CN108871125B - The hydraulic pressure demolition method of steel angle structure power transmission tower - Google Patents
The hydraulic pressure demolition method of steel angle structure power transmission tower Download PDFInfo
- Publication number
- CN108871125B CN108871125B CN201810716049.5A CN201810716049A CN108871125B CN 108871125 B CN108871125 B CN 108871125B CN 201810716049 A CN201810716049 A CN 201810716049A CN 108871125 B CN108871125 B CN 108871125B
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- China
- Prior art keywords
- steel
- angle steel
- angle
- tubular structure
- hydraulic pressure
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/02—Particular applications of blasting techniques for demolition of tall structures, e.g. chimney stacks
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
- E04H12/348—Arrangements for demolition towers or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
Abstract
The invention discloses a kind of hydraulic pressure demolition methods of steel angle structure power transmission tower, comprising the following steps: (1) threaded hole is beaten on the first angle steel, third angle steel is installed in one end of the first angle steel；(2) the first angle steel is welded on angle steel to be blasted, is welded into tubular structure, in the bottom welding steel of tubular structure；(3) water bag and pack are alternately put into tubular structure, pack is drawn out to outside tubular structure by Nonel detonator；(4) the second angle steel and the first angle steel and third angle steel are fixed by bolt, tubular structure whole device is sealed；(5) it protects, evacuate, warning, can detonate after the completion of preparation before detonating.The present invention is by being welded into tubular structure on angle steel to be blasted, it is sealed at the both ends of tubular structure by steel plate and angle steel, form confined space, water bag and pack are placed in confined space, utilize the Incoercibility of liquid water, explosion extent of the destruction is greatly improved, can guarantee demolition effect.
Description
Technical field
The present invention relates to the hydraulic pressure demolition methods of steel angle structure power transmission tower, belong to explosion field.
Background technique
According to planning, following China 10-20 will build tens of extra-high voltage direct-current engineerings, gradually form extra-high voltage and hand over directly
Serial-parallel power grid is flowed, is powered by extra-high voltage direct-current, AC system to central and east load center.To alleviate multi-infeed HVDC system face
Receiving end network voltage reactive power support scarce capacity, the transmitting system faced intensively leads to problems such as short circuit current get over line, extra-high voltage point
Layer direct current becomes new direct current access module.Compared with conventional extra-high voltage direct-current, the main distinction is the high-end change of current of inverter side
Change, low side change of current change are respectively connected to 500kV, 1000kV power grid, and alternating current filter and reactive power compensator are also respectively connected to
500kV, 1000kV power grid.
But when building UHV transmission tower, most of old steel tower and newly-built new steel tower are on same path, it is necessary to
It just can be carried out construction after former route grounded-line, steel tower are removed.Angle steel an iron rake with three to six teeth dismounting in China's still belongs to the primary stage, needs to pass through
Worker removes, and large labor intensity, working efficiency are low, and risk is high.It, can not be by punching explosion, only in angle steel an iron rake with three to six teeth
Energy dobie, a big chunk energy are dispersed into air, and demolition effect is poor.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of steel angle structure power transmission tower
Hydraulic pressure demolition method passes through steel plate and angle steel at the both ends of tubular structure by being welded into tubular structure on angle steel to be blasted
Sealing forms confined space, water bag and pack is placed in confined space, using the Incoercibility of liquid water, greatly
Explosion extent of the destruction is improved, can guarantee demolition effect.
Technical solution: in order to solve the above technical problems, the hydraulic pressure demolition method of steel angle structure power transmission tower of the invention, including
Following steps:
(1) threaded hole is beaten on the first angle steel, welds on the inside of one end of the first angle steel or the third angle is installed by bolt
Steel；
(2) the first angle steel is welded on angle steel to be blasted, is welded into tubular structure, weld steel in the bottom of tubular structure
Plate, by the sealed bottom of tubular structure；
(3) water bag and pack are alternately put into tubular structure, pack is drawn out to tubular knot by Nonel detonator
Outside structure；
(4) the second angle steel and the first angle steel and third angle steel are fixed by bolt, tubular structure whole device is sealed；
(5) it protects, evacuate, warning, can detonate after the completion of preparation before detonating.
Preferably, in the step (2) tubular structure with hand-held angle grinder on opposite sides from 40cm every
10cm cuts one long 2cm cutting seam；From at 35cm, it is spaced 10cm on angle steel angle and cuts 2cm one long cutting seam, totally 9
Angle cutting seam 5, cutting seam passes through sealant sealing.
Preferably, water bag described in the step (3) is equipped with groove, pack is located in groove.
Preferably, the second angle steel described in the step (4) is equipped with waist type groove, bolt passes through waist type groove and first jiao
Steel connection.
The utility model has the advantages that the hydraulic pressure demolition method of steel angle structure power transmission tower of the invention, by being welded on angle steel to be blasted
At tubular structure, is sealed at the both ends of tubular structure by steel plate and angle steel, form confined space, be placed in confined space
Water bag and pack greatly improve explosion extent of the destruction using the Incoercibility of liquid water, can guarantee demolition effect；
And by moisture be it is packed, can to the angle steel of all directions carry out explosion, moreover, be conducive to the second angle steel to tubular structure carry out
Sealing, installation is simple, high-efficient.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, the hydraulic pressure demolition method of steel angle structure power transmission tower of the invention, comprising the following steps:
(1) threaded hole is beaten on the first angle steel 2, welds on the inside of one end of the first angle steel 2 or third is installed by bolt
Angle steel 5；
(2) the first angle steel 2 is welded on angle steel 6 to be blasted, is welded into tubular structure, welded in the bottom of tubular structure
Steel plate, by the sealed bottom of tubular structure；
(3) water bag 1 and pack 3 are alternately put into tubular structure, pack 3 is drawn out to tubular by Nonel detonator
Outside structure；
(4) by bolt that the second angle steel 4 and the first angle steel 2 and third angle steel 5 is fixed, tubular structure whole device is close
Envelope；
(5) it protects, evacuate, warning, can detonate after the completion of preparation before detonating.
In the present invention, in the step (2) tubular structure with hand-held angle grinder on opposite sides from 40cm every
10cm cuts one long 2cm cutting seam；From at 35cm, it is spaced 10cm on angle steel angle and cuts 2cm one long cutting seam, totally 9
Angle cutting seam 5, cutting seam is sealed by sealant, and the guiding performance stitched by cutting greatly improves explosion extent of the destruction,
It can guarantee demolition effect.Water bag described in the step (3) is equipped with groove, and pack is located in groove.Institute in the step (4)
The second angle steel is stated equipped with waist type groove, bolt passes through waist type groove and the first Bolted angle connection.Pack is 2# rock emulsion explosive, is utilized
2# rock emulsion explosive completes the blasting work of steel angle structure, is convenient for engineering construction, without high explosion velocity military explosives such as TNT.
Claims (4)
1. a kind of hydraulic pressure demolition method of steel angle structure power transmission tower, it is characterised in that: the following steps are included:
(1) threaded hole is beaten on the first angle steel, is welded on the inside of one end of the first angle steel or is passed through bolt and third angle steel is installed；
(2) the first angle steel is welded on angle steel to be blasted, is welded into tubular structure, in the bottom welding steel of tubular structure,
By the sealed bottom of tubular structure；
(3) water bag and pack are alternately put into tubular structure, pack is connect with detonator, and detonator one end is drawn out to cylinder
Outside shape structure；
(4) the second angle steel and the first angle steel and third angle steel are fixed by bolt, tubular structure whole device is sealed；
(5) it protects, evacuate, warning, can detonate after the completion of preparation before detonating.
2. the hydraulic pressure demolition method of steel angle structure power transmission tower according to claim 1, it is characterised in that: the step (2)
Middle tubular structure cuts one long 2cm cutting seam every 10cm from 40cm on opposite sides with hand-held angle grinder；From 35cm
Locate, 10cm is spaced on angle steel angle and cuts one long 2cm cutting seam, totally 9 cutting seams, cutting seam are sealed by sealant.
3. the hydraulic pressure demolition method of steel angle structure power transmission tower according to claim 1, it is characterised in that: the step (3)
Described in water bag be equipped with groove, pack is located in groove.
4. the hydraulic pressure demolition method of steel angle structure power transmission tower according to claim 1, it is characterised in that: the step (4)
Described in the second angle steel be equipped with waist type groove, bolt passes through waist type groove and the first Bolted angle connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810716049.5A CN108871125B (en) | 2018-07-03 | 2018-07-03 | The hydraulic pressure demolition method of steel angle structure power transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810716049.5A CN108871125B (en) | 2018-07-03 | 2018-07-03 | The hydraulic pressure demolition method of steel angle structure power transmission tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108871125A CN108871125A (en) | 2018-11-23 |
| CN108871125B true CN108871125B (en) | 2019-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810716049.5A Active CN108871125B (en) | 2018-07-03 | 2018-07-03 | The hydraulic pressure demolition method of steel angle structure power transmission tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108871125B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3701133A1 (en) * | 1987-01-16 | 1988-07-28 | Battelle Institut E V | Explosive-cutting method for thick-walled steel pipes |
| CN102493675A (en) * | 2011-11-24 | 2012-06-13 | 兰州大学 | Column charge hydraulic blasting demolition method |
| CN107328328A (en) * | 2017-08-24 | 2017-11-07 | 徐州雷鸣民爆器材有限公司 | The blasting method of steel construction |
| CN107858941B (en) * | 2017-11-16 | 2019-06-28 | 南京交通工程有限公司 | A kind of hydraulic pressure demolition dismounting Prestressed Continuous Box Beam bridge construction technique |
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2018
- 2018-07-03 CN CN201810716049.5A patent/CN108871125B/en active Active
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| Publication number | Publication date |
|---|---|
| CN108871125A (en) | 2018-11-23 |
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