CN102278116A - Device and method for manufacturing underground frozen wall in cold areas in winter - Google Patents
Device and method for manufacturing underground frozen wall in cold areas in winter Download PDFInfo
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- CN102278116A CN102278116A CN201110105546XA CN201110105546A CN102278116A CN 102278116 A CN102278116 A CN 102278116A CN 201110105546X A CN201110105546X A CN 201110105546XA CN 201110105546 A CN201110105546 A CN 201110105546A CN 102278116 A CN102278116 A CN 102278116A
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Abstract
The invention relates to a device and method for manufacturing an underground frozen wall in cold areas in winter. The device is formed in such ways that: an outlet of a U-shaped pipe is connected with a water return radiator through an outlet sensor and a flowmeter, the water return radiator is connected with a water tank through a pipeline and a water tank inlet switch valve, the lateral face of the upper part of the water tank is provided with a water injection port, the water return radiator is connected with a water pump through a switch valve, a water tank water outlet pipeline and a filtering valve, the water tank is connected with the water tank water outlet pipeline through a water tank outlet switch valve, and the water pump is connected with an inlet of the U-shaped pipe through a water injection radiator, an air valve and an inlet sensor. Cold is obtained from the natural temperature outdoors in winter, the cold is conveyed into an underground frozen geologic body by taking a low-temperature glycol water solution as a circulating medium to further form a frozen wall instead of a liquid ammonia frozen geologic body; proved by tests, the temperature difference between the inlet and the outlet can reach 6 DEG C under the conditions that the outdoor temperature is -25 DEG C, and the flow rate is 18L/min; and the energy resources are saved, the engineering cost is reduced, and the benefits are increased.
Description
Technical field:
The present invention relates to a kind of underground cold-storage apparatus and cold-storage method, especially winter, cold district was with the cold device and method of sending into underground freezing plastid partly in winter.
Background technology:
In recent years, the making of the increasing underground freezing wall of requirement of engineering, freezing supporting is used in civil engineering, mining engineering usually.In the excavation construction of tunnel, vertical shaft or inclined shaft, it can play temporary lining and two kinds of effects of waterproof.Freezing supporting is applicable to that excavation is dark, the complicated underground construction of construction.Freezing supporting basic principle is exactly the stratum around the wall of freezing hole, and interstitial water is build-up ice.Increase by the freezing hole wall intensity that makes, become impervious layer.Hole wall intensity increase depends on cryogenic temperature.The first-phase paper of Shanxi water conservancy " the freezing support technology of underground construction ", Britain triumphant prestige island nineteen sixty has been excavated the circular deep foundation ditch of dark 40m, a diameter 40m, excavation is sand gravel, mud and the clay in safe scholar river entirely in the zone, has only adopted freezing supporting and does not adopt other supporting just to finish construction.When footpath, the big hole tunnel boring machine of Britain's Caro is repaired, adopt freezing support technology that on every side sand and gravel are freezed, although bear the high water head of 25m, repair is still unaffected.Shanxi architecture the 36th volume the 27th phase paper " application of freezing process in the water supply project of county town, Shenmu County " at county town, Shenmu County water supply project basic condition, has proposed employing freezing process water blockoff scheme, has solved vertical shaft and has passed through deep layer quicksand section construction difficult problem.Electrical network and clean energy resource the 24th volume the 4th phase paper " the water-conveyance tunnel construction shaft freezes back construction method research ", the construction of freezing process vertical shaft is a kind of trial of hydraulic tunnel construction shaft construction, the utilization success of freezing process in Shenmu County's water supply project water-conveyance tunnel project has certain experience to draw on and helps utilizing freezing process to solve under complicated geological construction problem and the frozen state vertical shaft construction later on.And the underground original position that will realize oil shale is exploited, and needs to make freezing wall especially.The paper " oil shale electrical heating original position production technique progress " of 2010 the 4th the 1st phases of volume of natural gas technical journal, the method that the freezing wall of present making is used is: after the conventional brill completion, every mouthful of well is linked to each other form closed circuit with ground catheter, and the high density polyethylene pipe that diameter is less is installed in the sleeve pipe of every mouthful of well,-43 ℃ ammonia spirits are injected well by polyethylene pipe, return ground by the polyethylene pipe outside, the freezing liquid that returns ground enters another mouthful well, circulates again.Along with the continuous circulation of freezing liquid, freezing zone constantly enlarges.At last, the freezing scope of per two freezing wells that link to each other achieves a butt joint, and forms freezing wall.What Ying He joint operation Shell Co. Ltd used is exactly this method, and required-43 ℃ ammonia spirit of the method needs artificial cooling to obtain, so need to consume a large amount of energy, causes freezing wall cost of manufacture very high.
