CN110924951A - Protective device for blasting construction vibration of underpass tunnel - Google Patents
Protective device for blasting construction vibration of underpass tunnel Download PDFInfo
- Publication number
- CN110924951A CN110924951A CN201911149074.0A CN201911149074A CN110924951A CN 110924951 A CN110924951 A CN 110924951A CN 201911149074 A CN201911149074 A CN 201911149074A CN 110924951 A CN110924951 A CN 110924951A
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- China
- Prior art keywords
- spring
- baffle
- plate
- tunnel
- fixing
- 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.)
- Pending
Links
- 238000005422 blasting Methods 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 230000001681 protective effect Effects 0.000 title description 4
- 238000013016 damping Methods 0.000 claims abstract description 26
- 230000001012 protector Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 description 30
- 239000002689 soil Substances 0.000 description 29
- 238000003780 insertion Methods 0.000 description 10
- 230000037431 insertion Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/045—Detonation-wave absorbing or damping means
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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A protection device for tunnel blasting construction vibration under wears includes: the supporting and fixing frame comprises a supporting and fixing frame, an arc-shaped frame, a top protection plate, a side plate and a fixing seat, wherein the arc-shaped frame is arranged on the supporting and fixing frame, the top protection plate is connected with the arc-shaped frame, the side plate is arranged outside the supporting and fixing frame, the fixing seat is connected to the bottom of the supporting and fixing frame, the side plate comprises a first baffle, a second baffle, a first spring column, a first damping spring and a connecting plate, the first baffle and the second baffle are arranged at intervals, the first spring column is arranged between the first baffle and the second baffle, the first damping spring is sleeved outside the first spring column, and the connecting plate is respectively connected with the first baffle and; the fixing base includes fixing base body, spring fixing base, second spring post and second damping spring, and the spring fixing base setting is inside the fixing base body, and the second spring post sets up on the spring fixing base, and second damping spring cup joints in the second spring post outside. The invention can improve the safety of the blasting construction of the underpass tunnel.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a protection device for blasting construction vibration of a downward-penetrating tunnel.
Background
Tunnels can be generally divided into three major categories, mountain tunnels, underwater tunnels and urban tunnels. Tunnels that traverse from mountains or hills in order to shorten the distance and avoid large slopes are called mountain tunnels; tunnels passing under a river or the sea floor to cross a river or a channel are called underwater tunnels; tunnels that are traversed underground in cities to accommodate the need for railways to traverse large cities are called urban tunnels. Generally, when a tunnel is constructed, blasting construction needs to be performed on the tunnel, large vibration can be generated in the blasting process, the stability of soil or rock around the tunnel is affected, the tunnel is easily collapsed, and certain potential safety hazards exist.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a protection device for blasting construction vibration of a underpass tunnel, which can improve the safety of blasting construction of the underpass tunnel.
In order to achieve the purpose, the invention provides the following technical scheme:
a protection device for tunnel blasting construction vibration under wears includes: the supporting and fixing frame comprises a supporting and fixing frame, an arc-shaped frame, a top protection plate, a side plate and a fixing seat, wherein the arc-shaped frame is arranged on the supporting and fixing frame, the top protection plate is connected with the arc-shaped frame, the side plate is arranged on the outer side of the supporting and fixing frame, the fixing seat is connected to the bottom of the supporting and fixing frame, the side plate comprises a first baffle plate, a second baffle plate, a first spring column, a first damping spring and a connecting plate, the first baffle plate and the second baffle plate are arranged at intervals, the first spring column is arranged between the first baffle plate and the second baffle plate, the first damping spring is sleeved on the outer side of the first spring column, and the connecting plate is respectively connected with the first baffle plate and the second baffle plate; the fixing seat comprises a fixing seat body, a spring fixing seat, a second spring column and a second damping spring, the spring fixing seat is arranged inside the fixing seat body, the second spring column is arranged on the spring fixing seat, and the second damping spring is sleeved on the outer side of the second spring column.
In one embodiment, a connecting spring is arranged between the top protection plate and the arc-shaped frame.
In one embodiment, the device for protecting the vibration of the underpass tunnel blasting construction further comprises: first curb plate mount pad, second curb plate mount pad and bolt first curb plate mount pad the second curb plate mount pad sets up respectively the curb plate both sides, just first curb plate mount pad with the second curb plate mount pad all passes through the bolt with support the mount and connect.
In one embodiment, the fixing seat is provided with a fixing hole.
In one embodiment, the supporting and fixing frame comprises a vertical rod and a connecting block, one end of the vertical rod is connected with the fixing seat, and the other end of the vertical rod is connected with the arc-shaped frame through the connecting block.
