阅读说明：本技术 一种适用于常导高速磁浮的隧道电缆敷设结构 (Tunnel cable laying structure suitable for high-speed magnetic levitation of normal conductance ) 是由 陈健雄 张雷 吕文利 吴杰 高健 熊康龙 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种适用于常导高速磁浮的隧道电缆敷设结构,属于常导高速磁浮设计施工技术领域,其通过开关站洞室和电缆通道的对应设置,可有效实现定子开关站的容置和电缆的敷设,再通过电缆余长腔、托架以及电缆进出口等结构的对应设置,能有效实现电缆的分层敷设和可靠连接,保证常导高速磁浮各定子段处电缆的可靠敷设。本发明的适用于常导高速磁浮的隧道电缆敷设结构,其结构简单,设置简便,能有效实现常导磁浮交通在隧道内的电缆敷设,保证磁浮线路正常运行的同时,减少对隧道衬砌的损坏,保证常导高速磁浮运营的安全性和可靠性,推动常导高速磁浮技术的推广与应用,具有较好的应用前景和实用价值。(The invention discloses a tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation, which belongs to the technical field of design and construction of normal-conduction high-speed magnetic levitation. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation is simple in structure and simple and convenient to set, can effectively realize cable laying of normal-conduction magnetic levitation traffic in a tunnel, reduces damage to tunnel lining while ensuring normal operation of a magnetic levitation line, ensures safety and reliability of normal-conduction high-speed magnetic levitation operation, promotes popularization and application of normal-conduction high-speed magnetic levitation technology, and has good application prospect and practical value.)

1. A tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation is arranged in a tunnel with normal-conduction high-speed magnetic levitation and is characterized by comprising a switching station chamber and a cable channel;

the switching station chamber is arranged on one side wall surface of the tunnel and used for accommodating the stator switching station; a cable surplus length cavity is arranged on one side of the stator switch station close to the rail running area and used for accommodating cables during leading-in and/or leading-out; and is

Cable channels are arranged in the tunnel corresponding to the magnetic suspension lines and extend along the longitudinal direction of the tunnel respectively; a plurality of brackets are respectively arranged on the lateral two side wall surfaces of the cable channel in a layered manner and used for laying a plurality of cables in a layered manner; and

and a plurality of cable inlets and outlets are formed corresponding to the cable extra-long cavity, so that the cable from the cable channel can be connected to the stator switch station after passing through the cable extra-long cavity, and the cable connected from the stator switch station can extend to the stator section of the rail running area after passing through the cable extra-long cavity.

2. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to claim 1, wherein the tunnel is a single-hole double-line tunnel, and two magnetic levitation lines are arranged in parallel in the tunnel; correspondingly, the cable channel in the tunnel is divided into two channels which are arranged on two transverse sides of the tunnel.

3. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to claim 2, wherein the cable channel is a profiled cable channel, and the bottom of the profiled cable channel extends to the inner peripheral wall surface of the tunnel lining.

4. A tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to claim 3, wherein the number of the bracket layers on one side wall surface of the cable channel close to the track running area is larger than that on the other side wall surface.

5. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to claim 1, wherein the tunnel is a double-hole single-line tunnel which comprises two tunnel units arranged side by side, and a magnetic levitation line is arranged in each tunnel unit;

correspondingly, the switch station chamber is arranged on the side wall surface between the two tunnel units, the stator switch station is accommodated in the switch station chamber, and cable surplus length cavities are respectively arranged on the two transverse sides of the stator switch station.

6. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to claim 5, wherein a cable channel is respectively arranged in the two tunnel units; the two cable channels are respectively arranged at one side close to the switch station cavern, and the two cable channels are respectively communicated with the corresponding cable surplus length cavities through a plurality of cable inlets and outlets.

7. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to claim 6, wherein the bottom surface of the cable channel is a lining inner wall surface of the tunnel unit; or

The bottom surface of the cable channel is a horizontal plane higher than the inner wall surface of the lining of the tunnel unit.

8. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to any one of claims 1 to 7, wherein main frames are respectively arranged on two lateral side wall surfaces of the cable channel and used for fixedly connecting one end of the bracket.

9. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to any one of claims 1-8, wherein the number of the cable extra-long cavities between the stator switching station and the cable channel is two, and the two cable extra-long cavities are separated by a partition wall and are respectively used for winding and accommodating the feeder cable and the stator cable.

10. The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation according to any one of claims 1-9, wherein the interval between two vertically adjacent layers of brackets is 200-300 mm; and the vertical distance between the bracket at the lowest layer and the bottom surface of the channel is not less than 100 mm.

Technical Field

The invention belongs to the technical field of design and construction of normal-conduction high-speed magnetic levitation, and particularly relates to a tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation.

Background

The normal conducting high-speed magnetic suspension can also be called long stator high-speed magnetic suspension, and the positive line of the normal conducting high-speed magnetic suspension is generally supplied with power to the long stators of the motors on the two sides of the magnetic suspension railway by three groups of mutually independent three-phase cables. Meanwhile, in order to reduce line voltage drop and loss, each phase of feed cable is generally formed by connecting 2 feed cables in parallel; in addition, for supplying power to a power rail system, a trackside device and the like, a group of three-phase ring network cables are often laid along the line, that is, 18 single-core high-voltage feeder cables and 3 ring network cables need to be laid along a single line, and 36 single-core high-voltage feeder cables and 6 ring network cables need to be laid along a double line. Therefore, the cabling scheme is designed to be an important ring for designing a normally-conductive high-speed magnetic levitation scheme.

Currently, in order to reduce the voltage drop due to leakage reactance over long stator sections, the traction area is generally electrically partitioned by providing stator switchgears. The existing long stator high-speed magnetic levitation is fresh, tunnel engineering exists, few researches on cable laying of the long stator high-speed magnetic levitation in the tunnel are conducted at home and abroad, and a cable laying technology of a system is not formed temporarily. In addition, for the existing wheel track systems of urban rail transit, high-speed railway and the like, the technical scheme adopted by the power supply subarea cannot be directly replaced into the design of the normally-conductive high-speed magnetic levitation. For example, when a cable is laid in a tunnel section, a cable channel is arranged on one side of a tunnel of a high-speed railway, the cable is flatly laid at the bottom of a groove, but the number of long stator high-speed magnetic suspension high-voltage cables is far more than that of high-speed railway ring network cables, the adoption of the mode of flatly laying the bottom of the groove is not beneficial to heat dissipation of the cable, the service life of the cable is seriously influenced, and faults such as interphase short circuit and the like are easy to occur; and for urban rail transit, it often fixes the cable support on the tunnel wall through expansion bolts and chemical crab-bolt under the urgent evacuation platform of both sides, later fix the cable on the cable support, this kind of mode needs to carry out intensive punching on the shield section of jurisdiction, there is certain damage to the structure of shield section of jurisdiction, in addition high-speed maglev operating speed is far higher than urban rail transit, when high-speed maglev train moves in the tunnel, can produce more strong transient pressure to the tunnel wall and strike, consequently, it has great potential safety hazard to fix the cable support on the tunnel wall.

Disclosure of Invention

Aiming at one or more of the defects or the improvement requirements in the prior art, the invention provides a tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation, which can realize cable laying of a normal-conduction high-speed magnetic levitation tunnel, ensure that a plurality of cables and multiple functions are led in and out during normal-conduction high-speed magnetic levitation design construction, fully ensure the stability and the safety of cable laying, solve the problem of cable laying heat dissipation and simultaneously avoid the damage to the wall surface structure of the tunnel.

