CN107387093A - A kind of shallow buried covered excavation system and construction method suitable for soft soil layer - Google Patents
A kind of shallow buried covered excavation system and construction method suitable for soft soil layer Download PDFInfo
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- CN107387093A CN107387093A CN201710679701.6A CN201710679701A CN107387093A CN 107387093 A CN107387093 A CN 107387093A CN 201710679701 A CN201710679701 A CN 201710679701A CN 107387093 A CN107387093 A CN 107387093A
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- buried covered
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims abstract description 51
- 239000002689 soil Substances 0.000 title claims abstract description 27
- 238000003801 milling Methods 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 210000000078 claw Anatomy 0.000 claims abstract description 11
- 239000004567 concrete Substances 0.000 claims description 25
- 239000011378 shotcrete Substances 0.000 claims description 20
- 238000013461 design Methods 0.000 claims description 12
- 210000005239 tubule Anatomy 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000011835 investigation Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000005553 drilling Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000009933 burial Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000196133 Dryopteris Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-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
- E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for
-
- 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
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)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of shallow buried covered excavation system and construction method suitable for soft soil layer, shallow buried covered excavation system includes fuselage, left arm, right arm, injection unit and the supply unit being arranged on fuselage, the injection unit are arranged on the middle part of fuselage, and the supply unit is in waist；Excavation lift unit is provided with the left arm, Rockbolt element is provided with the right arm and unit is dug in milling, each unit modularization is arranged on the left arm and right arm of fuselage；The shallow buried covered excavation system also includes the unit that is unearthed；Track on the unearthed unit is arranged in main track tunnel, and conveyer belt is arranged in the transverse passage-way vertical with main track tunnel, and electric transporting vehicle is set in orbit, and claw bucket sling is arranged at the port of vertical shaft.Shallow buried covered excavation system and construction method provided by the invention, integrated mechanization environmental protection construction is realized, the efficiency of constructing tunnel is improved, reduces labor intensity, improve the security of construction, greatly improve Tunnel Engineering mechanized construction technical merit.
Description
Technical field
The present invention relates to technical field of tunnel construction, more particularly to a kind of shallow buried covered excavation system suitable for soft soil layer and
Construction method.
Background technology
Shallow burial hidden digging is to carry out one kind side of all kinds underground chamber boring construction in the underground nearer apart from earth's surface
Method.In the weak surrounding rock stratum of cities and towns, the constructing underground building under the conditions of shallow embedding, premised on transforming geological conditions, with control
Ground settlement is attached most importance to, and preliminary bracing means, referred to as shallow burial hidden digging are used as using grid and spray anchor.Shallow buried covered excavation technology
Although developing in constantly improve, each construction link is still constructed mainly by manpower, is had the following disadvantages in construction：
（1）Low construction efficiency, average day construction production efficiency is only to realize that tunnel machine is turned into the 8.3% of the shield method of industry.
（2）Artificial to excavate the earthwork using shovel, spade, pick, labor intensity is big；
（3）Operating environment is poor, and dust pollution influences the occupational health of workmen than more serious in hole.
The content of the invention
The purpose of the present invention is to be directed to above-mentioned technical problem, there is provided a kind of shallow buried covered excavation system suitable for soft soil layer
And construction method, its is rational in infrastructure, realizes integrated mechanization environmental protection construction, improves the efficiency of constructing tunnel, reduce labor
Fatigue resistance, the security of construction is improved, greatly improve Tunnel Engineering mechanized construction technical merit.
Technical scheme
In order to solve the above technical problems, a kind of shallow buried covered excavation system suitable for soft soil layer provided by the invention, including fuselage,
Left arm, right arm, injection unit and the supply unit being arranged on fuselage；The injection unit is arranged on the middle part of fuselage, described
Supply unit is penetrated by head to afterbody and set in waist, and excavation lift unit, the right arm are provided with the left arm
On be provided with Rockbolt element and milling and dig unit, each unit modularization is arranged on the left arm and right arm of fuselage；The shallow buried covered excavation system
System also includes the unit that is unearthed；The unearthed unit includes electric transporting vehicle, track, conveyer belt and claw bucket sling, and track is arranged on just
In threaded list road, conveyer belt is arranged in the transverse passage-way vertical with main track tunnel, and electric transporting vehicle is set in orbit, and claw bucket sling is set
Put at the port of vertical shaft.
