CN104060603A - Temperature controller device capable of measuring frost heaving pressure - Google Patents
Temperature controller device capable of measuring frost heaving pressure Download PDFInfo
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- CN104060603A CN104060603A CN201410332166.3A CN201410332166A CN104060603A CN 104060603 A CN104060603 A CN 104060603A CN 201410332166 A CN201410332166 A CN 201410332166A CN 104060603 A CN104060603 A CN 104060603A
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Abstract
The invention discloses a temperature controller device capable of measuring the frost heaving pressure. The temperature controller device capable of measuring the frost heaving pressure comprises an upper sealing plate, a pressure release pipe, a lower sealing plate, a base cone, a temperature control pipe, a liquid feeding pipe, a liquid returning pipe, a flow guiding pipe, a bypass pipe, a pressure gauge and a pressure release valve, wherein a liquid feeding pipe installation hole and a liquid returning pipe installation hole are formed in the upper sealing plate, steel scale type buckling pipes used for fixing the liquid feeding pipe and the liquid returning pipe are installed in the liquid feeding pipe installation hole and the liquid returning pipe installation hole respectively, the liquid feeding pipe penetrates through the steel scale type buckling pipe in the liquid feeding pipe installation hole, the upper sealing plate is connected with the upper port of the flow guiding pipe and the upper port of the temperature control pipe, the lower port of the flow guiding pipe and the upper port of the pressure release pipe are fixedly connected through connecting steel bars and are communicated through liquid, and the lower port of the pressure release pipe is fixedly connected with the side wall of the base cone. By the adoption of the temperature controller device capable of measuring the frost heaving pressure, the frost heaving pressure generated in a stratum when the stratum is frozen can be measured and released, temperature control and pressure release are conducted in a combined mode on a basis, and thus the temperature control function of temperature control holes can be brought into play more effectively.
Description
Technical field
The present invention relates to the thermostat device using in rock mass construction freezing method technology, particularly a kind of thermostat device that can measure frost-heaving force.
Background technology
People, for recovery of subterranean resources, construction underground power station, underground railway, trans-oceanic tunnel etc., just must understand physical features, the mechanical characteristic of deep ground, and adopt unconventional special construction method to excavate it.At present; in deep space excavation; the method the most often adopting is exactly artificial frozen construction technology; its core is exactly low temperature refrigerant to be sent in the soft stratum with certain water content and groundwater velocity with artificial cooling method; water in stratum and ground are around freezed; thereby form, intensity is high, bullet mould is large and impervious good frost wall, then under the protection of frost wall, carries out inner excavation and permanent support structure construction, does the processing of thawing after to be onstructed completing.
When using construction freezing method to remove to process the common law construction borehole wall, there will be the problem of borehole wall protection.For preventing that frost wall from developing into borehole wall place, uses temperature-control hole to control conventionally.But freezing technology faces the problem that some need to solve in the prior art, such as:
1), when control freezing wall develops, be badly in need of new technology and obtain frost-heave force situation and the size that frost wall produces, so that better control freezing cold distributes.
2), in shaft building process, due to problems such as engineering geology and hydrogeological understanding and experiences, the well accident of flooding causing need to be freezed to process.This type of engineering, when processing with construction freezing method, also needs to measure frost-heaving force, and protection has become the borehole wall to avoid second accident.
3), in having the frozen construction of specific (special) requirements, also need to carry out frost-heaving force measurement.
Yet, at present artificial frozen construction engineering, temperature is not controlled and is measured device or the equipment of frost-heaving force.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of thermostat device that can measure frost-heaving force, both can control frost wall development, can when developing, measure on control freezing wall frost-heaving force again, also there is pressure release effect simultaneously.
