CN105544481A - Bottom contact grouting arrangement structure of water conveyance tunnel steel lining and grouting method thereof - Google Patents
Bottom contact grouting arrangement structure of water conveyance tunnel steel lining and grouting method thereof Download PDFInfo
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- CN105544481A CN105544481A CN201610050986.2A CN201610050986A CN105544481A CN 105544481 A CN105544481 A CN 105544481A CN 201610050986 A CN201610050986 A CN 201610050986A CN 105544481 A CN105544481 A CN 105544481A
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- steel lining
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- grouting
- exhaust
- inlet pipe
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
- E02D2300/0007—PVC
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a bottom contact grouting arrangement structure of a water conveyance tunnel steel lining and a grouting method thereof, and aims to propose the bottom contact grouting arrangement structure of the water conveyance tunnel steel lining with convenience, safety and high reliability and the grouting method thereof; the number of embedded pipes is low; the engineering cost is saved; the construction process is simple; the construction is not interfered; and the contact grouting effect and quality can be improved. A water conveyance tunnel adopts an embedded steel lining structure; concrete is filled between the outer wall of the steel lining and a surrounding rock; a stiffening ring is arranged on the outer wall of the steel lining by spacing every section; multiple pulp moving holes are formed in the stiffening rings; the tunnel needing the contact grouting uses every 30-50 m as a grouting section; in each grouting section, pulp inlet pipes are tightly laid throughly on the outer wall of a baseplate of the steel lining, and respectively penetrate through the pulp moving holes in the stiffening rings; in each grouting section, an exhaust and pulp return pipe is arranged every 5-8 m; flower pipe sections are set in a 5-8 m range of the end parts of the exhaust and pulp return pipes; and the flower pipe sections all penetrate through the pulp moving holes in the stiffening rings.
Description
Technical field
The present invention relates to contact grouting arrangement bottom a kind of water-conveyance tunnel steel lining and carry out the method for being in the milk, be applicable to Hydraulic and Hydro-Power Engineering.
Background technology
The water-conveyance tunnel of Hydraulic and Hydro-Power Engineering, when running into extreme terrain or geological conditions, adopts embedded steel liner structure design, usually to reach the objects such as carrying or antiseepage.For realizing the sharing lood of steel lining and country rock, adopt concrete backfill between steel lining outer wall and country rock, the load part born by steel lining passes to country rock.Meanwhile, for improving the stable ability of steel liner structure critical external compressive resistance, usually stiffening ring is set at steel lining outer wall, the general 1.0 ~ 1.5m of spacing.For improving concrete backfill compaction rate, stiffening ring being arranged and alters slurry hole.
From construction level and most case history of current domestic average advanced person, after fill concrete has built 60 days, through knocking inspection, phenomenon of coming to nothing bottom steel lining is still comparatively general, and the region area that comes to nothing is greater than 0.5 ~ 1.0m
2also not within minority.From guaranteeing that the angle of steel liner structure safety is considered, need to carry out the contact grouting bottom steel lining.Current contact grouting design has following several mode usually:
(1) steel lining base plate predetermined system contact grouting hole, the general 3.0m of spacing.This mode is useful in low-alloy steel, and (standard pull tension intensity is less than 540N/mm
2) in, as Hydraulic and Hydro-Power Engineering steel lining common steels such as 16MnR, Q345.Due to position of coming to nothing, quantity cannot Accurate Prediction, therefore reserved contact grouting hole is poor with the anastomose property in region of coming to nothing, there is the closely knit and phenomenon that is that come to nothing without preformed hole position in preformed hole position, thus the poor effect in reserved contact grouting hole, and due to system perforate, cause later stage shutoff engineering quantity large, add the probability that grouting hole plugging oozes (leakage) water, unfavorable to engineering safety.
(2) later stage is drilled with contact grouting hole.In view of in aforesaid way (1), the anastomose property of preformed hole is poor, and many engineerings select later stage well cementing, and (standard pull tension intensity is less than 540N/mm to be useful in low-alloy steel
2) in.After steel lining outer wall fill concrete completes 60 days, by knock or other means check out that base plate comes to nothing position, adopt magnetic support electric drill on steel lining, be drilled with slurry-feeding hole and steam vent, aperture is not less than 12mm, then carries out contact grouting.Although which can be in the milk to region of coming to nothing targetedly, when quantity of coming to nothing is more, its perforate, sealing of hole quantity are still more, equally also there is the risk of steel plate borehole sealing seepage.When steel plate thickness is greater than 30mm, usually bore diameter is enlarged to 20 ~ 24mm, to realize contact grouting operation, but construction still acquires a certain degree of difficulty, and steel plate thickness is larger, and borehole sealing difficulty also strengthens.In addition, when bore diameter is larger, there is certain weakening to steel lining itself, and cannot stiffening plate be set, therefore unfavorable to structure.
