporting component and used for conveying slag soil; the outer support module is arranged on the inner support assembly and used for fitting the free section and supporting the soil body.
Further, in a preferred form of the invention, the outer support module comprises: the telescopic top slotting tool mechanism is arranged on the upper arc section of the inner supporting component; the telescopic side slotting tool mechanism is arranged at the side arc section of the inner supporting component; the telescopic bottom slotting tool mechanism is arranged at the lower arc section of the inner supporting component.
Further, the outer support module further comprises a telescopic middle slotting tool mechanism horizontally arranged in the middle of the inner support assembly;
further, the top slotting tool mechanism, the side slotting tool mechanism and the bottom slotting tool mechanism are distributed according to an arc-shaped curve.
Further, in a preferred form of the invention, the top slotting tool mechanism comprises: the top slotting tool is used for inserting soil to be excavated; the top pushing oil cylinder is arranged on the inner supporting component and used for controlling the front and back extension of the top slotting tool; the side slotting tool mechanism comprises: the side slotting tool is used for inserting soil to be excavated; the side propulsion oil cylinder is arranged on the inner support assembly and used for controlling the front-back expansion of the side slotting tool; the bottom slotting tool mechanism comprises: the bottom slotting tool is used for inserting soil to be excavated; the bottom pushing oil cylinder is arranged on the inner supporting component and used for controlling the front-back extension of the bottom slotting tool; the middle slotting tool mechanism includes: the middle slotting tool is used for being inserted into soil to be excavated; the middle pushing oil cylinder is arranged on the inner supporting component and used for controlling the front and back extension of the middle slotting tool.
Further, in a preferred form of the invention, the top blades are of uniform length and the bottom blades are of uniform length; the length of the top slotting tool is longer than that of the bottom slotting tool; the length of the side slotting tool is between the length of the top slotting tool and the length of the bottom slotting tool; the length of the side slotting tool decreases from one side of the top slotting tool mechanism to one side of the bottom slotting tool mechanism; the lengths of the middle slotting tools are consistent.
Further, in a preferred mode of the present invention, the self-propelled shield tunneling machine kit fitting the free section further includes: the soil retaining mechanism is arranged on the inner supporting component; the soil blocking mechanism includes: a soil retaining plate for blocking collapse of soft soil; and the telescopic mechanism is used for pushing the retaining plate.
Further, in a preferred mode of the present invention, the self-propelled shield tunneling machine kit fitting the free section further includes: the tail shield is arranged at the rear end of the inner supporting component and used for supporting soil body, and the tail shield is connected with the inner supporting component through the telescopic oil cylinder.
Further, in a preferred mode of the present invention, the self-propelled shield tunneling machine kit fitting the free section further includes: the steel arch centering assembly machine is arranged on the tail shield and used for building an arch centering.
Further, in a preferred mode of the present invention, the self-propelled shield tunneling machine kit fitting the free section further includes: the anchor rod drilling machine is arranged at the rear end of the tail shield and used for drilling anchor rods.
Further, in a preferred mode of the present invention, the self-propelled shield tunneling machine kit fitting the free section further includes: the spraying and mixing bridge is arranged at the rear end of the jumbolter and used for spraying and mixing.
Further, in a preferred mode of the present invention, the self-propelled shield tunneling machine kit fitting the free section further includes: lining operation equipment arranged at the rear end of the spray mixing bridge.
