A splitting excavation equipment and excavation method for tunnel construction

Abstract

The invention discloses a splitting and excavation equipment for tunnel construction and an excavation method thereof, which relate to the technical field of tunnel construction, and include a cantilever trolley; a multi-directional cantilever is fixedly installed at the left end of the cantilever trolley, and a spraying method is adopted to make the coating solidify quickly in situ and then adhere to the surface of the coal rock mass to form a plastic layer, so as to avoid the scattered falling of soft rock after crushing in the peripheral annular seam after excavation, and utilize the construction method of peripheral annular seam monomer excavation + middle drilling and rock extraction to realize the synchronous operation construction of the edge and center of the tunnel, cut the surrounding rock to form an empty face, and drill splitting holes at appropriate intervals in the middle of the heading face to form certain tension cracks on the working face, so as to facilitate the rapid crushing of the surrounding rock by hydraulic impact, and improve the overall excavation and forming efficiency of the tunnel.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to splitting and tunneling equipment used for tunnel construction and a tunneling method thereof. Background Art

[0002] Tunnel construction is a complex project involving knowledge from many disciplines and technologies. It requires not only precise geological exploration and structural design, but also consideration of construction technology, safety, environmental protection and other factors. Splitting tunneling equipment is a tool that uses hydraulic principles to split rocks or demolish buildings. It is mainly used in mining rock mining, secondary rock decomposition, tunnel excavation, building demolition and other fields.

[0003] At present, most tunnels are constructed by water drilling and hydraulic fracturing, which are inefficient and difficult to meet the construction schedule of large projects, resulting in poor economic benefits. Moreover, due to the heavy weight of the drill hole, only single work can be carried out. Drilling a hole requires at least three workers to work together, resulting in low construction efficiency. There is also a lack of reinforcement equipment and methods for the drilling position, and the workers' own drilling proficiency is required to be high. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a splitting excavation equipment and an excavation method thereof for tunnel construction.

[0005] The present invention is implemented in this way: a splitting and tunneling equipment and tunneling method for tunnel construction are constructed, the device comprises a cantilever trolley; a multi-directional cantilever is fixedly installed at the left end of the cantilever trolley; a tunneling assembly is fixedly arranged on the left side of the multi-directional cantilever, and a tunneling cutter barrel is fixedly installed at the rotating end of the left end of the multi-directional cantilever; a supporting frame with a protective function is rotatably installed on the top of the multi-directional cantilever; a laser sensing system with a sensing function is fixedly installed at the rear end of the supporting frame by bolts; a fiber optic inertial navigation system is fixedly installed on the top of the rotating frame on the left side of the cantilever trolley by bolts; a shovel plate is rotatably installed on the left side of the cantilever trolley;

[0006] The excavation assembly includes a fixed sleeve fixedly installed on the left end of the multi-directional cantilever; the fixed sleeve is an inner and outer sleeve structure, and an annular groove exists between the inner and outer sleeves of the fixed sleeve; an electromagnetic block is slidably arranged in the annular groove in the fixed sleeve; the electromagnetic block is plugged and fixedly installed on the right side of the support collar; two groups of combined slides are fixedly installed on the upper and lower sides of the support collar by welding; pressure cylinders with regulating function are fixedly installed on the inner sides of the two groups of combined slides on the upper and lower sides of the support collar; a split-arm spraying assembly is fixedly installed on the inner side pin of the combined slide at the top of the support collar; a split-arm excavation assembly is fixedly installed on the inner side of the combined slide at the bottom of the support collar.

[0007] Preferably, the branch arm spraying assembly includes a first slide rail fixedly mounted on the inner side of the combined slide plate at the top of the support collar; a rotating seat is welded and fixedly mounted on the left side of the top of the first slide rail; a hard conduit with a flow-guiding function is rotatably arranged at the center hole of the rotating seat.

[0008] Preferably, the hard conduit is plugged and fixedly installed at the center hole of the vortex seat; the vortex seat is fixedly arranged on the top of the moving plate, and the moving plate is slidably arranged on the first slide rail; the right side conduit of the vortex seat is fixedly connected to the pressure valve.

[0009] Preferably, the branch arm excavation assembly includes a second slide rail fixed by a pin on the inner side of the combined slide plate at the bottom of the support collar; a threaded seat is welded and fixedly installed on the left side of the bottom of the second slide rail, and an electromagnetic collar and a threaded sleeve are arranged inside the threaded seat.

