CN1046385A - Directional blasting, techniques for opening building with big ratio of height to width - Google Patents
Directional blasting, techniques for opening building with big ratio of height to width Download PDFInfo
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- CN1046385A CN1046385A CN 90105118 CN90105118A CN1046385A CN 1046385 A CN1046385 A CN 1046385A CN 90105118 CN90105118 CN 90105118 CN 90105118 A CN90105118 A CN 90105118A CN 1046385 A CN1046385 A CN 1046385A
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Abstract
A kind of directional blasting, techniques for opening building with big ratio of height to width that is used for industry, civilian and military facility dismounting operation.Its key point is an orientation notch, exactly large ratio of height to width building bottom symmetry is chiseled two right angled triangle otch.Adopt this technology can be when demolition blasting large ratio of height to width building (for example chimney etc.) its toppling direction of pin-point accuracy ground control, guarantee the success and the safety of constructing.This technical matters is easy, is easy to grasp implement, and expensive few, be suitable for to promote and adopt.
Description
The present invention relates to a kind of directional blasting, techniques for opening building with big ratio of height to width that is used for industry, civilian and military facility dismounting operation.
Rather difficult and arduous evolution has been experienced in the operation of large ratio of height to width demolishing buildings.That the most generally adopts at first, is the scaffold method and tears the brick jack rafter open and burn method.These two kinds of methods are long in time limit, and are expensive many, and dangerous.Afterwards, begin to adopt blasting procedure, this method has had qualitative leap than the former, but has limitation, in the place unopen or contiguous have when being afraid of to collide facility just can not adopt.At present, extensively the directioning falling method that adopts has solved the problems referred to above to a certain extent, and during by this method operation, the large ratio of height to width building can be toppled over impact ground by predetermined direction and be disintegrated.Yet this method still need be selected the bigger scope of collapsing (generally between heart angle, 15-30 ° of garden), makes its application be subjected to certain limitation.In order to make building swing to accurately, also need to assist with cable traction, even so, in construction, remove object and still may collapse by the off-design toppling direction, even have an accident.
Task of the present invention provides a kind of otch directional blasting demolishment technology, utilize this kind technology demolition blasting large ratio of height to width building (for example chimney etc.) can the control of pin-point accuracy ground its swing to, guarantee that construction is expensive few, and safety is smoothly.
Key point of the present invention is an orientation notch, exactly large ratio of height to width building bottom symmetry is chiseled two right angled triangle otch (being called orientation notch).If the horizontal line of two right angled triangle otch rear tips is called otch directioning falling axis, then the zone between two orientation notch rear tips is the directed supporting area of otch, and the folded zone of two right-angle sides is an otch directional blasting dumping ground.After the technology of detonating that adopts the Yang Renguang of the Chinese Academy of Sciences to teach was scraped above-mentioned otch directional blasting dumping ground, this building was just toppled over by the design toppling direction line of toppling over axis perpendicular to orientation notch under the unstability moment loading that its deadweight produces.
The technology that the present invention relates to can guarantee the accuracy of large ratio of height to width structure demolition toppling direction, guarantees to remove the smooth safety of operation.This technical matters is easy, be easy to grasp implement, and construction is expensive less, is suitable for extensive employing.
Fig. 1 is that orientation notch is arranged schematic diagram when enforcement is of the present invention.
Fig. 2 topples over journal offset for otch influences schematic diagram to the building toppling direction.
Below in conjunction with accompanying drawing enforcement of the present invention is elaborated.
When adopting the present invention to construct, can carry out according to the following steps:
1, determines the toppling direction of building according to designing requirement.Promptly look building surrounding environment and job site actual conditions, the position and the direction of the thing that collapses are toppled over and held to the selected building that can guarantee smoothly;
2, center line is toppled in definite design.Along above-mentioned predetermined toppling direction,, estimate then erectting two thin bars that basset about 1m respectively and serve as a mark over against this building bottom 20-30m distance is interior.Sight line extends to the building bottom by two vertical rod summits, intersects with the building longitudinal axis, connects at 3 in line, and this line is that center line is toppled in design;
3, make orientation notch.The layout of otch and accuracy of excavation directly influence the accuracy of toppling direction, and be most important to the construction success or failure.Should make its height apart from basis, ground 30-60cm when arranging incision site, two right angled triangle orientation notch rear tips must be on the same horizontal plane, be symmetrically distributed in design and topple over center line both sides and perpendicular with it (, will cause the toppling direction skew) if slightly inclination angle or skew are arranged.Should make its heart angle, rear tip garden when digging otch is 120 °, and the otch size is the 30-40 ° of corresponding arc length in heart angle, garden, and short, long limit ratio was generally 1: 3, and otch should be made smoothly as far as possible.This kind otch is general to be made one group (i.e. right angled triangle of 2 symmetries) and get final product, in case of necessity can be along two or three groups of the vertical making of building, collapsiblely topple over to form;
4, charge detonates.According to parameters such as building ultimate bending strength and forward unstability moments of flexure, carry out according to the poplar people of Chinese Academy of Sciences light blasting energy criterion and powder charge cloth hole and the technology of detonating.
Utilize of the invention process one routine site operation to make good progress, produce a desired effect, proved the reliability of this technology.The implementation date of this example is on April 30th, 1989, demolition blasting to as if the brick laid with mortar chimney of the high 35m in Liaohe Oil Field, ground installation and building are more around it, have only the north, northwest to there being a limited open ground can hold the cylindrical shell thing that collapses.Otch directional blasting technology provided by the invention is adopted in construction, is undertaken by above-mentioned processing step.With the 1.34kg ammonpulver otch directioning falling district cylindrical shell of having scraped, cylindrical shell rotates around the otch orientation axes topples over center line along design and collapses and impact ground and disintegrate, and will bang in the ground as two vertical rods toppling over the center line mark.This chimney one side all stands intact at a distance of 5m send heating coil line and high-tension bus-bar far away, and opposite side is not shatter at a distance of one in the factory building glass of about 6m yet, the construction success.
Claims (2)
1, a kind of directional blasting, techniques for opening building with big ratio of height to width is characterized in that before powder charge is ignited earlier chiseling one group (two) or 2-3 organizes the right angled triangle orientation notch that has certain requirements in building bottom suitable position symmetry.
2, directional blasting, techniques for opening building with big ratio of height to width according to claim 1, it is characterized in that this technology comprises definite toppling direction, determines to design steps such as toppling over center line, making orientation notch and charge detonates, each step all should be carried out respectively on request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105118 CN1046385A (en) | 1990-05-21 | 1990-05-21 | Directional blasting, techniques for opening building with big ratio of height to width |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105118 CN1046385A (en) | 1990-05-21 | 1990-05-21 | Directional blasting, techniques for opening building with big ratio of height to width |
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| Publication Number | Publication Date |
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| CN1046385A true CN1046385A (en) | 1990-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 90105118 Pending CN1046385A (en) | 1990-05-21 | 1990-05-21 | Directional blasting, techniques for opening building with big ratio of height to width |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333144C (en) * | 2005-10-31 | 2007-08-22 | 曲昕 | Directioning falling and detaching method for chimney-like building |
| CN103278145A (en) * | 2013-05-29 | 2013-09-04 | 安庆市向科爆破工程技术有限公司 | Auxiliary orienting device for civil blasting operation field and using method thereof |
| CN103292648A (en) * | 2013-06-04 | 2013-09-11 | 山西汾西矿业（集团）有限责任公司 | Blasting cartridge type directional blasting process for chimneys of brick-concrete structures |
| CN103968815A (en) * | 2014-05-26 | 2014-08-06 | 安庆市向科爆破工程技术有限公司 | Cylinder collapse center line positioning device |
| CN108981509A (en) * | 2018-07-24 | 2018-12-11 | 浙江利化爆破工程股份有限公司 | The blasting demolishing method of Brick-structural Chimney under a kind of complex environment |
| CN110520582A (en) * | 2017-04-13 | 2019-11-29 | 贝斯特罗株式会社 | That has applied flexibly the tower-like building of basic courses department pushes over method |
| CN110553560A (en) * | 2019-09-11 | 2019-12-10 | 辽宁工程技术大学 | Blasting demolition method for building |
-
1990
- 1990-05-21 CN CN 90105118 patent/CN1046385A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333144C (en) * | 2005-10-31 | 2007-08-22 | 曲昕 | Directioning falling and detaching method for chimney-like building |
| CN103278145A (en) * | 2013-05-29 | 2013-09-04 | 安庆市向科爆破工程技术有限公司 | Auxiliary orienting device for civil blasting operation field and using method thereof |
| CN103278145B (en) * | 2013-05-29 | 2016-01-20 | 安庆市向科爆破工程技术有限公司 | Civil blast operation field auxiliary directional device and using method thereof |
| CN103292648A (en) * | 2013-06-04 | 2013-09-11 | 山西汾西矿业（集团）有限责任公司 | Blasting cartridge type directional blasting process for chimneys of brick-concrete structures |
| CN103292648B (en) * | 2013-06-04 | 2015-06-10 | 山西汾西矿业（集团）有限责任公司 | Blasting cartridge type directional blasting process for chimneys of brick-concrete structures |
| CN103968815A (en) * | 2014-05-26 | 2014-08-06 | 安庆市向科爆破工程技术有限公司 | Cylinder collapse center line positioning device |
| CN110520582A (en) * | 2017-04-13 | 2019-11-29 | 贝斯特罗株式会社 | That has applied flexibly the tower-like building of basic courses department pushes over method |
| CN108981509A (en) * | 2018-07-24 | 2018-12-11 | 浙江利化爆破工程股份有限公司 | The blasting demolishing method of Brick-structural Chimney under a kind of complex environment |
| CN110553560A (en) * | 2019-09-11 | 2019-12-10 | 辽宁工程技术大学 | Blasting demolition method for building |
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