In one embodiment, the vertical rod is a telescopic rod.
In one embodiment, the top shield is an arcuate plate.
Compared with the prior art, the invention has the following beneficial effects:
according to the protection device for blasting construction vibration of the underpass tunnel, the top protection plate supports the soil body or rock body at the top end of the tunnel, the side plates support the soil body or rock body at two sides of the tunnel, and the first damping springs in the side plates can reduce vibration transmitted by the soil body or rock body, so that the stability of the soil body or rock body can be protected, and the safety of the protection device can be protected. Further, second damping spring in the fixing base can make whole device have certain elasticity, can alleviate the shaking force that tunnel top soil body or rock mass transmission come, and then further strengthen the stability of device, and protection device can not cause the potential safety hazard because of vibrations are too big. In conclusion, the protective device for blasting construction vibration of the underpass tunnel can simultaneously support soil or rock masses at the top end and on two sides of the tunnel, is high in stability, can ensure the stability of the soil or rock masses in the blasting process, and improves the safety of blasting construction of the underpass tunnel.
Drawings
FIG. 1 is a schematic structural view of a vibration protection device for blasting construction of a downward-through tunnel in one embodiment;
FIG. 2 is a partial structural cross-sectional view of a vibration shielding apparatus for a down-hole tunnel blasting operation in one embodiment;
fig. 3 is a schematic structural view of a side plate in one embodiment.
Description of reference numerals:
1-supporting fixed frames, 2-arc frames, 3-top protection plates, 4-side plates, 5-fixed seats, 6-connecting springs, 7-first side plate mounting seats, 8-second side plate mounting seats and 9-bolts;
101-vertical rod, 102-connecting block;
401-a first baffle, 402-a second baffle, 403-a first spring post, 404-a first damping spring, a connecting plate 405;
501-a holder body, 502-a spring holder, 503-a second spring column, 504-a second damping spring and 505-a fixing hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, an embodiment of a device for protecting blasting construction vibration of a downward tunnel includes: support mount 1, arc frame 2, top guard plate 3, curb plate 4 and fixing base 5. Arc frame 2 sets up on supporting mount 1, top guard plate 3 is connected with arc frame 2, curb plate 4 sets up in supporting mount 1 outside, fixing base 5 is connected to supporting mount 1 bottom, wherein, curb plate 4 includes first baffle 401, second baffle 402, first spring post 403, first damping spring 404 and connecting plate 405, first baffle 401 and second baffle 402 interval set up, first spring post 403 sets up between first baffle 401 and second baffle 402, first damping spring 404 cup joints in the first spring post 403 outside, connecting plate 405 is connected with first baffle 401 and second baffle 402 respectively. Fixing base 5 includes fixing base body 501, spring fixing base 502, second spring post 503 and second damping spring 504, and spring fixing base 502 sets up inside fixing base body 501, and second spring post 503 sets up on spring fixing base 502, and second damping spring 504 cup joints in the second spring post 503 outside.
Specifically, top guard plate 3 is the arc, laminates in the tunnel, can effectively support the soil body or the rock mass on tunnel top, protects the disturbance of blasting to the country rock. As shown in fig. 1, the number of the supporting fixing frames 1 is four, the number of the arc frames 2 and the number of the side plates 4 are two, the four supporting fixing frames 1 are distributed in a rectangular shape to form a supporting frame, the arc frames 2 are arranged above the supporting frame and are respectively connected with the corresponding supporting fixing frames 1, and the side plates 4 are arranged outside the supporting frame and are connected with the corresponding supporting frame 1.
Specifically, first baffle 401 and connecting plate 405 fixed connection, second baffle 402 and connecting plate 405 swing joint have specifically seted up the spout along the direction that sets up of first spring post 403 on connecting plate 405, and second baffle 402 tip is provided with the slider arch, and the slider arch can slide in the spout. Further, one end of the first spring column 403 is fixedly connected to the first baffle 401, the other end of the first spring column is movably connected to the second baffle 402, a first insertion hole is specifically formed in the second baffle 402, the first spring column 403 is partially inserted into the first insertion hole, the first spring column 403 can move in the first insertion hole, the first insertion hole can be a through hole or a blind hole, and the embodiment is not specifically limited. The vibration force transmitted by the soil or rock mass on the two sides of the tunnel in the blasting process can enable the first baffle 401 and the second baffle 402 to be close to each other, so that the first damping spring 404 is compressed, the vibration transmitted by the soil or rock mass on the two sides of the tunnel is absorbed, and the vibration transmitted by the soil or rock mass on the two sides of the tunnel can be effectively reduced. Of course, in other embodiments, the second baffle 402 may also be fixedly connected to the connecting plate 405 and the first spring post 403, respectively, and the first baffle 402 is provided with the slider protrusion and the first insertion hole, which also can achieve the same technical effect, and this embodiment is not limited in particular.
