Hydraulic multi-mode hole-forming drilling machine and method for TBM (Tunnel Boring Machine) tunnel

Abstract

The invention relates to a TBM tunnel hydraulic multi-mode hole-forming drilling machine and method. The TBM tunnel hydraulic multi-mode hole-forming drilling machine comprises a drilling machine body and an energy compensation system. The drilling machine body comprises a drilling machine base, a rotary oil cylinder, a drilling body support and a drilling rod mechanism, a thrust oil cylinder and a jacking oil cylinder are arranged on the drilling body support, the output end of the thrust oil cylinder is connected with the drilling rod mechanism and used for pushing the drilling rod mechanism to drill holes, and the output end of the jacking oil cylinder penetrates through the front end plate to be connected with a jacking support and used for jacking rock mass in a drilling area; the top support is provided with a pair of oppositely-arranged clamping oil cylinders, the clamping oil cylinders are perpendicular to the hydraulic drill rod, and the hydraulic drill rod is clamped and fixed when the two clamping oil cylinders stretch out. According to the invention, the design practicability is high, so that a small-size and small-torque drilling machine in a narrow space can realize deep hole drilling; the technical problems that the construction progress and quality are prone to being affected by complex geological conditions and the safety risk of operation in a tunnel is high when anchor cable deep hole forming is conducted in the TBM limited space at present can be solved.

Description

Technical Field

[0001] This invention relates to the field of TBM tunnel drilling technology, and more specifically, to a TBM tunnel hydraulic multimodal drilling rig and method. Background Technology

[0002] As highway, railway, and water conservancy projects in my country extend into challenging high-altitude mountainous areas, TBM (Tunnel Boring Machine) technology is gradually being promoted. During TBM tunnel construction, the stability of the surrounding rock becomes increasingly prominent, and anchor bolts and cables are crucial means and methods for controlling this stability. Prestressed anchor cable technology, as an effective method for surrounding rock reinforcement, is widely used in tunnel surrounding rock control engineering. However, due to the limited space in TBM tunnels, the complex construction process of prestressed anchor cables, and the high technical requirements, the construction quality directly affects the effectiveness of surrounding rock reinforcement. Therefore, in-depth research on prestressed anchor cable construction technology within the confined space of TBM tunnels is of great significance for improving the stability of the surrounding rock in TBM tunnels.

[0003] The construction of prestressed anchor cables within the confined space of TBM tunnels faces numerous technical challenges. First, the surrounding rock geological conditions of TBM tunnels are complex and variable, potentially containing weak interlayers, fracture zones, faults, and groundwater, leading to problems such as collapses, stuck drill bits, and leakage during drilling, affecting construction progress and quality. Second, operations within deep-buried tunnels pose high safety risks, including falls and rockfalls, placing higher demands on the safety of construction personnel and equipment operation. Third, controlling drilling accuracy is difficult. The deep drilling depth and precise inclination requirements within the confined space of TBM tunnels, influenced by geological conditions and equipment performance, can easily lead to deviations and hole collapses, affecting subsequent anchor cable installation and grouting effectiveness. In conclusion, the problems associated with deep anchor cable drilling within the confined space of TBMs urgently need to be addressed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to propose a TBM tunnel hydraulic multimodal drilling rig, which can solve the technical problems of the current TBM deep anchor cable drilling in confined space where the construction progress and quality are easily affected by complex geological conditions and the safety risks of operation in the tunnel are high. The present invention also aims to propose a hydraulic multimodal drilling method for TBM tunnels, which can solve the technical problems of the current deep drilling of anchor cables in the confined space of TBMs, where the construction progress and quality are easily affected by complex geological conditions and the safety risks of operation in the tunnel are high.

[0005] This invention provides the following technical solution: A TBM (Tunnel Boring Machine) hydraulic multimodal drilling rig includes a drilling rig body and an energy compensation system. The drilling rig body includes a drilling rig base, a rotary cylinder, a drill body support, and a drill rod mechanism. The rotary cylinder is mounted on the drilling rig base with its central axis extending horizontally. The output end of the rotary cylinder is connected to the drill body support. The drill body support includes a tail fin plate, a front end plate, and a reinforcing rod connecting the tail fin plate and the front end plate. The drill body support is equipped with a propulsion cylinder and a top support cylinder. The output end of the propulsion cylinder is connected to the drill rod mechanism and is used to propel the drill rod mechanism to drill holes. The output end of the top support cylinder passes through the front end plate and is connected to the top support, and is used to drive the top support to support the rock mass in the drilling area. The drill rod mechanism includes a rotary base, a hydraulic motor, a power head, and a hydraulic drill rod. The rotary base is connected to the output end of the feed cylinder. The hydraulic motor is mounted on the rotary base. The power head passes through the hydraulic motor and is connected to its output end. The front end of the power head is threadedly connected to the hydraulic drill rod and is driven by the hydraulic motor to rotate the hydraulic drill rod. A hydraulic drill bit is mounted at the front end of the hydraulic drill rod. An energy compensation system is connected to the rear end of the power head, supplies fluid to the hydraulic drill rod, and sprays a jet through the hydraulic drill bit. The top support is equipped with a pair of opposing clamping cylinders, which are perpendicular to the hydraulic drill rod. When the two clamping cylinders extend, they clamp and fix the hydraulic drill rod.

[0006] Furthermore, the energy compensation system includes a relay tank, a mixing chamber, a water tank, and a water pump. The relay tank is used to store abrasive. The water pump and the relay tank are respectively connected to the mixing chamber. The water pump is used to pump water from the water tank to the mixing chamber. The mixing chamber is connected to the rear end of the power head through a rotary joint.

[0007] Furthermore, an abrasive control valve is installed between the relay tank and the mixing chamber, and a first shut-off valve is installed between the rotary joint and the mixing chamber.

[0008] Furthermore, the TBM tunnel hydraulic multimodal drilling rig also includes an air pump, which is connected to the rear end of the power head and supplies high-pressure gas into the hydraulic drill rod.

[0009] Furthermore, a second shut-off valve is installed between the air pump and the power head.

[0010] Furthermore, the TBM tunnel hydraulic multimodal drilling rig also includes a hydraulic pump, which is used to drive the rotary cylinder, the propulsion cylinder, the support cylinder, the hydraulic motor, and the clamping cylinder.

[0011] Beneficial Effects: This invention provides a TBM (Tunnel Boring Machine) hydraulic multi-modal drilling rig. By incorporating an energy compensation system, it offers multiple hydraulic modes to assist the rig's operation: low-pressure water jet for cleaning rock debris, high-pressure water jet for impacting soft rock, and high-pressure abrasive water jet for impacting hard rock. These multiple hydraulic modes work in conjunction with the hydraulic drill bit, significantly improving the drilling capability. Furthermore, by providing gas power assistance to the rig through an air pump, high-pressure gas helps cool the drill bit, clean debris, and remove slag. The combined gas and hydraulic modes, along with the mechanical drill bit, facilitate drilling, enhancing the drilling rig's overall performance. It provides support for different geological formations, helping the drilling rig adapt to various complex geological conditions, thereby reducing the negative impact of complex geological conditions on drilling efficiency and hole quality. During drilling, the top support cylinder drives the top support to press against the rock wall, stabilizing the surrounding rock before the drilling rig completes the hole. In addition, the structural design of the power head and hydraulic drill rod, and the structure between the hydraulic drill rod, through the installation of hydraulic motors, propulsion cylinders, and clamping cylinders, realizes the automation of the drilling rig's propulsion, rotation, retraction, and drill rod replacement processes, reducing manual operations and improving operational efficiency and safety.

