Large-gradient inclined shaft unfavorable geology excavation supporting structure

Abstract

The utility model discloses a supporting structure for unfavorable geology excavation of a large-gradient inclined shaft, which belongs to the technical field of geological excavation supporting and comprises an inclined shaft way, a concrete support is arranged on the inner wall of the inclined shaft way, an excavation pit is arranged in an inner cavity of the inclined shaft way, and a movable support is arranged in the inner cavity of the inclined shaft way. Two movable supporting mechanisms are arranged on the movable support. According to the device, the movable support is driven to move in the inclined shaft way through cooperation of the movable wheels, the supporting base, the servo motor and the supporting frame, in addition, the electric hydraulic rod is used for driving the supporting arc-shaped plate to move outwards, and the supporting arc-shaped plate abuts against the inner wall of a dug hole; according to the large-gradient inclined shaft unfavorable geology excavation supporting structure, temporary supporting is conducted in an excavation pit through cooperation of the movable support and the supporting arc-shaped plate, drilling operation is conducted on the inner wall of the excavation pit through the inner penetrating hole and the outer penetrating hole, collapse is avoided when the excavation pit is drilled, and the practicability of the large-gradient inclined shaft unfavorable geology excavation supporting structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of geological excavation support, and more specifically, to an excavation support structure for a large-slope inclined shaft with poor geological conditions. Background Art

[0002] Inclined wells refer to wells with an inclined angle in drilling projects. The wellhead and the designed target point are not on the same plumb line, but are deviated from the wellhead vertical line by a certain distance in a given direction according to human needs. Inclined well construction is divided into excavation construction, concrete construction, and grouting construction according to the process. In the process of excavating some large-slope inclined wells, poor geological conditions are prone to occur. Poor geological conditions usually refer to the presence of fault development, rock mass fragmentation, geological changes, and large deviations between the water content and the optimal water content around the construction environment. Common unfavorable geological conditions include landslides, rock bursts, and water inrush and gushing. Therefore, it is necessary to support the large-slope inclined well during construction and excavation. Most of the existing support is to install anchor rods on the inner wall of the inclined well after excavation, then lay steel bars, and finally perform concrete grouting and spraying. In some unfavorable geological areas, drilling is required when installing anchor rods. There is a possibility of collapse during drilling, and the operation is very dangerous. For this reason, we propose a support structure for excavation of unfavorable geology in large-slope inclined wells. Utility Model Content

[0003] In view of the problems mentioned in the above background technology, the purpose of the utility model is to provide a support structure for excavation of large-slope inclined shafts with poor geological conditions.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A support structure for excavation in a steep inclined shaft with poor geological conditions, comprising an inclined shaft, an inner wall of the inclined shaft being provided with concrete support, an inner cavity of the inclined shaft being provided with an excavation pit, an inner cavity of the inclined shaft being provided with a movable bracket, two movable support mechanisms being provided on the movable bracket, a plurality of receiving grooves being provided on the outer side of the movable bracket, a plurality of electric hydraulic rods being fixedly mounted on the inner wall of the movable bracket, output ends of the plurality of electric hydraulic rods all extending to the inner cavity of the receiving grooves and being fixedly connected to a supporting arc plate, a plurality of inner through holes being provided on the outer side of the movable bracket, a plurality of outer through holes being provided on the outer side of the supporting arc plate, the plurality of inner through holes and the plurality of outer through holes being arranged concentrically, a plurality of supporting columns being fixedly connected to the end face of the movable bracket, and the top surface of the supporting columns being in contact with the inner wall of the concrete support.

[0006] As a preferred solution of the utility model, the mobile support mechanism includes a support seat fixedly connected to the inner wall of the mobile bracket, two support frames are fixedly connected to the bottom surface of the support seat, the inner side of the support frame is rotatably connected to a mobile wheel, the outer side of the support frame is fixedly installed with a servo motor, and the output shaft of the servo motor is connected to one end of the rotating shaft of the mobile wheel.

[0007] As a preferred solution of the utility model, a plurality of sealing plates are hingedly connected to the inner wall of the movable bracket and located below the inner through hole, and an avoidance hole is opened in the middle of the sealing plate.

[0008] As a preferred solution of the utility model, two handles are fixedly mounted on one end of the movable bracket, and a small door for passing through is hingedly connected to the other end of the movable bracket.

[0009] As a preferred solution of the utility model, a control panel is fixedly installed on the inner wall of the movable bracket, and the control panel is electrically connected to the electric hydraulic rod and the servo motor respectively.

[0010] As a preferred solution of the utility model, the outer side surface of the supporting arc plate is flush with the outer side surface of the movable bracket, and the outer diameter of the top of the movable bracket is equal to the inner diameter of the concrete support.

[0011] The advantages of the utility model are:

[0012] In the utility model, the cooperation of the moving wheel, the supporting seat, the servo motor and the supporting frame is utilized to drive the moving support to move in the inclined shaft. In addition, the electric hydraulic rod is utilized to drive the supporting arc plate to move outward. The supporting arc plate is utilized to abut against the inner wall of the excavated pit. The cooperation of the moving support and the supporting arc plate is utilized to provide temporary support for the excavated pit. In addition, drilling operations are performed on the inner wall of the excavated pit through the inner perforations and the outer perforations to prevent the excavated pit from collapsing when drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the mobile bracket of the utility model;

[0016] Figure 4 It is a cross-sectional schematic diagram of the mobile bracket of the utility model;

[0017] Figure 5 This is a schematic diagram of the disassembly of the mobile bracket, the sealing plate and the mobile support mechanism of the utility model;

[0018] Figure 6This is a schematic diagram of the structure of the support frame of the utility model;

[0019] Figure 7 For this utility model Figure 4 A is an enlarged schematic diagram.

[0020] Description of the numbers in the figure:

[0021] 1. Inclined shaft; 2. Concrete support; 3. Excavation pit; 4. Mobile bracket; 5. Storage slot; 6. Electric hydraulic rod; 7. Support arc plate; 8. Internal perforation; 9. External perforation; 10. Support column; 11. Closing plate; 12. Avoidance hole; 13. Support seat; 14. Moving wheel; 15. Servo motor; 16. Small door; 17. Control panel; 18. Handle; 19. Mobile support mechanism; 20. Support frame. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-7A support structure for excavation of a steep inclined shaft with poor geological conditions comprises an inclined shaft 1, the inner wall of the inclined shaft 1 is provided with a concrete support 2, the inner cavity of the inclined shaft 1 is provided with an excavation pit 3, the inner cavity of the inclined shaft 1 is provided with a movable bracket 4, two movable support mechanisms 19 are provided on the movable bracket 4, a plurality of receiving grooves 5 are provided on the outer side of the movable bracket 4, a plurality of electric hydraulic rods 6 are fixedly installed on the inner wall of the movable bracket 4, the output ends of the plurality of electric hydraulic rods 6 all extend to the inner cavity of the receiving grooves 5 and are fixedly connected with a supporting arc plate 7, a plurality of inner through holes 8 are provided on the outer side of the movable bracket 4, a plurality of outer through holes 9 are provided on the outer side of the supporting arc plate 7, the plurality of inner through holes 8 and the plurality of outer through holes 9 are concentrically arranged, a plurality of supporting columns 10 are fixedly connected to the end face of the movable bracket 4, and the top surface of the supporting column 10 is in contact with the inner wall of the concrete support 2.

[0027] For details, please refer to Figure 3 and Figure 6 The mobile support mechanism 19 includes a support seat 13 fixedly connected to the inner wall of the mobile bracket 4, two support frames 20 are fixedly connected to the bottom surface of the support seat 13, the inner side of the support frame 20 is rotatably connected to a moving wheel 14, and the outer side of the support frame 20 is fixedly installed with a servo motor 15, and the output shaft of the servo motor 15 is connected to one end of the rotating shaft of the moving wheel 14.

[0028] In this embodiment, the movable bracket 4 is supported by the movable wheel 14 , the support frame 20 and the support seat 13 , and the movable wheel 14 is driven to rotate by the servo motor 15 so as to drive the movable bracket 4 to move in the inner cavity of the inclined shaft 1 .

[0029] For details, please refer to Figure 3 and Figure 5 A plurality of sealing plates 11 are hingedly connected to the inner wall of the movable bracket 4 and located below the inner through hole 8 , and an avoidance hole 12 is opened in the middle of the sealing plate 11 .

[0030] In this embodiment, the sealing plate 11 can be hinged by a damping hinge, and the sealing plate 11 is used to block the inner through hole 8, and the avoidance hole 12 is used to avoid the electric hydraulic rod 6.

[0031] For details, please refer to Figure 3 Two handles 18 are fixedly mounted on one end of the mobile bracket 4, and a small door 16 for people to pass through is hingedly connected to the other end of the mobile bracket 4.

[0032] In this embodiment, the handle 18 is held to push the movable bracket 4 to move in the inclined shaft 1, and the small door 16 is used to enter the other side of the movable bracket 4.

[0033] For details, please refer to Figure 3 and Figure 6 A control panel 17 is fixedly mounted on the inner wall of the movable bracket 4 , and the control panel 17 is electrically connected to the electric hydraulic rod 6 and the servo motor 15 respectively.

[0034] In this embodiment, the control panel 17 is used to control the electric hydraulic rod 6 and the servo motor 15 .

[0035] For details, please refer to Figure 2 The outer side surface of the supporting arc plate 7 is flush with the outer side surface of the movable bracket 4, and the outer diameter of the top of the movable bracket 4 is equal to the inner diameter of the concrete support 2.

[0036] In this embodiment, it is ensured that the supporting arc plate 7 can be retracted into the storage groove 5 for storage, and the movable bracket 4 can move inside the concrete support 2.

[0037] Working principle: When in use, when the inclined shaft is excavated, the mobile bracket 4 is placed in the inclined shaft 1, and the mobile bracket 4 is supported by the mobile wheel 14, the support frame 20 and the support seat 13, and the servo motor 15 is started to drive the mobile wheel 14 to rotate, and the rotation of the mobile wheel 14 is used to drive the mobile bracket 4 to move to the position that needs to be supported in the excavation pit 3 inside the inclined shaft 1, and then the electric hydraulic rod 6 is started to drive the supporting arc plate 7 to move outward, so that the outer side surface of the supporting arc plate 7 and the inner wall of the excavation pit 3 are against each other, thereby supporting the inner wall of the excavation pit 3, and then the sealing plate 11 is opened to expose the inner perforation 8, and the The drill rod passes through the inner hole 8 and the outer hole 9, thereby drilling a hole on the inner wall of the excavation pit 3. After drilling, the anchor rod is inserted into the hole, and finally the servo motor 15 is started again to drive the moving wheel 14 to rotate, so that the mobile bracket 4 moves to the inside of the excavation pit 3 again. At this time, the support column 10 is moved to the top of the position that needs support in the excavation pit 3 for protection. At this time, steel bars are set up at the position that needs support in the excavation pit 3, and concrete is poured on the inner wall of the excavation pit 3, so that the excavation pit 3 is supported by concrete, and at the same time, the concrete poured in the excavation pit 3 and the concrete support 2 are connected together.

[0038] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A support structure for excavating a steeply inclined shaft in adverse geological conditions, comprising an inclined shaft (1), characterized in that: The inner wall of the inclined shaft (1) is provided with a concrete support (2), the inner cavity of the inclined shaft (1) is provided with an excavation pit (3), the inner cavity of the inclined shaft (1) is provided with a movable bracket (4), two movable support mechanisms (19) are provided on the movable bracket (4), a plurality of storage grooves (5) are provided on the outer side of the movable bracket (4), a plurality of electric hydraulic rods (6) are fixedly mounted on the inner wall of the movable bracket (4), and the transmission of the plurality of electric hydraulic rods (6) is The outlet ends extend to the inner cavity of the receiving groove (5) and are fixedly connected to a supporting arc plate (7); a plurality of inner holes (8) are opened on the outer side of the movable bracket (4); a plurality of outer holes (9) are opened on the outer side of the supporting arc plate (7); the plurality of inner holes (8) and the plurality of outer holes (9) are arranged concentrically; a plurality of supporting columns (10) are fixedly connected to the end face of the movable bracket (4); the top surface of the supporting column (10) is in contact with the inner wall of the concrete support (2).

2. The support structure for excavation of a steep inclined shaft in adverse geological conditions according to claim 1 is characterized by: The mobile support mechanism (19) comprises a support seat (13) fixedly connected to the inner wall of the mobile bracket (4); two support frames (20) are fixedly connected to the bottom surface of the support seat (13); the inner side of the support frame (20) is rotatably connected to a mobile wheel (14); the outer side of the support frame (20) is fixedly mounted with a servo motor (15); the output shaft of the servo motor (15) is connected to one end of the rotating shaft of the mobile wheel (14).

3. The support structure for excavation of a steep inclined shaft in adverse geological conditions according to claim 1 is characterized by: A plurality of sealing plates (11) are hingedly connected to the inner wall of the movable bracket (4) and located below the inner through hole (8), and a avoidance hole (12) is provided in the middle of the sealing plate (11).

4. The support structure for excavation of a steep inclined shaft in adverse geological conditions according to claim 1 is characterized by: Two handles (18) are fixedly mounted on one end of the movable bracket (4), and a small door (16) for passing through is hingedly connected to the other end of the movable bracket (4).

5. The support structure for excavation of a steep inclined shaft in adverse geological conditions according to claim 2 is characterized by: A control panel (17) is fixedly mounted on the inner wall of the movable bracket (4), and the control panel (17) is electrically connected to the electric hydraulic rod (6) and the servo motor (15) respectively.

6. The support structure for excavation of a steep inclined shaft in adverse geological conditions according to claim 1, characterized in that: The outer side surface of the supporting arc plate (7) is flush with the outer side surface of the movable bracket (4), and the outer diameter of the top of the movable bracket (4) is equal to the inner diameter of the concrete support (2).

Images