Comprehensive treatment system for large deformation of fully weathered siliceous rock tunnel

Abstract

The utility model discloses a comprehensive treatment system for large deformation of a fully weathered siliceous rock tunnel. A primary support arch frame and an inverted arch frame are connected through a special lock; the special lock comprises connecting plates, a movable truss, a telescopic rod and a feet-lock bolt, and the movable truss is arranged between the two connecting plates; the movable truss comprises two truss rods, one ends of the two truss rods are hinged, and the other ends of the two truss rods are connected with the two connecting plates respectively. The telescopic rod is arranged between the two truss rods on the movable truss, and the two ends of the telescopic rod are hinged to the two truss rods respectively; a foot-locking block is arranged on the connecting plate, and the foot-locking block on the special lock is connected with the foot-locking anchor rod; and the feet-lock bolts are inserted into surrounding rock. The pressure of the arch frame can be effectively released, fracture is avoided, the stability is enhanced, and the construction safety is improved; the risk of upheaval is reduced by the split inverted arch frame and the bottom anchor block; the adjustable sliding support trolley realizes rapid and accurate arch frame adjustment, and improves the efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of comprehensive treatment construction for large deformation of tunnels, in particular to a comprehensive treatment system for large deformation of fully weathered siliceous rock tunnels. Background Art

[0002] Traditional tunnel construction methods in complex geological conditions, such as fully weathered siliceous rock, often face numerous challenges, including long construction periods, poor adaptability to geological conditions, and difficulty ensuring construction accuracy. In such geological environments, temporary support structures are difficult to precisely adjust to the deformation of the main tunnel structure, which not only affects construction quality and safety but also significantly impacts the surrounding ecological environment. Therefore, a new construction method is urgently needed that can ensure the safety and stability of tunnel projects while being both rapid and precise.

[0003] Therefore, the utility model proposes a comprehensive treatment system for large deformation of fully weathered siliceous rock tunnels. The system combines innovative technologies such as special lock connection technology and adjustable sliding support trolleys to achieve rapid and precise tunnel construction. Summary of the Invention

[0004] The purpose of the utility model is to provide a comprehensive treatment system and construction method for large deformation of fully weathered siliceous rock tunnels in response to the above-mentioned problems existing in the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: a comprehensive treatment system for large deformation of a fully weathered siliceous rock tunnel, a primary support arch frame, an inverted arch frame, a top reinforcement arch frame, a side reinforcement arch frame, a temporary inverted arch frame, a special lock, and an adjustable sliding support trolley; the primary support arch frame and the inverted arch frame are connected by a special lock; the special lock includes a connecting plate, a movable truss, a telescopic rod, and a locking foot anchor rod, two connecting plates are provided, and the movable truss is provided between the two connecting plates; the movable truss includes two truss rods, one end of the two truss rods is hinged, and the two trusses The other end of the frame rod is connected to two connecting plates respectively; the telescopic rod is arranged between the two truss rods on the movable truss, and the two ends of the telescopic rod are hinged to the two truss rods respectively; the primary support arch frame and the inverted arch frame are respectively connected to the connecting plates of the special lock; the connecting plates are provided with locking foot blocks, and the locking foot blocks on the special locks are connected to the locking foot anchor rods; the locking foot anchor rods are inserted into the surrounding rock; the adjustable sliding support trolley is used to support the top reinforcement arch frame and the side reinforcement arch frame, the top reinforcement arch frame supports the top of the primary support arch frame, and the side reinforcement arch frame supports the sides of the primary support arch frame.

[0006] As preferred, the inverted arch frame comprises two parts of a left segment and a right segment, and the left segment and the right segment are connected through a first joint; the bottom anchor block is installed below the first joint on the inverted arch frame, the bottom anchor block is provided with a bottom anchor rod at a lower end, the bottom anchor rod is fixed to the bottom of the surrounding rock, and the bottom anchor block is connected with the inverted arch frame through a connecting piece.

