CN108691545A - A kind of continuous tunneling construction method of bolting with wire mesh adapting to Complex Roof shape - Google Patents
A kind of continuous tunneling construction method of bolting with wire mesh adapting to Complex Roof shape Download PDFInfo
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- CN108691545A CN108691545A CN201810293865.XA CN201810293865A CN108691545A CN 108691545 A CN108691545 A CN 108691545A CN 201810293865 A CN201810293865 A CN 201810293865A CN 108691545 A CN108691545 A CN 108691545A
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- top plate
- rack beams
- hydraulic support
- hydraulic
- support
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 230000005641 tunneling Effects 0.000 title claims abstract description 22
- 239000003245 coal Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 210000003746 feather Anatomy 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000032258 transport Effects 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
- 239000002023 wood Substances 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
-
- 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
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0418—Positioning devices and stabilizing means for the props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0427—Shield operating devices; Hinges therefor
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- 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)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of continuous tunneling construction methods of bolting with wire mesh adapting to Complex Roof shape.Top plate metal mesh is joined after broken coal petrography to be placed in and is sticked up on the forestope of top, when going out clean coal, cash, the supporting power provided roof timbering, leg hydraulic jack and rack beams using the hydraulic support for adapting to top plate shape is uniformly supplied to top plate by small hydraulic jack;Simple to install is driven a vehicle, when driving face, which is tunneled, is more than fully-mechanized digging machine tail portion to supporting region, anchor pole permanent support is utilized to top plate, portion of side under the hydraulic support, hydraulic support at Demolition Construction permanent support position, it is put on the Simple traveling crane that do not dismantle and transports at roadway head, continuation sets up forward hydraulic support.The application actively gives complex-shaped top plate to provide uniform and stable supporting power everywhere, real-time supporting is carried out at the rear of driving face using transitional hydraulic bracket in tunneling process, broken rock and permanent support two procedures are separated and are constructed in different location, construction efficiency is improved.
Description
Technical field
The present invention relates to a kind of tunnelling construction technology, specifically a kind of bolting with wire mesh for adapting to Complex Roof shape connects
Continuous tunneling construction method, belongs to roadway construction technical field.
Background technology
Underground coal mine, Tunnel Engineering roadway construction in, traditional driving method is broken coal petrography → gib → forever
Long supporting → enter back into subsequent cycle, using such construction method, broken in same section of tunnel coal petrography and permanent support this two
Procedure is that needs sequence carries out, and the wherein permanent support time is longer, accounts for about the 60~70% of whole process total times, then
Broken rock activity time will be very short, typically less than 30%, be equivalent to it is shorter at the time in lane forward, caused by the result is that final whole
The speed of application of body tunnelling supporting is slower, less efficient;And the fully-mechanized digging machine for breaking coal petrography needs interval to be for a long time just switched on
Once, it is prodigious cost and the wasting of resources for large-scale ground, tunnel construction.On the other hand, in tunneling process
In, since the lithology of construction rock stratum has prodigious uncertain and variation, the top plate shape after driving is usually extremely complex, does not have
Rule, common hydraulic support can not provide uniform and stable supporting power everywhere to top plate, can not ensure the safety of roof timbering,
Worker constructs under the top plate prodigious psychological burden.
Invention content
In view of the above-mentioned problems of the prior art, the object of the present invention is to provide a kind of anchors adapting to Complex Roof shape
The continuous tunneling construction method of net supporting is ensureing that the while of breaking the coal time can improve the construction speed of whole tunnelling supporting
Degree, can promote fully-mechanized digging machine Homes Using TV, and can everywhere be provided to complex-shaped top plate in tunneling process uniform and stable
Supporting power ensures the safety of roof timbering.
To achieve the above object, the technical solution adopted by the present invention is:A kind of bolting with wire mesh adapting to Complex Roof shape
Continuous tunneling construction method, which is characterized in that include the following steps:
Step 1:Broken coal petrography:It is close in tunnel using explosion or fully-mechanized digging machine after tunneling direction breaks coal, cash in tunnel
The position of top plate rearward extend from driving face set up more it is parallel stick up top forestope, and top plate metal mesh is joined and is set
It pushes up on forestope, and is altered forward to the front end for sticking up top forestope in sticking up;The front end of top plate metal mesh is using wooden unit and top plate wedge
Tightly, when going out clean coal, cash, supporting is carried out to top plate using the hydraulic support for adapting to top plate shape, and will be after top plate metal mesh
End is placed on the hydraulic support set up;
Step 2:Set up transitional hydraulic bracket:After head-room reaches antenna height, since driving face backward
The parallel erection hydraulic supports of Fang Yici, unload the hydraulic support shipped from tunnel rear from Simple traveling crane, in each holder
Vertically-mounted leg hydraulic jack is distinguished at beam lower surface both ends, and distribution setting is multiple small between rack beams upper surface and top plate
Hydraulic jack first carries out fluid injection to leg hydraulic jack and jacks up rack beams, until the small hydraulic jack above rack beams
Apical grafting contacts top plate, then to not carrying out fluid injection boosting with the small hydraulic jack of top plate contact due to top plate injustice, makes top plate not
The small hydraulic jack top elongation at flat place and top plate contact, each small hydraulic jack put forward arch supporting power to top plate jointly, this
When leg hydraulic jack and rack beams provide supporting power be uniformly supplied to also by the small hydraulic jack in rack beams
Top plate ensure that the safety of roof timbering;
Step 3:Simple to install is driven a vehicle:Simple to install driving, the rack beams and crane beam used after hydraulic support has been set up
It is all i-beam structure, when installation, component Fast Installation crane beam is dismantled using connection Fast Installation in rack beams lower surface;
When specific operation, connection is first dismantled component with Fast Installation to be placed between rack beams and crane beam, and makes the length of crane beam
Direction is perpendicular with rack beams, and the lower flange of rack beams is placed in the upper surface of upper location-plate, and makes closing for upper location-plate surface
Lock tooth bites the side of lower flange, and movable pressing board is made to push down the other side of lower flange, and lock pin passes through the limit of movable pressing board both sides
Position ring, to make movable pressing board fix the other side of rack beams lower flange;Then the top flange of crane beam is placed in lower positioning
The lower surface of plate, and the locking tooth of lower positioning plate surface is made to bite the side of crane beam top flange, so that movable pressing board is pushed down upper limb
The other side of edge, lock pin passes through the spacing ring of movable pressing board both sides, to make movable pressing board fix the another of crane beam top flange
Side;After rack beams are connected with crane beam, the simple to install crane on crane beam, simple crane can be moved along crane beam
It is dynamic;
Step 4:Anchor shaft anchor cable permanent support:According to each cyclic advance of the general driving face of the lithology of top plate be 1~
3 hydraulic supports often tunnel a cyclic advance, accordingly set up 1~3 hydraulic support;When tunnel headwork towards
Preceding driving is to the erection supporting region of hydraulic support when being more than the reprinting drive end unit of fully-mechanized digging machine, the hydraulic pressure branch set up at first at this time
Erection supporting zone length between frame and the hydraulic support finally set up reaches 30~50m, is reprinting drive end unit rear at this time
Hydraulic support lower section to top plate, portion of side using anchor pole carry out permanent support, the permanent support in fully-mechanized digging machine tail portion will not be right
The driving of front driving face impacts, and realizes the synchronous parallel operation of permanent support and broken rock process;
Step 5:Dismantle Simple traveling crane and hydraulic support:After permanent support anchor bolt construction is good, dismountable construction is good permanent
Simple traveling crane, the hydraulic support of supporting position first remove the crane beam of permanent support position, due to crane beam when specific operation
Coupling between rack beams can be rapidly assembled and disassembled, and knock out the lock pin on lower positioning plate, start corresponding activity pressure
Plate can be such that crane beam is separated with Fast Installation dismounting component with coupling, then knock out the lock pin of upper location-plate, start corresponding work
Dynamic pressure plate can be such that connection Fast Installation dismounting component is separated with rack beams beam;Then the hydraulic pressure of permanent support position is removed again
Holder unloads small hydraulic jack and leg hydraulic jack at rack beams successively, and rack beams are put into what front was not dismantled
Transported on Simple traveling crane it is for use at the driving face position of tunnel front end, until be further continued for after driving face broken rock to side arm
If hydraulic support and Simple traveling crane;
Step 6:One is repeated the above steps to step 5, and so on, repeatedly until completing the height in entire tunnel after cycle
Fast tunneling construction.