Specifically, in an embodiment, the spring fixing seat 502 is provided with a second insertion hole, one end of the second spring column 503 is inserted into the second insertion hole, the second spring column 503 can move in the second insertion hole, the other end of the second spring column 503 is fixedly connected to the fixing seat body 501, specifically, the second insertion hole may be a through hole or a blind hole, and this embodiment is not limited specifically. The shaking force of the soil body or rock mass transmission on the tunnel top can make spring fixing base 502 and fixing base body 501 be close to each other in the blasting process to compress second damping spring 504, absorb the vibrations that the soil body or rock mass transmission on the tunnel top came over, can alleviate the shaking force that the soil body or rock mass transmission came over on the tunnel top, reinforcing apparatus's stability. Of course, in other embodiments, the second insertion hole may be formed in the fixing base body 501, and the second spring column 503 is fixedly connected to the spring fixing base 502, which can also achieve the same technical effect, and this embodiment is not limited in particular.
According to the protection device for the blasting construction vibration of the underpass tunnel, the soil body or the rock body at the top end of the tunnel is supported through the top protection plate 3, the soil body or the rock body at two sides of the tunnel is supported through the side plate 4, and the first damping spring 404 in the side plate 4 can reduce the vibration transmitted by the soil body or the rock body, so that the stability of the soil body or the rock body can be protected, and the safety of the device can be protected. Further, the second damping spring 504 in the fixing seat 5 can make the whole device have certain elasticity, can alleviate the vibration force transmitted from the soil body or rock body on the top end of the tunnel, further enhance the stability of the device, and prevent the safety hazard caused by too large vibration of the protection device.
In one embodiment, be provided with connecting spring 6 between top guard plate 3 and the arc frame 2, specifically, connecting spring 6 is installed on the top of arc frame 2, and connecting spring 6's top is connected with top guard plate 3, and connecting spring 6 can play the weakening effect to the vibrations that soil body or rock mass transmission come when blasting construction, when protecting tunnel top rock mass and can not collapsing, can also protect device can not cause the potential safety hazard because of vibrations are too big, can further improve the security of blasting construction and the stability of device.
In one embodiment, the device for protecting against underpass tunnel blasting construction vibrations further comprises a first side plate mounting seat 7, a second side plate mounting seat 8 and a bolt 9. First curb plate mount pad 7, second curb plate mount pad 8 set up respectively in 4 both sides of curb plate, and first curb plate mount pad 7 and second curb plate mount pad 8 all are connected with support mount 1 through bolt 9. Specifically, the side plate 4 is connected with the supporting and fixing frame 1 through the first side plate mounting seat 7 and the second side plate mounting seat 8, the first side plate mounting seat 7 and the second side plate mounting seat 8 are connected with the supporting and fixing frame 1 through the bolts 9, the bolts 9 can ensure that the first side plate mounting seat 7 and the second side plate mounting seat 8 are stably and reliably connected with the supporting and fixing frame 1, and the stability and the safety of the device in use can be effectively ensured.
In an embodiment, the fixing base 5 is provided with fixing holes 505, specifically, the number of the fixing holes 505 is four, the four fixing holes 505 are respectively provided at four corners of the fixing base 5, and when the device is used, the fixing holes 505 are used for mounting and fixing by using fasteners (such as positioning pins or fastening bolts), so that stability and safety of the device in use can be further ensured.
In one embodiment, the supporting and fixing frame 1 comprises a vertical rod 101 and a connecting block 102, one end of the vertical rod 101 is connected with the fixing seat 5, and the other end of the vertical rod 101 is connected with the arc-shaped frame 2 through the connecting block 102. Specifically, the vertical rod 101 is a telescopic rod, and the telescopic rod adopted by the vertical rod 101 enables the device to be suitable for tunnels with different sizes, so that the universality of the device can be improved, and the application range of the device is expanded.
Specifically, the protection device for the blasting construction vibration of the underpass tunnel supports soil or rock mass on two sides of the tunnel through the side plate 4, and the first damping spring 401 is installed in the side plate 4, so that the vibration transmitted by the soil or rock mass during the blasting construction can be weakened, and the safety of the protection device is protected; the top protection plate 3 can support and protect soil or rock at the top end of the tunnel, the connecting spring 6 is arranged between the top protection plate 3 and the arc-shaped frame 2, the connecting spring 6 can weaken the vibration transmitted by the soil during blasting construction, and the device can guarantee the safety and the stability of the device while supporting the soil or rock at the periphery of the tunnel; the second damping spring 504 in the fixed seat 5 can provide a buffering effect on the acting force transmitted to the device from the soil body or rock body on the top of the tunnel, so that the stability and the safety of the device in use are ensured; the vertical rod 101 of the telescopic rod structure can be suitable for tunnels with different sizes, and the application range of the device is expanded. In conclusion, the protective device for blasting construction vibration of the underpass tunnel can simultaneously support soil or rock masses at the top end and on two sides of the tunnel, can ensure the stability of the soil or rock masses in the blasting process, improves the safety of blasting construction of the underpass tunnel, and has the advantages of high stability, high universality and wide application range.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides a protector of tunnel blasting construction vibration under wears which characterized in that includes: the support structure comprises a support fixing frame (1), an arc-shaped frame (2), a top protection plate (3), a side plate (4) and a fixing seat (5), wherein the arc-shaped frame (2) is arranged on the support fixing frame (1), the top protection plate (3) is connected with the arc-shaped frame (2), the side plate (4) is arranged on the outer side of the support fixing frame (1), the fixing seat (5) is connected to the bottom of the support fixing frame (1), the side plate (4) comprises a first baffle (401), a second baffle (402), a first spring column (403), a first damping spring (404) and a connecting plate (405), the first baffle and the second baffle (402) are arranged at intervals, the first spring column (403) is arranged between the first baffle (401) and the second baffle (402), and the first damping spring (404) is sleeved on the outer side of the first spring column (403), the connecting plate (405) is respectively connected with the first baffle plate (401) and the second baffle plate (402); the fixing seat (5) comprises a fixing seat body (501), a spring fixing seat (502), a second spring column (503) and a second damping spring (504), wherein the spring fixing seat (502) is arranged inside the fixing seat body (501), the second spring column (503) is arranged on the spring fixing seat (502), and the second damping spring (504) is sleeved outside the second spring column (503).
2. The protection device against underpass tunnel blasting construction vibrations according to claim 1, characterized in that a connecting spring (6) is arranged between the top protection plate (3) and the arc-shaped frame (2).
3. The apparatus for protecting against tunnel blast construction vibration of claim 1, wherein said apparatus for protecting against tunnel blast construction vibration further comprises: first curb plate mount pad (7), second curb plate mount pad (8) and bolt (9), first curb plate mount pad (7), second curb plate mount pad (8) set up respectively curb plate (4) both sides, just first curb plate mount pad (7) with second curb plate mount pad (8) all pass through bolt (9) with support mount (1) and be connected.
4. The device for preventing vibration in blasting construction of a downward-through tunnel according to claim 1, wherein the fixing seat (5) is provided with a fixing hole (505).
5. The protection device for blasting construction vibration of a downward-through tunnel according to claim 1, wherein the supporting and fixing frame (1) comprises a vertical rod (101) and a connecting block (102), one end of the vertical rod (101) is connected with the fixing seat (5), and the other end of the vertical rod (101) is connected with the arc-shaped frame (2) through the connecting block (102).
6. The protection device against underpass tunnel blasting construction vibrations as claimed in claim 5, characterized in that said vertical rod (101) is a telescopic rod.
7. The protection device against underpass tunnel blasting construction vibrations as claimed in claim 1, characterized in that said top protection plate (3) is an arc plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149074.0A CN110924951A (en) | 2019-11-21 | 2019-11-21 | Protective device for blasting construction vibration of underpass tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149074.0A CN110924951A (en) | 2019-11-21 | 2019-11-21 | Protective device for blasting construction vibration of underpass tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110924951A true CN110924951A (en) | 2020-03-27 |
Family
ID=69850588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911149074.0A Pending CN110924951A (en) | 2019-11-21 | 2019-11-21 | Protective device for blasting construction vibration of underpass tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110924951A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588190A (en) * | 2021-10-08 | 2021-11-02 | 四川藏区高速公路有限责任公司 | Vibration response test device for blasting construction to adjacent existing tunnel |
-
2019
- 2019-11-21 CN CN201911149074.0A patent/CN110924951A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588190A (en) * | 2021-10-08 | 2021-11-02 | 四川藏区高速公路有限责任公司 | Vibration response test device for blasting construction to adjacent existing tunnel |
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