CN110359939B - Alternate support type comprehensive tunnel temporary support equipment and application thereof - Google Patents
Alternate support type comprehensive tunnel temporary support equipment and application thereof Download PDFInfo
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- CN110359939B CN110359939B CN201910788157.8A CN201910788157A CN110359939B CN 110359939 B CN110359939 B CN 110359939B CN 201910788157 A CN201910788157 A CN 201910788157A CN 110359939 B CN110359939 B CN 110359939B
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- hydraulic cylinder
- bottom plate
- support
- temporary support
- guard plate
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- 238000000034 method Methods 0.000 claims description 16
- 230000005641 tunneling Effects 0.000 claims description 10
- 238000009412 basement excavation Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 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
- 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
- E21D23/0086—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor in galleries
- E21D23/0095—Temporary supports at the driving front
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- 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
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- 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
-
- 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to an alternate support type comprehensive tunnel temporary support device and application thereof, comprising a bottom plate telescopic system, a temporary support mechanism, a driving hydraulic cylinder and a hydraulic station; the two sides of the bottom plate telescopic system are provided with bottom plate supporting hydraulic cylinders, the two sides of the temporary support mechanism are provided with top guard plate supporting hydraulic cylinders, and the hydraulic station provides working oil; the temporary support mechanism is connected to the bottom plate telescopic system through a sliding device, two ends of the driving hydraulic cylinder are respectively connected with the bottom plate telescopic system and the temporary support mechanism, and the temporary support mechanism is conveyed to the empty roof area through the alternate support of the driving hydraulic cylinder, the bottom plate supporting hydraulic cylinder and the roof guard plate supporting hydraulic cylinder. The temporary support equipment provided by the invention has the advantages that the structural design is scientific and reasonable, the operation and the use are convenient, the temporary support mechanism which is alternately supported at the top of a roadway is adopted, the interference of a heading machine on the operation of the temporary support mechanism can be avoided, and workers have a wider operation space under the temporary support mechanism.
Description
Technical Field
The invention relates to an alternate support type fully-mechanized roadway temporary support device and application thereof, and belongs to the technical field of mine roadway support devices.
Background
At present, anchor bolt support is generally adopted as permanent support in the process of fully-mechanized coal mine tunnel tunneling in China, and temporary support is needed before anchor bolt support is carried out in order to prevent roof of a tunneling working face from falling. The current temporary support of the coal mine generally adopts a plurality of front cantilever beams to hang on a roof supported anchor rod along the roadway direction to extend to the empty roof area, plays a role in protecting the roof, and prevents personal casualties caused by roof fall. The support mode has the defects that: (1) The front cantilever has no initial supporting force on the support of the hollow roof area, and the safety and reliability are poor; (2) The operation process is complex, the manual operation is relied on, the supporting time is long, and the temporary supporting efficiency is low; (3) Operators must enter the empty roof area to carry out erection operation, and great potential safety hazards exist.
The Chinese patent document CN102128040B discloses hydraulic stepping type advanced support equipment, provides hydraulic stepping type support equipment for a working face of a heading machine in coal mine production, adopts a hydraulic stepping type advancing and combining method of a woven net structure, solves the problems that the prior coal mine work is limited by a permissible empty jacking distance and only one or two anchor is excavated, realizes one excavating and multiple anchors, namely, anchors of a plurality of rows of anchors are anchored simultaneously after a plurality of working procedures are tunneled, greatly improves the tunnelling efficiency, and provides safety protection for the worker operation. The support mode has the following defects: the whole support equipment of stand floor support, occupation space is not suitable for the further tunneling work of entry driving machine, and after the temporary support is accomplished, because the interference of entry driving machine cutting head and cantilever section, the workman is extremely limited in the anchor operation such as drilling, beating stock under temporary support device, and the workman's operation of being inconvenient for.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an alternate support type temporary support device for a fully-mechanized excavating roadway.
The invention also provides an operation method of the alternately supported fully-mechanized roadway temporary support equipment.
