CN204788093U - Shallow blasting system of burying undercut tunnel vibration in control city - Google Patents
Shallow blasting system of burying undercut tunnel vibration in control city Download PDFInfo
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- CN204788093U CN204788093U CN201520419511.7U CN201520419511U CN204788093U CN 204788093 U CN204788093 U CN 204788093U CN 201520419511 U CN201520419511 U CN 201520419511U CN 204788093 U CN204788093 U CN 204788093U
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Abstract
The utility model discloses a shallow blasting system of burying undercut tunnel vibration in control city, including excavating in the compound undercuttings (2) of tunnel section's (1) a plurality of wedges and packing the blasting cap in peripheral undercutting punchhole (3), characterized by: tunnel section (1) middle part still excavation has diamond cut hole (4), diamond cut hole (4) center is equipped with two straight eye big gun holes (5) and fills there is the blasting explosive. This blasting system can be utilized the centre bore can reduce pressing from both sides of rock and make usefulness, improves the undercutting effect, reduces the effect of the vibration of keyhole production, and the effectual blasting vibration velocity of having controlled reduces the influence to peripheral resident, has accelerated the construction progress greatly.
Description
Technical field
The utility model relates to constructing tunnel field, particularly relates to a kind of explosion system that can control city shallow-depth-excavation tunnel oscillation intensity.
Background technology
Carry out the construction of shallow-depth-excavation tunnel development blasting in urban environment, blasting vibration is the key in construction for the impact of ground surface environment, and how it particularly importantly ensures the safety of surface buildings, in order to controlled blasting vibration ill-effect, the oscillation intensity adopting vibration monitoring to understand explosion in engineering more, analyze concussion of blasting to the influence degree on earth's surface, and generally taking the short drilling depth short-delay blasting limiting maximum single hop dose, carrying out controlled blasting dither effect by reducing blasting vibration intensity.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of explosion system controlling city shallow-depth-excavation tunnel vibration, under the prerequisite not affecting progress and cost, effectively reduce blasting vibration.
The utility model solves the problems of the technologies described above adopted technical scheme:
A kind of explosion system controlling city shallow-depth-excavation tunnel vibration, comprise excavate in tunnel cross-section the compound slotting of some wedge shapes and be filled in the detonating capsule of peripheral keyhole intraocular, in the middle part of described tunnel cross-section, also excavation has rhombus diging groove hole, and center, described rhombus diging groove hole is provided with two straight eye big gun holes and is filled with rendrock.
Center, described rhombus diging groove hole adds two straight eye big gun holes, and the method reducing keyhole K value can be taked in straight eye big gun hole, namely improves Cut Blasting free face condition, reduces the clamping action that big gun hole is subject to.
Described tunnel cross-section is the shape of a hoof.
The compound slotting of described wedge shape is curved, and need to be divided into multilayer along tunnel cross-section ecto-entad according to design, every layer is divided into some sections again, and every section of slotting has dug peripheral slotting eyelet by same intervals.
The rendrock for igniting in advance of filling in described straight eye big gun hole, the detonating capsule for delaying ignition of described peripheral keyhole intraocular installing.
The technique effect that the utility model adopts technique scheme to have is:
This explosion system can utilize centre bore can reduce the clamping action of rock, improves slotting effect, reduces the effect of the vibration that keyhole produces, effectively controls Explosive Vibrating Velocity, reduce the impact on nearby residents, greatly accelerate construction speed.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail
Fig. 1 is this explosion system front elevation
Fig. 2 is this explosion system sectional side elevation
Wherein, 1-tunnel cross-section, the compound slotting of 2-wedge shape, the peripheral slotting eyelet of 3-, 4-rhombus diging groove hole, 5-straight eye big gun hole
Detailed description of the invention
A kind of explosion system controlling city shallow-depth-excavation tunnel vibration as depicted in figs. 1 and 2, comprise the compound slotting of some wedge shapes 2 and the detonating capsule that is filled in peripheral slotting eyelet 3 of excavating in tunnel cross-section 1, in the middle part of tunnel cross-section 1, also excavation has rhombus diging groove hole 4, center, described rhombus diging groove hole 4 is provided with two straight eye big gun holes 5 and is filled with rendrock, first reduction slotting clamping action is reached in the certain scope of freedom of quick-fried generation by two centre bores, reduce vibration, improve slotting effect, reduce the effect of the vibration that keyhole produces, effective controlled blasting vibration velocity.
The shallow tunnel explosion system of this programme, takes each self-described of method distinguished, and then effective method can be taked accurately to control to the vibration regularity in different type of action big gun hole.Vibration attenuation parameter K value reduces gradually along with the increase of hop count, and α value is substantially constant, when excavating by taking benching tunnelling method, vibration attenuation index, K value decays to 26, α value along with the increase of hop count between 1.4 ~ 1.6 gradually from 68, meets the requirement controlling oscillation intensity.
The compound slotting 2 of wedge shape needs to be divided into multilayer along tunnel cross-section 1 ecto-entad according to design, and every layer is divided into some sections again, and every section of slotting has dug peripheral slotting eyelet 3 by same intervals.