The present invention can design the spacing of different hydraulic supports according to the different lithology of top plate when designing.Preferably, institute
It is 500mm~1000mm to state the spacing between each hydraulic support.
Preferably, the supporting power of the hydraulic support is the 80% of suspension roof support power.When the small hydraulic jack in rack beams
After top is by the enough pressure of above-mentioned requirements note, sufficient strength can be connect with top plate, ensure that the safety of top plate.
Preferably, the small hydraulic jack that the present invention uses is made of oil cylinder and the spring being sleeved on oil cylinder, the spring
Upper part and the top of oil cylinder tight fit and spring be higher than the top of oil cylinder;Small hydraulic jack is placed in rack beams and top plate
Between, when the fluctuating of top plate is little, oil cylinder need not extend, and the spring being sleeved at this time on oil cylinder directly bears the pressure of top plate
Power, spring, which is pressurized, provides reversed supporting power to top plate;When the big rise and fall of top plate, oil cylinder fluid injection is given, is pushed up after oil cylinder elongation
End directly and top plate contact, supporting power is provided for top plate, and spring, can in step 5 dismounting hydraulic support integrally by tension at this time
To provide power-assisted, for the retraction of oil cylinder convenient for the unloading of oil cylinder, when specific operation, the feather valve unloading high pressure of oil cylinder can be opened
Emulsion, oil cylinder bounce back to initial length under the drive of spring.Therefore the spring on oil cylinder can not only be used for supporting roof use,
But also as the retraction power of oil cylinder, and structure design is also fairly simple.
As a preferred scheme of the above method, when simple to install is driven a vehicle in step 3, rack beams and crane beam
After being connected, when top plate is unstable causes crane beam that cannot keep level, by adjusting between upper location-plate and lower positioning plate
Screw connection can adjust crane beam to horizontal position.Screw connection facilitates leveling and the normal use of Simple traveling crane.
Compared with the existing technology, the present invention has following advantage:
(1) broken coal process of the invention can be carried out at the same time from permanent support in the different sections in same tunnel, originally this
Two procedures are same place sequence constructions, and the previous process of construction that is in the same localities cannot construct another process, two
Person interacts, and can not be carried out at the same time, leverage speed of application;The application uses transient liquid simultaneously in tunneling process
Holder carries out real-time supporting at the rear of driving face, is separated by transition supporting broken rock and permanent support two procedures, two
A process is not constructed in same place, and each process individually arranges one group of construction personnel to construct, the heading driver in front end
Make face position and save more times for breaking coal petrography, broken rock can be continued, the fully-mechanized digging machine Homes Using TV of coal petrography is made brokenly to reach
80% or more, the different parts in tunnel and multigroup worker's synchronous construction ensure that increasing substantially for roadway construction work efficiency, pass through
Experiment, construction efficiency totally improve 40% or more.
