Strongly weathered mudstone deep cutting slope drainage structure and construction method and construction device

Abstract

The present invention provides a drainage structure and construction method and device for the side slope of a deep road cut of strongly weathered mudstone, including a plurality of main drainage ditches along the side slope, a plurality of horizontal drainage pipes pre-buried under the slope surface connected to the main drainage ditches, one end of the horizontal drainage pipe connected to the main drainage ditch has a lower elevation, and the other end of the horizontal drainage pipe away from the main drainage ditch has a higher elevation; the horizontal drainage pipe is provided with a plurality of holes for water inlet; the horizontal drainage pipe is arc-shaped. A slope grooving machine is provided with a sawing saw blade for sawing both sides of the horizontal pipe groove; a turntable is also provided, the turntable is hinged with a pendulum, and the pendulum is used to pass through the working groove to knock the slope surface. By adopting the scheme of burying a tree-like drainage structure and cooperating with other slope treatment measures, such as hanging net spraying, frame beams and other measures, it is possible to intercept and discharge the seepage water that penetrates into the slope surface, greatly reduce the damage of the seepage water to the strongly weathered sandstone and mudstone, ensure the stability of the bedrock, and greatly reduce the probability of landslides.

Description

Technical Field

[0001] The invention relates to the field of highway slope drainage construction, in particular to a strongly weathered mudstone deep cutting slope drainage structure and a construction method and a construction device. Background Art

[0002] The geological structure of a highway slope is as follows: silty clay on the surface; interlayers of strongly weathered sandstone and mudstone on the upper layer, the rock mass is extremely broken and is soft rock; interlayers of moderately weathered sandstone and mudstone on the lower layer, the sandstone is hard, the mudstone is soft, it is easy to soften after soaking in water, and it is easy to collapse after drying, the rock mass is relatively broken and is soft rock. Mudstone is easy to soften when soaked in water, and its shear strength drops sharply, making it very easy for the slope to deform and slide along this weak layer. Therefore, the bedrock fissure water stabilizes the slope during rainfall. The height difference from the top of the slope to the bottom of the slope reaches 77 meters. Due to the extremely poor geological conditions, the surface of the slope is prone to instability, and the excavation construction process is prone to cause the overall instability of the slope. The anti-slip pile well blasting is also prone to cause the slope to be unstable. In addition, the slope is high, and it is difficult for large-scale construction equipment to enter the site, especially the large-scale anti-slip pile construction equipment is difficult to set up, and the on-site construction is extremely difficult. In order to avoid slope slippage, it is beneficial to reduce the penetration of precipitation into strongly weathered sandstone mudstone. The drainage construction in the prior art is to pre-bury the PVC pipes arranged in an array into the slope surface, and the pipe mouth of the PVC pipe is exposed. The problem is that the pre-buried PVC pipes need to be punched, which is difficult to construct on a steep slope of 1:1, and it is difficult to drain all the surrounding infiltrated water. For example, Chinese patent document CN103410159A records an expansive soil road cut slope support structure and its construction method, that is, a structure for setting a drainage pipe is proposed, but the surface water that infiltrates into the slope surface is difficult to be discharged. CN 111549799 A records a comprehensive prevention and control system for gravel soil slopes, which proposes to set a torrent drainage pipe along the slope direction, which can increase the drainage rate of the infiltrated water, and also increase the drainage rate of the infiltrated water by setting a concentrated seepage area and a deep drainage pipe. The problem is that the drainage range of the torrent drainage pipe is small, and it is difficult to solve the drainage problem of the entire slope. The concentrated seepage zone can easily cause water in the area to seep deeper into the slope, leading to landslides. In addition, deep drainage pipes located on the slope are also difficult to construct. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a drainage structure and construction method and device for a deep road cutting slope of strongly weathered mudstone, which can improve the drainage effect of the slope and prevent mudstone sliding caused by water infiltration. It can simplify the construction difficulty, especially the difficulty of construction on a 1:1 slope, and improve the construction efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a strongly weathered mudstone deep cutting slope drainage structure, comprising a plurality of main drainage ditches along the slope, a plurality of horizontal drainage pipes pre-buried under the slope surface connected to the main drainage ditches, one end of the horizontal drainage pipe connected to the main drainage ditch has a lower elevation, and the other end of the horizontal drainage pipe away from the main drainage ditch has a higher elevation;

[0005] The horizontal drain pipe is provided with a plurality of holes for water inlet;

[0006] The horizontal drain pipe is arc-shaped.