[0010] Preferably, a screw rod is threadedly connected to the inner screw hole of the threaded sleeve inside the threaded seat; the right side of the screw rod is plugged and fixedly installed on the driving end of the driving assembly; and a drill bit is plugged and fixedly installed on the left end of the screw rod.

[0011] Preferably, the fiber optic inertial navigation system includes a protective shell fixedly installed on the top of the rotating frame on the left side of the cantilever trolley by bolts; a programmable PCB board is fixedly installed inside the protective shell, and an accelerometer and a three-axis gyroscope are fixedly installed on the programmable PCB board by soldering.

[0012] Preferably, the laser sensing system is specifically composed of a laser target, a laser sensor radar and an adjustment disk for adjusting the angle, and the laser target and the laser sensor radar are connected to a programmable PCB board via cables.

[0013] A tunneling method for splitting tunneling equipment used in tunnel construction, comprising the following steps:

[0014] Step 1: Control the displacement of the cantilever trolley to drive the multi-directional cantilever and the tunneling assembly close to the rock wall in the tunnel, where the position of the cantilever trolley is detected;

[0015] Step 2: The staff installs a reflector on the bottom side of the air duct used for ventilation at the top of the tunnel, and sets the reflector on the bottom side of the air duct on the top side of the tunnel as the reference point of the coordinate system. The cantilever trolley then moves to transform its spatial coordinates, and converts the absolute angle measured by the laser sensing system in the inertial coordinate system into a relative angle in the tunnel coordinate system. The accelerometer and three-axis gyroscope inside the fiber optic inertial navigation system are used to obtain the dynamic posture information of the tunnel boring machine in real time. The laser target in the laser sensing system receives the posture information of the machine body, and the light emitted by the laser sensor radar in the laser sensing system and falls on the target is used to obtain the dynamic posture information of the tunnel boring machine. The point feature information is transmitted to the microcontroller through the CAN bus, and after the fusion and filtering of multiple sets of data, the position is solved to obtain the lateral offset and the travel distance of the vehicle body, and the posture information of the cantilever trolley body is obtained by solving; finally, according to the fusion transformation rule, the distance information is converted to the inertial system, and the distance information is adjusted by the fiber optic inertial navigation system; the real-time posture information is transmitted to the control system of the cantilever trolley, and the real-time posture of the cantilever trolley is corrected and calibrated through the control system on the cantilever trolley, and a remote visualization interactive system is designed to update and monitor the real-time posture of the cantilever trolley;

[0016] Step 3: At the same time, the hydraulic system on the cantilever trolley provides hydraulic power to the pressure cylinder, so that the pressure cylinder pulls the combined slide plate and the branch arm spraying assembly and the branch arm excavation assembly at the upper and lower ends of the combined slide plate to adjust the displacement, and then supplies energy to the electromagnetic block; when the electromagnetic block is powered off, the support ring here rotates with the shaft head at the left end of the cantilever trolley passing through it, so as to adjust the spatial position between the branch arm spraying assembly and the branch arm excavation assembly on the upper and lower sides of the support ring; when the electromagnetic block is powered on and magnetic adsorption is performed, the support ring here is fixedly adsorbed on the side of the fixed sleeve to complete the rotation adjustment action;

[0017] Step 4, the arm excavation assembly is pushed to approach the peripheral annular seam, and then the driving motor on the cantilever trolley drives the excavation cutter barrel at the left end of the multi-directional cantilever to rotate to perform middle excavation, and the driving assembly is synchronously controlled to rotate the screw and the drill bit, and the drill bit and the driving assembly on the second slide rail are slowly rotated out through the threaded transmission action between the screw and the threaded seat to achieve peripheral excavation action. After the excavation of the peripheral annular seam is completed, the arm spraying assembly and the arm excavation assembly are rotated and exchanged by coordinating the energy supply of the electromagnetic block and the rotation speed of the cantilever trolley. Here, the hard guide tube on the arm spraying assembly is aligned with the peripheral annular seam;

[0018] Step 5. Then external equipment will introduce the paint into the hard conduit through the pressure valve and the vortex seat. The vortex seat will drive the hard conduit to rotate due to the push of the paint. The hard conduit will spray the paint into the holes excavated by the branch arm excavation assembly. The paint here is stored in the form of two liquid components. The paint is sprayed out to make it quickly solidify in situ and then bonded to the surface of the coal rock to form a plastic layer. Finally, the rock is broken by the hydraulic cylinder on the side of the cantilever trolley.

[0019] The present invention has the following advantages: The present invention provides a splitting excavation equipment and an excavation method for tunnel construction through improvement, which has the following improvements compared with the same type of equipment:

[0020] The splitting excavation equipment and excavation method for tunnel construction described in the present invention adopt a spraying method to make the coating quickly solidify in situ and then bond to the surface of the coal rock mass to form a plastic layer, so as to avoid the scattered falling of soft rock after crushing in the peripheral annular seam after excavation. The construction method of peripheral annular seam monomer excavation + central drilling and rock extraction is utilized to realize synchronous construction of the edge and center of the tunnel, cut the surrounding rock to form an open face, and drill splitting holes at appropriate intervals in the middle of the heading face to form certain tension cracks on the working surface, so as to facilitate the rapid crushing of the surrounding rock by hydraulic impact, thereby improving the overall excavation and forming efficiency of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the process of the present invention;

[0022] Figure 2 It is a schematic diagram of the axle side structure of the cantilever trolley of the present invention;

[0023] Figure 3 It is a schematic diagram of the axial structure of the tunneling assembly of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the split-arm spraying assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the arm excavation assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the decomposed structure of the fiber optic inertial navigation system of the present invention;

[0027] Figure 7 It is a flow chart of attitude detection of the laser sensing system and the fiber optic inertial navigation system of the present invention.

[0028] Among them: cantilever trolley-1, multi-directional cantilever-2, excavation component-3, support frame-4, laser sensing system-5, fiber optic inertial navigation system-6, shovel plate-7, fixed sleeve-31, electromagnetic block-32, support sleeve ring-33, combined slide plate-34, pressure cylinder-35, branch arm spraying component-36, branch arm excavation component-37, first slide rail-361, rotating seat-362, hard guide tube-363, eddy current seat-364, moving plate-365, pressure valve-366, second slide rail-371, threaded seat-372, screw-373, drive component-374, drill bit-375, protective shell-61, programmable PCB board-62, accelerometer-63, three-axis gyroscope-64. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 to Figure 7 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it 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 connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of the embodiments of the present invention based on its overall structure.

[0032] Embodiment 1:

[0033] See also Figure 1 to Figure 7The present invention provides a splitting and tunneling equipment for tunnel construction and a tunneling method thereof, comprising a cantilever trolley 1, wherein the hydraulic system on the cantilever trolley 1 is provided with a hydraulic cylinder for crushing rock mass through a connecting pipe; a multi-directional cantilever 2 is fixedly installed at the left end of the cantilever trolley 1; a tunneling assembly 3 is fixedly installed on the left side of the multi-directional cantilever 2, and a tunneling motor is provided on the left side of the multi-directional cantilever 2, and a tunneling cutter barrel is fixedly installed on the transmission shaft of the motor through the tunneling assembly 3; a supporting frame 4 with a protective function is rotatably installed on the top of the multi-directional cantilever 2; a laser sensing system 5 with a sensing function is fixedly installed on the rear end of the supporting frame 4 by bolts; a fiber optic inertial navigation system 6 is fixedly installed on the top of the rotating frame on the left side of the cantilever trolley 1 by bolts; a shovel plate 7 is rotatably installed on the left side of the cantilever trolley 1;

[0034] The excavation assembly 3 includes a fixed sleeve 31 fixedly installed on the left end of the multi-directional cantilever 2; the fixed sleeve 31 is an inner and outer sleeve structure, and there is an annular groove between the inner and outer sleeves of the fixed sleeve 31; an electromagnetic block 32 is slidably arranged in the annular groove in the fixed sleeve 31; the electromagnetic block 32 is plugged and fixedly installed on the right side of the support ring 33, and the inner wall of the support ring 33 is rotatably connected to the motor drive shaft arranged on the left side of the multi-directional cantilever 2; two groups of combined slide plates 34 are fixedly installed on the upper and lower sides of the support ring 33 by welding; pressure cylinders 35 with regulating function are fixedly installed on the inner sides of the two groups of combined slide plates 34 on the upper and lower sides of the support ring 33; a branch arm spraying assembly 36 is fixed to the inner side pin of the combined slide plate 34 at the top of the support ring 33; and a branch arm excavation assembly 37 is fixedly installed on the inner side of the combined slide plate 34 at the bottom of the support ring 33.

[0035] The split-arm spraying assembly 36 includes a first slide rail 361 fixedly installed on the inner side of the combined slide plate 34 at the top of the support ring 33; a rotating seat 362 is welded and fixedly installed on the left side of the top of the first slide rail 361; a hard conduit 363 with a flow-guiding function is rotatably arranged at the center hole of the rotating seat 362; the hard conduit 363 is plugged and fixedly installed at the center hole of the vortex seat 364; the vortex seat 364 is fixedly arranged on the top of the moving plate 365, and the moving plate 365 is slidably arranged on the first slide rail 361; the right side conduit of the vortex seat 364 is fixedly connected to the pressure valve 366.

[0036] The split-arm excavation assembly 37 includes a second slide rail 371 fixed by a pin on the inner side of the combined slide plate 34 at the bottom of the support ring 33; a threaded seat 372 is welded and fixedly installed on the left side of the bottom of the second slide rail 371, and an electromagnetic ring with electromagnetic adsorption function is rotatably arranged on the inner wall of the threaded seat 372, and a threaded sleeve is fixedly installed inside the electromagnetic ring; a screw rod 373 is threadedly connected to the screw hole on the inner side of the threaded sleeve inside the threaded seat 372; the right side of the screw rod 373 is plugged and fixedly installed on the driving end of the driving assembly 374, and the driving assembly 374 is specifically composed of a stepping motor and a transmission gear; a drill bit 375 is plugged and fixedly installed on the left end of the screw rod 373.

[0037] Embodiment 2:

[0038] See also Figure 1 to Figure 7 , a splitting excavation equipment and an excavation method thereof for tunnel construction of the present invention, compared with the first embodiment, this embodiment also includes: the fiber optic inertial navigation system 6 includes a protective shell 61 fixedly installed on the top of the left rotating frame of the cantilever trolley 1 by bolts; a programmable PCB board 62 is fixedly installed inside the protective shell 61, and an accelerometer 63 and a three-axis gyroscope 64 are fixedly installed on the programmable PCB board 62 by soldering; the laser sensing system 5 is specifically composed of a laser target, a laser sensor radar and an adjustment disk for adjusting the angle, and the laser target and the laser sensor radar are connected to the programmable PCB board 62 by cables.

[0039] Based on the above, the working principle of a splitting excavation equipment and excavation method for tunnel construction is:

[0040] First, when using this device, first place the device in the working area, and then connect the device to an external power source to provide the device with the power required for operation;

[0041] Second, before the excavation work is carried out, the surveying personnel draw the cross-section center line and outer contour line according to the design position, and then control the displacement of the cantilever trolley 1 to drive the multi-directional cantilever 2 and the excavation assembly 3 close to the rock wall in the tunnel, and the position of the cantilever trolley 1 is detected here;

[0042] Third, the staff installs a reflective plate on the bottom side of the air duct used for ventilation at the top of the tunnel, sets the reflective plate installed on the bottom side of the air duct on the top side of the tunnel as the reference point of the coordinate system, and then drives the cantilever trolley 1 to move. The spatial coordinates of the cantilever trolley 1 are transformed, and the absolute angle measured by the laser sensing system 5 in the inertial coordinate system is converted to a relative angle in the tunnel coordinate system. The accelerometer 63 and the three-axis gyroscope 64 inside the fiber optic inertial navigation system 6 are used to obtain the dynamic posture information of the tunnel boring machine body in real time. The laser target in the laser sensing system 5 receives the body posture information, and the laser sensor radar in the laser sensing system 5 transmits a laser beam that falls on the target. The light spot feature information on the cantilever trolley is transmitted to the single-chip microcomputer through the CAN bus, and after the fusion and filtering of multiple sets of data, the position is solved to obtain the lateral offset and the travel distance of the vehicle body, and the posture information of the cantilever trolley 1 is obtained by solving the position; finally, according to the fusion transformation rule, the distance information is converted to the inertial system, and the distance information is adjusted by the fiber optic inertial navigation system 6; the real-time navigation position information is output and transmitted to the control system of the cantilever trolley 1, and the real-time posture of the cantilever trolley 1 is corrected and calibrated through the control system on the cantilever trolley 1, and a remote visualization interaction system is designed to update and monitor the real-time posture of the cantilever trolley 1;

[0043] Fourth, the hydraulic system on the cantilever trolley 1 provides hydraulic power to the pressure cylinder 35 at the same time, so that the pressure cylinder 35 pulls the combined slide plate 34 and the arm spraying assembly 36 and the arm excavation assembly 37 at the upper and lower ends of the combined slide plate 34 to adjust the displacement, and then supplies energy to the electromagnetic block 32; when the electromagnetic block 32 is powered off, the support collar 33 here will rotate with the transmission shaft head of the excavation motor set on the left side of the cantilever trolley 1 passing through it, so as to adjust the spatial position between the arm spraying assembly 36 and the arm excavation assembly 37 on the upper and lower sides of the support collar 33; when the electromagnetic block 32 is powered on and magnetically adsorbed, the support collar 33 here is fixedly adsorbed on the side of the fixed sleeve 31 to complete the rotation adjustment action;

[0044] Fifth, the arm excavation assembly 37 is pushed to approach the peripheral annular seam, and then the driving motor on the cantilever trolley 1 drives the excavation cutter barrel at the left end of the multi-directional cantilever 2 to rotate to perform middle excavation. Here, the rock mass excavated by the excavation cutter barrel is taken out and transported out by the conveyor belt on the cantilever trolley 1, and the motor in the synchronous control drive assembly 374 is operated to rotate the screw 373 and the drill bit 375. At this time, the electromagnetic collar inside the threaded seat 372 is not energized, and the threaded sleeve inside the threaded seat 372 rotates idly with the rotation of the screw 373. Then, the electromagnetic collar inside the threaded seat 372 is energized to generate a magnetic field. Here, the electromagnetic collar drives the threaded sleeve to be adsorbed and fixed inside the threaded seat 372 due to electromagnetic adsorption, and the screw 373 and the threaded seat 372 are driven by the motor in the drive assembly 374. The internal threaded sleeve performs threaded transmission, so that the screw 373 drives the drill bit 375 to move outward to perform excavation. After the drill bit 375 has excavated a certain distance, the power supply to the electromagnetic collar is disconnected, and the screw 373 drives the electromagnetic collar and the threaded sleeve to idle in the threaded seat 372. Then, the motor in the drive assembly 374 is controlled to reverse and the electromagnetic collar is supplied with energy again, so that the drill bit 375 slowly withdraws from the drilling position of the drill bit 375 under the threaded transmission action of the internal threaded sleeve of the threaded seat 372 and the screw 373; after the excavation of the peripheral annular seam is completed, the arm spraying assembly 36 and the arm excavation assembly 37 are rotated and exchanged by coordinating the energy supply of the electromagnetic block 32 and the rotation speed of the cantilever trolley 1, and the hard guide tube 363 on the arm spraying assembly 36 is aligned with the peripheral annular seam;

[0045] Sixth, then the external equipment introduces the paint into the hard conduit 363 through the pressure valve 366 and the vortex seat 364. Here, the vortex seat 364 will drive the hard conduit 363 to rotate due to the push of the paint. The hard conduit 363 sprays the paint in the hole excavated by the branch arm excavation component 37. The paint here is stored in the form of two liquid components respectively. After being sprayed, the paint is quickly solidified in situ and adheres to the surface of the coal rock mass to form a plastic layer, which effectively avoids the scattered falling of soft rock after crushing in the peripheral annular seam after excavation. The construction method of peripheral annular seam monomer excavation + central drilling and rock extraction is used to realize synchronous construction of the edge and center of the tunnel, thereby improving the overall excavation and forming efficiency of the tunnel and reducing the loss of pick teeth. Finally, the hydraulic cylinder body on the side of the cantilever trolley 1 is used to crush the rock mass, and the rock mass excavated by the excavation cutter barrel is transported out again through the conveyor belt on the cantilever trolley 1.

[0046] The present invention provides a splitting excavation equipment and excavation method for tunnel construction through improvements. The coating is sprayed to be quickly cured in situ and then bonded to the surface of the coal rock mass to form a plastic layer, so as to avoid the scattered falling of soft rock after crushing in the peripheral annular seam after excavation. The construction method of peripheral annular seam monomer excavation + central drilling and rock extraction is utilized to realize synchronous operation and construction of the edge and center of the tunnel, cut the surrounding rock to form an open face, and drill splitting holes at appropriate intervals in the middle of the heading face to form certain tension cracks on the working face, so as to facilitate the rapid crushing of the surrounding rock by hydraulic impact, thereby improving the overall excavation and forming efficiency of the tunnel.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0048] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A splitting and tunneling equipment for tunnel construction, comprising a cantilever trolley (1); a multi-directional cantilever (2) is fixedly mounted on the left end of the cantilever trolley (1); a tunneling assembly (3) is fixedly arranged on the left side of the multi-directional cantilever (2), and a tunneling cutter barrel is fixedly mounted on the left end rotation end of the multi-directional cantilever (2); a support frame (4) with a protective function is rotatably mounted on the top of the multi-directional cantilever (2); a laser sensing system (5) with a sensing function is fixedly mounted on the rear end of the support frame (4) by bolts; a fiber optic inertial navigation system (6) is fixedly mounted on the top of the left rotating frame of the cantilever trolley (1) by bolts; a shovel plate (7) is rotatably mounted on the left side of the cantilever trolley (1); Features: The excavation assembly (3) comprises a fixing sleeve (31) fixedly mounted on the left end of the multi-directional cantilever (2); the fixing sleeve (31) is in an inner and outer sleeve structure, and an annular slide groove exists between the inner and outer sleeves of the fixing sleeve (31); an electromagnetic block (32) is slidably arranged in the annular slide groove in the fixing sleeve (31); the electromagnetic block (32) is plugged and fixedly mounted on the right side of a supporting collar (33); two sets of combined slide plates (34) are fixedly mounted on the upper and lower sides of the supporting collar (33) by welding; Pressure cylinders (35) with regulating functions are fixedly installed on the inner sides of the two groups of combined slide plates (34) on the upper and lower sides of the support collar (33); a split-arm spraying assembly (36) is fixedly installed on the inner side pin of the top combined slide plate (34) of the support collar (33); and a split-arm excavation assembly (37) is fixedly installed on the inner side of the bottom combined slide plate (34) of the support collar (33); the split-arm spraying assembly (36) uses a spraying method to allow the coating to be quickly cured in situ and then bonded to the surface of the coal and rock mass to form a plastic layer.

2. A splitting and excavation equipment for tunnel construction according to claim 1, characterized in that: The arm spraying assembly (36) comprises a first slide rail (361) fixedly mounted on the inner side of a combined slide plate (34) at the top of a support collar (33); a rotating seat (362) is welded and fixedly mounted on the left side of the top of the first slide rail (361); and a hard conduit (363) having a flow-guiding function is rotatably arranged at the center hole of the rotating seat (362).

3. A splitting and excavation equipment for tunnel construction according to claim 2, characterized in that: The hard conduit (363) is plugged and fixedly installed at the center hole of the vortex seat (364); the vortex seat (364) is fixedly arranged on the top of the movable plate (365), and the movable plate (365) is slidably arranged on the first slide rail (361); the right conduit of the vortex seat (364) is fixedly connected to the pressure valve (366).

4. A splitting and excavation equipment for tunnel construction according to claim 3, characterized in that: The arm excavation assembly (37) comprises a second slide rail (371) fixedly arranged by a pin on the inner side of a combined slide plate (34) at the bottom of a support collar (33); a threaded seat (372) is welded and fixedly installed on the left side of the bottom of the second slide rail (371), and an electromagnetic collar and a threaded sleeve are arranged inside the threaded seat (372).

5. A splitting and excavation equipment for tunnel construction according to claim 4, characterized in that: A screw rod (373) is threadedly connected to the inner screw hole of the threaded sleeve inside the threaded seat (372); the right side of the screw rod (373) is plugged and fixedly installed on the driving end of the driving assembly (374); and a drill bit (375) is plugged and fixedly installed on the left end of the screw rod (373).

6. A splitting and excavation equipment for tunnel construction according to claim 5, characterized in that: The fiber optic inertial navigation system (6) comprises a protective housing (61) fixedly mounted on the top of a rotating frame on the left side of the cantilever trolley (1) by means of bolts; a programmable PCB board (62) is fixedly mounted inside the protective housing (61), and an accelerometer (63) and a three-axis gyroscope (64) are fixedly mounted on the programmable PCB board (62) by means of solder.

7. A splitting and excavation equipment for tunnel construction according to claim 6, characterized in that: The laser sensing system (5) specifically consists of a laser target, a laser sensor radar, and an adjustment disk for adjusting the angle, and the laser target and the laser sensor radar are both connected to a programmable PCB board (62) via cables.

8. A tunneling method for a splitting tunneling equipment for tunnel construction, used to implement the splitting tunneling equipment for tunnel construction as claimed in claim 7, characterized in that: The following steps are involved: Step 1: Controlling the displacement of the cantilever trolley (1) to drive the multi-directional cantilever (2) and the tunneling assembly (3) close to the rock wall in the tunnel, where the position of the cantilever trolley (1) is detected; Step 2: The staff installs a reflective plate on the bottom side of the air duct used for ventilation at the top of the tunnel, and sets the reflective plate on the bottom side of the air duct on the top side of the tunnel as the reference point of the coordinate system. Then, the cantilever trolley (1) is displaced to transform its spatial coordinates, and the absolute angle measured by the laser sensing system (5) in the inertial coordinate system is converted to a relative angle in the tunnel coordinate system. The accelerometer (63) and the three-axis gyroscope (64) inside the fiber optic inertial navigation system (6) are used to obtain the dynamic posture information of the tunnel boring machine body in real time. The laser target in the laser sensing system (5) receives the body posture information, and the laser sensor radar in the laser sensing system (5) emits a laser beam that falls on the target. The light spot feature information on the cantilever trolley (1) is transmitted to the single-chip microcomputer via the CAN bus, and after the fusion and filtering of multiple sets of data, the position is solved to obtain the lateral offset and the travel distance of the vehicle body, and the posture information of the cantilever trolley (1) is obtained by solving; finally, according to the fusion transformation rule, the distance information is converted into the inertial system, and the distance information is adjusted using the fiber optic inertial navigation system (6); the real-time navigation posture is output to the control system of the cantilever trolley (1), and the real-time posture of the cantilever trolley (1) is corrected and calibrated by the control system on the cantilever trolley (1), and a remote visualization interaction system is designed to update and monitor the real-time posture of the cantilever trolley (1); Step 3: At the same time, the hydraulic system on the cantilever trolley (1) provides hydraulic power to the pressure cylinder (35), so that the pressure cylinder (35) pulls the combined slide plate (34) and the arm spraying assembly (36) and the arm excavation assembly (37) at the upper and lower ends of the combined slide plate (34) to adjust the displacement, and then supplies energy to the electromagnetic block (32); when the electromagnetic block (32) is powered off, the support collar (33) here rotates along with the drive shaft head on the left side of the motor of the cantilever trolley (1) passing through the interior thereof, thereby adjusting the spatial position between the arm spraying assembly (36) and the arm excavation assembly (37) at the upper and lower sides of the support collar (33); when the electromagnetic block (32) is powered on and magnetically adsorbed, the support collar (33) here is fixedly adsorbed on the side of the fixed sleeve (31), completing the rotation adjustment action; Step 4: The arm excavation assembly (37) is pushed to approach the peripheral annular joint, and then the driving motor on the cantilever trolley (1) drives the excavation cutter barrel at the left end of the multi-directional cantilever (2) to rotate to perform central excavation. The drive assembly (374) is synchronously controlled to rotate the screw rod (373) and the drill bit (375). The screw transmission action between the screw rod (373) and the threaded seat (372) causes the drill bit (375) and the drive assembly (374) on the second slide rail (371) to slowly rotate out to achieve peripheral excavation. After the excavation of the peripheral annular joint is completed, the arm spray assembly (36) and the arm excavation assembly (37) are rotated and exchanged by coordinating the energy supply of the electromagnetic block (32) and the rotation speed of the cantilever trolley (1). Here, the hard guide tube (363) on the arm spray assembly (36) is aligned with the peripheral annular joint. Step 5: Then, the external equipment introduces the coating into the interior of the hard conduit (363) through the pressure valve (366) and the vortex seat (364). Here, the vortex seat (364) will drive the hard conduit (363) to rotate due to the push of the coating. The hard conduit (363) sprays the coating into the hole excavated by the branch arm excavation component (37), so that the coating is quickly cured in situ and adheres to the surface of the coal rock mass to form a plastic layer.

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