CN102828778A - Complex salt rock underground and water dissolution joint cavity construction method - Google Patents
Complex salt rock underground and water dissolution joint cavity construction method Download PDFInfo
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- CN102828778A CN102828778A CN2012103573186A CN201210357318A CN102828778A CN 102828778 A CN102828778 A CN 102828778A CN 2012103573186 A CN2012103573186 A CN 2012103573186A CN 201210357318 A CN201210357318 A CN 201210357318A CN 102828778 A CN102828778 A CN 102828778A
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Abstract
The invention discloses a complex salt rock underground and water dissolution joint cavity construction method. The method comprises the following steps of: 1) selecting a site for a rock salt deposit; 2) enabling a water dissolution drilled well to drill through a target rock salt layer; 3) arranging an underground vertical shaft at the center of a regular hexagon; 4) excavating in the underground vertical shaft till the bottom of the target rock salt layer; 5) excavating a communicating laneway to the bottom of the water dissolution drilled well; 6) constructing a groove in the rock salt layer at the bottom of the water dissolution drilled well; 7) cutting off rock salt and transporting to the ground; 8) mounting a sealing valve at the vertical shaft end of the communicating laneway after the end of groove construction; 9) closing the valve and continuously constructing a cavern in rock salt; 10) opening the sealing valve of the communicating laneway and discharging insoluble matters at the bottom of the cavern in rock salt to the bottom of the vertical shaft; 11) discharging the insoluble matters to the ground surface; and 12) sealing the communicating laneway after the end of construction of the cavern in rock salt. According to the method disclosed by the invention, the problem that the groove construction is difficult to perform in the rock salt with high content of the insoluble matters by water dissolution-process cavity construction can be solved; by adopting the method, the usable volume of a cavity can be improved by above 90% under the same geological conditions; and the overall economy is higher than that of a pure water dissolution cavity construction method.
Description
Technical field
The present invention relates to a kind of rock salt underground storage and make cavity method, relate in particular to a kind of complicated rock salt well worker, the water-soluble associating make cavity method.
Background technology
Relative other deposit mode, rock salt is with the characteristic of its good creep, low-permeability and damage self-recovery, the energy stores, the optimal medium of high radioactive nucleus waste material permanent disposal and be acknowledged as.Rock salt is soluble in water; Utilize the water-soluble chamber technology of making to realize that ground solution mining rock salt builds underground salt cave; Water-solublely make that the chamber has that construction is prone to, operation is simple, the advantage of small investment, high efficiency, thereby solution mining is the main means that the rock salt underground storage is made the chamber at present.At present, external underground rock salt bank is nearly all built in the huge thick salt dome, is the stratiform rock salt and China can build the rock salt of underground storage, has thin thickness, interlayer is many, grade is low, the characteristics of buried depth big (it is 1000m that the Hubei cloud is answered the rock stratum buried depth).The underground rock salt bank construction of China difficulty is bigger by contrast, operation risk is higher.When China utilizes water dissolving technique to build energy underground storage in many interlayers rock salt stratum; Because of the feasible chamber cavity geometry that dissolves of the existence of interlayer is difficult to control; Add that the taste of domestic rock salt is lower, the Impurity Distribution inequality makes and the water-soluble inhomogeneous expansion of cavity geometry when making the chamber causes dissolving the cavity shape deformity.Design is made the rock salt, gypsum, saltcake, mud stone of chamber section etc. and is thin interbed and staggered frequent to be difficult to find thicker being fit to build the salt interval of groove, and it is difficult to cause the salt cave to build coelosis, and the shape of salt cave cavity is difficult to control.Particularly to the insoluble heavy parting of part; When cavity geometry expands to certain phase; The interlayer large tracts of land is unsettled collapsing suddenly of no sign to occur after bittern soaks certain hour, thereby generally can cause pounding of sleeve pipe curved or pound in disconnected, the chamber bittern and press unexpected increase to cause a series of secondary disasters.When water dissolving technique is made the chamber in China's many interlayers salt ore bearing strate; (the DDGS average content of domestic rock salt is generally less than 80% because of the rock salt grade is low; Mostly interlayer is indissoluble and insoluble matter) contain a lot of insoluble matters; In the rock salt with interlayer in not being dissolved in a large number and making that the overwhelming majority is deposited on cavity bottom in the process of chamber, show that according to the existing well-log information of making in the engineering of chamber the volume that insoluble matter soaks after expanded accounts for whole about 50% of the cavity volume of making in bittern; Cause and dissolve the cavity volume heavy losses, surpass 50% and the economy that produces indirectly damage is general.When discharging in the part insoluble matter sleeve pipe in addition, very easily cause sleeve pipe to stop up, promote bittern at the sleeve pipe intercrystalline, the chamber progress is made in final influence.
In sum, the existing water-soluble cavity method of making exists following not enough: one, cavity geometry is difficult to effectively control in good time; Two, under the situation of many interlayers, be difficult to guarantee the stability of cavity; Three, the insoluble matter deposition accounts for cavity volume about 50%, has a strong impact on the cavity utilization rate; Four, water-soluble method is made the chamber and is built very difficulty of groove in the high insolubles content rock salt.
