CN1982541A - Underground channel of hydroelectric station and cavity group waterproofing and leakage-stopping construction - Google Patents
Underground channel of hydroelectric station and cavity group waterproofing and leakage-stopping construction Download PDFInfo
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- CN1982541A CN1982541A CNA2005100227139A CN200510022713A CN1982541A CN 1982541 A CN1982541 A CN 1982541A CN A2005100227139 A CNA2005100227139 A CN A2005100227139A CN 200510022713 A CN200510022713 A CN 200510022713A CN 1982541 A CN1982541 A CN 1982541A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention provides construction techniques that can effectively solve the joints, construction joints, cracks, honeycomb face and concrete shrinkage cracks and the water leakage problem of concrete structure in underground project. The techniques comprises waterproof and plugging construction technology of split (including cut and tick groove, grouting, polish, brush waterproof coating layer) and waterproof and plugging construction technology of duct piece (including hair cutting, slotting, tick tank, duct-pulling, caulking, smear surface, grouting). The construction technics of the present invention is simple and effective, compact in design; it is also not restricted by the size of construction site. The grouting and caulking materials of the invention, is the most advanced in our country and is often used as engineering materials, with low cost; The invention can reinforce the concrete cracks, particularly it can deal with waterproof and plugging problems owing to the concrete contract of large areas.
Description
Technical field
The present invention relates to the power station construction technology, relate in particular to underground gallery, power station, cavity group waterproofing and leakage-stopping construction technology.
Technical background
In the construction of hydropower stations, the diversion and power system often forms underground hole group, by pressure diversion tunnel, major-minor factory building and erecting bed, transformer chamber, bus tunnel, draft tube tunnel, down stream surge-chamber, enter big and small caverns such as factory's traffic and form, and substantially all be arranged in underground.Cavity group, gallery are handed over anchor in length and breadth, main cavern, gallery span, highly all bigger, and the rock cranny seepage pressure is big, and the construction period is tight, be by matter, finish the construction of underground hole group on schedule and safely, become the controlled engineering of the construction of hydropower stations.The assembled tunnel of reinforced concrete segment in the construction (lining cutting) because a variety of causes causes the Seepage water of section of jurisdiction, is key technology in the construction of power station, if untimely processing also might cause engineering accident.
At present, the routine techniques of China Democratic National Construction Association's underground gallery impervious leakage-stopping is many, but underground gallery, power station, cavity group since rock cranny hydraulic pressure than higher, the engineering construction more complicated, the basic concrete grouting that adopts is handled, this construction speed is slow, cost is high, and the processing of some small sizes all do not carry out, and has very big accident potential.
Summary of the invention
The purpose of this invention is to provide the construction technology that a kind of construction technology simply, also can effectively solve leakage problems such as concrete structure seam, constuction joint, deformation joint, voids and pits and concrete shrinkage crack in the underground construction.
The present invention utilizes manual or mechanical means, under pressure, will change the filling material and be circulated in the fabric structure crack, grouting agent is solidified, to reach the purpose of filling crack and sealing in the crack.To non-through crack, because of the relation of holding one's breath, be difficult to slurries are poured into the pinnacle district in crack, thereby can not eliminate the formed area of stress concentration of this cusp field, so answer the mature consideration various factors in handling, improve the pack completeness of slurries.For thermal cracking, consider " hysteresis effect " of concrete construction to temperature, the low spot that is chosen in the concrete bodies temperature carries out grouting treatment.