The rendrock for igniting in advance of filling in straight eye big gun hole 5, the detonating capsule for delaying ignition of installing in described peripheral slotting eyelet 3.By change centre bore and peripheral detonator firing order, under the prerequisite not affecting progress and cost, effectively can reduce blasting vibration.
Claims (5)
1. one kind controls the explosion system of city shallow-depth-excavation tunnel vibration, comprise the compound slotting of some wedge shapes (2) and the detonating capsule that is filled in peripheral slotting eyelet (3) of excavating in tunnel cross-section (1), it is characterized in that: there is rhombus diging groove hole (4) at described tunnel cross-section (1) middle part also excavation, and described rhombus diging groove hole (4) center is provided with two straight eye big gun holes (5) and is filled with rendrock.
2. the explosion system of control city according to claim 1 shallow-depth-excavation tunnel vibration, is characterized in that: described straight eye big gun hole (5) is shallow bore hole, and hole depth is 1/2nd drilling depths.
3. the explosion system of control city according to claim 1 shallow-depth-excavation tunnel vibration, is characterized in that: described tunnel cross-section (1) is in the shape of a hoof.
4. the explosion system of control city according to claim 1 shallow-depth-excavation tunnel vibration, it is characterized in that: the compound slotting of described wedge shape (2) is curved, along tunnel cross-section, (1 ecto-entad is divided into multilayer, every layer is divided into some sections again, and every section of slotting has dug peripheral slotting eyelet (3) by same intervals.
5. the explosion system of control city according to claim 1 and 2 shallow-depth-excavation tunnel vibration, it is characterized in that: the rendrock for igniting in advance of filling in described straight eye big gun hole (5), the detonating capsule for delaying ignition of installing in described peripheral slotting eyelet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419511.7U CN204788093U (en) | 2015-06-17 | 2015-06-17 | Shallow blasting system of burying undercut tunnel vibration in control city |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419511.7U CN204788093U (en) | 2015-06-17 | 2015-06-17 | Shallow blasting system of burying undercut tunnel vibration in control city |
Publications (1)
| Publication Number | Publication Date |
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| CN204788093U true CN204788093U (en) | 2015-11-18 |
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| CN201520419511.7U Active CN204788093U (en) | 2015-06-17 | 2015-06-17 | Shallow blasting system of burying undercut tunnel vibration in control city |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767205A (en) * | 2016-12-23 | 2017-05-31 | 山东大学 | The micro- Comprehensive Control blasting method of shaking of bustling urban district subway running tunnel |
| CN109506529A (en) * | 2018-12-18 | 2019-03-22 | 福建海峡科化富兴建设工程有限公司 | A kind of compound Cut Blasting method |
| CN109870081A (en) * | 2019-03-28 | 2019-06-11 | 中交路桥建设有限公司 | A kind of narrow-bore tunnel cut shot method for adding guiding shock relieve vent |
| CN110285728A (en) * | 2019-07-29 | 2019-09-27 | 华侨大学 | A kind of slotting pore structure and method in Tunnel Blasting excavation work |
| CN110332861A (en) * | 2019-06-25 | 2019-10-15 | 中铁十二局集团有限公司 | City underground complex environment controls blasting construction method |
| CN113686215A (en) * | 2021-09-09 | 2021-11-23 | 昆明理工大学 | Rock roadway large-diameter double-hole charging accurate time-delay hole-by-hole vertical cut blasting method |
-
2015
- 2015-06-17 CN CN201520419511.7U patent/CN204788093U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767205A (en) * | 2016-12-23 | 2017-05-31 | 山东大学 | The micro- Comprehensive Control blasting method of shaking of bustling urban district subway running tunnel |
| CN109506529A (en) * | 2018-12-18 | 2019-03-22 | 福建海峡科化富兴建设工程有限公司 | A kind of compound Cut Blasting method |
| CN109506529B (en) * | 2018-12-18 | 2021-06-08 | 福建海峡科化富兴建设工程有限公司 | Composite cut blasting method |
| CN109870081A (en) * | 2019-03-28 | 2019-06-11 | 中交路桥建设有限公司 | A kind of narrow-bore tunnel cut shot method for adding guiding shock relieve vent |
| CN109870081B (en) * | 2019-03-28 | 2022-04-26 | 中交路桥建设有限公司 | Small-section tunnel cut method additionally provided with guide damping holes |
| CN110332861A (en) * | 2019-06-25 | 2019-10-15 | 中铁十二局集团有限公司 | City underground complex environment controls blasting construction method |
| CN110332861B (en) * | 2019-06-25 | 2022-10-04 | 中铁十二局集团有限公司 | Blasting construction method for controlling urban subway complex environment |
| CN110285728A (en) * | 2019-07-29 | 2019-09-27 | 华侨大学 | A kind of slotting pore structure and method in Tunnel Blasting excavation work |
| CN113686215A (en) * | 2021-09-09 | 2021-11-23 | 昆明理工大学 | Rock roadway large-diameter double-hole charging accurate time-delay hole-by-hole vertical cut blasting method |
| CN113686215B (en) * | 2021-09-09 | 2022-06-21 | 昆明理工大学 | Rock roadway large-diameter double-hole charging accurate time-delay hole-by-hole vertical cut blasting method |
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