Summary of the invention
To weak point of the prior art, the object of the present invention is to provide and a kind ofly improved the complicated rock salt well worker of cavity space utilization rate, the water-soluble associating make cavity method.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
Complicated rock salt well worker, the water-soluble associating make cavity method, comprise the steps:
1), in the addressing of rock salt bank, press regular hexagon and arrange the water-soluble drilling well of bank;
2), water-soluble drilling well drills the target halite layer;
3), at regular hexagon center arrangement well worker vertical shaft;
4), well worker shaft excavation to target halite layer bottom, the line gradient that makes well worker silo bottom and water-soluble borehole bottom is greater than 1%;
5), be communicated with the tunnel to water-soluble borehole bottom excavation at well worker silo bottom;
6), in water-soluble borehole bottom halite layer, adopt artificial cutting mode to build groove;
7) rock salt that, cuts down is transported to ground through being communicated with tunnel and vertical shaft;
8), build trough end after, the high pressure sealing valve is installed being communicated with tunnel vertical shaft end;
9), valve-off, adopt water-soluble method to continue to build and dissolve the chamber;
10), make in the process of chamber, open and be communicated with the tunnel sealed valve, will dissolve bottom, chamber insoluble matter and be disposed to silo bottom water-soluble;
11), adopt the mode of lifting or multistage extraction that insoluble matter is drained into the face of land;
12), dissolve the chamber build finish after, sealed-for-life is communicated with the tunnel.
The invention has the beneficial effects as follows: the present invention can solve in the high insolubles content rock salt water-soluble method and make the problem that the chamber is difficult to build groove, guarantees that China can use the addressing of rock salt bank; The present invention can improve the cavity available space more than 90% under identical geological conditions; A bite vertical shaft can use for 6 banks, and macroeconomic property of the present invention is higher than the simple water-soluble chamber method of making.
Description of drawings
Fig. 1 is complicated rock salt well worker, the water-soluble perspective view of making the chamber of uniting;
The sketch map that Fig. 2 distributes for vertical shaft;
Fig. 3 is shaft excavation, roadway arrangement and the structural representation of making the chamber well;
Fig. 4 builds the structural representation of groove for the hand excavation;
Fig. 5 is the water-soluble structural representation of making the chamber.
In the accompanying drawing: 1-vertical shaft; 2-tunnel; 3-sealed valve; 4-groove; 5-molten chamber; 6-lubricating pad layer; 7-protective casing; 8-intervalve; 9-central tube; 10-cap rock; 11-rock salt stratum.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done to describe in further detail.
Complicated rock salt well worker, the water-soluble associating make cavity method, this method comprises the steps:
1), in the addressing of rock salt bank, press regular hexagon and arrange the water-soluble drilling well of bank (as shown in Figure 1).
2), water-soluble drilling well drills target salt rock stratum.
3), at regular hexagon center arrangement well worker's vertical shaft (as shown in Figure 2).
4), well worker shaft excavation to target halite layer bottom, the line gradient of guaranteeing silo bottom and water-soluble borehole bottom is greater than 1%.
5), be communicated with tunnel (as shown in Figure 3) to water-soluble borehole bottom excavation at well worker silo bottom.
6), in water-soluble borehole bottom halite layer, adopt artificial cutting mode to build groove.
7) rock salt that, cuts down is transported to ground through being communicated with tunnel and vertical shaft.
8), build trough end after, high pressure sealing valve (as shown in Figure 4) is installed being communicated with tunnel vertical shaft end.
9), valve-off, adopt water-soluble method to continue to build and dissolve chamber (as shown in Figure 5).
10), make in the process of chamber, can open as the case may be and be communicated with the tunnel sealed valve, will dissolve bottom, chamber insoluble matter and be disposed to silo bottom water-soluble.
11), adopt the mode of lifting or multistage extraction that insoluble matter is drained into the face of land.
