CN102733621A - Blasting demolition method of buildings with hollow wall body and brick-concrete structure - Google Patents
Blasting demolition method of buildings with hollow wall body and brick-concrete structure Download PDFInfo
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- CN102733621A CN102733621A CN2012102577974A CN201210257797A CN102733621A CN 102733621 A CN102733621 A CN 102733621A CN 2012102577974 A CN2012102577974 A CN 2012102577974A CN 201210257797 A CN201210257797 A CN 201210257797A CN 102733621 A CN102733621 A CN 102733621A
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Abstract
The invention discloses a blasting demolition method of buildings with a hollow wall body and a brick-concrete structure. The blasting demolition method comprises the following steps that: 3.8cm blast holes are formed at the hollow bricks of the wall body to be destroyed; the blast holes are cinquefoil, the hole distance between two adjacent blast holes is 24cm, the row distance of two adjacent rows of blast holes is 24cm and each explosive package is arranged at each of different hollow bricks; detonators are inserted into the explosive packages, the explosive packages are wrapped with plastic bags to prevent separation of the detonators and the explosive packages and the explosive packages are fixed in the blast holes by wires; 25g explosive is put in each explosive package at the first floor and 20g explosive is put in each explosive package at the second floor and above; and the blast cut height is determined according to collapse mode. The method is simple and easy to carry out; and constructors can master and utilize the technology in short time, thus the construction time is shortened and the cost is lowered.
Description
Technical field
The present invention relates to the blasting demolishing method of building, especially the blasting demolishing method of hollow wall building with brick-concrete structure.
Background technology
The hollow wall building with brick-concrete structure is a kind of simple and easy building of the appearance in 70-80 age in last century; This building with brick-concrete structure shock resistance is relatively poor; And through using for many years crack has in various degree appearred; There is potential safety hazard, has been not suitable for living, also exist this type of a large amount of structural buildings to remove at present.As adopt artificial or mechanical removal, not only the construction period long, and on safety, also can not get assurance.Because demolition blasting has science, efficient, safe, civilized characteristics and used widely, therefore generally adopt the method for explosion that the house of this class formation is removed.
The hollow wall building with brick-concrete structure is to be formed by hollow brick and cement masonry, and collar tie beam and outrigger are generally arranged, and each floor and roofing are precast plate, wall thickness 24cm.The long 40cm of hollow brick list brick, high 18cm, wide 24cm, each hollow brick is divided into two hollow parts, and brick wall is thick to be 3cm.Therefore can't adopt the method for conventional drilling and blasting to remove, domestic once had unit to select for use room water-filling or manual work to build the water-filling pond by laying bricks or stones, and the technology that appropriate location suspension cartridge bag carries out hydraulic pressure demolition in water is removed this type of building; But because the room that is filled with water needs standard brick more, not only increased the expense of clearing, and water injection rate is more, water yield stool problems does not obtain fine solution yet after the explosion, and water resource waste is serious, never obtains promoting.
Can know that by analyzing above-mentioned existing hollow wall building with brick-concrete structure demolition blasting method obviously exists defective and deficiency, therefore need to explore new technology, carry out perfect.
Therefore, the present invention is in order to improve defective and the deficiency in the above-mentioned hollow wall building with brick-concrete structure demolition blasting process, through a large amount of engineering practices, proposed a kind of cavity charge explosion method for dismounting of reasonable in design, practicality easy and simple to handle.
Summary of the invention
To the defective and the deficiency of art methods, the present invention aims to provide a kind of blasting demolishing method of hollow wall building with brick-concrete structure, to guarantee in the demolition blasting process, reaching purpose safe, efficient, environmental protection.
For solving the problems of the technologies described above, the method that the present invention adopts comprises following operating procedure:
1, on the hollow brick of confirm destruction body of wall, offers the shot hole of 3.8cm;
2, adopt the quincunx shot hole that is provided with; The said quincunx shot hole that is provided with is that two explosive holes stagger in vertical direction each other; And go up explosive holes over against the center of arranging two shot hole lines down; Pitch-row is 24cm between adjacent two shot holes, and adjacent two explosive holes array pitch are 24cm, and each blasting charge is arranged in the different hollow bricks;
3, detonator is inserted in the blasting charge, and with the polybag parcel, prevent that detonator from separating with the blasting charge, the blasting charge is fixed in the shot hole with iron wire;
4, each packing explosive explosive 25g of Stall, each packing explosive explosive charge of second floor and the above floor of second floor is 20g;
5, confirm the explosion cut height according to the mode of collapsing.
Used explosive is an emulsion.
Adopt results in hollow wall building thing cavity charge explosion demolition technique; Promptly directly on hollow brick wall, cut a hole shot hole by hand; Be fixed on the explosive cartridge bag in the cavity of hollow brick then, the air in the detonation wave that the produces during explosive charge compression hollow brick forms air-shock wave, has the hollow brick wall of air-shock wave effect of huge energy and forms reflection stretching ripple; Thereby hollow brick wall splits and makes whole building unstability; Reach the purpose of demolition blasting, this technology of employing is economy but also efficient not only, and single cartridge bag is 20g～25g only; The energy that produces behind the explosive charge only can destroy the hollow brick wall around the cartridge bag, does not have more energy to be converted into blasting harm effects such as noise, air-shock wave.Adopt cavity charge explosion demolition technique scheme, simple, but constructor within a short period of time on top of should technology with operation, can the reduction of erection time with reduce cost.
Description of drawings
Fig. 1 is provided with sketch map for shot hole on hollow brick wall;
In the accompanying drawing: 1 shot hole, 2 hollow bricks.