Further, the track is additionally arranged in transverse passage-way, and the track in transverse passage-way leads to the track in main track tunnel
Cross arc docking；The conveyer belt in track and transverse passage-way in transverse passage-way be arranged in parallel.
Simultaneously present invention also offers a kind of shallow buried covered excavation system construction method suitable for soft soil layer, it is specifically included
Following steps：
S1, the hydrogeology and construction space information of job site are investigated, it is corresponding according to investigation information configuration shallow buried covered excavation system
The size of each unit module；
S2, shallow buried covered excavation system each unit module is gone into the well, assembled, it is in place in face and carry out the preparation before construction；
S3, start the Rockbolt element on right arm, set advanced tubule；
S4, start the excavation lift unit on left arm, excavate the earthwork of face, the unit Real-Time Transport earthwork of being unearthed；
Unit is dug in S5, the milling started on right arm, is carried out frame trough position milling and is cutd open, the unit Real-Time Transport earthwork of being unearthed；
S6, start the lift unit on left arm, auxiliary installation grid or bow member；
S7, start injection unit, gunite concrete.
Further, in step S3, described the step of setting advanced tubule, is as follows：
S3-1, operating system right arm, right arm slide unit is set to move forward to front end；
S3-2, system right arm is adjusted, align the anchor pole on Rockbolt element accurate；
S3-3, open ductule and set device, conduit is squeezed into desired depth；
S3-4, control ductule set the retrogressing of device, reset system right arm.
Further, in step S4, it is described excavate face the earthwork the step of be：
S4-1, operating system left arm, excavation lift unit is set to adjust to correct position；
S4-2, operation excavate lift unit and carry out excavation operation, and control digging shovel is vertical with tunnel-side, excavates side wall frame trough；
S4-3, operation of slagging tap is carried out when excavating operation.
Further, in step S5, the step of frame trough position milling is cutd open, is：
S5-1, operates right arm, and cell position and angle are dug in regulation milling；
S5-2, open milling and dig finite element rotation controlling switch, carry out milling and dig operation；
S5-3, milling are dug after the completion of operation, and right arm resets；
Frame trough position is dug in S5-4, manual amendment milling.
Further, the step of unearthed unit Real-Time Transport earthwork is as follows：
Dregs is delivered to mechanical afterbody electric transporting vehicle by S6-1, mechanical supply unit band；
S6-2, electric transporting vehicle load dregs；
S6-3, electric transporting vehicle are transported in transverse passage-way by track；
S6-4, electric transporting vehicle topple over dregs to conveyer belt, and dregs is transported in vertical shaft by conveyer belt；
Dregs in vertical shaft is promoted to ground by S6-5, claw bucket sling.
Further, it is as follows the step of the gunite concrete in step S7：
S7-1, starts injection unit, and trial operation checks the air-tightness of injection unit；
S7-2, clean by spray plane, the concrete to stir is poured into injection unit；
S7-3, gunite concrete, makes concrete reach setting thickness from top to bottom.
Beneficial effect of the present invention：
A kind of shallow buried covered excavation system and construction method suitable for soft soil layer provided by the invention, its is rational in infrastructure, realizes
Integrated mechanization environmental protection construction, improves the efficiency of constructing tunnel, reduces labor intensity, improve the security of construction, greatly
Width improves Tunnel Engineering mechanized construction technical merit.
Brief description of the drawings
By the detailed description made in conjunction with the following drawings, above-mentioned advantage of the invention will be apparent and be easier reason
Solution, these accompanying drawings are simply schematical, are not intended to limit the present invention, wherein：
Fig. 1 is shallow buried covered excavation system of the present invention（Be free of out figure unit）Structural representation；
Fig. 2 is the structural representation of the unit that is unearthed of shallow buried covered excavation system of the present invention；
Fig. 3 is the Dryopteris sublaetaChing et Hsu method flow diagram of the present invention suitable for soft soil layer；
Fig. 4 is the flow chart for setting advanced tubule of the present invention；
Fig. 5 is the flow chart of the earthwork of the excavation face of the present invention；
Fig. 6 is the flow chart that the frame trough position milling of the present invention is cutd open；
Fig. 7 is the flow chart of the unit Real-Time Transport earthwork of being unearthed of the present invention；
Fig. 8 is the flow chart of the gunite concrete of the present invention.