Concrete technical scheme of the present invention comprises crack, crack waterproofing and leakage-stopping construction technology and segment joint waterproofing and leakage-stopping technology, and wherein crack, crack waterproofing and leakage-stopping construction technology technology comprises:
1. cut and tick slot: cut in both sides, crack, crack with cutting machine earlier, use the electric impact drill tick slot then;
2. slip casting: with the poor slip casting shutoff of ditch, the face of blocking is lower than the crack basal plane;
3. polishing: in the wide distance of the about 15～25cm in seam both sides, crack, crack,, expose fresh smooth concrete surface with wet worker's sanding machine polishing;
4. filleting: after the drying, embed in the above-mentioned groove, make the surfacing of crack, crack with sealing material;
5. brushing water-repellent paint layer: at seam crossing and 2～3 layers of flexible waterproof coating of both sides brushing, the coating film forming thickness is 2～3mm;
Segment joint waterproofing and leakage-stopping technology comprises:
1. cut a hole hair, slot, tick slot: earlier at the wide 15～25cm in segment joint both sides place, artificial cutter hair, expose the fresh concrete basal plane and make it coarse, cutting into width in the seam both sides with concrete cutting machine again is that 4～5cm, the degree of depth are the slit of 5～8cm, uses electric impact drill tick slot in the slit then;
2. take out pipe: make mould with 14mmPVC sebific duct, adopt fast setting cement pressure pipe joint seal, take out the pipe operation, and reserve the diversion Grouting Pipe;
3. filleting: clean out floating ash, the earth of groove and both sides earlier with wire brush and hairbrush, embed then and stitch sealing material;
4. wipe one's face: adopt the neoprene polymer mortar to wipe one's face, water seasoning is 3～4 days after wiping one's face;
5. slip casting: earlier with grouting pump to the aqueduct setting-out, the water-soluble injecting paste material of pressure injection again, treat that slurries solidify after, remove above-mentioned pre-buried aqueduct, seal with fast setting cement at last.
Injecting paste material is that the outer penetration enhancer of fast setting cement mixed with Portland cement and gets in 1: 4 in proportion～1: 8 in the above-mentioned slip casting step.
Other get water-proof plugging material and adopt common water-proof plugging material among the present invention.Have as the joint seal material: 1, the 525# Portland cement adds SH cement additive; 2, double-quick cement; 3, special speed is hard; 4, the 525# Portland cement adds water resistant solution; 5, the 525# Portland cement adds cement hardener.Caulking material has: go up tunnel board 851 tar polyurethane coating; 2, TPU polyurethane bicomponent sealing amine; 3, TPU polyurethane sealing putty; 4,888 swell soil polyurethane sealants; 5, coal-tar epoxy caulking material etc.) waterproof outer material (external coating) has: 1, neoprene emulsion polymer mortar; 2,851 tar polyurethane water-proof paints (black and various colour); 3, Portland cement adds additive.The construction requirement of exterior waterproof coating must the basal plane drying.
The present invention also is applicable to waterproof, the blocking construction of various underground constructions, as the waterproofing and leakage-stopping of engineerings such as air, underground passage, underground garage.
The present invention compared with prior art has the following advantages:
1, the present invention can effectively solve percolating water, sealing, the waterproof such as seam, constuction joint, deformation joint, voids and pits and concrete shrinkage crack of concrete structure in the underground construction.
2, construction technology of the present invention is simply effective, and equipment volume is small and exquisite, is not subjected to construction plant size restriction.
3, used injecting paste material, the caulking material of the present invention belongs to domestic advanced person, also is the engineering common used material.
4, the present invention can carry out reinforcement to distress in concrete, especially large tracts of land is watered the concrete shrinkage of smashing and the fine cracks that produces also can be carried out waterproofing and leakage-stopping and handled.