The technical scheme of the invention is as follows:
An alternate support type comprehensive tunnel temporary support device comprises a bottom plate telescopic system, a temporary support mechanism, a driving hydraulic cylinder and a hydraulic station; the two sides of the bottom plate telescopic system are provided with bottom plate supporting hydraulic cylinders, the two sides of the temporary support mechanism are provided with top guard plate supporting hydraulic cylinders, and the hydraulic station provides working oil;
The temporary support mechanism is connected to the bottom plate telescopic system through a sliding device, two ends of the driving hydraulic cylinder are respectively connected with the bottom plate telescopic system and the temporary support mechanism, and the temporary support mechanism is conveyed to the empty roof area through the alternate support of the driving hydraulic cylinder, the bottom plate supporting hydraulic cylinder and the roof guard plate supporting hydraulic cylinder.
Preferably, the bottom plate telescopic system comprises a bottom plate and a driving hydraulic cylinder hinged support I, the four bottom plate supporting hydraulic cylinders are symmetrically connected to two sides of the bottom plate, the tail end of a piston rod of each bottom plate supporting hydraulic cylinder is connected with a bottom plate supporting hydraulic cylinder base, and the driving hydraulic cylinder hinged support I is installed in the bottom plate.
Preferably, the bottom plate is a truss structure.
Preferably, the temporary support mechanism comprises a top guard plate, a driving hydraulic cylinder hinged support II, a top guard plate supporting hydraulic cylinder base, a hydraulic supporting leg, a supporting leg base, a top guard plate hinged support I, a hydraulic supporting leg hinged support, a top guard plate hinged support II and an extension hydraulic cylinder; the four top guard plate supporting hydraulic cylinders are symmetrically connected to two sides of the top guard plate, and the tail ends of piston rods of the top guard plate supporting hydraulic cylinders are connected with a top guard plate supporting hydraulic cylinder base; the top guard plate hinge brackets I are arranged on four corners of the top guard plate, the upper ends of the hydraulic support legs are hinged with the top guard plate hinge brackets I, and the lower ends of the hydraulic support legs are connected with the support leg base; the hydraulic support leg hinge support is arranged on the upper portion of the hydraulic support leg, the top guard plate hinge support II is arranged on two sides of the top guard plate, two ends of the stretching hydraulic cylinder are hinged to the hydraulic support leg hinge support and the top guard plate hinge support II respectively, and the driving hydraulic cylinder hinge support II is arranged at the bottom of the top guard plate.
Preferably, two ends of the driving hydraulic cylinder are hinged with the driving hydraulic cylinder hinged support I and the driving hydraulic cylinder hinged support II respectively.
Preferably, the sliding device comprises a linear guide rail and a sliding block, wherein the linear guide rail is arranged on the upper part of the bottom plate, and the sliding block is connected to the bottom of the top guard plate and is arranged on the linear guide rail.
Preferably, two linear guide rails are arranged on the bottom plate in parallel, and two sliding blocks are arranged on each linear guide rail in a matched mode.
Preferably, the linear guide rail is mounted on the upper surface of the bottom plate through screws.
The operation method of the alternate support type comprehensive tunnel temporary support equipment comprises the steps that a temporary support mechanism and a bottom plate telescopic system are in a contracted state in advance, the whole set of temporary support equipment is lifted to a position, close to a top plate, of the upper part of a permanent support tunnel of a tunneling working face by using lifting equipment, piston rods of four bottom plate support hydraulic cylinders are pushed out and supported on two side walls of the comprehensive tunnel, and the whole set of temporary support equipment is supported on the top of the comprehensive tunnel; after the excavation work of the heading machine is completed, an empty top area is formed at the cutting head and the cantilever section of the heading machine, and temporary support operation is started, and the method comprises the following steps:
(1) The hydraulic cylinder is driven to work, the temporary support mechanism is pushed to move forwards, after the temporary support mechanism moves in place, the top guard plate supports the hydraulic cylinder to work, piston rods of the top guard plate supports the hydraulic cylinder to push out and support the piston rods on two side walls of a roadway, and temporary support equipment is supported on the top of the roadway;
(2) Then the bottom plate supporting hydraulic cylinder piston rod is retracted, the hydraulic cylinder piston rod is driven to retract to drive the bottom plate telescopic system to retract, then the bottom plate supporting hydraulic cylinder starts to work, the bottom plate supporting hydraulic cylinder piston rod is pushed out and supported on two side walls of a roadway, and the top guard plate supporting hydraulic cylinder piston rod is retracted;
(3) Repeating the steps (1) - (2) until the temporary support equipment is positioned below the empty roof area, and the top guard plate supports the piston rods of the hydraulic cylinders to push out and support the piston rods on the two side walls of the roadway, and drives the hydraulic cylinders to be in a piston rod push-out state;
(4) Then the stretching hydraulic cylinder acts to drive the hydraulic supporting leg to stand up;
(5) The hydraulic support leg starts to work after standing up, so that the support leg base is grounded, the top guard plate supports the piston rod of the hydraulic cylinder to retract, and the hydraulic support leg continues to work until the top guard plate is connected with the top.