(2) rack beams are first jacked up the progress fluid injection of leg hydraulic jack by the present invention, until the small liquid above rack beams
Pressure jack touch top plate give top plate provide supporting power, then to due to top plate injustice not with the small hydraulic jack of top plate contact
Fluid injection boosting is carried out, small hydraulic jack top at top plate injustice is made to extend and top plate contact, it is equally distributed each on top plate
A small hydraulic jack is cooperateed with puies forward arch supporting power to top plate, and the supporting power that at this moment leg hydraulic jack and rack beams provide also may be used
To be uniformly supplied to top plate by the small hydraulic jack on beam, three-dimensional supporting is formd from top to bottom, can adapt to prop up
The top plate for protecting complicated shape, the supporting power of active is provided for top plate, it is ensured that the safety of roof timbering eliminates construction personnel's
Psychological burden;
(3) present invention dismantles the installing and dismounting that component carries out crane beam using connection with Fast Installation, easy to operate quick
And connection is stablized, and more has compressed the construction time into one while ensuring safety;Top plate metal mesh, which joins to be placed in, sticks up the preceding spy in top
It avoids the rubble on top plate to inadvertently fall off on beam, alters forward to the front end for sticking up top forestope and using wooden unit and top plate wedge
Tightly, rear end is placed on the holder set up, and fixed form is firm, be ensure that the safety of the personnel in erect bracket, is not had
Rubble is fallen from top plate.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention;
Fig. 2 is the sectional view along A-A in Fig. 1;
Fig. 3 is the schematic diagram of the small hydraulic jack in the present invention;
Fig. 4 is that the coupled situation figure (omitting crane beam) of component is dismantled in the connection of the present invention with Fast Installation;
Fig. 5 is the left view (omitting rack beams) of Fig. 4;
Fig. 6 is that the stereogram of component is dismantled in the connection of the present invention with Fast Installation;
In figure, 1. tunnels, 11. top plates, 12. driving faces, 2. stick up top forestope, 3. hydraulic supports, 31. rack beams,
32. leg hydraulic jack, 33. small hydraulic jacks, 33a. oil cylinders, 33b. springs, 4. Simple traveling cranes, 41. crane beams, 42.
Connection dismantles component with Fast Installation, 42-1. upper location-plates, positioning plate under 42-2., and 42a. is latched tooth, 42b. movable pressing boards,
42c. lock pins, 42d. pressing plate shafts, 42e. screw connections, 42f. spacing rings, 5. anchor poles, 6. fully-mechanized digging machines, 7. elevating conveyors, 8. is portable
Pneumatic pumping plant.
Specific implementation mode
Invention is further described in detail with reference to the accompanying drawings and examples.
As shown, a kind of continuous tunneling construction method of bolting with wire mesh adapting to Complex Roof shape, includes the following steps:
Step 1:Broken coal petrography:In tunnel 1, using explosion or fully-mechanized digging machine after tunneling direction breaks coal, cash, leaned in tunnel 1
The position of nearly top plate 11 rearward extends from driving face 12 to be set up more parallel sticking up and pushes up forestope 2, and by top plate metal
Net, which joins to be placed in, to stick up on the forestope 2 of top, and alters forward to the front end for sticking up top forestope 2;The front end of top plate metal mesh is using wood
Block and 11 wedging of top plate carry out supporting using the hydraulic support 3 for adapting to 11 shape of top plate when going out clean coal, cash to top plate 11, and
The rear end of top plate metal mesh is placed on the hydraulic support 3 set up, ensures not having rubble in erection construction from top plate
11 fall, ensure the safety of personnel;
Step 2:Set up transitional hydraulic bracket:After when tunnel, 1 height reaches antenna height, since driving face 12
Rearward parallel erection hydraulic support 3 successively, unloads the hydraulic support 3 shipped from 1 rear of tunnel from Simple traveling crane 4,
Vertically-mounted leg hydraulic jack 32 is distinguished at each 31 lower surface both ends of rack beams, 31 upper surface of rack beams and top plate 11 it
Between distribution multiple small hydraulic jacks 33 are set, first carrying out fluid injection to leg hydraulic jack 32 jacks up rack beams 31, until
The small hydraulic jack 33 of 31 top of rack beams touches top plate 11 and provides supporting power to top plate 11, then to due to 11 injustice of top plate
The small hydraulic jack 33 not contacted with top plate 11 carries out fluid injection boosting, makes 33 top of small hydraulic jack at the injustice of top plate 11
Elongation is contacted with top plate 11, and each collaboration of small hydraulic jack 33 puies forward arch supporting power to top plate 11, at this moment leg hydraulic jack
32 and rack beams 31 provide supporting power be uniformly supplied to top plate 11 also by the small hydraulic jack 33 in rack beams 31, protect
The safety of 11 supporting of top plate is demonstrate,proved;
Step 3:Simple to install is driven a vehicle:Simple to install driving 4, the rack beams that the present invention uses after hydraulic support 3 has been set up
