CN206903667U - Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure - Google Patents
Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure Download PDFInfo
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- CN206903667U CN206903667U CN201720763658.7U CN201720763658U CN206903667U CN 206903667 U CN206903667 U CN 206903667U CN 201720763658 U CN201720763658 U CN 201720763658U CN 206903667 U CN206903667 U CN 206903667U
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Abstract
The utility model discloses hollow be oriented to of underground nuclear reactor cavern super-span dome to excavate structure, the structure includes the hollow pilot tunnel positioned at dome central lower, hollow pilot tunnel is as the horizontal plane where dome profile scar middle part vertically extends to dome profile arch springing, excavation is provided between hollow pilot tunnel and cavern's rock mass to uncover face, the first construction passage and the second construction passage are provided between dome profile scar and hollow pilot tunnel, first construction passage diametrically extends from dome outward flange side to hollow pilot tunnel, second construction passage has the interconnection being located at the first construction passage in same direction, interconnection diametrically extends from dome outward flange opposite side to hollow pilot tunnel, first construction passage, interconnection connects at hollow pilot tunnel.The utility model can reduce excavation span temporarily, and can reduce the level of the surrouding rock stress in work progress and deformation level, and the interference of its inter process is small, can improve efficiency of construction and construction safety.
Description
Technical field
The utility model belongs to nuclear power engineering technical field, in particular to a kind of underground core in nuclear power station development ＆ construction
Super-span dome hollow be oriented in reactor cavern excavates structure.
Background technology
China proposes in " 12 " ENERGY PLANNING, to accelerate to promote Construction of Nuclear Electricity.In the shadow of Fukushima, Japan nuclear accident
Under sound, the nuclear industry just walked out from the shade of Chernobyl has been absorbed in low ebb again.Examination ＆ approval of the country to nuclear power projects are more
Strict and prudent, the security requirement to nuclear power plant is higher.Then, ground nuclear power station whole or nuclear island are partially disposed in underground
Novel underground nuclear power station will provide new approach for nuclear power developing.
The third generation business underground nuclear power station cavity group that China is studied at present, its nuclear reactor cavern dome excavate span and reached
To about 48m, span is excavated much larger than existing underground nuclear power station both at home and abroad, also greater than domestic and international Hydropower Station Underground cavern
Span is excavated, therefore, its excavation technology is one of key content of underground nuclear power station feasibility.
In large-span underground chamber digging process, the stable safety of its crown is crucial.Similar dome structure, in part water power
Standing in pressure regulative wells once has application, and its excavation construction process is also to be applied in exploration：Directly from diameter end point to offside
Push forward comprehensively；Or pilot tunnel is diametrically first got through, then dig shaping by pilot tunnel both sides；Or first beaten upwards along dome Internal periphery
The pilot tunnel to spiral, then dig shaping from top to bottom by pilot tunnel；Or first pilot tunnel is beaten to center along radius, upward pilot tunnel is connect to top
Arch, then shaping is digged from bottom to top；Or sector symmetrically digs shaping.These excavation technologies can be summarized as two classes：Vertically to branch
Push ahead or left and right promotes or horizontal to slicing stoping；And these excavation technologies are mainly used in general span dome construction, no
Adapt to the excavation with super-span dome.
Super-span dome excavation such as its excavation technology in underground nuclear reactor cavern is improper, easily causes construction delay, matter
Out of control, investment is measured when increasing, be serious or even security incident can be triggered.
The content of the invention
The purpose of this utility model be in view of the deficiencies of the prior art, propose a kind of program it is simple, it is easy for construction,
Hollow be oriented to of safe and reliable underground nuclear reactor cavern super-span dome excavates structure.
To achieve the above object, the hollow guiding of underground nuclear reactor cavern super-span dome designed by the utility model
Structure is excavated, it is characterized in that, including the hollow pilot tunnel positioned at dome central lower, and the hollow pilot tunnel is by dome profile
The horizontal plane vertically extended to where dome profile arch springing in the middle part of scar, sets between the hollow pilot tunnel and cavern's rock mass
It is equipped with excavation to uncover face, the first construction passage is provided between the dome profile scar and hollow pilot tunnel and the second construction is logical
Road, the first construction passage diametrically extend from dome outward flange side to hollow pilot tunnel, the second construction passage
With the interconnection being located at the first construction passage in same direction, the interconnection is from dome outward flange opposite side along directly
Footpath direction extends to hollow pilot tunnel, and the first construction passage, interconnection connect at hollow pilot tunnel.
Further, the second construction passage also includes two vertical passages, and two vertical passages are with laterally leading to
Road is vertical, diametrically extends respectively from dome outward flange both sides to hollow pilot tunnel, exists with the first construction passage, interconnection
Connected at hollow pilot tunnel.Second construction passage is T-shaped, and further increase construction passage uncovers face.
Further, the first construction passage is located on the horizontal plane where dome profile arch springing, by passage of constructing
It is arranged inside dome, saves excavation construction workload.