The specific embodiment
As shown in Figure 1:
1 marks definite explosion incision tract with red paint on body of wall, dip in black ink with cotton rope simultaneously and eject single shot hole or the double shot hole horizon that will dig on the wall;
2, on the hollow brick 2 of confirm destruction, offer the shot hole 1 of 3.8cm;
3, detonator is inserted in the blasting charge; Each blasting charge powder charge 25g of Stall; Each packing explosive dose of second floor and the above floor of second floor is 20g, because the blasting charge is to be suspended in the air, if the overlong time blasting charge might be broken up the family with detonator and come off; Therefore inject the blasting charge to detonator and with pot foods bag parcel, fix No. 14 iron wires on the hollow brick of cartridge bag with the fixing blasting charge not laying;
4, adopt the quincunx shot hole 1 that is provided with; The said quincunx shot hole 1 that is provided with is that two explosive holes stagger in vertical direction each other; And go up explosive holes 1 over against the center of arranging two shot holes, 1 line down; The pitch-row that adjacent two shot holes are 1 is 24cm, and the array pitch of adjacent two explosive holes 1 is 24cm, and each blasting charge is arranged on the different hollow brick 2;
5, confirm the explosion cut height according to the mode of collapsing;
6, at Stall the outside, explosion position is filled up and rubber net covered protection with palm fibre, with iron wire be connected in aggregates with the rubber net each palm fibre pad.
Claims (1)
1. the blasting demolishing method of a hollow wall building with brick-concrete structure is characterized in that: comprise following operating procedure:
1, on the hollow brick (2) of confirm destruction body of wall, offers the shot hole (1) of 3.8cm;
2, adopt the quincunx shot hole (1) that is provided with; The said quincunx shot hole (1) that is provided with is that two explosive holes stagger in vertical direction each other; And go up explosive holes (1) over against the center of arranging two shot holes (1) line down; Pitch-row is 24cm between adjacent two shot holes (1), and adjacent two explosive holes (1) array pitch are 24cm, and each cartridge bag is arranged in the different hollow brick (2);
3, detonator is inserted in the blasting charge, and with the polybag parcel, prevent that detonator from separating with the blasting charge, the blasting charge is fixed on (1) in the big gun hole with iron wire;
4, each packing explosive explosive 25g of Stall, each packing explosive explosive charge of second floor and the above floor of second floor is 20g;
5, confirm the explosion cut height according to the mode of collapsing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102577974A CN102733621A (en) | 2012-07-25 | 2012-07-25 | Blasting demolition method of buildings with hollow wall body and brick-concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102577974A CN102733621A (en) | 2012-07-25 | 2012-07-25 | Blasting demolition method of buildings with hollow wall body and brick-concrete structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102733621A true CN102733621A (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012102577974A Pending CN102733621A (en) | 2012-07-25 | 2012-07-25 | Blasting demolition method of buildings with hollow wall body and brick-concrete structure |
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| CN (1) | CN102733621A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153597A (en) * | 2014-07-18 | 2014-11-19 | 张振堂 | Low-rise building demolishing method |
| CN105973084A (en) * | 2016-07-27 | 2016-09-28 | 宏大矿业有限公司 | Blasting hole stemming method for thin-wall concrete structure |
| CN115045459A (en) * | 2022-07-12 | 2022-09-13 | 河钢建筑工程有限公司 | Architectural decoration ceramic tile, paving and dismantling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4339995A (en) * | 1979-02-06 | 1982-07-20 | Messerschmitt-Bolkow-Blohm Gmbh | Method for destroying structures such as concrete walls |
| CN1556294A (en) * | 2004-01-12 | 2004-12-22 | 广东宏大爆破工程有限公司 | Reinforced concrete chimney folding blasting disassembling method |
| CN101967888A (en) * | 2010-10-20 | 2011-02-09 | 江苏江中集团有限公司 | Multidirectional multi-fold blasting method for high-rise building with frame-shear structure |
-
2012
- 2012-07-25 CN CN2012102577974A patent/CN102733621A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4339995A (en) * | 1979-02-06 | 1982-07-20 | Messerschmitt-Bolkow-Blohm Gmbh | Method for destroying structures such as concrete walls |
| CN1556294A (en) * | 2004-01-12 | 2004-12-22 | 广东宏大爆破工程有限公司 | Reinforced concrete chimney folding blasting disassembling method |
| CN101967888A (en) * | 2010-10-20 | 2011-02-09 | 江苏江中集团有限公司 | Multidirectional multi-fold blasting method for high-rise building with frame-shear structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153597A (en) * | 2014-07-18 | 2014-11-19 | 张振堂 | Low-rise building demolishing method |
| CN104153597B (en) * | 2014-07-18 | 2016-08-24 | 张振堂 | A kind of low floor building demolition method |
| CN105973084A (en) * | 2016-07-27 | 2016-09-28 | 宏大矿业有限公司 | Blasting hole stemming method for thin-wall concrete structure |
| CN105973084B (en) * | 2016-07-27 | 2018-01-30 | 宏大矿业有限公司 | A kind of thin wall concrete structure blasting hole obstruction method |
| CN115045459A (en) * | 2022-07-12 | 2022-09-13 | 河钢建筑工程有限公司 | Architectural decoration ceramic tile, paving and dismantling method |
| CN115045459B (en) * | 2022-07-12 | 2023-10-24 | 河北大河钢构科技有限公司 | Building decoration ceramic tile, paving and dismantling method |
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Application publication date: 20121017 |