In addition, the application also provides a method for carrying out tunnel construction by using the shield tunneling machine, which specifically comprises the following steps:
step 1: and (3) preparation of construction: assembling and debugging a shield machine in an originating well to enable the shield machine to have originating conditions;
step 2: pushing out the top, side and middle slotting tool mechanisms: the oil cylinder stretches out to push out the top slotting tool, the side slotting tool and the middle slotting tool mechanism in sequence to form a supporting front eave;
step 3: extending the soil blocking mechanism: excavating soil in front of the soil retaining mechanism, and extending out of the baffle mechanism;
step 4: digging: the excavating mechanism excavates soil, and the excavated soil is transported out through the slag discharging mechanism;
step 5: pushing out the bottom slotting tool: pushing out a bottom slotting tool after excavation is completed;
step 6: the inner support assembly follows: the oil cylinders on all the slotting tools retract synchronously, the friction force of the slotting tool outer shell and the soil layer is used as a supporting reaction force, and the friction force between the slotting tools and the soil layer is larger than the friction force between the slotting tools and the inner supporting component because the friction coefficient of steel to soil is larger than the friction coefficient of steel to steel, so that the inner supporting component is pulled to move forward by a stroke distance, and the shield tunneling machine is driven to move forward;
step 7: vertical arch, spray mixing and secondary lining: during soil excavation, the steel arch frame assembler is used for erecting an arch, the anchor rod drilling machine is used for drilling anchor rods, spraying concrete of a mixed bridge is used for spraying concrete, primary support is formed on the section of a tunnel, and lining operation equipment is used for carrying out secondary lining at a certain distance from a host machine;
step 8: and (3) tunnel forming: performing cyclic operation according to the steps S1 to S7 until tunneling is completed, and forming a tunnel;
step 9: receiving a shield machine: and the receiving well is not required to be arranged, and the receiving well is detached at a preset position, so that the in-hole detachment and rollback construction is realized.
Compared with the prior art, the self-propelled shield tunneling machine complete equipment fitting the free section comprises the following components: the inner supporting component is arranged at the front end of the shield tunneling machine main body, and is provided with an excavating mechanism for excavating the soil body of the tunnel face, a slag discharging mechanism for conveying slag soil and an outer supporting module for inserting the soil body to be excavated and supporting the soil body of the excavated area. The outer supporting module can be used for fitting a free section and supporting soil, can fit various sections for different excavation sections, and has the advantages of high equipment recycling rate and wide adaptability; in addition, through the setting of outer support module in this application, can support the open outer face of advance, make things convenient for excavation mechanism to excavate the soil body of treating excavation, improved construction safety and efficiency of construction to a great extent, reduced construction cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall schematic diagram of a self-propelled shield machine complete equipment fitting a free section provided by an embodiment of the invention;
FIG. 2 is a detailed schematic diagram of a top or bottom or side or middle knife mechanism provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of the assembly positions of a parallel excavation face slotting tool mechanism and a soil retaining mechanism provided by an embodiment of the present invention;
FIG. 4 is a schematic view of the top, side, and middle slotting tool mechanisms according to an embodiment of the present invention;
FIG. 5 is a schematic view showing the extension of a retaining mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic view of an extended front view of a retaining mechanism according to an embodiment of the present invention;
FIG. 7 is a schematic view of excavated soil and slag removal provided by an embodiment of the present invention;
FIG. 8 is a schematic view of a bottom pocket tool mechanism according to an embodiment of the present invention;
FIG. 9 is a schematic view illustrating the forward movement of a host with the following inner support assembly according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a vertical arch, spray mixing and two lining process according to an embodiment of the present invention.
Reference numerals illustrate: an outer support module 1; a top slotting tool mechanism 11; a side slotting tool mechanism 12; a bottom slotting tool mechanism 13; a middle slotting tool mechanism 14; a thrust cylinder 15; a top slotting tool 111; a top push ram 112; a side slotting tool 121; a side thrust cylinder 122; a bottom slotting tool 131; a bottom propulsion cylinder 132; a middle slotting tool 141; a middle propulsion cylinder 142; an inner support assembly 2; an excavating mechanism 3; a slag discharging mechanism 4; a soil retaining mechanism 5; tail shield 6; a telescopic cylinder 7; a steel arch assembler 8; a jumbolter 9; a spray mixing bridge 10; lining work equipment 16.
Detailed Description
In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of a plurality of "a number" is two or more, unless explicitly defined otherwise.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are therefore not intended to limit the scope of the invention, which is defined by the claims, but are not to be limited to the specific details disclosed herein. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the present application to which they may be applied, but rather to modify or adapt the relative relationship without materially altering the technical context.
As shown in fig. 1 to 10, an embodiment of the present invention provides a self-propelled shield tunneling machine complete apparatus fitting a free section, including: the inner support component 2 is arranged at the front end of the shield tunneling machine main body; the excavation mechanism 3 is arranged on the inner support assembly 2 and used for excavating soil body of the face; the slag discharging mechanism 4 is arranged on the inner supporting component 2 and is used for conveying slag soil; the outer support module 1 is arranged on the inner support assembly 2 and used for fitting a free section and supporting soil.