Technical scheme of the present invention is achieved in that a kind of thermostat device that can measure frost-heaving force, comprise upper sealing plate, relief tube, lower shrouding, base cone, temperature-controlled tube, feed pipe, liquid back pipe, mozzle, bypass pipe, pressure meter and relief valve, described upper sealing plate is provided with feed pipe installing hole and liquid back pipe installing hole; described feed pipe passes described feed pipe installing hole and extend in described temperature-controlled tube, and be tightly connected between described feed pipe outer wall and described feed pipe installing hole inwall, described upper sealing plate lower face is tightly connected with the upper port of described mozzle and the upper port of described temperature-controlled tube respectively, between the lower port sidewall of described mozzle and the upper port sidewall of described relief tube, be fixedly connected with, and the upper port fluid communication of the lower port of described mozzle and described relief tube, between the lower port of described relief tube and described temperature-controlled tube lower port, be tightly connected, in described base cone between described base cone cone point and described relief tube lower port, be installed with described lower shrouding, described lower shrouding is positioned at the lower port of described temperature-controlled tube and the below of described feed pipe liquid outlet, between the lower port of described temperature-controlled tube and described lower shrouding, be tightly connected, described liquid back pipe is through sealing between described liquid back pipe installing hole and described liquid back pipe outer wall and described liquid back pipe installing hole inwall, the lower port of described feed pipe and the described liquid back pipe annular space fluid communication respectively and between described temperature-controlled tube inwall and described feed pipe outer wall, after being tightly connected, described mozzle and described relief tube be enclosed within on described temperature-controlled tube, described temperature-controlled tube is enclosed within on described feed pipe, the internal diameter of described mozzle and the internal diameter of described relief tube are all greater than the external diameter of described temperature-controlled tube, and the internal diameter of described temperature-controlled tube is greater than the external diameter of described feed pipe, described relief tube comprises pressure release floral tube and lets out compaction tube, described in let out compaction tube upper end be fixedly connected with the lower end of described pressure release floral tube, on the sidewall of described pressure release floral tube, offer water inlet, described mozzle is provided with relief hole, one end of described bypass pipe is by the annular space fluid communication between described relief hole and described mozzle inwall and described temperature-controlled tube outer wall, described relief valve is installed on the other end of described bypass pipe, and described bypass pipe and described pressure meter are connected conducting by being located at the arm of described bypass pipe on the tube wall between described relief valve and described mozzle.
The above-mentioned thermostat device that can measure frost-heaving force, the lower port sidewall of described mozzle and the upper port sidewall of described pressure release floral tube weld together by connecting reinforcement, describedly let out the upper port sidewall of compaction tube and the lower port sidewall of described pressure release floral tube welds together by connecting reinforcement, described in let out compaction tube lower port sidewall be fixedly connected with the sidewall of described base cone.
The above-mentioned thermostat device that can measure frost-heaving force, described in let out the lower port sidewall of compaction tube and the sidewall edge, bottom surface of described base cone is fixedly connected with.
The above-mentioned thermostat device that can measure frost-heaving force, the outer wall of described pressure release floral tube is circumferentially wound with iron wire or is enclosed with screen cloth.
The above-mentioned thermostat device that can measure frost-heaving force, the outer wall of described pressure release floral tube is circumferentially enclosed with screen cloth, and the iron wire that described screen cloth is circumferentially wound around by the outer wall along described pressure release floral tube is fixed.
The above-mentioned thermostat device that can measure frost-heaving force, described feed pipe, described mozzle, described temperature-controlled tube and described relief tube be coaxially assembling all.
The above-mentioned thermostat device that can measure frost-heaving force, described feed pipe is polyethylene from high pressure process pipe, the first steel fish scale button pipe for fixing described feed pipe is installed on described feed pipe installing hole, and described feed pipe passes described feed pipe installing hole by the axial mesopore of described the first steel fish scale button pipe; The second steel fish scale button pipe for fixing described liquid back pipe is installed on described liquid back pipe installing hole, and described liquid back pipe passes described liquid back pipe installing hole by the axial mesopore of described the second steel fish scale button pipe.
The above-mentioned thermostat device that can measure frost-heaving force, described temperature-controlled tube, described mozzle, described in let out compaction tube, described pressure release floral tube, described bypass pipe and described arm and be steel pipe.
The above-mentioned thermostat device that can measure frost-heaving force, the tube wall of described feed pipe liquid feeding end is provided with gingival cyst of mucous gland in the newborn button; On the tube wall of described liquid back pipe outlet end, be also provided with gingival cyst of mucous gland in the newborn button.
The invention has the beneficial effects as follows:
(1) by being used in combination of feed pipe, temperature-controlled tube and liquid back pipe, can control frost wall development, as prevented, frost wall from developing into borehole wall place.
(2) utilize relief tube, mozzle, bypass pipe and pressure meter can realize in the evolution of control freezing wall and measure frost-heaving force.
(3), by relief valve is installed on bypass pipe, in the development of control freezing wall, also there is pressure release effect.
