CN107227966B - Temporary support device for tunnel excavation - Google Patents
Temporary support device for tunnel excavation Download PDFInfo
- Publication number
- CN107227966B CN107227966B CN201710481804.1A CN201710481804A CN107227966B CN 107227966 B CN107227966 B CN 107227966B CN 201710481804 A CN201710481804 A CN 201710481804A CN 107227966 B CN107227966 B CN 107227966B
- Authority
- CN
- China
- Prior art keywords
- frame
- support
- top frame
- adjusting unit
- height adjusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000009412 basement excavation Methods 0.000 title description 2
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 230000005641 tunneling Effects 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to the technical field of roadway construction, and provides a roadway tunneling temporary support device. The device comprises a top frame and a plurality of supporting components used for supporting the top frame, wherein a protective net is paved on the top frame, each supporting component comprises a support and a height adjusting unit, one end of the support is connected with the top frame, the other end of the support is connected with the height adjusting unit, and the height adjusting unit is used for driving the support to move up and down. The invention has simple structure and convenient operation, and the support is driven by the height adjusting unit to move up and down to apply a certain pretightening force on the top frame, so that the top frame paved with the protective net is clung to the top plate, thereby not only increasing the contact area between the top frame and the top plate, improving the supporting strength, avoiding the separation of the top plate, but also improving the adaptability, and enabling the top frame to be used for the top plates with different surface conditions; in addition, the protection net can also bear the falling rock quickly, so that the safety is further improved.
Description
Technical Field
The invention relates to the technical field of roadway construction, in particular to a roadway tunneling temporary support device.
Background
Along with the improvement of the production capacity and the propulsion speed of the comprehensive tunneling working face, the range of a tunneling area is increasingly enlarged, and the rapid support of a tunneling roadway becomes one of key technologies of high-yield, high-efficiency and safe production of mines.
The occurrence condition of the roof strata of the coal mine tunnel in China is complex, the lithology of the roof is often changed, especially when the roof surrounding rock strength is low and the cohesiveness is poor, the roof is easy to break, separate layers and fall off in different degrees at the initial stage of tunneling, and the supporting is difficult, so that the tunneling speed and the average month footage of tunneling and anchoring are prevented from being improved.
At present, the tunnelling temporary support device commonly has three structural forms of a front cantilever type, a strut and a cross beam type and a tunnelling machine on-board. The front cantilever type structure has high requirements on the top plate, can only be used under the condition that the top plate is good, and has low complex operation supporting speed; the strut and beam type structure support has low strength, low support speed, high labor intensity and high cost, and can not support the forefront of the working face, and accidents are easy to occur. The supporting force of the machine-mounted structure of the heading machine is smaller, the machine-mounted structure is easy to be unstable, the subsequent working danger is large, and it is necessary to add devices to the heading machine and make modifications.
Disclosure of Invention
The invention aims to solve the technical problems of complex operation, low supporting strength and poor adaptability of a roadway tunneling temporary supporting device in the prior art.
In order to solve the problems, the invention provides a tunnelling temporary support device, which comprises a top frame and a plurality of support components for supporting the top frame, wherein a protective net is paved on the top frame, each support component comprises a support and a height adjusting unit, one end of the support is connected with the top frame, the other end of the support is connected with the height adjusting unit, and the height adjusting unit is used for driving the support to move up and down.
Wherein the bracket is a three-strand fork bracket.
Wherein, the support with the height-adjusting unit can dismantle the connection.
The top frame comprises a first frame and a second frame detachably connected with the first frame, the protective net is laid on the first frame, and the section shape of the second frame is adapted to the shape of the air duct.
The first frame is composed of a plurality of frame units which are detachably connected with each other, and the protective net is paved on each frame unit.
Wherein the height adjusting unit is a hydraulic pushing device.
Wherein, the bottom of hydraulic pressure impeller is equipped with the pulley.
Wherein, be equipped with the brake block on the pulley.
Wherein, the height adjusting unit is a jack.
The invention has simple structure and convenient operation, and the support is driven by the height adjusting unit to move up and down to apply a certain pretightening force on the top frame, so that the top frame paved with the protective net is clung to the top plate, thereby not only increasing the contact area between the top frame and the top plate, improving the supporting strength, avoiding the separation of the top plate, but also improving the adaptability, and enabling the top frame to be used for the top plates with different surface conditions; in addition, the protection net can also bear the falling rock quickly, so that the safety is further improved.
Drawings
FIG. 1 is a top view of a tunnelling temporary support device in an embodiment of the invention;
FIG. 2 is a left side view of a tunnelling temporary support device in an embodiment of the invention;
fig. 3 is a front view of a tunnelling temporary support device in an embodiment of the invention.
Reference numerals:
1. a top frame; 1-1, a first frame; 1-2, a second frame; 2-1, a bracket; 2-2, a height adjusting unit; 2-3, pulleys; 3. and a protective net.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which would be apparent to one of ordinary skill in the art without making any inventive effort are intended to be within the scope of the invention.