Compared with the prior art, the self-propelled shield tunneling machine complete equipment fitting the free section, which is provided by the embodiment of the invention, comprises: the inner support assembly 2 is arranged at the front end of the shield tunneling machine body, and the inner support assembly 2 is provided with an excavating mechanism 3 for excavating the soil body of the tunnel face, a slag discharging mechanism 4 for conveying slag soil and an outer support module 1 for inserting the soil body to be excavated and supporting the soil body of the excavated area. The outer supporting module 1 can be used for fitting free sections and supporting soil bodies, can fit various sections for different excavation sections, and is high in equipment recycling rate and wide in adaptability; in addition, through the setting of outer support module 1 in this application, can support the open outer face of advance, make things convenient for excavation mechanism 3 to excavate the soil body of treating excavation, improved construction safety and efficiency of construction to a great extent.
Specifically, in the embodiment of the present invention, the outer support module 1 includes: the telescopic top slotting tool mechanism 11 is arranged on the upper arc section of the inner support assembly 2; a telescopic side slotting tool mechanism 12 arranged at the side arc section of the inner support component 2; and the telescopic bottom slotting tool mechanism 13 is arranged at the lower arc section of the inner support assembly 2.
More specifically, the outer support module 1 further includes a middle knife mechanism 14 horizontally disposed in the middle of the inner support assembly 2 and being retractable.
More specifically, the top cutter mechanism 11, the side cutter mechanism 12, and the bottom cutter mechanism 13 are arranged in a circular arc shape.
Wherein, outer support module 1 can be fitted out multiple section to different excavation section, and middle part slotting tool mechanism 14 becomes the plane form, cuts apart into two upper and lower excavation sections with the excavation section, both guaranteed construction safety and upper and lower section can excavate simultaneously, improves the efficiency of construction. When the excavation section is smaller, the middle slotting tool mechanism 14 can be omitted, 1 or more middle slotting tool mechanisms can be omitted or arranged according to the size of the tunnel section and the different stratum, the excavation section can be divided into 1, 2 or more upper and lower parts, and the slotting tool mechanism form and the combination form are not limited to the above.
The frame parts are formed by various curved beams and straight beam modules, and then are assembled into an inner supporting component structure, so that the supporting is provided for the slotting tool mechanism and other internal parts. The inner support component 2 is modularized, so that the change of the shape and the size of the excavated section is very easy, and only certain sizes of the inner support component 2 are changed, and other parts are assembled only by corresponding quantity change, so that new slotting cutter shields with different section sizes and forms can be obtained, and the aim of multiple purposes of one machine is fulfilled.
The excavating mechanism is used for excavating face soil, adopts different forms of excavating mechanisms such as a backhoe bucket, a cutting tooth, a olecranon shovel and the like aiming at different geology, and can be provided with a plurality of excavating mechanisms according to the requirements of construction speed and the size of an excavating section; an upper excavation mechanism is generally arranged above the middle slotting tool mechanism 14 and is used for excavating soil at the upper part of the section; a lower excavation mechanism is arranged below the middle slotting tool mechanism 14 and is used for excavating soil at the lower part of the section.
The slag discharging mechanism 4 is used for conveying slag, and different forms of slag discharging mechanisms 4 or modes can be adopted according to requirements, such as belt conveyor slag discharging, screw conveyor slag discharging, scraper conveyor slag discharging and the like, and the forms are not limited.
Specifically, in the present embodiment, the thrust cylinders 15 include a top thrust cylinder 112, a side thrust cylinder 122, a bottom thrust cylinder 132, and a middle thrust cylinder 142.
