Tunnel self-walking advanced drilling equipment and construction method

Abstract

The invention relates to tunnel self-walking advanced drilling equipment and a construction method. The tunnel self-walking advanced drilling equipment comprises a walking chassis, an equipment platform, a telescopic supporting arm and a drilling operation platform. The walking chassis is provided with a driving mechanism and a retractable operation stabilizing mechanism; the equipment platform is arranged on the walking chassis through a first slewing mechanism; a hydraulic pump station, a high-pressure water pump station and a reel system are integrated on the equipment platform; the drilling operation platform is provided with a water hammer drilling machine, a second slewing mechanism and an adapter bracket; and the telescopic supporting arm is hinged between the equipment platform and the adapter bracket. Compared with the prior art, the drilling operation platform has the advantages that the position of the drilling operation platform is cooperatively adjusted through the telescopic supporting arm, the first rotating mechanism and the second rotating mechanism to achieve full-coverage operation on the tunnel face arch portion in a tunnel, occupied space is small, a walking system, a power system, a drilling system and other systems are integrated, and the integration level is high; and a water hammer drilling technology is also integrated, so that the deep hole drilling capability is improved.

Description

Technical Field

[0001] This invention relates to the field of tunnel engineering technology, specifically to a self-propelled advanced drilling equipment and construction method for tunnels. Background Technology

[0002] In drill-and-blast tunnel construction, advance drilling is a crucial step in predicting adverse geological sections and ensuring construction safety. Currently, this operation is generally carried out using equipment such as rock drills. However, rock drills are typically used for tunnel excavation, and their drilling depth is usually limited to 50 meters. Furthermore, their drilling efficiency is low in complex strata, making it difficult to effectively conduct advance drilling operations, which seriously affects the construction cycle and safety decisions.

[0003] When facing high-altitude drilling operations in tunnels, existing advanced drilling equipment is not designed for high-level drilling at the top of the tunnel and lacks efficient high-altitude work platforms. When drilling is required at high positions on the tunnel face arch (such as at the 9 o'clock, 10 o'clock, 2 o'clock and 3 o'clock positions and at a height of more than 3 meters), it is often necessary to build scaffolds and other facilities, which not only involves high labor intensity but also poses safety hazards, seriously restricting the safety and efficiency of tunnel construction.

[0004] To address the aforementioned issues and improve the mechanization level of tunnel pre-drilling, several integrated solutions have been disclosed in existing technologies. For example, Chinese patent document CN212508061U discloses a multi-tube drilling and injection integrated machine. This equipment integrates a chassis and a drilling and injection platform, and connects the water hammer and pipe drill components to a lifting platform, improving mechanization and construction efficiency while reducing safety risks. However, this solution employs a lifting platform and a lateral movement structure to achieve full coverage of the tunnel cross-section, resulting in a complex overall equipment structure and a large space occupation. Operating within the limited tunnel space, it is prone to interference with other equipment, affecting the workflow, and its flexibility remains insufficient. Furthermore, this solution utilizes multiple drilling rigs and multiple platforms, leading to a significant increase in equipment costs.

[0005] In summary, tunnel advance drilling has long faced problems such as limited drilling depth, dangers of high-altitude operations, and difficulty in balancing equipment integration and compactness. There is a need for a highly integrated and compact self-propelled advance drilling equipment for tunnels to achieve efficient deep hole drilling operations at any position of the tunnel face arch within narrow tunnels. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a tunnel self-propelled advanced drilling equipment and construction method, which can achieve full coverage of the tunnel face arch, and has a high level of integration and small space occupation.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a self-propelled advance drilling device for tunnels, comprising: The chassis is equipped with a drive mechanism and a retractable work stabilization mechanism. The equipment platform is mounted on the traveling chassis via a first slewing mechanism and rotates relative to the traveling chassis about a vertical axis; the equipment platform integrates a hydraulic pump station, a high-pressure water pump station, and a reel system; The telescopic support arm includes a support arm hinged to the equipment platform and a telescopic arm slidably connected to the support arm; The drilling platform includes a water hammer drill, a second rotary mechanism, and a transfer bracket; the second rotary mechanism is connected to the upper end of the transfer bracket, and the lower end of the transfer bracket is hinged to the free end of the telescopic arm; the water hammer drill rotates relative to the telescopic support arm about a vertical axis via the second rotary mechanism. The reel system includes a cable reel for connecting to an external power source and a water reel for connecting to an external water source; the low-pressure inlet of the high-pressure water pump station is connected to the water reel, and its high-pressure outlet is connected to the water hammer drill.

