CN105317021B - A kind of connection method of variable cross-section continuous rigid frame aqueduct and structure - Google Patents
A kind of connection method of variable cross-section continuous rigid frame aqueduct and structure Download PDFInfo
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- CN105317021B CN105317021B CN201510339771.8A CN201510339771A CN105317021B CN 105317021 B CN105317021 B CN 105317021B CN 201510339771 A CN201510339771 A CN 201510339771A CN 105317021 B CN105317021 B CN 105317021B
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Abstract
Connection method and structure the invention discloses a kind of variable cross-section continuous rigid frame aqueduct.Its method is to set lead-over groove between single hole aqueduct and diplopore aqueduct, by lead-over groove by linking together that two the single hole aqueducts and diplopore aqueduct of different cross section are smoothed, it is to avoid be connected mutation in the junction generation of single hole aqueduct and diplopore aqueduct；Antipriming is set in transition trough floor simultaneously, is prevented junction water from gradually penetrating into and is corroded the base plate of lead-over groove by antipriming.Method of the present invention by increasing lead-over groove in the junction of single hole aqueduct and diplopore aqueduct, solves the structural mutation that existing attachment structure is produced by single hole aqueduct and diplopore aqueduct junction, slow down connection stress.Prevent junction water from gradually penetrating into and corrode the base plate of lead-over groove by antipriming simultaneously, so as to cause the erosion damage of structural concrete and reinforcing bar, ultimately result in the cracking of construction joint, have a strong impact on the durability of aqueduct, or even the safe deficiency for influenceing structure.
Description
Technical field
Connection method and structure the present invention relates to a kind of variable cross-section continuous rigid frame aqueduct, belong to aqueduct skill in hydraulic engineering
Art field.
Technical background
With developing rapidly for China's hydraulic engineering, the application of the defeated draining continuous rigid frame aqueduct of Long span is more and more extensive.
The bottom surface of the defeated draining continuous rigid frame aqueduct of Long span is usually arch, therefore vault part is generally constituted using single cell box girder, is leaned on
Nearly arch abutment is generally constituted using dual chamber box beam, therefore the connectivity problem of single cell box girder and dual chamber box beam necessarily occurs.
The single cell box girder of existing continuous rigid frame aqueduct and dual chamber box beam be use be directly connected to mode, due to Effect in Single Cell Box Girder
Beam is different from dual chamber box section shape, a construction joint for the abrupt change of cross section necessarily occurs in tie point, at construction joint
The abrupt change of cross section can cause stress concentration, there is construction quality hidden danger, because continuous rigid frame aqueduct stroke is larger, with time slot body
Interior water body can gradually cause the erosion damage of structural concrete and reinforcing bar, ultimately result in the cracking of construction joint, have a strong impact on
The durability of aqueduct, or even influence the safety of structure.Single cell box girder and dual chamber box beam in existing most continuous rigid frame aqueduct
It is directly connected to mode, it is impossible to ensure the service life and structure safety of continuous rigid frame aqueduct.
The content of the invention
Goal of the invention of the invention is：Connection method and the structure of a kind of variable cross-section continuous rigid frame aqueduct are provided, to subtract
The stress concentration of small two kinds of different type aqueducts junction, improves the waterproof ability of junction, extends the service life of aqueduct, carries
The security reliability of aqueduct high, so as to overcome the deficiencies in the prior art.
The technical proposal of the invention is realized in this way：
A kind of connection method of variable cross-section continuous rigid frame aqueduct of the invention is that the method is crossed in single hole aqueduct and diplopore
Lead-over groove is set between groove, one is connected to by what two the single hole aqueducts and diplopore aqueduct of different cross section were smoothed by lead-over groove
Rise, it is to avoid produced with the junction of diplopore aqueduct in single hole aqueduct and be connected mutation；Sealing dress is set in transition trough floor simultaneously
Put, prevent junction water from gradually penetrating into and corrode the base plate of lead-over groove by antipriming.
In preceding method, the single hole aqueduct is shaped as rectangle, and single hole aqueduct base plate is inclined plane, inclined plane is provided with
Anchoring tooth plate, anchoring tooth plate is provided with pave-load layer, and base plate longitudinal prestressing steel beam is anchored by anchoring tooth plate.
In preceding method, the cross sectional shape of the diplopore aqueduct is day font, and centre is separated diplopore aqueduct by dividing plate
Into bottom outlet and the part of water hole two；The transition trough floor is inclined plane, and lead-over groove is connected an end section with single hole aqueduct for square
Shape；Lead-over groove is day font corresponding with diplopore aqueduct cross sectional shape with the end section that diplopore aqueduct is connected, in the middle of lead-over groove
It is provided with middle plate corresponding with diplopore aqueduct internal partition；Middle plate extends to position of the diplopore aqueduct length direction less than half, middle plate
Sealing is provided between end and the base plate of lead-over groove, by sealing closing lead-over groove bottom outlet, lead-over groove is connected one with single hole aqueduct
End is provided with bed course, and cross-section of river bottom smoothly transition is made by sealing and bed course；Antipriming is provided between bed course and sealing.
In preceding method, the sealing is provided with groove with bed course seam crossing top, and closed pore is plugged with sealing and bed course seam
Cystosepiment, is provided with U-shaped GB composite rubber water stops in the seam at the top of closed-cell foam plate, waterstop both sides are bolted on
Groove floor, is lined with GB offset plates between waterstop and groove floor, bolt is provided with pressing plate with the electrolysis of waterstop；Waterstop top
Portion is provided with polyethylene filleting plate, and its complementary space of groove is filled with acrylamide sand grout, and polyethylene filleting plate top is close with double-component polysulfide
Sealing is blocked.
In preceding method, the U-shaped GB composite rubber water stops two ends are provided with stainless steel sealing termination, stainless steel water-stopping end
Head is adhered closely to groove notch and lead-over groove web handover region, U-shaped GB compounded rubbers using modified epoxide resin adhesive
Waterstop two ends are pasted on stainless steel sealing termination, and remainder is then pasted on groove notch bottom surface.
It is according to the attachment structure of of the invention a kind of variable cross-section continuous rigid frame aqueduct that the above method is constituted, the structure bag
Single hole aqueduct and diplopore aqueduct are included, lead-over groove is provided between single hole aqueduct and diplopore aqueduct；Transition trench bottom is provided with sealing dress
Put.
In aforementioned structure, the cross sectional shape of the single hole aqueduct is rectangle, and single hole aqueduct base plate is inclined plane, in inclined plane
Anchoring tooth plate is provided with, anchoring tooth plate is provided with pave-load layer.
In aforementioned structure, dividing plate is provided with the middle of the diplopore aqueduct, cross sectional shape is day font, and diplopore aqueduct base plate is to incline
Inclined-plane；The lead-over groove is corresponding with single hole aqueduct section with the end section that single hole aqueduct is connected, lead-over groove and diplopore aqueduct
Connection an end section it is corresponding with diplopore aqueduct section, be provided with the middle of diplopore aqueduct it is corresponding with diplopore aqueduct internal partition in
Plate；Middle plate end is located adjacent to lead-over groove medium position, and middle plate end is connected through sealing with transition trough floor, diplopore aqueduct and list
One end of hole aqueduct connection is provided with bed course, and antipriming is provided between bed course and sealing.
In aforementioned structure, the sealing is provided with groove with bed course seam crossing top, and closed pore is plugged with sealing and bed course seam
Cystosepiment, is provided with U-shaped GB composite rubber water stops in the seam at the top of closed-cell foam plate, waterstop both sides are bolted on
Groove floor, is lined with GB offset plates between waterstop and groove floor, bolt is provided with pressing plate with the electrolysis of waterstop；Waterstop top
Portion is provided with polyethylene filleting plate, and its complementary space of groove is filled with acrylamide sand grout, and polyethylene filleting plate top is close with double-component polysulfide
Sealing is blocked.
In aforementioned structure, the U-shaped GB composite rubber water stops two ends are provided with stainless steel sealing termination, stainless steel water-stopping end
Head is pasted on groove notch and lead-over groove web handover region, and U-shaped GB composite rubber water stops two ends are pasted on stainless steel sealing
On termination, remainder is then pasted on groove notch bottom surface.