Specifically, in the embodiment of the present invention, the top slotting tool mechanism 11 comprises: a top slotting tool 111 for inserting the soil to be excavated; a top pushing cylinder 112 provided on the inner support assembly 2 for controlling the front-back extension of the top slotting tool 111; the side pocket tool mechanism 12 includes: a side slotting tool 121 for inserting soil to be excavated; a side pushing cylinder 122 provided on the inner support assembly 2 for controlling the front-rear extension of the side slotting tool 121; the bottom slotting tool mechanism 13 comprises: a bottom slotting tool 131 for inserting soil to be excavated; the bottom pushing cylinder 132 is arranged on the inner supporting component 2 and used for controlling the front-back extension of the bottom slotting tool 131; the middle slotting tool mechanism 14 comprises: a middle slotting tool 141 for inserting soil to be excavated; and a middle pushing cylinder 142 which is arranged on the inner support assembly 2 and used for controlling the front and back extension of the middle slotting tool.
More specifically, in the embodiment of the present invention, the ends of the top, side, bottom and middle blades 111, 121, 131, 141 remote from the inner support assembly 2 are wedge-shaped. The wedge-shaped structure of the slotting tool can effectively help the slotting tool to be better inserted into the soil body to be excavated, and the power consumption of the oil pump is reduced.
Specifically, in the embodiment of the present invention, the lengths of the blades of the top blade mechanism 11 are identical, and the lengths of the blades of the bottom blade mechanism 13 are identical; the slotting tool length of the top slotting tool mechanism 11 is longer than that of the bottom slotting tool mechanism 13; the slotting tool length of the side slotting tool mechanism 12 is between the slotting tool lengths of the top slotting tool mechanism 11 and the bottom slotting tool mechanism 13; the slotting tool length of the side slotting tool mechanism 12 decreases along one side of the top slotting tool mechanism 11 to one side of the bottom slotting tool mechanism 13; the central slotting tool mechanism 14 has a consistent slotting tool length.
More specifically, the slotting tool is in a long strip shape, the friction force between the slotting tool and the soil layer is larger than the friction force between the slotting tool and the inner supporting component, the shield machine can automatically propel without providing a supporting reaction force from the outside, and a lining ring which is required to provide the supporting reaction force for general shield propulsion is omitted.
Specifically, in the embodiment of the invention, the self-propelled shield tunneling machine complete equipment fitting the free section further comprises: a soil blocking mechanism 5 provided on the inner support assembly 2; the soil blocking mechanism 5 includes: a soil retaining plate for blocking collapse of soft soil; and the telescopic mechanism is used for pushing the retaining plate.
Specifically, in the embodiment of the invention, the self-propelled shield tunneling machine complete equipment fitting the free section further comprises: the tail shield 6 is arranged at the rear end of the inner support assembly 2 and used for supporting soil, and the tail shield 6 is connected with the inner support assembly 2 through the telescopic oil cylinder 7.
Specifically, in the embodiment of the invention, the self-propelled shield tunneling machine complete equipment fitting the free section further comprises: and the steel arch centering assembly machine 8 is arranged on the tail shield 6 and used for building an arch centering.
Specifically, in the embodiment of the invention, the self-propelled shield tunneling machine complete equipment fitting the free section further comprises: and the roof bolter 9 is arranged at the rear end of the tail shield 6 and is used for bolting.
Specifically, in the embodiment of the invention, the self-propelled shield tunneling machine complete equipment fitting the free section further comprises: and a spraying and mixing bridge 10 arranged at the rear end of the jumbolter 9 and used for spraying and mixing.
Specifically, in the embodiment of the invention, the self-propelled shield tunneling machine complete equipment fitting the free section further comprises: lining working equipment 16 is provided at the rear end of the spray and mix bridge 10.
In addition, the embodiment of the invention also provides a method for carrying out tunnel construction by using the shield tunneling machine, which specifically comprises the following steps:
step 1: and (3) preparation of construction: assembling and debugging a shield machine in an originating well to enable the shield machine to have originating conditions;
step 2: pushing out the top, side and middle slotting tool mechanisms: the oil cylinder stretches out to push out the top slotting tool, the side slotting tool and the middle slotting tool mechanism in sequence to form a supporting front eave;
step 3: extending the soil blocking mechanism: excavating soil in front of the soil retaining mechanism, and extending out of the baffle mechanism;
step 4: digging: the excavating mechanism excavates soil, and the excavated soil is transported out through the slag discharging mechanism 4;
step 5: pushing out the bottom slotting tool: pushing out a bottom slotting tool after excavation is completed;
step 6: the inner support assembly follows: the oil cylinders on all the slotting tools retract synchronously, the friction force of the slotting tool outer shell and the soil layer is used as a supporting reaction force, and the friction force between the slotting tools and the soil layer is larger than the friction force between the slotting tools and the inner supporting component because the friction coefficient of steel to soil is larger than the friction coefficient of steel to steel, so that the inner supporting component is pulled to move forward by a stroke distance, and the shield tunneling machine is driven to move forward;
step 7: vertical arch, spray mixing and secondary lining: during soil excavation, the steel arch frame assembler is used for erecting an arch, the anchor rod drilling machine is used for drilling anchor rods, spraying concrete of a mixed bridge is used for spraying concrete, primary support is formed on the section of a tunnel, and lining operation equipment is used for carrying out secondary lining at a certain distance from a host machine;
step 8: and (3) tunnel forming: and (5) circularly operating according to the steps S1 to S7 until tunneling is completed, and forming a tunnel.
Step 9: receiving a shield machine: and the receiving well is not required to be arranged, and the receiving well is detached at a preset position, so that the in-hole detachment and rollback construction is realized.
In summary, the self-propelled shield tunneling machine complete equipment for fitting the free section, which is related to the embodiment of the invention, is provided with a plurality of slotting mechanisms to realize fitting the free section, can adapt to any section by simply modifying the inner supporting component, can be round, can also be horseshoe-shaped, square and other various sections, integrates the operations of excavation, slag discharge, lining, maintenance and the like, and has high equipment reuse rate and wide adaptability; the advanced support of the excavation face can be realized through the extension of the slotting tool, the mechanical excavation and slag discharge are realized, the construction safety is effectively improved, and the construction efficiency is improved; the friction force between the slotting tool and the soil layer is larger than the friction force between the slotting tool and the inner supporting component, so that the shield machine can automatically propel without providing a supporting reaction force from the outside, and a lining ring which is necessary to provide the supporting reaction force for general shield propulsion is omitted; the cast-in-situ mode replaces a segment lining mode, so that the construction cost is reduced, and the tunnel quality is improved; when in construction, no slag modifier is needed to be injected into the soil body, and no pollution is caused to the environment; the shield machine can be disassembled in situ to realize rollback construction without a receiving well during receiving. The embodiment of the invention also relates to a method for carrying out tunnel construction by using the shield tunneling machine, and the method has the same beneficial effects.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. Self-propelled shield machine complete equipment of fit free section, characterized by comprising: the inner supporting component is arranged at the front end of the shield tunneling machine main body; the excavation mechanism is arranged on the inner support assembly and used for excavating soil body of the face; the slag discharging mechanism is arranged on the inner supporting component and used for conveying slag soil; the outer support module is arranged on the inner support assembly and used for fitting the free section and supporting the soil body; the inner support assembly is formed by assembling frame components consisting of a plurality of curved beams and straight beams, and the outer support modules can be fitted with different sections by changing the sizes of certain beams; the outer support module includes: the telescopic top slotting tool mechanism is arranged on the upper arc section of the inner supporting component; the telescopic side slotting tool mechanism is arranged on the side arc section of the inner support assembly; the telescopic bottom slotting tool mechanism is arranged at the lower arc section of the inner supporting component; the horizontal setting in interior supporting component middle part, and telescopic middle part slotting tool mechanism.
2. The self-propelled shield machine kit for fitting a free section of claim 1, wherein the top slotting tool mechanism comprises: the top slotting tool is used for inserting soil to be excavated; the top pushing oil cylinder is arranged on the inner supporting component and used for controlling the front-back expansion of the top slotting tool; the side slotting tool mechanism comprises: the side slotting tool is used for inserting soil to be excavated; the side propulsion oil cylinder is arranged on the inner support assembly and used for controlling the front-back expansion of the side slotting tool; the bottom slotting tool mechanism comprises: the bottom slotting tool is used for inserting soil to be excavated; the bottom pushing oil cylinder is arranged on the inner supporting component and used for controlling the front-back expansion of the bottom slotting tool; the middle slotting tool mechanism comprises: the middle slotting tool is used for being inserted into soil to be excavated; the middle pushing oil cylinder is arranged on the inner supporting component and used for controlling the front-back expansion of the middle slotting tool.
3. The self-propelled shield tunneling machine kit for fitting a free section according to claim 2, wherein the top blades are of uniform length and the bottom blades are of uniform length; the length of the top slotting tool is greater than the length of the bottom slotting tool; the length of the side slotting tool is between the length of the top slotting tool and the length of the bottom slotting tool; the length of the side slotting tool decreases from one side of the top slotting tool mechanism to one side of the bottom slotting tool mechanism; the lengths of the middle slotting tools are consistent.
4. The free-section fitting self-propelled shield machine kit of claim 3, further comprising: a soil retaining mechanism disposed on the inner support assembly; the soil blocking mechanism includes: a soil retaining plate for blocking collapse of soft soil; and the telescopic mechanism is used for pushing the retaining plate.
5. The free-section fitting self-propelled shield machine kit of claim 4, further comprising: the tail shield is arranged at the rear end of the inner supporting component and used for supporting soil body, and the tail shield is connected with the inner supporting component through a telescopic oil cylinder.
6. The free-section fitting self-propelled shield machine kit of claim 5, further comprising: the steel arch centering assembly machine is arranged on the tail shield and used for building an arch centering.
7. The free-section fitting self-propelled shield machine kit of claim 6, further comprising: the anchor rod drilling machine is arranged at the rear end of the tail shield and used for drilling anchor rods; the spraying and mixing bridge is arranged at the rear end of the jumbolter and used for spraying and mixing; and lining operation equipment arranged at the rear end of the spraying and mixing bridge.
8. A tunnel construction method, characterized in that the construction is performed by using the self-propelled shield machine complete equipment for fitting free sections according to any one of claims 1 to 7, comprising the following steps:
s1: assembling and debugging the shield machine to enable the shield machine to have an originating condition;
s2: pushing out the top, side and middle slotting tool mechanisms: the oil cylinder stretches out to push out the top slotting tool, the side slotting tool and the middle slotting tool mechanism in sequence to form a supporting front eave;
s3: extending out of the soil retaining mechanism, excavating soil in front of the soil retaining mechanism, and extending out of the baffle mechanism;
s4: the excavating mechanism excavates soil, and the excavated soil is transported out through the slag discharging mechanism;
s5: pushing out a bottom slotting tool after excavation is completed;
s6: the inner support assembly follows: the oil cylinders on the slotting tool retract synchronously, and the inner supporting component is pulled to move forward by a stroke distance by taking the friction force of the slotting tool shell and the soil layer as a supporting counterforce, so that the shield tunneling machine is driven to move forward;
s7: vertical arch, spray mixing and secondary lining: during soil excavation, the steel arch frame assembler is used for erecting an arch, the anchor rod drilling machine is used for drilling anchor rods, spraying concrete of a mixed bridge is used for spraying concrete, primary support is formed on the section of a tunnel, and lining operation equipment is used for carrying out secondary lining at a certain distance from a host machine;
s8: and (3) tunnel forming: performing cyclic operation according to the steps S1 to S7 until tunneling is completed, and forming a tunnel;
s9: receiving a shield machine: disassembling at a preset position, and disassembling and backing construction in a hole.
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| CN201811544941.6A CN109441469B (en) | 2018-12-17 | 2018-12-17 | Self-propelled shield tunneling machine complete equipment fitting free section and tunnel construction method |
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| CN201811544941.6A CN109441469B (en) | 2018-12-17 | 2018-12-17 | Self-propelled shield tunneling machine complete equipment fitting free section and tunnel construction method |
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| CN109441469B true CN109441469B (en) | 2024-02-13 |
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| CN111472797B (en) * | 2020-04-16 | 2021-09-28 | 中国水利水电第十工程局有限公司 | Implementation method for detaching TBM in hole |
| CN111852487A (en) * | 2020-06-09 | 2020-10-30 | 中铁工程装备集团有限公司 | Stratum instability prevention type tunneling device and construction method thereof |
| CN114320393A (en) * | 2022-01-05 | 2022-04-12 | 中铁工程装备集团有限公司 | Supporting structure, tunneling system and tunneling method |
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