CN112065492A - Synchronous operation rack for tunnel excavation construction and synchronous construction method - Google Patents
Synchronous operation rack for tunnel excavation construction and synchronous construction method Download PDFInfo
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- CN112065492A CN112065492A CN202010993643.6A CN202010993643A CN112065492A CN 112065492 A CN112065492 A CN 112065492A CN 202010993643 A CN202010993643 A CN 202010993643A CN 112065492 A CN112065492 A CN 112065492A
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- 238000010276 construction Methods 0.000 title claims abstract description 80
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 52
- 238000009412 basement excavation Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000010079 rubber tapping Methods 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 12
- 230000005641 tunneling Effects 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 81
- 238000009423 ventilation Methods 0.000 claims description 74
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 239000000725 suspension Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 238000011112 process operation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/36—Scaffolds for particular parts of buildings or buildings of particular shape, e.g. for stairs, cupolas, domes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/006—Scaffold with cantilevered sections, e.g. to accommodate overhangs or recesses in the facade
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- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ventilation (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a synchronous operation rack for tunnel excavation construction and a synchronous construction method. The construction method adopts a multi-procedure synchronous operation mode of tunnel tunneling, rail transportation, tunnel grouting, drain hole construction, slag tapping and the like. The invention realizes the partition synchronous operation of each process, solves the problem of mutual interference of the synchronous operation of each process, not only can greatly improve the tunnel construction efficiency, shorten the construction period and reduce the construction cost, but also can reduce the synchronous operation difficulty of each zone.
Description
Technical Field
The invention relates to a tunnel excavation construction technology, in particular to a synchronous operation rack for tunnel excavation construction and a synchronous construction method.
Background
With the increasing underground tunnel construction in the national engineering construction, the development machine is widely adopted in the tunnel construction due to the characteristics of high efficiency, environmental protection and safety.
The tunnel constructed by adopting the tunneling machine method is basically a long tunnel, ventilation, slag discharging and rail transportation need to be carried out continuously during tunnel tunneling, the used air duct, the slag discharging belt conveyor and the rail transportation occupy most space of the tunnel, operation procedures such as grouting and water discharging holes cannot be synchronously carried out for construction, grouting and water discharging hole operation can be carried out from inside to outside only after tunnel tunneling is completed and the air duct and the belt conveyor are dismantled, so that tunnel construction progress is slow, and even construction period is delayed seriously.
In addition, the prior document CN101403305A discloses a construction method for continuous mucking of a tunnel (tunnel) belt conveyor and synchronization of lining and excavation of a template trolley, which is specifically to arrange the belt conveyor in the tunnel (tunnel) and to make the front end of the belt conveyor located in an excavation working area, and the belt conveyor from the excavation working area to a lining area of the steel template trolley is located on an inverted arch precast block laid by TBM construction or is suspended on the top of the tunnel (tunnel) by a suspension manner during drilling and blasting construction; the belt conveyor is positioned on the basis of the laid inverted arch precast block or cast-in-place inverted arch at the front of the steel template trolley, and the belt conveyor is positioned on the basis of the laid inverted arch precast block or cast-in-place inverted arch at one side in the portal of the template trolley when passing through the template trolley; the other side in the steel template trolley portal is provided with an automobile channel or a track for a transport machine to pass through; setting a steel structure working frame which is ahead of the steel form trolley in front of the steel form trolley by utilizing a track circularly connected with the steel form trolley in front, and is used for treating underexcavation operation and laying a waterproof plate; after passing through the steel formwork trolley, the belt conveyor is positioned on the laid inverted arch precast block constructed by the TBM method from the lining operation area to the tunnel (tunnel) opening or is still hung at the top of the tunnel (tunnel) in a suspension mode during the drilling and blasting construction. By adopting the scheme, continuous mucking, lining of the template trolley and excavation can be synchronous, but omnibearing synchronous operation can not be realized, and the construction progress is improved slightly.
Disclosure of Invention
The invention aims to provide a synchronous operation rack for tunnel excavation construction and a synchronous construction method, which are used for solving the technical problems that ventilation, rail transportation and a slag discharge belt conveyor in the tunnel construction process are mutually interfered with other operation process spaces, the processes of ventilation, rail transportation, continuous slag discharge, tunneling, grouting, water discharge holes and the like cannot be synchronously operated, the tunnel construction efficiency is low, and the construction period is long.
