CN105821900A - Super large blast furnace concrete bed online precise open tunnel method - Google Patents
Super large blast furnace concrete bed online precise open tunnel method Download PDFInfo
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- CN105821900A CN105821900A CN201510001451.1A CN201510001451A CN105821900A CN 105821900 A CN105821900 A CN 105821900A CN 201510001451 A CN201510001451 A CN 201510001451A CN 105821900 A CN105821900 A CN 105821900A
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Abstract
The invention relates to the super large blast furnace online fast maintenance technology, and especially relates to a blast furnace body modularization demolition method; a super large blast furnace concrete bed online precise open tunnel method comprises the following steps: 1, determining a tunnel position on the blast furnace body concrete bed; 2, drilling cutting holes on a tunnel edge or corner positions, and using the cutting holes to cut and separate a connecting surface between the tunnel and the bed; 3, pulling out a concrete core when the tunnel concrete core and the bed are fully disconnected, thus forming the tunnel. The novel method can further reduce the blast furnace maintenance time, can reduce maintenance cost, and can reduce construction risk.
Description
Technical field
The present invention relates to super-huge blast furnace online rapid-maintenance technique, particularly relate to the modularity method for dismounting of blast-furnace body.
Background technology
Along with the growth of active time, blast-furnace equipment is the most aging, resistance to material damage in stove, cooling recirculation system efficiency is gradually reduced, not only can cause drastically reducing of ironmaking production efficiency, cause the huge wasting of resources and environmental pollution, and safety in production can be brought high risk.Therefore, when blast furnace reaches its military service phase, need be continuing with must take the measures such as maintenance of equipment, body of heater replacing, to increase furnace life, keep production capacity.Using conventional means to carry out blast furnace overhaul and typically required for one to two years, period can not normally produce.Blast furnace is carried out quick overhaul, shortens maintenance time so that it is go into operation as early as possible, it is possible to bring tremendous economic and social benefit, national economy is produced and has great significance.
Blast furnace quick overhaul construction technology was typically to remove old blast furnace segmentation in the past.First, the concrete foundation of old blast furnace is holed, cut, fill, make blast furnace separate with ultra-large volume concrete basis；Subsequently, jacking hole is offered in blast furnace foundation surrounding, in order to Lifting Equipment is installed；Then, use prestress wire stretch-draw to reinforce with the concrete (being connected with old blast furnace) of upper bit concrete foundation facet, to prevent when basis surrounding jacking, crack in tension in the middle part of concrete foundation, cause basis damage；Subsequently, being promoted by whole old blast furnace, hoisting depth is no less than sliding rail and piston shoes total height, in order to slip device is arranged on ground beneath；Subsequently, being inserted by piston shoes and be supported below the concrete foundation of old blast-furnace body, the old blast-furnace body in top just can carry out segmentation cutting, and sliding is removed.This construction method operation is more complicated, long in time limit, and strengthening of foundation measure investment is big, and jacking is higher with lifting process construction risk.
Summary of the invention
It is contemplated that overcome the defect of prior art, it is provided that a kind of super-huge blast furnace concrete foundation the most accurately offers tunnel approach.The present invention shortens the blast furnace overhaul time further, reduces maintenance and puts into, reduces construction risk.
In order to solve above-mentioned technical problem, a kind of super-huge blast furnace concrete foundation the most precisely offers tunnel approach, and it includes:
Step one, determines tunnel location in the concrete foundation of blast-furnace body；
Step 2, bores on limit, tunnel or the cutting hole of corner positions, then utilizes the cutting of cutting hole to separate tunnel and the joint face on basis；
Step 3, after the concrete core in tunnel and basis are all separated from, extracts concrete core out, forms tunnel.
Described super-huge blast furnace concrete foundation the most precisely offers tunnel approach, and described step 2 specifically includes:
A. after tunnel roof plane being cut with the concrete foundation of blast furnace, potting resin in joint-cutting, retain the connection with basis of the tunnel upper surface, and hole in corner, cross section, tunnel；
B. cut the bottom surface in tunnel, and fill in the steel plate filling butter；
C. cutting Liang Ge side, tunnel；
D. longitudinally cutting in the middle of tunnel core sample, core sample is divided into two parts；
E. cut tunnel top, make the concrete core in tunnel thoroughly separate with basis.
Described super-huge blast furnace concrete foundation the most precisely offers tunnel approach, and described step 3 includes, outside blast furnace foundation, alignment tunnel extraction direction mounting slip beam, sliding beam width must meet core sample width requirement；Before concrete core pull-out, thereunder penetrate stainless-steel sheet as slide plate.
