CN112595191A - Energy-gathered blasting method for high-voltage line iron tower - Google Patents
Energy-gathered blasting method for high-voltage line iron tower Download PDFInfo
- Publication number
- CN112595191A CN112595191A CN202110016646.9A CN202110016646A CN112595191A CN 112595191 A CN112595191 A CN 112595191A CN 202110016646 A CN202110016646 A CN 202110016646A CN 112595191 A CN112595191 A CN 112595191A
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- energy
- iron tower
- voltage line
- wedge
- gathered
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000005422 blasting Methods 0.000 title claims abstract description 40
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002360 explosive Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000002390 adhesive tape Substances 0.000 claims abstract description 4
- 230000037452 priming Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- 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
Abstract
The invention relates to an energy-gathered blasting method for a high-voltage line iron tower, which comprises the following operation steps: determining the positions of the upper openings of four angle steel supporting legs of the iron tower according to the actual condition of the high-voltage line iron tower; manufacturing an energy-gathered blasting device and filling explosives; extending the detonating detonator into the cartridge from one end of the cartridge, and fixing the detonating detonator by using an adhesive tape; and installing the energy-gathered blasting devices in the notches, and detonating all the notches simultaneously. The invention is suitable for emergency demolition of the high-voltage line tower, eliminates potential safety hazards existing in other demolition modes, provides safety guarantee, reduces the technical difficulty of cutting large-scale metal components, and has the advantages of wide sources of blasting materials, low manufacturing cost, convenience in field manufacturing and convenience in installation.
Description
Technical Field
The invention relates to iron tower blasting demolition, in particular to an energy-gathered blasting method for a high-voltage line iron tower.
Background
In the western mountainous areas of China, most of high-voltage line iron towers are built on the tops of mountains or the waists of the mountains, and if the mountains are encountered and have a landslide tendency, the iron towers become dangerous towers and need to be dismantled. Under the condition of a normal iron tower, manual tower mounting is generally adopted for dismounting from top to bottom, and no relevant iron tower dismounting cases exist in China at present for forbidden personnel to mount the tower for operation in a dangerous tower.
Disclosure of Invention
The invention provides an energy-gathered blasting method for a high-voltage line iron tower, which adopts energy-gathered cutting blasting.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-voltage line iron tower energy-gathering blasting method comprises the following steps:
(1) according to the actual condition of a high-voltage line iron tower, upper notches and lower notches are respectively arranged on four angle steel supporting legs of the iron tower, and then the distance between the upper notches and the lower notches of the four angle steel supporting legs of the iron tower is determined according to the preset collapse direction of the iron tower;
(2) manufacturing an energy-gathered blasting device, wherein the energy-gathered blasting device consists of a cartridge and a wedge-shaped cover, an opening is axially arranged on one side surface of the cartridge, and the cartridge is embedded in the cartridge through the opening wedge-shaped cover;
(3) filling explosives into a cavity formed by the loading cylinder and the wedge-shaped cover from two ends of the loading cylinder, and sealing two ends of the loading cylinder after filling the explosives to form an energy-gathered blasting device;
(4) mounting the energy-gathered blasting devices at the positions of the set notches on the four angle steel supporting legs of the iron tower;
(5) extending the priming detonator into the explosive from one end face of the explosive cartridge and fixing the priming detonator by using an adhesive tape;
(6) and (5) detonating.
The wedge cover is formed by mutually connecting one sides of two plates, the cross section of the wedge cover is V-shaped, and the vertex angle of the wedge cover is 90 degrees.
The cartridge is made of PVC material.
The radius of dress cartridge is 40 ~ 120mm, and length is 200 ~ 600mm, and the wall thickness is 5 ~ 7 mm.
The wedge-shaped cover is made of red copper; the wall thickness of the wedge-shaped cover is 1.5-2.5 mm; the apex angle is 90.
The invention has the beneficial effects that:
(1) the energy-gathered blasting device has a simple structure, greatly reduces the technical difficulty of cutting large metal components, particularly has wide material sources, low manufacturing cost and convenient field manufacturing and installation, and is suitable for popularization;
(2) the formed high-voltage line tower danger emergency dismantling is realized, potential safety hazards existing in other dismantling modes are eliminated, and safety guarantee is provided.
Drawings
FIG. 1 is a schematic perspective view of a low temperature energy-accumulating blasting apparatus according to the present invention;
FIG. 2 is a front sectional view of the low temperature energy concentrating blasting device of the present invention;
FIG. 3 is a side view of a low temperature energy concentrating blasting device according to the invention;
fig. 4 is a schematic diagram of a blasting tower;
in the figure: 1. the explosive cartridge 2 is a wedge-shaped cover 3, and the detonator is detonated.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
refer to fig. 1, 2, 3, 4; a Mongolian village and a Mongolian village under the Ri county of Abam, the demolition object is 220kV Menwen-two-wire 011# transmission tower.
