CN214532956U - Freezing combined pipe capable of avoiding thermal pipeline influence - Google Patents
Freezing combined pipe capable of avoiding thermal pipeline influence Download PDFInfo
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- CN214532956U CN214532956U CN202120559608.3U CN202120559608U CN214532956U CN 214532956 U CN214532956 U CN 214532956U CN 202120559608 U CN202120559608 U CN 202120559608U CN 214532956 U CN214532956 U CN 214532956U
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Abstract
The utility model relates to an artifical frozen technical field discloses a can avoid freezing combination pipe of heating power pipeline influence, including freezing the caking, the one end of freezing the caking is provided with many and freezes the pipe, and relative one end is provided with connecting portion with it, connecting portion are used for freezing the connecting portion cooperation of caking with another of relative setting to realize freezing the area extension of caking. The utility model discloses a freeze the simple structure of combination pipe, the practicality is strong and with low costs, is suitable for the popularization, has the significance using value.
Description
Technical Field
The utility model relates to an artifical frozen technical field, concretely relates to can avoid freezing combination pipe of heating power pipeline influence.
Background
The artificial freezing method is a foundation treatment method which utilizes an artificial refrigeration technology to freeze water in a stratum to form frozen soil, isolates the connection between underground water and underground engineering and further carries out underground construction under the protection of a frozen wall. The freezing method has the advantages of good anti-permeability, environmental protection, wide application range and the like, and is widely applied to water-rich soil layers and soil layers with poor engineering geological conditions. In the freezing method, the arrangement of the freezing pipes directly influences the formation of the freezing curtain, in the freezing process, when external heat sources such as a thermal pipeline and the like exist, the temperature of the freezing curtain is often reduced, the time for positive freezing is increased, the time for positive freezing is often reduced by arranging the freezing pipes in an increased mode, the cost is increased by excessively increasing the freezing pipes, and therefore, the improvement on the structure of the freezing pipes under the influence of the thermal pipeline is very practical.
Freezing pipes adopted in the existing artificial freezing method are basically all formed into freezing curtains by driving a plurality of freezing pipes, and freezing liquid flows inside the freezing pipes to form freezing curtains, so that the construction of subway communication channels is carried out, and because the influence of heat pipes enables the freezing pipes to reach the freezing construction conditions of the communication channels in order to improve the freezing effect, more freezing pipes are often required to be arranged, and meanwhile, the construction efficiency is low and the construction cost is high by constructing according to the traditional complex method (as many as dozens of freezing pipes, one freezing pipe is constructed), so that certain disadvantages exist:
the utility model discloses a be CN 202010961184.3's utility model patent discloses an artificial freeze thawing test device and method between underground including contact passageway, for traditional freezing method, the utility model discloses the pertinence that contains the artificial freeze thawing construction operating mode simulation between underground including contact passageway is strong, can obtain temperature field and the displacement field of stratum when the underground including contact passageway adopts artificial stratum freezing method construction among the model test, provides useful reference for practical engineering application. However, the patent does not address the practical problem of heat pipes, but merely provides assistance to the application of the freezing pipe in the construction process and work.
The utility model discloses a patent application number is CN 111173536A's utility model discloses a freezing construction method for tunnel contact passageway, this utility model compare with the freezing construction method of traditional tunnel contact passageway, through setting up reasonable freeze time to and adopt lower salt solution temperature, great salt solution flow, accelerate to freeze the speed with this, and lay the pressure release hole in proper position, reduced the influence of frost heaving to the tunnel, thereby make construction safety. However, although this patent has great advantages compared to the conventional freezing method, the construction cost is increased due to the complexity of the construction.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can avoid freezing combination pipe and construction method of heating power pipeline influence, it needs a root construction to have solved current freezing pipe, problem such as the efficiency of construction is low, engineering cost height.
The utility model discloses the following technical scheme of accessible realizes:
the utility model provides a can avoid freezing combination pipe of heating power pipeline influence, includes and freezes the piece, the one end of freezing the piece is provided with many and freezes the pipe, and the one end relative with it is provided with connecting portion, connecting portion are used for freezing the connecting portion cooperation of piece with another of relative setting to the area extension of piece is frozen in the realization.
Further, the freezing block is rectangular, the connecting portion is saw-toothed, and the number of the freezing pipes is two.
Furthermore, the freezing block, the freezing pipes and the connecting part are connected in a welding mode.
Furthermore, the freezing blocks are arranged right below the thermal pipeline, the two freezing combined pipes which are oppositely arranged are symmetrically arranged and are laid along the axial direction of the thermal pipeline, and the intersection point of the two freezing combined pipes is positioned right below the circle center of the thermal pipeline.
The utility model discloses profitable technological effect lies in:
(1) the connection parts of the freezing combined pipes are in sawtooth coupling connection, so that a freezing pipe block with a larger area can be formed in the middle of a subway communication channel, the freezing surface area is increased, the effective freezing area is larger, and the huge influence of the heat pipe on the formation of a freezing curtain in the middle area is pertinently avoided;
(2) the more reliable freezing curtain formed by freezing the combined pipes can effectively reduce the use of the freezing pipes, thereby reducing the construction cost of the subway communication channel;
(3) by the structural characteristics of the freezing combined pipes, the combined pipes are constructed one by one without the need of constructing the same as the traditional freezing pipes (2 freezing pipes are constructed simultaneously), so that the efficiency is higher, and the construction period is shortened to a certain extent;
the utility model discloses a freeze the simple structure of combination pipe, the practicality is strong and with low costs, is suitable for the popularization, has the significance using value.
Drawings
Fig. 1 is a schematic view of a matching structure of two freezing combination pipes according to the present invention;
fig. 2 is a schematic structural view of the freezing combined pipe of the present invention under the influence of a thermal pipeline, wherein, two subway tunnel segments are arranged;
wherein, the radial influence ranges of 1-freezing block, 2-freezing pipe, 3-connecting part, 4-subway tunnel pipe piece, 5-heating power pipeline and 6-heating power pipeline.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided in connection with the accompanying drawings.
As shown in figures 1 and 2, the utility model provides a can avoid freezing combination pipe of heating power pipeline influence, including freezing caking 1, be provided with many in the one end that freezes caking 1 and freeze pipe 2, the one end relative with it is provided with connecting portion 3, this connecting portion 3 be used for with relative setting another freeze the connecting portion 3 cooperation of caking 1 to the area extension of caking 1 is frozen in the realization. Therefore, the freezing block 1 is arranged at one end of the freezing pipe and can be positioned in an influence area of the thermal pipeline, so that the freezing area is increased, the effective freezing area is larger, the influence of the thermal pipeline on freezing construction can be effectively resisted, the freezing effect of a freezing wall near the thermal pipeline is greatly enhanced, the freezing system is locally reinforced, a mode of greatly increasing the freezing pipe is not needed, the engineering cost and steel resources such as the freezing pipe and the like are saved, meanwhile, two freezing combined pipes which are oppositely arranged can be connected by virtue of the connecting part, the construction complexity is further reduced, and the actual situation of freezing construction around the thermal pipeline is well matched.
Specifically, the freezing block 1 may be configured as a rectangular plane structure, the connecting portion 3 may be configured as a saw-tooth shape, a wave shape, a pulse shape, etc., and the freezing pipes 2 connected to the freezing block 1 may be configured as required, such as two or three, etc., and the freezing block, the freezing pipes and the connecting portion are all connected by welding. The freezing pipe adopts a low-carbon seamless steel pipe and a low-carbon welding rod for welding, and the welding quality is good.
Utilize the utility model discloses a can avoid freezing implementation method of combination pipe of heating power pipeline influence, specifically as follows:
firstly, measuring the position and the angle of a subway tunnel segment 4 to be broken, determining the opening position of a freezing hole, determining the length of a required freezing block within a radial influence range 6 of a thermal pipeline according to the position of the thermal pipeline 5, and further selecting the proper size of the freezing block;
carry out the measurement of position and angle to the subway tunnel section of jurisdiction 4 that needs to abolish before the trompil, guarantee that the position and the angle of trompil are accurate, wherein, trompil position error is not more than 100mm to should avoid section of jurisdiction seam, bolt, main muscle, freeze the biggest allowable deviation 150mm in hole, freeze the biggest allowable deviation 150mm in distance between the pore-forming orbit in hole and the design orbit promptly.
Normally, the predetermined position is set right below the thermal pipeline 5, all the freezing combination pipes are divided into two groups, the freezing blocks are symmetrically arranged, the freezing blocks are laid along the axial direction of the thermal pipeline 5, the intersection points corresponding to the two freezing combination pipes are both located right below the center of the thermal pipeline 5, and the length of the freezing block 1 required by the freezing block is calculated as follows:
the radial extent of influence 6 of the thermal line is noted as a circular area, corresponding to a radius r2As shown in fig. 2, the length L between the frozen block 1 of the freezing combination pipe on the side of the thermal power line and the intersection point in the circular area is calculated using the following equation,
wherein, T1Represents the temperature of the thermal line, deg.C; r represents the distance between the temperature measuring hole and the thermal pipeline at a certain depth, m; r is1Represents the internal diameter of the thermal line; t represents the temperature of the temperature measuring hole, DEG C; beta represents an included angle between the freezing combined pipe at the two sides of the thermal pipeline and the circle center of the thermal pipeline in the circular area; alpha denotes the angle between the freezing combined tubes on both sides of the thermal power line.
Secondly, continuously forming a plurality of freezing holes by using a drilling machine according to the forming position and the width of the selected and determined freezing block 1, and communicating the freezing holes to ensure that the freezing block can be placed in; generally, the width of the frozen block can be determined according to the actual situation of field construction.
Thirdly, determining the number of freezing combined pipes to be installed according to actual needs, installing the freezing combined pipes into the communicated freezing holes one by one along the axial direction of the thermal pipeline 5, and gradually growing the freezing pipes in a welding mode until the freezing block 1 is conveyed to a preset position; this number can be determined according to the length of laying and the width of the frozen mass 1 required.
And step four, repeating the step one to the step three, and finishing the installation of the freezing combined pipe of another subway tunnel segment 4 until the connecting parts of the freezing combined pipes corresponding to the two subway tunnel segments 4 can be matched together.
Thus, with the help of the utility model discloses a freeze the combination pipe and effectively freeze the area in the middle of the increase subway contact passageway by a wide margin, reduce the heat pipe line of the upper position in the contact passageway and to the serious influence of contact passageway middle zone, can effectively reduce the quantity of freezing the pipe simultaneously, still improve the efficiency of construction with convenient construction method, shortened construction period, reduced construction cost and engineering cost with still less freezing the pipe number, improved simultaneously and frozen the pipe to the regional within range effect of freezing of contact passageway.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made therein without departing from the principles and spirit of the invention, and therefore, the scope of the invention is defined by the appended claims.
Claims (4)
1. A freezing combination pipe capable of avoiding the influence of a thermal pipeline is characterized in that: including freezing the caking, the one end of freezing the caking is provided with many and freezes the pipe, and the one end relative with it is provided with connecting portion, connecting portion are used for freezing the connecting portion cooperation of caking with another of relative setting to realize freezing the area extension of caking.
2. A freeze-assembled tube to avoid thermal line effects as claimed in claim 1, wherein: the freezing block is rectangular, the connecting part is serrated, and the number of the freezing pipes is two.
3. A freeze-assembled tube to avoid thermal line effects as claimed in claim 2, wherein: the freezing block, the freezing pipes and the connecting part are all connected in a welding mode.
4. A freeze-assembled tube to avoid thermal line effects as claimed in claim 1, wherein: the freezing blocks are arranged right below the thermal pipeline, the two freezing combined pipes which are oppositely arranged are symmetrically arranged and are laid along the axial direction of the thermal pipeline, and the intersection point of the two freezing combined pipes is positioned right below the circle center of the thermal pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120559608.3U CN214532956U (en) | 2021-03-18 | 2021-03-18 | Freezing combined pipe capable of avoiding thermal pipeline influence |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120559608.3U CN214532956U (en) | 2021-03-18 | 2021-03-18 | Freezing combined pipe capable of avoiding thermal pipeline influence |
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| CN214532956U true CN214532956U (en) | 2021-10-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073981A (en) * | 2021-03-18 | 2021-07-06 | 上海工程技术大学 | Freezing combined pipe capable of avoiding thermal pipeline influence and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073981A (en) * | 2021-03-18 | 2021-07-06 | 上海工程技术大学 | Freezing combined pipe capable of avoiding thermal pipeline influence and construction method |
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