CN203489797U - Deep foundation pit blasting device capable of guaranteeing slope stability - Google Patents
Deep foundation pit blasting device capable of guaranteeing slope stability Download PDFInfo
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- CN203489797U CN203489797U CN201320532134.9U CN201320532134U CN203489797U CN 203489797 U CN203489797 U CN 203489797U CN 201320532134 U CN201320532134 U CN 201320532134U CN 203489797 U CN203489797 U CN 203489797U
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- blasting
- deep foundation
- deep basal
- basal pit
- slope stability
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Abstract
The utility model discloses a deep foundation pit blasting device capable of guaranteeing slope stability. The device comprises a plurality of blasting units and a plurality of deep foundation pits. The plurality of deep foundation pits are distributed at intervals in an area to be blasted, one blasting unit is arranged in each deep foundation pit, a time firing module is arranged on each blasting unit, and the firing time of the plurality of blasting units are arranged according to an arithmetic progression. According to the device, certain phase differences are provided for blasting vibration waves formed by the different blasting units, resonance is prevented, and the different blasting vibration waves are offset to certain degree, so that damage caused to the slope by the blasting vibration is greatly reduced, rapid excavation is achieved on the premise that economy is guaranteed.
Description
Technical field
The utility model relates to subway work servicing unit field, relates in particular a kind of deep basal pit demolition set of guaranteeing slope stability.
Background technology
Carry out such as subway etc. compared with the work progress of large-engineering in; normal inhabitation in order to ensure near people's normal current and resident; the side slope that conventionally all need to be comprised of rock etc. in the periphery setting of construction region, utilizes the characteristic that separates of this side slope, thereby plays a protective role.
As a rule earth's surface is from outward appearance to inner essence generally followed successively by plain fill layer, remains farinose argillic horizon and slate layer, in the process of construction subway station, due to more than the depth of subway station often reaches 10m, therefore unavoidably can run into slate layer, generally all need to carry out repeatedly explosion for the excavation of slate layer and can reach construction object.
But; because the blasting vibration of Blasting Excavation engineering can relate to the communication process of Around environment and rock soil medium; be easily corrupted to the stability of side slope and affect construction continue carry out; thus how under complicated surrounding enviroment and execution conditions; can carry out economical, rapidly Blasting Excavation; can make again object of protection institute influenced in engineering tolerance band, become urgent problem in the industry.
In view of this, the inventor, for the above-mentioned defect further investigation of existing Blasting Excavation, has this case to produce then.
Utility model content
The purpose of this utility model is to provide a kind of deep basal pit demolition set of guaranteeing slope stability, greatly reduces the impact bringing to side slope based on blasting vibration, has been issued to the effect of Rapid Excavation in the prerequisite of guaranteeing economy.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of deep basal pit demolition set of guaranteeing slope stability, wherein, comprise a plurality of blasters and a plurality of deep basal pit, the plurality of deep basal pit is distributed in region to be blasted, in each deep basal pit, be provided with a blaster, each blaster is provided with time fire module, and the ignition time of a plurality of blasters arranges by arithmetic progression.
Further, the ignition time difference of this adjacent blaster is 70ms.
Further, the plurality of blaster all adopts millisecond detonator.
Adopt after said structure, a kind of deep basal pit demolition set of guaranteeing slope stability that the utility model relates to, it is by making the ignition time of a plurality of blasters arrange by arithmetic progression, so make the formed blasting vibration wave of a plurality of demolition sets there is certain phase difference, it has avoided the generation of resonance on the one hand, also make to produce between different blasting vibration wave certain counteracting, greatly reduce the damage that blasting vibration brings to side slope, guarantee that the prerequisite of economy has been issued to the effect of Rapid Excavation.
Accompanying drawing explanation
Fig. 1 is that the utility model relates to and can guarantee that the deep basal pit demolition set of slope stability is laid in the schematic diagram in a square region to be blasted;
Fig. 2 is the concrete process chart of construction that the utility model relates to the deep basal pit demolition set that can guarantee slope stability.
In figure:
Blaster 1 deep basal pit 2
Region S to be blasted.
The specific embodiment
In order further to explain the technical solution of the utility model, below by specific embodiment, the utility model is elaborated.
As shown in Figure 1, a kind of deep basal pit demolition set of guaranteeing slope stability that the utility model relates to, comprise a plurality of blasters 1 and a plurality of deep basal pit 2, the plurality of deep basal pit 2 is distributed in region S to be blasted, in each deep basal pit 2, be provided with a blaster 1, each blaster 1 is provided with time fire module, and the ignition time of a plurality of blasters 1 arranges by arithmetic progression.
In the present embodiment, this blaster 1 and deep basal pit 2 are all set to 4; Preferably, the ignition time difference of this adjacent blaster 1 is 70ms, so makes to offset and reach maximum between blasting vibration wave each other, has the most weak injury.The plurality of blaster 1 all adopts millisecond detonator, so utilizes the time fire module carrying in millisecond detonator to realize automatically and ignites.
Like this, a kind of deep basal pit demolition set of guaranteeing slope stability that the utility model relates to, it is by making the ignition time of a plurality of blasters 1 arrange by arithmetic progression, so make the formed blasting vibration wave of a plurality of demolition sets there is certain phase difference, it has avoided the generation of resonance on the one hand, also make to produce certain counteracting between different blasting vibration wave, greatly reduce the damage that blasting vibration brings to side slope, guarantee that the prerequisite of economy has been issued to the effect of Rapid Excavation.
As shown in Figure 2, schematic diagram when it is concrete excavation, it adopts shallow bore hole " V " type Cut Blasting, forms the groove of certain depth and length, has had behind the side direction scope of freedom, at groove two sidetracking straight holes, carry out small stair standing again, because deep basal pit 2 length of shot are larger, explosion needs layering to carry out, and blasting sequence is " slotting-step ", excavation blasting sequence is A-B-C-D-E-F, and wherein realize by the mode of a plurality of blasters 1 and deep basal pit 2 is set in each region.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present utility model.
Claims (3)
1. can guarantee the deep basal pit demolition set of slope stability, it is characterized in that, comprise a plurality of blasters and a plurality of deep basal pit, the plurality of deep basal pit is distributed in region to be blasted, in each deep basal pit, be provided with a blaster, each blaster is provided with time fire module, and the ignition time of a plurality of blasters arranges by arithmetic progression.
2. the deep basal pit demolition set of guaranteeing slope stability as claimed in claim 1, is characterized in that, the ignition time difference of this adjacent blaster is 70ms.
3. the deep basal pit demolition set of guaranteeing slope stability as claimed in claim 1, is characterized in that, the plurality of blaster all adopts millisecond detonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532134.9U CN203489797U (en) | 2013-08-29 | 2013-08-29 | Deep foundation pit blasting device capable of guaranteeing slope stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532134.9U CN203489797U (en) | 2013-08-29 | 2013-08-29 | Deep foundation pit blasting device capable of guaranteeing slope stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203489797U true CN203489797U (en) | 2014-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532134.9U Expired - Fee Related CN203489797U (en) | 2013-08-29 | 2013-08-29 | Deep foundation pit blasting device capable of guaranteeing slope stability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203489797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623740A (en) * | 2022-04-15 | 2022-06-14 | 广西中爆电子科技有限公司 | Blasting method for protecting side slope by electronic detonator delay time |
-
2013
- 2013-08-29 CN CN201320532134.9U patent/CN203489797U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623740A (en) * | 2022-04-15 | 2022-06-14 | 广西中爆电子科技有限公司 | Blasting method for protecting side slope by electronic detonator delay time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20160829 |