31 and crane beam 41 be all i-beam structure, when installation, component is dismantled using connection Fast Installation in 31 lower surface of rack beams
42 Fast Installation crane beams 41;It includes upper location-plate disposed in parallel that the connection that the present invention uses dismantles component 42 with Fast Installation
42-1 and lower positioning plate 42-2, the upper location-plate 42-1 is connected with lower positioning plate 42-2 by screw connection 42e, and upper positioning
The length direction of plate 42-1 and lower positioning plate 42-2 are mutually perpendicular to, under the upper surface of upper location-plate 42-1 and lower positioning plate 42-2
Surface is respectively equipped with fixing and locking mechanism, and the fixation on the fixing and locking mechanism and lower positioning plate 42-2 on upper location-plate 42-1
Retaining mechanism intersects setting, and the fixing and locking mechanism includes the locking tooth 42a being oppositely arranged and movable pressing board 42b, institute
It states movable pressing board 42b to be hinged on upper location-plate 42-1 or lower positioning plates 42-2 by pressing plate shaft 42d, a lock pin 42c, which is passed through, to live
Movable pressing board 42b is pressed on upper location-plate 42-1 or lower positioning plates 42-2 by the spacing ring 42f of the both sides dynamic pressure plate 42b.Specific behaviour
When making, first connection Fast Installation dismounting component 42 is placed between rack beams 31 and crane beam 41, and make the length of crane beam 41
It spends direction and rack beams 31 is perpendicular, the lower flange of rack beams 31 is placed in the upper surface of upper location-plate 42-1, and make positioning
The locking tooth 42a on the surfaces plate 42-1 bites the side of lower flange, and movable pressing board 42b is made to push down the other side of lower flange, lock pin
42c passes through the spacing ring 42f of the both sides movable pressing board 42b, to make movable pressing board 42b fix the another of 31 lower flange of rack beams
Side;Then the top flange of crane beam 41 is placed in the lower surface of lower positioning plate 42-2, and make the locking on the surfaces lower positioning plate 42-2
Tooth 42a bites the side of 41 top flange of crane beam, and movable pressing board 42b is made to push down the other side of top flange, and lock pin 42c passes through activity
The spacing ring 42f of the both sides pressing plate 42b, to make movable pressing board 42b fix the other side of 41 top flange of crane beam;Rack beams 31
After being connected with crane beam 41, the simple to install crane 43 on crane beam 41, simple crane 43 can be moved along crane beam 41;
Step 4:Anchor shaft anchor cable permanent support:According to the lithology of top plate 11,12 each cyclic advance of general driving face
(broken coal petrography length every time) is 1~3 hydraulic support, i.e., often tunnels a cyclic advance, accordingly set up 1~3 hydraulic support
3;When the erection supporting region that the driving face 12 in tunnel 1 tunnels forward to hydraulic support 3 has been more than the elevating conveyor of fully-mechanized digging machine 6
When 7 tail portion (there are enough installation spaces when anchor pole is constructed in the position more than 7 tail portion of elevating conveyor, will not be influenced by fully-mechanized digging machine,
Nor affect on the headwork of fully-mechanized digging machine), between the hydraulic support 3 set up at first at this time and the hydraulic support finally set up 3
It sets up supporting zone length and reaches 30~50m, at this time in the lower section of the hydraulic support 3 at 7 tail portion rear of elevating conveyor to top plate 11, side
Portion carries out permanent support using anchor pole 5, and the permanent support in fully-mechanized digging machine tail portion will not be to the pick of 12 position of front driving face
Into impacting, the synchronous parallel operation of permanent support and broken rock process is realized, working efficiency is improved;
Step 5:Dismantle Simple traveling crane and hydraulic support:After the construction of permanent support anchor pole 5 is good, dismountable construction is good forever
Simple traveling crane 4, the hydraulic support 3 of long supporting position first remove the crane beam 41 of permanent support position when specific operation, due to
Coupling between crane beam 41 and rack beams 31 can be rapidly assembled and disassembled, and knock out the lock pin 42c on lower positioning plate 42-2,
Start corresponding movable pressing board 42b can make crane beam 41 with couple with Fast Installation dismounting component 42 separate, then knock out it is fixed
The lock pin 42c of position plate 42-1, connection Fast Installation dismounting component 42 and rack beams can be made by starting corresponding movable pressing board 42b
31 beams separate;Then the hydraulic support 3 of permanent support position is removed again, unloads the small hydraulic jack 33 at rack beams 31 successively
With leg hydraulic jack 32, rack beams 31 are put into the heading driver that 1 front end of tunnel is transported on the Simple traveling crane 4 that front is not dismantled
Make it is for use at 12 position of face, until be further continued for setting up hydraulic support 3 and Simple traveling crane 4 forward after 12 broken rock of driving face;
Step 6:One is repeated the above steps to step 5, and so on, repeatedly until completing entire tunnel 1 after cycle
High speed tunneling construction.
