CN202247902U - Millisecond controlled blasting demolishing structure for foundation pit inner support beam - Google Patents
Millisecond controlled blasting demolishing structure for foundation pit inner support beam Download PDFInfo
- Publication number
- CN202247902U CN202247902U CN 201120325950 CN201120325950U CN202247902U CN 202247902 U CN202247902 U CN 202247902U CN 201120325950 CN201120325950 CN 201120325950 CN 201120325950 U CN201120325950 U CN 201120325950U CN 202247902 U CN202247902 U CN 202247902U
- Authority
- CN
- China
- Prior art keywords
- foundation ditch
- brace summer
- big gun
- foundation pit
- gun hole
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model discloses a millisecond controlled blasting demolishing structure for a foundation pit inner support beam, which comprises a foundation pit inner support beam (1), at least 2 blasting explosive filling blasting holes (2) are formed on the foundation pit inner support beam (1) along the length direction of the foundation pit inner support beam (1), the shortest edge distance (W) from the center of each blasting explosive filling blasting hole to the edge of the foundation pit inner support beam (1) is smaller than or equal to one half of the width (B) of the foundation pit inner support beam (1) and bigger than one quarter of the width (B) of the foundation pit inner support beam (1); and the distance between the centers of each two adjacent explosive filling blasting holes (2) is 1.0 to 1.5 times the shortest edge distance (W). Besides high construction efficiency and convenient and quick operation, the structure also has the advantages of allowing for convenient, clean and complete slag removable, effectively ensuring the safety of the foundation pit and progress of construction and the like. The structure disclosed by the utility model is particularly suitable for blasting based on the conventional millisecond controlled delay blasting technology.
Description
Technical field
The utility model relates to the elementary errors controlled blasting dismounting structure of brace summer in a kind of foundation ditch concrete, belongs to the interior brace summer demolition technique field of foundation ditch concrete of building.
Background technology
At present, the deep foundation ditch of most of buildings adopts inner supporting body system, and the security performance of foundation ditch is had good guaranteeing role, but in structure construction procedure, and the dismounting of brace summer but is a complicated step comparatively together in the concrete.In conventional art; Often adopt the mode of static(al) explosion or artificial cutting to remove to the dismounting of brace summer in the foundation ditch; This dismounting mode operates and exists equipment that need to drop into and problems such as manpower is more, execute-in-place is difficult, the cost duration is grown, efficiency of construction is low; Particularly, seriously the construction needs can not have been satisfied to the building trade development that improves efficiency of construction.
Summary of the invention
The purpose of the utility model is: provide a kind of and remove quick, safety, the later stage cleaning is convenient and practice thrift the elementary errors controlled blasting dismounting structure of brace summer in the foundation ditch concrete of removing cost, to overcome the deficiency of prior art.
The utility model is to constitute like this: the elementary errors controlled blasting dismounting structure of brace summer in a kind of foundation ditch concrete of the utility model; Comprise brace summer in the foundation ditch concrete; In the foundation ditch concrete, be provided with at least 2 explosions on its length direction of brace summer upper edge with filling out medicine big gun hole, each center of filling out medicine big gun hole short distance at brace summer edge in the foundation ditch concrete be less than or equal to brace summer width in the foundation ditch concrete 1/2nd and greater than 1/4th of brace summer width in the foundation ditch concrete; Per two adjacent centre distances of filling out between the medicine big gun hole are 1.0～1.5 times of short distance.
The height that above-mentioned each hole depth of filling out medicine big gun hole equals brace summer in the foundation ditch concrete deducts the difference of short distance.
Above-mentioned each diameter of filling out medicine big gun hole is more than or equal to 30 millimeters.
In the foundation ditch concrete, be provided with 1～3 row explosion on its width of brace summer upper edge with filling out medicine big gun hole, and the quantity of filling out medicine big gun hole of every row is more than or equal to 2.