The invention has the beneficial effects that:
1) The invention uses four bottom plate supporting hydraulic cylinders and four top guard plate supporting hydraulic cylinders to alternately support the side wall of a roadway, forms sliding connection between a bottom plate telescopic system and a temporary support mechanism by using a linear guide rail and a sliding block, and is driven by a driving hydraulic cylinder to alternately advance the temporary support mechanism and the bottom plate telescopic system, and sends the temporary support mechanism to an empty top area of a roadway working surface; the hydraulic support leg is driven to stand up by the stretching hydraulic cylinder, the top guard plate is connected with the roadway top plate through the stretching movement of the hydraulic support leg piston rod, the preliminary bracing force is applied to the top plate through the oil pressure of the hydraulic support leg, temporary support is completed, the heading machine exits from the area where the temporary support mechanism is located, and workers can anchor and protect the safety area established at the bottom of the temporary support mechanism.
2) The alternately supported type comprehensive tunnel temporary support equipment is scientific and reasonable in structural design and convenient to operate and use, and the temporary support mechanism which is alternately supported at the top of the tunnel is designed, so that the interference of a heading machine on the operation of the temporary support mechanism can be avoided, and workers have a wider operation space under the temporary support mechanism.
Drawings
Fig. 1 is a schematic view of the working state of the temporary support equipment of the invention.
Fig. 2 is a schematic view of the original state structure of the temporary support device of the present invention.
Fig. 3 is a schematic structural view of the hydraulic cylinder supported on the side wall of the roadway and the temporary support mechanism after moving forward.
Fig. 4 is a schematic structural view of the top guard plate supporting cylinder supported on the side wall of the roadway and the bottom plate supporting cylinder after being retracted.
Fig. 5 is a schematic view of the structure of the base plate telescoping system after retraction.
In the figure: the hydraulic support comprises a bottom plate expansion system 1, a bottom plate 1, a linear guide rail 1-2, a bottom plate supporting hydraulic cylinder 1-3, a bottom plate supporting hydraulic cylinder base 1-4, a driving hydraulic cylinder hinging bracket I1-5, a temporary support mechanism 2, a top guard plate 2-1, a driving hydraulic cylinder hinging bracket II 2-2, a top guard plate supporting hydraulic cylinder 2-3, a top guard plate supporting hydraulic cylinder base 2-4, a hydraulic support leg 2-5, a support leg base 2-6, a top guard plate hinging bracket I2-7, a hydraulic support leg hinging bracket 2-8, a top guard plate hinging bracket II 2-9, a stretching hydraulic cylinder 2-10, a sliding block 2-11, a driving hydraulic cylinder 3 and a hydraulic station 4.
Detailed Description
The invention will now be further illustrated by way of example, but not by way of limitation, with reference to the accompanying drawings.
Example 1:
As shown in fig. 1, the embodiment provides an alternate support type temporary support device for a fully-mechanized excavating roadway, which comprises a bottom plate telescopic system 1, a temporary support mechanism 2, a driving hydraulic cylinder 3 and a hydraulic station 4; four bottom plate supporting hydraulic cylinders 1-3 are arranged on two sides of a base of the bottom plate telescopic system 1, and the whole set of temporary support equipment can be supported on the top of the fully-mechanized roadway through pushing out of piston rods of the bottom plate supporting hydraulic cylinders 1-3 and supporting on two side walls of the fully-mechanized roadway; the temporary support mechanism 2 is connected to the bottom plate telescopic system 1 through a sliding device, and the temporary support mechanism 2 is conveyed to an empty top area in front of the heading machine through the sliding device on the bottom plate telescopic system 1 and the driving hydraulic cylinder 3; four top guard plate supporting hydraulic cylinders 2-3 are arranged on two sides of the temporary support mechanism 2, piston rods of the top guard plate supporting hydraulic cylinders 2-3 are pushed out and supported on two side walls of the comprehensive tunneling roadway, and the whole set of temporary support equipment can be supported on the top of the comprehensive tunneling roadway.
The bottom plate telescopic system 1 comprises a bottom plate 1-1 and a driving hydraulic cylinder hinged support I1-5; the bottom plate support hydraulic cylinder 1-3 is connected to two sides of the bottom plate 1-1 through an upper flange, and a bottom plate support hydraulic cylinder base 1-4 is welded at the tail end of a piston rod of the bottom plate support hydraulic cylinder 1-3. The bottom plate 1-1 is of a truss structure, a sliding device is convenient to install, and the driving hydraulic cylinder hinge support I1-5 is welded in the truss structure.
The temporary support mechanism 2 comprises a top guard plate 2-1, a driving hydraulic cylinder hinged support II 2-2, hydraulic support legs 2-5, support leg bases 2-6, a top guard plate hinged support I2-7, a hydraulic support leg hinged support 2-8, a top guard plate hinged support II 2-9 and an extension hydraulic cylinder 2-10; the top guard plate supporting hydraulic cylinder 2-3 is connected to two sides of the top guard plate 2-1 in an upper flange mode, and a top guard plate supporting hydraulic cylinder base 2-4 is welded at the tail end of a piston rod of the top guard plate supporting hydraulic cylinder 2-3; the hydraulic support leg hinge bracket 2-8 is welded at a certain distance from the upper end of the hydraulic support leg 2-5, the lower end of the stretching hydraulic cylinder 2-10 is hinged with the hydraulic support leg hinge bracket 2-8, the upper end of the stretching hydraulic cylinder 2-10 is hinged with the top guard plate hinge bracket II 2-9, and the top guard plate hinge bracket II 2-9 is welded on the top guard plate 2-1.
The temporary support mechanism 2 adopts a foldable design, the hydraulic support legs 2-5 can be folded or unfolded by stretching the hydraulic cylinders 2-10, and the temporary support mechanism is unfolded when working and folded when not working.
The base plate telescopic system 1 and the temporary support mechanism 2 are connected through a sliding device, and the sliding device comprises a linear guide rail 1-2 and a sliding block 2-11. The linear guide rail 1-2 is connected to the bottom plate 1-1 through screws, the sliding block 2-11 is connected to the bottom of the top guard plate 2-1 through screws, and the linear movement of the temporary support mechanism 2 on the linear guide rail 1-2 is realized through driving the hydraulic cylinder 3. Two linear guide rails 1-2 are arranged on the upper surface of the bottom plate 1-1 in parallel, and two sliding blocks 2-11 are arranged on each linear guide rail 1-2 in a matched mode. The top guard plate 2-1 is arranged on the four sliding blocks 2-11 at two sides, so that the stability in the moving process can be ensured.
The bottom plate 1-1 is welded with the driving hydraulic cylinder hinged support I1-5, the bottom of the top guard plate 2-1 is welded with the driving hydraulic cylinder hinged support II 2-2, and two ends of the driving hydraulic cylinder 3 are hinged on the driving hydraulic cylinder hinged support I1-5 and the driving hydraulic cylinder hinged support II 2-2 in a mode of upper and lower earrings.
The bottoms of two sides of the top guard plate 2-1 are respectively welded with two top guard plate hinge brackets I2-7 and two top guard plate hinge brackets II 2-9 which are symmetrically distributed. The four corners of the bottom of the top guard plate 2-1 are respectively provided with a hydraulic supporting leg 2-5, the form of earrings above a cylinder barrel of the hydraulic supporting leg 2-5 is hinged with a top guard plate hinging bracket I2-7, and the bottom of a piston rod of the hydraulic supporting leg 2-5 is provided with a supporting leg base 2-6.
A hydraulic station 4 is arranged on the base plate 1-1. Working oil is supplied to all hydraulic cylinders and the like through the hydraulic station 4.