In order to achieve the purpose, the invention provides a tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation, which is arranged in a tunnel of the normal-conduction high-speed magnetic levitation and comprises a switch station chamber and a cable channel;

the switching station chamber is arranged on one side wall surface of the tunnel and used for accommodating the stator switching station; a cable surplus length cavity is arranged on one side of the stator switch station close to the rail running area and used for accommodating cables during leading-in and/or leading-out; and is

Cable channels are arranged in the tunnel corresponding to the magnetic suspension lines and extend along the longitudinal direction of the tunnel respectively; a plurality of brackets are respectively arranged on the lateral two side wall surfaces of the cable channel in a layered manner and used for laying a plurality of cables in a layered manner; and

and a plurality of cable inlets and outlets are formed corresponding to the cable extra-long cavity, so that the cable from the cable channel can be connected to the stator switch station after passing through the cable extra-long cavity, and the cable connected from the stator switch station can extend to the stator section of the rail running area after passing through the cable extra-long cavity.

As a further improvement of the invention, the tunnel is a single-hole double-line tunnel, and two magnetic suspension lines are arranged in the tunnel in parallel; correspondingly, the cable channel in the tunnel is divided into two channels which are arranged on two transverse sides of the tunnel.

As a further improvement of the invention, the cable channel is a special-shaped cable channel, and the bottom of the cable channel extends to the inner peripheral wall surface of the tunnel lining.

As a further improvement of the invention, the number of the bracket layers on one side wall surface of the cable channel close to the rail running area is larger than that on the other side wall surface.

As a further improvement of the invention, the tunnel is a double-hole single-line tunnel which comprises two tunnel units arranged side by side, and each tunnel unit is provided with a magnetic suspension line;

correspondingly, the switch station chamber is arranged on the side wall surface between the two tunnel units, the stator switch station is accommodated in the switch station chamber, and cable surplus length cavities are respectively arranged on the two transverse sides of the stator switch station.

As a further improvement of the invention, two tunnel units are respectively provided with a cable channel; the two cable channels are respectively arranged at one side close to the switch station cavern, and the two cable channels are respectively communicated with the corresponding cable surplus length cavities through a plurality of cable inlets and outlets.

As a further improvement of the invention, the bottom surface of the cable channel is the lining inner wall surface of the tunnel unit; or

The bottom surface of the cable channel is a horizontal plane higher than the inner wall surface of the lining of the tunnel unit.

As a further improvement of the invention, main frames are respectively arranged on the lateral two side wall surfaces of the cable channel and used for fixedly connecting one end of the bracket.

As a further improvement of the invention, the two extra-long cable cavities between the stator switching station and the cable channel are longitudinally arranged at intervals, and the two extra-long cable cavities are separated by a partition wall and are respectively used for coiling and accommodating the feeder cable and the stator cable.

As a further improvement of the invention, the interval between two vertically adjacent layers of brackets is 200-300 mm; and the vertical distance between the bracket at the lowest layer and the bottom surface of the channel is not less than 100 mm.

The above-described improved technical features may be combined with each other as long as they do not conflict with each other.

Generally, compared with the prior art, the technical scheme conceived by the invention has the following beneficial effects:

(1) the tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation can effectively realize the accommodation of a stator switch station and the laying of cables through the corresponding arrangement of the switch station chamber and the cable channel, and can effectively realize the layered laying and reliable connection of the cables through the corresponding arrangement of structures such as a cable extra-long cavity, a bracket, a cable inlet and a cable outlet, ensure the reliable laying of the cables at each stator section of the normal-conduction high-speed magnetic levitation, ensure the stable arrangement and safe operation of the normal-conduction high-speed magnetic levitation in the tunnel, and promote the technical development and application of the normal-conduction high-speed magnetic levitation.

(2) According to the tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation, the arrangement positions of the switch station chambers in the single-hole double-line tunnel and the double-hole single-line tunnel are preferably arranged and matched with the corresponding arrangement of the cable channels, so that the arrangement of the tunnel cable laying structure in different types of tunnels is accurately realized, and the arrangement adaptability and compatibility of the tunnel cable laying structure are improved.

(3) According to the tunnel cable laying structure suitable for normal-conduction high-speed magnetic suspension, the special-shaped cable channel is arranged in the single-hole double-line tunnel, so that the bottom of the cable channel directly extends to the inner wall surface of the tunnel lining, the depth of the cable channel is increased, the tunnel lining structure is prevented from being damaged due to cable laying, and the setting reliability and stability of the normal-conduction high-speed magnetic suspension tunnel are further improved.

