CN108767800B - Cable trench for cold areas and construction method thereof - Google Patents
Cable trench for cold areas and construction method thereof Download PDFInfo
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- CN108767800B CN108767800B CN201811015434.3A CN201811015434A CN108767800B CN 108767800 B CN108767800 B CN 108767800B CN 201811015434 A CN201811015434 A CN 201811015434A CN 108767800 B CN108767800 B CN 108767800B
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- 238000010276 construction Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 239000000945 filler Substances 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 26
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000004567 concrete Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims description 79
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000011381 foam concrete Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 16
- 239000010426 asphalt Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract description 15
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
Abstract
The invention provides a special cable trench for a cold region and a construction method thereof, comprising a trench, wherein cement concrete layers are arranged at the bottom and the side surfaces of the trench, a waterproof layer is arranged on the inner surface of the cement concrete layers, a cable penetrating pipe is arranged in the trench through a supporting mechanism at the bottom of the waterproof layer, heat-insulating filler is arranged in the trench at the outer side of the cable penetrating pipe, and a covering layer is arranged above the heat-insulating filler; and a heat preservation mechanism is arranged in the cable penetrating pipe. The cable trench structure provided by the invention can effectively prevent the cable from being subjected to low-temperature protection in cold areas, ensures that the insulating sleeve cannot be hardened and cracked due to low temperature, and reduces the cost of power transmission in the cold areas.
Description
Technical Field
The invention relates to the technical field of cable ditches, in particular to a cable ditch for a cold area and a construction method thereof.
Background
The cable trench is an underground pipeline for laying and replacing electric power or telecommunication cable facilities, is also an enclosure structure of the laid cable facilities, and has pipeline structure forms such as rectangle, circle, arch and the like. The cable is insulated by adopting the insulating sheath, but the insulating sheath can be hardened or cracked at a lower temperature in a cold area, so that the service life of the cable is greatly reduced, and the cable must be subjected to the anti-freezing work in the cold area.
The invention has the publication number 107705911A, relate to the cable field, it is a kind of low temperature resistant and anti-cracking power cable specifically, including the cable core, the said cable core is annealed copper conductor, said copper conductor outside crowd wrap up cross-linked polyethylene insulating layer, wrap up two-layer polyvinyl chloride tape inner liner in the outer layer of cross-linked polyethylene insulating layer, said polyvinyl chloride tape inner liner outside wrap up double-layer galvanized steel tape armor, wrap up two-layer non-woven fabrics buffer layer in the outer layer of galvanized steel tape armor, crowd wrap up polyethylene sheath on the non-woven fabrics buffer layer, use the double-layer galvanized steel tape armor to wrap up, can protect the radial mechanical layer of the cable; the buffer layer is clamped between the steel belt and the sheath, so that the sheath is not bonded with the steel belt, and the quick opening and the curled edge at the edge of the steel belt are not contacted with the polyethylene sheath, so that the polyethylene sheath can be replaced to receive partial impact force, the safety and the reliability are realized, and the service life of the cable is prolonged; the polyethylene sheath adopts a segmented cooling method, so that the shrinkage rate of the finished cable sheath can be reduced. The anti-cracking performance is improved by improving the cable insulation sleeve, but the performance of the sleeve is affected in a low-temperature environment.
At present, no effective measures are taken for preventing the underground cable from freezing.
Disclosure of Invention
In view of the above, the present invention provides a cable duct for a cold region and a construction method thereof, which can effectively protect a cable from low temperature in the cold region, and ensure that an insulation cover is not hardened and cracked due to excessively low temperature.
In order to solve the problems, the invention provides a special cable trench for cold areas, which comprises a trench, wherein cement concrete layers are arranged at the bottom and the side surfaces of the trench, a waterproof layer is arranged on the inner surface of the cement concrete layer, a cable penetrating pipe is arranged in the trench at the bottom of the waterproof layer through a supporting mechanism, heat-insulating filler is arranged in the trench at the outer side of the cable penetrating pipe, and a covering layer is arranged above the heat-insulating filler; the heat preservation mechanism comprises a cylindrical heating cavity arranged on the cable penetrating pipe, a CT energy taking mechanism and a heating mechanism are arranged in the heating cavity, a heat preservation filler corresponds to the heating cavity, a maintenance channel is arranged in the heating cavity, and a heat preservation cover plate is arranged at the upper end of the maintenance channel.
Furthermore, the heat-insulating filler adopts foam concrete, and the waterproof layer adopts an asphalt coating. Further, the upper surface of the heat-insulating filler is provided with a cover plate groove at the upper end of the overhaul channel, and the cover plate groove is matched with the heat-insulating cover plate.
Further, supporting mechanism is a plurality of and arranges and set up in the slot, supporting mechanism includes the rectangle base, the both ends of rectangle base upwards set up the stand, set up the horizontal pole between two stands, arrange on the horizontal pole and set up a plurality of arc layer board, set up through fixed establishment on the arc layer board the cable poling.
Further, the fixing mechanism comprises fixing holes arranged at two ends of the arc-shaped supporting plate and fixing steel wires with two ends connected with the fixing holes in a binding mode.
Further, the diameter of heating chamber is greater than the diameter of cable poling, the heating chamber with cable poling integrated into one piece, the upper portion of heating chamber sets up the manhole and corresponds the manhole sets up sealed apron, sealed apron is the cambered surface structure that agrees with the heating chamber, sealed apron's area is greater than the area of manhole, sealed apron's edge lower surface sets up the sealing strip, sealed apron with heating chamber bolted connection.
Further, the CT energy taking mechanism comprises a first C-shaped iron core and a second C-shaped iron core which are sleeved on a cable, the ends of the first C-shaped iron core and the second C-shaped iron core are connected, an enameled wire is wound on the first C-shaped iron core, and the enameled wire is connected with a storage battery arranged in a heating cavity through a rectifying and voltage stabilizing unit. Further, the heating mechanism comprises a heating resistance wire connected with the storage battery and a fan, wherein the heating resistance wire is arranged on the inner side surface of the heating cavity through a first cross arm, and the fan is arranged adjacent to the heating resistance wire through a second cross arm.
A construction method of a cable pit for a cold area, comprising the steps of: s1, excavating a groove, namely firstly, integrally excavating the groove, and pouring a cement concrete layer to support the bottom and the side wall of the groove; s2, performing waterproof treatment, and coating asphalt on the surface of the cement concrete layer after the cement concrete layer is solidified; s3, after the asphalt coating is dried, gradually erecting a supporting mechanism in the groove and starting to fix the cable through pipe; s4, dividing the cable through pipe into a plurality of sections to be erected in sequence, wherein each section comprises two supporting mechanisms and the cable through pipe which needs to be fixed on the two supporting mechanisms, and pouring foam concrete of the first section after the cable through pipe of the first section is fixed on the two supporting mechanisms of the first section; s5, after the construction of the first section is finished, installing two supporting mechanisms of the second section and cable penetrating pipes on the two supporting mechanisms, enabling the cable penetrating pipes on the first section and the second section to be in butt joint and communication, pouring foam concrete of the second section, and pouring the foam concrete in the whole groove according to the steps; s6, a space for overhauling the channel is reserved through a rectangular template in the pouring process, and a cover plate groove is manufactured at the top through the template; s7, after the integral construction in the cable trench is finished and the foam concrete is dried, one end of the cable is inserted into the cable through pipe, and then the cable is pushed so that the end part of the cable is drilled out from the other end of the cable through pipe, and the cable is laid; and S8, after the cable is connected with the equipment, covering the heat-insulating cover plate on the cover plate groove, and finally sealing soil.
The invention provides a cable trench for a cold area, which comprises a trench, wherein cement concrete layers are arranged at the bottom and the side surfaces of the trench, a waterproof layer is arranged on the inner surface of the cement concrete layers, a cable penetrating pipe is arranged in the trench through a supporting mechanism at the bottom of the waterproof layer, heat-insulating filler is arranged in the trench at the outer side of the cable penetrating pipe, and a covering layer is arranged above the heat-insulating filler; the heat preservation mechanism comprises a cylindrical heating cavity arranged on the cable penetrating pipe, a CT energy taking mechanism and a heating mechanism are arranged in the heating cavity, a heat preservation filler corresponds to the heating cavity, a maintenance channel is arranged in the heating cavity, and a heat preservation cover plate is arranged at the upper end of the maintenance channel.
The cement concrete layer plays a supporting role on the side wall of the groove, the waterproof layer prevents water in soil from corroding cables in the cable trench, the supporting mechanism sets the cable penetrating pipe in the groove, then the insulating filler is poured, the insulating filler is used for insulating the cables in the cable penetrating pipe, the soil covering layer is used for backfilling the cable trench, a certain insulating effect is added, and the damage to the cables by low temperature can be greatly reduced in the structure in cold areas. When ambient temperature is lower, set up heat preservation mechanism in the cable poling, heating chamber and cable poling integration set up, and CT that its inside set up gets can get the energy to the cable, then supplies heating mechanism work, produces heat in the cable poling, overhauls the equipment in the heating chamber for the convenience, and the maintenance passageway is reserved to the heat preservation filler, and sets up the heat preservation apron in the upper end of passageway, and earth gets into in the maintenance passageway and increase the heat preservation effect when avoiding sealing soil.
The heat insulation filler adopts foam concrete, the waterproof layer adopts asphalt coating, the foam concrete belongs to novel light heat insulation materials, the price is low, the heat insulation effect is good, the fluidity is strong, the pouring use is facilitated, the asphalt price is low, the corrosion resistance is realized, and the heat insulation filler is also suitable for the cable pit.
The upper surface of the heat-insulating filler is provided with a cover plate groove at the upper end of the overhaul channel, and the cover plate groove is matched with the heat-insulating cover plate. In order to avoid dislocation of the heat-insulating cover plate during soil sealing, a cover plate groove is formed, the open end of the cover plate groove is larger than the width of the overhaul channel, and a step-shaped structure is formed to fix the heat-insulating cover plate so as to avoid looseness of the heat-insulating cover plate.
The supporting mechanism is a plurality of and arrange and set up in the slot, supporting mechanism includes rectangular base, rectangular base's both ends upwards set up the stand, set up the horizontal pole between two stands, the horizontal pole is arranged and is set up a plurality of arc layer board, set up through fixed establishment on the arc layer board the cable poling. Rectangular base avoids supporting mechanism to empty, and two liang supporting mechanism cooperation is to cable poling fixed stay, and cable poling sets up on the arc layer board, and fixed establishment is fixed cable poling, poling displacement when avoiding pouring foam concrete.
The fixing mechanism comprises fixing holes arranged at two ends of the arc-shaped supporting plate and fixing steel wires with two ends connected with the fixing holes in a binding mode. The fixing mechanism is realized through fixed steel wire, and after the cable poling is placed on the arc layer board, the cable poling is fixed through the fixed steel wire both ends ligature in the fixed orifices and tighten up, realization.
The diameter of heating chamber is greater than the diameter of cable poling, the heating chamber with cable poling integrated into one piece, the upper portion of heating chamber sets up the manhole and corresponds the manhole sets up sealed apron, the manhole is the rectangle, sealed apron is the cambered surface structure that agrees with the heating chamber, sealed apron's area is greater than the area of manhole, sealed apron's edge lower surface sets up the sealing strip, sealed apron with heating chamber bolted connection. The heating cavity is used for setting up energy taking mechanism and heating mechanism, and sealed apron edge and heating cavity are at manhole edge position cooperation setting bolt hole, fix sealed apron through fixing bolt, and the sealing strip can adopt the rubber sealing strip, seals the gap of manhole and sealed apron.