In accompanying drawing, the part representated by each label is as follows：
1. left arm；2. right arm；3. injection unit；4. excavate lift unit；5. Rockbolt element；6. unit is dug in milling；7. be unearthed unit；
8. electric transporting vehicle；9. track；10. conveyer belt；11. claw bucket sling；12. main track tunnel；13. transverse passage-way；14. vertical shaft；15. conveying
Unit（Including conveyer belt and shovel board）；16. shovel board；17. conveyer belt.
Embodiment
Fig. 1 to Fig. 8 is of the present invention a kind of suitable for the shallow buried covered excavation system of soft soil layer and the correlation of construction method
Schematic diagram.With reference to specific embodiments and the drawings, the present invention is described in detail.
The embodiment recorded herein is specific embodiment of the invention, for illustrating the design of the present invention,
It is explanatory and exemplary, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Outside embodiment, those skilled in the art can also be based on the application claims and specification disclosure of that using aobvious and
The other technical schemes being clear to, these technical schemes include any obvious using making for the embodiment to recording herein
The technical scheme of substitutions and modifications.
The accompanying drawing of this specification is schematic diagram, aids in illustrating the design of the present invention, it is schematically indicated the shape of each several part
And its correlation.It note that for the ease of clearly showing the structure of each part of the embodiment of the present invention, between each accompanying drawing
Do not drawn according to identical ratio.Identical reference marker is used to represent identical part.
A kind of structural representation of shallow buried covered excavation system suitable for soft soil layer of the present invention, as shown in Figure 1（It is unearthed
Unit is not shown）, including fuselage, the left arm 1 and right arm 2 and injection unit 3 and supply unit 15 being arranged on fuselage, its feature
It is, the injection unit 3 is arranged on the middle part of fuselage, and the supply unit 15 is penetrated by head to afterbody in waist
Set, be provided with the left arm 1 and excavate lift unit 4, Rockbolt element 5 is provided with the right arm 2 and unit 6 is dug in milling, respectively
Unit-modularized left arm 1 and right arm 2 installed in fuselage.
The shallow buried covered excavation system also includes the unit 7 that is unearthed, and Fig. 2 is the unit that is unearthed of shallow buried covered excavation system of the present invention
Structural representation, it includes electric transporting vehicle 8, track 9, conveyer belt 10 and claw bucket sling 11, and track 9 is arranged on main track tunnel 12
Interior, conveyer belt 10 is arranged in the transverse passage-way 13 vertical with main track tunnel 12, and electric transporting vehicle 8 is arranged on track 9, claw bucket sling
11 are arranged at the port of vertical shaft 14.
The track 9 is additionally arranged in transverse passage-way 13, and the track 9 in transverse passage-way 13 and the track 9 in main track tunnel 12 are logical
Cross arc docking；Track 9 in transverse passage-way 13 be arranged in parallel with the conveyer belt 10 in transverse passage-way 13.
Present invention also provides a kind of shallow buried covered excavation system construction method suitable for soft soil layer, such as its flow chart, Fig. 3
Shown, it specifically includes following steps：
S1, the hydrogeology and construction space information of job site are investigated, it is corresponding according to investigation information configuration shallow buried covered excavation system
The size of each unit module；
Specifically, Construction in Preparatory Stage, drawing should be sufficiently familiar with, grasps design idea with requiring；Before construction, the hydrology should be checked
Matter data, underground utilities, building etc. in the range of place are checked, and formulate corresponding safeguard measure；Construction stage, should be according to setting
Count file and existing monitoring code requirement carries out construction monitoring, and feedback monitoring data in time, accomplish information-aided construction conscientiously；Machine
Tool lectotype selection, site acceptance should meet the relevant regulations of this engineering method；Tunnel structure section, which need to adjust, meets mechanical arrangement and week
Side job space safety requirements, inverted arch preferably select flat form.
The appearance and size and weight reasonable selection that workmen should equip according to site condition, shallow buried covered excavation have been lifted and reseted
It is standby；Hold facility place should meet the needs of lectotype selection, and equipment hoisting area occupied of going into the well is preferably greater than 15m × 8m, and ground is held
Carry Etech and be more than 2t/m2。
S2, shallow buried covered excavation system each unit module is gone into the well, assembled, it is in place in face and carry out the beam worker before construction
Make；
Specifically, the requirement of transition job instruction is equipped according to shallow buried covered excavation, carry out shallow buried covered excavation equipment goes into the well and assemble work
Make, complete assembling and check and accept；Equipment should carry out safe practice to job site personnel using unit and tell somebody what one's real intentions are, and to equipment operation, safeguard
Maintenance, maintenance personal carry out safety education；Equipment handling should formulate special scheme before going into the well, after report management examination ＆ approval can handling,
The crane capacity of lifting appliance should meet requirement by checking computations, and hoisting and hanging operation work in every should meet that safe practice is advised
Range request；Vertical shaft headroom size is no less than 5m × 4m（Transverse passage-way ingate is arranged at short side）, and should not in the range of this
Any type of inner support be present, to ensure Clearance requirement that equipment is gone into the well.
