CN211178169U - Protection device for small-size tunnel blasting construction in city - Google Patents
Protection device for small-size tunnel blasting construction in city Download PDFInfo
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- CN211178169U CN211178169U CN201921601796.0U CN201921601796U CN211178169U CN 211178169 U CN211178169 U CN 211178169U CN 201921601796 U CN201921601796 U CN 201921601796U CN 211178169 U CN211178169 U CN 211178169U
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Abstract
The utility model provides a protector of small-size tunnel blasting construction in city belongs to road construction technical field. A protector of small-size tunnel blasting construction in city include blasting protecting wall, bracing, sand bag, guide wall and protection tire. The utility model discloses can effectually prevent that the stone chip from splashing and absorbing the explosion energy, control the broken stone piece that the blasting produced, prevent to cause the injury and produce destruction to building and facility to personnel on every side. The structure has the characteristics of simplicity, practicability, flexibility, economy, safety, reliability and short mounting and dismounting time, ensures the normal blasting speed of the tunnel, and effectively ensures the safety in the construction process.
Description
Technical Field
The utility model belongs to the technical field of the road construction, specifically speaking relates to a protector of small-size tunnel blasting construction in city.
Background
With the continuous development of urbanization, infrastructure construction in our cities becomes more compact, under the condition of limited sites, three-dimensional traffic and multilayer structures become the main trend of current city planning, the application of tunnels in municipal engineering brings great convenience for land use and space arrangement, and the tunnels are mainly divided into four types according to the classification of construction processes, such as shield tunnels, pipe-jacking tunnels, TBM tunnels and mine tunnels. In urban areas, special complex urban construction sites such as high-voltage power towers, crowd intensive places and the like exist around the urban areas, the protection conditions are harsh when blasting construction is carried out, the influence of blasting on the surrounding safety and environment needs to be comprehensively considered, and corresponding protection devices are lacked in the prior art, so that the protection device for blasting construction of the urban small tunnel is necessary to be designed, and the blasting process is guaranteed not to influence the surrounding safety and environment.
Disclosure of Invention
In order to solve the problem that proposes among the background art, the utility model provides a protector of small-size tunnel blasting construction in city prevents that the stone chip from splashing and pouring the explosion energy, controls the broken stone piece that the blasting produced, prevents to cause injury and building and facility production to destroy to personnel on every side.
The utility model provides a technical scheme that its technical problem adopted as follows:
the utility model provides a protector of small-size tunnel blasting construction in city, includes blasting protecting wall, bracing, sand bag, guide wall and protective tire, blasting protecting wall set up in the outside of waiting to explode the stratum, blasting protecting wall right side top and wait to explode and be provided with the guide wall between the stratum top, the blasting protecting wall of guide wall below and wait to explode the stratum between space department sign indicating number and stay have protective tire, blasting protecting wall left side is connected with the bracing that is used for supporting blasting protecting wall, the bracing lower extreme passes through the earth anchor to be fixed on ground, blasting protecting wall left side has still piled up a plurality of sand bags.
Furthermore, the blasting protective wall comprises channel steel frame and bamboo strip, and the channel steel frame is arranged by the horizontal vertical cross of a plurality of channel-section steels and forms, and the channel steel frame is equipped with two-layerly, has laid a plurality of bamboo strips between the two-layer channel steel frame.
Furthermore, the inclined struts are connected with the blasting protection wall through hinges, the inclined struts are provided with a plurality of inclined struts, and the distance between every two adjacent inclined struts is 90 cm.
Further, the rock stratum of waiting to explode in the cartridge have a plurality of stocks, the stock outer end is connected with the blasting protective wall, interval 1.5m between the adjacent stock.
The utility model has the advantages that:
the utility model discloses can effectually prevent that the stone chip from splashing and absorbing the explosion energy, control the broken stone piece that the blasting produced, prevent to cause the injury and produce destruction to building and facility to personnel on every side. The structure has the characteristics of simplicity, practicability, flexibility, economy, safety, reliability and short mounting and dismounting time, ensures the normal blasting speed of the tunnel, and effectively ensures the safety in the construction process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a connection diagram of the blasting protection wall structure of the present invention;
FIG. 3 is a connection diagram of the bracing structure of the present invention;
fig. 4 is a partial enlarged view of the part a of the present invention.