(3) base plate adopts pre-buried contact grouting pipe.The applicability of this mode does not limit by steel strength, and high-strength steel is as 600MPa level, 800MPa level steel, for avoiding welding stress and bead crack, normally do not allow on steel lining perforate, therefore for the steel lining base plate of high-strength steel, then can only prior pre-buried contact grouting pipe.2 ~ 3 grout boxs every the pre-buried grout box of 2.0 ~ 3.0m, and are connected on a grout pipe along steel lining base plate by which, and grout pipe is drawn outside fill concrete lift surface.Due to the concretings such as contact grouting needs complete 60 days after just can carry out, be ensure construction speed, the contact grouting built-in pipe quantity of extraction is many, pipeline section is long, to construction interference comparatively greatly, also uneconomical, and grouting effect is bad.
Summary of the invention
The technical problem to be solved in the present invention is: for above-mentioned Problems existing, propose contact grouting arrangement bottom a kind of convenient, water-conveyance tunnel steel lining that safety, reliability are high and carry out the method for being in the milk, its built-in pipe quantity is few, engineering cost is saved, construction technology is simple, to construction not interference, effect and the quality of contact grouting can be improved, there is obvious project benefit.
The technical solution adopted in the present invention is: contact grouting arrangement bottom a kind of water-conveyance tunnel steel lining, described water-conveyance tunnel adopts embedded steel liner structure, with concrete backfill between steel lining outer wall and country rock, described steel lining outer wall arranges one stiffening ring every one section, stiffening ring is provided with some altering and starches hole, it is characterized in that: need the tunnel of contact grouting to be a grout compartment with every 30 ~ 50m, in each grout compartment, be close to steel lining base plate outer wall elongated lay inlet pipe and all from stiffening ring altering slurry hole pass; In each grout compartment, every 5 ~ 8m arranges an exhaust and to hold concurrently return pipe, and hold concurrently end 5 ~ 8m scope of return pipe of this exhaust is set to floral tube section, and the altering slurry hole on floral tube Duan Juncong stiffening ring is passed.
Described steel lining base plate has preformed hole, and each preformed hole corresponds to the tail end of the double return pipe of every root exhaust.
Described inlet pipe is the FUKO pipe of pvc material; Described exhaust return pipe of holding concurrently adopts the seamless steel pipe of Φ 25 ~ Φ 32.
Bottom water-conveyance tunnel steel lining, contact grouting arrangement carries out a method of being in the milk, and comprises step:
1, the burying underground of inlet pipe: getting 30 ~ 50m is a grout compartment, in each grout compartment, be close to that steel lining base plate outer wall is elongated lays inlet pipe, inlet pipe all passes from altering slurry hole bottom stiffening ring;
2, be vented burying underground of return pipe of holding concurrently: in each grout compartment, every 5 ~ 8m arranges a double return pipe of exhaust, and end 5 ~ 8m is floral tube section, and floral tube section is passed from altering in slurry hole bottom stiffening ring; Described floral tube section at least arranges the boring of a Φ 8mm every 50cm, drilling hole position all upward and arrange point-blank;
3, the extraction of built-in pipe: for high-strength steel lining, inlet pipe and the double return pipe of exhaust are all drawn from nearest free face.
Bottom the another kind of water-conveyance tunnel steel lining of the present invention, contact grouting arrangement carries out the method for being in the milk, and comprises step:
1, for low-alloy steel lining, getting 30 ~ 50m is a grout compartment, in each grout compartment, steel lining base plate offers a preformed hole every 5 ~ 8m, and arranges plug and shutoff plug in reserved aperture;
2, the burying underground of inlet pipe: in each grout compartment, is close to that steel lining base plate outer wall is elongated lays inlet pipe, and inlet pipe all passes from altering slurry hole bottom stiffening ring;
3, be vented burying underground of return pipe of holding concurrently: in each grout compartment, every 5 ~ 8m arranges a double return pipe of exhaust, and end 5 ~ 8m is set to floral tube section, and floral tube section is passed from altering in slurry hole bottom stiffening ring, the tail end aligning preformed hole of floral tube section; Described floral tube section at least arranges the boring of a Φ 8mm every 50cm, drilling hole position all upward and arrange point-blank;
4, the extraction of built-in pipe: in each grout compartment, described exhaust return pipe of holding concurrently is drawn from corresponding preformed hole (1-1), and inlet pipe is only drawn from the preformed hole of most termination, after waiting to be in the milk, cut off the pipe laying of extraction, and shutoff welding is carried out to preformed hole.
The invention has the beneficial effects as follows: contact grouting design bottom steel lining of the present invention, although still belong to the mode of the pre-buried contact grouting pipe of system, but carried out larger improvement from inlet pipe, the double return pipe pattern of exhaust and built-in pipe lead-out mode aspect, its beneficial effect is embodied in the following aspects: (standard pull tension intensity is less than 540N/mm 1, to solve low-alloy steel
2) steel lining reserves contact grouting hole mode not tool drawback targetedly, effectively can be in the milk to position of coming to nothing, every place; 2, (standard pull tension intensity is less than 540N/mm to improve low-alloy steel
2) the steel lining later stage well cementing mode sealing of hole quantity that may cause too much, security hidden trouble that risk of leakage is larger; 3, adopt special inlet pipe, continuous, multiple spot pulp can be realized, and when fill concrete is built, grout outlet can not be plugged; Inlet pipe can not only carry out effective contact grouting to steel lining base plate position of coming to nothing, and also can carry out filling to the fine gap between steel lining and fill concrete closely knit simultaneously; Owing to being multiple spot pulp, therefore contact grouting can not by the impact of cavity discontinuity; 4, exhaust return pipe of holding concurrently adopts step-by-step arrangement, and is close to position with steel lining outer wall and is set to floral tube form, therefore has the function of segmentation exhaust; Though the stiffening ring of embedded outer wall of steel pipe alters slurry hole, be also difficult to ensure to come to nothing the continuity in region; Have employed the floral tube form of segmentation exhaust, when contact grouting, empty intracavity gas can be got rid of completely, highly beneficial to raising Grouted density; 5, built-in pipe quantity of the present invention is few, and engineering cost is saved, and construction technology is simple, to construction not interference, and greatly improves effect and the quality of contact grouting, has obvious project benefit.
Accompanying drawing explanation
Fig. 1 is cross-section cutaway view of the present invention.
Fig. 2 is the partial enlarged drawing of altering slurry hole portion in the present invention.
Fig. 3 is the A-A sectional drawing of high-strength steel steel lining in invention.
Fig. 4 is the A-A sectional drawing of invention middle-low alloy steel steel lining.
Detailed description of the invention
According to low-alloy steel, (standard pull tension intensity is less than 540N/mm to the present embodiment
2) and high-strength steel between the characteristic of material, follow low-alloy steel can perforate, high-strength steel not perforate principle, carry out contact grouting design bottom water-conveyance tunnel steel lining.
As shown in Figure 1 and Figure 2, the present embodiment is contact grouting arrangement bottom a kind of water-conveyance tunnel steel lining, water-conveyance tunnel adopts embedded steel liner structure, with concrete backfill between steel lining 1 outer wall and country rock, steel lining 1 outer wall arranges one stiffening ring 2 every one section, stiffening ring is provided with some altering and starches hole 3, the tunnel of contact grouting is needed to be a grout compartment with every 30 ~ 50m, in each grout compartment, be close to that steel lining 1 base plate outer wall is elongated to be laid the inlet pipe FUKO of the pvc material (pipe) 4 and all pass from the altering slurry hole 3 stiffening ring 2; In each grout compartment, every 5 ~ 8m arranges an exhaust and to hold concurrently return pipe 5, and hold concurrently end 5 ~ 8m scope of return pipe of this exhaust is set to floral tube section 5-1, and the altering slurry hole 3 on floral tube Duan Juncong stiffening ring 2 is passed.