S3, start the Rockbolt element 5 on right arm 2, set advanced tubule；
In this step, the flow chart for setting advanced tubule, as shown in figure 4, it specifically includes following steps：
S3-1, operating system right arm 2, right arm slide unit is set to move forward to front end；
S3-2, adjustment system right arm 2, align the anchor pole on Rockbolt element 5 accurate；
S3-3, open ductule and set device, conduit is squeezed into desired depth；
S3-4, control ductule set the retrogressing of device, reset system right arm 2.
It should be made hole position according to design requirement and wall rock condition, make a mark before drilling；Shallow buried covered excavation equipment slide unit moves
Dynamic, right arm strenuous vibration and when rocking, forbids bore operation；After right arm is moved to specified location nearby, it should ensure that right arm is slow
Smoothly move to bore position；Rockbolt element rotating speed is preferably reduced after drilling in place, steady retreat withdraws from operation hole；Bore operation
During should be provided with special messenger and command, commanding need to shut down in advance as that need to approach inspection.Not handy hand examination during bore operation
Hold drilling rod；Auxiliary impact mode can be taken by being obstructed such as drilling, such as can not still be solved, and should be shut down to search reason and take and accordingly be arranged
Apply；When installing ductule, rig must be in stopped status, and ductule is screwed in into drill bushing；When right arm works, car body should approach leave from office
Rank；Slide unit should be moved to forefront, fixed with taper bearing pin；In operation process, pipeline must not be squeezed in core by mechanical arm
On cubsoil or hole wall.It should be noted that protection fluid pressure line, avoids it from being squeezed damage；After ductule is set, anchor pole is inverted
Unit separates ductule and Rockbolt element；For silt, silty clay stratum, static pressure type Rockbolt element can be used to carry out small lead
Pipe is set；Set vibration rotation type Rockbolt element can be used to carry out ductule containing cobble, rubble stratum；Should according to " first vault,
The method progress ductule of both sides afterwards " sets construction, and every conduit must carry out slip casting operation in time after the completion of setting.
S4, start the excavation lift unit 4 on left arm 1, excavate the earthwork of face, the Real-Time Transport earthwork of unit 7 of being unearthed；
In this step, the flow chart of the earthwork for excavating face, as shown in figure 5, it specifically includes following steps：
S4-1, operating system left arm 1, excavation lift unit 4 is set to adjust to correct position；
S4-2, operation excavate lift unit and carry out excavation operation, and control digging shovel is vertical with tunnel-side, excavates side wall frame trough；
S4-3, operation of slagging tap is carried out when excavating operation.
Benching tunnelling method should take into full account operating condition of geology, excavated section span and plant equipment etc., step when constructing
Length should meet design requirement or arrangement and method for construction；Earth excavation order should be from top to bottom, should first be excavated at vault middle part, after open
Dig both sides；Both sides should be first excavated at inverted arch, it is rear to excavate middle part；Top bar is excavated when annular stays the construction of core local method, clay silt
Stratum preferably uses milling to dig unit cutting soil；Extra-fine sand and sandy gravel preferably use hand excavation, and left arm auxiliary is unearthed；Excavate core
It should ensure that Core Soil is regular when native, counter-slope must not occur；Break down or have abnormal sound, should parking checking, and cutting off immediately
General supply；Answered when running into compared with ratchel or barrier it is to be cleaned after can excavate, not handy excavation lift unit is broken or with singly
Stone is dug by force on side；It must be cut the earth again after complete machine comes to a complete stop during operation, excavation lift unit must not rise and fall too quickly；Lifted using excavation
When unit excavates side wall frame trough and inverted arch frame trough, forbid to collide just branch tunnel wall；Extra-fine sand and sand-pebble layer are being opened
When digging down step, stepped locations are settable to unload power groove, reduces soil body slump risk, and unload and stayed between power groove and top bar Core Soil
The passage that personnel pass through should be met by putting width.
Unit 6 is dug in S5, the milling started on right arm 2, is carried out frame trough position milling and is cutd open, the Real-Time Transport earthwork of unit 7 of being unearthed.
In this step, the flow chart that frame trough position milling is cutd open, as shown in fig. 6, it specifically includes following steps：
S5-1, operates right arm 2, and cell position and angle are dug in regulation milling；
S5-2, open milling and dig finite element rotation controlling switch, carry out milling and dig operation；
S5-3, milling are dug after the completion of operation, and right arm 2 resets；
Frame trough position is dug in S5-4, manual amendment milling.
Unit is dug in mobile milling should be at the uniform velocity steady, ensures face stabilizer and avoids backbreaking；Milling dig cell operation when, support with
Angle between right arm should be maintained at 0 ° ~ 90 °, forbid working under 180 ° of states；Milling, which is dug in operation process, must not damage core
Cubsoil profile and size.
The flow chart of the Real-Time Transport earthwork of unearthed unit 7, as shown in fig. 7, it specifically includes following steps：
Dregs is delivered to mechanical afterbody electric transporting vehicle by S6-1, mechanical supply unit 15.
S6-2, electric transporting vehicle 8 load dregs；
S6-3, electric transporting vehicle 8 are transported in transverse passage-way 13 by track 9；
S6-4, electric transporting vehicle 8 topple over dregs to conveyer belt 10, and dregs is transported in vertical shaft 14 by conveyer belt 10；
Dregs in vertical shaft 14 is promoted to ground by S6-5, claw bucket sling 11.
Finally the dregs for being promoted to ground is transported outward and appeared on the scene.
The opening and closing left and right frame of the shovel board 16 of supply unit 15 should be able to left and right folding, driver should be noted that nurse during conveying,
, should be according to the reasonable feeding of the working condition of supply unit 15 during usage mining 4 feeding of lift unit, unsuitable windrow is excessive.Conveying is single
First 15 conveyer belt control devices should be able to realize positive and negative rotating function, the situation of getting stuck such as occur, can push ahead conveying handle, reversely rotation
Transfer material motor；Then conveying handle is pulled back again.After releasing gets stuck, continue normal conveying；It can not be solved by repeatedly trial
During except getting stuck, carry out inspection and maintenance should be shut down.When there is buildup in the bottom of shovel board 16, should by lifting, decline shovel board 16 and
Shi Qingli buildups.Lift unit is excavated to forbid directly to hit opening and closing left and right frame and conveying trough.
S6, start the excavation lift unit 4 on left arm 1, auxiliary installation grid or bow member；
Specifically, first, grid does the flat processing of rammer, boarding cushion block for pin；Then, operation left arm joystick falls scraper bowl
To proper height, frock is arranged on left arm fixed position；Then, bow member or grid are arranged on special tooling and fix tightly
Gu；Then, operate left arm and bow member or grid are transported to riding position, manually installed fixed bow member or grid, operate left arm control
Handle processed withdraws scraper bowl.
Grid arch springing should be squeezed into lock pin anchor tube by design requirement or be leveled up on the solid soil body；Grid/bow member should be in tunnel
Road is set up in time after excavating, and steelframe sole void slag and debris should be removed before installation；Lock pin anchor tube, which sets angle and should met, to be set
Count documentation requirements；Shaped steel arch, reinforcing bar grid and wall answer wedging, and every reinforcing bar grid node and adjacent grid must longitudinally divide
It is not connected firmly, I-steel bow member can use Push-fit to install；The position of grid installation, joint connection, longitudinally connected muscle are answered
Meet design requirement；Each section grid, connecting plate should be closely connected, and longitudinally connected muscle spacing should meet design requirement；Bar-mat reinforcement should be with tunnel
Road section configuration is adapted, and is coupled with steelframe etc. firm；The grid spacing of bar-mat reinforcement should meet design requirement, and bar-mat reinforcement should be with
Grid is connected firmly.
S7, start injection unit 3, gunite concrete.
In this step, the flow chart of the gunite concrete, as shown in figure 8, it specifically includes following steps：
S7-1, starts injection unit 3, and trial operation checks the air-tightness of injection unit 3；
S7-2, clean by spray plane, the concrete to stir is poured into injection unit 3；
S7-3, gunite concrete, makes concrete reach setting thickness from top to bottom.
