CN103233589A - Method for dismantling chimney by means of rope sawing and cutting method - Google Patents
Method for dismantling chimney by means of rope sawing and cutting method Download PDFInfo
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- CN103233589A CN103233589A CN2013101582289A CN201310158228A CN103233589A CN 103233589 A CN103233589 A CN 103233589A CN 2013101582289 A CN2013101582289 A CN 2013101582289A CN 201310158228 A CN201310158228 A CN 201310158228A CN 103233589 A CN103233589 A CN 103233589A
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Abstract
The invention discloses a method for dismantling a chimney by means of a rope sawing and cutting method. The method comprises the following steps of (1) calibrating a collapse central line, an oriented collapse cut, an oriented window cut and a position of a reserved column; (2) drilling a penetrating hole and a central hole; (3) obtaining cut blocks from two sides of the reserved column in a cutting mode, using supporting members to support the upper portions and the lower portions of notches at the notch positions where the cut blocks are located, and using a positioning device to enable the supporting members and the chimney to be fixedly connected; (4) using the reserved column as the center and dismantling the supporting members; and (5) enabling the chimney to crush the reserved column and then topple and fall according to the preset direction after a last group of supporting members is dismantled. The high and large chimney can be dismantled by means of the method, explosion apparatuses are not used, and accordingly a history that the high and large chimney can not be dismantled without the explosion apparatuses in out country is ended. Due to the fact that all of workers, mechanical devices and the like are outside of a safe distance when the chimney collapses, the safety can be ensured.
Description
Technical field
The present invention relates to a kind of method of removing chimney, being specifically related to a kind of is the method for dismountable chimney without explosive.
Background technology
To the thin and high building of this class of chimney, want to make it to collapse according to the direction that people are scheduled to, the method of taking both at home and abroad at present is that an explosion otch is produced with the method for explosion in the position that the bottom (or middle) at chimney is symmetrical in the predetermined both sides of falling the center line, incision length is greater than 1/2 of chimney bottom outer perimeter, is generally the 3/5-2/3 of bottom outer perimeter.Like this, after the explosion otch formed, the chimney barrel on otch top will be unsettled because losing support, and the center of gravity of chimney will outwards produce skew.At this moment, chimney will outwards be offset unstability because of center of gravity, produces a directioning falling moment of flexure at it under the effect of heavy load, and chimney produces orientation and collapses under the effect of directioning falling moment of flexure.
Cause easily in the time of the explosion method explosion blasting vibration and blasting flyrock to around personnel etc. cause damage, the explosive that must use simultaneously is national restricted articles, need be through much examining, examine formality, process is loaded down with trivial details, also there is bigger potential safety hazard in explosive in the process of depositing and transporting for long-distance.
Summary of the invention
Danger coefficient was big when the technical problem to be solved in the present invention was explosion method dismounting chimney, examination and approval procedures are loaded down with trivial details, and a kind of method of removing chimney with rope saw patterning method is provided, and did not need to use explosive in the demolishing process, can reduce or remit examination and approval procedures, reduced potential safety hazard.
Technical scheme of the present invention realizes in the following manner: a kind of method of removing chimney with rope saw patterning method, carry out according to following step:
(1) chimney calibrate the center line that collapses, orientation collapse otch, directed window otch, reserve the position of column, the collapse length overall of otch of orientation is 3/5 ~ 2/3 of chimney bottom outer perimeter;
(2) drill open-work and centre bore four jiaos of cutting cube and center, the summit of directed window otch also drills open-work;
(3) from reserving the column both sides, cut out cutting cube with the rope saw along the orientation otch that collapses, about the notch place at cutting cube place usefulness support member support notch, and with positioner supporting member and chimney are fixedly linked;
(4) centered by the reservation column, symmetrical begins to remove supporting member from the right and left;
(5) remove supporting member, after last group supporting member dismounting is finished, chimney will be reserved column and damage by pressure, and chimney is toppled over according to preestablishing direction afterwards.
The supporting member of using in the described step (3) is cut next cutting cube, cutting cube is to support notch in the following manner: at central hole fixed band huckbolt, cut edge, both sides and the lower edge of the directed otch that collapses in the time of cutting earlier, cutting the back wraps the cutting cube lower edge with iron sheet, pad upper steel plate bar between cutting cube and notch lower edge, cut the orientation otch upper edge of collapsing afterwards, with iron sheet the cutting cube upper end is wrapped, between cutting cube and notch upper edge, fill up the upper steel plate bar, and with positioner cutting cube upper end and chimney are fixedly linked.
The supporting member of using in the described step (3) comprises cover plate, base plate, is provided with tube connector between cover plate and the base plate, and tube connector is provided with and links plate.
The positioner of using in the described step (4) comprises supporting plate, the frid that links to each other with supporting plate and clamp, and the frid center line is provided with draw-in groove, and the edge of frid is provided with symmetrical bayonet socket.
With respect to blasting procedure, the present invention has following advantage:
(1) need not explode equipment and the method that adopts the rope sawing to cut is removed tall and big chimney, thereby in China's history that equipment just can not remove chimney stalk safely of not exploding that is through with, begun not have explosives and detonators can remove the New Times of chimney stalk safely in the same old way;
(2) can avoid in the area that has to removing the chimney stalk blast equipment of transporting for long-distance, and the long-distance transport blast equipment accident of blasting easily;
(3) can exempt much and examine, examine formality, thereby reduce the cost of removing building such as chimney stalk widely;
(4) avoided owing to adopt blasting method remove concussion of blasting that chimney etc. causes and blasting flyrock to around personnel's, equipment, building etc. infringement;
(5) since all personnel, plant equipment etc. when chimney collapses all outside safe distance, thereby can guarantee safety.
Description of drawings
Fig. 1 is the structural representation of waiting to remove chimney.
Fig. 2 be orientation collapse otch along the circumferential direction launch the back view.
Fig. 3 is hook bolt installment state schematic diagram.
Fig. 4 is the positioning device structure schematic diagram.
Fig. 5 is the schematic top plan view of Fig. 4.
Fig. 6 is the clamp structures schematic diagram.
Fig. 7 is supporting member structural representation among the embodiment 2.
Fig. 8 is that the A-A of Fig. 7 is to sectional view.
Fig. 9 is that positioner uses view.
Wherein, the center line that 1. collapses is 2. reserved column, 3. the orientation otch that collapses, 4. directed window otch, 5. cutting cube, 6. through hole, 7. centre bore, 8. hook bolt, 10. cover plate, 11. link plate, 12. tube connectors, 13. base plate, 14. supporting plates, 15. frids, 16. bayonet sockets, 17. draw-in groove, 18. clamps, 20. chimneys, 21. nut, 22. billets, 23. gads.
The specific embodiment
Embodiment 1: as depicted in figs. 1 and 2, and the described method for dismounting of present embodiment, carry out according to following step:
(1) the red lacquer of chimney 20 usefulness calibrate the center line 1 that collapses, orientation collapse otch 3, cutting cube 5, directed window otch 4, reserve the position of column 2, orientation is collapsed the length overall of otch 3 less than 3/5 ~ 2/3 of chimney bottom outer perimeter, and wherein A is 0.5 ~ 0.6 m to the otch 3 that collapses for chimney toppling direction orientation apart from the distance on ground.
(2) adopt air drill to drill open-work 6 and centre bore 7 in collapse four jiaos of otch 3 and center of orientation, the summit of directed window otch 4 also drills open-work 6.
(3) as described in Fig. 3 institute, at centre bore 7 place's fixed band huckbolts 8, hook bolt 8 is fixed on centre bore 7 places by nut 21 and billet 22.
(4) from reserving column 2 both sides, the saw of will restricting passes through hole 6, cut out cutting cube 5 with rope saw along the orientation of the red lacquer sign otch 3 that collapses afterwards, the notch place at cutting cube 5 places with the support member support notch about, and with positioner supporting member and chimney are fixedly linked; About cutting cube 5 long 1m, about high 2m.
The described supporting member of present embodiment is cut next cutting cube 5, cutting cube 5 is to support notch in the following manner: edge, both sides and the lower edge of cutting the directed otch 3 that collapses in the time of cutting earlier, cutting the back wraps cutting cube 5 lower edges with iron sheet, pad upper steel plate bar between cutting cube 5 and notch lower edge, cut orientation otch 3 upper edges of collapsing afterwards, with iron sheet cutting cube 5 upper edges are wrapped, pad upper steel plate bar between cutting cube 5 and notch upper edge, if also have the space between cutting cube 5 upper ends and the chimney, should squeeze in the chimney lateral in the seam fixing tight with the steel plate wedge, the depth of drive of steel plate wedge is no less than 200mm, and with positioner cutting cube 5 upper ends and chimney is fixedly linked.Frictional force when the steel plate bar can reduce to remove cutting cube, the both sides, front and back of steel plate bar are wide to go out cutting cube 50mm.
(5) reserving centered by the column 2, symmetry from the right and left, respectively cut out a cutting cube with the rope saw at every turn, and fix according to step (3) mode, up to whole cuttings intact and fixing after, spur hook bolt 8 afterwards, the dismounting cutting cube.
When removing cutting cube, one of wire rope is fastened on cutting cube center hook bolt 8, the other end is fastened and is being stood in swinging on the crawler-mounted excavator of 90 degree directions with chimney beyond tens meters far away, pull down locator earlier, be pulled outwardly simultaneously with two excavators in both sides again, can be at an easy rate with about first group of cutting cube remove.As long as grasped before removing last group cutting cube, the orientation of the chimney that assurance is removed out is collapsed incision length less than 45% of chimney bottom outer perimeter, and chimney just can not collapse in advance.Like this up to all cutting cube complete removals are intact.
(6) after last group supporting member dismounting is finished, chimney will be reserved column 2 and damage by pressure, and chimney is slowly toppled over according to preestablishing direction.
When last group supporting member, after dismounting is finished, in the chimney orientation is collapsed otch, the reservation column of the remaining centerline of the collapsing carrying chimney orientation gravity load of the unsettled cylindrical shell in otch top that collapses just only, surpass 1/2 of chimney gross weight, the dimensions of this column is determined with the design of pressure bar stabilization principle.About time column through about 1 minute is damaged by pressure, and chimney will slowly be toppled over according to the collapse direction that designs, and the deviation of collapse direction can be controlled in 5 degree, is advanced international level.
The extruding slungshot that falls down to the ground impact shock and produce that causes in order to prevent the chimney orientation from collapsing the back is to the harm of personnel, equipment, building all around, should carry out security protection and vigilance task according to the comprehensive safety protecting scheme of the good dismounting chimney of design construction in advance, guarantee the safety when chimney collapses.
In the present embodiment, because the supporting member that uses is the cutting cube that has just cut down, as you were, deal with the back slightly just directly as supporting member, not only saved a large amount of backing materials, and this design science is reasonable, be skillfully constructed, saving of work and time reduces cost, and is a scientific and reasonable design.
Shown in Fig. 4,5 and 6, the positioner of using in the described step (3) comprises supporting plate 14, the frid 15 that links to each other with supporting plate 14 and clamp 18, and frid 15 center lines are provided with draw-in groove 17, and the edge of frid 15 is provided with symmetrical bayonet socket 16.As shown in Figure 9, when positioner used, frid 15 was stuck between cutting cube and the chimney, afterwards clamp 18 was stuck in the bayonet socket of frid 15, if also have the space between clamp and the cutting cube, inserts gad 23 so and get final product in the space.