Embodiment one,
As shown in Figure 3, steel lining 1 is high-strength steel steel lining, and concrete implementation step is as follows:
1, the burying underground of inlet pipe 4: getting 30 ~ 50m is a grout compartment (can control very well to be as the criterion with grouting pressure and grouting quality), in each grout compartment, be close to that steel lining 1 base plate outer wall is elongated lays inlet pipe 4, inlet pipe all passes from altering slurry hole 3 bottom stiffening ring 2; Inlet pipe 4 does not adopt conventional seamless steel pipe, and select to adopt have on the market sell and in some Hydropower Project existing use a kind of can pulp and can only pulp and special grout pipe (as the FUKO pipe) material of slurry can not be entered along whole tube section;
2, burying underground of return pipe 5 of holding concurrently is vented: the quality considering to ensure contact grouting, reduce the quantity of pipe laying again as far as possible, in each grout compartment, every 5 ~ 8m arranges a double return pipe 5 of exhaust, end 5 ~ 8m is floral tube section 5-1, floral tube section from bottom stiffening ring 2 altering slurry hole 3 in pass, be close to steel lining outer wall arrange and fixed, the remaining pipeline section of the double return pipe 5 of exhaust then passes from the outside of stiffening ring 2 (should not alter in slurry hole from stiffening ring and pass, otherwise slurry effect is altered in impact); Floral tube section 5-1 at least arranges the boring (the floral tube section namely between every twice stiffening ring 2 at least arranges a boring) of a Φ 8mm every 50cm, drilling hole position all upward and arrange point-blank;
3, the extraction of built-in pipe: for high-strength steel lining, because steel lining does not allow perforate, inlet pipe 4 and the double return pipe 5 of exhaust are all drawn from nearest free face, under normal circumstances, Hydraulic and Hydro-Power Engineering water-conveyance tunnel adopts the steel lining hole section of high-strength steel general shorter, therefore the extraction length of built-in pipe can not be oversize, substantially do not affect grouting and exhaust effect.
Embodiment two,
As shown in Figure 4, steel lining is low-alloy steel steel lining, and concrete implementation step is as follows:
1, for low-alloy steel lining, (standard pull tension intensity is less than 540N/mm
2), getting 30 ~ 50m is a grout compartment (can control very well to be as the criterion with grouting pressure and grouting quality), because steel lining 1 can perforate, in each grout compartment, steel lining 1 base plate offers a preformed hole 1-1 every 5 ~ 8m, and plug and shutoff plug (preformed hole 1-1 aperture can refer to consolidation grouting hole and arranges the component such as plug, shutoff plug) are set in reserved aperture;
2, the burying underground of inlet pipe 4: in each grout compartment, is close to that steel lining 1 base plate outer wall is elongated lays inlet pipe 4, and inlet pipe all passes from altering slurry hole 3 bottom stiffening ring 2;
3, burying underground of return pipe 5 of holding concurrently is vented: the quality considering to ensure contact grouting, reduce the quantity of pipe laying again as far as possible, in each grout compartment, every 5 ~ 8m arranges a double return pipe 5 of exhaust, end 5 ~ 8m is set to floral tube section 5-1, floral tube section is passed from altering in slurry hole 3 bottom stiffening ring 2, and the tail end of floral tube section aims at preformed hole 1-1; Floral tube section at least arranges the boring of a Φ 8mm every 50cm, drilling hole position all upward and arrange point-blank;
4, the extraction of built-in pipe: in each grout compartment, described exhaust return pipe 5 of holding concurrently is drawn from corresponding preformed hole 1-1, and inlet pipe 4 is only drawn from the preformed hole 1-1 of most termination, after waiting to be in the milk, cuts off the pipe laying of extraction, and carries out shutoff welding to preformed hole.
The exhaust of above-described embodiment return pipe 5 of holding concurrently adopts the seamless steel pipe of Φ 25 ~ Φ 32.
Claims (6)
1. contact grouting arrangement bottom a water-conveyance tunnel steel lining, described water-conveyance tunnel adopts embedded steel liner structure, steel lining (1) between outer wall and country rock with concrete backfill, described steel lining (1) outer wall arranges one stiffening ring (2) every one section, stiffening ring is provided with some altering and starches hole (3), it is characterized in that: need the tunnel of contact grouting to be a grout compartment with every 30 ~ 50m, in each grout compartment, be close to steel lining (1) base plate outer wall elongated lay inlet pipe (4) and all from stiffening ring (2) altering slurry hole (3) pass; In each grout compartment, every 5 ~ 8m arranges a double return pipe (5) of exhaust, hold concurrently end 5 ~ 8m scope of return pipe of this exhaust is set to floral tube section (5-1), and altering slurry hole (3) on floral tube Duan Juncong stiffening ring (2) passes.
2. contact grouting arrangement according to claim 1, is characterized in that: described steel lining (1) base plate has preformed hole (1-1), and each preformed hole corresponds to the tail end of the double return pipe (5) of every root exhaust.
3. contact grouting arrangement according to claim 1, is characterized in that: the FUKO that described inlet pipe (4) is pvc material manages; Described exhaust return pipe (5) of holding concurrently adopts the seamless steel pipe of Φ 25 ~ Φ 32.