[0007] In a preferred solution, a porous gravel layer is provided on the outer wall of the pipe body of the horizontal drainage pipe, and a permeable geotextile layer is provided on the outer wall of the porous gravel layer.

[0008] In a preferred embodiment, the porous crushed stone layer is porous concrete in the shape of segmented annular cylinders.

[0009] In a preferred solution, outside the porous crushed stone layer, a permeable geotextile layer is spirally wrapped around the porous crushed stone layer.

[0010] In a preferred solution, the slope is provided with a plurality of horizontally arranged drainage ditches from top to bottom, and the main drainage ditch is connected to the horizontally arranged drainage ditches.

[0011] A construction method of the above-mentioned strongly weathered mudstone deep cutting slope drainage structure comprises the following steps:

[0012] S1. When laying horizontal drainage pipes, first construct the horizontal pipe trench;

[0013] S2. A winch device is set at the top of the slope, and the slope slotting machine is lowered to the position of the horizontal pipe slot by the winch device;

[0014] S3, the slope slotting machine uses the winch device as the center to construct the horizontal pipe slot;

[0015] S4. Excavate the main drainage trench foundation along the slope;

[0016] S5. bury a horizontal drainage pipe in the horizontal pipe trench, and connect the end of the horizontal drainage pipe to the foundation of the main drainage trench;

[0017] S6. Construct the main drainage channel concrete structure;

[0018] The above steps are used to realize the construction of slope drainage structure.

[0019] In the preferred solution, the horizontal drainage pipe is penetrated into the porous gravel layer before construction, and a permeable geotextile layer is wrapped around the porous gravel layer;

[0020] After the horizontal drainage pipe is laid in the horizontal pipe trench, the horizontal pipe trench is filled with gravel with a particle size of more than 0.5 cm.

[0021] A construction device for the above-mentioned strongly weathered mudstone deep cutting slope drainage structure includes a slope slotting machine, the structure of the slope slotting machine is as follows: a vehicle body is provided with running wheels, two sides of the vehicle body are provided with hanging ears, the front end of the vehicle body is provided with a front traction ear, and the rear end of the vehicle body is provided with a rear traction ear;

[0022] A working groove is provided in the middle of the vehicle body, and two sawing groove saw blades are supported at one end of the working groove. The motor drives the sawing groove saw blades to rotate through the transmission mechanism. The sawing groove saw blades penetrate into the working groove and are used to saw the two sides of the horizontal pipe groove.

[0023] A turntable is supported at the other end of the working groove. The motor drives the turntable to rotate through a transmission mechanism. A plurality of pins are provided on the edge of the turntable. The pins are hinged to a pendulum, which is used to pass through the working groove and strike the slope.

[0024] In a preferred solution, the rotating disk is arranged in multiple numbers along the axial direction, and a cavity for accommodating the pendulum is provided at the edge of the rotating disk;

[0025] The pendulum is located between the two saw blades.

[0026] In the preferred solution, a winch device is further provided, the winch device is used to be arranged at the top of the slope, the winch device is fixed or arranged on the limit guide rail, and the wire rope of the winch device is used to connect the suspension lug of the body of the slope slotting machine;

[0027] The drum of the winch device is connected to the fixed friction plate, the movable friction plate is connected to the shaft through a spline structure, the shaft is connected to the worm gear structure, and the worm gear is connected to the winch motor through an elastic coupling;

[0028] The moving friction plate is also connected to a magnetic control device, which is used to control the moving friction plate to slide along the shaft;

[0029] A detachably connected friction transmission structure is formed between the moving friction plate and the fixed friction plate.

[0030] The present invention provides a drainage structure, construction method, and construction device for the side slope of a strongly weathered mudstone deep road cut. By adopting a scheme of burying a tree-like drainage structure and coordinating with other slope treatment measures, such as hanging net spraying and frame beams, the seepage water that penetrates into the slope can be intercepted and discharged, greatly reducing the damage of the seepage water to the strongly weathered sandstone and mudstone, ensuring the stability of the bedrock, and greatly reducing the probability of landslides. The structure of a porous crushed stone layer and a permeable geotextile layer can prevent the holes of the pipe body of the horizontal drainage pipe from being blocked, and the porous crushed stone layer adopts a segmented pipe body structure, which is also convenient for the installation and laying of the horizontal drainage pipe. The slope grooving machine used can conveniently excavate horizontal pipe grooves on the slope, with high efficiency, high safety, and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0032] Figure 1 It is a front view of the slope surface of the present invention.

[0033] Figure 2 It is a schematic diagram of the cross-sectional structure of the slope of the present invention.

[0034] Figure 3 It is a schematic structural diagram of the hoisting device of the present invention.

[0035] Figure 4 It is a top view of the slope grooving machine of the present invention.

[0036] Figure 5 It is a front view of the slope grooving machine of the present invention.

[0037] Figure 6 It is a schematic cross-sectional view of the horizontal drainage pipe in the present invention.

[0038] In the figure: slope 1, frame beam 2, anti-sliding pile 3, slope slotting machine 4, vehicle body 401, travel wheel 402, wheel axle 403, transmission mechanism 404, suspension eye 405, rear traction eye 406, front traction eye 407, travel motor 408, sawing saw blade 409, slot cleaning hammer 410, hammer motor 411, sawing motor 412, turntable 413, pendulum 414, working groove 415, prestressed anchor cable 5, anchor rod 6, platform 7, inclinometer tube 8, roll Lifting device 9, magnetic control device 91, dynamic friction plate 92, fixed friction plate 93, drum 94, wire rope 95, worm gear 96, worm 97, elastic coupling 98, winch motor 99, drainage structure 10, horizontal drainage pipe 101, pipe body 1011, porous gravel layer 1012, permeable geotextile layer 1013, main drainage trough 102, horizontal pipe trough 103, bottom drainage ditch 11, top drainage ditch 12, platform drainage ditch 13, guide wheel 14, and limiting guide rail 15. DETAILED DESCRIPTION

[0039] Embodiment 1:

[0040] like Figure 1In the present invention, a drainage structure for the side slope of a strongly weathered mudstone deep road cut includes a plurality of main drainage ditches 102 along the side slope 1, a plurality of horizontal drainage pipes 101 pre-buried under the slope surface are connected to the main drainage ditches 102, one end of the horizontal drainage pipe 101 connected to the main drainage ditch 102 has a lower elevation, and the other end of the horizontal drainage pipe 101 away from the main drainage ditch 102 has a higher elevation; the horizontal drainage pipe 101 in this example refers to a drainage pipe that is roughly horizontal, which is relative to the main drainage ditch 102 along the slope direction. The horizontal drainage pipe 101 is provided with a plurality of holes for water inlet; with this structure, the slope seepage water is collected through the horizontal drainage pipe 101, and discharged from the horizontal drainage pipe 101 into the main drainage trough 102, so that the slope seepage water is quickly discharged to prevent the slope seepage water from causing the strongly weathered mudstone sandstone to slip. After testing, the drainage structure of the present invention effectively overcomes the construction difficulties of the strongly weathered sandstone mudstone interlayer structure.

[0041] The horizontal drainage pipe 101 is arc-shaped. With this structure, it is convenient to use the slope surface grooving machine 4 lowered from the slope 1 for construction without the need for personnel to dig on the slope surface, which greatly reduces the construction risk and improves the construction efficiency.

[0042] The preferred solution is Figure 6 In the embodiment, the outer wall of the pipe body 1011 of the horizontal drainage pipe 101 is provided with a porous gravel layer 1012, and the outer wall of the porous gravel layer 1012 is provided with a permeable geotextile layer 1013. The material of the pipe body 1011 is PVC.

[0043] In the preferred solution, the porous gravel layer 1012 is a segmented annular cylindrical porous concrete. During the experiment, the solution of laying the horizontal drainage pipe 101 directly in the gravel was adopted, but in the actual construction process, it was found that the elevation position of the horizontal drainage pipe 101 was difficult to control, that is, the horizontal drainage pipe 101 was uneven and unevenly stressed, which affected the final drainage effect.

[0044] In a preferred solution, outside the porous gravel layer 1012 , a permeable geotextile layer 1013 is spirally wrapped around the porous gravel layer 1012 .

[0045] In the preferred solution, the slope 1 is provided with a plurality of horizontally arranged drainage ditches from top to bottom, such as the top drainage ditch 12, the platform drainage ditch 13 and the bottom drainage ditch 11, and the main drainage ditch 102 is connected with the horizontally arranged drainage ditch. Thus, a complete drainage system is formed. The comprehensive management of the perfect drainage system, support system and vegetation system can effectively solve the technical problem of supporting the slope of the deep road cutting of strongly weathered mudstone.

[0046] Embodiment 2:

[0047] like Figure 1 , 2A construction method of the above-mentioned strongly weathered mudstone deep cutting slope drainage structure comprises the following steps:

[0048] S1. When laying the horizontal drainage pipe 101, first construct the horizontal pipe trench 103;

[0049] S2. A hoisting device 9 is set at the top of the slope 1, and the slope slotting machine 4 is lowered to the position of constructing the horizontal pipe groove 103 by using the hoisting device 9; preferably, the position where the hoisting device 9 is set is preferably away from the first-level slope surface to ensure the straightness of the horizontal pipe groove. For example, if the horizontal pipe groove 103 is constructed on the first-level slope surface, the hoisting device 9 is set on the third-level slope surface.

[0050] S3. The slope grooving machine 4 constructs the horizontal pipe groove 103 with the winch device 9 as the center. Preferably, the front section of the wire rope remains stationary during the construction process, and the wire rope is lowered at the rear section to make the horizontal pipe groove 103 have a certain inclination angle; preferably, when located on the top slope, the winch device 9 is set on the limiting guide rail 15. During construction, the winch device 9 is translated along the limiting guide rail 15 and the wire rope 95 is continuously lowered.

[0051] S4, excavating the drainage main trough foundation along the slope; the drainage main trough excavation can also be carried out by using the slope grooving machine 4 of the present invention for multiple times. The wire rope 95 is pulled on the rear traction lug 406 of the slope grooving machine 4, and the large-diameter sawing saw blade 409 and the groove cleaning hammer 410 are replaced. The drainage main trough foundation can be quickly excavated by sliding down along the drainage main trough 102 for multiple times, without the need to drive the excavator to the platform position for construction, thereby avoiding slope landslides caused by construction disturbance.

[0052] S5, burying the horizontal drainage pipe 101 in the horizontal pipe groove 103, and connecting the end of the horizontal drainage pipe 101 to the foundation of the main drainage groove;

[0053] In a preferred solution, the horizontal drainage pipe 101 is penetrated into the porous gravel layer 1012 before construction, and a permeable geotextile layer 1013 is wrapped around the porous gravel layer 1012;

[0054] After the horizontal drainage pipe 101 is laid in the horizontal pipe groove 103 , the horizontal pipe groove 103 is filled with crushed stones with a particle size of more than 0.5 cm.

[0055] S6. Construct the main drainage trough concrete structure. When the main drainage trough concrete is erected, it is necessary to ensure that the horizontal drainage pipe 101 passes through the inner mold template and the pipe opening of the horizontal drainage pipe 101 is blocked to prevent the concrete from blocking the horizontal drainage pipe 101.

[0056] The above steps are used to realize the construction of slope drainage structure.

[0057] Embodiment 3:

[0058] like Figure 4 , 5 In the present invention, a construction device for the above-mentioned strongly weathered mudstone deep cutting slope drainage structure includes a slope slotting machine 4. The structure of the slope slotting machine 4 is as follows: a vehicle body 401 is provided with a walking wheel 402. Preferably, the surface of the walking wheel 402 is provided with a plurality of teeth to facilitate self-walking on the slope. The walking wheel 402 is connected to a walking motor 408 through a transmission mechanism 404. The control of the walking motor 408 and other motors is controlled by a control signal line of a cable or by remote control. The transmission mechanism 404 in this example preferably adopts a chain transmission mechanism.

[0059] Suspension lugs 405 are provided on both sides of the vehicle body 401, a front traction lug 407 is provided at the front end of the vehicle body 401, and a rear traction lug 406 is provided at the rear end of the vehicle body 401; the suspension lugs 405 are used to connect to the hoisting device 9 located at the top of the slope 1, and the front traction lugs 407 and the rear traction lugs 406 are used for auxiliary traction. The rear traction lugs 406 are also used to connect to the hoisting device 9 during the construction of the main drainage channel 102.

[0060] A working groove 415 is provided in the middle of the vehicle body 401. Two sawing blades 409 are supported at one end of the working groove 415. The motor drives the sawing blades 409 to rotate through a transmission mechanism. Preferably, an independent sawing motor 412 is used for driving. The sawing blades 409 penetrate into the working groove 415 to saw the two sides of the horizontal pipe groove 103.

[0061] The other end of the working slot 415 supports a turntable 413 , and the motor drives the turntable 413 to rotate through a transmission mechanism. Preferably, an independent hammer motor 411 is used to drive the turntable 413 to rotate.

[0062] A plurality of pins are provided on the edge of the rotating disk, and the pins are hinged with the pendulum 414, and the pendulum 414 is used to strike the slope through the working slot 415. Preferably, an elastic coupling is provided on the output shaft of the hammer motor 411 to buffer the impact of the pendulum 414 on the rotating disk 413.

[0063] In a preferred solution, the turntable 413 is arranged in plurality along the axial direction, and a cavity for accommodating the pendulum 414 is provided at the edge of the turntable 413; preferably, on each turntable 413, the number of the pendulums 414 is no more than four, and they are evenly distributed along the circumference.

[0064] The pendulum 414 is located between the two saw blades 409. The pendulum 414 is used to hammer the cut slope surface under the action of centrifugal force to break the strongly weathered rock mass in the horizontal pipe groove 103 to form gravel, which is convenient for the subsequent laying of the horizontal drainage pipe 101.

[0065] In the preferred solution, a hoisting device 9 is further provided, and the hoisting device 9 is used to be arranged at the top of the slope 1, and the hoisting device 9 is fixed or arranged on the limiting guide rail 15, and the wire rope 95 of the hoisting device 9 is used to connect the suspension lug 405 of the body 401 of the slope slotting machine 4;

[0066] The reel 94 of the hoisting device 9 is connected to the fixed friction plate 93, the movable friction plate 92 is connected to the shaft through a spline structure, the shaft is connected to the worm gear structure, and the worm gear is connected to the hoisting motor 99 through an elastic coupling 98;

[0067] The moving friction plate 92 is also connected to the magnetic control device 91, and the magnetic control device 91 is used to control the moving friction plate 92 to slide along the shaft;

[0068] The movable friction plate 92 and the fixed friction plate 93 form a friction transmission structure that can be disconnected. Preferably, the movable friction plate 92 and the fixed friction plate 93 are in contact with each other under normal conditions, and friction transmission can be achieved. The magnetic control device 91 is similar to a large electromagnet. By inching, the wire rope can be quickly lowered, and the control is more convenient. The worm gear structure has a relatively large transmission and can achieve self-locking, which can effectively fix the slope slotting machine 4.

[0069] When in use, the steel wire rope 95 of the hoisting device 9 is connected to the suspension eye 405 of the vehicle body 401 of the slope slotting machine 4, and a traction rope is set at the front and rear to connect the front traction eye 407 and the rear traction eye 406 respectively, and the magnetic control device 91 of the hoisting device 9 is used to jog the slope slotting machine 4 to its position. The sawing groove motor 412 is started to make the sawing groove blade 409 slot; the hammer motor 411 is started to rotate the turntable 413, and the pendulum 414 hits the slope to break the rock between the two sawing groove blades 409, and the travel motor 408 drives the travel wheel 402 to travel, forming a horizontal pipe groove 103. At a position close to the main drainage groove 102, the magnetic control device 91 is jogged to disengage the dynamic friction plate 92 and the fixed friction plate 93 from each other, and the steel wire rope is lowered to make the horizontal pipe groove 103 have a certain inclination angle for easy drainage.

[0070] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A construction method for a drainage structure for a deep cutting slope of strongly weathered mudstone, characterized by: It comprises a plurality of main drainage ditches (102) along the side slope (1), a plurality of horizontal drainage pipes (101) pre-buried under the slope surface and connected to the main drainage ditches (102), one end of the horizontal drainage pipes (101) connected to the main drainage ditches (102) having a lower elevation, and the other end of the horizontal drainage pipes (101) away from the main drainage ditches (102) having a higher elevation; The horizontal drain pipe (101) is provided with a plurality of holes for water inlet; The horizontal drainage pipe (101) is arc-shaped; The construction method includes the following steps: S1. When laying the horizontal drainage pipe (101), first construct the horizontal pipe trench (103); The outer wall of the pipe body (1011) of the horizontal drainage pipe (101) is provided with a porous crushed stone layer (1012), and the outer wall of the porous crushed stone layer (1012) is provided with a permeable geotextile layer (1013); The porous crushed stone layer (1012) is porous concrete in the shape of segmented annular cylinders; Outside the porous crushed stone layer (1012), a permeable geotextile layer (1013) is spirally wrapped around the porous crushed stone layer (1012); S2, setting a winch device (9) at the top of the slope (1), and using the winch device (9) to lower the slope surface slotting machine (4) to a position for constructing a horizontal pipe slot; S3, the slope slotting machine (4) constructs a horizontal pipe slot (103) with the hoisting device (9) as the center of the circle; The structure of the slope groover (4) is as follows: a vehicle body (401) is provided with a traveling wheel (402), suspension lifting eyes (405) are provided on both sides of the vehicle body (401), a front traction lifting eye (407) is provided at the front end of the vehicle body (401), and a rear traction lifting eye (406) is provided at the rear end of the vehicle body (401); A working groove (415) is provided in the middle of the vehicle body (401), and two sawing groove saw blades (409) are supported at one end of the working groove (415). The motor drives the sawing groove saw blades (409) to rotate through a transmission mechanism. The sawing groove saw blades (409) penetrate into the working groove (415) and are used to saw the two sides of the horizontal pipe groove (103); A rotating disk (413) is supported at the other end of the working groove (415). The motor drives the rotating disk (413) to rotate through a transmission mechanism. A plurality of pins are provided on the edge of the rotating disk. The pins are hinged to a pendulum (414). The pendulum (414) is used to pass through the working groove (415) and strike the slope surface. S4. Excavate the main drainage trench foundation along the slope; S5, burying a horizontal drainage pipe (101) in the horizontal pipe groove (103), and connecting the end of the horizontal drainage pipe (101) to the foundation of the main drainage groove; S6. Construct the concrete structure of the main drainage channel; The above steps are used to realize the construction of slope drainage structure.

2. The construction method of a strongly weathered mudstone deep cutting slope drainage structure according to claim 1 is characterized by: The slope (1) is provided with a plurality of horizontally arranged drainage ditches from top to bottom, and the main drainage ditch (102) is connected to the horizontally arranged drainage ditches.

3. The construction method of a strongly weathered mudstone deep cutting slope drainage structure according to claim 1 is characterized by: Before construction, the horizontal drainage pipe (101) is penetrated into the porous crushed stone layer (1012), and a permeable geotextile layer (1013) is wrapped around the porous crushed stone layer (1012); After the horizontal drainage pipe (101) is laid in the horizontal pipe groove (103), gravel with a particle size of more than 0.5 cm is filled in the horizontal pipe groove (103).

4. A construction device for the drainage structure of the deep cutting slope of strongly weathered mudstone as claimed in claim 1, characterized in that: The structure of the slope slotting machine (4) is as follows: a vehicle body (401) is provided with a traveling wheel (402), suspension lugs (405) are provided on both sides of the vehicle body (401), the suspension lugs (405) are used to connect with a steel wire rope (95) of a hoisting device (9) at a high place, a front traction lug (407) is provided at the front end of the vehicle body (401), and a rear traction lug (406) is provided at the rear end of the vehicle body (401); A working groove (415) is provided in the middle of the vehicle body (401), and two sawing groove saw blades (409) are supported at one end of the working groove (415). The motor drives the sawing groove saw blades (409) to rotate through a transmission mechanism. The sawing groove saw blades (409) penetrate into the working groove (415) and are used to saw the two sides of the horizontal pipe groove (103); A rotating disk (413) is supported at the other end of the working groove (415). The motor drives the rotating disk (413) to rotate through a transmission mechanism. A plurality of pins are provided on the edge of the rotating disk. The pins are hinged to a pendulum (414). The pendulum (414) is used to pass through the working groove (415) and strike the slope surface.

5. The construction device for the drainage structure of the deep cutting slope of strongly weathered mudstone according to claim 4 is characterized by: A plurality of rotating disks (413) are arranged along the axial direction, and a cavity for accommodating a pendulum (414) is provided on the edge of the rotating disk (413); The pendulum (414) is located between the two saw groove saw blades (409).

6. The construction device for the drainage structure of the deep cutting slope of strongly weathered mudstone according to claim 4 is characterized by: The hoisting device (9) is fixed or arranged on the limiting guide rail (15); The reel (94) of the hoisting device (9) is connected to the fixed friction plate (93), the movable friction plate (92) is connected to the shaft via a spline structure, the shaft is connected to the worm gear structure, and the worm gear is connected to the hoisting motor (99) via an elastic coupling (98); The moving friction plate (92) is also connected to the magnetic control device (91), and the magnetic control device (91) is used to control the moving friction plate (92) to slide along the shaft; A detachably connected friction transmission structure is formed between the movable friction plate (92) and the fixed friction plate (93).

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