Accompanying drawing explanation
Fig. 1 is the vertical section structure schematic diagram of the present invention's thermostat that can survey frost-heaving force;
Fig. 2 is the surface structure schematic diagram of the present invention's thermostat that can survey frost-heaving force;
Fig. 3 is iron wire and the mesh structure schematic diagram on the pressure release floral tube excircle of the present invention's thermostat that can survey frost-heaving force;
Fig. 4 is the cross section structure schematic diagram of the present invention's thermostat that can survey frost-heaving force;
Fig. 5 is the local appearance structural representation of the present invention's thermostat that can survey frost-heaving force;
Fig. 6 is A portion structure for amplifying schematic diagram in Fig. 5.
In figure, 1-feed pipe, 2-pressure release floral tube, 3-lets out compaction tube, 4-liquid back pipe, 5-pressure meter, 6 relief valves, 7-mozzle, 8-iron wire and screen cloth, 9-connecting reinforcement, 10-temperature-controlled tube, 11-bypass pipe, 12-upper sealing plate, shrouding under 13-, 14-base cone, 15-relief hole, 16-water inlet, 171-the first steel fish scale button pipe, 172-the second steel fish scale button pipe.
The specific embodiment
For clearly demonstrating the scheme in the present invention, provide preferred embodiment below and be described with reference to the accompanying drawings.
As shown in Figures 1 to 6, a kind of thermostat device that can measure frost-heaving force of the present embodiment comprises upper sealing plate 12, relief tube, lower shrouding 13, base cone 14, temperature-controlled tube 10, feed pipe 1, liquid back pipe 4, mozzle 7, bypass pipe 11, pressure meter 5 and relief valve 6, and described upper sealing plate 12 is provided with feed pipe installing hole and liquid back pipe installing hole; described feed pipe 1 passes described feed pipe installing hole and extend in described temperature-controlled tube 10, and be tightly connected between described feed pipe 1 outer wall and described upper sealing plate 12, described upper sealing plate 12 lower faces are tightly connected with the upper port of described mozzle 7 and the upper port of described temperature-controlled tube 10 respectively, between the lower port sidewall of described mozzle 7 and the upper port sidewall of described relief tube, be fixedly connected with, and the upper port fluid communication of the lower port of described mozzle 7 and described relief tube, between the lower port of described relief tube and described temperature-controlled tube 10 lower port, be tightly connected, in described base cone 14 between described base cone 14 cone points and described relief tube lower port, be installed with described lower shrouding 13, described lower shrouding 13 is positioned at the lower port of described temperature-controlled tube 10 and the below of described feed pipe 1 liquid outlet, between the lower port of described temperature-controlled tube 10 and described lower shrouding 13, be tightly connected, the lower port of described feed pipe 1 and the described liquid back pipe 4 annular space fluid communication respectively and between described temperature-controlled tube 10 inwalls and described feed pipe 1 outer wall, after described mozzle 7 and described relief tube are tightly connected, be enclosed within on described temperature-controlled tube 10, described temperature-controlled tube 10 is enclosed within on described feed pipe 1, the internal diameter of described mozzle 7 and the internal diameter of described relief tube are all greater than the external diameter of described temperature-controlled tube 10, and the internal diameter of described temperature-controlled tube 10 is greater than the external diameter of described feed pipe 1, described relief tube comprises pressure release floral tube 2 and lets out compaction tube 3, described in let out compaction tube 3 upper end be fixedly connected with the lower end of described pressure release floral tube 2, on the sidewall of described pressure release floral tube 2, offer water inlet 16, described mozzle 7 is provided with relief hole 15, one end of described bypass pipe 11 is by the annular space fluid communication between described relief hole 15 and described mozzle 7 inwalls and described temperature-controlled tube 10 outer walls, described relief valve 6 is installed on the other end of described bypass pipe 11, and described bypass pipe 11 and described pressure meter 5 are connected conducting by being located at the arm of described bypass pipe 11 on the tube wall between described relief valve 6 and described mozzle 7.
The lower port sidewall of described mozzle 7 and the upper port sidewall of described pressure release floral tube 2 weld together by connecting reinforcement 9, describedly let out the upper port sidewall of compaction tube 3 and the lower port sidewall of described pressure release floral tube 2 welds together by connecting reinforcement 9, described in let out compaction tube 3 lower port sidewall be fixedly connected with the sidewall of described base cone 14.Describedly let out the lower port sidewall of compaction tube 3 and the sidewall edge, bottom surface of described base cone 14 is fixedly connected with.The outer wall of described pressure release floral tube 2 is circumferentially enclosed with screen cloth, and the iron wire that described screen cloth is circumferentially wound around by the outer wall along described pressure release floral tube 2 is fixed, can filter like this impurity such as landwaste in water, prevent from stopping up the annular space between described mozzle 7 inwalls and described temperature-controlled tube 10 outer walls and between described relief tube and described temperature-controlled tube 10 outer walls, and can prevent described bypass pipe 11 stop up cause can not pressure release maybe can not measure frost-heaving force.Described feed pipe 1, described mozzle 7, described temperature-controlled tube 10 and described relief tube be coaxially assembling all.Described feed pipe 1 is polyethylene from high pressure process pipe, the first steel fish scale button pipe 171 for fixing described feed pipe 1 is installed on described feed pipe installing hole, and described feed pipe 1 passes described feed pipe installing hole by the axial mesopore of described the first steel fish scale button pipe 171; The second steel fish scale button pipe 172 for fixing described liquid back pipe 4 is installed on described liquid back pipe installing hole, and described liquid back pipe 4 passes described liquid back pipe installing hole by the axial mesopore of described the second steel fish scale button pipe 172.Described temperature-controlled tube 10, described mozzle 7, described in let out compaction tube 3, described pressure release floral tube 2, described bypass pipe 11 and described arm and be steel pipe.The tube wall of described feed pipe 1 liquid feeding end is provided with gingival cyst of mucous gland in the newborn button; On the tube wall of described liquid back pipe 4 outlet ends, be also provided with gingival cyst of mucous gland in the newborn button, facilitate described feed pipe 1 to be connected with liquid feed device and described liquid back pipe 4 is connected with liquid withdrawal system.
In the present embodiment, as shown in Figure 4, low temperature refrigerant fluid enters temperature control hole (the axial mesopore of described feed pipe 1) by described feed pipe 1 and flows out from the outlet end (lower port) of described feed pipe 1, shunting after being subject to the stopping of described lower shrouding 13, the hollow sandwich (annular space) of low temperature refrigerant fluid between described feed pipe 1 outer wall and described temperature-controlled tube 10 inwalls upwards flows, and the top that flows to described temperature-controlled tube 10 flows out in low temperature refrigerant fluid recycling apparatus by described liquid back pipe 4 afterwards; Owing to directly flowing out by described liquid back pipe 4 after low temperature refrigerant fluid and stratum heat exchange in the hollow sandwich between described feed pipe 1 outer wall and described temperature-controlled tube 10 inwalls, in order to reduce the interchange of heat between the low temperature refrigerant fluid in low temperature refrigerant fluid and described feed pipe 1 in the hollow sandwich between described feed pipe 1 outer wall and described temperature-controlled tube 10 inwalls as far as possible, described feed pipe 1 is selected the poor polyethylene from high pressure process pipe of thermal conductivity.Low temperature refrigerant fluid flows into by feed pipe 1, along described temperature-controlled tube 10 inwalls to upper reaches, by temperature-controlled tube 10 and stratum, carries out interchange of heat.Like this, in control freezing construction, by described feed pipe 1 feed liquor and 10 times liquid of described temperature-controlled tube, thereby can play temperature control action.Described mozzle 7, the described frost heave water of letting out compaction tube 3 and described pressure release floral tube 2 outer periphery spaces can enter into by the water inlet 16 on described pressure release floral tube 2 sidewalls described mozzle 7 inwalls, the described annular space of letting out between compaction tube 3 inwalls and described pressure release floral tube 2 inwalls and described temperature-controlled tube 10 outer walls, along with entering of frost heave water, liquid level rises gradually, until enter in described bypass pipe 11 after reaching described relief hole 15, so just can measure frost-heaving force by described pressure meter 5, when frost-heaving force reaches setting limit value, can open described relief valve 6 and carry out pressure release.This invention can fully understand the frost-heaving force relation producing in stratum, utilizes relief valve 6 as pressure release passage, avoids causing the secondary of the borehole wall to destroy; Make freezing engineering construction have foundation and carry out, can effectively avoid the blindness in construction, be also beneficial to the temperature control function in performance temperature control hole simultaneously.
The present embodiment can be measured the thermostat device of frost-heaving force when frozen construction carries out temperature control, can measure in real time and record by the pressure of 5 pairs of Environmental Water of described pressure meter, and when water pressure reaches setting limit value, open described relief valve 6 and carry out pressure release and discharge water, thereby realize the pressure release to the frost-heaving force in frozen ground.This invention not only can be let out and be removed the frost-heaving force producing in stratum while freezing, can also improve the condition of work in temperature control hole, can more effectively bring into play the temperature control function in temperature control hole, make temperature control work and pressure release work have foundation to carrying out altogether, make engineering construction when controlling temperature and evidence-based during pressure, effectively avoid the blindness of construction.
The thermostat device that the present embodiment can be measured frost-heaving force can not only play temperature control action, can also fully understand in temperature controlled processes by freezing produced pressure size and changing, this makes have theoretical foundation and point to accurately for the work of temperature-control hole, can avoid causing second accident.
Above-described embodiment is only for the invention example is clearly described, and the not restriction to the invention specific embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any apparent variations of being extended out within the spirit and principles in the present invention or change are still among the protection domain in the invention claim.
Claims (9)
1. the thermostat device that can measure frost-heaving force, it is characterized in that, comprise upper sealing plate (12), relief tube, lower shrouding (13), base cone (14), temperature-controlled tube (10), feed pipe (1), liquid back pipe (4), mozzle (7), bypass pipe (11), pressure meter (5) and relief valve (6), described upper sealing plate (12) is provided with feed pipe installing hole and liquid back pipe installing hole; described feed pipe (1) passes described feed pipe installing hole and extend in described temperature-controlled tube (10), and seal between described feed pipe (1) outer wall and described feed pipe installing hole inwall, described upper sealing plate (12) lower face is tightly connected with the upper port of described mozzle (7) and the upper port of described temperature-controlled tube (10) respectively, between the lower port sidewall of described mozzle (7) and the upper port sidewall of described relief tube, be fixedly connected with, and the lower port of described mozzle (7) and the upper port fluid communication of described relief tube, between the lower port of described relief tube and described temperature-controlled tube (10) lower port, be tightly connected, the described base cone (14) being positioned between described base cone (14) cone point and described relief tube lower port is installed with described lower shrouding (13), described lower shrouding (13) is positioned at the lower port of described temperature-controlled tube (10) and the below of described feed pipe (1) liquid outlet, between the lower port of described temperature-controlled tube (10) and described lower shrouding (13), be tightly connected, described liquid back pipe (4) is through sealing between described liquid back pipe installing hole and described liquid back pipe (4) outer wall and described liquid back pipe installing hole inwall, the lower port of described feed pipe (1) and described liquid back pipe (4) the annular space fluid communication respectively and between described temperature-controlled tube (10) inwall and described feed pipe (1) outer wall, described mozzle (7) is enclosed within on described temperature-controlled tube (10) after being connected with described relief tube, described temperature-controlled tube (10) is enclosed within on described feed pipe (1), the internal diameter of described mozzle (7) and the internal diameter of described relief tube are all greater than the external diameter of described temperature-controlled tube (10), and the internal diameter of described temperature-controlled tube (10) is greater than the external diameter of described feed pipe (1), described relief tube comprises pressure release floral tube (2) and lets out compaction tube (3), described upper end of letting out compaction tube (3) is fixedly connected with the lower end of described pressure release floral tube (2), offers water inlet (16) on the sidewall of described pressure release floral tube (2), described mozzle (7) is provided with relief hole (15), one end of described bypass pipe (11) is by the annular space fluid communication between described relief hole (15) and described mozzle (7) inwall and described temperature-controlled tube (10) outer wall, described relief valve (6) is installed on the other end of described bypass pipe (11), and described bypass pipe (11) and described pressure meter (5) are connected conducting by the arm that is located at described bypass pipe (11) and is positioned on the tube wall between described relief valve (6) and described mozzle (7).
2. the thermostat device that can measure frost-heaving force according to claim 1, it is characterized in that, the upper port sidewall of the lower port sidewall of described mozzle (7) and described pressure release floral tube (2) welds together by connecting reinforcement (9), describedly let out the upper port sidewall of compaction tube (3) and the lower port sidewall of described pressure release floral tube (2) welds together by connecting reinforcement (9), described in let out compaction tube (3) lower port sidewall be fixedly connected with the sidewall of described base cone (14).