Embodiment 2: the supporting member that step in the present embodiment (3) is used comprises cover plate 10, base plate 13, is provided with tube connector 12 between cover plate 10 and the base plate 13, and tube connector 12 is provided with and links plate 11.Its specific embodiment is as follows:
1. reserve column 2 both sides from the steel bar concrete of reserving, cut out each side cutting cube with the rope saw, directly cutting cube is pulled out with hydraulic breaker (or gun carriage) and smash.Respectively cut out a cutting cube again, directly it is pulled out fragmentation with hydraulic breaker again.At this moment, reserve the column both sides and just respectively split out a wide about 2.4m, the cutting groove of high about 2m comes, at the good steel plate bar of cutting groove lower end pad, padding nickelclad bar can reduce the frictional force when removing the combined steel pipe support, put into cutting groove with fork truck respectively from each side pitching a combined steel pipe support, with the steel plate bar place, the slit between combined steel pipe rack plate and the top cylindrical shell is filled up again, if the top also has the slit, the using steel plate wedge is squeezed in the seam fixing tight from the chimney outside, steel plate wedge depth of drive is no less than 200 millimeters.Like this, just the cutting groove top chimney barrel supporting of this part has been got well with the combined steel pipe support.
2. like this centered by the reservation column, saw to the left and right sides symmetrically, after tearing two cutting cubes open, in cutting groove, filled up the steel plate bar, with fork truck two combined steel pipe supports are put into the cutting groove on both sides immediately respectively, and as stated above fixing tight, handle well, intact up to whole cuttings, supporting is good.In order to prevent that the combined steel pipe support from misplacing when the pressurized, can fix two combined steel pipe supports of correspondence with steel pipe in chimney.
Cutting cube in the directed window otch 4 is directly pulled out dismounting, does not need supporting in the otch.
3, all perform in integrated protection work, after the security vigilance task all puts in place, just can begin to remove the combined steel pipe support.
Centered by the reservation column, remove the combined steel pipe support simultaneously from the right and left symmetrically during dismounting, once one side is one.During dismounting with a bolt of wire rope on two steel pipes of combined steel pipe support, fasten on the crawler-mounted excavator beyond tens meters the other end, the steel plate wedge of squeezing into is played work, after the dismounting of the fixedly steel pipe in the chimney, two excavators in both sides are pulled outwardly simultaneously, can be at an easy rate with about two combined steel pipe supports pull out.
Removing latter two combined steel pipe support (about) on one side before as long as grasp, guaranteeing that the orientation of the chimney removed out is collapsed incision length less than 45% of chimney bottom outer perimeter, chimney just can not collapse in advance.Like this after all combined steel pipe supports have been removed, in collapsing otch, the chimney orientation just only is left to reserve the gravity load of the directed unsettled cylindrical shell in otch top that collapses of column carrying, approximately damaged by pressure through reserving column after the time-delay more than 1 minute, chimney can collapse according to the direction orientation that designs, the deviation of swinging to can be controlled in 5 degree, is domestic advanced level.
Other job practicess of present embodiment are with embodiment 1.
If in removing construction, find that chimney barrel year is aging for a long time, steel bar concrete cylindrical shell compressive strength descends, and when cutting cube can not make up as the temporary lining of chimney, can adopt the support pattern of present embodiment.
Claims (4)
1. method of removing chimney with rope saw patterning method is characterized in that carrying out according to following step:
(1) chimney (20) calibrate the center line that collapses (1), orientation collapse otch (3), directed window otch (4), reserve the position of column (2), the collapse length overall of otch (3) of orientation is 3/5 ~ 2/3 of chimney bottom outer perimeter;
(2) drill open-work (6) and centre bore (7) four jiaos of cutting cube (5) and center, the summit of directed window otch (4) also drills open-work (6);
(3) from reserving column (2) both sides, cut out cutting cube (5) with the rope saw along the orientation otch (3) that collapses, about the notch place at cutting cube (5) place usefulness support member support notch, and with positioner supporting member and chimney are fixedly linked;
(4) centered by reservation column (2), symmetrical begins to remove supporting member from the right and left;
(5) remove supporting member, after last group supporting member dismounting is finished, chimney will be reserved column (2) and damage by pressure, and chimney is toppled over according to preestablishing direction afterwards.