Example 2:
As shown in fig. 2-5, in a working method of the alternate support type temporary support device for the fully-mechanized roadway, as shown in embodiment 1, the temporary support mechanism 2 and the bottom plate telescopic system 1 are in a contracted state in advance, the whole temporary support device is lifted by using a lifting device until the upper part of the permanently-supported roadway is close to a top plate by a tunneling working face, piston rods of four bottom plate support hydraulic cylinders 1-3 are pushed out and supported on two side walls of the fully-mechanized roadway, and the whole temporary support device is supported on the top of the fully-mechanized roadway; after the excavation work of the heading machine is completed, an empty top area is formed at the cutting head and the cantilever section of the heading machine, and temporary support operation is started, and the method comprises the following steps:
(1) The hydraulic cylinder 3 is driven to work, the temporary support mechanism 2 is pushed to move forwards along the linear guide rail 1-2, after the temporary support mechanism 2 moves in place, the top guard plate supporting hydraulic cylinder 2-3 works, the piston rod of the top guard plate supporting hydraulic cylinder 2-3 is pushed out and supported on the two side walls of a roadway, and the whole set of temporary support equipment is supported on the top of the roadway;
(2) The piston rod of the bottom plate supporting hydraulic cylinder 1-3 is retracted, the piston rod of the hydraulic cylinder 3 is driven to retract to drive the bottom plate telescopic system 1 to retract, after the action is completed, the bottom plate supporting hydraulic cylinder 1-3 works, the piston rod of the bottom plate supporting hydraulic cylinder 1-3 is pushed out and supported on the two side walls of a roadway, and the piston rod of the top guard plate supporting hydraulic cylinder 2-3 is retracted;
(3) Repeating the steps (1) - (2) until the temporary support equipment is positioned below the empty roof area, and the piston rods of the supporting hydraulic cylinders 2-3 of the roof guard plate are pushed out and supported on the two side walls of the roadway, and the driving hydraulic cylinders 3 are in a piston rod pushing-out state;
(4) Then the four stretching hydraulic cylinders 2-10 act to drive the hydraulic supporting legs 2-5 to stand up;
(5) The four hydraulic support legs 2-5 start to work after standing up, so that the support leg bases 2-6 are grounded; the piston rod of the top guard plate supporting hydraulic cylinder 2-3 is retracted, and the hydraulic supporting leg 2-5 continues to work until the top guard plate 2-1 is propped.
Claims (5)
1. An operation method of an alternate support type comprehensive tunnel temporary support device comprises a bottom plate telescopic system, a temporary support mechanism, a driving hydraulic cylinder and a hydraulic station; the two sides of the bottom plate telescopic system are provided with bottom plate supporting hydraulic cylinders, the two sides of the temporary support mechanism are provided with top guard plate supporting hydraulic cylinders, and the hydraulic station provides working oil;
the temporary support mechanism is connected to the bottom plate telescopic system through a sliding device, two ends of the driving hydraulic cylinder are respectively connected with the bottom plate telescopic system and the temporary support mechanism, and the temporary support mechanism is conveyed to the empty roof area through the alternate support of the driving hydraulic cylinder, the bottom plate supporting hydraulic cylinder and the roof guard plate supporting hydraulic cylinder;
The bottom plate telescopic system comprises a bottom plate and a driving hydraulic cylinder hinged support I, four bottom plate supporting hydraulic cylinders are symmetrically connected to two sides of the bottom plate, the tail end of a piston rod of each bottom plate supporting hydraulic cylinder is connected with a bottom plate supporting hydraulic cylinder base, and the driving hydraulic cylinder hinged support I is arranged in the bottom plate;
The temporary support mechanism comprises a top guard plate, a driving hydraulic cylinder hinged support II, a top guard plate supporting hydraulic cylinder base, a hydraulic support leg, a support leg base, a top guard plate hinged support I, a hydraulic support leg hinged support, a top guard plate hinged support II and an extension hydraulic cylinder; the four top guard plate supporting hydraulic cylinders are symmetrically connected to two sides of the top guard plate, and the tail ends of piston rods of the top guard plate supporting hydraulic cylinders are connected with a top guard plate supporting hydraulic cylinder base; the top guard plate hinge brackets I are arranged on four corners of the top guard plate, the upper ends of the hydraulic support legs are hinged with the top guard plate hinge brackets I, and the lower ends of the hydraulic support legs are connected with the support leg base; the hydraulic support leg hinge bracket is arranged on the upper part of the hydraulic support leg, the top guard plate hinge bracket II is arranged on two sides of the top guard plate, two ends of the stretching hydraulic cylinder are respectively hinged with the hydraulic support leg hinge bracket and the top guard plate hinge bracket II, and the driving hydraulic cylinder hinge bracket II is arranged at the bottom of the top guard plate;