[0012] The present invention also provides the following technical solutions: A TBM tunnel hydraulic multimodal drilling method, implemented using a TBM tunnel hydraulic multimodal drilling rig according to the present invention, includes the following steps: S1. Assemble the drilling rig and install it on top of the TBM main platform; S2. Drive the output end of the rotary cylinder to rotate via a hydraulic pump, thereby rotating the main body of the drilling rig to a specified angle and holding it in place. S3. The output end of the top support cylinder pushes the top support to move towards the rock wall until the top support contacts and presses against the surrounding rock. S4. Drive the hydraulic motor to rotate in the forward direction, and at the same time, the propulsion cylinder drives the hydraulic drill rod to move towards the surrounding rock. Under the combined action of the hydraulic motor and the propulsion cylinder, the hydraulic drill bit cuts the surrounding rock at a certain speed and thrust. The hydraulic drill bit and the hydraulic drill rod enter the rock mass. S5. The increased torque of the hydraulic drill bit, when encountering hard or medium-hard rock with relatively hard rock cuttings, drives the water pump to deliver high-pressure fluid through the mixing chamber to the power head. This fluid then passes through the hydraulic drill rod and is sprayed forward by the hydraulic nozzle, producing a high-pressure water jet that assists the hydraulic drill bit in breaking the surrounding rock. The abrasive control valve is opened, allowing the abrasive in the relay tank to enter the mixing chamber and mix with water to form a high-pressure abrasive water flow. The hydraulic drill bit then sprays this high-pressure abrasive water jet forward, assisting the hydraulic drill bit in rapidly cutting the surrounding rock and helping the drill rod to backflow and transport rock cuttings. When the torque of the hydraulic drill bit decreases and the rock cuttings are relatively soft, the water pump is turned off and the air pump is started. The high-pressure gas generated by the air pump is injected into the rock and soil ahead through the power head, hydraulic drill rod and hydraulic drill bit. The high-pressure gas works with the hydraulic drill bit to break the rock and soil ahead and assists the drill rod in reverse discharge to move the rock cuttings. S6. Once the single hydraulic drill rod is fully drilled into the rock mass, two clamping cylinders extend towards each other, clamping and fixing the hydraulic drill rod so that it cannot rotate. The hydraulic motor begins to rotate in the opposite direction, the power head and the hydraulic drill rod disengage from the threaded engagement, the propulsion cylinder retracts, and the power head retracts at a certain speed. S7. Install a new hydraulic drill rod onto the power head, drive the hydraulic motor to rotate in both directions and push the power head forward with the propulsion cylinder, so that the head of the new hydraulic drill rod engages with the threaded tail of the previous hydraulic drill rod, and the two clamping cylinders retract to release the clamping of the previous hydraulic drill rod. S8. Repeat S4-S7, identify the rock mass properties based on the information of the rock mass and rock debris, and select an air pump or energy compensation system to work together during the drilling process.

[0013] Beneficial Effects: This invention provides a multi-modal hydraulic drilling method for TBM tunnels. Through an energy compensation system, it assists the drilling rig with multiple hydraulic modes: low-pressure water jet for cleaning rock debris, high-pressure water jet for impacting soft rock, and high-pressure abrasive water jet for impacting hard rock. The combined hydraulic modes and the hydraulic drill bit significantly enhance the drilling capability. Furthermore, the invention provides gas power assistance to the drilling rig via an air pump. High-pressure gas helps cool the drill bit, clean debris, and remove slag. The combined gas and hydraulic modes, along with the mechanical drill bit, facilitate drilling, reducing the impact of drilling rig malfunctions. It provides support for different geological formations, helping the drilling rig adapt to various complex geological conditions, thereby reducing the negative impact of complex geological conditions on drilling efficiency and hole quality. During drilling, the top support cylinder drives the top support to press against the rock wall, stabilizing the surrounding rock before the drilling rig completes the hole. In addition, the structural design of the power head and hydraulic drill rod, as well as the structure between the hydraulic drill rod, realizes the automation of the drilling rig's propulsion, rotation, retraction, and drill rod replacement processes through hydraulic motors, propulsion cylinders, and clamping cylinders, reducing manual operations and improving operational efficiency and safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment 1 of the TBM tunnel hydraulic multimodal drilling rig of the present invention; Figure 2 This is a schematic diagram of the main body of the drilling rig in a specific embodiment 1 of the present invention, which is a TBM tunnel hydraulic multimodal drilling rig. Reference numerals in the attached drawings: 1-Drill rig body; 11-Drill body support; 111-Reinforcing rod; 112-Propulsion cylinder; 113-Rotating base; 114-Power head; 115-Hydraulic motor; 116-Hydraulic drill rod; 117-Hydraulic drill bit; 121-Top support cylinder; 13-Clamping cylinder; 14-Tail wing plate; 151-Rotating cylinder; 152-Drilling rig base; 16-Front end plate; 2-Energy compensation system; 21-Relay tank; 22-Upper end cover; 23-Mixing chamber; 24-Handle; 25-Tank support; 26-Water tank; 27-Water pump; 29-First shut-off valve; 3-Air pump; 31-Second shut-off valve; 4-Oil tank; 41-Hydraulic pump. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings.

[0016] Specific embodiment 1 of the present invention of a TBM tunnel hydraulic multimodal drilling rig: like Figures 1-2 As shown, this invention provides a TBM (Tunnel Boring Machine) hydraulic multimodal drilling rig. A TBM (Tunnel Boring Machine) hydraulic multimodal drilling rig includes a drilling rig body 1 and an energy compensation system 2. The drilling rig body 1 includes a drilling rig base 152, a rotary cylinder 151, a drill body support 11, and a drill rod mechanism. The rotary cylinder 151 is mounted on the drilling rig base 152 and its central axis extends horizontally. The output end of the rotary cylinder 151 is connected to the drill body support 11. The rotary cylinder can drive the drill body support to rotate and adjust its tilt posture, thereby realizing the adjustment of the drilling position of the drilling rig at different points. The drill body support 11 includes a tail fin plate 14, a front end plate 16, and several reinforcing rods 111 connected between the tail fin plate 14 and the front end plate 16. The drill body support 11 is equipped with a propulsion cylinder 112 and a top support cylinder 12. The output end of the propulsion cylinder 112 is connected to the drill rod mechanism and is used to propel the drill rod mechanism to drill holes. The output end of the top support cylinder 12 passes through the front end plate and is connected to the top support 121 and is used to support the rock mass in the drilling area and firmly fix the rock mass near the surrounding rock to be drilled.

[0017] The drill rod mechanism includes a rotary base 113, a hydraulic motor 115, a power head 114, and a hydraulic drill rod 116. The rotary base 113 is connected to the output end of the propulsion cylinder 112. The hydraulic motor 115 is mounted on the rotary base 113. The power head 114 passes through the hydraulic motor 115 and is connected to its output end. The front end of the power head 114 is threadedly connected to the hydraulic drill rod 116, thus the power head can be driven by the hydraulic motor 115 to rotate the hydraulic drill rod 116. The hydraulic drill rod 116 has a fluid channel inside for fluid to pass through. A hydraulic drill bit 117 is mounted at the front end of the hydraulic drill rod 116. The hydraulic drill bit 117 has a jet channel, allowing high-pressure fluid to pass through the hydraulic drill rod and be ejected as a high-pressure jet from the hydraulic drill bit 117. In this invention, the hydraulic drill rods are connected to each other and to the power head via threads.

[0018] The rear end of the power head 114 is connected to a rotary joint. The energy compensation system is connected to the power head 114 via the rotary joint, and then supplies fluid to the hydraulic drill rod 116. The energy compensation system includes a relay tank 21, a mixing chamber 23, a water tank 26, and a water pump 27. The relay tank 21 is used to store abrasive, and its top is provided with an upper end cover 22 and fixed by a lower tank support 25. The water tank 26 is used to store water, and the water pump 27 is used to pump the water in the water tank 26 to the mixing chamber 23. The water pump 27 and the relay tank 21 are respectively connected to the mixing chamber 23. An abrasive control valve is provided between the relay tank 21 and the mixing chamber 23. In this embodiment, the abrasive control valve is a manual valve, and the descent and cut-off of the abrasive in the relay tank are controlled by the control handle 24. It is a key component for regulating the water jet type. The mixing chamber 23 is connected to the rear end of the power head via a rotary joint, and supplies fluid to the hydraulic drill rod 116.

[0019] The invention also includes an air pump 3, a hydraulic pump 41, and an oil tank 4. The air pump 3 is also connected to the rear end of the power head via a rotary joint, and can supply high-pressure gas to the interior of the hydraulic drill rod 116. The hydraulic pump 41 is connected to the oil tank 4, and is used to drive the rotary cylinder, the propulsion cylinder, the support cylinder, the hydraulic motor, and the clamping cylinder. A first shut-off valve 29 is provided between the rotary joint and the mixing chamber 23. The first shut-off valve 29 helps to control the output of hydraulic energy and guide the output of high-pressure gas, and remains normally closed during the output of pneumatic energy. A second shut-off valve 31 is provided between the rotary joint and the air pump 3. The second shut-off valve 31 helps to control the output of pneumatic energy and guide the output of hydraulic energy, and remains normally closed during the output of hydraulic energy.

[0020] In addition, the top support 121 is provided with a pair of clamping cylinders 13 facing each other. The clamping cylinders 13 are perpendicular to the hydraulic drill rod 116. When the two clamping cylinders 13 extend, they clamp the hydraulic drill rod 116 so as to fix the hydraulic drill rod 116 when changing the drill rod.

[0021] In this invention, the energy compensation system 2 and the air pump 3 provide energy compensation for the drilling rig body 1. Under different geological conditions, the hydraulic or high-pressure gas is used in conjunction with the hydraulic drill bit to enable the drilling rig with small volume and low torque to achieve deep hole drilling in narrow spaces. When encountering weak and broken surrounding rock, high-pressure abrasive water jet or high-pressure gas jet can be used to impact the rock mass in front to achieve special rock breaking with small disturbance of the rock and soil.

[0022] Based on the above-mentioned TBM tunnel hydraulic multimodal drilling rig, this invention provides a TBM tunnel hydraulic multimodal drilling method, but this method is not limited to the implementation of the TBM tunnel hydraulic multimodal drilling rig of this invention, and includes the following steps: S1. Assemble the drilling rig and install it on top of the TBM main platform; S2. Drive the output end of the rotary cylinder to rotate via a hydraulic pump, thereby rotating the main body of the drilling rig to a specified angle and holding it in place. S3. The output end of the top support cylinder pushes the top support to move towards the rock wall until the top support contacts and presses against the surrounding rock. S4. Drive the hydraulic motor to rotate in the forward direction (rotation in the direction of tightening the power head and the hydraulic drill rod is forward, and rotation in the opposite direction is reverse), while the propulsion cylinder drives the hydraulic drill rod to move towards the surrounding rock. Under the combined action of the hydraulic motor and the propulsion cylinder, the hydraulic drill bit cuts the surrounding rock at a certain speed and thrust, and the hydraulic drill bit and the hydraulic drill rod enter the rock mass. S5. The torque of the hydraulic drill bit increases. When encountering hard or medium-hard rock with relatively hard rock cuttings, the water pump is activated, opening the first shut-off valve 29. High-pressure fluid is sent to the power head through the mixing chamber, and then through the hydraulic drill rod and the hydraulic nozzle to spray high-pressure water jets forward onto the rock and soil. The high-pressure water jets assist the hydraulic drill bit in breaking the surrounding rock. The abrasive control valve is opened, and the abrasive in the relay tank enters the mixing chamber and mixes with water to form a high-pressure abrasive water flow. The hydraulic drill bit sprays high-pressure abrasive water jets forward onto the rock and soil. The high-pressure abrasive water jets assist the hydraulic drill bit in quickly cutting the surrounding rock and assist the drill rod in backflow and transporting rock cuttings. When the torque of the hydraulic drill bit decreases and the rock cuttings are relatively soft, the water pump is turned off and the air pump is started. The second shut-off valve 31 is opened. The high-pressure gas generated by the air pump is injected into the rock and soil ahead through the power head, hydraulic drill rod and hydraulic drill bit. The high-pressure gas works with the hydraulic drill bit to break the rock and soil ahead and assist the drill rod in reverse discharge to move the rock cuttings. S6. Once the single hydraulic drill rod is fully drilled into the rock mass, two clamping cylinders extend towards each other, clamping and fixing the hydraulic drill rod so that it cannot rotate. The hydraulic motor begins to rotate in the opposite direction, the power head and the hydraulic drill rod disengage from the threaded engagement, the propulsion cylinder retracts, and the power head retracts at a certain speed. S7. Install a new hydraulic drill rod onto the power head, drive the hydraulic motor to rotate in both directions and push the power head forward with the propulsion cylinder, so that the head of the new hydraulic drill rod engages with the threaded tail of the previous hydraulic drill rod, and the two clamping cylinders retract to release the clamping of the previous hydraulic drill rod. S8. Repeat S4-S7, identify the rock mass properties based on the information of the rock mass and rock debris, and select an air pump or energy compensation system to work together during the drilling process.