Portable pneumatic pumping plant 8 in the present invention on fully-mechanized digging machine 6 can be the small hydraulic jack 33 in rack beams 31, leg
Portion's hydraulic jack 32 provides power, and the emulsion hydraulic which provides is up to 28MPa.
Preferably, the small hydraulic jack 33 that the present invention uses can be by oil cylinder 33a and the spring being sleeved on oil cylinder 33a
33b is formed, and the upper part of the spring 33b is higher than the top of oil cylinder 33a with the top of oil cylinder 33a tight fits and spring 33b.It will
Small hydraulic jack 33 is placed between rack beams 31 and top plate 11, and when the fluctuating of top plate 11 is little, oil cylinder 33a need not stretch
Long, the spring 33b being sleeved at this time on oil cylinder 33a directly bears the pressure of top plate 11, and spring 33b is pressurized to be provided reversely to top plate 11
Supporting power;When the big rise and fall of top plate 11, oil cylinder 33a fluid injections are given, top directly connects with top plate 11 after oil cylinder 33a elongations
It touches, supporting power is provided for top plate 11, spring 33b can be oil cylinder when step 5 dismantles hydraulic support integrally by tension at this time
The retraction of 33a provides power-assisted, convenient for the unloading of oil cylinder 33a, and when specific operation, the feather valve unloading that can open oil cylinder 33a is high
Emulsion, oil cylinder 33a is pressed to bounce back to initial length under the drive of spring 33b.Therefore the spring 33b on oil cylinder 33a both may be used
It is used as supporting roof, but also as the retraction power of oil cylinder 33a, and structure design is also fairly simple.
As a preferred scheme of the above method, in step 3 when simple to install driving 4, rack beams 31 and driving
After beam 41 is connected, when top plate 11 is unstable causes crane beam 41 that cannot keep level, by adjust upper location-plate 42-1 and
Screw connection 42e between lower positioning plate 42-2 can adjust crane beam 41 to horizontal position, and screw connection 42e is facilitated simply
The leveling of driving 4 and normal use.
Claims (5)
1. a kind of continuous tunneling construction method of bolting with wire mesh adapting to Complex Roof shape, which is characterized in that include the following steps:
Step 1:Broken coal petrography:In tunnel (1), using explosion or fully-mechanized digging machine after tunneling direction breaks coal, cash, leaned in tunnel (1)
The position of nearly top plate (11) rearward extends parallel the sticking up of more of erection from driving face (12) and pushes up forestope (2), and will top
Sheetmetal net, which joins to be placed in, to stick up on top forestope (2), and alters forward to the front end for sticking up top forestope (2);Top plate metal mesh
Front end is using wooden unit and top plate (11) wedging, right using the hydraulic support (3) for adapting to top plate (11) shape when going out clean coal, cash
Top plate (11) carries out supporting, and the rear end of top plate metal mesh is placed on the hydraulic support (3) set up;
Step 2:Set up transitional hydraulic bracket:After tunnel (1) highly reaches antenna height, since driving face (12)
Rearward parallel erection hydraulic support (3) successively, the hydraulic support (3) shipped from tunnel (1) rear from Simple traveling crane (4)
It unloads, vertically-mounted leg hydraulic jack (32) is distinguished at each rack beams (31) lower surface both ends, in rack beams (31)
Multiple small hydraulic jacks (33) are arranged in distribution between surface and top plate (11), first carry out fluid injection to leg hydraulic jack (32)
Rack beams (31) are jacked up, until the small hydraulic jack (33) above rack beams (31) touches top plate (11), then to due to
The small hydraulic jack (33) that top plate (11) injustice is not contacted with top plate (11) carries out fluid injection boosting, makes at top plate (11) injustice
Small hydraulic jack (33) top elongation is contacted with top plate (11), and each small hydraulic jack (33) carries arch to top plate (11) jointly
Supporting power, the supporting power that at this moment leg hydraulic jack (32) and rack beams (31) provide is also by the small liquid in rack beams (31)
Pressure jack (33) is uniformly supplied to top plate (11), ensure that the safety of top plate (11) supporting;
Step 3:Simple to install is driven a vehicle:Hydraulic support (3) set up after simple to install driving (4), the rack beams used (31) and
Crane beam (41) is all i-beam structure, and when installation, component is dismantled using connection Fast Installation in rack beams (31) lower surface
(42) Fast Installation crane beam (41);When specific operation, connection is first dismantled into component (42) with Fast Installation and is placed in rack beams
(31) between crane beam (41), and keep the length direction of crane beam (41) and rack beams (31) perpendicular, by rack beams (31)
Lower flange be placed in the upper surface of upper location-plate (42-1), and the locking tooth (42a) on the surface upper location-plate (42-1) is made to bite down
The side on the edge of a wing, and movable pressing board (42b) is made to push down the other side of lower flange, lock pin (42c) is across the both sides movable pressing board (42b)
Spacing ring (42f), to make movable pressing board (42b) fix the other side of rack beams (31) lower flange;Then by crane beam
(41) top flange is placed in the lower surface of lower positioning plate (42-2), and the locking tooth (42a) on the surface lower positioning plate (42-2) is made to sting
The firmly side of crane beam (41) top flange, makes movable pressing board (42b) push down the other side of top flange, and lock pin (42c) passes through activity
The spacing ring (42f) of the both sides pressing plate (42b), to make movable pressing board (42b) fix the other side of crane beam (41) top flange;
After rack beams (31) are connected with crane beam (41), the simple to install crane (43) on crane beam (41), simple crane (43) is i.e.
It can be mobile along crane beam (41);
Step 4:Anchor shaft anchor cable permanent support:According to the general driving face of lithology (12) each cyclic advance of top plate (11)
For 1~3 hydraulic support, i.e., a cyclic advance is often tunneled, accordingly sets up 1~3 hydraulic support (3);When the pick of tunnel (1)
The erection supporting region tunneled forward to hydraulic support (3) into working face (12) has been more than elevating conveyor (7) tail portion of fully-mechanized digging machine (6)
When, the erection supporting zone length between the hydraulic support (3) set up at first at this time and the hydraulic support (3) finally set up reaches
30~50m utilizes anchor pole (5) in the lower section of the hydraulic support (3) at elevating conveyor (7) tail portion rear to top plate (11), portion of side at this time
Permanent support is carried out, the permanent support in fully-mechanized digging machine tail portion will not impact the driving of front driving face (12), real
The synchronous parallel operation of permanent support and broken rock process is showed;
Step 5:Dismantle Simple traveling crane and hydraulic support:After permanent support anchor pole (5) construction is good, dismountable construction is good permanent
Simple traveling crane (4), the hydraulic support (3) of supporting position first remove the crane beam (41) of permanent support position when specific operation,
Since coupling between crane beam (41) and rack beams (31) can be rapidly assembled and disassembled, knock out on lower positioning plate (42-2)
Lock pin (42c), start corresponding movable pressing board (42b) can make crane beam (41) and couple with Fast Installation dismantle component
(42) it separates, then knocks out the lock pin (42c) of upper location-plate (42-1), starting corresponding movable pressing board (42b) can be such that connection uses
Fast Installation dismounting component (42) is separated with rack beams (31) beam;Then the hydraulic support (3) for removing permanent support position again, according to
Rack beams (31) are put into front by the small hydraulic jack (33) at secondary unloading rack beams (31) and leg hydraulic jack (32)
Transported on the Simple traveling crane (4) that do not dismantle it is for use at driving face (12) position of tunnel (1) front end, until driving face
(12) it is further continued for setting up hydraulic support (3) and Simple traveling crane (4) forward after broken rock;
Step 6:One is repeated the above steps to step 5, and so on, repeatedly until completing the height of entire tunnel (1) after cycle
Fast tunneling construction.
2. the bolting with wire mesh continuous tunneling construction method according to claim 1 for adapting to Complex Roof shape, feature exist
In the spacing between each hydraulic support (3) is 500mm~1000mm.
3. the bolting with wire mesh continuous tunneling construction method according to claim 1 for adapting to Complex Roof shape, feature exist
In the supporting power of the hydraulic support (3) is the 80% of anchor pole (5) supporting power.
4. the bolting with wire mesh continuous tunneling construction method according to claim 1 for adapting to Complex Roof shape, feature exist
In the small hydraulic jack (33) is made of oil cylinder (33a) and the spring (33b) being sleeved on oil cylinder (33a), the spring
The upper part of 33b is higher than the top of oil cylinder (33a) with the top of oil cylinder (33a) tight fit and spring 33b;By small hydraulic jack
(33) after being placed between rack beams (31) and top plate (11), when the fluctuating of top plate (11) is little, oil cylinder 33a need not extend,
The spring (33b) being sleeved at this time on oil cylinder (33a) directly bears the pressure of top plate 11, and spring 33b is pressurized to be provided instead to top plate 11
To supporting power;When the big rise and fall of top plate 11, give oil cylinder 33a fluid injections, after oil cylinder 33a elongation top directly with top plate (11)
Contact provides supporting power for top plate 11, and spring 33b can be oil when step 5 dismantles hydraulic support integrally by tension at this time
The retraction of cylinder (33a) provides power-assisted, convenient for the unloading of oil cylinder 33a, when specific operation, can open the feather valve of oil cylinder (33a)
High-pressure emulsion is unloaded, oil cylinder (33a) bounces back to initial length under the drive of spring (33b).
5. the bolting with wire mesh continuous tunneling construction method according to claim 1 for adapting to Complex Roof shape, feature exist
In in step 3 when simple to install driving (4), after rack beams (31) are connected with crane beam (41), when top plate (11) injustice
When surely causing crane beam (41) that level cannot be kept, pass through the connection adjusted between upper location-plate (42-1) and lower positioning plate (42-2)
Crane beam (41) can be adjusted to horizontal position by connecing screw rod (42e).
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| CN201810293865.XA CN108691545B (en) | 2018-03-30 | 2018-03-30 | A kind of continuous tunneling construction method of bolting with wire mesh adapting to Complex Roof shape |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266367A (en) * | 2021-05-31 | 2021-08-17 | 太原理工大学 | Automatic hard roof roadway hydraulic rod roof cutting method |
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| CN108194114A (en) * | 2018-02-06 | 2018-06-22 | 中煤能源研究院有限责任公司 | Roadway head protects top and anchor bolt construction integrated apparatus temporarily |
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| RU1838620C (en) * | 1991-12-06 | 1993-08-30 | Potapenko Vyacheslav A | Powered drift support |
| CN103195457A (en) * | 2013-04-15 | 2013-07-10 | 辽宁天安矿山科技有限公司 | Supporting method for roadway fully-mechanized drivage operation without withdrawal of roadheader |
| CN103382844A (en) * | 2013-07-15 | 2013-11-06 | 郑东风 | Temporary support and permanent support parallel operation excavating technology and equipment for tracked hydraulic combined support |
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| CN105971628A (en) * | 2016-03-31 | 2016-09-28 | 中国矿业大学(北京) | Temporary supporting method for tunneled roadway |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266367A (en) * | 2021-05-31 | 2021-08-17 | 太原理工大学 | Automatic hard roof roadway hydraulic rod roof cutting method |
| CN113266367B (en) * | 2021-05-31 | 2024-05-14 | 太原理工大学 | Automatic roof cutting method for hydraulic rod of hard roof roadway |
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| CN108691545B (en) | 2019-06-28 |
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