Summary of the invention:
Purpose of the present invention is exactly at above-mentioned the deficiencies in the prior art, provides a kind of winter cold district to make underground freezing wall device;
Another object of the present invention provides a kind of method that winter, cold district was made underground freezing wall.
The objective of the invention is to be achieved through the following technical solutions:
Winter, cold district was made underground freezing wall device, be to connect backwater radiators 4 through outlet sensor 2, flow meter 3 by the outlet of U-shaped pipe 1, backwater radiator 4 is connected with water tank 8 with water tank inlet switch valve 5 by pipeline, the upper side of water tank 8 is provided with water filling port 9, backwater radiator 4 is connected with water pump 13 through switch valve 6, radiator drain line and strainer valve 11, water tank 8 is connected with the radiator drain line through water tank gate out switch valve 7, and water pump 13 connects and composes through water filling radiator 10, air valve 12 and inlet sensor 14 inlet with U-shaped pipe 1 by pipeline.
Outlet sensor 2 is connected recording instrument without paper respectively with inlet sensor 14, and the range of outlet sensor 2 and inlet sensor 14 is-50 ℃+50 ℃, and the maximum range of flow meter 3 is 30L/min.
Winter, cold district was made the preparation method of underground freezing wall, it is characterized in that, comprised following order and step:
A, according to the limit of mining of geologic information delineation oil shale, beat at the inward flange of oil shale recovery scope and to annotate cold well more than a bite, the spacing 2.5-3.5m of well and well, the diameter 130-300mm of well, well depth is beaten to by the base plate of producing oil shale according to geologic information;
B, U-shaped pipe 1 is lowered to annotates in the cold well, and simple landfill;
C, the outlet of U-shaped pipe 1 is connected backwater radiators 4 through outlet sensor 2, flow meter 3, backwater radiator 4 is connected with water tank 8 with water tank inlet switch valve 5 by pipeline, backwater radiator 4 is connected with water pump 13 through switch valve 6, radiator drain line and strainer valve 11, water tank 8 is connected with the radiator drain line through water tank gate out switch valve 7, water pump 13 is connected with the inlet of U-shaped pipe 1 through water filling radiator 10, air valve 12 and inlet sensor 14 by pipeline, and outlet sensor 2 is connected with recording instrument without paper respectively with inlet sensor 14;
D, ethylene glycol is mixed with concentration is 55% the aqueous solution;
E, open water tank inlet switch valve 5, switch valve 6, water tank gate out switch valve 7 and air valve 12, the glycol water that configures is injected in the water tank 8 by water filling port 9, and glycol water fills with pipeline and gas check valve 12 and water tank inlet switch valve 5 are closed in water tank 8 backs;
F, open water pump 13, glycol water enters U-shaped pipe 1 through water filling heat radiation 10 and inlet sensor 14, and the heat in shaft bottom is taken out of;
G, enter into through outlet sensor 2, flow meter 3 that 4 heat radiations of backwater radiator are laggard goes into water pump 13 again, so move in circles.
Beneficial effect: obtain cold the outdoor natural temperature from winter, send cold into underground freezing geologic body with the low temperature glycol water as circulatory mediator, and then form freezing wall, replaced the freezing underground geologic bodies of liquid ammonia, through overtesting, in outside temperature is-25 ℃, and flow is under the condition of 18L/min, and the temperature difference of access can reach 6 ℃.Save the energy, reduced engineering cost, improved benefit.
Description of drawings:
Accompanying drawing be winter cold district make underground freezing wall device structure chart
1U shape pipe, 2 outlet sensors, 3 flow meters, 4 backwater radiators, 5 water tank inlet switch valves, 6 switch valves, 7 water tank gate out switch valves, 8 water tanks, 9 water filling ports, 10 water filling radiators, 11 strainer valves, 12 air valves, 13 water pumps, 14 inlet sensors.
The specific embodiment:
Be described in further detail below in conjunction with drawings and Examples:
Winter, cold district was made underground freezing wall device, be to connect backwater radiators 4 through outlet sensor 2, flow meter 3 by the outlet of U-shaped pipe 1, backwater radiator 4 is connected with water tank 8 with water tank inlet switch valve 5 by pipeline, the upper side of water tank 8 is provided with water filling port 9, backwater radiator 4 is connected with water pump 13 through switch valve 6, radiator drain line and strainer valve 11, water tank 8 is connected with the radiator drain line through water tank gate out switch valve 7, and water pump 13 connects and composes through water filling radiator 10, air valve 12 and inlet sensor 14 inlet with U-shaped pipe 1 by pipeline.
Outlet sensor 2 is connected recording instrument without paper respectively with inlet sensor 14, and the range of outlet sensor 2 and inlet sensor 14 is-50 ℃+50 ℃, and the maximum range of flow meter 3 is 30L/min.
Winter, cold district was made the preparation method of underground freezing wall, it is characterized in that, comprised following order and step:
A, according to the limit of mining of geologic information delineation oil shale, beat at the inward flange of oil shale recovery scope and to annotate cold well more than a bite, the spacing 2.5-3.5m of well and well, the diameter 130-300mm of well, well depth is beaten to by the base plate of producing oil shale according to geologic information;
B, U-shaped pipe 1 is lowered to annotates in the cold well, U-shaped pipe 1 adopts diameter internal diameter 25-40mm usually, external diameter 32-45mm's, add the benzene plate in the therebetween of U-shaped pipe 1, and simple landfill;
C, the outlet of U-shaped pipe 1 is connected backwater radiators 4 through outlet sensor 2, flow meter 3, backwater radiator 4 is connected with water tank 8 with water tank inlet switch valve 5 by pipeline, backwater radiator 4 is connected with water pump 13 through switch valve 6, radiator drain line and strainer valve 11, water tank 8 is connected with the radiator drain line through water tank gate out switch valve 7, water pump 13 is connected with the inlet of U-shaped pipe 1 through water filling radiator 10, air valve 12 and inlet sensor 14 by pipeline, and outlet sensor 2 is connected with recording instrument without paper respectively with inlet sensor 14;
D, ethylene glycol is mixed with concentration is 55% the aqueous solution;
E, open water tank inlet switch valve 5, switch valve 6, water tank gate out switch valve 7 and air valve 12, the glycol water that configures is injected in the water tank 8 by water filling port 9, and glycol water fills with pipeline and gas check valve 12 and water tank inlet switch valve 5 are closed in water tank 8 backs;
F, open water pump 13, glycol water enters U-shaped pipe 1 through water filling heat radiation 10 and inlet sensor 14, and the heat in shaft bottom is taken out of;
G, enter into through outlet sensor 2, flow meter 3 that 4 heat radiations of backwater radiator are laggard goes into water pump 13 again, so move in circles.
Embodiment 1
Winter, cold district was made underground freezing wall device, be to connect backwater radiators 4 through outlet sensor 2, flow meter 3 by the outlet of U-shaped pipe 1, backwater radiator 4 is connected with water tank 8 with water tank inlet switch valve 5 by pipeline, the upper side of water tank 8 is provided with water filling port 9, backwater radiator 4 is connected with water pump 13 through switch valve 6, radiator drain line and strainer valve 11, water tank 8 is connected with the radiator drain line through water tank gate out switch valve 7, and water pump 13 connects and composes through water filling radiator 10, air valve 12 and inlet sensor 14 inlet with U-shaped pipe 1 by pipeline.
Outlet sensor 2 is connected recording instrument without paper respectively with inlet sensor 14, and the range of outlet sensor 2 and inlet sensor 14 is-50 ℃+50 ℃, and the maximum range of flow meter 3 is 30L/min.
Winter, cold district was made the preparation method of underground freezing wall, it is characterized in that, comprised following order and step:
A, according to the limit of mining of geologic information delineation oil shale, beat at the inward flange of oil shale recovery scope and to annotate cold well more than a bite, the spacing 2.5m of well and well, the diameter 160mm of well, well depth is beaten to by the base plate of producing oil shale according to geologic information;
B, U-shaped pipe 1 is lowered to annotates in the cold well, the U-shaped pipe adopts diameter internal diameter 25mm, adds the benzene plate in the therebetween of U-shaped pipe 1, and simple landfill;
C, the outlet of U-shaped pipe 1 is connected backwater radiators 4 through outlet sensor 2, flow meter 3, backwater radiator 4 is connected with water tank 8 with water tank inlet switch valve 5 by pipeline, backwater radiator 4 is connected with water pump 13 through switch valve 6, radiator drain line and strainer valve 11, water tank 8 is connected with the radiator drain line through water tank gate out switch valve 7, water pump 13 is connected with the inlet of U-shaped pipe 1 through water filling radiator 10, air valve 12 and inlet sensor 14 by pipeline, and outlet sensor 2 is connected with recording instrument without paper respectively with inlet sensor 14;
D, ethylene glycol is mixed with concentration is 55% the aqueous solution;
E, open water tank inlet switch valve 5, switch valve 6, water tank gate out switch valve 7 and air valve 12, the glycol water that configures is injected in the water tank 8 by water filling port 9, and glycol water fills with pipeline and gas check valve 12 and water tank inlet switch valve 5 are closed in water tank 8 backs;
F, open water pump 13, glycol water enters U-shaped pipe 1 through water filling heat radiation 10 and inlet sensor 14, and the heat in shaft bottom is taken out of;
G, enter into through outlet sensor 2, flow meter 3 that 4 heat radiations of backwater radiator are laggard goes into water pump 13 again, so move in circles.
Embodiment 2
Winter, cold district was made underground freezing wall device, be to connect backwater radiators 4 through outlet sensor 2, flow meter 3 by the outlet of U-shaped pipe 1, backwater radiator 4 is connected with water tank 8 with water tank inlet switch valve 5 by pipeline, the upper side of water tank 8 is provided with water filling port 9, backwater radiator 4 is connected with water pump 13 through switch valve 6, radiator drain line and strainer valve 11, water tank 8 is connected with the radiator drain line through water tank gate out switch valve 7, and water pump 13 connects and composes through water filling radiator 10, air valve 12 and inlet sensor 14 inlet with U-shaped pipe 1 by pipeline.
Outlet sensor 2 is connected recording instrument without paper respectively with inlet sensor 14, and the range of outlet sensor 2 and inlet sensor 14 is-50 ℃+50 ℃, and the maximum range of flow meter 3 is 30L/min.
Winter, cold district was made the preparation method of underground freezing wall, it is characterized in that, comprised following order and step:
A, according to the limit of mining of geologic information delineation oil shale, beat at the inward flange of oil shale recovery scope and to annotate cold well more than a bite, the spacing 3.5m of well and well, the diameter 300mm of well, well depth is beaten to by the base plate of producing oil shale according to geologic information;
B, U-shaped pipe 1 is lowered to annotates in the cold well, U-shaped pipe 1 adopts diameter internal diameter 40mm, adds the benzene plate in the therebetween of U-shaped pipe 1, and simple landfill;
C, the outlet of U-shaped pipe 1 is connected backwater radiators 4 through outlet sensor 2, flow meter 3, backwater radiator 4 is connected with water tank 8 with water tank inlet switch valve 5 by pipeline, backwater radiator 4 is connected with water pump 13 through switch valve 6, radiator drain line and strainer valve 11, water tank 8 is connected with the radiator drain line through water tank gate out switch valve 7, water pump 13 is connected with the inlet of U-shaped pipe 1 through water filling radiator 10, air valve 12 and inlet sensor 14 by pipeline, and outlet sensor 2 is connected with recording instrument without paper respectively with inlet sensor 14;
D, ethylene glycol is mixed with concentration is 55% the aqueous solution;
E, open water tank inlet switch valve 5, switch valve 6, water tank gate out switch valve 7 and air valve 12, the glycol water that configures is injected in the water tank 8 by water filling port 9, and glycol water fills with pipeline and gas check valve 12 and water tank inlet switch valve 5 are closed in water tank 8 backs;
F, open water pump 13, glycol water enters U-shaped pipe 1 through water filling heat radiation 10 and inlet sensor 14, and the heat in shaft bottom is taken out of;
G, enter into through outlet sensor 2, flow meter 3 that 4 heat radiations of backwater radiator are laggard goes into water pump 13 again, so move in circles.
Claims (3)
- One kind winter cold district make underground freezing wall device, it is characterized in that, be through outlet sensor (2) by the outlet of U-shaped pipe (1), flow meter (3) connects backwater radiator (4), backwater radiator (4) is connected with water tank (8) with water tank inlet switch valve (5) by pipeline, the upper side of water tank (8) is provided with water filling port (9), backwater radiator (4) is through switch valve (6), the radiator drain line is connected with water pump (13) with strainer valve (11), water tank (8) is connected with the radiator drain line through water tank gate out switch valve (7), water pump (13) by pipeline through water filling radiator (10), air valve (12) and inlet sensor (14) connect and compose with the inlet of U-shaped pipe (1).
- 2. make underground freezing wall device according to claim 1 cold district in described winter, it is characterized in that, outlet sensor (2) is connected recording instrument without paper respectively with inlet sensor (14), the range of outlet sensor (2) and inlet sensor (14) is-50 ℃+50 ℃, and the maximum range of flow meter (3) is 30L/min.
- 3. according to claim 1 method that described winter, cold district was made underground freezing wall, it is characterized in that, comprise following order and step:A, according to the limit of mining of geologic information delineation oil shale, beat at the inward flange of oil shale recovery scope and to annotate cold well more than a bite, the spacing 2.5-3.5m of well and well, the diameter 130-300mm of well, well depth is beaten to by the base plate of producing oil shale according to geologic information;B, U-shaped pipe (1) is lowered to annotates in the cold well;C, with the outlet of U-shaped pipe (1) through outlet sensor (2), flow meter (3) connects backwater radiator (4), backwater radiator (4) is connected with water tank (8) with water tank inlet switch valve (5) by pipeline, backwater radiator (4) is through switch valve (6), the radiator drain line is connected with water pump (13) with strainer valve (11), water tank (8) is connected with the radiator drain line through water tank gate out switch valve (7), water pump (13) by pipeline through water filling radiator (10), air valve (12) is connected with the inlet of U-shaped pipe (1) with inlet sensor (14), and outlet sensor (2) is connected with recording instrument without paper respectively with inlet sensor (14);D, ethylene glycol is mixed with concentration is 55% the aqueous solution;E, open water tank inlet switch valve (5), switch valve (6), water tank gate out switch valve (7) and air valve (12), the glycol water that configures is injected in the water tank (8) by water filling port (9), and glycol water fills with pipeline and gas check valve (12) and water tank inlet switch valve (5) are closed in water tank (8) back;F, open water pump (13), glycol water enters U-shaped pipe (1) through the water filling heat radiation (10) and the sensor (14) that enters the mouth, and the heat in shaft bottom is taken out of;G, enter into through outlet sensor (2), flow meter (3) that backwater radiator (4) heat radiation is laggard goes into water pump (13) again, so move in circles.