[0007] As preferred, the temporary inverted arch frame is supported on the upper step and the middle step of the tunnel excavation, the temporary inverted arch frame comprises two inverted arch frame units, a middle shaft steel frame and a second joint, the middle shaft steel frame is perpendicular to the middle axis of the tunnel excavation, the middle shaft steel frame is located between the two inverted arch frame units, and the two sides of the middle shaft steel frame are respectively provided with the second joint, and the two sides of the second joint are respectively connected with the two inverted arch frame units.

[0008] As preferred, the adjustable sliding support trolley comprises a top frame, a vertical frame, a sliding bottom frame, a sliding inclined rod, an inner support rod and a hydraulic rod, the sliding bottom frame is provided with a sliding horizontal shaft, the vertical frame is arranged on the sliding horizontal shaft, the vertical frame can move horizontally relative to the sliding horizontal shaft, one end of the sliding inclined rod is connected with the vertical frame, the other end of the sliding inclined rod is provided with a sliding block, the sliding block is arranged on the sliding horizontal shaft, and the sliding block is in sliding fit with the sliding horizontal shaft; the top frame is installed at the upper end of the vertical frame; the upper end of the top frame is provided with the hydraulic rod, the top frame is supported by the hydraulic rod, the outer side of the vertical frame is provided with a rear horizontal rod, and the vertical frame is supported by the rear horizontal rod.

[0009] As preferred, an inner support assembly is arranged between the two vertical frames, the inner support assembly comprises two inner support rods, one end of each of the two inner support rods is hingedly connected with the two vertical frames, and the other ends of the two inner support rods are connected through a connecting rod, and the inner support rod is hingedly connected with the connecting rod.

[0010] As preferred, the top frame is a telescopic plate and can be telescoped.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model discloses a special lock is connected with the initial support arch frame and the inverted arch frame, and the design of the movable truss and the telescopic rod, which can release the arch frame pressure when the surrounding rock deforms, effectively avoid the arch frame fracture, thereby significantly improving the construction safety.

[0013] 2. The split design of the inverted arch frame and the application of the bottom anchor block enhance the connection stability of the arch frame and the surrounding rock and reduce the risk of tunnel inverted arch uplift.

[0014] 3. The temporary inverted arch frame and the reinforced arch frame are supported by the adjustable sliding support trolley, which realizes the rapid adjustment and accurate positioning of the arch frame, improves the construction efficiency and shortens the construction period.

[0015] 4. The design of the special lock and adjustable sliding support trolley makes the support system flexible to adapt to geological changes, provides more accurate and dynamic support, and ensures adaptability and flexibility during construction.

[0016] 5. The temporary inverted arch support only supports the half-section adaptability of the upper step and the middle step, reducing the support cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used for the embodiment description. Obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 It is a full-weathered siliceous rock tunnel large deformation comprehensive treatment cross section schematic diagram of the present application;

[0019] Figure 2 It is a top reinforcing arch support and side reinforcing arch support installation state cross section schematic diagram;

[0020] Figure 3 It is a temporary inverted arch support cross section schematic diagram;

[0021] Figure 4 It is a temporary inverted arch support longitudinal section schematic diagram;

[0022] Figure 5 It is a special lock structure schematic diagram;

[0023] In the drawings, the component list represented by each reference numeral is as follows:

[0024] In the drawings, the component list represented by each reference numeral is as follows: DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0026] Those skilled in the art should understand that, in the disclosure of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0027] Embodiment 1

[0028] Please refer to Figure 1-5 In the present embodiment, a comprehensive treatment system for a fully weathered siliceous rock tunnel with large deformation is provided, including surrounding rock 1, working face 11, primary support arch 2, inverted arch arch 3, inverted arch backfill 4, secondary lining 30, locking anchor 7, temporary steel arch, top reinforcing arch 5, side reinforcing arch 6.