[0023] This invention provides the drilling rig with the following capabilities through an energy compensation system: low-pressure water jet for cleaning rock debris, high-pressure water jet for impacting soft rock, and high-pressure abrasive water jet for impacting hard rock. Multiple hydraulic modes work in conjunction with the hydraulic drill bit, significantly improving the drilling capacity. An air pump provides gas power assistance to the drilling rig, with high-pressure gas aiding in drill bit cooling, debris removal, and discharge. The combined gas and hydraulic modes, working in conjunction with the mechanical drill bit, support the drilling rig in different geological formations, helping it adapt to various complex geological conditions and minimizing the negative impacts on drilling efficiency and hole quality. During drilling, the top support cylinder drives the top support to press against the rock wall, stabilizing the surrounding rock before drilling. Furthermore, the structural design of the power head and hydraulic drill rod, including the use of hydraulic motors, propulsion cylinders, and clamping cylinders, automates the drilling rig's propulsion, rotation, retraction, and drill rod replacement processes, reducing manual labor and improving operational efficiency and safety.

[0024] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A TBM (Tunnel Boring Machine) hydraulic multimodal drilling rig, characterized in that, The system includes a drilling rig body and an energy compensation system. The drilling rig body includes a drilling rig base, a rotary cylinder, a drill body support, and a drill rod mechanism. The rotary cylinder is mounted on the drilling rig base with its central axis extending horizontally. The output end of the rotary cylinder is connected to the drill body support. The drill body support includes a tail fin plate, a front end plate, and a reinforcing rod connecting the tail fin plate and the front end plate. The drill body support is equipped with a propulsion cylinder and a top support cylinder. The output end of the propulsion cylinder is connected to the drill rod mechanism and is used to propel the drill rod mechanism to drill holes. The output end of the top support cylinder passes through the front end plate and is connected to the top support, and is used to drive the top support to support the rock mass in the drilling area. The drill rod mechanism includes a rotary base, a hydraulic motor, a power head, and a hydraulic drill rod. The rotary base is connected to the output end of the feed cylinder. The hydraulic motor is mounted on the rotary base. The power head passes through the hydraulic motor and is connected to its output end. The front end of the power head is threadedly connected to the hydraulic drill rod and is driven by the hydraulic motor to rotate the hydraulic drill rod. A hydraulic drill bit is mounted at the front end of the hydraulic drill rod. An energy compensation system is connected to the rear end of the power head, supplies fluid to the hydraulic drill rod, and sprays a jet through the hydraulic drill bit. The top support is equipped with a pair of opposing clamping cylinders, which are perpendicular to the hydraulic drill rod. When the two clamping cylinders extend, they clamp and fix the hydraulic drill rod.

2. The TBM tunnel hydraulic multi-modal drilling rig as described in claim 1, characterized in that, The energy compensation system includes a relay tank, a mixing chamber, a water tank, and a water pump. The relay tank is used to store abrasive. The water pump and the relay tank are connected to the mixing chamber. The water pump is used to pump water from the water tank to the mixing chamber. The mixing chamber is connected to the rear end of the power head through a rotary joint.

3. The TBM tunnel hydraulic multi-modal drilling rig as described in claim 2, characterized in that, An abrasive control valve is installed between the relay tank and the mixing chamber, and a first shut-off valve is installed between the rotary joint and the mixing chamber.

4. A TBM (Tunnel Boring Machine) hydraulic multimodal drilling rig as described in any one of claims 1-3, characterized in that, It also includes an air pump, which is connected to the rear end of the power head and supplies high-pressure gas into the hydraulic drill pipe.

5. The TBM tunnel hydraulic multi-modal drilling rig as described in claim 4, characterized in that, A second shut-off valve is installed between the air pump and the power head.

6. The TBM tunnel hydraulic multi-modal drilling rig as described in claim 5, characterized in that, It also includes a hydraulic pump, which is used to drive the rotary cylinder, the propulsion cylinder, the support cylinder, the hydraulic motor, and the clamping cylinder.

7. A hydraulic multimodal drilling method for TBM tunnels, characterized in that, The implementation of a TBM tunnel hydraulic multimodal drilling rig according to claim 6 includes the following steps: S1. Assemble the drilling rig and install it on top of the TBM main platform; S2. Drive the output end of the rotary cylinder to rotate via a hydraulic pump, thereby rotating the main body of the drilling rig to a specified angle and holding it in place. S3. The output end of the top support cylinder pushes the top support to move towards the rock wall until the top support contacts and presses against the surrounding rock. S4. Drive the hydraulic motor to rotate in the forward direction, and at the same time, the propulsion cylinder drives the hydraulic drill rod to move towards the surrounding rock. Under the combined action of the hydraulic motor and the propulsion cylinder, the hydraulic drill bit cuts the surrounding rock at a certain speed and thrust. The hydraulic drill bit and the hydraulic drill rod enter the rock mass. S5. The increased torque of the hydraulic drill bit, when encountering hard or medium-hard rock with relatively hard rock cuttings, drives the water pump to deliver high-pressure fluid through the mixing chamber to the power head. This fluid then passes through the hydraulic drill rod and is sprayed forward by the hydraulic nozzle, producing a high-pressure water jet that assists the hydraulic drill bit in breaking the surrounding rock. The abrasive control valve is opened, allowing the abrasive in the relay tank to enter the mixing chamber and mix with water to form a high-pressure abrasive water flow. The hydraulic drill bit then sprays this high-pressure abrasive water jet forward, assisting the hydraulic drill bit in rapidly cutting the surrounding rock and helping the drill rod to backflow and transport rock cuttings. When the torque of the hydraulic drill bit decreases and the rock cuttings are relatively soft, the water pump is turned off and the air pump is started. The high-pressure gas generated by the air pump is injected into the rock and soil ahead through the power head, hydraulic drill rod and hydraulic drill bit. The high-pressure gas works with the hydraulic drill bit to break the rock and soil ahead and assists the drill rod in reverse discharge to move the rock cuttings. S6. Once the single hydraulic drill rod is fully drilled into the rock mass, two clamping cylinders extend towards each other, clamping and fixing the hydraulic drill rod so that it cannot rotate. The hydraulic motor begins to rotate in the opposite direction, the power head and the hydraulic drill rod disengage from the threaded engagement, the propulsion cylinder retracts, and the power head retracts at a certain speed. S7. Install a new hydraulic drill rod onto the power head, drive the hydraulic motor to rotate in both directions and push the power head forward with the propulsion cylinder, so that the head of the new hydraulic drill rod engages with the threaded tail of the previous hydraulic drill rod, and the two clamping cylinders retract to release the clamping of the previous hydraulic drill rod. S8. Repeat S4-S7, identify the rock mass properties based on the information of the rock mass and rock debris, and select an air pump or energy compensation system to work together during the drilling process.

Images