Specifically, gunite concrete should mix accelerator, and raw material should meet the requirements, and forbidding to select has alkali active aggregate；
Place cleaning is answered before gunite concrete, checks and excavates size, descum and deposit；It should conserve, support after gunite concrete 2h
Protect the time should not be less than 14 days, when temperature be less than+5 DEG C, must not wet curing；Construction of shotcrete area temperature and compound enter
Must not be less than by entering spraying machine temperature by+5 DEG C, and gunite concrete must not endure cold when being less than the 40% of design strength；Whitewashing personnel are necessary
Protective articles is equipped with, other staff should be away from spray operation face；The spray regime of gunite concrete should be according to engineering geology and water
The conditions such as literary geology, emitted dose determine；Gunite concrete is completed, and should lay measuring point in time, and obtains data, analysis branch at initial stage
The situation of change of shield, so as to guiding construction；During gunite concrete, nozzle with being kept vertical substantially by spray plane, distance 0.6m~
1.0m, each jet thickness 8cm~10cm；Grid, bar-mat reinforcement should be covered all by gunite concrete, and protective layer thickness should meet
Design drawing requirement；When using crawler type shallow buried covered excavation equipment, inverted arch gunite concrete protective layer thickness preferably suitably thickens.
The shortcomings that compared to prior art and deficiency, a kind of shallow buried covered excavation system suitable for soft soil layer provided by the invention
System and construction method, its is rational in infrastructure, realizes integrated mechanization environmental protection construction, improves the efficiency of constructing tunnel, reduce
Labor intensity, the security of construction is improved, greatly improve Tunnel Engineering mechanized construction technical merit.
The present invention is not limited to the above-described embodiments, and anyone can draw other various forms under the enlightenment of the present invention
Product, it is every that there is technical side identical or similar to the present application however, make any change in its shape or structure
Case, it is within the scope of the present invention.
Claims (8)
1. a kind of shallow buried covered excavation system suitable for soft soil layer, including fuselage, the left arm being arranged on fuselage（1）, right arm
（2）, injection unit（3）And supply unit（15）, it is characterised in that the injection unit（3）The middle part of fuselage is arranged on, it is described
Supply unit（15）In waist, penetrated and set by head to afterbody；The left arm（1）On be provided with excavation lift unit
（4）, the right arm（2）On be provided with Rockbolt element（5）And unit is dug in milling（6）, left arm of each unit modularization installed in fuselage
（1）And right arm（2）；The shallow buried covered excavation system also includes the unit that is unearthed（7）；The unearthed unit（7）Including electric transporting vehicle
（8）, track（9）, conveyer belt（10）And claw bucket sling（11）, track（9）It is arranged on main track tunnel（12）It is interior, conveyer belt（10）Set
With main track tunnel（12）Vertical transverse passage-way（13）It is interior, electric transporting vehicle（8）It is arranged on track（9）On, claw bucket sling（11）If
Put in vertical shaft（14）Port at.
2. it is applied to the shallow buried covered excavation system of soft soil layer according to claim 1, it is characterised in that the track（9）Also
It is arranged on transverse passage-way（13）It is interior, transverse passage-way（13）Interior track（9）With main track tunnel（12）Interior track（9）Pass through arc pair
Connect；Transverse passage-way（13）Interior track（9）With transverse passage-way（13）Interior conveyer belt（10）It is arranged in parallel.
A kind of 3. shallow buried covered excavation system construction method suitable for soft soil layer, it is characterised in that comprise the following steps：
S1, the hydrogeology and construction space information of job site are investigated, it is corresponding according to investigation information configuration shallow buried covered excavation system
The size of each unit module；
S2, shallow buried covered excavation system each unit module is gone into the well, assembled, it is in place in face and carry out the preparation before construction；
S3, start right arm（2）On Rockbolt element（5）, set advanced tubule；
S4, start left arm（1）On excavation lift unit（4）, the earthwork of face is excavated, be unearthed unit（7）Real-Time Transport soil
Side；
S5, start right arm（2）On milling dig unit（6）, carry out frame trough position milling and cut open, be unearthed unit（7）The Real-Time Transport earthwork；
S6, start left arm（1）On excavation lift unit（4）, aid in installation grid or bow member；
S7, start injection unit（3）, gunite concrete.
