Method for installing eccentric transportation track in TBM tunnel

Abstract

The application discloses a kind of installation methods of eccentric transport track in TBM tunnel, comprising ① one sleeper positioning device is arranged at the head and tail of locomotive transport track respectively ② the position of TBM locomotive transport sleeper is determined according to sleeper positioning device ③ the number of TBM locomotive transport sleeper is determined according to the length of locomotive transport track, when the TBM locomotive transport sleeper at the head and tail of locomotive transport track is installed, the TBM locomotive transport sleeper in the middle is positioned and installed using the line method ④ the installation and verification of locomotive transport track are completed through sleeper positioning device and track level adjustment device.The installation method of eccentric transport track in TBM tunnel provided by the application does not need to set up the rear supporting steel structure platform, so it saves investment and is convenient for construction, which not only ensures the normal material transportation of locomotive, but also facilitates equipment maintenance and personnel passage.

Description

Technical Field

[0001] This invention relates to the field of TBM tunnel construction technology, and in particular to a method for installing an eccentric transport track inside a TBM tunnel. Background Technology

[0002] Typically, in open-type TBMs, the tracks for transporting materials are laid on the ground at the center of the tunnel axis. However, due to the need to consider the space for the continuous conveyor belts and equipment installation on the sides, as well as pedestrian walkways, and the potential interference between the locomotive's operation and the continuous conveyor belt frame, the arrangement of the auxiliary equipment and the continuous conveyor belt within the tunnel becomes extremely difficult when this approach is used in small-diameter tunnels. In such cases, a steel structure platform is often placed on the TBM's auxiliary equipment. During operation, the locomotive, after running at the tunnel axis center, needs to enter the TBM's auxiliary equipment, climb the incline track, and then turn onto the track on the TBM's steel platform. Because of the small tunnel diameter, the locomotive's operation interferes with the continuous conveyor belt frame. Therefore, this approach not only requires the addition of an auxiliary steel structure platform, increasing investment costs, but also restricts the height and width of the transport locomotive when used in small-diameter tunnels, thus affecting material transport. Furthermore, this arrangement further reduces the operating space of the TBM's auxiliary equipment, affecting equipment maintenance and personnel access. To avoid these drawbacks, some researchers have proposed a scheme of eccentrically positioned tracks running the entire length of the tunnel. However, existing technologies can only determine the track laying location by manual measurement, which is inefficient and has very high labor costs, affecting the construction process and construction costs. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a method for installing an eccentric transport track within a TBM tunnel, specifically employing the following technical solution: The installation method of eccentric transport track in TBM tunnels described in this invention achieves the positioning of TBM locomotive transport sleepers through an eccentric positioning device. The TBM locomotive transport sleeper includes a pair of first supports installed on the tunnel floor. The first supports are located on both sides of the tunnel centerline and are spaced unequally from the tunnel centerline. Each first support is composed of a first bottom support plate and a first vertical I-beam. The first vertical I-beams are connected by first horizontal channel steel. Locomotive transport tracks, which are fixed by track pressure plates and bolt assemblies, are respectively installed on the top surface of the first horizontal channel steel corresponding to the first vertical I-beams. Positioning insertion holes are also provided on the top surface of the first horizontal channel steel. The eccentric positioning device consists of a sleeper positioning device and a track leveling device. The eccentric positioning device includes a fixing component, a guide component, and a positioning angle plate. The fixing component is located at the bottom of the tunnel structure beam and extends downward. The guide component is connected to the fixing component, and a limit component is provided at the bottom of the guide component. The guide component has upper and lower positioning holes staggered in the middle. The positioning angle plate is sleeved on the guide component. A connecting pin is provided on the sleeve part of the positioning angle plate. The outer extension of the positioning angle plate has a vertical positioning surface for positioning the eccentric track, and a positioning pin is provided on the outer extension for determining the position of the sleeper. The track leveling device includes a horizontal distance plate. A level indicator is provided at the top of the horizontal distance plate. Track clamps are provided at both ends of the horizontal distance plate. A hydraulic jack is provided below the horizontal distance plate. The installation method of the locomotive transport track includes the following steps: S1, a sleeper positioning device is installed at each end of the locomotive transport track according to its length; S2. Determine the position of the TBM locomotive transport sleeper according to the sleeper positioning device: pre-install the TBM locomotive transport sleeper, then rotate the outer extension of the positioning angle plate to the top of the TBM locomotive transport sleeper, then rotate the positioning pin to insert it into the positioning hole of the first horizontal channel steel, and adjust the position of the first horizontal channel steel according to the indication of the positioning pin to complete the positioning and fixing of the TBM locomotive transport sleeper. S3. Determine the number of TBM locomotive transport sleepers based on the length of the locomotive transport track. After the TBM locomotive transport sleepers at both ends of the locomotive transport track are installed, the middle TBM locomotive transport sleepers are positioned and installed using the tensioning method. S4. The locomotive transport track is positioned near the sleeper positioning device by the vertical positioning face of the positioning angle plate. After the locomotive transport track on the right side is installed, the locomotive transport track on the other side is installed on the first horizontal channel steel according to the track spacing. Finally, the track leveling device is used to check and adjust its spacing and levelness.