[0008] The beneficial effects of this plan are:

[0009] (1) In view of the issues of equipment specialization and efficiency, the present invention integrates the walking, power and drilling systems into one, forming a dedicated tunnel self-propelled advanced drilling equipment with a high level of integration. Compared with the traditional tunnel drilling adopts a decentralized and temporary operation mode, the tunnel self-propelled advanced drilling equipment of the present invention can move quickly, position and operate in the tunnel, and has high mobility and operation efficiency.

[0010] (2) In response to the problem of limited drilling depth, this invention integrates a water hammer drilling rig, a high-pressure water pump station and a water reel to form a high-pressure hydrodynamic system. It uses water hammer drilling technology to break through the traditional rock drill's drilling depth limit of only 50 meters, and greatly improves the deep hole drilling capability.

[0011] (3) In view of the problems of high-altitude operation and space occupation, the present invention adopts telescopic support arm, first rotation mechanism and second rotation mechanism to coordinate the position of drilling operation platform, so that water hammer drilling rig can flexibly carry out full coverage operation on the tunnel face arch. Its overall structure is simple and occupies little space.

[0012] Furthermore, the drive mechanism is a tracked walking mechanism.

[0013] Furthermore, the operation stabilization mechanism includes a hydraulic telescopic support and a plurality of hydraulic outriggers installed on the hydraulic telescopic support. The hydraulic telescopic support includes a fixed support, a first telescopic rod slidably connected to the fixed support longitudinally, and a second telescopic rod slidably connected to the first telescopic rod laterally. The hydraulic outriggers are vertically mounted on the second telescopic rod.

[0014] The beneficial effects of this solution are as follows: This invention realizes the extension and retraction of hydraulic outriggers and the adjustment of working position by using a stable hydraulic telescopic support. Not only can the hydraulic outriggers be retracted when the equipment needs to be moved or stored to reduce the overall size of the equipment, but the working position of the hydraulic outriggers can also be adjusted according to the actual working terrain and stability requirements, taking into account both working stability and space occupancy, and improving the overall flexibility of the equipment.

[0015] Furthermore, a first hydraulic cylinder for driving the support arm to swing is provided between the support arm and the equipment platform; a second hydraulic cylinder for driving the telescopic arm to extend and retract is provided between the support arm and the telescopic arm.

[0016] Furthermore, the telescopic arm has a single-section or multi-section structure.

[0017] The present invention also provides a method for advanced drilling construction, using the above-mentioned self-propelled advanced drilling equipment for tunnels, including the following steps: S1. Equipment positioning and stabilization: Control the drive mechanism to move the equipment to a predetermined position in the tunnel, and operate the operation stabilization mechanism to stabilize the equipment; S2. Equipment access to external energy: Unfold the reel system and connect the cable reel and the water reel to an external power source and an external water source, respectively; S3. Drilling tool installation: Install the water hammer and the first drill rod onto the water hammer drilling rig; S4. Multi-degree-of-freedom collaborative positioning and alignment: The telescopic support arm, the first slewing mechanism and the second slewing mechanism are coordinated to position the drilling platform to the target hole position, and then the water hammer drilling rig is controlled to adjust the position of the water hammer so that the water hammer is aligned with the target hole position; S5. Automatic water hammer drilling: Start the high-pressure water pump station and control the water hammer drill to drill into the rock strata to the set initial depth in automatic drilling mode; S6. Deep Hole Drilling: Control the water hammer drill to switch to automatic drilling mode for continuous drilling, and add new drill rods until the target hole depth is reached; S7. Drill rod removal and disassembly: Stop the high-pressure water pump station, control the water hammer drill to remove the drill rods from the rock formation and disassemble the drill rods one by one; S8. Hole location change and repetitive operation: Determine the next target hole location and repeat steps S4 to S7 until drilling operations for all target holes are completed; S9. Equipment Reset: After completing all drilling operations, shut down the water hammer drill, disassemble the water hammer and the first drill rod, adjust the drilling platform to its initial position, organize the cable reel and the water reel, retract the operation stabilization mechanism, and control the drive mechanism to transfer the equipment to the next construction point or parking area.

[0018] Furthermore, in step S4, the height range of the target hole is 1 meter to 13 meters.

[0019] The advantages of this scheme are that the height of the target borehole is set to 1 to 13 meters, and the telescopic support arm, the first slewing mechanism and the second slewing mechanism work together to achieve full coverage of the tunnel face arch. Its operating range and height far exceed the drilling range in conventional tunnel drilling technology, and it has wide applicability.

[0020] Furthermore, in step S4, the target hole is located at the 9 o'clock, 10 o'clock, 2 o'clock or 3 o'clock position on the arch of the face.

[0021] Furthermore, in step S5, the water hammer drills into the rock strata to an initial depth of 0.5 meters in automatic drilling mode.

[0022] Furthermore, in step S6, the target hole depth ranges from 100 meters to 200 meters.

[0023] The beneficial effects of this scheme are: setting the target hole depth to 100 to 200 meters and using water hammer drilling technology to achieve high-efficiency deep hole drilling, with a drilling depth far exceeding that of conventional tunnel drilling processes, which can provide more long-term and accurate geological forecasts for tunnel construction. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the tunnel self-propelled advanced drilling equipment during high-altitude operation, as shown in Example 1.

[0025] Figure 2 This is a schematic diagram of the lateral structure of the tunnel self-propelled advanced drilling equipment during high-altitude operations, as shown in Example 1.

[0026] Figure 3 This is a schematic diagram of the structure of the tunnel self-propelled advanced drilling equipment during low-altitude operation, as shown in Example 1.

[0027] Figure 4 This is a schematic diagram of the lateral structure of the tunnel self-propelled advanced drilling equipment during low-altitude operation, as shown in Example 1.

[0028] Figure 5 This is a schematic diagram of the working stabilization mechanism shown in Example 1.

[0029] Figure 6 This is a schematic diagram of the lateral structure of the operation stabilization mechanism shown in Embodiment 1.

[0030] Figure 7 This is a schematic diagram of the telescopic support arm shown in Embodiment 1.

[0031] Figure 8This is a schematic diagram of the operation status of the tunnel self-propelled advanced drilling equipment shown in Example 2.

[0032] Figures 1-8 middle: 1. Walking chassis; 11. Drive mechanism; 12. Working stabilization mechanism; 121. Hydraulic telescopic support; 1211. Fixed support; 1212. First telescopic rod; 1213. Second telescopic rod; 122. Hydraulic outriggers; 13. First slewing mechanism; 2. Equipment platform; 21. Hydraulic pump station; 22. High-pressure water pump station; 23. Reel system; 231. Cable reel; 232. Water reel; 3. Telescopic support arm; 31. Support arm; 32. Telescopic arm; 33. First hydraulic cylinder; 34. Second hydraulic cylinder; 4. Drilling platform; 41. Water hammer drilling rig; 42. Second rotary mechanism; 43. Adapter support; 5. Tunnel cross section; 51. Working face. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example 1

[0037] This embodiment provides a self-propelled advanced drilling device for tunnels, such as... Figures 1 to 4 As shown, it includes a traveling chassis 1, an equipment platform 2, a telescopic support arm 3, and a drilling operation platform 4.

[0038] In this embodiment, as Figure 2As shown, the walking chassis 1 is equipped with a drive mechanism 11, a work stabilization mechanism 12, and a first slewing mechanism 13.

[0039] The drive mechanism 11 is used to drive the equipment to move, enabling the equipment to have a certain self-propelled capability and to move and position quickly and efficiently within the tunnel. Preferably, in this embodiment, the drive mechanism 11 is a tracked walking mechanism, which enables the equipment to walk and park on uneven soil or rock surfaces within the tunnel, and has high adaptability to the complex construction environment within the tunnel.

[0040] The operation stabilization mechanism 12 deploys during drilling operations and provides stable support to the equipment, resisting the reaction force and vibration generated by the equipment during drill pipe drilling. Especially during deep hole drilling operations in tunnels, as the drill pipe is continuously extended and drilled, the operation stabilization mechanism 12 can prevent the equipment from shaking, which could lead to drill pipe deformation, jamming, or breakage, ensuring operational safety and efficiency.

[0041] Preferably, in this embodiment, the structure of the operation stabilization mechanism 12 is as follows: Figures 1 to 6 As shown, the system includes a hydraulic telescopic support 121 and four hydraulic outriggers 122 mounted on the hydraulic telescopic support 121. The hydraulic telescopic support 121 includes a fixed support 1211, a first telescopic rod 1212 slidably connected longitudinally to the fixed support 1211, and a second telescopic rod 1213 slidably connected laterally to the first telescopic rod 1212. The hydraulic outriggers 122 are vertically mounted on the second telescopic rod 1213. The deployed state of the hydraulic telescopic support 121 is as follows: Figure 1 and Figure 2 As shown, the retracted state of the hydraulic telescopic support 121 is as follows: Figure 3 and Figure 4 As shown.

[0042] The advantage of this setup is that the hydraulic outriggers 122 can be extended and retracted and their working positions adjusted by using the stable hydraulic telescopic bracket 121. This not only allows the hydraulic outriggers 122 to be retracted when the equipment needs to be moved or stored, thus reducing the overall size of the equipment, but also allows the working position of the hydraulic outriggers 122 to be adjusted according to the actual working terrain and stability requirements, balancing operational stability and space utilization, thereby improving the overall flexibility of the equipment.

[0043] It should be noted that in this embodiment, the hydraulic telescopic bracket 121 is provided with four hydraulic outriggers 122. This is merely a preferred embodiment, and those skilled in the art should understand that three, five, or more hydraulic outriggers 122 may also be provided. Furthermore, the sliding connection direction between the fixed bracket 1211 and the first telescopic rod 1212, and between the first telescopic rod 1212 and the second telescopic rod 1213, is adapted to the position of the hydraulic outriggers 122.

[0044] In this embodiment, as Figures 1 to 4 As shown, the equipment platform 2 integrates a hydraulic pump station 21, a high-pressure water pump station 22, and a reel system 23. The equipment platform 2 is mounted on the traveling chassis 1 via the first slewing mechanism 13, and the equipment platform 2 can rotate relative to the traveling chassis 1 about a vertical axis by driving the first slewing mechanism 13.

[0045] The hydraulic pump station 21 is connected to the water hammer drilling rig 41 on the drilling platform 4 and provides hydraulic power to the water hammer drilling rig 41. Figure 3 As shown, the reel system 23 includes a cable reel 231 for connecting to an external power source and a water reel 232 for connecting to an external water source. The low-pressure inlet of the high-pressure water pump station 22 is connected to the water reel 232, and its high-pressure outlet is connected to the water hammer drill 41 on the drilling platform 4.

[0046] The advantage of this setup is that it modularly integrates the hydraulic pump station 21, high-pressure water pump station 22, and reel system 23 onto the rotatable equipment platform 2, facilitating centralized equipment management, making the equipment layout more compact, and improving the efficiency of on-site preparation. Furthermore, the use of water hammer drilling technology can overcome the traditional rock drill's drilling depth limit of only 50 meters, significantly improving deep-hole drilling capabilities.

[0047] Preferably, in this embodiment, the structure of the telescopic support arm 3 is as follows: Figure 7 As shown. The telescopic support arm 3 includes a support arm 31 hinged to the equipment platform 2 and a telescopic arm 32 slidably connected to the support arm 31. A second hydraulic cylinder 34 for driving the telescopic arm 32 to extend and retract is provided between the support arm 31 and the telescopic arm 32. The two ends of the second hydraulic cylinder 34 are respectively fixed to the support arm 31 and the telescopic arm 32, and its extension and retraction direction is parallel to the movement direction of the telescopic arm 32. Figure 1-2 As shown, a first hydraulic cylinder 33 for driving the support arm 31 to swing is provided between the support arm 31 and the equipment platform 2. The two ends of the first hydraulic cylinder 33 are respectively hinged to the support arm 31 and the equipment platform 2. The equipment platform 2, the support arm 31 and the first hydraulic cylinder 33 form a triangular support structure.

[0048] Preferably, in this embodiment, the telescopic arm 32 is a single-section structure.

[0049] It should be noted that in this embodiment, the telescopic arm 32 adopts a single-section structure, which is only a preferred embodiment. Those skilled in the art should understand that the telescopic arm 32 can also adopt a multi-section structure.

[0050] In this embodiment, as Figures 2 to 4As shown, the drilling platform 4 is equipped with a water hammer drill 41, a second rotating mechanism 42, and a transfer bracket 43. The second rotating mechanism 42 is connected to the upper end of the transfer bracket 43, and the lower end of the transfer bracket 43 is hinged to the free end of the telescopic arm 32. The water hammer drill 41 is fixed on the drilling platform 4 and rotates relative to the telescopic support arm 3 about a vertical axis via the second rotating mechanism 42.

[0051] The advantage of this configuration is that, in this embodiment, the working position of the water hammer drill 41 can be changed by coordinating the adjustment of the first rotating mechanism 13, the second rotating mechanism 42 and the telescopic support arm 3 without moving the main body of the equipment. This allows for full coverage of the tunnel face arch. The overall structure is simple and occupies little space.

[0052] Example 2

[0053] This embodiment provides a method for advanced drilling construction, using the tunnel self-propelled advanced drilling equipment described in Embodiment 1, including the following steps:

[0054] Step S1. Equipment positioning and stabilization.

[0055] a) Clear the construction site inside the tunnel to ensure that the ground is relatively flat and free of large obstacles.

[0056] b) Control the drive mechanism 11 of the traveling chassis 1 to drive the equipment to the predetermined work area inside the tunnel. For example... Figure 7 As shown, the equipment is controlled to travel to the middle of tunnel section 5, and the drilling platform 4 is oriented towards the inside of the tunnel. The tunnel face 51 is arched, and the equipment mainly drills holes in the arched part of the tunnel face.

[0057] c) Operate the stabilizing mechanism 12, and sequentially control the first telescopic rod 1212 of the hydraulic telescopic support 121 to extend longitudinally and the second telescopic rod 1213 to extend laterally, so that the four hydraulic outriggers 122 move to a suitable support position; then, control the cylinders of each hydraulic outrigger 122 to extend the hydraulic outrigger 122 downward to contact the tunnel ground; adjust each hydraulic outrigger 122 to the predetermined pressure, and finally stabilize and level the entire equipment and lock it on the ground to prevent the equipment from shaking or displacing due to the reaction force generated by the subsequent high-intensity drilling operation.

[0058] Step S2. Connect the device to an external energy source.

[0059] Unfold the reel system 23 integrated on the equipment platform 2. Pull out the cable from the cable reel 231 and connect its plug to the pre-installed power distribution box inside the tunnel to provide stable power to the equipment. At the same time, pull out the water pipe from the water reel 232 and connect its connector to the outlet pipe of the water supply centrifugal pump arranged inside the tunnel to provide a low-pressure water source for the high-pressure water pump station 22.

[0060] Step S3. Drilling tool installation.

[0061] a) Coordinate the control of the telescopic support arm 3, the first slewing mechanism 13 and the second slewing mechanism 42 to adjust the drilling platform 4 to a safe height and position that is convenient for manual operation.

[0062] b) Transport the water hammer and drill pipe to the drilling platform 4, connect the first drill pipe to the water hammer and install it on the water hammer drilling rig 41.

[0063] Step S4. Multi-degree-of-freedom cooperative localization and centering.

[0064] a) Determine the coordinates of the target hole location on the working face 51. In this embodiment, as shown... Figure 7 As shown, target hole positions are set on the working face 51, especially at the 9 o'clock, 10 o'clock, 2 o'clock, or 3 o'clock positions on the arch of the working face. The height range of the target hole positions is 1 meter to 13 meters.

[0065] This embodiment achieves full coverage of the tunnel face arch through the coordinated operation of the telescopic support arm, the first slewing mechanism, and the second slewing mechanism. Its operating range and height far exceed the drilling range in conventional tunnel drilling processes. The height of the target hole is set to 1 to 13 meters, which can improve the applicability of the equipment.

[0066] b) Control the first slewing mechanism 13 to drive the entire equipment platform 2 and the telescopic support arm 3 and drilling platform 4 to rotate in the horizontal plane to adjust towards the target hole location; control the second slewing mechanism 42 to make the water hammer drill 41 rotate further in the horizontal plane so that the drilling direction of the water hammer drill 41 is perpendicular to the face 51; control each hydraulic cylinder of the telescopic support arm 3 to drive the telescopic support arm 3 to lift the drilling platform 4 to the height of the target hole location.

[0067] It should be noted that in this step, the operator uses a remote control to coordinate the control of the first slewing mechanism 13, the second slewing mechanism 42, and the telescopic support arm 3 to position the water hammer drill 41 in front of the target hole. The control of these three components is not in any particular order.

[0068] c) The water hammer drill 41 uses its own angle fine-tuning function to align the water hammer with the target hole position, ensuring drilling accuracy.

[0069] Step S5. Automatic water hammer drilling.

[0070] a) Start the high-pressure water pump station 22 to pressurize the low-pressure water conveyed by the water reel 232 and then convey it to the water hammer drill 41.

[0071] b) Activate the automatic drilling mode of the water hammer drill 41, causing the water hammer drill 41 to drive the water hammer to impact the rock strata to the set initial depth at a lower impact frequency and propulsion force, so as to form a stable guide hole and avoid damage to the water hammer or displacement of the drilling position due to excessive impact force. Preferably, in this embodiment, the initial depth is 0.5 meters.

[0072] Step S6. Deep hole drilling.

[0073] a) When the water hammer drilling depth reaches the set initial depth, control the water hammer drill 41 and switch to automatic drilling mode so that the water hammer can drill efficiently and continuously with the rated high impact frequency and propulsion speed.

[0074] (b) When the drill rod being drilled approaches its maximum drilling depth, drilling is stopped. After the water hammer drill 41 stops impacting and rotating, a new drill rod is attached to the end of the existing drill rod, and the water hammer drill 41 is restarted to continue drilling forward in automatic drilling mode. This rod attachment is repeated until the target hole depth is reached. Preferably, in this embodiment, the target hole depth is in the range of 100 meters to 200 meters.

[0075] This embodiment utilizes water hammer drilling technology to achieve high-efficiency deep hole drilling, with a drilling depth far exceeding that of conventional tunnel drilling processes. By setting the target hole depth between 100 and 200 meters, it can provide more long-term and accurate geological forecasts for tunnel construction.

[0076] Step S7. Drill pipe removal and disassembly.

[0077] a) After drilling at the current hole position is completed, stop the high-pressure water pump station 22 and cut off the high-pressure water supply.

[0078] (b) Control the water hammer drill 41 to slowly withdraw all drill rods and water hammers from the rock strata in sequence. Each time a drill rod is withdrawn, the operation of the water hammer drill 41 must be stopped and the end drill rod must be disassembled until all the attached drill rods are removed from the water hammer drill 41. The first drill rod and water hammer must be retained.

[0079] Step S8. Hole position conversion and repetitive operation.

[0080] After completing the drilling and rod removal at the current hole location and determining the next target hole location, repeat steps S4 to S7 until drilling operations at all target holes are completed.

[0081] Step S9. Reset the device.

[0082] a) After completing drilling operations at all target holes, shut down the water hammer drill 41.

[0083] b) Control the telescopic support arm 3, the first slewing mechanism 13, and the second slewing mechanism 42 to adjust the drilling platform 4 to a safe height and position suitable for manual operation. Subsequently, disassemble and store the first drill rod and water hammer from the water hammer drill rig 41.

[0084] c) Control the telescopic support arm 3, the first slewing mechanism 13 and the second slewing mechanism 42 to adjust the drilling platform 4 to the initial position.

[0085] d) Organize and put away the cables and water pipes in cable reel 231 and water pipe reel 232 respectively.

[0086] e) Operate the stabilizing mechanism 12 to retract each hydraulic outrigger 122, and at the same time retract the hydraulic telescopic bracket 121 to a compact state, minimizing the overall outline of the equipment. Then operate the drive mechanism 11 to transfer the equipment to the next construction point or parking area.

[0087] In summary, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-propelled advance drilling device for tunnels, characterized in that, include: The walking chassis (1) is equipped with a drive mechanism (11) and a retractable work stabilization mechanism (12). The equipment platform (2) is mounted on the walking chassis (1) via the first slewing mechanism (13) and rotates about the vertical axis relative to the walking chassis (1); the equipment platform (2) integrates a hydraulic pump station (21), a high-pressure water pump station (22) and a reel system (23). The telescopic support arm (3) includes a support arm (31) hinged to the equipment platform (2) and a telescopic arm (32) slidably connected to the support arm (31). The drilling platform (4) is equipped with a water hammer drill (41), a second rotating mechanism (42), and a transfer bracket (43); the second rotating mechanism (42) is connected to the upper end of the transfer bracket (43), and the lower end of the transfer bracket (43) is hinged to the free end of the telescopic arm (32); the water hammer drill (41) rotates about the vertical axis relative to the telescopic support arm (3) through the second rotating mechanism (42); The reel system (23) includes a cable reel (231) for connecting to an external power source and a water reel (232) for connecting to an external water source; the low-pressure inlet of the high-pressure water pump station (22) is connected to the water reel (232), and its high-pressure outlet is connected to the water hammer drill (41).