Further, the hollow pilot tunnel cross section is curved, and the first construction passage, interconnection, longitudinal direction are logical
Road cross section is rectangular, is easy to construction operation.Between the hollow pilot tunnel and the first construction passage, interconnection, vertical passage
Angle be 90 °, the current and transport being easy in work progress.
Further, it is provided with and digs between the first construction passage, interconnection, vertical passage and cavern's rock mass
Face.Described dig is provided with gib on face, for guard at any time construction rock mass is brought deformation, destroy and
Other influences.
The utility model has the following advantages that：
1st, reduce the deformation in work progress to dome center rock mass, destroy, ensure that dome structure is stable in digging process,
Improve construction quality；
2nd, the dome division center of most fragile in engineering is formed at first, and the leading supporting in the position is handled；
3rd, passage is constructed positioned at excavating in dome structure, saves the engineering time；
4th, excavate the face that uncovers to be independently arranged by a plurality of construction passage, working face is big, and inter process interference is small.
5th, accelerate the duration, ensure that quality is out of control, improves economy, has very high safety guarantee.
Brief description of the drawings
Fig. 1, which is that the utility model underground nuclear reactor cavern super-span dome is hollow, is oriented to the structural representation for excavating structure
Figure.
Fig. 2 is Fig. 1 I-I diagrammatic cross-sections.
In figure：Construction passage 1, hollow pilot tunnel 2, excavates the face 3 that uncovers, digs face 4, dome profile scar 5, dome wheel
Wide arch springing 6, interconnection 7, vertical passage 8.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model, but the embodiment should not be understood
For to limitation of the present utility model.
As depicted in figs. 1 and 2, a kind of hollow be oriented to of underground nuclear reactor cavern super-span dome of the utility model is excavated
Structure includes hollow pilot tunnel 2, the first construction construction passage of passage 1 and second.Hollow pilot tunnel 2 is located at dome central lower, by vault
The horizontal plane that the middle part of top profile scar 5 is vertically extended to where dome profile arch springing 6.Construction passage 1 is located at dome wheel
Between wide scar 5 and hollow pilot tunnel 2, diametrically extend at dome outward flange one to hollow pilot tunnel 2, and with hollow pilot tunnel
2 connections.
The size that the present embodiment will excavate dome is diameter 48.4m, height 13.4m；There is super-large diameter for the dome
The characteristics of, the present embodiment is used from the middle construction method that outwards portion is excavated successively in shape is dodged, to adapt to super-span dome
Excavate.
In the present embodiment, hollow pilot tunnel 2 is arranged on inside dome, and its cross section is curved, and directly about 12m is hollow to lead
Hole 2 is provided with out from the vertically extending horizontal plane being located to dome profile arch springing 6 in the middle part of dome profile scar 5, hollow pilot tunnel 2
Digging uncovers face 3；Construction passage 1 is located at dome centre position, and its cross section is rectangular, and the angle between hollow pilot tunnel 2 is
90 °, construction passage 1 outside at dome one diametrically extends to hollow pilot tunnel 2, construct passage 1 and the hollow phase of pilot tunnel 2
Logical, construction passage 1 both sides, which are provided with, digs face 4.
First construction passage 1 is located at dome centre position, and first construction passage 1 outside at dome one is diametrically prolonged
Hollow pilot tunnel 2 is extended, the first construction passage 1 communicates with hollow pilot tunnel 2, and the second construction passage is T-shaped, and the second construction passage includes
The interconnection 7 communicated with hollow pilot tunnel 2 and two vertical passages 8 in diametric(al), the first construction passage
1st, the cross section of interconnection 7 and vertical passage 8 is rectangular, and the construction passage 1 of interconnection 7 and first is located at same direction,
Outer edge extends from interconnection 7 is another from hollow pilot tunnel 2 to dome, and vertical passage 8 is located at the hollow both sides of pilot tunnel 2, and longitudinal direction is logical
Road 8 extends to dome edge from hollow pilot tunnel 2, and the first construction passage 1, interconnection 7 and the both sides of vertical passage 8 are provided with expansion
Dig face 4.The cross section of first constructing pilot tunnel 1 and the second constructing pilot tunnel is in cross, and they will be divided into four inside dome
Independent sector region.
When being excavated to underground nuclear reactor cavern super-span dome, it comprises the following steps：
1) the first construction passage 1 is excavated, is diametrically excavated, is formed to dome central lower from the outer edge of dome one
First construction passage 1, sets between the first construction passage 1 and cavern's rock mass and digs face 4, set on face 4 is digged
Gib.
2) the hollow pilot tunnel 2 that digging diameter is about 12m, by first construction passage 1 end, dome central lower straight up
Excavate, until dome profile scar 5, forms hollow pilot tunnel 2, hollow pilot tunnel 2 connects with the first construction passage 1, such constructor
Member can carry out the construction of hollow pilot tunnel 2 from construction passage 1, and the excavation of the hollow pilot tunnel 2 of supporting discloses face 3；Hollow pilot tunnel 2 with
Set excavation to uncover face 3 between cavern's rock mass, uncovered in excavation and gib is set on face 3.