Described super-huge blast furnace concrete foundation the most precisely offers tunnel approach, described step 3 also includes: for preventing concrete core from rupturing during pull-out, the heart opens two holes wherein, penetrate round steel, termination, round steel both sides is thread segment, and installs the steel plate of band circular arc in both sides, fixes round steel and steel plate with nut, otic placode is welded as towing point, in order to extract concrete core out on steel plate.
The present invention is the guardian technique of blast furnace overhaul new technology.It i.e. offers some through tunnels when blast furnace online production not yet blowing out in concrete foundation, can not affect blast furnace and normally produce, it is to avoid the operation such as strengthening of foundation, body of heater lifting；This tunnel, for mounting slip track, piston shoes and Lifting Equipment, the cohesive force that potting resin is formed, can make tunnel concrete core body not move down, in order to filling in of corrosion resistant plate；Use butter corrosion resistant plate and circular arc steel plate can reduce frictional force when loosing core；Using the method that rod iron penetrates tunnel concrete core, when can make to loose core, concrete does not ruptures；Owing to jacking position is evenly distributed on bottom whole old cupola well, it is to avoid furnace bottom basis crack in tension, therefore also save prestress wire stretch-draw and the fund of strengthening of foundation was put into the time；Owing to Lifting Equipment is already installed in the through tunnel under basis, therefore blast-furnace body need not be lifted up operation, the time that not only saves also makes construction safer.Said method, measure, can meet super-huge blast furnace concrete foundation and the most accurately offer the process requirements in tunnel, and this is safe, economical, efficiently.
Detailed description of the invention
A kind of super-huge blast furnace concrete foundation of the present invention the most precisely offers tunnel approach, and it includes:
Step one, determines tunnel location in the concrete foundation of blast-furnace body；
Step 2, bores on limit, tunnel or the cutting hole of corner positions, then utilizes the cutting of cutting hole to separate tunnel and the joint face on basis；
Step 3, after the concrete core in tunnel and basis are all separated from, extracts concrete core out, forms tunnel.
Described super-huge blast furnace concrete foundation the most precisely offers tunnel approach, and described step 2 specifically includes:
A. after tunnel roof plane being cut with the concrete foundation of blast furnace, potting resin in joint-cutting, retain the connection with basis of the tunnel upper surface, and hole in corner, cross section, tunnel；
B. cut the bottom surface in tunnel, and fill in the steel plate filling butter；
C. cutting Liang Ge side, tunnel；
D. longitudinally cutting in the middle of tunnel core sample, core sample is divided into two parts；
E. cut tunnel top, make the concrete core in tunnel thoroughly separate with basis.
Described super-huge blast furnace concrete foundation the most precisely offers tunnel approach, and described step 3 includes, outside blast furnace foundation, alignment tunnel extraction direction mounting slip beam, sliding beam width must meet core sample width requirement；Before concrete core pull-out, thereunder penetrate stainless-steel sheet as slide plate.
Described super-huge blast furnace concrete foundation the most precisely offers tunnel approach, described step 3 also includes: for preventing concrete core from rupturing during pull-out, the heart opens two holes wherein, penetrate round steel, termination, round steel both sides is thread segment, and installs the steel plate of band circular arc in both sides, fixes round steel and steel plate with nut, otic placode is welded as towing point, in order to extract concrete core out on steel plate.
Claims (4)
1. a super-huge blast furnace concrete foundation the most precisely offers tunnel approach, it is characterised in that it includes:
Step one, determines tunnel location in the concrete foundation of blast-furnace body；
Step 2, bores on limit, tunnel or the cutting hole of corner positions, then utilizes the cutting of cutting hole to separate tunnel and the joint face on basis；
Step 3, after the concrete core in tunnel and basis are all separated from, extracts concrete core out, forms tunnel.
Super-huge blast furnace concrete foundation the most according to claim 1 the most precisely offers tunnel approach, it is characterised in that described step 2 specifically includes:
A. after tunnel roof plane being cut with the concrete foundation of blast furnace, potting resin in joint-cutting, retain the connection with basis of the tunnel upper surface, and hole in corner, cross section, tunnel；
B. cut the bottom surface in tunnel, and fill in the steel plate filling butter；
C. cutting Liang Ge side, tunnel；
D. longitudinally cutting in the middle of tunnel core sample, core sample is divided into two parts；
E. cut tunnel top, make the concrete core in tunnel thoroughly separate with basis.
Super-huge blast furnace concrete foundation the most according to claim 1 the most precisely offers tunnel approach, it is characterised in that described step 3 includes, outside blast furnace foundation, alignment tunnel extraction direction mounting slip beam, sliding beam width must meet core sample width requirement；Before concrete core pull-out, thereunder penetrate stainless-steel sheet as slide plate.
Super-huge blast furnace concrete foundation the most according to claim 3 the most precisely offers tunnel approach, it is characterized in that, described step 3 also includes: for preventing concrete core from rupturing during pull-out, the heart opens two holes wherein, penetrates round steel, and termination, round steel both sides is thread segment, and the steel plate of band circular arc is installed in both sides, fix round steel and steel plate with nut, steel plate welds otic placode as towing point, in order to extract concrete core out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001451.1A CN105821900A (en) | 2015-01-05 | 2015-01-05 | Super large blast furnace concrete bed online precise open tunnel method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510001451.1A CN105821900A (en) | 2015-01-05 | 2015-01-05 | Super large blast furnace concrete bed online precise open tunnel method |
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| CN105821900A true CN105821900A (en) | 2016-08-03 |
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| CN201510001451.1A Pending CN105821900A (en) | 2015-01-05 | 2015-01-05 | Super large blast furnace concrete bed online precise open tunnel method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756377A (en) * | 2021-07-30 | 2021-12-07 | 上海宝冶冶金工程有限公司 | Method for modifying modular rapid overhaul furnace foundation of super-huge type blast furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059109A (en) * | 1999-08-19 | 2001-03-06 | Sumitomo Metal Ind Ltd | Method for reconstructing blast furnace |
| JP2001207204A (en) * | 2000-01-25 | 2001-07-31 | Sumitomo Metal Ind Ltd | Method for modifying blast furnace |
| JP3775126B2 (en) * | 1999-09-09 | 2006-05-17 | 住友金属工業株式会社 | Blast furnace repair method |
| CN101448961A (en) * | 2006-05-18 | 2009-06-03 | 新日铁工程技术株式会社 | Dismantling method of bottom section of blast furnace |
| CN102146488A (en) * | 2010-02-09 | 2011-08-10 | 上海宝冶建设有限公司 | Modularized and integrative disassembling and installing methods for blast furnace |
| CN102409120A (en) * | 2011-10-28 | 2012-04-11 | 中国十九冶集团有限公司 | Blast Furnace Bottom Replacement Method |
-
2015
- 2015-01-05 CN CN201510001451.1A patent/CN105821900A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059109A (en) * | 1999-08-19 | 2001-03-06 | Sumitomo Metal Ind Ltd | Method for reconstructing blast furnace |
| JP3775126B2 (en) * | 1999-09-09 | 2006-05-17 | 住友金属工業株式会社 | Blast furnace repair method |
| JP2001207204A (en) * | 2000-01-25 | 2001-07-31 | Sumitomo Metal Ind Ltd | Method for modifying blast furnace |
| CN101448961A (en) * | 2006-05-18 | 2009-06-03 | 新日铁工程技术株式会社 | Dismantling method of bottom section of blast furnace |
| CN102146488A (en) * | 2010-02-09 | 2011-08-10 | 上海宝冶建设有限公司 | Modularized and integrative disassembling and installing methods for blast furnace |
| CN102409120A (en) * | 2011-10-28 | 2012-04-11 | 中国十九冶集团有限公司 | Blast Furnace Bottom Replacement Method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756377A (en) * | 2021-07-30 | 2021-12-07 | 上海宝冶冶金工程有限公司 | Method for modifying modular rapid overhaul furnace foundation of super-huge type blast furnace |
| CN113756377B (en) * | 2021-07-30 | 2023-02-24 | 上海宝冶冶金工程有限公司 | Method for transforming modular rapid overhaul furnace foundation of super-huge type blast furnace |
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Application publication date: 20160803 |