(4) According to the tunnel cable laying structure suitable for normally-conducting high-speed magnetic levitation, the switch station cavern is arranged between the two tunnel units of the double-hole single-line tunnel, and the cable channels of the two magnetic levitation lines are correspondingly arranged on one side close to the switch station cavern, so that the cable laying is effectively realized, and the cable laying length is fully shortened.

(5) The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation is simple in structure and simple and convenient to set, can effectively realize cable laying of normal-conduction magnetic levitation traffic in a tunnel, reduces damage to tunnel lining while ensuring normal operation of a magnetic levitation line, ensures safety and reliability of normal-conduction high-speed magnetic levitation operation, promotes popularization and application of normal-conduction high-speed magnetic levitation technology, and has good application prospect and practical value.

Drawings

Fig. 1 is a schematic view of an arrangement form of a tunnel cable laying structure in a single-hole double-line tunnel according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the arrangement form of the tunnel cable laying structure in the double-hole single-wire tunnel in the embodiment of the invention;

FIG. 3 is a schematic plan view of a switchyard cavern within a single-hole twin-wire tunnel in an embodiment of the invention;

FIG. 4 is a schematic diagram of a plan layout of switchyard chambers within a double-tunnel single-line tunnel in an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a structure of a profiled cable channel according to an embodiment of the present invention;

in all the figures, the same reference numerals denote the same features, in particular:

1. a tunnel; 101. lining; 102. a vehicle clearance; 103. a rescue channel; 104. a foundation;

2. a switch station cavern; 201. a stator switching station; 202. a cable excess length cavity; 203. a cable inlet and outlet; 204. a partition wall;

3. a cable; 4. a cable channel; 401. a main frame; 402. a bracket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example (b):

referring to fig. 1 to 5, a tunnel cable laying structure suitable for normal-conducting high-speed magnetic levitation in a preferred embodiment of the present invention includes a cable channel 4 extending along a longitudinal direction of a tunnel (an extending direction of a magnetic levitation line in the tunnel) and a switch station chamber 2 corresponding to the cable channel 4.

In particular, the cable channel 4 in the preferred embodiment is arranged below the rescue channel 103 in the tunnel 1, wherein the switchyard cavern 2 is arranged at one side of the trackbound area in the tunnel, either separately or in common with the equipment cavern in the tunnel.

In the preferred embodiment, the tunnel 1 is largely divided into a single-hole two-wire tunnel as shown in FIG. 1 and a double-hole one-wire tunnel as shown in FIG. 2. Of course, in actual setting, the tunnel cable laying structure in the preferred embodiment may also be used in other forms of tunnel structures, such as a single-hole single-line tunnel and a multi-hole multi-line tunnel, which are not described herein again.

Further, for a single-hole double-track tunnel, the structure of which is shown in fig. 1, two magnetic suspension lines are formed side by side on the cross section of the tunnel 1, and at this time, a switch station chamber 2 is opened on one side wall surface of the tunnel 1, which may further be preferably a comprehensive chamber in the tunnel 1, and in addition to accommodating a stator switch station, other devices are also provided. Meanwhile, cable channels 4 are longitudinally arranged on both sides of the tunnel 1, and a plurality of layers of brackets 402 for supporting cables are formed in the cable channels 4, and a plurality of cables 3, for example, three cables per layer as shown in fig. 5, can be correspondingly supported on each layer of brackets 402.

At the same time, a stator switchyard 201 is provided in the switchyard cavern 2 corresponding to the cable 3 in the cable duct 4 to ensure power supply control of the individual stator segments. In practice, the stator switchyard 201 is housed in a switchyard cavern 2, which is separated from the trackbound area by a tunnel guard gate.

