CN206888991U - Super-span dome hollow ring in underground nuclear reactor cavern excavates structure - Google Patents
Super-span dome hollow ring in underground nuclear reactor cavern excavates structure Download PDFInfo
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- CN206888991U CN206888991U CN201720758460.XU CN201720758460U CN206888991U CN 206888991 U CN206888991 U CN 206888991U CN 201720758460 U CN201720758460 U CN 201720758460U CN 206888991 U CN206888991 U CN 206888991U
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Abstract
The utility model discloses the hollow ring of underground nuclear reactor cavern super-span dome to excavate structure, the structure includes the hollow pilot tunnel positioned at dome central lower, the 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 the hollow pilot tunnel and cavern's rock mass to uncover face, a construction passage is provided between the dome profile scar and hollow pilot tunnel, the construction passage diametrically extends from dome outward flange to hollow pilot tunnel, and is connected with hollow pilot tunnel.The utility model is first along construction passage to dome interior construction, construct to after hollow pilot tunnel, shape excavates to radially outer in a ring, be it is a kind of excavated successively in sudden strain of a muscle shape from middle outwards portion in a manner of, larger working face can be formed and carry out operation, 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 ring 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.
Utility model content
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,
The hollow ring of safe and reliable underground nuclear reactor cavern super-span dome excavates structure.
To achieve the above object, the hollow ring 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, a construction passage, the construction passage is provided between the dome profile scar and hollow pilot tunnel
Diametrically extend from dome outward flange to hollow pilot tunnel, and connected with hollow pilot tunnel.
Further, the construction passage be located on the horizontal plane where dome profile arch springing, and the passage that will construct is arranged at
Inside dome, excavation construction workload is saved.
Further, the hollow pilot tunnel cross section is curved, and the construction channel cross-section is rectangular, is easy to construct
Operation.Angle between the hollow pilot tunnel and construction passage is 90 °, the current and transport being easy in work progress.
Further, it is provided with construction passage face between the construction passage and cavern's rock mass.The construction is logical
Gib is provided with road face, deformation, destruction and the other influences brought for guarding construction at any time to rock mass.
The utility model is first along construction passage to dome interior construction, and after hollow pilot tunnel is arrived in construction, shape is to radially in a ring
Outside is excavated, be it is a kind of from middle outwards portion in dodging in a manner of shape excavates successively, larger working face progress operation can be formed, its
Inter process interference is small, can improve efficiency of construction and construction safety.
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 and dodge shape distribution setting in a ring, 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 is the structural representation that super-span dome hollow ring in the utility model underground nuclear reactor cavern excavates structure
Figure.
Fig. 2 is Fig. 1 I-I diagrammatic cross-sections.
In figure：Construction passage 1, hollow pilot tunnel 2, excavate the face 3 that uncovers, construction passage face 4, dome profile scar 5, vault
Push up profile arch springing 6.
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 ring of underground nuclear reactor cavern super-span dome of the utility model excavates
Structure includes hollow pilot tunnel 2 and construction passage 1.Hollow pilot tunnel 2 is located at dome central lower, by the middle part edge of dome profile scar 5
The horizontal plane that vertical direction is extended to where dome profile arch springing 6.Construction passage 1 is located at dome profile scar 5 and hollow pilot tunnel 2
Between, diametrically extend at dome outward flange one to hollow pilot tunnel 2, and connected with hollow pilot tunnel 2.
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 are provided with construction passage face 4.
When being excavated to underground nuclear reactor cavern super-span dome, it comprises the following steps：
1) excavation construction passage 1, diametrically excavated from the outer edge of dome one to dome central lower, form construction
Passage 1, construct and construction passage face 4 is set between passage 1 and cavern's rock mass, set on construction passage face 4 interim
Supporting.
2) the hollow pilot tunnel 2 that digging diameter is about 12m, opened straight up by the end of construction passage 1, dome central lower
Dig, until dome profile scar 5, form hollow pilot tunnel 2, hollow pilot tunnel 2 connects with passage 1 of constructing, and such workmen can be with
The construction of hollow pilot tunnel 2 is carried out from construction passage 1, the excavation of the hollow pilot tunnel 2 of supporting discloses face 3；Hollow pilot tunnel 2 and Dong Shiyan
Set excavation to uncover face 3 between body, uncovered in excavation and gib is set on face 3.
3) digged in a ring to dome edge along hollow pilot tunnel 2, until forming complete dome.Along hollow pilot tunnel 2 in a ring
Dig to dome edge, using it is a kind of from middle outwards portion in dodging by the way of shape excavates successively, larger working face can be formed and entered
Row operation, the interference of its inter process is small, can improve efficiency of construction and construction safety；In digging process, to the dome wheel disclosed
Wide scar 5 carries out supporting；And strengthen the supporting to dome profile arch springing 6.
In above-mentioned work progress, in order to ensure construction safety, to excavating exposure face 3, construction passage face 4, dome wheel
Wide scar 5 and dome profile arch springing 6 needs emphasis supporting, big compared with other positions based on the deformation level for calculating these positions of analysis,
For crucial controlling position, safety monitoring is strengthened to crucial controlling position, the information such as stress, deformation can be fed back in time, be advantageous to and
When 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 ring 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),
A construction passage (1) is provided between the dome profile scar (5) and hollow pilot tunnel (2), the construction passage (1) is from vault
Push up outward flange diametrically to hollow pilot tunnel (2) to extend, and connected with hollow pilot tunnel (2).
2. super-span dome hollow ring in underground nuclear reactor cavern according to claim 1 excavates structure, its feature
It is：The construction passage (1) is located on the horizontal plane where dome profile arch springing (6).
3. super-span dome hollow ring in underground nuclear reactor cavern according to claim 1 excavates structure, its feature
It is：Hollow pilot tunnel (2) cross section is curved, and described construction passage (1) cross section is rectangular.
4. the hollow ring of a kind of underground nuclear reactor cavern super-span dome according to claim 2 excavates structure, its
It is characterised by：Construction passage face (4) is provided between the construction passage (1) and cavern's rock mass.
5. the hollow ring of a kind of underground nuclear reactor cavern super-span dome according to claim 3 excavates structure, its
It is characterised by：Angle between the hollow pilot tunnel (2) and construction passage (1) is 90 °.
6. the hollow ring of a kind of underground nuclear reactor cavern super-span dome according to claim 4 excavates structure, its
It is characterised by：Gib is provided with the construction passage face (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720758460.XU CN206888991U (en) | 2017-06-27 | 2017-06-27 | Super-span dome hollow ring in underground nuclear reactor cavern excavates structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720758460.XU CN206888991U (en) | 2017-06-27 | 2017-06-27 | Super-span dome hollow ring in underground nuclear reactor cavern excavates structure |
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| Publication Number | Publication Date |
|---|---|
| CN206888991U true CN206888991U (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720758460.XU Active CN206888991U (en) | 2017-06-27 | 2017-06-27 | Super-span dome hollow ring in underground nuclear reactor cavern excavates structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288654A (en) * | 2017-06-27 | 2017-10-24 | 长江勘测规划设计研究有限责任公司 | Super-span dome hollow ring in underground nuclear reactor cavern excavates structure and excavation method |
-
2017
- 2017-06-27 CN CN201720758460.XU patent/CN206888991U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288654A (en) * | 2017-06-27 | 2017-10-24 | 长江勘测规划设计研究有限责任公司 | Super-span dome hollow ring in underground nuclear reactor cavern excavates structure and excavation method |
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