In the figure, 1-blasting protective wall, 2-guide wall, 3-protective tyre, 4-diagonal brace, 5-ground anchor, 6-sandbag, 7-channel steel frame, 8-bamboo strip, 9-anchor rod and 10-rock stratum to be blasted.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
As shown in fig. 1-4, a protection device for blasting construction of a small-sized tunnel in an urban area comprises a blasting protection wall 1, an inclined strut 4, a sand bag 6, a guide wall 2 and a protective tire 3, wherein the blasting protection wall 1 is arranged on the outer side of a rock stratum 10 to be blasted, and the blasting protection wall 1 covers an opening of the tunnel to be blasted to prevent broken stones caused by explosion from splashing. Be provided with guide wall 2 between 1 right side top of blasting protective wall and the rock stratum 10 top of waiting to blast, the blasting protective wall 1 of guide wall 2 below and wait to blast between the rock stratum 10 space department sign indicating number have protective tire 3, and protective tire 3 adopts junked tire, acts as the device atress buffering face, and the material is easily got, and the blast power is to the impact of blasting protective wall 1 when can having the little blasting of alleviating. The left side of the blasting protective wall 1 is connected with an inclined strut 4 used for supporting the blasting protective wall 1, the lower end of the inclined strut 4 is fixed on the ground through a ground anchor 5, and the inclined strut 4 supports the blasting protective wall 1, is a main component of device stress release and is also a key part for exerting counter-acting force of blasting shock waves on the blasting protective wall 1. Preferably, the inclined struts 4 are connected with the blasting protection wall 1 through hinges, the connecting parts are located at the positions, more than two thirds of the distance between the blasting protection wall 1 and the ground, the supporting angles of the inclined struts 4 can be adjusted, stable supporting of the inclined struts is guaranteed, the inclined struts 4 are provided with a plurality of inclined struts 4, the distance between every two adjacent inclined struts is 90cm, a plurality of sand bags 6 are stacked on the left side of the blasting protection wall 1, the blasting protection wall 1 is supported by the inclined struts 4, the inclined struts 4 are connected with the blasting protection wall 1 and press feet by the sand bags 6, the reacting force of the sand bags 6 and the inclined struts 4 is applied to the blasting protection wall 1, the blasting protection wall 1 and the blasting protection wall 1 share the effect of blasting. The utility model discloses can effectually prevent that the stone chip from splashing and absorbing the explosion energy, control the broken stone piece that the blasting produced, prevent to cause the injury and produce destruction to building and facility to personnel on every side. The structure has the characteristics of simplicity, practicability, flexibility, economy, safety, reliability and short mounting and dismounting time, ensures the normal blasting speed of the tunnel, and effectively ensures the safety in the construction process. Simple structure, installation and change are convenient, and when the tunnel blasting construction, it causes the injury and produces destruction to building and facility to reduce the blasting to personnel on every side, under the prerequisite of guaranteeing the construction safety nature, does not influence the speed of tunnel blasting excavation again, can effectively be under construction fast, the save time cost.
Blasting protective wall 1 constitute by channel-section steel frame 7 and bamboo strip 8, channel-section steel frame 7 is arranged by the horizontal vertical cross of a plurality of channel-section steels and is formed, and channel-section steel frame 7 is equipped with two-layerly, has laid a plurality of bamboo strips 8 between two-layer channel-section steel frame 7 to it is firm to use the steel wire ligature, wholly erects the bottom and inserts ground and the export of shutoff tunnel completely.
Wait to explode the rock stratum 10 in the embedded cartridge have a plurality of stock 9, the stock 9 outer end is connected with blasting protecting wall 1, interval 1.5m between the adjacent stock 9, 1.5 meters of rock is gone into to stock 9, ensures that blasting protecting wall 1 is firm.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (4)
1. The protection device for blasting construction of the small urban tunnel is characterized by comprising a blasting protection wall, inclined struts, sand bags, a guide wall and protection tires, wherein the blasting protection wall is arranged on the outer side of a rock stratum to be blasted, the guide wall is arranged between the top of the right side of the blasting protection wall and the top of the rock stratum to be blasted, the protection tires are stacked in gaps between the blasting protection wall below the guide wall and the rock stratum to be blasted, the inclined struts for supporting the blasting protection wall are connected to the left side of the blasting protection wall, the lower ends of the inclined struts are fixed to the ground through ground anchors, and the sand bags are further stacked on the left side of the blasting protection wall.
2. The protection device for small-size tunnel blasting construction in city of claim 1, characterized in that: the blasting protective wall comprises channel steel frame and bamboo strip, and the channel steel frame is arranged by the horizontal vertical cross of a plurality of channel-section steels and forms, and the channel steel is erect and is equipped with two-layerly, has laid a plurality of bamboo strips between two-layer channel steel frame.
3. The protection device for small-size tunnel blasting construction in city of claim 1, characterized in that: the bracing and blasting protective wall adopt hinged joint, and the bracing is provided with a plurality of, adjacent bracing interval 90 cm.
4. The protection device for small-size tunnel blasting construction in city of claim 1, characterized in that: the rock stratum of waiting to explode embedded the cartridge have a plurality of stock, the stock outer end is connected with the blasting protective wall, interval 1.5m between the adjacent stock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601796.0U CN211178169U (en) | 2019-09-25 | 2019-09-25 | Protection device for small-size tunnel blasting construction in city |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601796.0U CN211178169U (en) | 2019-09-25 | 2019-09-25 | Protection device for small-size tunnel blasting construction in city |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211178169U true CN211178169U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921601796.0U Active CN211178169U (en) | 2019-09-25 | 2019-09-25 | Protection device for small-size tunnel blasting construction in city |
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| CN (1) | CN211178169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320339A (en) * | 2021-12-20 | 2022-04-12 | 攀钢集团工程技术有限公司 | Buffering damping device for preventing blasting damage of tunnel portal |
-
2019
- 2019-09-25 CN CN201921601796.0U patent/CN211178169U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320339A (en) * | 2021-12-20 | 2022-04-12 | 攀钢集团工程技术有限公司 | Buffering damping device for preventing blasting damage of tunnel portal |
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