3) the second construction passage is excavated, to dome edge at hollow pilot tunnel 2, the second construction is excavated by T-shaped excavation is synchronous
The interconnection 7 of passage and two vertical passages 8, what gib was arranged at interconnection 7 and the both sides of vertical passage 8 digs the palm
Sub- face 4；
4) such first construction passage 1 and second construction passage surrounds 4 independent sector regions, in each sector region
It is interior synchronously to be digged to dome edge from hollow pilot tunnel 2, in digging process, supporting is carried out to the dome profile scar 5 disclosed；
It is to carry out operation in four independent construction areas, the interference of its inter process is small, therefore, can improve and apply in dome digging process
Work efficiency rate and construction safety.
In above-mentioned work progress, in order to ensure construction safety, to excavating exposure face 3, digging face 4, dome profile rock
Face 5 and dome profile arch springing 6 need emphasis supporting, big compared with other positions based on the deformation level for calculating these positions of analysis, to close
Key control position, safety monitoring is strengthened to crucial controlling position, the information such as stress, deformation can be fed back in time, be advantageous to adopt in time
Take related technical measures, it is ensured that safety.
It is described above, only it is preferred embodiment of the present utility model, not structure of the present utility model is done any
Formal limitation.Every any simple modification made according to the technical essence of the utility model to above example, it is equal
Change and modification, in the range of still falling within the technical solution of the utility model.
Claims (6)
1. a kind of hollow be oriented to of underground nuclear reactor cavern super-span dome excavates structure, it is characterised in that：Including positioned at vault
The hollow pilot tunnel (2) of central lower is pushed up, the hollow pilot tunnel (2) in the middle part of dome profile scar (5) by vertically extending to
Horizontal plane where dome profile arch springing (6), excavation is provided between the hollow pilot tunnel (2) and cavern's rock mass and is uncovered face (3),
The first construction passage (1) and the second construction passage are provided between the dome profile scar (5) and hollow pilot tunnel (2), it is described
First construction passage (1) diametrically extends from dome outward flange side to hollow pilot tunnel (2), the second construction passage tool
Have and be located at interconnection (7) in same direction with the first construction passage (1), the interconnection (7) is another from dome outward flange
Side diametrically extends to hollow pilot tunnel (2), and the first construction passage (1), interconnection (7) connect at hollow pilot tunnel (2) place
It is logical.
2. hollow be oriented to of underground nuclear reactor cavern super-span dome according to claim 1 excavates structure, its feature
It is：The second construction passage also includes two vertical passages (8), and two vertical passages (8) are hung down with interconnection (7)
Directly, diametrically extend respectively from dome outward flange both sides to hollow pilot tunnel (2), with the first construction passage (1), interconnection
(7) connected at hollow pilot tunnel (2) place.
3. hollow be oriented to of underground nuclear reactor cavern super-span dome according to claim 1 excavates structure, its feature
It is：The first construction passage (1) is located on the horizontal plane where dome profile arch springing (6).
4. hollow be oriented to of underground nuclear reactor cavern super-span dome according to claim 1 excavates structure, its feature
It is：Hollow pilot tunnel (2) cross section is curved, the first construction passage (1), interconnection (7), vertical passage (8)
Cross section is rectangular.
5. a kind of hollow be oriented to of underground nuclear reactor cavern super-span dome according to claim 3 excavates structure, its
It is characterised by：It is provided with and digs between the first construction passage (1), interconnection (7), vertical passage (8) and cavern's rock mass
Face (4).
6. a kind of hollow be oriented to of underground nuclear reactor cavern super-span dome according to claim 4 excavates structure, its
It is characterised by：The hollow pilot tunnel (2) and the first angle constructed between passage (1), interconnection (7), vertical passage (8) are
90°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720763658.7U CN206903667U (en) | 2017-06-27 | 2017-06-27 | Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720763658.7U CN206903667U (en) | 2017-06-27 | 2017-06-27 | Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure |
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| Publication Number | Publication Date |
|---|---|
| CN206903667U true CN206903667U (en) | 2018-01-19 |
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| CN201720763658.7U Active CN206903667U (en) | 2017-06-27 | 2017-06-27 | Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130977A (en) * | 2017-06-27 | 2017-09-05 | 长江勘测规划设计研究有限责任公司 | Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure and excavation method |
-
2017
- 2017-06-27 CN CN201720763658.7U patent/CN206903667U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130977A (en) * | 2017-06-27 | 2017-09-05 | 长江勘测规划设计研究有限责任公司 | Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure and excavation method |
| CN107130977B (en) * | 2017-06-27 | 2023-10-10 | 长江勘测规划设计研究有限责任公司 | Hollow guide excavation structure and excavation method for ultra-large span dome of underground nuclear reactor cavity |
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