In order to achieve the above purpose, the present invention adopts the following technical solutions.
The utility model provides a tunnel tunnelling construction is with synchronous operation rack, includes portable operation rack, its characterized in that: two sets of receiving mechanisms (respectively called as a first receiving mechanism and a second receiving mechanism) are arranged on a top-layer platform of the movable operation rack at intervals, a hard air channel is arranged between the two sets of receiving mechanisms, a fan is arranged on the hard air channel, the hard air channel passes through the movable operation rack after being bent downwards from the position where the receiving mechanisms are located, and the hard air channel is communicated with a ventilation hose; in the process of moving the movable working rack forwards, the first storage mechanism close to the head of the movable working rack is used for storing and storing the ventilation hose in front of the first storage mechanism, and the second storage mechanism close to the tail of the movable working rack is used for releasing the ventilation hose stored in the second storage mechanism in advance.
In order to better realize synchronous operation, three passing door openings are arranged below a top platform of the movable operation rack, the left passing door opening is used for running the slag discharging belt conveyor, the middle passing door opening is used for passing vehicles (or allowing personnel to pass if necessary), and the fan platform is used for installing a hard air duct and a fan.
In order to better realize synchronous operation, a construction operation platform is arranged below the left-side passing door opening, and the front and the rear of the fan platform are respectively provided with the construction operation platform.
According to the preferred scheme of the invention, the accommodating mechanism comprises an upright post, a suspension frame is transversely arranged on the upright post, an air duct is sleeved on the suspension frame, one end of the air duct is communicated with the hard air duct, and the other end of the air duct extends into the ventilation hose.
For conveniently storing and releasing the ventilation hose and improving the stability in the storing and releasing process, an expansion part is arranged at the end part of the air duct close to the ventilation hose.
In order to facilitate continuous operation, the storage mechanism is detachable and movable.
In a preferred embodiment of the present invention, the axis of the air duct coincides or substantially coincides with the axis of the ventilation hose suspended in the tunnel.
In order to facilitate continuous operation, the two sets of receiving mechanisms can be exchanged.
As a preferred embodiment of the present invention, the synchronous operation rack for tunnel boring construction of the present invention comprises:
the rail system is used for driving the movable operation rack, is arranged in the tunnel and is positioned below the movable operation rack; the ventilation hose is hung on the arch part of the tunnel; the slag discharge belt conveyor is hung on the wall of the tunnel and is positioned in the left side passing door opening of the movable operation rack; the electric drive system is arranged at the bottom of the movable operation rack and is adapted to the track system; the rail is arranged on the surface of the top platform; the two baffles are respectively arranged at the two ends of the track; the support platform is located on the track; the rollers are all arranged at the bottom of the support platform, and each roller is arranged on the track in a matching manner;
each accommodating mechanism comprises an upright post, a frame, an air duct, four cross beams, eight connecting plates, connecting flanges, an expansion part and a fastening ribbon, wherein the frame is transversely suspended on the upright post; the suspension frame is formed by connecting steel plates, a frame, a cross beam and a connecting plate.
Based on the synchronous operation rack for tunnel excavation construction, the invention also provides a synchronous construction method for tunnel excavation construction, which is characterized by comprising the following steps of:
step 1, dismantling a hanging chain or a support of a continuous slag-tapping belt conveyor, and enabling a longitudinal beam of the slag-tapping belt conveyor to be located on a roller at the bottom of a left-side passing door opening;
step 4, performing arch operation on a top platform between the first storage mechanism and the second storage mechanism, and performing side wall operation in other areas;
and 6, repeating the steps 1-5 until the tunneling construction of the tunnel is finished.
The present invention has the following advantageous effects.
On the basis of not influencing smooth ventilation in the tunnel tunneling construction process, the multi-process synchronous operation modes of tunnel tunneling, rail transportation, tunnel grouting, drain hole construction, slag tapping and the like are constructed, the partition synchronous operation of each process is realized, the problem of mutual interference of the synchronous operations of each process is solved, the tunnel construction efficiency can be greatly improved, the construction period is shortened, the construction cost is reduced, and the synchronous operation difficulty of each zone can be reduced.