3. the thermostat device that can measure frost-heaving force according to claim 2, is characterized in that, described in let out the lower port sidewall of compaction tube (3) and the sidewall edge, bottom surface of described base cone (14) is fixedly connected with.
4. according to the arbitrary described thermostat device that can measure frost-heaving force of claim 1-3, it is characterized in that, the outer wall of described pressure release floral tube (2) is circumferentially wound with iron wire or is enclosed with screen cloth.
5. according to the arbitrary described thermostat device that can measure frost-heaving force of claim 1-3, it is characterized in that, the outer wall of described pressure release floral tube (2) is circumferentially enclosed with screen cloth, and the iron wire that described screen cloth is circumferentially wound around by the outer wall along described pressure release floral tube (2) is fixed.
6. according to the arbitrary described thermostat device that can measure frost-heaving force of claim 1-3, it is characterized in that, described feed pipe (1), described mozzle (7), described temperature-controlled tube (10) and described relief tube be coaxially assembling all.
7. according to the arbitrary described thermostat device that can measure frost-heaving force of claim 1-3, it is characterized in that, described feed pipe (1) is polyethylene from high pressure process pipe, the first steel fish scale button pipe (171) for fixing described feed pipe (1) is installed on described feed pipe installing hole, and described feed pipe (1) passes described feed pipe installing hole by the axial mesopore of described the first steel fish scale button pipe (171); The second steel fish scale button pipe (172) for fixing described liquid back pipe (4) is installed on described liquid back pipe installing hole, and described liquid back pipe (4) passes described liquid back pipe installing hole by the axial mesopore of described the second steel fish scale button pipe (172).
8. according to the arbitrary described thermostat device that can measure frost-heaving force of claim 1-3, it is characterized in that, described temperature-controlled tube (10), described mozzle (7), described in let out compaction tube (3), described pressure release floral tube (2), described bypass pipe (11) and described arm and be steel pipe.
9. according to the arbitrary described thermostat device that can measure frost-heaving force of claim 1-3, it is characterized in that, the tube wall of described feed pipe (1) liquid feeding end is provided with gingival cyst of mucous gland in the newborn button; On the tube wall of described liquid back pipe (4) outlet end, be also provided with gingival cyst of mucous gland in the newborn button.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410332166.3A CN104060603B (en) | 2014-07-11 | 2014-07-11 | A kind of thermostat device can measuring frost-heaving force |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410332166.3A CN104060603B (en) | 2014-07-11 | 2014-07-11 | A kind of thermostat device can measuring frost-heaving force |
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| CN104060603A true CN104060603A (en) | 2014-09-24 |
| CN104060603B CN104060603B (en) | 2016-03-16 |
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| CN107387089A (en) * | 2017-06-21 | 2017-11-24 | 中煤邯郸特殊凿井有限公司 | Prevent water freezing device in inclined shaft freezing osculum |
| CN110566210A (en) * | 2019-09-04 | 2019-12-13 | 北京中煤矿山工程有限公司 | Horizontal freezer and freezing method for segmented time-staggered space |
| CN111103027A (en) * | 2019-12-24 | 2020-05-05 | 北京中煤矿山工程有限公司 | Water level observation tube capable of realizing layered reporting of freezing wall intersection condition |
| CN114351528A (en) * | 2021-12-01 | 2022-04-15 | 北京中煤矿山工程有限公司 | High-pressure slurry jet hole cutting and frost heaving reduction construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107387089A (en) * | 2017-06-21 | 2017-11-24 | 中煤邯郸特殊凿井有限公司 | Prevent water freezing device in inclined shaft freezing osculum |
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| CN110566210B (en) * | 2019-09-04 | 2020-10-16 | 北京中煤矿山工程有限公司 | Horizontal freezer and freezing method for segmented time-staggered space |
| CN111103027A (en) * | 2019-12-24 | 2020-05-05 | 北京中煤矿山工程有限公司 | Water level observation tube capable of realizing layered reporting of freezing wall intersection condition |
| CN114351528A (en) * | 2021-12-01 | 2022-04-15 | 北京中煤矿山工程有限公司 | High-pressure slurry jet hole cutting and frost heaving reduction construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104060603B (en) | 2016-03-16 |
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