CN202031601U - Shaft sealing plug structure of underground water-sealed oil storage cave - Google Patents
Shaft sealing plug structure of underground water-sealed oil storage cave Download PDFInfo
- Publication number
- CN202031601U CN202031601U CN 201120109588 CN201120109588U CN202031601U CN 202031601 U CN202031601 U CN 202031601U CN 201120109588 CN201120109588 CN 201120109588 CN 201120109588 U CN201120109588 U CN 201120109588U CN 202031601 U CN202031601 U CN 202031601U
- Authority
- CN
- China
- Prior art keywords
- sealing
- plug
- sealing plug
- vertical shaft
- oil storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003860 storage Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 title abstract description 9
- 239000011435 rock Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 abstract 2
- 238000010008 shearing Methods 0.000 description 3
- 230000002153 concerted effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007914 intraventricular administration Methods 0.000 description 1
- 238000007620 mathematical function Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Earth Drilling (AREA)
Abstract
The utility model discloses a shaft sealing plug structure of an underground water-sealed oil storage cave, which comprises a shaft, a sealing plug, a formwork and a contact face. The sealing plug is sleeved on the shaft, the formwork is arranged under the sealing plug, and the contact face is arranged on the sealing plug and is in contact with external rocks. Force model of the sealing plug is changed from a pull-rod-press-rod type to a purely press-rod type by changing the geometric shape of the contact face, so that pull stress in the sealing plug concrete structure is reduced as much as possible or eliminated if possible.
Description
Technical field
The utility model relates to a kind of sealing-plug structure, particularly a kind of underground water sealed oil storage in rock caverns vertical shaft sealing-plug structure.
Background technology
Underground water sealed oil storage in rock caverns turnover oil-piping mainly is arranged in the operation vertical shaft, and for preventing that band presses oil gas to leak by vertical shaft in the underground chamber, vertical shaft need carry out encapsulation process.The main at present sealing means that adopts is to seal with the cast-in-situ concrete sealing-plug in the vertical shaft near the top, cavern.Sealing-plug requires to bear the effect basic combined effect of all loads thereon, should be able to bear the hole intraventricular pressure that is not less than 1.0MPa simultaneously.The thickness rate of striding of sealing-plug is generally less than 4, and structure can be calculated by pure compressed member, and like this, concrete can be brought into play its good material compressive property effectively, and structure is subjected to power transfer mode by it simultaneously, and support force is passed to the rock mass base station.In the conventional structure design, usually sealing-plug is considered as drawing-depression bar model or mathematical model calculate.Sealing-plug build-in part in rock mass, promptly the shape of keyway can be considered favourable geometry, the base station general recommendations was tilted by 1: 3.The sealing-plug keyway contact surface that adopts in the engineering is linear (or claiming wedge) and has high dip angle at present, from how much proterties of sealing-plug that adopt, mainly be that two superimposed circular cone bench-types, mainly stress surface---concrete and rock mass contact surface are linear (or claiming wedge) and have high dip angle up and down.Obviously, from the angle analysis of structural mechanics as can be known, have on the contact surface of high dip angle mainly based on normal pressure and shearing, if make a concerted effort (being the base station reaction force) of all normal force and shearing points to the load point position of centre of gravity that the some position is lower than sealing-plug, necessarily there is tensile stress in the certain bottom of sealing-plug.
The utility model content
Technical problem to be solved in the utility model provides a kind of underground water sealed oil storage in rock caverns vertical shaft sealing-plug structure, it adopts the geometry that changes contact surface, the stress model that reaches sealing-plug is pure depression bar model by pull bar-depression bar model, the sealing-plug concrete structure is not occurred as much as possible or reduces tensile stress.
For solveing the technical problem, the utility model provides a kind of underground water sealed oil storage in rock caverns vertical shaft sealing-plug structure, it is characterized in that, it comprises vertical shaft, sealing-plug, template and contact surface, sealing-plug is enclosed within on the vertical shaft, template is positioned at the below of sealing-plug, and contact surface is positioned on the sealing-plug and with the rock mass of outside and contacts.
Preferably, the geometry of described contact surface is the quick-fried shaping of presplitting light.
Positive progressive effect of the present utility model is: the utility model adopts the geometry that changes contact surface, the stress model that reaches sealing-plug is pure depression bar model by pull bar-depression bar model, the sealing-plug concrete structure is not occurred as much as possible or reduce tensile stress, thereby improve the density and the impermeability of sealing-plug, material itself is reached to greatest extent prevent that oil gas from causing leakage by the vertical shaft sealing-plug.
Description of drawings
Fig. 1 is the structural representation of the utility model underground water sealed oil storage in rock caverns vertical shaft sealing-plug structure.
Fig. 2 is the schematic cross-section of the A-A direction of Fig. 1.
Fig. 3 is the schematic cross-section of the B-B direction of Fig. 1.
The specific embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, the utility model underground water sealed oil storage in rock caverns vertical shaft sealing-plug structure comprises vertical shaft 2, sealing-plug 3, template 4 and contact surface 5, sealing-plug 3 is enclosed within on the vertical shaft 2, and template 4 is positioned at the below of sealing-plug 3, and contact surface 5 is positioned on the sealing-plug 3 and with the rock mass 1 of outside and contacts.
The utility model underground water sealed oil storage in rock caverns vertical shaft sealing-plug structure be in rock mass 1 at first segmentation presplitting light pop to dig and form vertical shaft 2, when segmentation proceeds to the position of sealing-plug 3, need and vertical shaft 2 one-shot formings, promptly form the vertical shaft keyway, behind vertical shaft 2 up/down perforations, basal surface position at sealing-plug 3 props up lifting plate 4, in the careful blocking of colligation behind the reinforcing bar, follow concreting sealing-plug 3, sealing-plug 3 constitutes contact surface 5 with rock mass 1 on the vertical shaft keyway, the geometry of contact surface 5 is the quick-fried shaping of presplitting light, the mathematic(al) representation of the geometry of contact surface 5 is repeatedly functions of all monobasics, exponential function, non-line shape function such as power function, or continuously uninterrupted line shape function (broken line shape), or the combination of non-line shape function and line shape function, comprise circle, oval, parabola shaped, grown forms such as exponential type.
Because the geometry of contact surface 5 can be expressed formula by setting up a certain mathematical function, height and diameter according to vertical shaft determine that as calculated make a concerted effort (being the base station reaction force) of all normal force and shearing pointed to the load point position of centre of gravity that the position must be higher than sealing-plug on the contact surface.
Though more than described the specific embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these embodiments.Therefore, protection domain of the present utility model is limited by appended claims.
Claims (2)
1. a underground water sealed oil storage in rock caverns vertical shaft sealing-plug structure is characterized in that it comprises vertical shaft, sealing-plug, template and contact surface, and sealing-plug is enclosed within on the vertical shaft, and template is positioned at the below of sealing-plug, and contact surface is positioned on the sealing-plug and with the rock mass of outside and contacts.
2. underground water sealed oil storage in rock caverns vertical shaft sealing-plug structure as claimed in claim 1 is characterized in that the geometry of described contact surface is the quick-fried shaping of presplitting light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120109588 CN202031601U (en) | 2011-04-14 | 2011-04-14 | Shaft sealing plug structure of underground water-sealed oil storage cave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120109588 CN202031601U (en) | 2011-04-14 | 2011-04-14 | Shaft sealing plug structure of underground water-sealed oil storage cave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031601U true CN202031601U (en) | 2011-11-09 |
Family
ID=44893903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120109588 Expired - Lifetime CN202031601U (en) | 2011-04-14 | 2011-04-14 | Shaft sealing plug structure of underground water-sealed oil storage cave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031601U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121566A (en) * | 2011-11-18 | 2013-05-29 | 中国石油化工集团公司 | Cavern nitrogen displacement method used for underground water-sealed rock cavern oil storages |
| CN107989639A (en) * | 2017-12-08 | 2018-05-04 | 福州大学 | Underground water seal cave depot concrete dense blocking and its parameter determination method and construction method |
| CN114509344A (en) * | 2020-11-16 | 2022-05-17 | 中国石油天然气集团有限公司 | Parameter determination method and device for sealing plug of underground water-sealed petroleum cavern |
-
2011
- 2011-04-14 CN CN 201120109588 patent/CN202031601U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121566A (en) * | 2011-11-18 | 2013-05-29 | 中国石油化工集团公司 | Cavern nitrogen displacement method used for underground water-sealed rock cavern oil storages |
| CN103121566B (en) * | 2011-11-18 | 2015-05-13 | 中国石油化工集团公司 | Cavern nitrogen displacement method used for underground water-sealed rock cavern oil storages |
| CN107989639A (en) * | 2017-12-08 | 2018-05-04 | 福州大学 | Underground water seal cave depot concrete dense blocking and its parameter determination method and construction method |
| CN114509344A (en) * | 2020-11-16 | 2022-05-17 | 中国石油天然气集团有限公司 | Parameter determination method and device for sealing plug of underground water-sealed petroleum cavern |
| CN114509344B (en) * | 2020-11-16 | 2024-03-01 | 中国石油天然气集团有限公司 | Parameter determination method and device for underground water seal petroleum cave depot sealing plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: Sinopec Corp. Patentee after: SINOPEC Shanghai Engineering Company Limited Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: Sinopec Corp. Patentee before: Sinopec Shanghai Engineering Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |