Full-face mechanical tunneling device and construction method for inclined shaft tunnel

Abstract

The present invention provides a full-face mechanical tunneling device and construction method for inclined shaft tunnels, including a support ring. The support ring is movably sleeved with a drill bit. A transmission sleeve is provided at the tail of the drill bit. A hydraulic motor is provided inside the support ring, and the hydraulic motor is connected to the transmission sleeve for driving the transmission sleeve to rotate. A plurality of deviation rectifying cylinders are further provided on the side wall of the support ring, and the axes of the deviation rectifying cylinders are along the radial direction of the support ring. An inner support is provided inside the support ring, and a feed cylinder is provided between the inner support and the drill bit. The feed cylinder is used to push the drill bit forward. The structure of the present invention is simplified, the self-weight is reduced, and it is convenient to realize the tunneling of inclined shaft tunnels. The construction method of the present invention solves the technical problem that the slag discharge at the rear of the full-face mechanical tunneling machine in the prior art cannot meet the requirements of inclined shaft tunnel tunneling, and the slag discharge is convenient. The operation of real-time deviation rectification is convenient, the tunneling accuracy is high, and the high-precision one-time through construction of a long inclined shaft is realized.

Description

Technical Field

[0001] The present invention relates to the field of inclined shaft tunnel construction, and particularly to a full-face mechanical tunneling device and construction method for inclined shaft tunnels. Background Art

[0002] For the water conveyance tunnels of hydropower projects and the ventilation tunnels of some long-distance traffic tunnels, the designs are all inclined shaft structures. Especially for pumped storage power stations, they are all located in mountainous areas with large elevation differences. To shorten the length of the water conveyance tunnels, large-inclination underground water conveyance tunnels are generally set up. For inclined shaft tunnel construction, at present, raise boring machines are used to drill slag-chute wells. The raise boring machines for drilling slag-chute wells generally have a drilling length of about 300 - 400 meters. Considering economic factors, at present, the excavation of long inclined shafts is carried out by manual drilling and blasting methods. For example, a construction method for reverse excavation of an inclined shaft in a hillside-type cavern as described in the patent document CN105156120A has technical problems such as a harsh working environment, great safety hazards, and low efficiency. Although at present, tunnel full-face mechanical tunneling machines, i.e., TBMs, have been widely used for circular horizontal tunnels with large lengths. For example, a full-face rock tunneling machine for a long-distance large-slope inclined shaft as described in CN102704945A has a technical problem of difficult slag discharging backward. CN103850684A describes a shaft tunneling machine for expanding the pilot shaft of a raise boring machine, but the structure of this shaft tunneling machine is too complex, its self-weight is too heavy, and it is difficult to correct the deviation, so it is not suitable for inclined shaft excavation. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a full-face mechanical tunneling device and construction method for inclined shaft tunnels, which can solve the technical problem that the slag discharging at the rear of the tunnel full-face mechanical tunneling machine in the prior art cannot meet the requirements of inclined shaft tunnel tunneling, is convenient for slag discharging, has a simple structure, can realize high-quality, high-efficiency and safe tunneling of long inclined shafts, and can correct the deviation online to ensure that the tunneling length of the inclined shaft is not affected by construction deviation.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a full-face mechanical tunneling device for inclined shaft tunnels, including a support ring, the support ring is movably sleeved with a drill bit, a transmission sleeve is provided at the tail of the drill bit, a hydraulic motor is provided in the support ring, and the hydraulic motor is connected to the transmission sleeve for driving the transmission sleeve to rotate;

[0005] A plurality of deviation correction cylinders are further provided on the side wall of the support ring, and the axes of the deviation correction cylinders are along the radial direction of the support ring;

[0006] An inner support is provided in the support ring, and a feed cylinder is provided between the inner support and the drill bit, and the feed cylinder is used to push the drill bit forward.

[0007] In a preferred solution, a sealing member is provided between the support ring and the drill bit, and the outer diameter of the drill bit is greater than the outer diameter of the support ring;

[0008] The hydraulic motor and the transmission sleeve are connected in a way that can transmit torque and allow relative sliding.

[0009] In a preferred embodiment, one end of the feed cylinder abuts against the inner support, and the other end is connected to the drill bit through a thrust bearing.

[0010] In a preferred embodiment, the feed cylinder is a through-hole cylinder, and the transmission sleeve passes through the feed cylinder and is connected to the hydraulic motor;

[0011] Alternatively, the feed cylinder is a combination of multiple cylinders, and the multiple cylinders are distributed around the transmission sleeve along the circumference.

[0012] In a preferred embodiment, the hydraulic motor is a through-hole hydraulic motor. The outer ring of the hydraulic motor is fixedly connected to the support ring, and the inner ring of the hydraulic motor and the transmission sleeve are connected in a way that can transmit torque and allow relative sliding;

[0013] Alternatively, there are multiple hydraulic motors. The fixed parts of the multiple hydraulic motors are fixedly connected to the support ring, and the movable parts of the hydraulic motors are connected to the transmission sleeve through a transmission mechanism in a way that can transmit torque and allow relative sliding. The multiple hydraulic motors are arranged around the transmission sleeve.

[0014] In a preferred embodiment, the bottom of the deviation correction cylinder is connected to the transmission sleeve through a bearing. The inner ring of the bearing and the transmission sleeve have a sliding connection structure, and the deviation correction cylinder is fixedly arranged on the support ring through the inner support.

[0015] In a preferred embodiment, the deviation correction cylinder is axially arranged in two layers, and each layer has multiple deviation correction cylinders.

[0016] In a preferred embodiment, the surface of the drill bit is provided with multiple hob cutters and scraping cutters;

[0017] The full-face mechanical tunneling device is provided with an inclination sensor, and a stroke sensor is provided on the deviation correction cylinder.

[0018] A construction method using the above-mentioned full-face mechanical tunneling device for inclined shaft tunnels includes the following steps:

[0019] S1. Drill a slag chute with a diameter greater than 1 m in the cross-section of the inclined shaft tunnel;

[0020] S2. Expand the top of the inclined shaft tunnel until it is large enough to accommodate the full-face mechanical tunneling device;

[0021] S3. Install the full-face mechanical tunneling device;

[0022] S4. Start the deviation correction cylinder, fix the full-face mechanical tunneling device in the inclined shaft tunnel, and start the full-face mechanical tunneling device to drill;

[0023] The drill cuttings are discharged through the sluicing well.

[0024] S5. After the tunneling depth reaches one feed stroke of the feed cylinder, retract the deviation correction cylinder and the feed cylinder, so that the entire full-face mechanical tunneling device moves forward under gravity.

[0025] During tunneling, measurement and deviation correction are carried out at any time.

[0026] The full-face construction of the inclined shaft tunnel is realized through the above steps.

[0027] In the preferred solution, a horizontal pilot tunnel is excavated at the bottom of the inclined shaft tunnel. The sluicing well is excavated upward along the axis of the inclined shaft tunnel from the horizontal pilot tunnel with a raiseboring machine. A jacking cylinder is arranged below the raiseboring machine. After drilling one footage, lock the raiseboring machine, retract the jacking cylinder, install a new jacking section steel pipe at the tail of the raiseboring machine, and then the jacking cylinder continues to jack up. Repeat the above steps to complete the construction of the sluicing well.

[0028] When the full-face mechanical tunneling device tunnels close to the horizontal pilot tunnel, stop discharging the drill cuttings, so that the horizontal pilot tunnel is basically filled with drill cuttings, and then the full-face mechanical tunneling device tunnels out of the hole.

[0029] If it is difficult to control the deviation correction of the full-face mechanical tunneling device, stop tunneling, retract the deviation correction cylinder, start the feed cylinder to let the full-face mechanical tunneling device retreat, then extend the deviation correction cylinder to reposition and fix the full-face mechanical tunneling device, and then retract the feed cylinder and the drill bit to resume tunneling.

[0030] An inclination sensor is provided on the full-face mechanical tunneling device. The inclination sensor adopts a combination of a gyroscope and a magnetic inertial navigation sensor. Through combined calculation, angle and displacement offset parameters are obtained to guide the drilling and deviation correction operations. A stroke sensor is provided on the deviation correction cylinder to facilitate controlling the piston rod stroke of the deviation correction cylinder according to the detection parameters of the inclination sensor.

[0031] The present invention provides a full-face mechanical tunneling device for inclined shaft tunnels, which simplifies the structure of the existing full-face rock tunneling machine, reduces its self-weight, and facilitates the tunneling of inclined shaft tunnels. In a preferred embodiment, a multi-layer deviation rectifying oil cylinder structure is provided, and a rigid connection structure is adopted between each layer of deviation rectifying oil cylinders. The transmission sleeve of the drill bit penetrates through the position where the deviation rectifying oil cylinders are located before being connected to the hydraulic motor. Therefore, the deviation rectifying oil cylinders can achieve on-line deviation rectification, and the deviation rectifying operation can be well transmitted to the position of the drill bit, with a small deviation rectification error. The provided inclination sensor and stroke sensor can achieve intelligent on-line deviation rectification. The construction method of the present invention adopts a scheme of first driving a slag chute with a diameter greater than 1 m and then tunneling with an improved full-face mechanical tunneling device, which solves the technical problem that the slag discharge at the rear of the full-face mechanical tunneling machine in the prior art cannot meet the requirements of inclined shaft tunnel tunneling, and the slag discharge is convenient. The operation of real-time deviation rectification is convenient, the tunneling accuracy is high, and high-precision one-time through tunneling construction of long inclined shafts is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the drawings and embodiments:

[0033] Figure 1 It is a schematic structural diagram of the present invention.

[0034] Figure 2 It is a schematic diagram of the overall construction structure of the present invention.

[0035] Figure 3 It is a schematic cross-sectional view when the raise boring machine of the present invention performs oblique jacking drilling.

[0036] Figure 4 It is a front view of the jacking section steel pipe of the present invention.

[0037] Figure 5 It is a top view of the jacking section steel pipe of the present invention.

[0038] Figure 6 It is Figure 3 A-A cross-sectional view of

[0039] Figure 7 It is Figure 3 B-B cross-sectional view of

[0040] Figure 8 It is a partially enlarged schematic view of the drill bit system.

[0041] In the figure: drill bit 1, slag collection hopper 2, seal 3, support ring 4, inner support 5, slag chute 6, pump station 7, locking device 8, jacking section steel pipe 9, thrust bearing 10, feed cylinder 11, deviation correction cylinder 12, bearing 13, transition section steel pipe 14, jacking cylinder 15, ball head 16, ball seat 17, base 18, inclination adjustment seat 19, inclination adjustment rod 20, workstation 21, drill slag 22, hydraulic motor 23, key 24, locking seat 25, inclination sensor 26, slag chute 27, inclination sensor 28, horizontal pilot tunnel 29, slag chute shaft 30, inclined shaft tunnel 31, external pump station 32, drive sleeve 33, full-face mechanical tunneling device 100, raise boring machine 200. Detailed implementation manners

[0042] Embodiment 1:

[0043] As Figure 1 shown in, a full-face mechanical tunneling device for an inclined shaft tunnel includes a support ring 4. The support ring 4 is movably sleeved with the drill bit 1. A drive sleeve 33 is provided at the tail of the drill bit 1. A hydraulic motor 23 is provided in the support ring 4. The hydraulic motor 23 is connected to the drive sleeve 33 and is used to drive the drive sleeve 33 to rotate.

[0044] A plurality of deviation correction cylinders 12 are further provided on the side wall of the support ring 4. The axis of the deviation correction cylinder 12 is along the radial direction of the support ring 4; that is, the deviation correction cylinder 12 expands and contracts along the radial direction of the support ring 4.

[0045] An inner support 5 is provided in the support ring 4. A feed cylinder 11 is provided between the inner support 5 and the drill bit 1. The feed cylinder 11 is used to push the drill bit 1 forward. With this structure, while the full-face mechanical tunneling device 100 is tunneling, the tunneling inclination angle of the full-face mechanical tunneling device 100 can be adjusted online according to the designed angle of the inclined shaft tunnel 31.

[0046] A preferred solution is as Figure 1 shown in. A seal 3 is provided between the support ring 4 and the drill bit 1. The outer diameter of the drill bit 1 is greater than the outer diameter of the support ring 4; with this structure, it is avoided that drill slag enters the support ring 4 and affects the operation of the moving parts.

[0047] The hydraulic motor 23 and the drive sleeve 33 are connected in a manner that can transmit torque and slide relative to each other. For example, they are connected by a spline structure, or they are slidably sleeved with each other in a polygonal structure. So that the drill bit 1 can also be driven to rotate when the drill bit 1 feeds forward.

[0048] In a preferred solution, one end of the feed cylinder 11 abuts against the inner support 5. The inner support 5 is an annular stepped structure. The other end of the feed cylinder 11 is connected to the drill bit 1 through a thrust bearing 10. The feed cylinder 11 is fixed relative to the support ring 4, and the feeding of the feed cylinder 11 does not affect the rotation of the drill bit 1.

[0049] The preferred solution is as follows Figure 1 In Figure 1 , the feed cylinder 11 is a through-hole cylinder, and the transmission sleeve 33 passes through the feed cylinder 11 and is connected to the hydraulic motor 23.

[0050] Alternatively, the feed cylinder 11 is a combination of multiple cylinders, and the multiple cylinders are distributed around the transmission sleeve 33 along the circumference. This example is not shown in the figure.

[0051] The preferred solution is as follows Figure 1 In Figure 1 , the hydraulic motor 23 is a through-hole hydraulic motor. The outer ring of the hydraulic motor 23 is fixedly connected to the support ring 4, and the inner ring of the hydraulic motor 23 is connected to the transmission sleeve 33 in a manner that can transmit torque and slide relative to each other; with this structure, large-torque transmission can be achieved.

[0052] Alternatively, there are multiple hydraulic motors 23. The fixed parts of the multiple hydraulic motors 23 are fixedly connected to the support ring 4, and the movable parts of the hydraulic motors 23 are connected to the transmission sleeve 33 through a transmission mechanism in a manner that can transmit torque and slide relative to each other. For example, a gear ring is fixedly provided on the outer wall of the transmission sleeve 33, and gears are provided on the shafts of the multiple hydraulic motors 23, where the thickness of the gears is greater than the thickness of the gear ring, so that the gear ring and the gears can slide relative to each other axially, so that the hydraulic motor 23 can also drive the drill bit 1 to rotate when the drill bit 1 feeds. The multiple hydraulic motors 23 are arranged around the transmission sleeve 33 and jointly drive the drill bit 1 to rotate. This example is not shown in the figure.

[0053] The preferred solution is as follows Figure 1 In Figure 1 , the bottom of the deviation correction cylinder 12 is connected to the transmission sleeve 33 through a bearing 13. The inner ring of the bearing 13 and the transmission sleeve 33 are in a sliding connection structure, that is, the inner ring of the bearing 13 and the transmission sleeve 33 can move axially relative to each other and can also rotate relative to each other. The cylinder block of the deviation correction cylinder 12 is fixedly provided on the support ring 4 through an inner support 5.

[0054] The preferred solution is as follows Figure 1 In Figure 1 , the deviation correction cylinder 12 is axially arranged in two layers, and each layer has multiple deviation correction cylinders 12. The cylinder blocks of the deviation correction cylinders 12 in each layer are all fixedly provided on the support ring 4, and the deviation correction cylinders 12 in each layer are in a rigid connection structure. With this structure, by controlling the pistons of the deviation correction cylinders 12 in each layer to extend different lengths, the inclination angle of the support ring 4 can be accurately adjusted online, thereby adjusting the drilling angle of the drill bit 1, which is convenient for realizing the online adjustment of the tunneling angle.

[0055] The preferred solution is as follows Figure 1 In Figure 1 , multiple hob cutters and scraping cutters are provided on the surface of the drill bit 1.

[0056] As in Figure 1In it, the full-face mechanical tunneling device 100 is provided with an inclination sensor 26, and a stroke sensor is provided on the deviation correction cylinder 12. The inclination sensor 26 adopts a combination of a gyroscope and a magnetic inertial navigation sensor. Through combined calculation, angle and displacement offset parameters are obtained to guide the drilling and deviation correction operations; the stroke sensor is used to control the piston rod stroke of the deviation correction cylinder 12 according to the detection parameters of the inclination sensor 26.

[0057] Embodiment 2:

[0058] As Figure 1 、 2 In it, a construction method using the above-mentioned full-face mechanical tunneling device for inclined shaft tunnels includes the following steps:

[0059] S1. A slag chute 30 with a diameter greater than 1 m is drilled in the section of the inclined shaft tunnel 31; in a preferred solution, as Figure 2 In it, a horizontal pilot tunnel 29 is excavated at the bottom of the inclined shaft tunnel 31. From the horizontal pilot tunnel 29, a slag chute 30 is excavated upward along the design axis of the inclined shaft tunnel 31 with a raise boring machine 200. A jacking cylinder 15 is arranged below the raise boring machine 200. The inclination of the raise boring machine 200 is controlled by an inclination adjustment seat 19 and an inclination adjustment rod 20. After drilling one footage, the raise boring machine 200 is locked, the jacking cylinder 15 retracts, a new jacking section steel pipe 9 is installed at the tail of the raise boring machine 200, and then the jacking cylinder 15 continues to jack up. Repeat the above steps to complete the construction of the slag chute 30;

[0060] As Figure 3 In it, the raise boring machine 200 is an important structure for implementing the solution of the present invention. The structure of the raise boring machine 200 is: it includes a bit system, a support ring 4 and a jacking cylinder 15; the bit system includes a bit 1, and the bit 1 is driven to rotate by a driving device. The bit system is also provided with a deviation correction device for deviation correction; a hollow channel is provided on the bit 1. The position near the top of the bit 1 forms a funnel-shaped slag collecting hopper 2, and the position far from the top of the bit 1 is a reduced-diameter hollow pipe structure. The hollow pipe structure forms a slag chute 6 for discharging drill cuttings. Preferably, the bit structure is spindle-shaped, with hob bits arranged at the front part and a "funnel-shaped" structure at the lower part. The rock cuttings drilled and cut are discharged through the large-diameter hollow drill pipe in the middle of the "funnel". Some parts of the raise boring machine 200 adopt the same components as those in the full-face mechanical tunneling device 100. For the convenience of understanding, the same names and marks are also used.

[0061] The support ring 4 is connected to the bit system. The support ring 4 includes jacking section steel pipes 9 that can be increased or decreased to adjust the length of the support ring 4; the jacking section steel pipes 9 are connected to the support ring 4 through flanges and bolts. The outer diameter of the bit 1 is greater than the outer diameter of the support ring 4. Preferably, the outer diameter of the bit 1 is about 2 cm greater than the outer diameter of the connecting flange of the support ring 4. The jacking cylinder 15 is used to jack up the support ring 4 and transmit the jacking force to the bit system. A further preferred solution is asFigure 3 , 8 In it, the structure of the drill bit system is as follows: There is a sliding seal connection between the drill bit 1 and the support ring 4, and a seal 3 is provided at the connection position to prevent drill cuttings from entering the support ring 4. The tail of the drill bit 1 is provided with a reduced-diameter pipe body, and the pipe body is connected to the hydraulic motor 23 in a way that can transmit torque and slide relative to each other; for example, the pipe body at the tail of the drill bit 1 is slidably connected to the hydraulic motor 23 through a spline structure, and the hydraulic motor 23 is a through-hole motor. An inner support 5 is provided on the support ring 4, and a feed cylinder 11 is provided between the drill bit 1 and the inner support 5. A thrust bearing 10 is provided between the feed cylinder 11 and the drill bit 1, and the feed direction of the feed cylinder 11 is the axial direction of the drill bit 1. By extending the piston rod of the feed cylinder 11, the drill bit 1 is driven to feed axially. The feed cylinder 11 is a through-hole cylinder, and the hollow pipe body at the tail of the drill bit 1 passes through the feed cylinder 11 and then is connected to the hydraulic motor 23. Preferably, the diameter of the drill bit 1 is greater than 1 m, and the inner diameters of the support ring 4, the jacking section steel pipe 9, and the transition section steel pipe 14 are not less than 90 cm to meet the needs of personnel to enter for measurement and maintenance. An inclination sensor 26 is provided inside the support ring 4 to feedback the inclination of the support ring 4. In this example, the inclination sensor 26 preferably uses a gyroscope to obtain the angular offsets of three vectors. Further preferably, the inclination sensor 26 uses a combination of a gyroscope and a magnetic inertial navigation sensor. Through combined calculation, angular and displacement offset parameters are obtained to guide the drilling and deviation correction operations. Since the raise boring machine of the present invention is always in a moving working condition, it is difficult to obtain relatively accurate detection data by using an acceleration sensor. Therefore, an acceleration sensor is not used. Further preferably, a stroke sensor is provided on the deviation correction cylinder 12. With this structure, it is convenient to control the piston rod stroke of the deviation correction cylinder 12 according to the detection parameters of the inclination sensor 26. Preferably, the stroke sensor provided on the deviation correction cylinder 12 uses a magnetostrictive stroke sensor. The preferred solutions are as Figure 3 , 8 In it, a slag collection hopper 2 and a slag chute 6 are provided in the middle of the drill bit 1, and the slag chute 6 is communicated with the inner cavity of the support ring 4; preferably, at the tail of the support ring 4, the jacking cylinder 15 is connected to the support ring 4 through the transition section steel pipe 14. Here, the support ring 4 includes the jacking section steel pipe 9, and the jacking cylinder 15 is a through-hole cylinder. The hollow parts of the support ring 4, the transition section steel pipe 14, and the jacking cylinder 15 all form the slag chute 6. A pump station 7 is also provided inside the support ring 4 to provide hydraulic oil for each hydraulic cylinder and driving device. The preferred solutions are as Figure 3 In it, a plurality of detachable jacking section steel pipes 9 are provided at the tail of the support ring 4. The specific structure of the jacking section steel pipe 9 is as Figure 4 , 5As shown in FIG, a plurality of protruding keys 24 are provided on the outer wall of the jacking section steel pipe 9. The keys 24 are arranged along the axial direction of the jacking section steel pipe 9 and are arranged along the circumference. The keys 24 are used to prevent the jacking section steel pipe 9 from rotating. Preferably, the key 24 is made of channel steel and serves as a pipe groove for water supply, air supply and power supply of the raise boring machine 200. It also serves as an anti-torsion key for engaging with the wellbore locking device 8 during the drilling process. The preferred solution is as follows Figure 3 In the embodiment, the jacking cylinder 15 is connected to the support ring 4; preferably, the jacking cylinder 15 is connected to the jacking section steel pipe 9 at the bottom of the support ring 4 through the transition section steel pipe 14. A ball head 16 is provided at the bottom of the jacking cylinder 15, which is movably connected to the ball seat 17, and the ball seat 17 is fixedly connected to the base 18; preferably, the ball head 16, the ball seat 17 and the base 18 all have hollow passages to facilitate the discharge of the drilling cuttings 22.

[0062] like Figure 3 In the embodiment, a tilt adjustment mechanism is provided on one side of the push cylinder 15. The tilt adjustment mechanism includes a tilt adjustment seat 19 connected to the push cylinder 15 or the support ring 4, and a tilt adjustment rod 20 connected to the tilt adjustment seat 19. The tilt adjustment mechanism is used to adjust the tilt angle of the support ring 4. Preferably, the structure of the tilt adjustment seat 19 can control the angle between the axis of the raise boring machine and the horizontal line to be no less than 50°.

[0063] like Figure 3 、 7 A locking device 8 is also fixed at the opening of the hole to lock the support ring 4. The locking device 8 is cast and fixed at the opening of the slag chute 30. The locking device 8 is a releasable and re-tightening clamp structure used to hold the jacking section steel pipe 9 on the support ring 4.

[0064] S2, such as Figure 1 In the process, the top of the inclined shaft tunnel is expanded to form an installation well, and guide rails are installed on the side walls of the installation well to guide the full-section mechanical tunneling device 100 into place until it is large enough to accommodate the full-section mechanical tunneling device 100;

[0065] S3. Install the full-face mechanical excavation device 100 as in Example 1;

[0066] S4. Activate the corrective cylinder 12, securing the full-face mechanical tunneling device 100 within the inclined tunnel. Specifically, the piston rod of the corrective cylinder 12 extends and presses against the inner wall of the inclined tunnel, initiating drilling with the full-face mechanical tunneling device 100. Specifically, the workstation 21 drives the external pump station 32 to supply high-pressure hydraulic oil to the hydraulic motor 23 and feed cylinder 11. The hydraulic motor 23 rotates the drill bit 1 through the transmission sleeve 33, extending the piston rod of the feed cylinder 11 to drive the drill bit 1 forward. Drill cuttings are discharged through the cuttings chute 30.

[0067] S5. After the tunneling depth reaches one feed stroke of the feed cylinder 11, retract the deviation correction cylinder 12 and the feed cylinder 11 so that the entire full-face mechanical tunneling device 100 moves forward under gravity; repeat steps S4 and S5 for tunneling, and perform measurement and deviation correction at any time during tunneling.

[0068] If it is difficult to control the deviation correction of the full-face mechanical tunneling device 100, stop tunneling, retract the deviation correction cylinder 12, start the feed cylinder 11 to let the full-face mechanical tunneling device 100 retreat, then extend the deviation correction cylinder 12 to reposition and fix the full-face mechanical tunneling device 100, and then retract the feed cylinder 11 and the drill bit 1 to resume tunneling.

[0069] An inclination sensor 26 is provided on the full-face mechanical tunneling device 100. The inclination sensor 26 adopts a combination of a gyroscope and a magnetic inertial navigation sensor. Through combined calculation, angle and displacement offset parameters are obtained to guide drilling and deviation correction operations; a stroke sensor is provided on the deviation correction cylinder 12 to facilitate controlling the piston rod stroke of the deviation correction cylinder 12 according to the detection parameters of the inclination sensor 26.

[0070] In a preferred solution, when the full-face mechanical tunneling device 100 tunnels to be close to the horizontal pilot tunnel 29, stop discharging the drill cuttings, let the horizontal pilot tunnel 29 be basically filled with drill cuttings, and then the full-face mechanical tunneling device 100 tunnels out of the hole.

[0071] The full-face construction of the inclined shaft tunnel is realized through the above steps.

[0072] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The embodiments and the features in the embodiments in this application can be arbitrarily combined with each other without conflict. The protection scope of the present invention should 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, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A construction method of a full-face mechanical tunneling device for inclined shaft tunnels, characterized in that: It includes a support ring (4), the support ring (4) is movably sleeved on the drill bit (1), a transmission sleeve (33) is provided at the tail of the drill bit (1), a hydraulic motor (23) is provided inside the support ring (4), and the hydraulic motor (23) is connected to the transmission sleeve (33) for driving the transmission sleeve (33) to rotate; On the side wall of the support ring (4), a plurality of deviation rectifying oil cylinders (12) are further provided, and the axes of the deviation rectifying oil cylinders (12) are along the radial direction of the support ring (4); An inner support (5) is provided inside the support ring (4), a feed oil cylinder (11) is provided between the inner support (5) and the drill bit (1), and the feed oil cylinder (11) is used for pushing the drill bit (1) to feed; The construction method includes the following steps: S1. Bore a slag chute (30) with a diameter greater than 1 m in the cross-section of the inclined shaft tunnel (31); Excavate a horizontal pilot tunnel (29) at the bottom of the inclined shaft tunnel (31), use a raise boring machine (200) to excavate the slag chute (30) upward along the axis of the inclined shaft tunnel (31) from the horizontal pilot tunnel (29), set a jacking oil cylinder (15) below the raise boring machine (200), after drilling one footage, lock the raise boring machine (200), retract the jacking oil cylinder (15), install a new jacking section steel pipe (9) at the tail of the raise boring machine (200), and then the jacking oil cylinder (15) continues to jack up. Repeat the above steps to complete the construction of the slag chute (30); The drill bit of the raise boring machine (200) is provided with a hollow channel, where the position near the top of the drill bit forms a funnel-shaped slag collecting hopper, and the position far from the top of the drill bit is a reduced-diameter hollow pipe structure, and the hollow pipe structure forms a slag chute for discharging drill slag; S2. Expand the excavation of the top of the inclined shaft tunnel until it is large enough to accommodate the full-face mechanical tunneling device (100); S3. Install the full-face mechanical tunneling device (100); S4. Start the deviation rectifying oil cylinders (12) to fix the full-face mechanical tunneling device (100) in the inclined shaft tunnel, and start the full-face mechanical tunneling device (100) to drill; The drill slag is discharged through the slag chute (30); S5. After the tunneling depth reaches one feed stroke of the feed oil cylinder (11), retract the deviation rectifying oil cylinders (12) and retract the feed oil cylinder (11) to make the entire full-face mechanical tunneling device (100) move forward under gravity; During the tunneling process, measure and correct the deviation at any time; The full-face construction of the inclined shaft tunnel is realized through the above steps.

2. The construction method of a full-face mechanical tunneling device for inclined shaft tunnels according to claim 1, characterized in that: A seal (3) is provided between the support ring (4) and the drill bit (1), and the outer diameter of the drill bit (1) is greater than the outer diameter of the support ring (4); The hydraulic motor (23) and the transmission sleeve (33) are connected in a way that can transmit torque and slide relative to each other.

3. The construction method of a full-face mechanical tunneling device for inclined shaft tunnels according to claim 1, characterized in that: One end of the feed oil cylinder (11) abuts against the inner support (5), and the other end is connected to the drill bit (1) through a thrust bearing (10).

4. The construction method of a full-face mechanical tunneling device for inclined shaft tunnels according to claim 1, characterized in that: The feed oil cylinder (11) is a through-hole oil cylinder, and the transmission sleeve (33) passes through the feed oil cylinder (11) and is connected to the hydraulic motor (23); Alternatively, the feed oil cylinder (11) is a combination of multiple oil cylinders, and the multiple oil cylinders are distributed around the transmission sleeve (33) along the circumference.

5. The construction method of a full-face mechanical tunneling device for inclined shaft tunnels according to claim 1, characterized in that: The hydraulic motor (23) described is a through-hole hydraulic motor. The outer ring of the hydraulic motor (23) is fixedly connected to the support ring (4), and the inner ring of the hydraulic motor (23) is connected to the transmission sleeve (33) in a manner that can transmit torque and slide relative to each other; Alternatively, there are multiple hydraulic motors (23). The fixed parts of the multiple hydraulic motors (23) are fixedly connected to the support ring (4), and the movable parts of the hydraulic motors (23) are connected to the transmission sleeve (33) through a transmission mechanism in a manner that can transmit torque and slide relative to each other. The multiple hydraulic motors (23) are arranged around the transmission sleeve (33).

6. The construction method of a full-face mechanical tunneling device for inclined shaft tunnels according to claim 1, characterized in that: The bottom of the deviation rectifying oil cylinder (12) is connected to the transmission sleeve (33) through a bearing (13). The inner ring of the bearing (13) is in a sliding connection structure with the transmission sleeve (33), and the deviation rectifying oil cylinder (12) is fixedly installed on the support ring (4) through an inner support (5).

7. The construction method of a full-face mechanical tunneling device for inclined shaft tunnels according to claim 6, characterized in that: The deviation rectifying oil cylinder (12) is axially arranged in two layers, and each layer has multiple deviation rectifying oil cylinders (12).

8. The construction method of a full-face mechanical tunneling device for inclined shaft tunnels according to any one of claims 1 to 7, characterized in that: The surface of the drill bit (1) is provided with multiple hob cutters and scrapers; The full-face mechanical tunneling device (100) is provided with an inclination sensor (26), and a stroke sensor is provided on the deviation rectifying oil cylinder (12).

9. The construction method of a full-face mechanical tunneling device for inclined shaft tunnels according to claim 1, characterized in that: When the full-face mechanical tunneling device (100) tunnels to be close to the horizontal pilot tunnel (29), stop discharging the drill cuttings, so that the horizontal pilot tunnel (29) is basically filled with drill cuttings, and then the full-face mechanical tunneling device (100) tunnels out of the hole; If it is difficult to control the deviation rectification of the full-face mechanical tunneling device (100), stop tunneling, retract the deviation rectifying oil cylinder (12), start the feed oil cylinder (11) to make the full-face mechanical tunneling device (100) retreat, then extend the deviation rectifying oil cylinder (12) to reposition and fix the full-face mechanical tunneling device (100), and then retract the feed oil cylinder (11) and the drill bit (1) to resume tunneling; An inclination sensor (26) is provided on the full-face mechanical tunneling device (100). The inclination sensor (26) adopts a combination of a gyroscope and a magnetic inertial navigation sensor. Through joint calculation, angle and displacement offset parameters are obtained to guide the drilling and deviation rectification operations; a stroke sensor is provided on the deviation rectifying oil cylinder (12) to facilitate controlling the piston rod stroke of the deviation rectifying oil cylinder (12) according to the detection parameters of the inclination sensor (26).

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