[0029] The primary support arch 2 and the inverted arch arch 3 are connected by a special lock, which includes a connecting plate 13, a movable truss 14, an extension rod 15 and a locking anchor 7. The connecting plate 13 is provided with two connecting plates 13, and the movable truss 14 is arranged between the two connecting plates 13. The movable truss 14 includes two truss rods, one end of the two truss rods is hinged, and the other end of the two truss rods is connected with the two connecting plates 13 respectively. The extension rod 15 is arranged between the two truss rods of the movable truss 14, and the two ends of the extension rod are hinged with the two truss rods respectively. The primary support arch 2 and the inverted arch arch 3 are connected on the connecting plate 13 of the special lock, and the connection between the primary support arch 2 and the inverted arch arch 3 is realized by the special lock. The connecting plate 13 is provided with a locking block 12, and the locking block 12 on the special lock is connected with the locking anchor 7; the locking anchor 7 is inserted into the surrounding rock 1. In the specific supporting process, with the deformation of the tunnel surrounding rock 1, the movable truss 14 and the extension rod 15 move with the deformation of the primary support arch 2 and the inverted arch arch 3, so as to release the pressure of the arch within the controllable range and avoid the fracture of the arch.

[0030] The inverted arch frame 3 includes a left section and a right section, which are connected by a first joint. The inverted arch frame 3 is fixed by a bottom anchor block 16, which is installed below the first joint on the inverted arch frame 3. The lower end of the bottom anchor block 16 is provided with a bottom anchor rod 17, which is driven and fixed to the bottom of the surrounding rock 1. The bottom anchor block 16 and the inverted arch frame 3 are connected by a connecting piece 18.

[0031] The temporary inverted arch frame 10 is supported on the upper step 8 and the middle step 9 of the tunnel excavation. The temporary inverted arch frame 10 includes two inverted arch frame units, a central axis steel frame 31, and a second joint 32. The central axis steel frame 31 is perpendicular to the central axis of the tunnel excavation and is located between the two inverted arch frame units. Second joints 32 are respectively provided on both sides of the central axis steel frame 31, and the second joints 32 on both sides are respectively connected to the two inverted arch frame units; one end of the temporary inverted arch frame 10 extends into the tunnel face 11 to be excavated, and the other end is located at the half-width section of the step.

[0032] The top reinforcement arch frame 5 and the side reinforcement arch frame 6 are temporary reinforcement arch frames, which are supported by an adjustable sliding support trolley. The adjustable sliding support trolley includes a top frame 23, a vertical frame 24, a sliding bottom frame 19, a sliding diagonal rod 22, an inner support rod 25, and a hydraulic rod 27. The sliding bottom frame 19 is arranged on the inverted arch backfill 4. A sliding transverse shaft 20 is installed on the sliding bottom frame 19, and the sliding transverse shaft 20 serves as a transverse track; the vertical frame 24 is arranged on the sliding transverse shaft 20, and the vertical frame 24 can move laterally relative to the sliding transverse shaft 20. One end of the sliding diagonal rod 22 is connected to the vertical frame 24, and the other end of the sliding diagonal rod 22 is provided with a sliding block 21. The sliding block 21 is arranged on the sliding horizontal axis 20, and the sliding block 21 and the sliding horizontal axis 20 are slidably matched; the sliding diagonal rod 22 uses the sliding block 21 to move horizontally, and an internal support assembly is provided between the vertical frames 24 on both sides, and the internal support assembly includes two internal support rods 25, one end of the two internal support rods 25 is hinged to the two vertical frames 24 respectively, and the other ends of the two internal support rods 25 are connected by a connecting rod 26, and the internal support rods 25 are hinged to the connecting rod 26; during the horizontal sliding process of the vertical frame 24, the internal support rods 25 change angles relative to the connecting rod 26 and extend and retract, and the above operation realizes the horizontal extension and retraction of the adjustable sliding support trolley. The top frame 23 is installed at the upper end of the vertical frame 24. The top frame 23 is a telescopic plate that can be extended and retracted. Furthermore, a hydraulic rod 27 is provided at the upper end of the top frame 23, and the hydraulic rod 27 is used to support the top reinforcement arch frame 5; a rear cross bar 28 is provided on the outer side of the vertical frame 24, and the side reinforcement arch frame 6 is supported by the rear cross bar 28; the rear cross bar 28 is supported by the rear support rod 29.

[0033] The top reinforcement arch 5 supports the top of the primary support arch 2 , and the side reinforcement arch 6 supports the sides of the primary support arch 2 .

[0034] Example 2

[0035] The embodiment provides a construction method of a full-weathered siliceous rock tunnel large deformation comprehensive treatment system, and specifically comprises the following steps.

[0036] Step one: surrounding rock 1 and working face 11 pretreatment;

[0037] Stability evaluation of surrounding rock 1: before construction, the full-weathered siliceous rock surrounding rock 1 is subjected to detailed geomechanical evaluation, and the stability and deformation potential of the surrounding rock 1 are determined.

[0038] Advanced support of working face 11: the advanced small guide pipe or advanced anchor rod is pre-supported in front of the tunnel working face 11, so as to enhance the stability of the surrounding rock 1 in front of the working face 11.

[0039] Step two: installation of primary support arch 2 and inverted arch arch 3; the primary support arch 2 is installed first, so as to provide temporary support for the surrounding rock 1; then the inverted arch arch 3 is installed, the inverted arch arch 3 comprises left and right segments, the left and right segments are installed at the bottom of the surrounding rock 1, and the left and right segments are connected through the first joint; the inverted arch arch 3 is fixed by using the bottom anchor block 16, the bottom anchor block 16 is installed below the first joint on the inverted arch arch 3, the bottom end of the bottom anchor block 16 is provided with the bottom anchor rod 17, the bottom anchor rod 17 is fixedly arranged at the bottom of the surrounding rock 1, and the bottom anchor block 16 and the inverted arch arch 3 are connected through the connecting piece 18; the inverted arch backfill 4 is constructed on the inverted arch arch;

[0040] The primary support arch 2 and the inverted arch arch 3 are connected by using the special lock; the lock foot anchor rod 7 is punched into the surrounding rock 1, and the upper lock block 12 of the special lock is connected with the lock foot anchor rod 7.

[0041] Step three: temporary inverted arch support 10 is provided for the upper step 8 and the middle step 9 of the tunnel excavation; the temporary inverted arch support 10 comprises two inverted arch units, a middle shaft steel frame 31 and a second joint 32, the middle shaft steel frame 31 is perpendicular to the middle shaft line of the tunnel excavation, the middle shaft steel frame 31 is installed between the two inverted arch units, the two sides of the middle shaft steel frame 31 are respectively provided with the second joint 32, and the two sides of the second joint 32 are respectively connected with the two inverted arch units; one end of the temporary inverted arch support 10 extends into the working face 11 to be excavated, and the other end is located at the half-width section of the step.

[0042] Step four: installation and temporary support of the top reinforcing arch 5 and the side reinforcing arch 6; first, an adjustable sliding support trolley is installed, the top reinforcing arch 5 and the side reinforcing arch 6 are supported by the adjustable sliding support trolley, the top reinforcing arch 5 supports the top of the primary support arch 2, and the side reinforcing arch 6 supports the side of the primary support arch 2; the top reinforcing arch 5 and the side reinforcing arch 6 form a temporary reinforcing arch, which is used for enhancing the stability of the tunnel.

[0043] The full-weathered siliceous rock tunnel large deformation comprehensive treatment system is obtained by the construction method of the full-weathered siliceous rock tunnel large deformation comprehensive treatment system.

[0044] The parts not described in detail in this utility model are prior art, so this utility model does not describe them in detail.

[0045] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0046] Although this article uses a lot of professional terms, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

[0047] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any product with the same or similar technical solutions as the present invention falls within the scope of protection of the present invention.

Claims

1. Comprehensive treatment system for large deformation of fully weathered siliceous rock tunnels, characterized by: The primary support arch frame (2), the inverted arch frame (3), the top reinforcement arch frame (5), the side reinforcement arch frame (6), the temporary inverted arch frame (10), a special lock, and an adjustable sliding support trolley; the primary support arch frame (2) and the inverted arch frame (3) are connected by a special lock; the special lock includes a connecting plate (13), a movable truss (14), a telescopic rod (15), and a locking foot anchor rod (7); two connecting plates (13) are provided, and the movable truss (14) is provided between the two connecting plates (13); the movable truss (14) includes two truss rods , one end of the two truss rods is hinged, and the other ends of the two truss rods are respectively connected to two connecting plates (13); a telescopic rod (15) is arranged between the two truss rods on the movable truss (14), and the two ends of the telescopic rod are respectively hinged to the two truss rods; the primary arch frame (2) and the inverted arch frame (3) are respectively connected to the connecting plate (13) of the special lock; a locking foot block (12) is provided on the connecting plate (13), and the locking foot block (12) on the special lock is connected to the locking foot anchor rod (7); the locking foot anchor rod (7) is inserted into the surrounding rock (1); The adjustable sliding support trolley is used to support the top reinforcement arch frame (5) and the side reinforcement arch frame (6); the top reinforcement arch frame (5) supports the top of the primary support arch frame (2); and the side reinforcement arch frame (6) supports the side of the primary support arch frame (2).

2. The comprehensive treatment system for large deformation of fully weathered siliceous rock tunnels according to claim 1 is characterized in that: The inverted arch frame (3) comprises a left section and a right section, and the left section and the right section are connected via a first joint; a bottom anchor block (16) is installed below the first joint on the inverted arch frame (3); a bottom anchor rod (17) is provided at the lower end of the bottom anchor block (16); the bottom anchor rod (17) is driven and fixed to the bottom of the surrounding rock (1); and the bottom anchor block (16) and the inverted arch frame (3) are connected via a connecting piece (18).

3. The comprehensive treatment system for large deformation of fully weathered siliceous rock tunnels according to claim 1 is characterized in that: A temporary inverted arch frame (10) is supported on an upper step (8) and a middle step (9) of a tunnel excavation. The temporary inverted arch frame (10) comprises two inverted arch frame units, a central axis steel frame (31), and a second joint (32). The central axis steel frame (31) is perpendicular to the central axis of the tunnel excavation. The central axis steel frame (31) is located between the two inverted arch frame units. Second joints (32) are respectively provided on both sides of the central axis steel frame (31). The second joints (32) on both sides are respectively connected to the two inverted arch frame units.

4. The comprehensive treatment system for large deformation of fully weathered siliceous rock tunnels according to claim 1 is characterized in that: The adjustable sliding support trolley comprises a top frame (23), a vertical frame (24), a sliding bottom frame (19), a sliding inclined rod (22), an inner support rod (25), and a hydraulic rod (27). A sliding transverse shaft (20) is installed on the sliding bottom frame (19). The vertical frame (24) is arranged on the sliding transverse shaft (20). The vertical frame (24) can move transversely relative to the sliding transverse shaft (20). One end of the sliding inclined rod (22) is connected to the vertical frame (24). The other end of the sliding inclined rod (22) is connected to the vertical frame (24). The end is provided with a sliding block (21), which is arranged on the sliding transverse axis (20), and the sliding block (21) and the sliding transverse axis (20) are slidably matched; the top frame (23) is installed on the upper end of the vertical frame (24); the upper end of the top frame (23) is provided with a hydraulic rod (27), and the hydraulic rod (27) is used to support the top reinforcement arch frame (5); the outer side of the vertical frame (24) is provided with a rear cross bar (28), and the side reinforcement arch frame (6) is supported by the rear cross bar (28).

5. The comprehensive treatment system for large deformation of fully weathered siliceous rock tunnels according to claim 4 is characterized in that: An inner support assembly is provided between the vertical frames (24) on both sides. The inner support assembly includes two inner support rods (25). One end of the two inner support rods (25) is hinged to the two vertical frames (24) respectively. The other ends of the two inner support rods (25) are connected by a connecting rod (26). The inner support rods (25) are hinged to the connecting rod (26).

6. The comprehensive treatment system for large deformation of fully weathered siliceous rock tunnels according to claim 4 is characterized in that: The top frame (23) is a telescopic plate and can be telescoped.

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