The CT energy taking mechanism comprises a first C-shaped iron core and a second C-shaped iron core which are sleeved on a cable, wherein the ends of the first C-shaped iron core and the second C-shaped iron core are connected, an enameled wire is wound on the first C-shaped iron core, and the enameled wire is connected with a storage battery arranged in a heating cavity through a rectifying and voltage stabilizing unit. The second C-shaped iron core is in butt joint with the first C-shaped iron core and can be fixed through a fixing sleeve, rubber sleeves are adopted at two ends of the fixing sleeve, the ends of the two C-shaped iron cores are inserted into two ends of the fixing sleeve, the ends of the two C-shaped iron cores are in butt joint and fixed through tightening of the fixing sleeve, and the mechanism is quite common and not too much described. Because the alternating current passes through the cable, the enameled wire can generate current, the rectifying and voltage stabilizing unit adopts the structure designed in the conventional CT energy-taking equipment at present, and the rectifying and voltage stabilizing unit comprises a rectifying circuit, a filtering circuit, a voltage stabilizing circuit and the like, which are not excessively described in the conventional technology, the generated current is sent to a storage battery after voltage stabilizing and rectifying, the storage battery is used as a standby power supply, the volume of the storage battery is not too large, and only the electric energy generated in real time is stored and directly sent to a heating mechanism for use.
The heating mechanism comprises a heating resistance wire connected with the storage battery and a fan, wherein the heating resistance wire is arranged on the inner side surface of the heating cavity through a first cross arm, and the fan is arranged adjacent to the heating resistance wire through a second cross arm. The electric energy in the storage battery is supplied to the heating resistance wire and the fan to enable the heating resistance wire and the fan to work, the heating resistance wire generates heat, the fan enables air in the cable through pipe to circulate, and the heat is transferred to each space in the cable through pipe to achieve a heating function. The fan adopts small-size mini fan, like the external small fan of notebook radiating, and heating resistance wire adopts iron chromium aluminium heating wire, and its heating is cheap, because the heating chamber is inside narrow and small, heating resistance wire volume needs very little.
The cable trench structure provided by the invention can effectively prevent the cable from being subjected to low-temperature protection in cold areas, ensures that the insulating sleeve cannot be hardened and cracked due to low temperature, and reduces the cost of power transmission in the cold areas.
Drawings
FIG. 1 is a schematic view of the structure of a cable trough for a cold area according to the present invention;
FIG. 2 is a schematic view of the structure of the service aisle of the present invention;
fig. 3 is a schematic structural view of the heat preservation mechanism of the present invention.
Description of the embodiments
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3 of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
Example 1
The embodiment provides a special cable trench for a cold region, which comprises a trench 1, wherein cement concrete layers 2 are arranged at the bottom and the side surfaces of the trench 1, a waterproof layer 3 is arranged on the inner surface of the cement concrete layers 2, a cable penetrating pipe 5 is arranged in the trench 1 through a supporting mechanism at the bottom of the waterproof layer 3, a heat-insulating filler 4 is arranged in the trench 1 at the outer side of the cable penetrating pipe 5, and a covering layer is arranged above the heat-insulating filler 4; the heat preservation mechanism is arranged in the cable penetrating pipe 5 and comprises a cylindrical heating cavity 19 arranged on the cable penetrating pipe 5, a CT energy taking mechanism and a heating mechanism are arranged in the heating cavity 19, the heat preservation filler 4 corresponds to the heating cavity 19, an overhaul channel 15 is arranged in the heating cavity 19, and a heat preservation cover plate 13 is arranged at the upper end of the overhaul channel 15.
The heat-insulating filler 4 is made of foam concrete, and the waterproof layer 3 is made of asphalt coating.
The upper surface of the heat-insulating filler 4 is provided with a cover plate groove 14 at the upper end of the overhaul channel 15, and the cover plate groove 14 is matched with the heat-insulating cover plate 13.
The supporting mechanism is a plurality of and arrange and set up in slot 1, supporting mechanism includes rectangular base 12, rectangular base 12's both ends upwards set up stand 11, set up horizontal pole 10 between two stands 11, horizontal pole 10 arranges and sets up a plurality of arc layer board 8, set up through fixed establishment on the arc layer board 8 cable poling 5.
The fixing mechanism comprises fixing holes 9 arranged at two ends of the arc-shaped supporting plate 8 and fixing steel wires 7 with two ends connected with the fixing holes 9 in a binding mode.
Example two
It differs from embodiment one in that: the diameter of heating chamber 19 is greater than the diameter of cable poling 5, heating chamber 19 with cable poling 5 integrated into one piece, the upper portion of heating chamber 19 sets up manhole 17 and corresponds manhole 17 sets up sealed apron 16, sealed apron 16 is the cambered surface structure that agrees with heating chamber 19, the area of sealed apron 16 is greater than the area of manhole 17, the marginal lower surface of sealed apron 16 sets up sealing strip 18, sealed apron 16 with heating chamber 19 bolted connection.
The CT energy taking mechanism comprises a first C-shaped iron core 26 and a second C-shaped iron core 22 which are sleeved on a cable 23, wherein the ends of the first C-shaped iron core 26 and the second C-shaped iron core 22 are connected, an enameled wire 27 is wound on the first C-shaped iron core 26, and the enameled wire 27 is connected with a storage battery 29 arranged in a heating cavity 19 through a rectifying and voltage stabilizing unit 28.
The heating mechanism comprises a heating resistance wire 20 connected with the storage battery 29 through a wire and a fan 25, the heating resistance wire 20 is arranged on the inner side surface of the heating cavity 19 through a first cross arm 21, and the fan 25 is arranged adjacent to the heating resistance wire 20 through a second cross arm 24.
Example III
The embodiment provides a construction method of a cable pit for a cold area, which comprises the following steps:
s1, excavating a groove, namely firstly, integrally excavating the groove, and pouring a cement concrete layer to support the bottom and the side wall of the groove;
s2, performing waterproof treatment, and coating asphalt on the surface of the cement concrete layer after the cement concrete layer is solidified;
s3, after the asphalt coating is dried, gradually erecting a supporting mechanism in the groove and starting to fix the cable through pipe;
s4, dividing the cable through pipe into a plurality of sections to be erected in sequence, wherein each section comprises two supporting mechanisms and the cable through pipe which needs to be fixed on the two supporting mechanisms, and pouring foam concrete of the first section after the cable through pipe of the first section is fixed on the two supporting mechanisms of the first section;
s5, after the construction of the first section is finished, installing two supporting mechanisms of the second section and cable penetrating pipes on the two supporting mechanisms, enabling the cable penetrating pipes on the first section and the second section to be in butt joint and communication, pouring foam concrete of the second section, and pouring the foam concrete in the whole groove according to the steps;
s6, a space for overhauling the channel is reserved through a rectangular template in the pouring process, and a cover plate groove is manufactured at the top through the template;
s7, after the integral construction in the cable trench is finished and the foam concrete is dried, one end of the cable is inserted into the cable through pipe, and then the cable is pushed so that the end part of the cable is drilled out from the other end of the cable through pipe, and the cable is laid;
and S8, after the cable is connected with the equipment, covering the heat-insulating cover plate on the cover plate groove, and finally sealing soil.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (6)
1. A cable pit for use in cold areas, characterized in that:
the waterproof layer is arranged on the inner surface of the cement concrete layer, a cable penetrating pipe is arranged in the groove through a supporting mechanism at the bottom of the waterproof layer, heat-insulating filler is arranged in the groove at the outer side of the cable penetrating pipe, and a soil covering layer is arranged above the heat-insulating filler; the heat insulation mechanism comprises a cylindrical heating cavity arranged on the cable penetrating pipe, a CT energy taking mechanism and a heating mechanism are arranged in the heating cavity, a maintenance channel is arranged in the heat insulation filler corresponding to the heating cavity, and a heat insulation cover plate is arranged at the upper end of the maintenance channel; the heat-insulating filler adopts foam concrete, and the waterproof layer adopts an asphalt coating;
the diameter of the heating cavity is larger than that of the cable penetrating pipe, the heating cavity and the cable penetrating pipe are integrally formed, a manhole is arranged at the upper part of the heating cavity, a sealing cover plate is arranged corresponding to the manhole, the sealing cover plate is of a cambered surface structure matched with the heating cavity, the area of the sealing cover plate is larger than that of the manhole, a sealing strip is arranged on the lower surface of the edge of the sealing cover plate, and the sealing cover plate is connected with the heating cavity through bolts;
the CT energy taking mechanism comprises a first C-shaped iron core and a second C-shaped iron core which are sleeved on a cable, wherein the ends of the first C-shaped iron core and the second C-shaped iron core are connected, an enameled wire is wound on the first C-shaped iron core, and the enameled wire is connected with a storage battery arranged in a heating cavity through a rectifying and voltage stabilizing unit.