two ends of the driving hydraulic cylinder are hinged with the driving hydraulic cylinder hinged support I and the driving hydraulic cylinder hinged support II respectively;
The temporary support mechanism and the bottom plate telescopic system are in a contracted state in advance, the whole temporary support device is lifted by using lifting equipment until the upper part of the tunneling working face is close to the top plate, and piston rods of four bottom plate supporting hydraulic cylinders are pushed out and supported on two side walls of the comprehensive tunneling roadway, so that the whole temporary support device is supported on the top of the comprehensive tunneling roadway; after the excavation work of the heading machine is completed, an empty top area is formed at the cutting head and the cantilever section of the heading machine, and temporary support work is started;
The operation method is characterized by comprising the following steps of:
(1) The hydraulic cylinder is driven to work, the temporary support mechanism is pushed to move forwards, after the temporary support mechanism moves in place, the top guard plate supports the hydraulic cylinder to work, piston rods of the top guard plate supports the hydraulic cylinder to push out and support the piston rods on two side walls of a roadway, and temporary support equipment is supported on the top of the roadway;
(2) Then the bottom plate supporting hydraulic cylinder piston rod is retracted, the hydraulic cylinder piston rod is driven to retract to drive the bottom plate telescopic system to retract, then the bottom plate supporting hydraulic cylinder starts to work, the bottom plate supporting hydraulic cylinder piston rod is pushed out and supported on two side walls of a roadway, and the top guard plate supporting hydraulic cylinder piston rod is retracted;
(3) Repeating the steps (1) - (2) until the temporary support equipment is positioned below the empty roof area, and the top guard plate supports the piston rods of the hydraulic cylinders to push out and support the piston rods on the two side walls of the roadway, and drives the hydraulic cylinders to be in a piston rod push-out state;
(4) Then the stretching hydraulic cylinder acts to drive the hydraulic supporting leg to stand up;
(5) The hydraulic support leg starts to work after standing up, so that the support leg base is grounded, the top guard plate supports the piston rod of the hydraulic cylinder to retract, and the hydraulic support leg continues to work until the top guard plate is connected with the top.
2. The method of operating an alternate support type fully-mechanized roadway temporary support apparatus of claim 1, wherein the bottom plate is a truss structure.
3. The method of operating an alternate support type fully-mechanized roadway temporary support apparatus as recited in claim 1, wherein the sliding means comprises a linear guide and a slider, the linear guide is disposed on the upper portion of the base plate, and the slider is connected to the bottom of the top guard plate and is mounted on the linear guide.
4. The method for operating the alternate support type fully-mechanized roadway temporary support equipment according to claim 3, wherein two linear guide rails are arranged on the bottom plate in parallel, and two sliding blocks are arranged on each linear guide rail in a matched mode.
5. The method for operating an alternate support type fully-mechanized roadway temporary support device according to claim 3, wherein the linear guide rail is mounted on the upper surface of the bottom plate through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910788157.8A CN110359939B (en) | 2019-08-26 | 2019-08-26 | Alternate support type comprehensive tunnel temporary support equipment and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910788157.8A CN110359939B (en) | 2019-08-26 | 2019-08-26 | Alternate support type comprehensive tunnel temporary support equipment and application thereof |
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| CN110359939A CN110359939A (en) | 2019-10-22 |
| CN110359939B true CN110359939B (en) | 2024-06-25 |
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| CN210440065U (en) * | 2019-08-26 | 2020-05-01 | 山东科技大学 | Alternate support type fully-mechanized excavation roadway temporary support equipment |
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| CN105545336B (en) * | 2016-03-07 | 2018-02-23 | 山东科技大学 | Driving face longeron interlocks brace type gib method |
| CA3024016A1 (en) * | 2016-06-10 | 2017-12-14 | Sandvik Intellectual Property Ab | Active temporary roof support apparatus |
| CN110130965B (en) * | 2019-06-13 | 2021-03-02 | 河南理工大学 | Advanced support bracket for comprehensive mechanized excavation and use method |
| CN110118097B (en) * | 2019-06-22 | 2024-04-19 | 山东科技大学 | Backpack type fully-mechanized roadway temporary support equipment and application thereof |
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| CN210440065U (en) * | 2019-08-26 | 2020-05-01 | 山东科技大学 | Alternate support type fully-mechanized excavation roadway temporary support equipment |
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