2. the rope of using according to claim 1 is sawed the method that patterning method is removed chimney, it is characterized in that the supporting member of using in the described step (3) is cut next cutting cube (5), cutting cube (5) is to support notch in the following manner: locate fixed band huckbolt (8) at centre bore (7), in cutting time, is collapse edge, both sides and the lower edge of otch (3) of cutting orientation earlier, cutting the back wraps cutting cube (5) lower edge with iron sheet, pad upper steel plate bar between cutting cube (5) and notch lower edge, cut orientation otch (3) upper edge of collapsing afterwards, with iron sheet cutting cube (5) upper end is wrapped, between cutting cube (5) and notch upper edge, fill up the upper steel plate bar, and with positioner cutting cube (5) upper end and chimney are fixedly linked.
3. the rope of using according to claim 1 is sawed the method that patterning method is removed chimney, it is characterized in that the supporting member of using in the described step (3) comprises cover plate (10), base plate (13), be provided with tube connector (12) between cover plate (10) and the base plate (13), tube connector (12) is provided with and links plate (11).
4. according to the described method of removing chimney with rope saw patterning method of one of claim 1 ~ 3, it is characterized in that: the positioner of using in the described step (4) comprises supporting plate (14), the frid (15) that links to each other with supporting plate (14) and clamp (18), frid (15) center line is provided with draw-in groove (17), and the edge of frid (16) is provided with symmetrical bayonet socket (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310158228.9A CN103233589B (en) | 2013-05-02 | 2013-05-02 | Method for dismantling chimney by means of rope sawing and cutting method |
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| CN201310158228.9A CN103233589B (en) | 2013-05-02 | 2013-05-02 | Method for dismantling chimney by means of rope sawing and cutting method |
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| CN103233589A true CN103233589A (en) | 2013-08-07 |
| CN103233589B CN103233589B (en) | 2015-04-15 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882356A (en) * | 2017-11-09 | 2018-04-06 | 河南理工大学 | A kind of mechanical removal construction method of cooling tower |
| 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 |
| CN109136434A (en) * | 2018-10-23 | 2019-01-04 | 中国十九冶集团有限公司 | Method for dismantling furnace body opening of blast furnace in directional dumping mode |
| CN109266799A (en) * | 2018-10-23 | 2019-01-25 | 中国十九冶集团有限公司 | Method for directionally dumping and dismantling blast furnace with frame |
| CN110206378A (en) * | 2019-06-21 | 2019-09-06 | 五冶集团上海有限公司 | Chimney overall pulling down construction method |
| 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 |
| CN111173312A (en) * | 2019-12-31 | 2020-05-19 | 哈尔滨理工大学 | Method for heating-cooling demolition of high-rise brick structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107882356A (en) * | 2017-11-09 | 2018-04-06 | 河南理工大学 | A kind of mechanical removal construction method of cooling tower |
| 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 |
| CN109136434A (en) * | 2018-10-23 | 2019-01-04 | 中国十九冶集团有限公司 | Method for dismantling furnace body opening of blast furnace in directional dumping mode |
| CN109266799A (en) * | 2018-10-23 | 2019-01-25 | 中国十九冶集团有限公司 | Method for directionally dumping and dismantling blast furnace with frame |
| CN110206378A (en) * | 2019-06-21 | 2019-09-06 | 五冶集团上海有限公司 | Chimney overall pulling down construction method |
| CN111173312A (en) * | 2019-12-31 | 2020-05-19 | 哈尔滨理工大学 | Method for heating-cooling demolition of high-rise brick structure |
| CN111173312B (en) * | 2019-12-31 | 2020-10-23 | 哈尔滨理工大学 | Method for heating-cooling demolition of high-rise brick structure |
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