Moreover, in order to better realize the coiling of the cable 3 when the cable is connected into the stator switch station 201 and led out of the stator switch station 201 and ensure the reliability of the arrangement of the cable 3, a cable surplus length cavity 202 is arranged on one side of the switch station cavern 2 close to the rail running area, the cable surplus length cavity is further preferably arranged below the ground of the switch station cavern 2, and two sides of the cable surplus length cavity 202 are respectively provided with a cable inlet and outlet 203 corresponding to the stator switch station 201 and the cable channel 4, so that the cable 3 in the cable channel 4 enters the cable surplus length cavity 202 through the cable inlet and outlet 203 on one side, enters the switch station cavern 2 through the cable inlet and outlet 203 on the other side after the coiling is completed in the cable surplus length cavity 202, and is further connected to the stator switch station 201.

Correspondingly, the cable 3 coming out of the stator switching station 201 passes through the cable excess length cavity 202 and then extends into the cable channel 4, and extends out of a cable hole formed in one side of the top of the cable channel 4, and then is connected to the stator section in the track running area.

In order to better distinguish the cable 3 (i.e. feeder cable) entering the stator switch station 201 from the cable 3 (i.e. stator cable) exiting from the stator switch station 201, the cable excess length cavities 202 in the preferred embodiment are two cavities arranged side by side, and are separated by the partition wall 204, and a plurality of cable inlets and outlets 203 are respectively opened corresponding to two sides of each cable excess length cavity 202, and are respectively used for coiling, leading in and leading out of two cables.

Further preferably, in order to enable the cables 3 to be smoothly led in and out between the cable extra-long cavity 202 and the cable channel 4, the cable inlet and outlet 203 in the preferred embodiment is arranged in a form of a certain inclination angle with the longitudinal direction of the tunnel, for example, a 45 ° angle shown in the preferred embodiment is opened, that is, the central line of the cable inlet and outlet 203 forms an angle of 45 ° with the longitudinal direction of the tunnel. Meanwhile, in the preferred embodiment, at least two cable inlets and outlets 203 are formed in the same cable extra-long cavity 202 on the side close to the cable channel 4, and the inclination directions of the two cable inlets and outlets 203 are opposite, for example, in the preferred embodiment, the included angle between the center lines of the two cable inlets and outlets 203 is 90 °, so that the cables 3 on the two longitudinal sides of the switch station cavern 2 can smoothly enter and exit, the cables 3 are prevented from being excessively bent when entering and exiting the cable extra-long cavity 202, and the service life of the cables 3 is prolonged.

In addition, for the single-hole double-line tunnel, since the switch station chamber 2 is only opened at one side in the tunnel, the cable in the cable channel 4 of the magnetic suspension line at the side away from the switch station chamber 2 needs to be transversely arranged across the tunnel, for this reason, in the preferred embodiment, a containing groove for connecting the two cable channels 4 is transversely opened on the top surface of the foundation 104 for containing and pulling the cable 3.

Further, since the lining 101 in the single-hole double-line tunnel is thin and the setting height of the foundation 104 is shallow, the space between the ground of the rescue channel 103 and the inner wall surface of the lining 101 in the vertical direction is small, therefore, the cable channel 4 set for the single-hole double-line tunnel in the preferred embodiment is of a special-shaped structure, and the bottom surface of the cable channel is directly the inner wall surface of the lining 101. Because the inner peripheral wall surface of the lining 101 has a certain radian and the ground of the rescue channel 103 is horizontal, the space for arranging the bracket 402 on the two transverse sides of the cable channel 4 is different.

In fact, the profiled cable duct 4 has a greater area on one side of the track area than on the other side, and therefore the number of layers of brackets 402 arranged on both lateral sides of the cable duct 4 is different in the preferred embodiment, i.e. the number of layers of brackets 402 arranged on one side of the track area is greater than the number of layers of brackets 402 arranged on the other side. For example, in the cable duct 4 shown in fig. 5, the number of layers of the bracket 402 provided on one side near the rail running area is 5, and the number of layers of the bracket 402 on the other side is 3. By means of the arrangement of 8 layers of brackets 402 on the lateral two side wall surfaces of the cable channel 4, at least 3 cables can be placed on each layer, so that the laying of 24 cables can be realized, and the cable laying requirements of a single magnetic suspension line are fully met.