The specific embodiment
1, crack, crack waterproofing and leakage-stopping construction technology technology:
Crack, crack waterproofing and leakage-stopping construction technology is divided into slot, tick slot, polishing, several steps of swabbing.(1) cutting and tick slot according to designing requirement, cut in both sides, crack, crack with cutting machine earlier, use the electric impact drill tick slot then, are aided with artificial refine again and become the dark ditch in 5cm～8 poor.(2) slip casting: adopt two kinds of methods, obviously the grouting for water blocking of punchinging (injecting paste material is that outer penetration enhancer of fast setting cement SH and 425# Portland cement mix in proportion at 1: 6) is adopted at the percolating water position, and the fast setting cement shutoff is taked in other position infiltrations.The outer penetration enhancer of fast setting cement SH mixed with the 425# Portland cement in 1: 4 in proportion～1: 8, or used double-quick cement.Carry out shutoff then.Cement setting time is adjusted in about 2min.(3) polishing, is polished with wet worker's sanding machine from interior at the about 15～25cm width in seam both sides, crack, crack.Remove uneven foreign material, floating dust etc.Fresh smooth concrete surface is exposed in polishing, rinses water-repellent paint and lays the first stone for next step is coated with.(4) filleting seals serial sealing material to the 851 tar polyurethane sealing compounds of working good or 888 swell soil caulk compounds, FUP polyurethane, embeds in the groove of fixing, and is filled to till the surfacing of crack, crack.Filleting finishes also should press with scraper and scrapes, to strengthen sealing compound and concrete bonding.(5) brushing water-repellent paint layer is for the waterproof ability of protection stopping composition and reinforcement crack, crack seam, at 2～3 layers of flexible waterproof coating of seam both sides brushing.The water-repellent paint film forming thickness should remain on 2～3mm, should note forming the integral waterproofing glued membrane during brushing, can adopt scraper or hairbrush full coat even: also available neoprene emulsion polymer mortar is made exterior waterproof coating.Filleting and brushing water-repellent paint layer require to carry out under nothing infiltration, drying regime.
2, segment joint waterproofing and leakage-stopping technology:
Segment joint waterproofing and leakage-stopping technology is: hacking, cutting, tick slot; Take out pipe, filleting, wipe one's face, slip casting.(1) cutter hair, slot, tick slot: cutter hair; In the segment joint both sides, each wide 15～25cm manually with chip-axe cutter hair, exposes the fresh concrete basal plane and makes it coarse, and rigidity is wiped one's face and concrete bonds well lays the first stone in order to strengthen.Slot, tick slot; With the cutting of daily output diamond saw blade concrete cutting machine, cutting width 4～5cm, ditch depth 5～8cm uses the electric impact drill tick slot then, becomes the dark groove of 5～8cm with power shovel with artificial refine at last.(2) take out pipe: adopt 14mmPVC sebific duct to make mould, double-quick cement or other fast setting cement pressure pipe joint seals are taken out the pipe operation, reserve the diversion Grouting Pipe at last.(3) caulking material can be selected for use: coal-tar epoxy coating (end amine and sealing compound), and 851 tar polyurethane coating, TPC polyurethane sealing series goes up water material etc.Filleting; Clean out floating ash, the earth of groove and both sides earlier with wire brush and hairbrush, embed seam material (construction technology by various caulking materials in the construction is carried out) then, be squeezed to closely knit behind the requirement pointing repeatedly, the most handy scraper or manually push twice in the caulking material solidification process is so that bonding is better.(4) wipe one's face: the waterproof of wiping one's face can be implemented by the five layers of waterproofing process of wiping one's face.Also can adopt the neoprene polymer mortar to wipe one's face.Wipe one's face and took water seasoning 3～4 days after finishing.(5) slip casting: at first use the hand-lift type grouting pump to the aqueduct setting-out, and then the injecting paste material that mixed in 1: 4 in proportion～1: 8 of the outer penetration enhancer of pressure injection fast setting cement SH and 425# Portland cement.After treating that slurries solidify, slice off pre-buried aqueduct, seal with double-quick cement again with pocket knife.