[0004] The track clamp includes an L-shaped clamp plate integrated with the horizontal distance plate. The L-shaped clamp plate has a vertical calibration surface that contacts the inner side wall of the track and a horizontal calibration surface that contacts the top wall of the track. The L-shaped clamp plate is also connected to an L-shaped hook plate by a spring cotter pin. The L-shaped hook plate is fixed to the outer side wall and the bottom surface of the track.

[0005] The track leveling device adjusts the track spacing and levelness as follows: Place the horizontal spacer plate on both sides of the locomotive transport track, check its levelness with a level indicator, and check the spacing by the degree of fit between the locomotive transport track and the L-shaped clamp plate; if the heights of the two locomotive transport tracks are inconsistent, install the L-shaped hook plate on the L-shaped clamp plate to fix the locomotive transport track; then, place a hydraulic jack between the horizontal spacer plate and the first horizontal channel steel, adjust the two locomotive transport tracks to the same height, and place shims under the locomotive transport track with the lower elevation until the two locomotive transport tracks are level.

[0006] The TBM locomotive transport sleeper is also equipped with TBM rear-mounted sleepers on both sides. The TBM rear-mounted sleepers are symmetrically arranged along the tunnel centerline and are connected to the TBM locomotive transport sleepers through inclined spacers.

[0007] The TBM rear-mounted sleeper includes a second bracket installed on the tunnel floor. The second bracket is composed of a second bottom support plate, a second vertical I-beam, and a second horizontal channel steel. The top surface of the second horizontal channel steel is used to install the TBM rear-mounted trolley travel track, which is fixed by a track pressure plate and bolt assembly.

[0008] The inclined spacer plate includes an inclined I-beam that is welded to a second vertical I-beam at one end and to a flat end plate at the other end. A pair of clips for securing the first vertical I-beam are welded onto the flat end plate.

[0009] The installation method of the locomotive transport track also includes: after completing step four, installing inclined spacer plates on the first brackets on the left and right sides of the TBM locomotive transport sleeper, and installing the TBM rear sleeper according to the positioning of the inclined spacer plates, and then installing the TBM rear trolley travel track.

[0010] The present invention provides a method for installing eccentric transport tracks in TBM tunnels. By eccentrically setting locomotive transport sleepers and installing TBM-supporting sleepers on both sides of the locomotive transport sleepers using inclined spacers, both locomotive transport sleepers and TBM-supporting sleepers can be simultaneously arranged on the ground. Due to the increased space on one side of the track, a continuous belt conveyor can be installed, greatly facilitating TBM construction. When laying the eccentric track, a positioning device consisting of a sleeper positioning device and a track leveling device is used. The sleeper positioning device is set on the tunnel structural beam, and its positioning angle plate can achieve the positioning of asymmetrical sleepers and the eccentric track on one side. The positioning angle plate can be raised, lowered, and rotated, effectively avoiding interference with locomotive transport. The track leveling device can verify and adjust the spacing and level of the eccentric tracks on both sides. The above-mentioned positioning device has a simple structure and is easy to use. It can quickly measure and locate the installation position of the eccentric track in the tunnel, thereby improving measurement efficiency and reducing labor costs. The installation method of the eccentric transport track in the TBM tunnel provided by this invention does not require the setting of a supporting steel structure platform, so it saves investment and is easy to construct. It can not only ensure the normal material transportation of locomotives, but also facilitate equipment maintenance and personnel passage. Attached Figure Description

[0011] Figure 1 This is a diagram showing the usage status of the sleeper positioning device described in this invention.

[0012] Figure 2 This is a diagram showing the usage status of the track leveling device described in this invention. Detailed Implementation

[0013] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific operation processes are given. However, the scope of protection of the present invention is not limited to the following embodiments.