By adopting the above-described technical solution, the present invention is compared with prior art, the present invention by single hole aqueduct with
The method that the junction of diplopore aqueduct increases lead-over groove, solves existing attachment structure because of single hole aqueduct and diplopore aqueduct junction
The structural mutation of generation, slow down connection stress.Prevent junction water from gradually penetrating into and corrode transition by antipriming simultaneously
The base plate of groove, so as to cause the erosion damage of structural concrete and reinforcing bar, ultimately results in the cracking of construction joint, has had a strong impact on and has crossed
The durability of groove, or even influence the safe deficiency of structure.Present invention reduces the stress concentration phenomenon of structure, waterproof ability
By force, good endurance.
Figure of description
Fig. 1 is structural representation of the invention；
Fig. 2 is the partial enlarged drawing of antipriming in Fig. 1；
Fig. 3 is the connection diagram at waterstop two ends and transition cell wall；
Fig. 4 is A-A sectional views in Fig. 2；
Fig. 5 is the sectional schematic diagram of single hole aqueduct；
Fig. 6 is the sectional schematic diagram of diplopore aqueduct.
Mark in accompanying drawing for：1- single hole aqueducts；2- lead-over grooves；3- diplopore aqueducts；4- anchors tooth plate；5- pave-load layers；6-
Dividing plate；7- bottom outlets；8- water holes；Plate in 9-；10- is sealed；11- bed courses；12- antiprimings；13- water；14- closed-cell foam plates；
15-U shape GB composite rubber water stops；16- bolts；17-GB offset plates；18- pressing plates；19- polyethylene filleting plates；20- acrylamide sand grouts；
21- double-component polysulfide sealants；22- grooves；23- acrylamide sand grout circular arc chamferings, 24- waterproof layers；25- aerated concrete layers；26-
Stainless steel sealing termination.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
The connection method of a kind of variable cross-section continuous rigid frame aqueduct of the invention, as shown in figure 1, the method is in single hole aqueduct
Lead-over groove 2 is set between 1 and diplopore aqueduct 3, the single hole aqueduct and diplopore aqueduct of two different cross sections is smoothed by lead-over groove
Link together, it is to avoid produced in the junction of single hole aqueduct and diplopore aqueduct and be connected mutation；Simultaneously in transition trough floor
Antipriming 12 is set, is prevented junction water 13 from gradually penetrating into and is corroded the base plate of lead-over groove 2 by antipriming.Single hole aqueduct
1 cross sectional shape is rectangle（See Fig. 5）, single hole aqueduct base plate is inclined plane, and inclined plane is provided with anchoring tooth plate 4, anchors tooth plate
Pave-load layer 5 is provided with, base plate longitudinal prestressing steel beam is anchored by anchoring tooth plate.The cross sectional shape of diplopore aqueduct 3 is day font
（See Fig. 6）, diplopore aqueduct is separated into 8 liang of parts of bottom outlet 7 and water hole by centre by dividing plate 6；The transition trough floor is to incline
Inclined-plane, lead-over groove 2 is connected one end rectangular cross-section with single hole aqueduct 1；The end section that lead-over groove is connected with diplopore aqueduct be with
The corresponding day font of diplopore aqueduct cross sectional shape, is provided with middle plate 9 corresponding with diplopore aqueduct internal partition in the middle of lead-over groove；Middle plate prolongs
Position of the diplopore aqueduct length direction less than half is extended, sealing 10 is provided between middle plate end and the base plate of lead-over groove, passed through
Sealing closing lead-over groove bottom outlet, lead-over groove is connected one end and is provided with bed course 11 with single hole aqueduct, water is broken by sealing and bed course
Face bottom smoothly transition；Antipriming 12 is provided between bed course and sealing.As shown in Fig. 2 sealing 10 and the seam crossing top of bed course 11
Portion is provided with groove 22, and closed-cell foam plate 14 is plugged with sealing and bed course seam, and U-shaped GB is provided with the seam at the top of closed-cell foam plate
Composite rubber water stop 15, waterstop both sides are fixed on groove floor by bolt 16, are lined between waterstop and groove floor
GB offset plates 17, bolt is provided with pressing plate 18 with the electrolysis of waterstop；Waterstop top is provided with polyethylene filleting plate 19, groove remaining
Space acrylamide sand grout 20 is filled, and polyethylene filleting plate top double-component polysulfide sealant 21 is blocked.As shown in figure 3, U-shaped GB
The two ends of composite rubber water stop 15 are provided with stainless steel sealing termination 26, and stainless steel sealing termination uses modified epoxide resin adhesive
Groove notch and lead-over groove web handover region are adhered closely to, the two ends of U-shaped GB composite rubber water stops 15 are pasted on stainless steel
On sealing termination 26, remainder is then pasted on the notch bottom surface of groove 22.