Claims (2)
1, the construction technology of underground gallery, a kind of power station and cavity group waterproofing and leakage-stopping comprises crack, crack waterproofing and leakage-stopping construction technology and segment joint waterproofing and leakage-stopping technology, wherein
Crack, crack waterproofing and leakage-stopping construction technology technology comprises:
1. cut and tick slot: cut in both sides, crack, crack with cutting machine earlier, use the electric impact drill tick slot then;
2. slip casting: with the poor slip casting shutoff of ditch, the face of blocking is lower than the crack basal plane;
3. polishing: in the wide distance of the about 15～25cm in seam both sides, crack, crack,, expose fresh smooth concrete surface with wet worker's sanding machine polishing;
4. filleting: after the drying, embed in the above-mentioned groove, make the surfacing of crack, crack with sealing material;
5. brushing water-repellent paint layer: at seam crossing and 2～3 layers of flexible waterproof coating of both sides brushing, the coating film forming thickness is 2～3mm;
Segment joint waterproofing and leakage-stopping technology comprises:
1. cut a hole hair, slot, tick slot: earlier at the wide 15～25cm in segment joint both sides place, artificial cutter hair, expose the fresh concrete basal plane and make it coarse, cutting into width in the seam both sides with concrete cutting machine again is that 4～5cm, the degree of depth are the slit of 5～8cm, uses electric impact drill tick slot in the slit then;
2. take out pipe: make mould with 14mmPVC sebific duct, adopt fast setting cement pressure pipe joint seal, take out the pipe operation, and reserve the diversion Grouting Pipe;
3. filleting: clean out floating ash, the earth of groove and both sides earlier with wire brush and hairbrush, embed then and stitch sealing material;
4. wipe one's face: adopt the neoprene polymer mortar to wipe one's face, water seasoning is 3～4 days after wiping one's face;
5. slip casting: earlier with grouting pump to the aqueduct setting-out, the water-soluble injecting paste material of pressure injection again, treat that slurries solidify after, remove above-mentioned pre-buried aqueduct, at last with sealing material or fast setting cement sealing.
2, the construction technology of underground gallery, power station as claimed in claim 1 and cavity group waterproofing and leakage-stopping is characterized in that: injecting paste material is that the outer penetration enhancer of fast setting cement mixed with Portland cement and gets in 1: 4 in proportion～1: 8 in the described slip casting step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100227139A CN1982541A (en) | 2005-12-14 | 2005-12-14 | Underground channel of hydroelectric station and cavity group waterproofing and leakage-stopping construction |
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| CNA2005100227139A CN1982541A (en) | 2005-12-14 | 2005-12-14 | Underground channel of hydroelectric station and cavity group waterproofing and leakage-stopping construction |
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| CN1982541A true CN1982541A (en) | 2007-06-20 |
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| CNA2005100227139A Pending CN1982541A (en) | 2005-12-14 | 2005-12-14 | Underground channel of hydroelectric station and cavity group waterproofing and leakage-stopping construction |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787731A (en) * | 2010-03-05 | 2010-07-28 | 长沙有色冶金设计研究院 | Industrial pipe culvert/tunnel gap leakage sealing method |
| CN101864778A (en) * | 2010-06-30 | 2010-10-20 | 广东省基础工程公司 | Method for leaking stoppage of external wall of underground structure |
| CN102505663A (en) * | 2011-10-14 | 2012-06-20 | 中煤建筑安装工程公司第七十三工程处 | Method for repairing seepage of concentration tank and water tank |