[0014] like Figure 1 , 2 As shown, the installation method of the eccentric transport track in a TBM tunnel according to the present invention includes installing a TBM locomotive transport sleeper A for laying the locomotive transport track M and a TBM rear-mounted sleeper B for laying the TBM rear-mounted trolley travel track N on the tunnel floor. The TBM locomotive transport sleeper A is eccentrically positioned along the tunnel's central axis and is positioned by an eccentric positioning device C. The TBM rear-mounted sleeper B is positioned outside the TBM locomotive transport sleeper A, symmetrically arranged along the tunnel's central axis, and is connected to the TBM locomotive transport sleeper A by an inclined spacer plate D.

[0015] The aforementioned TBM locomotive transport sleeper A includes a pair of first supports mounted on the tunnel floor. The two first supports are positioned on both sides of the tunnel's central axis, with unequal distances from the tunnel's central axis. Figure 1 The distance between the first support on the right and the tunnel centerline is greater than the distance between the first support on the left and the tunnel centerline. The first support is composed of a first bottom support plate A1 and a first vertical I-beam A2. The two first vertical I-beams A2 are connected by a first horizontal channel steel A3. On the top surface of the first horizontal channel steel A3, corresponding to the first vertical I-beam A2, locomotive transport rails M are respectively set by rail pressure plates and bolt assemblies. The top surface of the first horizontal channel steel A3 is also provided with positioning holes.

[0016] The aforementioned TBM rear sleeper B includes a second support set on the tunnel floor. The second support is composed of a second bottom support plate B1, a second vertical I-beam B2, and a second horizontal channel steel B3. The top surface of the second horizontal channel steel B3 is used to set the TBM rear trolley travel track N, which is fixed by a track pressure plate and bolt assembly.

[0017] The aforementioned inclined spacer plate D includes an inclined I-beam D2, one end of which is welded to the second vertical I-beam B2 and the other end of which is welded to the flat end plate D1. A pair of clamps D3 for securing the first vertical I-beam A2 are welded onto the flat end plate D1.

[0018] The aforementioned eccentric positioning device C consists of a sleeper positioning device and a track leveling device.

[0019] Specifically, the sleeper positioning device consists of a fixing component C1, a guide component C2, and a positioning angle plate C3. The fixing component C1 is installed at the bottom of the tunnel structural beam K and extends downwards. The guide component C2 is coaxially mounted at its bottom. The guide component C2 is a circular tube segment, with an annular plate (C21) with a diameter larger than the tube segment welded to its bottom as a limiting component. The middle of the circular tube segment has an upper positioning hole C22 and a lower positioning hole C23. The central axis of the upper positioning hole C22 is arranged along the longitudinal direction of the tunnel. The lower positioning hole C23 is offset from the upper positioning hole C22 by 90° and is located on the outside of the first support in the TBM locomotive transport sleeper A. The guide component C2 is connected to the positioning angle plate C3. The sleeve portion of the positioning angle plate C3 is an annular structure adapted to the circular tube segment of the guide component C2. It is sleeved on the circular tube segment, and this annular structure is provided with a connecting pin C31 that connects selectively to either the upper positioning hole C22 or the lower positioning hole C23. When the insertion position of the connecting pin C31 is changed, not only can the height of the positioning angle plate C3 be adjusted, but its outer extension can also be rotated to the outside of the TBM locomotive transport sleeper A, avoiding interference with locomotive transport. The outer extension of the positioning angle plate C3 has a vertical positioning surface C32 for positioning the locomotive transport track M above the first bracket, and a positioning pin C33 for determining the position of the TBM locomotive transport sleeper A is provided on the outer extension. The positioning pin C33 has an L-shaped structure, and a pair of pin support plates C34 for inserting the positioning pin C33 are welded on the outer extension. The lower part of the pin support plate C34 is coaxially mounted with a positioning sleeve C35 for passing through the positioning pin C33. When positioning the TBM locomotive transport sleeper A, rotate the positioning pin C33 in the pin support plate C34 by 90° so that its handle is aligned with the gap in the pin support plate C34. Then push the positioning pin C33 down so that the positioning pin C33 moves downward along the positioning sleeve C35 until the positioning pin C33 is inserted into the positioning hole of the first horizontal channel steel A3 (this positioning hole can be used as the track pressure plate fixing bolt hole). Adjust the position of the first horizontal channel steel A3 according to the indication of the positioning pin C33 to complete the positioning of the TBM locomotive transport sleeper A.

[0020] Typically, the aforementioned sleeper positioning devices are installed in pairs, including a front sleeper positioning device and a rear sleeper alignment device spaced apart along the longitudinal direction of the tunnel. The two work together to position the sleepers at both ends of the track section.

[0021] The aforementioned track leveling device includes a horizontal distance plate C4, with a level indicator C41 mounted on its top and track clamps at both ends. Each track clamp includes an L-shaped clamping plate C42 integrated with the horizontal distance plate C4. The L-shaped clamping plate C42 has a vertical calibration surface that contacts the inner wall of the locomotive transport track M and a horizontal calibration surface that contacts the top wall of the locomotive transport track M. The L-shaped clamping plate C42 is also connected to an L-shaped hook plate C44 via a spring cotter pin C43. The L-shaped hook plate C44 is secured to the outer wall and lower surface of the locomotive transport track M. A hydraulic jack C45 is also installed between the horizontal distance plate C4 and the first horizontal channel steel A3.

[0022] The installation method of the eccentric transport track in a TBM tunnel according to the present invention includes the following steps: S1, based on the length of the locomotive transport track M, a sleeper positioning device is set at each of its two ends, namely the front sleeper positioning device and the rear sleeper alignment device.

[0023] S2, the positions of the TBM locomotive transport sleepers A at both ends are determined by the aforementioned sleeper positioning device. The use of the front sleeper positioning device and the rear sleeper alignment device are both carried out in the following manner: the TBM locomotive transport sleeper A is pre-installed, then the outer extension of the positioning angle plate C3 is rotated to the top of the TBM locomotive transport sleeper A, and then the positioning pin C33 is rotated so that it is inserted into the positioning hole of the first horizontal channel steel A3. The position of the first horizontal channel steel A3 is adjusted according to the indication of the positioning pin C33 to complete the positioning and fixing of the TBM locomotive transport sleeper A.

[0024] S3. Determine the number of TBM locomotive transport sleepers A based on the length of the locomotive transport track M. After the front and rear TBM locomotive transport sleepers A are installed, the intermediate TBM locomotive transport sleepers A are positioned and installed using the tensioning method.

[0025] S4. Position the locomotive transport track M (i.e. the right locomotive transport track M) corresponding to the first bracket through the vertical positioning surface C32 of the positioning angle plate C3. After the right locomotive transport track M is installed, install the left locomotive transport track M on the first horizontal channel steel A3 according to the track spacing. Finally, use the track leveling device to check its spacing and levelness.

[0026] Specifically, the horizontal spacer plate C4 is placed on both sides of the locomotive transport track M, and its levelness is checked by the level indicator C41. The gap between the locomotive transport track M and the L-shaped clamping plate C42 is checked by the degree of fit between them. If the heights of the two locomotive transport tracks M are inconsistent, the L-shaped hook plate C44 is installed on the L-shaped clamping plate C42 to fix the locomotive transport track M. Then, a hydraulic jack C45 is placed between the horizontal spacer plate C4 and the first horizontal channel steel A3 to adjust the two locomotive transport tracks M to the same height. Shims are placed under the locomotive transport track M with the lower elevation until the two locomotive transport tracks M are level.

[0027] The aforementioned track leveling device can slide along the entire length of the locomotive transport track M, facilitating the spacing and leveling verification of the entire locomotive transport track M.

[0028] S5, install inclined spacer plates D on the first brackets on the left and right sides of the TBM locomotive transport sleeper A, and install the TBM rear sleeper B according to the positioning of the inclined spacer plates D, and then install the TBM rear trolley travel track N.

[0029] S6. As the TBM advances forward, if the track extension length is insufficient, continue repeating the above steps.

[0030] It should be noted that in the description of this invention, terms such as "front," "rear," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