12), dissolve the chamber build finish after, sealed-for-life is communicated with the tunnel.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. complicated rock salt well worker, the water-soluble associating are made cavity method, it is characterized in that this method comprises the steps:
1), in the addressing of rock salt bank, press regular hexagon and arrange the water-soluble drilling well of bank;
2), water-soluble drilling well drills the target halite layer;
3), at regular hexagon center arrangement well worker vertical shaft;
4), well worker shaft excavation to target halite layer bottom, the line gradient that makes well worker silo bottom and water-soluble borehole bottom is greater than 1%;
5), be communicated with the tunnel to water-soluble borehole bottom excavation at well worker silo bottom;
6), in water-soluble borehole bottom halite layer, adopt artificial cutting mode to build groove;
7) rock salt that, cuts down is transported to ground through being communicated with tunnel and vertical shaft;
8), build trough end after, the high pressure sealing valve is installed being communicated with tunnel vertical shaft end;
9), valve-off, adopt water-soluble method to continue to build and dissolve the chamber;
10), make in the process of chamber, open and be communicated with the tunnel sealed valve, will dissolve bottom, chamber insoluble matter and be disposed to silo bottom water-soluble;
11), adopt the mode of lifting or multistage extraction that insoluble matter is drained into the face of land;
12), dissolve the chamber build finish after, sealed-for-life is communicated with the tunnel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210357318.6A CN102828778B (en) | 2012-09-24 | 2012-09-24 | Complex salt rock underground and water dissolution joint cavity construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210357318.6A CN102828778B (en) | 2012-09-24 | 2012-09-24 | Complex salt rock underground and water dissolution joint cavity construction method |
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| Publication Number | Publication Date |
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| CN102828778A true CN102828778A (en) | 2012-12-19 |
| CN102828778B CN102828778B (en) | 2014-11-05 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905844A (en) * | 2017-10-31 | 2018-04-13 | 中国科学院武汉岩土力学研究所 | The old chamber of salt mine adopts space gas injection row's halogen method entirely |
| CN108533319A (en) * | 2018-03-26 | 2018-09-14 | 中国石油天然气集团有限公司 | Salt hole air reserved storeroom single tube column makes cavity method |
| CN109488376A (en) * | 2018-10-25 | 2019-03-19 | 中盐金坛盐化有限责任公司 | Horizontal salt cave, method of construction and its application |
| CN110005468A (en) * | 2019-04-11 | 2019-07-12 | 中国科学院武汉岩土力学研究所 | Horizontal cavity salt hole air reserved storeroom and its method of construction |
| CN110219696A (en) * | 2019-07-08 | 2019-09-10 | 国家能源投资集团有限责任公司 | Groundwater reservoir and reconstruction method |
| CN111749733A (en) * | 2019-03-28 | 2020-10-09 | 中国石油天然气集团有限公司 | Method for rebuilding gas storage warehouse by communicating old cavity |
| CN113389596A (en) * | 2020-03-12 | 2021-09-14 | 中国石油天然气集团有限公司 | Salt layer storage cavity structure and salt layer reservoir building method |
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| WO1995010689A1 (en) * | 1993-10-13 | 1995-04-20 | Sandia National Laboratories | Horizontal natural gas storage caverns and methods for producing same |
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| CN1676880A (en) * | 2005-04-20 | 2005-10-05 | 太原理工大学 | Rock salt deposit horizontal chamber type oil-gas depot and its building method |
| CN101749004A (en) * | 2009-12-25 | 2010-06-23 | 中国科学院地质与地球物理研究所 | Control method of interlayer rock salt cavern building with water solution in underground oil and gas storage |
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| CN102587982A (en) * | 2012-03-12 | 2012-07-18 | 中国石油大学(华东) | Method for constructing underground salt cavern gas storage groups |
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2012
- 2012-09-24 CN CN201210357318.6A patent/CN102828778B/en not_active Expired - Fee Related
Patent Citations (7)
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| US3941422A (en) * | 1974-05-20 | 1976-03-02 | John Keller Henderson | Method of interconnecting wells for solution mining |
| WO1995010689A1 (en) * | 1993-10-13 | 1995-04-20 | Sandia National Laboratories | Horizontal natural gas storage caverns and methods for producing same |
| CN1241676A (en) * | 1999-05-15 | 2000-01-19 | 洪泽县化工(集团)总公司 | Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
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| US20110127825A1 (en) * | 2008-08-01 | 2011-06-02 | Solvay Chemicals, Inc. | Traveling undercut solution mining systems and methods |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905844A (en) * | 2017-10-31 | 2018-04-13 | 中国科学院武汉岩土力学研究所 | The old chamber of salt mine adopts space gas injection row's halogen method entirely |
| CN107905844B (en) * | 2017-10-31 | 2019-06-25 | 中国科学院武汉岩土力学研究所 | Halogen method is arranged in salt mine old chamber Quan Caidong space gas injection |
| CN108533319A (en) * | 2018-03-26 | 2018-09-14 | 中国石油天然气集团有限公司 | Salt hole air reserved storeroom single tube column makes cavity method |
| CN109488376A (en) * | 2018-10-25 | 2019-03-19 | 中盐金坛盐化有限责任公司 | Horizontal salt cave, method of construction and its application |
| CN111749733A (en) * | 2019-03-28 | 2020-10-09 | 中国石油天然气集团有限公司 | Method for rebuilding gas storage warehouse by communicating old cavity |
| CN110005468A (en) * | 2019-04-11 | 2019-07-12 | 中国科学院武汉岩土力学研究所 | Horizontal cavity salt hole air reserved storeroom and its method of construction |
| CN110005468B (en) * | 2019-04-11 | 2020-04-10 | 中国科学院武汉岩土力学研究所 | Horizontal cavity salt cavern gas storage and construction method thereof |
| CN110219696A (en) * | 2019-07-08 | 2019-09-10 | 国家能源投资集团有限责任公司 | Groundwater reservoir and reconstruction method |
| CN113389596A (en) * | 2020-03-12 | 2021-09-14 | 中国石油天然气集团有限公司 | Salt layer storage cavity structure and salt layer reservoir building method |
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| CN102828778B (en) | 2014-11-05 |
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