2. The cable pit for a cold area as set forth in claim 1, wherein: the upper surface of the heat-insulating filler is provided with a cover plate groove at the upper end of the overhaul channel, and the cover plate groove is matched with the heat-insulating cover plate.
3. The cable pit for a cold area as set forth in claim 1, wherein: the supporting mechanism is a plurality of and arrange and set up in the slot, supporting mechanism includes rectangular base, rectangular base's both ends upwards set up the stand, set up the horizontal pole between two stands, arrange on the horizontal pole and set up a plurality of arc layer board, set up through fixed establishment on the arc layer board the cable poling.
4. A cable pit for a cold area according to claim 3, wherein: the fixing mechanism comprises fixing holes arranged at two ends of the arc-shaped supporting plate and fixing steel wires with two ends connected with the fixing holes in a binding mode.
5. The cable pit for a cold area as set forth in claim 1, wherein: the heating mechanism comprises a heating resistance wire connected with the storage battery and a fan, wherein the heating resistance wire is arranged on the inner side surface of the heating cavity through a first cross arm, and the fan is arranged adjacent to the heating resistance wire through a second cross arm.
6. The construction method for a cable pit for a cold area according to any one of claims 1 to 5, wherein: the method comprises the following steps:
s1, excavating a groove, namely firstly, integrally excavating the groove, and pouring a cement concrete layer to support the bottom and the side wall of the groove;
s2, performing waterproof treatment, and coating asphalt on the surface of the cement concrete layer after the cement concrete layer is solidified;
s3, after the asphalt coating is dried, gradually erecting a supporting mechanism in the groove and starting to fix the cable through pipe;
s4, dividing the cable through pipe into a plurality of sections to be erected in sequence, wherein each section comprises two supporting mechanisms and the cable through pipe which needs to be fixed on the two supporting mechanisms, and pouring foam concrete of the first section after the cable through pipe of the first section is fixed on the two supporting mechanisms of the first section;
s5, after the construction of the first section is finished, installing two supporting mechanisms of the second section and cable penetrating pipes on the two supporting mechanisms, enabling the cable penetrating pipes on the first section and the second section to be in butt joint and communication, pouring foam concrete of the second section, and completing the pouring of the foam concrete in the whole groove according to the steps;
s6, a space for overhauling the channel is reserved through a rectangular template in the pouring process, and a cover plate groove is manufactured at the top through the template;
s7, after the integral construction in the cable trench is finished and the foam concrete is dried, one end of the cable is inserted into the cable through pipe, and then the cable is pushed so that the end part of the cable is drilled out from the other end of the cable through pipe, and the cable is laid;
and S8, after the cable is connected with the equipment, covering the heat-insulating cover plate on the cover plate groove, and finally sealing soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015434.3A CN108767800B (en) | 2018-08-31 | 2018-08-31 | Cable trench for cold areas and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015434.3A CN108767800B (en) | 2018-08-31 | 2018-08-31 | Cable trench for cold areas and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108767800A CN108767800A (en) | 2018-11-06 |
| CN108767800B true CN108767800B (en) | 2024-02-13 |
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| CN201811015434.3A Active CN108767800B (en) | 2018-08-31 | 2018-08-31 | Cable trench for cold areas and construction method thereof |
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| CN113236908A (en) * | 2021-06-17 | 2021-08-10 | 东方工建集团有限公司 | Anticorrosion construction method for natural gas transmission pipeline |
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| CN108767800A (en) | 2018-11-06 |
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