Claims

1. A method for installing an eccentric transport track inside a TBM tunnel, wherein the positioning of the TBM locomotive transport sleepers is achieved through an eccentric positioning device, characterized in that: The TBM locomotive transport sleeper includes a pair of first supports installed on the tunnel floor. The first supports are located on both sides of the tunnel centerline and are spaced unequally from the tunnel centerline. Each first support is composed of a first bottom support plate and a first vertical I-beam. The first vertical I-beams are connected by first horizontal channel steel. Locomotive transport tracks, which are fixed by track pressure plates and bolt assemblies, are respectively installed on the top surface of the first horizontal channel steel corresponding to the first vertical I-beams. Positioning insertion holes are also provided on the top surface of the first horizontal channel steel. The eccentric positioning device consists of a sleeper positioning device and a track leveling device. The eccentric positioning device includes a fixing component, a guide component, and a positioning angle plate. The fixing component is located at the bottom of the tunnel structure beam and extends downward. The guide component is connected to the fixing component, and a limit component is provided at the bottom of the guide component. The guide component has upper and lower positioning holes staggered in the middle. The positioning angle plate is sleeved on the guide component. A connecting pin is provided on the sleeve part of the positioning angle plate. The outer extension of the positioning angle plate has a vertical positioning surface for positioning the eccentric track, and a positioning pin is provided on the outer extension for determining the position of the sleeper. The track leveling device includes a horizontal distance plate. A level indicator is provided at the top of the horizontal distance plate. Track clamps are provided at both ends of the horizontal distance plate. A hydraulic jack is provided below the horizontal distance plate. The installation method of the locomotive transport track includes the following steps: S1, a sleeper positioning device is installed at each end of the locomotive transport track according to its length; S2. Determine the position of the TBM locomotive transport sleeper according to the sleeper positioning device: pre-install the TBM locomotive transport sleeper, then rotate the outer extension of the positioning angle plate to the top of the TBM locomotive transport sleeper, then rotate the positioning pin to insert it into the positioning hole of the first horizontal channel steel, and adjust the position of the first horizontal channel steel according to the indication of the positioning pin to complete the positioning and fixing of the TBM locomotive transport sleeper. S3. Determine the number of TBM locomotive transport sleepers based on the length of the locomotive transport track. After the TBM locomotive transport sleepers at both ends of the locomotive transport track are installed, the middle TBM locomotive transport sleepers are positioned and installed using the tensioning method. S4. The locomotive transport track is positioned near the sleeper positioning device by the vertical positioning face of the positioning angle plate. After the locomotive transport track on the right side is installed, the locomotive transport track on the other side is installed on the first horizontal channel steel according to the track spacing. Finally, the track leveling device is used to check and adjust its spacing and levelness.

2. The method for installing an eccentric transport track inside a TBM tunnel according to claim 1, characterized in that: The track clamp includes an L-shaped clamp plate integrated with the horizontal distance plate. The L-shaped clamp plate has a vertical calibration surface that contacts the inner side wall of the track and a horizontal calibration surface that contacts the top wall of the track. The L-shaped clamp plate is also connected to an L-shaped hook plate by a spring cotter pin. The L-shaped hook plate is fixed to the outer side wall and the bottom surface of the track.

3. The method for installing an eccentric transport track inside a TBM tunnel according to claim 2, characterized in that: The track leveling device adjusts the track spacing and levelness as follows: Place the horizontal spacer plate on both sides of the locomotive transport track, check its levelness with a level indicator, and check the spacing by the degree of fit between the locomotive transport track and the L-shaped clamp plate; if the heights of the locomotive transport tracks on both sides are inconsistent, install the L-shaped hook plate on the L-shaped clamp plate to fix the locomotive transport track; then, place a hydraulic jack between the horizontal spacer plate and the first horizontal channel steel, adjust the locomotive transport tracks on both sides to the same height, and place shims under the locomotive transport track with the lower elevation until the left and right locomotive transport tracks are level.

4. The method for installing an eccentric transport track inside a TBM tunnel according to claim 1, characterized in that: The TBM locomotive transport sleeper is also equipped with TBM rear-mounted sleepers on both sides. The TBM rear-mounted sleepers are symmetrically arranged along the tunnel centerline and are connected to the TBM locomotive transport sleepers through inclined spacers.

5. The method for installing an eccentric transport track inside a TBM tunnel according to claim 4, characterized in that: The TBM rear-mounted sleeper includes a second bracket installed on the tunnel floor. The second bracket is composed of a second bottom support plate, a second vertical I-beam, and a second horizontal channel steel. The top surface of the second horizontal channel steel is used to install the TBM rear-mounted trolley travel track, which is fixed by a track pressure plate and bolt assembly.

6. The method for installing an eccentric transport track inside a TBM tunnel according to claim 5, characterized in that: The inclined spacer plate includes an inclined I-beam that is welded to a second vertical I-beam at one end and to a flat end plate at the other end. A pair of clips for securing the first vertical I-beam are welded onto the flat end plate.

7. The method for installing an eccentric transport track inside a TBM tunnel according to claim 6, characterized in that: The installation method of the locomotive transport track also includes: after completing step four, installing inclined spacer plates on the first brackets on the left and right sides of the TBM locomotive transport sleeper, and installing the TBM rear sleeper according to the positioning of the inclined spacer plates, and then installing the TBM rear trolley travel track.

Images