2. The tunnel self-propelled advanced drilling equipment according to claim 1, characterized in that, The drive mechanism (11) is a tracked walking mechanism.

3. The tunnel self-propelled advanced drilling equipment according to claim 1, characterized in that, The operation stabilization mechanism (12) includes a hydraulic telescopic support (121) and a plurality of hydraulic outriggers (122) installed on the hydraulic telescopic support (121). The hydraulic telescopic support (121) includes a fixed support (1211), a first telescopic rod (1212) that is longitudinally slidably connected to the fixed support (1211), and a second telescopic rod (1213) that is laterally slidably connected to the first telescopic rod (1212). The hydraulic outriggers (122) are vertically mounted on the second telescopic rod (1213).

4. The tunnel self-propelled advanced drilling equipment according to claim 1, characterized in that, A first hydraulic cylinder (33) for driving the support arm (31) to swing is provided between the support arm (31) and the equipment platform (2); a second hydraulic cylinder (34) for driving the telescopic arm (32) to extend and retract is provided between the support arm (31) and the telescopic arm (32).

5. The tunnel self-propelled advanced drilling equipment according to claim 4, characterized in that, The telescopic arm (32) has a single or multi-section structure.

6. A method for advanced drilling construction, using a tunnel self-propelled advanced drilling equipment as described in any one of claims 1 to 5, characterized in that, Includes the following steps: S1. Equipment positioning and stabilization: Control the drive mechanism (11) to drive the equipment to a predetermined position in the tunnel, and operate the operation stabilization mechanism (12) to stabilize the equipment; S2. Connecting the equipment to an external energy source: Unfold the reel system (23) and connect the cable reel (231) and the water reel (232) to an external power source and an external water source, respectively; S3. Drilling tool installation: Install the water hammer and the first drill rod onto the water hammer drilling rig (41); S4. Multi-degree-of-freedom collaborative positioning and alignment: The telescopic support arm (3), the first slewing mechanism (13) and the second slewing mechanism (42) are coordinated to position the drilling platform (4) to the target hole position, and then the water hammer drill (41) is controlled to adjust the position of the water hammer so that the water hammer is aligned with the target hole position; S5. Automatic water hammer drilling: Start the high-pressure water pump station (22) and control the water hammer drill (41) to drill into the rock strata to the set initial depth in automatic drilling mode; S6. Deep hole drilling: Control the water hammer drill (41) to switch to automatic drilling mode for continuous drilling, and add new drill rods until the target hole depth is reached; S7. Drill rod removal and disassembly: Stop the high-pressure water pump station (22), control the water hammer drill (41) to remove the drill rod from the rock formation and disassemble the drill rod one by one; S8. Hole location change and repetitive operation: Determine the next target hole location and repeat steps S4 to S7 until drilling operations for all target holes are completed; S9. Equipment Reset: After completing all drilling operations, shut down the water hammer drill (41), disassemble the water hammer and the first drill rod, adjust the drilling operation platform (4) to the initial position, organize the cable reel (231) and the water reel (232), retract the operation stabilization mechanism (12), and control the drive mechanism (11) to transfer the equipment to the next construction point or parking area.

7. The construction method according to claim 6, characterized in that, In step S4, the height range of the target hole is 1 meter to 13 meters.

8. The construction method according to claim 6, characterized in that, In step S4, the target hole is located at the 9 o'clock, 10 o'clock, 2 o'clock or 3 o'clock position on the arch of the tunnel face.

9. The construction method according to claim 6, characterized in that, In step S5, the water hammer drills into the rock strata to an initial depth of 0.5 meters in automatic drilling mode.

10. The construction method according to claim 6, characterized in that, In step S6, the target hole depth ranges from 100 meters to 200 meters.

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