CN112290500B - Water and electricity engineering high tension cable outlet hole export section arrangement structure - Google Patents
Water and electricity engineering high tension cable outlet hole export section arrangement structure Download PDFInfo
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- CN112290500B CN112290500B CN202010944368.9A CN202010944368A CN112290500B CN 112290500 B CN112290500 B CN 112290500B CN 202010944368 A CN202010944368 A CN 202010944368A CN 112290500 B CN112290500 B CN 112290500B
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- 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
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/202—Cable lay-outs
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The invention discloses a hydropower engineering high-voltage cable outlet hole outlet section arrangement structure, which comprises an outlet hole outlet section connected with a main transformer hole, wherein the outlet hole outlet section is connected with a GIS building through an outlet connection section with a certain length; the outlet section of the outlet hole comprises an upper layer space and a lower layer space which are separated by a concrete structure; the upper space comprises a fire-proof partition wall arranged along the extension direction of the wire outlet hole, and an air exhaust and smoke exhaust channel and an overhaul and inspection channel which are respectively arranged at the left side and the right side of the fire-proof partition wall, and a medium-low voltage cable trench is arranged in the overhaul and inspection channel; the lower layer space is a high-voltage cable outlet channel which is arranged in a through length mode along the extension direction of the outlet hole; the outlet connecting section comprises a cable gallery connected with the high-voltage cable outlet channel and an open cable trench arranged above the cable gallery and connected with the medium-low voltage cable trench. The invention reduces the amount of engineering for excavating the stone square holes and the structural concrete, saves the engineering investment and reduces the secondary disturbance range to the side slope of the switch station.
Description
Technical Field
The invention relates to the field of hydroelectric engineering, in particular to an outlet section arrangement structure of a high-voltage cable outlet hole in hydroelectric engineering.
Background
In hydraulic and hydroelectric engineering, due to the influences of factors such as topographic conditions and unit suction height, a group power generation mode of underground plant caverns is mostly adopted, and the group power generation mode of the underground plant caverns faces the layout problem of a wire outlet system, so that the wire outlet system is usually arranged in a layout mode that a wire outlet hole is directly led out from a main transformer hole, or a wire outlet shaft, or the wire outlet shaft is combined with the wire outlet hole, and the like. The outlet hole is an outlet channel for connecting the underground main transformer hole and the ground switch station, and the following three functions are required to be simultaneously met: high-voltage cable outgoing lines, medium-and low-voltage cable outgoing lines, air exhaust and smoke exhaust, and overhaul and inspection channels. In order to meet the requirements of air exhaust and smoke exhaust, an air exhaust and smoke exhaust room is required to be arranged outside the hole of the outlet tunnel, and in order to reduce the plane land acquisition size and the side slope excavation range of the ground switch station, secondary excavation must be carried out on the side slope of the switch station.
At present, the outlet of the outlet hole of the hydroelectric engineering mostly adopts an upper layer, a middle layer and a lower layer which are arranged, and the outlet hole is sequentially provided with an exhaust smoke channel, a middle-low voltage cable, an overhaul and inspection channel and a high-voltage cable channel from top to bottom, and a stair section is required to be arranged to connect the outlet section and the internal outlet hole section, so that the three-layer structure design and the construction difficulty are complex. On the other hand, the conventional design still adopts the buried cable gallery of upper and lower two-layer to connect outlet opening and GIS building, has increased the structural concrete engineering volume.
Based on the situation, the invention provides an outlet section arrangement structure of a high-voltage cable outlet hole in hydroelectric engineering, which can effectively solve the problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an outlet section arrangement structure of a high-voltage cable outlet hole in hydropower engineering. The cable arrangement structure is reasonable in design and convenient to construct, can arrange the outgoing cables quickly, reduces the structural design and construction difficulty, reduces the engineering quantity of stone excavation and structural concrete and saves the engineering investment by integrating the engineering of medium and low voltage cable ditches, overhauling, patrolling, exhausting and exhausting smoke and the like under the condition of realizing the function invariance of high voltage cable outgoing, medium and low voltage cable outgoing, exhausting and exhausting smoke, overhauling and patrolling channels and the like.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a hydropower engineering high-voltage cable outlet hole outlet section arrangement structure, which comprises an outlet hole outlet section connected with a main transformer hole, wherein the outlet hole outlet section is connected with a GIS building through an outlet connection section with a certain length;
the outlet section of the outlet hole comprises an upper layer space and a lower layer space which are separated by a concrete structure; the upper space comprises a fire partition arranged along the extension direction of the wire outlet hole, and an air exhaust and smoke exhaust channel and an overhauling and patrolling channel which are respectively arranged at the left side and the right side of the fire partition, and a medium-low voltage cable trench is arranged in the overhauling and patrolling channel; the lower layer space is a high-voltage cable outlet channel which is arranged in a through length mode along the extension direction of the outlet hole;
the outlet connecting section comprises a cable gallery connected with the high-voltage cable outlet channel and an open cable trench arranged above the cable gallery and connected with the medium-low voltage cable trench.
As a preferred technical scheme of the invention, an air exhaust and smoke exhaust room is arranged above one end of the high-voltage cable outlet channel positioned at the cave mouth, and the air exhaust and smoke exhaust room is arranged close to the medium-low voltage cable trench.
As a preferred technical scheme of the invention, drainage ditches are arranged in the outlet section of the outlet hole and the structure of the outlet connecting section and are used for guiding and draining water seepage of surrounding rocks to a drainage system outside the hole.
As a preferred technical scheme of the invention, a permeable pipe is arranged between the concrete structure at the outlet section of the outlet hole and the surrounding rock, and the water permeating from the surrounding rock enters the drainage ditch through the permeable pipe at the periphery of the concrete structure.
As a preferred technical scheme of the invention, a structural seam is arranged between the outlet section of the outlet hole and the outlet connecting section, and a water-stopping copper sheet is arranged in the seam.
As a preferred technical scheme of the invention, the outlet section of the wire outlet hole is of a straight wall circular arch structure with an upper layer structure and a lower layer structure.
As a preferred technical scheme of the invention, the excavation width of the upper layer space of the outlet section of the outlet tunnel is larger than that of the lower layer space, and the cross section of the outlet tunnel is in a 'big-end-up' type.
As a preferred technical solution of the present invention, the bottom surface elevations of the open cable trench are respectively lower than the bottom surface elevations of the medium-and low-voltage cable trenches.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1) compared with the traditional outlet section which adopts an arrangement mode of an upper layer, a middle layer and a lower layer, the invention integrates the exhaust and smoke exhaust channel, the overhaul and inspection channel and the medium and low voltage cable trench in the upper layer and the middle layer into a one-layer structure, optimizes the function repetition space in the original upper layer and the middle layer, greatly reduces the excavation work amount of the outlet section of the outlet hole, simultaneously correspondingly reduces the pouring work amount of the concrete structure, and effectively saves the investment and the construction period. In addition, when the geological conditions of the side slope are complex, particularly when the rock-soil mass covered on the hole section of the wire-outgoing hole is thin, great difficulty is brought to the side slope excavation, the transverse cross section area of the double-layer wire-outgoing hole structure is greatly reduced, and the phenomena that the side slope collapses, holes cannot be formed, the supporting is difficult and the like are avoided to a great extent.
2) The overhauling and patrolling channel, the medium and low voltage cable trench and the air exhaust and smoke exhaust channel in the upper layer space are arranged side by side, and an up-down stair is not required to be arranged at the connecting part of the main transformer hole and the outlet wire section of the outlet wire hole, so that the structural design and construction difficulty are reduced, the cable is convenient to lay quickly, and the efficiency is high; the labor intensity of workers can be reduced, and labor is saved; the investment and the engineering quantity are both reduced.
3) Compared with the traditional outgoing line connecting section which adopts buried cable galleries on the upper layer and the lower layer to connect the outgoing line hole entrance and the GIS building, the invention integrates the original upper layer and lower layer structure and optimizes the stair section of the internal outgoing line hole section, so that the medium-low voltage cable trench can be led out close to the ground elevation, and the original cable gallery structure on the upper layer and the lower layer can be improved by arranging an open cable trench; on the first hand, the open cable trench is beneficial to cable laying in the electromechanical installation stage; on the second hand, the excavation amount and the pouring work amount of the concrete structure (without an overhaul and inspection channel) are reduced, and the investment and the construction period are effectively saved; in the third aspect, the operation period is more convenient for inspection tour and cable maintenance and replacement; meanwhile, the bottom elevation of the open cable trench is lower than that of the medium-low voltage cable trench, so that the problem that accumulated water in the open cable trench cannot be discharged in time to cause rainwater to flow back into the medium-low voltage cable trench in a rainstorm or rainy period can be avoided.
4) The air exhaust and smoke exhaust room is arranged at the joint of the outlet section of the outlet hole and the slope surface of the first-stage side slope of the switch station, the air exhaust and smoke exhaust requirements are met, and meanwhile, the occupation of a plane field is reduced, so that the land acquisition and field leveling excavation engineering quantity is reduced.
5) The invention implements a green construction idea, simplifies the structural design, saves resources to the maximum extent and reduces construction activities which have negative influence on the environment through scientific management and technical progress on the premise of ensuring the basic requirements of quality (concrete structure), safety (fire partition), functions (integrating medium and low voltage cable trenches, overhauling and patrolling, air exhaust and smoke exhaust) and the like, and realizes four-section and one-environment protection (energy conservation, land conservation, water conservation, material conservation and environmental protection).
Drawings
FIG. 1 is a longitudinal cross-sectional view of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
fig. 3 is a sectional view taken along line B-B in fig. 1.
Reference numerals: 1. the system comprises an outlet section of a wire outlet hole, 2 parts of an air exhaust and smoke exhaust channel, 3 parts of an overhaul and inspection channel, 4 parts of a high-voltage cable outlet channel, 5 parts of a fire partition wall, 6 parts of a medium-low voltage cable trench, 7 parts of a drainage trench, 8 parts of a structural joint, 9 parts of an air exhaust and smoke exhaust room, 10 parts of a concrete structure, 11 parts of a permeable pipe, 12 parts of a cable gallery, 13 parts of a bright cable trench, 14 parts of a water stop copper sheet, 15 parts of a wire outlet connecting section, 16 parts of a switch station for excavating a side slope for the first time, and 17 parts of a GIS building.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1, the invention provides an outlet section arrangement structure of a high-voltage cable outlet hole of a hydroelectric engineering, which is used for solving the arrangement problem of an outlet system of a group power generation mode of underground powerhouse holes; the arrangement structure comprises an outlet section 1 of the outlet hole connected with an underground main transformer hole, wherein the outlet section 1 of the outlet hole is connected with a GIS building 17 through an outlet connecting section 15 with a certain length.
Furthermore, the outlet section 1 of the outlet hole is positioned inside the first-stage excavation side slope 16 of the switch station, the outlet section 1 of the outlet hole is of a straight-wall circular arch structure with an upper layer structure and a lower layer structure, and excavation, support and forming are carried out according to actual topography and geological conditions. The outlet section 1 of the outlet tunnel comprises an upper layer space and a lower layer space which are separated by a concrete structure, the excavation width of the upper layer space of the outlet section 1 of the outlet tunnel is larger than that of the lower layer space, and the cross section of the outlet section is in a 'big top and small bottom' type.
As shown in fig. 2, the upper space includes a fire partition 5 arranged along the extension direction of the wire outlet, and an exhaust smoke channel 2 and an inspection channel 3 respectively arranged on the left and right sides of the fire partition 5, and a medium-low voltage cable trench 6 is arranged in the inspection channel 3; wherein, the fire partition 5 is constructed by bricks or other building materials which meet the fire-proof grade requirements of the project; the left and right side relative relation of the exhaust smoke channel 2 and the overhaul patrolling channel 3 can be flexibly arranged according to the specific requirements of engineering outgoing lines. The exhaust smoke exhaust channel 2 needs to meet the space requirements necessary for arranging the fan and installing the fan, the medium and low voltage cable trench 6 and the overhaul patrol channel 3 need to meet the space requirements for wiring the medium and low voltage cable and overhauling the patrol channel, wherein the minimum width of the overhaul patrol channel 3 is not less than 1.2m, and the size requirement of the medium and low voltage cable trench 6 is determined according to the outlet requirement of the medium and low voltage cable.
As shown in fig. 2, the lower-layer space is a high-voltage cable outlet channel 4 which is arranged in a through-length manner along the extension direction of the outlet hole, the size of the high-voltage cable outlet channel 4 is determined according to the specific high-voltage outlet requirement, and the requirements of outlet and installation and maintenance space are met at the same time.
As shown in fig. 1, the outlet connection section 15 includes a cable gallery 12 connected to the high-voltage cable outlet passage 4, and an open cable trench 13 disposed above the cable gallery 12 and connected to the medium-low voltage cable trench 6. The bottom surface elevation of the open cable trench 13 is lower than that of the medium-low voltage cable trench 6, so that the problem that accumulated water in the open cable trench cannot be discharged in time during heavy rain or rainy days to cause rainwater to flow back into the medium-low voltage cable trench can be avoided. The cable gallery 12 and the open cable trench 13 can be designed integrally or independently as required by actual projects. An air exhaust and smoke exhaust room 9 is arranged above one end of the high-voltage cable outlet channel 4 at the opening, and the air exhaust and smoke exhaust room 9 is arranged close to the medium-low voltage cable trench 6.
As shown in fig. 2, drainage ditches 7 are arranged inside the outlet section 1 of the outlet hole and the outlet connecting section 15, and are used for guiding water seepage of surrounding rocks to a drainage system (a switch station water supply and drainage system) outside the hole.
Further, a water permeable pipe 11 is arranged between the concrete structure of the outlet section 1 of the outlet hole and surrounding rocks, the water permeating of the surrounding rocks enters the drainage ditch 7 through the water permeable pipe 11 around the concrete structure, wherein the water permeable pipe 11 can be a DN50 soft water permeable pipe.
Furthermore, a structural seam 8 is arranged between the outlet section 1 of the outlet hole and the outlet connecting section 15, and a water stopping copper sheet 14 is arranged in the seam to avoid adverse effects caused by uneven settlement among different structures.
The invention can simultaneously meet the following three functional requirements: exhausting air and smoke, outgoing middle and low voltage cables, overhauling and patrolling, and outgoing high voltage cables. The invention is suitable for the field of hydroelectric engineering, and the sizes of the outlet holes are different according to the particularity of each project, so that the invention does not relate to specific sizes, and the specific structural size needs to be specifically set according to the specific project condition.
In addition, it should be noted that, a GIS is called a gassinestedmetallically closed switchgear, and is a gas insulated metal enclosed switchgear, and a GIS building can be generally understood as a switchgear arrangement building of a whole high-voltage power transmission system, and a specific structure, an operation principle, a control mode and a space arrangement mode of the GIS building can be selected conventionally in the field, and should not be regarded as an innovation point of the present invention, and it should be understood to those skilled in the art, and the present invention is not described in detail in further detail.
According to the description and the drawings of the invention, a person skilled in the art can easily manufacture or use the outlet section arrangement structure of the high-voltage cable outlet hole in the water and electricity engineering, and can generate the positive effects recorded in the invention.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modifications and equivalent variations of the above embodiment according to the technical spirit of the present invention are within the scope of the present invention.
Claims (7)
1. The utility model provides a water and electricity engineering high tension cable is qualified for next round of competitions hole export section arrangement structure which characterized in that: the outlet section (1) of the outlet hole is connected with a main transformer hole, and the outlet section (1) of the outlet hole is connected with a GIS building (17) through an outlet connecting section (15) with a certain length;
the outlet section (1) of the outlet hole comprises an upper layer space and a lower layer space which are separated by a concrete structure (10); the upper space comprises a fireproof partition wall (5) arranged along the extension direction of the wire outlet hole, and an air exhaust and smoke exhaust channel (2) and an overhaul and inspection channel (3) which are respectively arranged at the left side and the right side of the fireproof partition wall (5), and a medium-low voltage cable trench (6) is arranged in the overhaul and inspection channel (3); the lower layer space is a high-voltage cable outlet channel (4) which is arranged in a through length mode along the extension direction of the outlet hole;
the outlet connecting section (15) comprises a cable gallery (12) connected with the high-voltage cable outlet channel (4) and an open cable trench (13) arranged above the cable gallery (12) and connected with the medium-low voltage cable trench (6);
the excavation width of the upper layer space of the outlet section (1) of the outlet tunnel is larger than that of the lower layer space, and the cross section of the outlet section is in a 'big-end-up' type.
2. The outlet section arrangement structure of the high-voltage cable outlet hole of the hydroelectric engineering according to claim 1, which is characterized in that: an air exhaust and smoke exhaust room (9) is arranged above one end, located at the opening, of the high-voltage cable outlet channel (4), and the air exhaust and smoke exhaust room (9) is arranged close to the medium-low voltage cable trench (6).
3. The outlet section arrangement structure of the high-voltage cable outlet hole of the hydroelectric engineering according to claim 1, which is characterized in that: and drainage ditches (7) are arranged inside the outlet section (1) of the outlet hole and the structure of the outlet connecting section (15) and are used for draining the water seepage of the surrounding rock to a drainage system outside the hole.
4. The outlet section arrangement structure of the high-voltage cable outlet hole of the hydroelectric engineering according to claim 3, characterized in that: and a water permeable pipe (11) is arranged between the concrete structure (10) of the outlet section (1) of the outlet hole and the surrounding rock, and the surrounding rock seepage water enters the drainage ditch (7) through the water permeable pipe (11) around the concrete structure (10).
5. The outlet section arrangement structure of the high-voltage cable outlet hole of the hydroelectric engineering according to claim 1, which is characterized in that: a structural seam (8) is arranged between the outlet section (1) of the outlet hole and the outlet connecting section (15), and a water stopping copper sheet (14) is arranged in the seam to avoid adverse effects caused by uneven settlement among different structures.
6. The hydroelectric engineering high-voltage cable outlet hole outlet section arrangement structure of claim 1, which is characterized in that: the outlet section (1) of the wire outlet hole is of a straight wall circular arch structure with an upper layer structure and a lower layer structure.
7. The outlet section arrangement structure of the high-voltage cable outlet hole of the hydroelectric engineering according to claim 1, which is characterized in that: the bottom surface elevation of the open cable trench (13) is lower than that of the medium-low voltage cable trench (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010944368.9A CN112290500B (en) | 2020-09-10 | 2020-09-10 | Water and electricity engineering high tension cable outlet hole export section arrangement structure |
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| CN202010944368.9A CN112290500B (en) | 2020-09-10 | 2020-09-10 | Water and electricity engineering high tension cable outlet hole export section arrangement structure |
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| CN112290500A CN112290500A (en) | 2021-01-29 |
| CN112290500B true CN112290500B (en) | 2022-06-14 |
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| CN204238193U (en) * | 2014-09-11 | 2015-04-01 | 中国电建集团成都勘测设计研究院有限公司 | Underground Hydro-electric Power Station fitting structure |
| CN105089024A (en) * | 2015-07-22 | 2015-11-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Underground powerhouse wire outgoing arrangement mode and structure |
| CN209194584U (en) * | 2018-11-05 | 2019-08-02 | 国网江苏省电力有限公司经济技术研究院 | A kind of electric power Pipe rack for extra-high voltage |
| CN110535036A (en) * | 2019-10-09 | 2019-12-03 | 中国能源建设集团广东省电力设计研究院有限公司 | A kind of indoor GIS device bilayer "-" type outlet arragement construction of 220kV |
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| CN112290500A (en) | 2021-01-29 |
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