4. contact grouting arrangement according to claim 2, is characterized in that: the FUKO that described inlet pipe (4) is pvc material manages; Described exhaust return pipe (5) of holding concurrently adopts the seamless steel pipe of Φ 25 ~ Φ 32.
5. contact grouting arrangement as claimed in claim 3 carries out a method of being in the milk, and comprises step:
5.1, the burying underground of inlet pipe (4): getting 30 ~ 50m is a grout compartment, in each grout compartment, be close to that steel lining (1) base plate outer wall is elongated lays inlet pipe (4), inlet pipe all passes from altering slurry hole (3) of stiffening ring (2) bottom;
5.2, burying underground of hold concurrently return pipe (5) is vented: in each grout compartment, every 5 ~ 8m arranges a double return pipe (5) of exhaust, end 5 ~ 8m is floral tube section (5-1), and floral tube section is passed from altering in slurry hole (3) of stiffening ring (2) bottom; Described floral tube section (5-1) at least arranges the boring of a Φ 8mm every 50cm, drilling hole position all upward and arrange point-blank;
5.3, the extraction of built-in pipe: for high-strength steel lining, inlet pipe (4) and the double return pipe (5) of exhaust are all drawn from nearest free face.
6. contact grouting arrangement as claimed in claim 4 carries out a method of being in the milk, and comprises step:
6.1, for low-alloy steel lining, getting 30 ~ 50m is a grout compartment, in each grout compartment, steel lining (1) base plate offers a preformed hole (1-1) every 5 ~ 8m, and arranges plug and shutoff plug in reserved aperture;
6.2, the burying underground of inlet pipe (4): in each grout compartment, is close to that steel lining (1) base plate outer wall is elongated lays inlet pipe (4), and inlet pipe all passes from altering slurry hole (3) of stiffening ring (2) bottom;
6.3, burying underground of hold concurrently return pipe (5) is vented: in each grout compartment, every 5 ~ 8m arranges a double return pipe (5) of exhaust, end 5 ~ 8m is set to floral tube section (5-1), floral tube section is passed from altering in slurry hole (3) of stiffening ring (2) bottom, and the tail end of floral tube section aims at preformed hole (1-1); Described floral tube section at least arranges the boring of a Φ 8mm every 50cm, drilling hole position all upward and arrange point-blank;
6.4, the extraction of built-in pipe: in each grout compartment, described exhaust return pipe (5) of holding concurrently is drawn from corresponding preformed hole (1-1), and inlet pipe (4) is only drawn from the preformed hole (1-1) of most termination, after waiting to be in the milk, cut off the pipe laying of extraction, and shutoff welding is carried out to preformed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050986.2A CN105544481B (en) | 2016-01-26 | 2016-01-26 | Water-conveyance tunnel steel lining bottom surface grouting arrangement and its method being in the milk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050986.2A CN105544481B (en) | 2016-01-26 | 2016-01-26 | Water-conveyance tunnel steel lining bottom surface grouting arrangement and its method being in the milk |
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| CN105544481A true CN105544481A (en) | 2016-05-04 |
| CN105544481B CN105544481B (en) | 2017-07-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235391A (en) * | 2018-11-01 | 2019-01-18 | 中国电建集团成都勘测设计研究院有限公司 | The surface grouting structure of diversion outlet closuring concrete |
| CN111666618A (en) * | 2020-05-27 | 2020-09-15 | 中国电建集团中南勘测设计研究院有限公司 | Design method of side type water inlet/outlet diffusion section body type |
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| CN202181542U (en) * | 2011-07-04 | 2012-04-04 | 中国水电顾问集团华东勘测设计研究院 | Front-back local steel liner structure for gate slot of diversion tunnel |
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| CN205399361U (en) * | 2016-01-26 | 2016-07-27 | 中国电建集团华东勘测设计研究院有限公司 | Water delivery tunnel steel lining bottom contact arrangement structure that is in milk |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235391A (en) * | 2018-11-01 | 2019-01-18 | 中国电建集团成都勘测设计研究院有限公司 | The surface grouting structure of diversion outlet closuring concrete |
| CN111666618A (en) * | 2020-05-27 | 2020-09-15 | 中国电建集团中南勘测设计研究院有限公司 | Design method of side type water inlet/outlet diffusion section body type |
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| Publication number | Publication date |
|---|---|
| CN105544481B (en) | 2017-07-28 |
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