The attachment structure of the of the invention a kind of variable cross-section continuous rigid frame aqueduct constituted according to the above method, as shown in figure 1,
The structure includes single hole aqueduct 1 and diplopore aqueduct 3, and lead-over groove 2 is provided between single hole aqueduct 1 and diplopore aqueduct 3；Lead-over groove 2
Bottom is provided with antipriming 12.As shown in figure 5, the cross sectional shape of single hole aqueduct 1 is rectangle, single hole aqueduct base plate is inclined plane,
Inclined plane is provided with anchoring tooth plate 4, and anchoring tooth plate is provided with pave-load layer 5.As shown in fig. 6, dividing plate 6 is provided with the middle of diplopore aqueduct 3,
Cross sectional shape is day font, and diplopore aqueduct base plate is inclined plane；An end section that the lead-over groove 2 is connected with single hole aqueduct 1 with
Single hole aqueduct section is corresponding, and lead-over groove is corresponding with diplopore aqueduct section with the end section that diplopore aqueduct is connected, and diplopore is crossed
It is provided with the middle of groove 3 and the corresponding middle plate 9 of diplopore aqueduct internal partition 6；Middle plate end is located adjacent to lead-over groove medium position, middle plate end
Portion is connected through sealing 10 with transition trough floor, and one end that diplopore aqueduct is connected with single hole aqueduct is provided with bed course 11, bed course and sealing
Between be provided with antipriming 12.As shown in Fig. 2 sealing 10 is provided with groove 22 with the seam crossing of bed course 11 top, sealing connects with bed course
Closed-cell foam plate 14 is plugged with seam, U-shaped GB composite rubber water stops 15, waterstop two are provided with the seam at the top of closed-cell foam plate
Side is fixed on groove floor by bolt 16, and the pressure of GB offset plates 17, bolt and waterstop is lined between waterstop and groove floor
Junction is provided with pressing plate 18；Waterstop top is provided with polyethylene filleting plate 19, and groove its complementary space acrylamide sand grout 20 is filled, poly- second
Alkene filleting plate top double-component polysulfide sealant 21 is blocked.As shown in figure 3, the two ends of U-shaped GB composite rubber water stops 15 are provided with
Stainless steel sealing termination 26, stainless steel sealing termination is pasted on groove notch and lead-over groove web handover region, and U-shaped GB is combined rubber
The two ends of glue waterstop 15 are pasted on stainless steel sealing termination 26, and remainder is then pasted on the notch bottom surface of groove 22.
The present invention is further remarked additionally below as follows：
The section of single hole aqueduct anchors tooth plate 4 as shown in figure 5, the base plate of single hole aqueduct is provided with, and anchoring tooth plate is provided with
Pave-load layer 5, aerated concrete layer 25 is provided with anchoring tooth plate and pave-load layer, and aerated concrete layer 25 is provided with waterproof layer 24,
Single hole aqueduct circular arc chamfering pours lightweight concrete or concrete after using, and is thereon waterproof layer 24.The section of diplopore aqueduct
As shown in Figure 6.Diplopore aqueduct dividing plate uses concrete one-piece casting, dividing plate to be provided with waterproof layer 24.
Lead-over groove section base plate, lead-over groove section in plate, lead-over groove section in, the sealing between base plate use concrete；Transition
Bed course on groove section base plate can select concrete, cementitious capillary waterproofing material, spray polyurea waterproofing coating, polyurethane
Water-repellent paint, polymer cement waterproof paint, also can select the combination of above-mentioned material；Sealing termination is using 2~5mm thickness stainless steels
Band is made, and groove notch and lead-over groove web handover region are adhered closely to using modified epoxide resin adhesive, and U-shaped GB is answered
Close rubber fastening band carries out secondary fixation using bolt, and bolt uses stainless steel bolt, 200~400mm of pitch of bolts.