4. it is applied to the shallow buried covered excavation system construction method of soft soil layer according to claim 3, it is characterised in that step S3
In, described the step of setting advanced tubule, is as follows：
S3-1, operating system right arm（2）, right arm slide unit is moved forward to front end；
S3-2, adjust system right arm（2）, make Rockbolt element（5）On anchor pole contraposition it is accurate；
S3-3, open advanced tubule and set device, conduit is squeezed into projected depth；
S3-4, control advanced tubule set the retrogressing of device, reset system right arm（2）.
5. it is applied to the shallow buried covered excavation system construction method of soft soil layer according to claim 3, it is characterised in that step S4
In, it is described excavate face the earthwork the step of be：
S4-1, operating system left arm（1）, make excavation lift unit（4）Adjust to correct position；
Lift unit is excavated in S4-2, operation（4）Excavation operation is carried out, control, which is dug, shovels, excavation side wall grid vertical with tunnel-side
Groove；
S4-3, operation of slagging tap is carried out when excavating operation.
6. it is applied to the shallow buried covered excavation system construction method of soft soil layer according to claim 3, it is characterised in that step S5
In, the step of frame trough position milling is cutd open is：
S5-1, operate right arm（2）, regulation milling digging unit（6）Position and angle；
S5-2, open milling and dig unit（6）Rotary control switch, carry out milling and dig operation；
S5-3, milling are dug after the completion of operation, right arm（2）Reset；
Frame trough position is dug in S5-4, manual amendment milling.
7. according to claim 3 be applied to soft soil layer shallow buried covered excavation system construction method, it is characterised in that it is described go out
Native unit（7）The step of Real-Time Transport earthwork, is as follows：
S6-1, mechanical supply unit（15）Dregs is delivered to mechanical afterbody electric transporting vehicle（8）；
S6-2, electric transporting vehicle（8）Load dregs；
S6-3, electric transporting vehicle（8）Pass through track（9）It is transported to transverse passage-way（13）It is interior；
S6-4, electric transporting vehicle（8）Dregs is toppled over to conveyer belt（10）On, conveyer belt（10）Dregs is transported to vertical shaft（14）
It is interior；
S6-5, claw bucket sling（11）By vertical shaft（14）Interior dregs is promoted to ground.
8. it is applied to the shallow buried covered excavation system construction method of soft soil layer according to claim 3, it is characterised in that step S7
In, it is as follows the step of the gunite concrete：
S7-1, start injection unit（3）, trial operation inspection injection unit（3）Air-tightness；
S7-2, clean by spray plane, the concrete to stir is poured into injection unit（3）；
S7-3, gunite concrete, makes concrete reach design thickness from top to bottom.
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| CN201710679701.6A CN107387093A (en) | 2017-08-10 | 2017-08-10 | A kind of shallow buried covered excavation system and construction method suitable for soft soil layer |
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| CN107893661A (en) * | 2017-12-15 | 2018-04-10 | 成都格机械有限公司 | Tunnel piercing chassis |
| CN108678753A (en) * | 2018-03-29 | 2018-10-19 | 中交路桥北方工程有限公司 | Reverse-slope tunnel construction method |
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| CN110966016A (en) * | 2019-12-30 | 2020-04-07 | 中铁隧道局集团有限公司 | TBM host machine belt conveyor |
| CN113446009A (en) * | 2021-06-01 | 2021-09-28 | 北京市政建设集团有限责任公司 | Intelligent shallow-buried underground excavation operation method and equipment and storage medium |
| CN113684875A (en) * | 2021-07-08 | 2021-11-23 | 浙江中瑞建筑工程有限公司 | Construction process for ultra-wide deep foundation pit in soft soil stratum |
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| CN113446009A (en) * | 2021-06-01 | 2021-09-28 | 北京市政建设集团有限责任公司 | Intelligent shallow-buried underground excavation operation method and equipment and storage medium |
| CN113446009B (en) * | 2021-06-01 | 2023-06-27 | 北京市政建设集团有限责任公司 | Intelligent shallow buried underground excavation operation method, equipment and storage medium |
| CN113684875A (en) * | 2021-07-08 | 2021-11-23 | 浙江中瑞建筑工程有限公司 | Construction process for ultra-wide deep foundation pit in soft soil stratum |
| CN113684875B (en) * | 2021-07-08 | 2022-08-23 | 浙江中瑞建筑工程有限公司 | Soft soil stratum ultra-wide deep foundation pit construction process |
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