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| CN 201110105546 CN102278116B (en) | 2011-04-27 | 2011-04-27 | Device and method for manufacturing underground frozen wall in cold areas in winter |
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| CN 201110105546 CN102278116B (en) | 2011-04-27 | 2011-04-27 | Device and method for manufacturing underground frozen wall in cold areas in winter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587529A (en) * | 2017-09-13 | 2018-01-16 | 吉林大学 | Gas-water pressure balanced type underground anti-seepage sealing technique and equipment used |
| CN108442416A (en) * | 2018-06-20 | 2018-08-24 | 北京城建集团有限责任公司 | A kind of pilot tunnel upright side walls level that extends out being used for 8 pilot tunnel PBA engineering methods makes bottom basin shape and freezes sealing engineering method |
| CN108457307A (en) * | 2018-06-20 | 2018-08-28 | 北京城建集团有限责任公司 | A kind of leading pilot tunnel upright side walls level being used for 4/6/8 pilot tunnel PBA engineering methods makes bottom basin shape and freezes sealing engineering method |
| CN108457306A (en) * | 2018-06-20 | 2018-08-28 | 北京城建集团有限责任公司 | A kind of pile pipe collaboration upright side walls level being used for 4/6 pilot tunnel PBA engineering methods makes bottom basin shape and freezes sealing engineering method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3943722A (en) * | 1970-12-31 | 1976-03-16 | Union Carbide Canada Limited | Ground freezing method |
| CN1270271A (en) * | 2000-04-11 | 2000-10-18 | 山东科技大学防水建材研究所 | Anti-leakage compound wall of freeze well and its construction method |
| CN1483902A (en) * | 2003-05-29 | 2004-03-24 | 中国矿业大学 | Method of distributing freezers for speeding up freezing soil and rock in local area |
| US20040168460A1 (en) * | 2003-02-27 | 2004-09-02 | Layne Christensen Company | Method and apparatus for artificial ground freezing |
| CN101694159A (en) * | 2009-10-22 | 2010-04-14 | 中煤第一建设公司第四十九工程处 | Technology for rapidly constructing air shaft under chill condition and process for sinking vertical shaft pit shaft |
-
2011
- 2011-04-27 CN CN 201110105546 patent/CN102278116B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3943722A (en) * | 1970-12-31 | 1976-03-16 | Union Carbide Canada Limited | Ground freezing method |
| CN1270271A (en) * | 2000-04-11 | 2000-10-18 | 山东科技大学防水建材研究所 | Anti-leakage compound wall of freeze well and its construction method |
| US20040168460A1 (en) * | 2003-02-27 | 2004-09-02 | Layne Christensen Company | Method and apparatus for artificial ground freezing |
| CN1483902A (en) * | 2003-05-29 | 2004-03-24 | 中国矿业大学 | Method of distributing freezers for speeding up freezing soil and rock in local area |
| CN101694159A (en) * | 2009-10-22 | 2010-04-14 | 中煤第一建设公司第四十九工程处 | Technology for rapidly constructing air shaft under chill condition and process for sinking vertical shaft pit shaft |
Non-Patent Citations (1)
| Title |
|---|
| 尚小军: "冻结法在神木县城供水工程中的应用", 《山西建筑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587529A (en) * | 2017-09-13 | 2018-01-16 | 吉林大学 | Gas-water pressure balanced type underground anti-seepage sealing technique and equipment used |
| CN107587529B (en) * | 2017-09-13 | 2019-04-30 | 吉林大学 | Gas-water pressure balanced type underground anti-seepage sealing technique and equipment used |
| CN108442416A (en) * | 2018-06-20 | 2018-08-24 | 北京城建集团有限责任公司 | A kind of pilot tunnel upright side walls level that extends out being used for 8 pilot tunnel PBA engineering methods makes bottom basin shape and freezes sealing engineering method |
| CN108457307A (en) * | 2018-06-20 | 2018-08-28 | 北京城建集团有限责任公司 | A kind of leading pilot tunnel upright side walls level being used for 4/6/8 pilot tunnel PBA engineering methods makes bottom basin shape and freezes sealing engineering method |
| CN108457306A (en) * | 2018-06-20 | 2018-08-28 | 北京城建集团有限责任公司 | A kind of pile pipe collaboration upright side walls level being used for 4/6 pilot tunnel PBA engineering methods makes bottom basin shape and freezes sealing engineering method |
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