By adopting the scheme of the invention, the air pipe/air duct at the top of the operation rack does not need to be removed in the whole tunnel excavation construction process, and particularly the construction at the top of the operation rack is not influenced completely.
Drawings
FIG. 1 is a schematic longitudinal section layout of a synchronous working rack for tunnel boring construction in an embodiment;
FIG. 2 is an enlarged schematic view of a portion D shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of an A-A synchronous working rack for tunnel boring construction in the embodiment;
FIG. 4 is a schematic cross-sectional view of a synchronous working rack B-B for tunnel boring construction in the embodiment;
FIG. 5 is a schematic cross-sectional view of a C-C synchronous operation rack for tunnel boring construction in the embodiment;
fig. 6 is an enlarged structural view of a portion E shown in fig. 5.
Reference numbers in the figures: 1-tunnel, 2-rail system, 3-ventilation hose, 4-slag belt conveyor, 5-steel wire rope, 6-anchor hook, 7-movable synchronous operation rack, 8-electric drive system, 9-fan platform, 10-fan, 11-top platform, 12-rail, 13-baffle, 14-support platform, 15-roller, 16-fixed anchor plate, 17-upright column, 18-connecting steel plate, 19-frame, 20-air duct, 21-beam, 22-connecting plate, 23-connecting flange, 24-hard air duct, 25-expansion part, 26-storage ventilation hose, 27-fastening ribbon, 28-grouting hole and 29-drilling machine.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the following embodiments are only used for understanding the principle of the present invention and the core idea thereof, and do not limit the scope of the present invention. It should be noted that modifications to the invention as described herein, which do not depart from the principles of the invention, are intended to be within the scope of the claims which follow.
Example 1
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, a synchronous operation rack for tunnel excavation construction includes a movable operation rack 7, two sets of receiving mechanisms are arranged on a top platform 11 of the movable operation rack 7 at intervals, a hard air duct 24 is arranged between the two sets of receiving mechanisms, a fan 10 is arranged on the hard air duct 24, the hard air duct 24 passes through the movable operation rack 7 after being bent downwards from a position where the receiving mechanism is located, and the hard air duct 24 is communicated with a ventilation hose 3; in the process of advancing the movable working platform 7, the first storage mechanism close to the head of the movable working platform 7 is used for storing and storing the ventilation hose 3 in front of the first storage mechanism, and the second storage mechanism close to the tail of the movable working platform 7 is used for releasing the ventilation hose 3 stored in the second storage mechanism in advance. Three passing door openings are arranged below a top platform 11 of the movable operation rack 7, the left passing door opening is used for running the slag discharge belt conveyor 4, the middle passing door opening is used for passing vehicles, and the fan platform is used for installing a hard air duct 24 and a fan 10.
Specifically, the method comprises the following steps: the movable operation rack 7 is arranged in the tunnel 1 in the forward direction, a passing door opening (namely a middle passing door opening) is arranged in the middle of the movable operation rack 7, and a plurality of layers of platforms are arranged on two sides of the movable operation rack 7; the track system 2 is arranged in the tunnel 1 and is positioned below the movable operation rack 7; the ventilation hose 3 is hung at the arch part of the tunnel 1; a belt conveyor passing door opening (namely a left side passing door opening) is arranged at the left side of the movable operation rack 7, and the slag-tapping belt conveyor 4 is positioned in the belt conveyor passing door opening; the steel wire rope 5 is arranged at the top of the tunnel 1, is positioned above the movable operation rack 7 and is used for hanging the ventilation hose 3; the anchor hooks 6 are uniformly anchored on the top wall of the tunnel 1, and the steel wire rope 5 penetrates through a circular ring of the anchor hooks 6; the electric drive system 8 is arranged at the bottom of the movable operation rack 7, and the electric drive system 8 is matched with the track system 2; the fan platform 9 is arranged on the lower layer of the right side of the movable operation rack 7; the fan 10 is fixedly arranged on the fan platform 9 and is positioned on the hard air duct 24 for guiding air circulation; the rail 12 is arranged on the upper surface of the top platform 11; the two baffles 13 are respectively arranged at the two ends of the track 12; a support platform 14, the support platform 14 being seated on the rail 12; the four rollers 15 are all arranged at the bottom of the support platform 14, and the bottoms of the four rollers 15 extend into the track 12 and are in sliding contact with the inner wall of the track 12; two groups of fixed anchor plates 16, wherein the two groups of fixed anchor plates 16 are respectively welded at the two ends of the upper layer of the support platform 14; the upright column 17 is connected to one group of fixed anchor plates 16 through bolts; the connecting steel plate 18 is welded on the side edge of the upright post 17; two ends of the hard air duct 24 are respectively connected with the containing mechanisms, and the hard air duct 24 is bent downwards from the position where the containing mechanisms are located and then penetrates through the interior of the movable operation rack; the air duct 20 is sleeved with the air hose 26 which is stored and stored, and the air hose 26 which is stored and stored is sleeved on the air duct 20; the grouting holes 28 are uniformly arranged on the tunnel 1 in a circular array; a plurality of drilling machines 29, each drilling machine 29 being provided on the mobile work table 7.
Each accommodating mechanism comprises an upright post 17, a frame 19, an air duct 20, four cross beams 21, eight connecting plates 22, a connecting flange 23, an expansion part 25 and a fastening bandage 27, the frame 19 is transversely suspended on the upright post 17, the air duct 20 is welded outside the frame 19, one end of the air duct 20 is communicated with a hard air duct 24, the other end of the air duct 20 extends into the ventilation hose 3, the four cross beams 21 are all welded on the frame 19, the connecting plates 22 are respectively welded at two ends of each cross beam 21, the connecting plates 22 are matched with connecting steel plates 18 on the side edges of the upright post 17 and connected through bolts, the connecting flange 23 is welded at the end part of the air duct 20 and close to one side of the fan 10, the expansion part 25 is welded at the other side of the air duct 20 (the expansion part 25 can also be integrally formed with the air duct 20), and the fastening bandage; the connecting steel plate 18, the frame 19, the cross beam 21 and the connecting plate 22 together form a suspension frame.
The outer diameter of the air duct 20 is slightly smaller than the inner diameter of the ventilation hose 3, and the axis of the air duct 20 coincides with the axis of the ventilation hose 3 suspended in the tunnel, so that the ventilation hose 3 is conveniently sleeved on the air duct 20. The upright post 17 is made of rectangular square steel, and a steel plate matched with the fixed anchor plate 16 is welded on a column base of the upright post 17.
The working principle is as follows: when the movable operation rack 7 moves back and forth, the suspension chains or the supports of the 4 of the slag-tapping belt conveyor are detached, so that the 4 longitudinal beams of the slag-tapping belt conveyor are located on the rollers at the bottom of the left-side through door opening, the slag-tapping belt conveyor 4 slides through the movable operation rack 7 along with the movement of the movable operation rack 7, and then the slag-tapping belt conveyor 4 is restored to the wall of the hole by using the suspension chains or the supports, and the normal operation of the moment is ensured; in the region of the movable operation rack 7, the slag-out belt conveyor 4 cannot influence other process operations, synchronous operation can be realized, because the outer diameter of the air duct 20 is smaller than the inner diameter of the ventilation hose 3, the ventilation hose 3 can be sleeved on the air duct 20 for storage, an arch part process operation platform is formed between two storage mechanisms above the top platform 11, the ventilation hose 3 in the space range cannot influence other process operations, synchronous operation can be realized, and synchronous construction of the regions outside the fans 10 at two ends of the movable operation rack 7 and the hard air duct 24 is realized in the process operations at two sides of the tunnel 1.
When carrying out other process construction, remove portable operation rack 7, demolish chain sling or support on the direction of advance belt feeder 4 of slagging tap, make 4 longerons of belt feeder of slagging tap locate on the gyro wheel of left side passing door opening bottom, the belt feeder 4 of slagging tap slides through portable operation rack 7 along with portable operation rack 7 removal, will slagging tap belt feeder 4 afterwards uses chain sling or support to resume on the hole wall. When the movable operation rack 7 is moved, the hanging ring for hanging and fixing the ventilation hose 3 is unfastened in the advancing direction of the movable operation rack 7, the ventilation hose 3 is unfastened from the steel wire rope 5, the ventilation hose 3 in the advancing direction is withdrawn and sleeved on the air guide cylinder 20 of the first storage mechanism along with the forward movement of the movable operation rack 7, meanwhile, the ventilation hose 3 sleeved on the air guide cylinder 20 of the second storage mechanism is pulled out from the rear part of the movable operation rack 7 and is hung on the steel wire rope 5 of the arch part of the tunnel 1 again, and after the movable operation rack 7 is moved in place, the ventilation hose 3 is fastened and fixed on the expansion part 25 side of the air guide cylinder 20 by using the fastening bandage 27, so that normal ventilation can be recovered.
When the movable operation rack 7 moves forwards for the length of one section of the ventilation hose, the first storage mechanism just stores and stores one section of the ventilation hose, the second storage mechanism just releases the other section of the ventilation hose, the first storage mechanism and the second storage mechanism are disassembled, the first storage mechanism with one section of the ventilation hose is exchanged with the second storage mechanism, and the disassembled parts are restored and then are normally ventilated. The specific operation is as follows: when the trolley moves for the length of one ventilation hose 3, one ventilation hose 3 is stored in the air duct 20 of the storage mechanism, the joints of the two ventilation hoses 3 are loosened, the upright posts 17 are installed at the ends of the expansion parts 25 of the two storage mechanisms, the side upright post 17 and the hard air duct 24 of the fan 10 are removed, the support platform 14 at the advancing end of the rack is pushed to be close to the other storage mechanism, the ventilation hose 3 stored in the support platform at the advancing end of the rack is moved to the other storage mechanism, the support platform 14 at the advancing end of the rack is retreated and fixed, the two upright posts 17 at the sides of the ventilators and the hard air duct 24 are reinstalled, the upright posts 17 at the ends of the expansion parts 25 of the two storage mechanisms are removed, the ventilation hose 3 is connected with the ventilation hose 3 hung at the arch part of the tunnel 1, and the ventilation hose 3 is fastened and fixed at the side of the expansion part 25.
Example 2
The synchronous construction method of the synchronous operation rack for tunnel excavation construction in the embodiment 1 includes the following steps:
step 1, dismantling a hanging chain or a support of a continuous slag-tapping belt conveyor, and enabling a longitudinal beam of the slag-tapping belt conveyor to be located on a roller at the bottom of a left-side passing door opening;
step 4, performing arch operation on a top platform between the first storage mechanism and the second storage mechanism, and performing side wall operation in other areas;
and 6, repeating the steps 1-5 until the tunneling construction of the tunnel is finished.
On the basis of not influencing smooth ventilation in the tunnel tunneling construction process, the multi-process synchronous operation modes of tunnel tunneling, rail transportation, tunnel grouting, drain hole construction, slag tapping and the like are constructed, the partition synchronous operation of each process is realized, the problem of mutual interference of the synchronous operations of each process is solved, the tunnel construction efficiency can be greatly improved, the construction period is shortened, the construction cost is reduced, and the synchronous operation difficulty of each zone can be reduced. By adopting the scheme of the invention, the air pipe/air duct at the top of the operation rack does not need to be removed in the whole tunnel excavation construction process, and particularly the construction at the top of the operation rack is not influenced completely.
It should be noted that the foregoing embodiment has been described only with respect to the forward direction construction mode, but the same is also applicable to the construction mode for the backward direction, that is, the traveling work platform is used for both forward construction and backward construction.
Claims (11)
1. The utility model provides a tunnel tunnelling construction is with synchronous operation rack, includes portable operation rack, its characterized in that: two sets of storage mechanisms are arranged on a top-layer platform of the movable operation rack at intervals, a hard air channel is arranged between the two sets of storage mechanisms, a fan is arranged on the hard air channel, the hard air channel penetrates through the movable operation rack after being bent downwards from the position where the storage mechanisms are located, and the hard air channel is communicated with a ventilation hose; in the process of moving the movable working rack forwards, the first storage mechanism close to the head of the movable working rack is used for storing and storing the ventilation hose in front of the first storage mechanism, and the second storage mechanism close to the tail of the movable working rack is used for releasing the ventilation hose stored in the second storage mechanism in advance.
2. The synchronous operation rack for tunnel excavation construction according to claim 1, characterized in that: the top layer platform below of portable operation rack is equipped with three current door opening, and the door opening is walked in the left side is used for the belt feeder operation of slagging tap, and the current door opening in middle part is used for the vehicle current, and the fan platform is used for installing stereoplasm wind channel and fan.
3. The synchronous operation rack for tunnel excavation construction according to claim 2, characterized in that: and a construction operation platform is also arranged below the left passing door opening, and the front and the rear of the fan platform are respectively provided with the construction operation platform.
4. The synchronous operation rack for tunnel excavation construction according to any one of claims 1 to 3, characterized in that: the accommodating mechanism comprises a stand column, a suspension frame is transversely arranged on the stand column, an air duct is sleeved on the suspension frame, one end of the air duct is communicated with a hard air duct, and the other end of the air duct extends into the ventilation hose.
5. The synchronous operation rack for tunnel excavation construction according to claim 4, characterized in that: an expansion part is arranged at the end part of the air duct close to the ventilation hose.
6. The synchronous operation rack for tunnel excavation construction according to claim 5, characterized in that: the containing mechanism is detachable and movable.
7. The synchronous operation rack for tunnel excavation construction according to claim 6, characterized in that: the axis of the air duct coincides with or basically coincides with the axis of the ventilation hose suspended in the tunnel.
8. The synchronous operation rack for tunnel excavation construction according to claim 7, characterized in that: the two sets of receiving mechanisms can be exchanged.
9. The synchronous operation rack for tunnel boring construction according to claim 8, characterized by comprising:
the rail system is used for driving the movable operation rack, is arranged in the tunnel and is positioned below the movable operation rack; the ventilation hose is hung on the arch part of the tunnel; the slag discharge belt conveyor is hung on the wall of the tunnel and is positioned in the left side passing door opening of the movable operation rack; the electric drive system is arranged at the bottom of the movable operation rack and is adapted to the track system; the rail is arranged on the surface of the top platform; the two baffles are respectively arranged at the two ends of the track; the support platform is located on the track; the rollers are all arranged at the bottom of the support platform, and each roller is arranged on the track in a matching manner;
each accommodating mechanism comprises an upright post, a frame, an air duct, four cross beams, eight connecting plates, connecting flanges, an expansion part and a fastening ribbon, wherein the frame is transversely suspended on the upright post; the suspension frame is formed by connecting steel plates, a frame, a cross beam and a connecting plate.
10. The synchronous construction method using the synchronous working rack for tunnel boring construction according to any one of claims 1 to 9, characterized by comprising the steps of:
step 1, dismantling a hanging chain or a support of a continuous slag-tapping belt conveyor, and enabling a longitudinal beam of the slag-tapping belt conveyor to be located on a roller at the bottom of a left-side passing door opening;
step 2, moving the movable operation rack forwards; in the process of moving the movable operation rack, the ventilation hose in a preset length in front of the first storage mechanism is stored and stored on the first storage mechanism, meanwhile, the ventilation hose stored in advance on the second storage mechanism is released for a preset length, and the released ventilation hose is hung on a steel wire rope of an arch part of the tunnel;
step 3, in the process of moving the movable operation rack forwards, the slipped-out slag-out belt conveyor is suspended on the wall of the hole again;
and 4, performing arch operation on the top platform between the first storage mechanism and the second storage mechanism, and performing side wall operation in other areas.
11. Step 5, when the movable operation rack moves forwards for the length of one section of the ventilation hose, the first storage mechanism just stores and stores one section of the ventilation hose, the second storage mechanism just releases the one section of the ventilation hose, the first storage mechanism and the second storage mechanism are disassembled, the first storage mechanism with one section of the ventilation hose and the second storage mechanism are exchanged, and the disassembled parts are reset and then normal ventilation is recovered;
and 6, repeating the steps 1-5 until the tunneling construction of the tunnel is finished.
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| CN114215574A (en) * | 2021-12-21 | 2022-03-22 | 中建八局第三建设有限公司 | Tunnel ventilation system |
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| CN112065492B (en) | 2022-07-19 |
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