Fill out at each and to be placed with two sections explosives in the medicine big gun hole, be separated with between two sections explosives to stop up and be plugged with the aperture and stop up at the place, aperture of filling out medicine big gun hole.
Owing to adopted technique scheme, the utility model can be accomplished brace summer in the foundation ditch concrete is removed construction task under the situation that guarantees safety efficiently.The utility model compared with prior art, the utility model not only have the efficiency of construction height, easy to operate, have a few efficiently, but also have the scarfing cinder facility, clean thoroughly, and can effectively guarantee advantages such as foundation ditch safety and construction speed.The structure of the utility model is particularly suitable for adopting existing elementary errors control time-delay detonating technique to carry out explosion.
Description of drawings
Structural representation when Fig. 1 uses for the utility model;
Fig. 2 is the A-A sectional structure sketch map of Fig. 1.
Description of reference numerals: brace summer in the 1-foundation ditch concrete, 2-fills out medicine big gun hole, 3-explosive; 4-stops up, and the 5-aperture is stopped up, the two detonator propagation of explosion detonators of sending out of 6-; The width of brace summer in the B-foundation ditch concrete, two of D-are adjacent fills out the centre distance between the medicine big gun hole 2, and W-fills out the short distance at brace summer edge in the foundation ditch concrete, center, medicine big gun hole; L-fills out the hole depth in medicine big gun hole, supports depth of beam in the H-foundation ditch concrete.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
The embodiment of the utility model: when brace summer 1 is removed construction in to the foundation ditch concrete; Adopt the elementary errors controlled blasting dismounting structure of the interior brace summer of foundation ditch concrete of the utility model to construct; That produces on its length direction of brace summer 1 upper edge in existing foundation ditch concrete earlier promptly that at least 2 explosions use fills out medicine big gun hole 2; Filling out the concrete number in medicine big gun hole 2 can confirm according to the length and the width B of brace summer 1 in the foundation ditch concrete; Width size according to brace summer 1 in the foundation ditch concrete; Can 1～3 row explosion be set on its width of brace summer 1 upper edge in the foundation ditch concrete with filling out medicine big gun hole 2; And with the quantity of filling out medicine big gun hole 2 of every row all more than or equal to 2, during making, make each center of filling out medicine big gun hole 2 short distance W at brace summer 1 edge in the foundation ditch concrete be less than or equal to brace summer 1 width B in the foundation ditch concrete 1/2nd and greater than 1/4th of brace summer 1 width B in the foundation ditch concrete; Make per two adjacent centre distance D that fill out between the medicine big gun hole 2 be 1.0～1.5 times of short distance W; The hole depth L that makes each fill out medicine big gun hole 2 equals the difference (being L=H-W) that the height H of brace summer 1 in the foundation ditch concrete deducts short distance W; The diameter of filling out medicine big gun hole 2 is made into more than or equal to 30 millimeters; Fill out at each then and place two sections explosives 3 in the medicine big gun hole 2; And between two sections explosives 3, adopt obstruction 4 to separate; The length of stopping up 4 is controlled between 13～17cm, then at each place, aperture of filling out medicine big gun hole 2 with the aperture stop up 5 block (stop up 4 stop up 5 can adopt microlith to make) with the aperture.
When the structure of use the utility model is carried out demolition blasting, can directly adopt existing elementary errors time-delay detonating technique to carry out explosion and get final product.Can, each select two detonator propagation of explosion blasting cap initiation explosives of sending out in filling out medicine big gun hole 2 for use; To directly be bundled in two detonator propagation of explosion detonators 6 formation electric detonator initiation networkings of sending out from filling out the detonator of drawing in medicine big gun hole 2; This networking connects the stack that both can prevent concussion of blasting, can guarantee the accuracy of propagation of explosion again.After connecting detonating cord by initiation net figure during explosion, and after on request explosion face being covered, can implement explosion.Vibration by explosion causes is relevant with the single hop explosive quantity, can calculate by following conventional formula:
V=KKl（Q
/R）
In the formula: V--object of protection location particle shakes safe permissible velocity, gets V=2cm/s;
K, a--and blow-up point are to relevant coefficient and the damped expoential of calculating between object of protection of landform, geological conditions;
R---blasting vibration safety allows distance (m);
Q--single hop explosive quantity (kg);
The K1---reduction coefficient.
Claims (5)
1. the elementary errors controlled blasting dismounting structure of brace summer in the foundation ditch concrete; Comprise brace summer (1) in the foundation ditch concrete; It is characterized in that: be provided with at least 2 explosions on its length direction of brace summer in the foundation ditch concrete (1) upper edge with filling out medicine big gun hole (2), each center of filling out medicine big gun hole (2) short distance (W) at brace summer (1) edge in the foundation ditch concrete be less than or equal to brace summer (1) width (B) in the foundation ditch concrete 1/2nd and greater than 1/4th of brace summer (1) width (B) in the foundation ditch concrete; Per two adjacent centre distances (D) of filling out between the medicine big gun hole (2) are 1.0～1.5 times of short distance (W).
2. the elementary errors controlled blasting dismounting structure of brace summer in the foundation ditch concrete according to claim 1 is characterized in that: the height (H) that each hole depth (L) of filling out medicine big gun hole (2) equals brace summer (1) in the foundation ditch concrete deducts the difference of short distance (W).
3. the elementary errors controlled blasting dismounting structure of brace summer in the foundation ditch concrete according to claim 1, it is characterized in that: the diameter of filling out medicine big gun hole (2) is more than or equal to 30 millimeters.
4. the elementary errors controlled blasting dismounting structure of brace summer in the foundation ditch concrete according to claim 1; It is characterized in that: be provided with 1～3 row explosion on its width of brace summer in the foundation ditch concrete (1) upper edge with filling out medicine big gun hole (2), and the quantity of filling out medicine big gun hole (2) of every row is more than or equal to 2.
5. the elementary errors controlled blasting dismounting structure of brace summer in the foundation ditch concrete according to claim 1; It is characterized in that: fill out at each and be placed with two sections explosives (3) in the medicine big gun hole (2); Be separated with obstruction (4) between two sections explosives (3), and be plugged with aperture obstruction (5) at the place, aperture of filling out medicine big gun hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120325950 CN202247902U (en) | 2010-11-24 | 2011-09-01 | Millisecond controlled blasting demolishing structure for foundation pit inner support beam |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020622371.0 | 2010-11-24 | ||
| CN201020622371 | 2010-11-24 | ||
| CN 201120325950 CN202247902U (en) | 2010-11-24 | 2011-09-01 | Millisecond controlled blasting demolishing structure for foundation pit inner support beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202247902U true CN202247902U (en) | 2012-05-30 |
Family
ID=46109164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120325950 Expired - Fee Related CN202247902U (en) | 2010-11-24 | 2011-09-01 | Millisecond controlled blasting demolishing structure for foundation pit inner support beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202247902U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164879A (en) * | 2013-05-16 | 2014-11-26 | 辛鹏 | Wall footing and foundation pit support dismantling device |
| CN105507611A (en) * | 2015-12-18 | 2016-04-20 | 上海建工七建集团有限公司 | Method for dismantling bottom boards in existing deep foundation pit |
| CN106049503A (en) * | 2016-06-06 | 2016-10-26 | 武汉科技大学 | Pretreatment method for blasting demolition of reinforced concrete supporting beam in foundation pit |
| CN109235926A (en) * | 2018-10-19 | 2019-01-18 | 洛阳理工学院 | Reinforced concrete frame structure unidirectionally collapses the construction method of the anti-back seat of demolition blasting |
| CN110158609A (en) * | 2019-05-28 | 2019-08-23 | 中铁十一局集团城市轨道工程有限公司 | A kind of mechanization demolition reduction method of reinforced concrete brace in foundation pit |
-
2011
- 2011-09-01 CN CN 201120325950 patent/CN202247902U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164879A (en) * | 2013-05-16 | 2014-11-26 | 辛鹏 | Wall footing and foundation pit support dismantling device |
| CN104164879B (en) * | 2013-05-16 | 2016-06-29 | 辛鹏 | A kind of wall base and pattern foundation pit supporting structure remove device |
| CN105507611A (en) * | 2015-12-18 | 2016-04-20 | 上海建工七建集团有限公司 | Method for dismantling bottom boards in existing deep foundation pit |
| CN106049503A (en) * | 2016-06-06 | 2016-10-26 | 武汉科技大学 | Pretreatment method for blasting demolition of reinforced concrete supporting beam in foundation pit |
| CN106049503B (en) * | 2016-06-06 | 2017-11-10 | 武汉科技大学 | The preprocess method of reinforced concrete brace demolition blasting in a kind of foundation ditch |
| CN109235926A (en) * | 2018-10-19 | 2019-01-18 | 洛阳理工学院 | Reinforced concrete frame structure unidirectionally collapses the construction method of the anti-back seat of demolition blasting |
| CN110158609A (en) * | 2019-05-28 | 2019-08-23 | 中铁十一局集团城市轨道工程有限公司 | A kind of mechanization demolition reduction method of reinforced concrete brace in foundation pit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202247902U (en) | Millisecond controlled blasting demolishing structure for foundation pit inner support beam | |
| CN101967888A (en) | Multidirectional multi-fold blasting method for high-rise building with frame-shear structure | |
| CN113279622B (en) | Method for dismantling thin-wall reinforced concrete chimney through high-notch blasting | |
| CN109029167A (en) | Foundation pit V-type Cut Blasting method | |
| CN102535877A (en) | Building blasting demolition method | |
| CN103292648B (en) | Blasting cartridge type directional blasting process for chimneys of brick-concrete structures | |
| CN106839906B (en) | The directional blasting demolishment method of armored concrete tubular structure towering structure | |
| CN112983047B (en) | Static cutting demolition method suitable for blasting demolition | |
| CN105423832A (en) | Blast construction method of orientation window of thick-wall brick chimney | |
| CN102818485B (en) | High slope sunken layered blasting relief method | |
| CN110196002B (en) | Safe and efficient blasting construction method for vertical shaft wall beam nest | |
| CN113091541B (en) | Low-vibration blasting diaphragm wall dismantling construction method | |
| CN203203487U (en) | Device of utilizing detonating pipes to buffer millisecond detonation damping | |
| CN204495211U (en) | A kind of blasting hole arrangement system of tunnel open excavation section | |
| CN106088098A (en) | Supporting removal construction method | |
| CN110332861B (en) | Blasting construction method for controlling urban subway complex environment | |
| CN108088338A (en) | A kind of Pile Diameter is the bridge cylinder pile foundation blasting method of 1.1-1.3m | |
| CN103422494B (en) | Multi-layer rock original position drilling by blasting method and device in castinplace pile | |
| CN102980453B (en) | Water injection drilling and blasting method for unloading stress of structural strong rock burst area of horizontal structural surface | |
| CN107339921A (en) | A kind of subway foundation pit blasting method | |
| CN104819671B (en) | The depositing dust of a kind of structure demolition dismounting and shock-dampening method | |
| CN103185491B (en) | Stress relieving blasting method for side wall rock pillar type rock burst of two synchronously tunneling deeply-buried tunnels | |
| CN112923820B (en) | Perforation charge explosion method suitable for blasting demolition of middle upright column | |
| KR101318362B1 (en) | Blasting method for tunnel | |
| CN107843160A (en) | A kind of initiation net of deep foundation pit reinforced concrete support beam demolition blasting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20160901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |