CN103291309B - Treating method for unfavorable geologic body on one side of axis of main chamber of water sealed cave storage - Google Patents
Treating method for unfavorable geologic body on one side of axis of main chamber of water sealed cave storage Download PDFInfo
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- CN103291309B CN103291309B CN201310268126.2A CN201310268126A CN103291309B CN 103291309 B CN103291309 B CN 103291309B CN 201310268126 A CN201310268126 A CN 201310268126A CN 103291309 B CN103291309 B CN 103291309B
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Abstract
The invention discloses a treating method for an unfavorable geologic body on one side of an axis of a main chamber of a water sealed cave storage. When the main chamber (1) is excavated and the unfavorable geologic body exists on one side of the axis of the main chamber (1), part of rock on the side of the unfavorable geologic body can be reserved in the main chamber (1) on the premise that the whole surrounding rock quality is good to form a natural inclined rock column (2) to support the unfavorable geologic body; and an included angle alpha between a longitudinal outer surface (2a) of the inclined rock column (2) and the bottom of the main chamber (1) is an acute angle, the bottom width of the inclined rock column (2) is smaller than that of the main chamber (1), and the height of the inclined rock column (2) is smaller than that of the main chamber (1). By means of reserving of the rock column, the construction problem of the unfavorable geologic body on one side of the axis of the main chamber of the water sealed cave storage is solved, construction difficulties are reduced, and construction costs are decreased.
Description
Technical field
The invention belongs to Construction Technique of Underground Works, there is the processing method of unfavorable geologic body in the side being specifically related to a kind of water seal cave depot main cavern axis.
Background technology
Underground water seal cave depot selects strange land to refill a kind of storing mode of the underground space product produced in oil refining process.Underground water seal cave depot have occupation of land less, invest the advantages such as little, loss is few, operation management expense is low, security performance is high, it is little to pollute, handling speed is fast, memory space is large, emergency capability is strong, long service life, become at present the main oil storage method of oil, natural gas equal energy source in the world.Underground water seal cave depot is typically chosen in hard, that integrality is good massive rock tagma, and has weak water penetration region and build, but in actual mechanical process, local rock mass there will be adverse geological condition.When the side of main cavern axis exists unfavorable geologic body, but overall quality of surrounding rock still can when, if main cavern large cross section excavation conveniently, because of rock crusher, self-stable ability is poor, very easily caves in, and makes that difficulty of construction increases, supporting intensity is high; Or adopt the method for stage excavation, lower floor's excavation still has larger blast disturbance to the position that shaping has been excavated on upper strata, more easily makes above-mentioned unfavorable geologic body occur caving in.
Summary of the invention
The object of this invention is to provide the processing method that axis side, a kind of water seal cave depot main cavern exists unfavorable geologic body, to reduce difficulty of construction, and can construction cost be reduced.
In order to achieve the above object, there is the processing method of unfavorable geologic body in axis side, the main cavern of a kind of water seal cave depot provided by the invention, when excavating main cavern (1), when the side of main cavern (1) axis exists unfavorable geologic body, but overall quality of surrounding rock still can prerequisite under, can the part rock mass of side, unfavorable geologic body place be reserved in main cavern (1), be formed and naturally tilt rock pillar (2) to support unfavorable geologic body; Longitudinal outer surface (2a) of described inclination rock pillar (2) and the angle α of main cavern (1) bottom surface are acute angle, and the bottom width of inclination rock pillar (2) is less than the bottom width of main cavern (1), the height of inclination rock pillar (2) is less than the height of main cavern (1).
In main cavern, there be the harmful geology structure crossing with main cavern axis low-angle, and there is intrusive vein in cave depot district, be referred to as and there is unfavorable geologic body in axis side, main cavern.When excavating, unfavorable geologic body is easy to along structural plane roof completely failing; Because the excavation span of main cavern is comparatively large, if mechanically very easily occur caving according to design size excavation.
For avoiding above-mentioned unfavorable geologic body to occur partial collapse when constructing, the rock mass near unfavorable geologic body can be reserved in main cavern according to field condition, Blasting Excavation not carried out to this position, make unfavorable geology physical efficiency utilize reserved rock mass to reach stable object.Reserved longitudinal outer surface of inclination rock pillar and the angle α of bottom surface, main cavern are acute angle, and the bottom width L1 of inclination rock pillar is less than the bottom width L of main cavern, the height of inclination rock pillar is less than the height of main cavern, with ensure to run in Qi Zhu cavern deposit the liquid phase of product and the balance of gas phase.
Beneficial effect: structure is simple, be skillfully constructed, by the method for reserved rock pillar, solves the construction difficult problem that axis side, water seal cave depot main cavern exists unfavorable geologic body, reduces difficulty of construction, and decrease construction cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is further described in detail:
There is the processing method of unfavorable geologic body in axis side, a kind of water seal cave depot main cavern as shown in Figure 1, when excavating main cavern 1, when the side of main cavern 1 axis exists unfavorable geologic body (as there being the harmful geology structure crossing with main cavern axis low-angle in main cavern, or in cave depot district, there is intrusive vein, be referred to as and there is unfavorable geologic body in axis side, main cavern), but overall quality of surrounding rock still can prerequisite under, can the part rock mass of side, unfavorable geologic body place be reserved in main cavern 1, form natural inclination rock pillar 2 to support unfavorable geologic body, namely the rock pillar of dangerous side in main cavern 1 is not excavated.Longitudinal outer surface 2a of inclination the rock pillar 2 and angle α of bottom surface, main cavern 1 is acute angle, and the bottom width of inclination rock pillar 2 is less than the bottom width of main cavern 1, with ensure to run in Qi Zhu cavern 1 deposit the liquid equilibrium of product; The height of inclination rock pillar 2 is less than the height of main cavern 1, with ensure to run in Qi Zhu cavern 1 deposit the gas-liquid equilibrium of product.
Claims (1)
1. there is the processing method of unfavorable geologic body in axis side, a water seal cave depot main cavern, it is characterized in that: when excavating main cavern (1), when the side of main cavern (1) axis exists unfavorable geologic body, but overall quality of surrounding rock still can prerequisite under, can the part rock mass of side, unfavorable geologic body place be reserved in main cavern (1), be formed and naturally tilt rock pillar (2) to support unfavorable geologic body; Longitudinal outer surface (2a) of described inclination rock pillar (2) and the angle α of main cavern (1) bottom surface are acute angle, and the bottom width of inclination rock pillar (2) is less than the bottom width of main cavern (1), the height of inclination rock pillar (2) is less than the height of main cavern (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310268126.2A CN103291309B (en) | 2013-06-28 | 2013-06-28 | Treating method for unfavorable geologic body on one side of axis of main chamber of water sealed cave storage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310268126.2A CN103291309B (en) | 2013-06-28 | 2013-06-28 | Treating method for unfavorable geologic body on one side of axis of main chamber of water sealed cave storage |
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| Publication Number | Publication Date |
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| CN103291309A CN103291309A (en) | 2013-09-11 |
| CN103291309B true CN103291309B (en) | 2015-03-25 |
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| CN201310268126.2A Active CN103291309B (en) | 2013-06-28 | 2013-06-28 | Treating method for unfavorable geologic body on one side of axis of main chamber of water sealed cave storage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108361068B (en) * | 2018-01-09 | 2019-07-26 | 中石化上海工程有限公司 | A kind of cavern's Varied section design method of underground water seal cave depot |
| CN112610250B (en) * | 2020-12-14 | 2021-12-24 | 中铁隧道局集团有限公司 | Method for dismantling three rock pillar supports of large-span underground cave depot |
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| CN1804375A (en) * | 2005-01-14 | 2006-07-19 | 上海隧道工程股份有限公司 | Immersed tube tunnel final joints structure form and use method thereof |
| CN100451295C (en) * | 2007-08-17 | 2009-01-14 | 中铁十二局集团有限公司 | Tunnel dredging method suitable for railway large section IV, V class rock tunnel |
| CN102296961B (en) * | 2011-05-31 | 2013-11-27 | 中铁二十局集团有限公司 | Karst tunnel large-scale cavern processing method |
| 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 |
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