Embodiment
Implementation steps of the invention are as follows：
The construction of the whole single hole aqueduct of aqueduct and diplopore aqueduct base plate is completed first, when single hole aqueduct and diplopore aqueduct base plate
Transition trough floor is completed in closure mouth stand 30 days when will join the two sections of a bridge, etc.Then plate, sealing and pad in being completed in transition trough floor
The construction of layer, while the space of reserved lead-over groove section water sealing structure；Using modified epoxide resin adhesive by stainless steel water-stopping end
Head is adhered closely to the reserved notch of waterstop and web handover region；During construction, as shown in figure 3, first stainless steel sealing termination
Notch and lead-over groove web handover region are bonded in, then U-shaped GB composite rubber water stops are installed again, it is stainless in order to clearly show that
The structure of steel sealing end, Fig. 3 is not drawn into U-shaped GB composite rubber water stops.Using closed-cell foam plate partial stowage lead-over groove
The reserved notch of section water sealing structure；GB offset plates tight bond is reserved into notch in water sealing structure；U-shaped GB compounded rubber sealings are installed
Band, its underpart tight bond is compressed in GB offset plates, top using stainless steel band steel pressing plate, and U-shaped GB is combined into rubber using bolt
Glue waterstop is tightly pressed at the groove floor of sealing and bed course, finally using acrylamide sand grout backfill closing water sealing structure preformed groove
Mouth and acrylamide sand grout circular arc chamfering.
Claims (2)
1. a kind of connection method of variable cross-section continuous rigid frame aqueduct, it is characterised in that：The method is crossed in single hole aqueduct and diplopore
Lead-over groove is set between groove, one is connected to by what two the single hole aqueducts and diplopore aqueduct of different cross section were smoothed by lead-over groove
Rise, it is to avoid produced with the junction of diplopore aqueduct in single hole aqueduct and be connected mutation；Sealing dress is set in transition trough floor simultaneously
Put, prevent junction water from gradually penetrating into and corrode the base plate of lead-over groove by antipriming；Single hole aqueduct is shaped as rectangle, single
Hole aqueduct base plate is inclined plane, and inclined plane is provided with anchoring tooth plate, and anchoring tooth plate is provided with pave-load layer, is anchored by anchoring tooth plate
Base plate longitudinal prestressing steel beam；The cross sectional shape of diplopore aqueduct is day font, and diplopore aqueduct is separated into bottom by centre by dividing plate
Hole and the part of water hole two；The transition trough floor is inclined plane, and lead-over groove is connected one end rectangular cross-section with single hole aqueduct；Cross
Aqueduct is day font corresponding with diplopore aqueduct cross sectional shape with the end section that diplopore aqueduct is connected, be provided with the middle of lead-over groove with
The corresponding middle plate of diplopore aqueduct internal partition；Middle plate extend to diplopore aqueduct length direction less than half position, middle plate end with
Sealing is provided between the base plate of lead-over groove, by sealing closing lead-over groove bottom outlet, lead-over groove is connected one end and is provided with single hole aqueduct
Bed course, cross-section of river bottom smoothly transition is made by sealing and bed course；Antipriming is provided between bed course and sealing；Sealing and pad
Layer seam crossing top is provided with groove, and closed-cell foam plate is plugged with sealing and bed course seam, is set in the seam at the top of closed-cell foam plate
There are U-shaped GB composite rubber water stops, waterstop both sides are bolted on groove floor, padded between waterstop and groove floor
There are GB offset plates, bolt is provided with pressing plate with the electrolysis of waterstop；Waterstop top is provided with polyethylene filleting plate, groove its complementary space
Filled with acrylamide sand grout, polyethylene filleting plate top is blocked with double-component polysulfide sealant；U-shaped GB composite rubber water stops two ends
Stainless steel sealing termination is provided with, stainless steel sealing termination is adhered closely to groove notch and mistake using modified epoxide resin adhesive
Aqueduct web handover region, U-shaped GB composite rubber water stops two ends are adhered closely on stainless steel sealing termination using GB offset plates,
Remainder is adhered closely to groove notch bottom surface using GB offset plates.
2. a kind of attachment structure of the variable cross-section continuous rigid frame aqueduct that method according to claim 1 is constituted, including single hole is crossed
Groove（1）With diplopore aqueduct（3）, it is characterised in that：In single hole aqueduct（1）With diplopore aqueduct（3）Between be provided with lead-over groove（2）；Cross
Aqueduct（2）Bottom is provided with antipriming（12）；Single hole aqueduct（1）Cross sectional shape be rectangle, single hole aqueduct base plate be inclined plane,
Inclined plane is provided with anchoring tooth plate（4）, anchor tooth plate and be provided with pave-load layer（5）；Diplopore aqueduct（3）Centre is provided with dividing plate（6）, cut
Face is shaped as a day font, and diplopore aqueduct base plate is inclined plane；The lead-over groove（2）With single hole aqueduct（1）One end section of connection
It is corresponding with single hole aqueduct section, lead-over groove and the end section that diplopore aqueduct is connected corresponding, the diplopore with diplopore aqueduct section
Aqueduct（3）Centre is provided with and diplopore aqueduct internal partition（6）Corresponding middle plate（9）；Middle plate end is located adjacent to position in lead-over groove
Put, middle plate end is through sealing（10）It is connected with transition trough floor, one end that diplopore aqueduct is connected with single hole aqueduct is provided with bed course
（11）, antipriming is provided between bed course and sealing（12）；Sealing（10）With bed course（11）Seam crossing top is provided with groove（22）,
Closed-cell foam plate is plugged with sealing and bed course seam（14）, U-shaped GB compounded rubbers are provided with the seam at the top of closed-cell foam plate and are stopped
Water band（15）, waterstop both sides pass through bolt（16）Groove floor is fixed on, GB offset plates are lined between waterstop and groove floor
（17）, the electrolysis of bolt and waterstop are provided with pressing plate（18）；Waterstop top is provided with polyethylene filleting plate（19）, groove remaining
Space acrylamide sand grout（20）Use double-component polysulfide sealant in filling, polyethylene filleting plate top（21）Closure；U-shaped GB is combined rubber
Glue waterstop（15）Two ends are provided with stainless steel sealing termination（26）, stainless steel sealing termination is pasted on groove notch and lead-over groove abdomen
Plate handover region, U-shaped GB composite rubber water stops（15）Two ends are pasted on stainless steel sealing termination（26）On, remainder then glues
It is affixed on groove（22）Notch bottom surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510339771.8A CN105317021B (en) | 2015-06-18 | 2015-06-18 | A kind of connection method of variable cross-section continuous rigid frame aqueduct and structure |
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| CN201510339771.8A CN105317021B (en) | 2015-06-18 | 2015-06-18 | A kind of connection method of variable cross-section continuous rigid frame aqueduct and structure |
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| CN105317021B true CN105317021B (en) | 2017-06-16 |
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| CN107034927A (en) * | 2017-06-01 | 2017-08-11 | 河北宝力工程装备股份有限公司 | Caulking type sealing component |
| CN110777732A (en) * | 2019-12-11 | 2020-02-11 | 河南省水利勘测设计研究有限公司 | Back water stopping method for joint between water inlet pool and main canal box culvert of supporting engineering |
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| CN202047396U (en) * | 2010-12-15 | 2011-11-23 | 衡水大禹工程橡塑科技开发有限公司 | U-shaped aqueduct deformation joint composite water stopper |
| CN202450427U (en) * | 2012-01-19 | 2012-09-26 | 贵州省水利水电勘测设计研究院 | Variable box variable cross-section continuous rigid frame aqueduct structure |
| RU2501907C1 (en) * | 2012-10-16 | 2013-12-20 | Вадим Михайлович Голубенко | Method to control hydraulic structure of water flow in water-receiving chamber from sediments |
| CN103132447B (en) * | 2013-01-09 | 2015-03-18 | 重庆交通大学 | Prestressed concrete variable cross-section box bridge |
| CN103015304B (en) * | 2013-01-09 | 2015-05-20 | 重庆交通大学 | Prestressed concrete variable-cross-section box girder bridge with internal tilted-leg rigid frame and construction method of prestressed concrete variable-cross-section box girder bridge |
| CN203821313U (en) * | 2014-05-09 | 2014-09-10 | 河北省水利水电第二勘测设计研究院 | Water stop device with replaceable aqueduct expansion joints |
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Address after: 550002 No. 27 South Baoshan Road, Nanming District, Guizhou, Guiyang Patentee after: Guizhou water conservancy and Hydropower Survey, design and Research Institute Co., Ltd Address before: 550002 No. 27 South Baoshan Road, Nanming District, Guizhou, Guiyang Patentee before: GUIZHOU SURVEY & DESIGN Research Institute FOR WATER RESOURCES AND HYDROPOWER |
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