| CN104420485A (en) * | 2013-08-21 | 2015-03-18 | 中国二十冶集团有限公司 | Underground space leaking type water stopping method for utility tunnel |
| CN104746479A (en) * | 2015-02-03 | 2015-07-01 | 中国水利水电第十四工程局有限公司 | Diversion tunnel concrete water seepage leaking stoppage construction method |
| CN105672203A (en) * | 2016-01-05 | 2016-06-15 | 广东省水利水电科学研究院 | Blocking construction method for dyke-dam reinforced concrete culvert pipe |
| CN105696522A (en) * | 2015-12-31 | 2016-06-22 | 中国葛洲坝集团第六工程有限公司 | Grouting gallery permanent expansion joint water seepage treatment method |
| CN105952173A (en) * | 2016-04-29 | 2016-09-21 | 陆庆祥 | Method for repairing concrete flooring cracks |
| CN106014459A (en) * | 2016-07-15 | 2016-10-12 | 南京天诚创元建筑科技有限公司 | Joint filling device through grouting by virtue of lead holes and joint filling method |
| CN108086492A (en) * | 2016-11-23 | 2018-05-29 | 北京中联天盛建材有限公司 | A kind of sealing blocking method and waterproof wall body structure |
| CN108894531A (en) * | 2018-06-29 | 2018-11-27 | 广州恒盛园林股份有限公司 | Repairing building cracks method |
| CN109371861A (en) * | 2018-11-26 | 2019-02-22 | 中铁五局集团有限公司 | A kind of culvert of reinforced concrete subsiding crack infiltration Treatment Methods and repair structure |
| CN110748741A (en) * | 2019-10-23 | 2020-02-04 | 广东穗都建筑工程有限公司 | Leakage repairing method for house drain pipe |
-
2005
- 2005-12-14 CN CNA2005100227139A patent/CN1982541A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787731A (en) * | 2010-03-05 | 2010-07-28 | 长沙有色冶金设计研究院 | Industrial pipe culvert/tunnel gap leakage sealing method |
| CN101864778A (en) * | 2010-06-30 | 2010-10-20 | 广东省基础工程公司 | Method for leaking stoppage of external wall of underground structure |
| CN101864778B (en) * | 2010-06-30 | 2012-11-07 | 广东省基础工程公司 | Method for leaking stoppage of external wall of underground structure |
| CN102505663A (en) * | 2011-10-14 | 2012-06-20 | 中煤建筑安装工程公司第七十三工程处 | Method for repairing seepage of concentration tank and water tank |
| CN102505663B (en) * | 2011-10-14 | 2014-10-22 | 中煤建筑安装工程公司第七十三工程处 | Method for repairing seepage of concentration tank and water tank |
| CN104420485A (en) * | 2013-08-21 | 2015-03-18 | 中国二十冶集团有限公司 | Underground space leaking type water stopping method for utility tunnel |
| CN104420485B (en) * | 2013-08-21 | 2017-04-19 | 中国二十冶集团有限公司 | Underground space leaking type water stopping method for utility tunnel |
| CN104746479A (en) * | 2015-02-03 | 2015-07-01 | 中国水利水电第十四工程局有限公司 | Diversion tunnel concrete water seepage leaking stoppage construction method |
| CN105696522A (en) * | 2015-12-31 | 2016-06-22 | 中国葛洲坝集团第六工程有限公司 | Grouting gallery permanent expansion joint water seepage treatment method |
| CN105672203A (en) * | 2016-01-05 | 2016-06-15 | 广东省水利水电科学研究院 | Blocking construction method for dyke-dam reinforced concrete culvert pipe |
| CN105952173A (en) * | 2016-04-29 | 2016-09-21 | 陆庆祥 | Method for repairing concrete flooring cracks |
| CN105952173B (en) * | 2016-04-29 | 2018-07-27 | 陆庆祥 | A kind of craft leakage mending method of cracks on concrete floor |
| CN106014459A (en) * | 2016-07-15 | 2016-10-12 | 南京天诚创元建筑科技有限公司 | Joint filling device through grouting by virtue of lead holes and joint filling method |
| CN108086492A (en) * | 2016-11-23 | 2018-05-29 | 北京中联天盛建材有限公司 | A kind of sealing blocking method and waterproof wall body structure |
| CN108894531A (en) * | 2018-06-29 | 2018-11-27 | 广州恒盛园林股份有限公司 | Repairing building cracks method |
| CN109371861A (en) * | 2018-11-26 | 2019-02-22 | 中铁五局集团有限公司 | A kind of culvert of reinforced concrete subsiding crack infiltration Treatment Methods and repair structure |
| CN110748741A (en) * | 2019-10-23 | 2020-02-04 | 广东穗都建筑工程有限公司 | Leakage repairing method for house drain pipe |
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