Of course, it will be understood that the number of layers of the brackets 402 on both lateral sides of the profiled cable channel 4 may be correspondingly preferred according to the requirements of the actual installation.

In more detail, in actual installation, the distance between two vertically adjacent layers of brackets 402 is 200mm to 300mm, and more preferably 250 mm. And the vertical spacing of the bracket 402 at the lowest layer from the bottom surface of the channel is not less than 100 mm. In order to provide the support bracket 402, a main frame 401 is provided on each of the lateral walls of the cable duct 4, which is preferably fixedly connected to the base 104 for the corresponding arrangement of the support bracket 402. Further, in the preferred embodiment, the brackets 402 and/or the main frames 401 are provided to extend continuously or to be provided at continuous intervals in the tunnel longitudinal direction as long as the layered laying of the cables 3 can be satisfied. At the same time, in order to obtain a maximum trench depth, the inner wall of the cable duct 4 on the side close to the track area in the preferred embodiment abuts against the side of the vehicle boundary 102, as shown in fig. 1.

Further, as shown in fig. 2, the double-hole single-line tunnel in the preferred embodiment includes two tunnels 1 arranged side by side in the cross section, and one magnetic suspension line is respectively arranged in the two tunnels 1. In order to better compromise between the two magnetic levitation lines, the switchyard cavern 2 in the preferred embodiment is opened between the two tunnels 1, which may further preferably be a transverse passage opened between the two tunnels 1.

Specifically, the stator switching station 201 of the double-hole single-wire tunnel is arranged in the switching station cavern 2 between the two tunnels 1, and the two transverse sides of the switching station cavern 2 are respectively separated from the rail running area through tunnel protection doors. Meanwhile, the two transverse sides of the stator switching station 201 are respectively provided with the cable extra-long cavities 202, and the cable channels 4 in the two tunnels 1 are respectively arranged at one side close to the stator switching station 201, so that the distance that the cable 3 needs to transversely extend due to connection with the stator switching station 201 can be shortened as much as possible.

Correspondingly, cable excess length cavities 202 are provided on both lateral sides of the stator switching station 201 for matching with the cable passages 4 in the two tunnels 1. It can be understood that cable inlets and outlets 203 are respectively formed on the cable extra-long cavity 202 near the stator switch station 201 and on two sides of the cable channel 4, and are used for the cables 3 to enter and exit. The arrangement of the cable access 203 is the same as that described above, and will not be described herein.

For a double-hole single-line tunnel, the depth of the foundation 104 of the tunnel 1 is usually larger, and at this time, when the cable channel 4 is arranged, the cable channel can be correspondingly arranged to be a standard cable trench as shown in fig. 2, that is, the bottom surface of the cable channel 4 is higher than the inner wall surface which is vertically opposite to the lining 101 and is arranged horizontally. Meanwhile, the number of the brackets 402 provided at both lateral sides of the cable tunnel 4 is the same. Of course, the cable channel 4 in the double-hole single-line tunnel may also be provided in the form of the aforementioned special-shaped channel according to actual needs, that is, the bottom surface of the cable channel 4 is the inner wall surface of the lining 101 of the tunnel 1.

It will be understood that, depending on the length of the tunnel 1, the stator switchyard stations 201 may be provided in a plurality at intervals in the longitudinal direction of the tunnel, and correspondingly the switchyard caverns 2 in a plurality at intervals. In practice, the stator switching station 201 is preferably arranged in correspondence with the ends of the stator segments.

The tunnel cable laying structure suitable for normal-conduction high-speed magnetic levitation is simple in structure and simple and convenient to set, can effectively realize cable laying of normal-conduction magnetic levitation traffic in a tunnel, reduces damage to tunnel lining while ensuring normal operation of a magnetic levitation line, prolongs service life of the tunnel, ensures safety and reliability of normal-conduction high-speed magnetic levitation operation, promotes popularization and application of a normal-conduction high-speed magnetic levitation technology, and has good application prospect and practical value.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.