The height of the whole tower is 56.5 m, the height of the tower is 37.5 m, and the height of the tower head is 19 m.
The left-most side of the iron tower is provided with an iron tower B supporting leg which is seriously damaged, according to the damage state visible to the naked eye, the damage of the iron removing tower is avoided, the tower foundation mountain body has serious geological hidden danger, the mountain body at the lower part of the iron tower becomes a landslide body, and the crack generated on the ground surface sliding surface is clearly visible.
The demolition object is a typical steel structure iron tower, and directional control blasting collapse demolition is adopted for the demolition object according to the surrounding environment condition and the structural characteristics of the facility to be demolished.
Because the iron tower is close to the cliff, a dangerous slide surface is formed at the bottom of the tower, and a leg B of a supporting leg of the 11# tower is seriously damaged, the factors seriously influence the operation conditions on the site, various common protection measures for demolition and blasting are difficult to implement, and the following risks are mainly existed in the demolition process:
firstly, the grounding load of the iron tower has influence on the stability of the landslide body;
disturbance such as grounding load of the iron tower can cause partial collapse of the landslide body;
and thirdly, disturbance in the dismantling process can cause scattered soil and stones to fall off the cliff.
2 design of blasting technical scheme
(1) The heights of 4 supporting legs of the 11# iron tower are different, the height of the supporting leg A is about 6m, the height of the supporting leg B is about 9m, the height of the supporting leg C is about 13.5m, and the height of the supporting leg D is about 7.5 m; the supporting legs B and C are close to the cliff, and the supporting legs A and D are far away from the cliff;
as the landslide body is further unstable recently and the operation condition is worsened, the operation mode of erecting a scaffold cannot be adopted on site, and only a portable herringbone ladder can be used for assisting in mounting the energy-gathering blasting devices on the four angle steel legs of the iron tower;
the specific explosive is designed as follows: the explosive heights of the supporting leg B and the supporting leg C are from the bottom level of the legs to +0.5m to +1.5m, and the explosive heights of the supporting leg A and the supporting leg D are from the bottom level of the legs to +0.5m to +3.0 m;
because the collapse direction of the 11# iron tower is designed to be the opposite direction of the cliff, the distance between the upper notches of the supporting leg A and the supporting leg D and the lower notch is 2.5 m; the distance between the upper notches of the supporting legs B and C and the lower notches is 1 m;
(2) manufacturing a tower energy-gathering blasting device, wherein the high-voltage line iron tower energy-gathering blasting device consists of a cartridge case 1 and a wedge-shaped cover 2, a through long opening is axially arranged at the lower part of the cartridge case, and the cartridge case is embedded in the cartridge case through the opening wedge-shaped cover 2;
(3) filling emulsion explosives into a cavity formed by the cartridge case and the wedge-shaped cover from two ends of the cartridge case, and sealing two ends of the cartridge case after the emulsion explosives are filled to form an energy-gathered blasting device;
(4) installing the energy-gathered blasting device at a notch position set on an iron tower, and enabling an opening of the energy-gathered blasting device to be tightly attached to the notch;
(5) extending the priming detonator into the explosive from one end of the explosive cartridge and fixing the priming detonator by using an adhesive tape;
(6) and (4) evacuating the personnel, and detonating all the notches simultaneously after determining the safety of the surrounding environment.
The material of the wedge-shaped cover 2 for the current blasting is red copper; the apex angle of wedge cover is 90, and red copper plate thickness is 2mm, cartridge length 200mm, cartridge radius 50mm, and the cartridge loading is 2 kg.
Claims (5)
1. A high-voltage line iron tower energy-gathering blasting method is characterized by comprising the following steps:
(1) according to the actual condition of a high-voltage line iron tower, an upper notch and a lower notch are respectively arranged on four angle steel supporting legs of the iron tower, and then the distance between the upper notch and the lower notch of the four supporting legs of the iron tower is determined according to the preset iron tower collapse direction;
(2) manufacturing an energy-gathered blasting device, wherein the energy-gathered blasting device consists of a cartridge loading barrel (1) and a wedge-shaped cover (2), an opening is axially formed in one side surface of the cartridge loading barrel (1), and the wedge-shaped cover (2) is embedded in the cartridge loading barrel through the opening;
(3) filling explosives into a cavity formed by the loading barrel and the wedge-shaped cover from two ends of the loading barrel (1), and sealing two ends of the loading barrel after the explosives are loaded to form an energy-gathered blasting device;
(4) installing the energy-gathered blasting devices at the set notch positions on the four angle steel supporting legs of the iron tower, and enabling the openings of the energy-gathered blasting devices to be tightly attached to the notches;
(5) extending the priming detonator (3) into the explosive from one end face of the explosive loading cylinder (1) and fixing the priming detonator by using an adhesive tape;
(6) all the notches are detonated simultaneously.
2. The energy-gathered blasting method for a high-voltage line iron tower according to claim 1, wherein the wedge-shaped cover (2) is formed by connecting one side of two plates with each other, and has a V-shaped cross section, and the apex angle of the wedge-shaped cover is 90 °.
3. A high-voltage line tower shaped-blasting method according to claim 2, characterised in that the wedge cap (2) is made of red copper; the wall thickness of the wedge-shaped cover (2) is 1.5-2.5 mm, and the length is 200-600 mm.
4. The energy-gathered blasting method for the high-voltage line iron tower according to claim 1, wherein the radius of the cartridge (1) is 40-120 mm, the length is 200-600 mm, and the wall thickness is 5-7 mm.
5. The energy-gathered blasting method for high-voltage line iron towers according to any one of claims 1 to 4, characterized in that the cartridge (1) is made of PVC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110016646.9A CN112595191A (en) | 2021-01-07 | 2021-01-07 | Energy-gathered blasting method for high-voltage line iron tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110016646.9A CN112595191A (en) | 2021-01-07 | 2021-01-07 | Energy-gathered blasting method for high-voltage line iron tower |
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| CN112595191A true CN112595191A (en) | 2021-04-02 |
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| CN202110016646.9A Pending CN112595191A (en) | 2021-01-07 | 2021-01-07 | Energy-gathered blasting method for high-voltage line iron tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624086A (en) * | 2021-08-19 | 2021-11-09 | 中国核工业第二二建设有限公司 | Energy-gathered charging device for blasting demolition of thick steel structure factory building and blasting method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151793A (en) * | 1966-07-16 | 1969-05-14 | Cammell Laird Shiprepairers Lt | Improvements in or relating to Supporting and Manipulating Equipment for Shot Blasting Apparatus. |
| CN104089550A (en) * | 2014-03-21 | 2014-10-08 | 河南理工大学 | High-unloading slot composite-incision demolition blasting method for reinforced concrete cooling tower |
| CN206321142U (en) * | 2016-12-28 | 2017-07-11 | 山东科技大学 | A kind of novel emulsion explosive cumulative powder stick |
| CN108871128A (en) * | 2018-07-04 | 2018-11-23 | 中国人民解放军陆军工程大学 | A method of utilizing preformed particles medium explosion power transmission tower |
| CN108952306A (en) * | 2018-07-03 | 2018-12-07 | 中国人民解放军陆军工程大学 | A kind of hydraulic pressure demolition method of the steel angle structure power transmission tower positioned at mountain area |
| CN109238051A (en) * | 2018-05-24 | 2019-01-18 | 中钢集团武汉安全环保研究院有限公司 | A kind of method that steel angle structure power transmission tower single column demolition blasting is got rid of the danger |
| CN111366047A (en) * | 2020-04-15 | 2020-07-03 | 辽宁科技大学 | Low-temperature energy-gathering blasting method |
-
2021
- 2021-01-07 CN CN202110016646.9A patent/CN112595191A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151793A (en) * | 1966-07-16 | 1969-05-14 | Cammell Laird Shiprepairers Lt | Improvements in or relating to Supporting and Manipulating Equipment for Shot Blasting Apparatus. |
| CN104089550A (en) * | 2014-03-21 | 2014-10-08 | 河南理工大学 | High-unloading slot composite-incision demolition blasting method for reinforced concrete cooling tower |
| CN206321142U (en) * | 2016-12-28 | 2017-07-11 | 山东科技大学 | A kind of novel emulsion explosive cumulative powder stick |
| CN109238051A (en) * | 2018-05-24 | 2019-01-18 | 中钢集团武汉安全环保研究院有限公司 | A kind of method that steel angle structure power transmission tower single column demolition blasting is got rid of the danger |
| CN108952306A (en) * | 2018-07-03 | 2018-12-07 | 中国人民解放军陆军工程大学 | A kind of hydraulic pressure demolition method of the steel angle structure power transmission tower positioned at mountain area |
| CN108871128A (en) * | 2018-07-04 | 2018-11-23 | 中国人民解放军陆军工程大学 | A method of utilizing preformed particles medium explosion power transmission tower |
| CN111366047A (en) * | 2020-04-15 | 2020-07-03 | 辽宁科技大学 | Low-temperature energy-gathering blasting method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624086A (en) * | 2021-08-19 | 2021-11-09 | 中国核工业第二二建设有限公司 | Energy-gathered charging device for blasting demolition of thick steel structure factory building and blasting method |
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