In the description of the present invention, unless otherwise indicated, the terms "upper," "lower," "top," "bottom," and the like refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
It should be noted that unless explicitly stated or limited otherwise, the term "coupled" is to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the invention will be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1 and 2, the present invention provides a temporary support device for tunneling, which comprises a top frame 1 and a plurality of support members for supporting the top frame 1, wherein a protection net 3 is laid on the top frame 1, each support member comprises a support 2-1 and a height adjusting unit 2-2, one end of the support 2-1 is connected with the top frame 1, the other end is connected with the height adjusting unit 2-2, and the height adjusting unit 2-2 is used for driving the support 2-1 to move up and down.
When in use, the top frame 1 is only required to be erected between the fully-mechanized excavating machine and the top plate through the supporting component; then, the height adjusting unit 2-2 is driven, so that the height adjusting unit 2-2 drives the bracket 2-1 to move upwards for a specified distance, namely until the top frame 1 is tightly attached to the top plate. Therefore, the height adjusting unit 2-2 drives the bracket 2-1 to move up and down to apply a certain pretightening force to the top frame 1, so that the contact area of the top frame 1 and a top plate is increased, the supporting strength is improved, the separation of the top plate is avoided, the adaptability is improved, and the top frame 1 can be used for top plates with different surface conditions; in addition, the protection net 3 can also bear the falling rock, so that the safety is further improved.
Preferably, the stent 2-1 is a three-strand fork stent 2-1. More preferably, the angle between adjacent prongs in the three-prong bracket 2-1 is 30 °. The advantages of this arrangement are that: on one hand, the contact area between the bracket 2-1 and the top plate can be increased, so that the bracket 2-1 is firmly connected with the top plate; on the other hand, the unidirectional acting force applied by the height adjusting unit 2-2, namely the thrust in the vertical direction, can be decomposed into acting forces in three directions through the support 2-1, so that the stress of the top plate is more uniform, and the strength of the support 2-1 is improved.
Preferably, the stand 2-1 is detachably connected to the height adjusting unit 2-2 to facilitate the later maintenance and replacement. More preferably, the bracket 2-1 is flange-coupled with the height adjusting unit 2-2.
As shown in fig. 3, the top frame 1 comprises a first frame 1-1 and a second frame 1-2 detachably connected with the first frame 1-1, wherein a protective net 3 is paved on the first frame 1-1, the section shape of the second frame 1-2 is adapted to the shape of the air duct, namely, a groove is formed by surrounding the second frame 1-2, and the air duct can be embedded in the groove, that is, the cross section of the second frame 1-2 is semicircular, and the diameter of the second frame is equal to or slightly larger than the diameter of the air duct. Therefore, in use, the air duct can be placed on the second frame 1-2 so as to reduce the influence on the normal ventilation of the working face at the head-on.
Further, the first frame 1-1 is composed of a plurality of frame units detachably connected to each other, and a protection net 3 is laid on each frame unit. Thus, the number of frame units can be determined according to the size of the roof panel so that the area of the roof frame 1 is adapted to the area of the roof panel, that is, when the size of the roof panel is large, some frame units can be added; when the area of the top plate is smaller, some of the frame units may be reduced. In addition, by adopting a plurality of frame units, the strength of the whole first frame 1-1 can be improved, the later maintenance and replacement are convenient, and the cost can be greatly reduced.
Preferably, the height adjustment unit 2-2 is a hydraulic pusher. When the hydraulic pusher is used, the bracket 2-1 can be driven to move up and down only by manually shaking the operating rod on the hydraulic pusher.
Further, the bottom of the hydraulic impeller is provided with a pulley 2-3 so that the device can move along with the tunneling process at any time.
Further, a brake pad is provided on the pulley 2-3 to avoid slipping.
It should be noted that the number of the substrates, the height adjustment unit 2-2 may be a hydraulic pusher, but also a jack.
The digging width is 5m, the digging height is 3.2m, and the digging section is 16m 2 The following describes a method for using the temporary support device for tunneling in this embodiment, taking a rectangular roadway as an example:
s1, erecting a top frame 1 between a fully-mechanized excavating machine and a top plate through a supporting component: according to the dimensions of the roof plate, a corresponding number of support assemblies, frame units and protective screening 3 are selected and assembled in the tunnel. Specifically, 4 support assemblies, 2 frame units and 2 protective nets can be selected. Each frame unit is a rectangular frame formed by surrounding a cross rod and a vertical rod, and the cross rod and the vertical rod are seamless steel pipes with the diameter of 50 mm; the protective net 3 is a reinforcing net manufactured by welding after the longitudinal reinforcing steel bars and the transverse reinforcing steel bars with the diameter of 6.5mm are crossed; the included angle between the adjacent fork columns in the three-strand fork-shaped support 2-1 is 30 degrees, and each fork column is a seamless steel tube with the diameter of 50 mm; the height adjusting unit 2-2 adopts a hydraulic impeller with the model YT4-8A, the rated thrust is 39.2KN, and the pushing speed is 17 mm/time.
S2, rocking an operating rod on the hydraulic pusher until the top frame 1 is tightly attached to the top plate;
s3, pushing the device to reach the next position to be supported.
Finally, it should be noted that: the above embodiments are only for illustrating the technical scheme of the invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the invention.
Claims (5)
1. The temporary supporting device for roadway tunneling is characterized by comprising a top frame and a plurality of supporting components for supporting the top frame, wherein a protective net is paved on the top frame, each supporting component comprises a support and a height adjusting unit, one end of the support is connected with the top frame, the other end of the support is connected with the height adjusting unit, and the height adjusting unit is used for driving the support to move up and down;
the support is a three-strand fork-shaped support, and the included angle between adjacent fork columns in the three-strand fork-shaped support is 30 degrees;
the top frame comprises a first frame and a second frame detachably connected with the first frame, the first frame is paved with the protective net, and the section shape of the second frame is adapted to the shape of the air duct;
the support is detachably connected with the height adjusting unit;
the first frame is composed of a plurality of frame units which are detachably connected with each other, and each frame unit is paved with the protective net.
2. The tunnelling temporary support device as claimed in claim 1, wherein the height adjustment unit is a hydraulic pusher.
3. The tunnelling temporary support device as claimed in claim 2, wherein the bottom of the hydraulic pusher is provided with a pulley.
4. A tunnelling temporary support device as claimed in claim 3 wherein the pulley is provided with a brake pad.
5. The tunnelling temporary support device of claim 1, wherein the height adjustment unit is a jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481804.1A CN107227966B (en) | 2017-06-22 | 2017-06-22 | Temporary support device for tunnel excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481804.1A CN107227966B (en) | 2017-06-22 | 2017-06-22 | Temporary support device for tunnel excavation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107227966A CN107227966A (en) | 2017-10-03 |
| CN107227966B true CN107227966B (en) | 2023-10-10 |
Family
ID=59935064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710481804.1A Active CN107227966B (en) | 2017-06-22 | 2017-06-22 | Temporary support device for tunnel excavation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107227966B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538264A (en) * | 2019-01-10 | 2019-03-29 | 江苏中贵重工有限公司 | A kind of suspension device |
| CN112478665A (en) * | 2020-11-13 | 2021-03-12 | 焦作科瑞森重装股份有限公司 | Hydraulic combined type underground lifting device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1719876A1 (en) * | 2005-05-03 | 2006-11-08 | Maschinenfabrik Glückauf GmbH & Co. KG | Stope support for underground gallery. |
| CN101029570A (en) * | 2007-04-24 | 2007-09-05 | 河北理工大学 | Advanced stand device of driving face |
| CN201221365Y (en) * | 2008-06-30 | 2009-04-15 | 永煤集团股份有限公司新桥煤矿 | Front cantilever temporary support |
| CN201560775U (en) * | 2009-09-29 | 2010-08-25 | 山东泰丰矿业集团有限公司 | Temporary support device for coal mine tunneling |
| CN102966367A (en) * | 2012-11-23 | 2013-03-13 | 三一重型装备有限公司 | Roadway construction equipment and dust removing device thereof |
| CN103758543A (en) * | 2014-01-21 | 2014-04-30 | 中国矿业大学 | Temporary advanced support device |
| CN204492865U (en) * | 2015-03-26 | 2015-07-22 | 湖南涟邵建设工程(集团)有限责任公司 | A kind of bauxite tunnel fully-mechanized digging machine is constructed airborne forepoling support device |
| CN207111142U (en) * | 2017-06-22 | 2018-03-16 | 天地科技股份有限公司 | Temporary supporting device for laneway tunneling |
-
2017
- 2017-06-22 CN CN201710481804.1A patent/CN107227966B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1719876A1 (en) * | 2005-05-03 | 2006-11-08 | Maschinenfabrik Glückauf GmbH & Co. KG | Stope support for underground gallery. |
| CN101029570A (en) * | 2007-04-24 | 2007-09-05 | 河北理工大学 | Advanced stand device of driving face |
| CN201221365Y (en) * | 2008-06-30 | 2009-04-15 | 永煤集团股份有限公司新桥煤矿 | Front cantilever temporary support |
| CN201560775U (en) * | 2009-09-29 | 2010-08-25 | 山东泰丰矿业集团有限公司 | Temporary support device for coal mine tunneling |
| CN102966367A (en) * | 2012-11-23 | 2013-03-13 | 三一重型装备有限公司 | Roadway construction equipment and dust removing device thereof |
| CN103758543A (en) * | 2014-01-21 | 2014-04-30 | 中国矿业大学 | Temporary advanced support device |
| CN204492865U (en) * | 2015-03-26 | 2015-07-22 | 湖南涟邵建设工程(集团)有限责任公司 | A kind of bauxite tunnel fully-mechanized digging machine is constructed airborne forepoling support device |
| CN207111142U (en) * | 2017-06-22 | 2018-03-16 | 天地科技股份有限公司 | Temporary supporting device for laneway tunneling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107227966A (en) | 2017-10-03 |
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