Comprehensive rock drift rapid tunneling equipment and use method

Abstract

The invention discloses comprehensive rock drift rapid tunneling equipment and a using method thereof.According to the tunneling equipment, a drilling and anchoring integrated multifunctional drilling machine is arranged on one side of a cantilever type tunneling machine body, and a temporary supporting mechanism is arranged above an oscillation cutting part; a deep hole is formed in a to-be-crushed rock by utilizing the multifunctional drilling machine, the deep hole is further expanded and cracked by utilizing the pulsating fracturing system, the strength of a rock mass is weakened, then the rock mass is milled by adopting the oscillating cutting part, and finally, the rock mass is anchored and protected by utilizing the multifunctional drilling machine and the temporary supporting device, so that a guarantee is provided for an operation environment. According to the equipment and the technology, a traditional roadway tunneling procedure is simplified into a continuous procedure, the tunneling efficiency of roadway rock mass is greatly improved, and meanwhile the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a comprehensive rock tunnel rapid excavation equipment and a use method thereof. Background Art

[0002] Coal mining in my country is mainly carried out in underground mining, and tunneling is the key prerequisite for coal mining. With the continuous improvement of coal mining technology and equipment, tunneling work is also facing higher requirements. At present, the total length of newly excavated tunnels in my country reaches 12,000 kilometers each year, of which more than 80% are coal tunnels. However, tunneling still uses traditional processes such as drilling, charging, blasting, transportation, and construction. The average tunneling speed of coal tunnels is less than 200 meters per month, and the number of workers required exceeds 700,000. The slow tunneling speed, large number of people, and low level of intelligence have led to tight connection between mining and excavation, and low tunneling efficiency has become the main factor restricting safe and efficient coal mining. The cantilevered tunneling machine is the core equipment for tunneling. It has the ability to adapt to various geological conditions, has a high degree of mechanization, is flexible and maneuverable, and can be used in conjunction with a variety of subsequent equipment. At present, a complete and efficient tunneling system has not been formed on the tunneling working face. There are a series of problems such as imbalance in excavation, support, transportation, and auxiliary, which cannot give full play to the cutting ability of the tunneling machine, and the intelligence level of the equipment is not high, the correlation between systems is not strong, and centralized control cannot be achieved. Therefore, how to achieve mechanized and efficient crushing of super-hard rock in coal mines has become a key issue and difficulty in rapid excavation of hard rock tunnels.

[0003] In recent years, advanced drilling technology and equipment have carried out innovative practices in three aspects: integrated excavation and exploration, rapid advanced exploration, and comprehensive detection technology based on directional drilling, providing reference for tunnel excavation work. The traditional operation of cantilevered tunnel boring machine + anchor drilling machine will be eliminated, and the equipment model of excavation, support and transportation will gradually emerge. The EBZ160T, EBZ220T, EBZ260T and other series of integrated excavation machines produced by China Coal Technology and Engineering Group Taiyuan Research Institute and Shijiazhuang Coal Mine Machinery Company have been used underground in large and medium-sized coal mines. The drilling rig is installed on the side of the fuselage and drills at different angles through a two-stage telescopic cylinder. Drilling is carried out before construction, and the drilling rig is pushed out from one side of the fuselage to the designated position. After the drilling construction is completed, it returns to the original position without affecting normal excavation. Under the condition of ensuring the normal operation of the tunnel boring machine, it can effectively complete the drilling detection and support of the comprehensive excavation working face, roof, floor and a certain range of the two sides in conjunction with the temporary support device. Under the premise that geological conditions permit, different equipment is used for segmented synchronous support to achieve the purpose of improving excavation efficiency.

[0004] Pulse hydraulic fracturing is a rock fracturing method based on the improvement of traditional hydraulic fracturing technology. It is widely used in the fields of oil and gas extraction, coal hard rock excavation, underground engineering construction, etc. The traditional hydraulic fracturing method injects high-pressure fluid into the borehole, using the rock's compressive but not tensile properties to form cracks, thereby reducing the strength of the rock mass and facilitating subsequent mining. However, the traditional hydraulic fracturing method has problems such as high energy consumption, difficulty in control, and rock stress concentration. Especially in high-hardness rock formations and complex geological conditions, continuous high pressure may cause non-uniform damage to the rock mass, affecting the stability and safety of the excavation process. Therefore, pulse hydraulic fracturing technology has gradually become an important improvement plan. The pulse hydraulic fracturing method is used to directionally fracture the hard rock mass of the tunnel excavation working face into a plate-like rock of a certain thickness, and then the alloy roller is used for oscillating cutting to improve the rock crushing efficiency. Therefore, excavation equipment that integrates drilling, support, and cutting can realize centralized and visual control between tunnels, which can reduce excavation time compared to traditional operations. Moreover, the comprehensive excavation operation line has a higher degree of mechanization, automation, and intelligence, and is a potential way to achieve efficient and rapid tunnel excavation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a comprehensive rock tunnel rapid excavation equipment and a use method.

[0006] In order to solve the above technical problems, the present invention provides a technical solution: a comprehensive rock tunnel rapid excavation equipment, the excavation equipment comprising:

[0007] The crawler-type main frame serves as the supporting platform of the overall structure;

[0008] The oscillating cutting part is arranged on the crawler main frame, and comprises an oscillating cutting head and a telescopic part, and the rock formation is cut by the telescopic part and the vibration of the oscillating cutting head;

[0009] A multifunctional drilling rig, which is installed on one side of the crawler main frame, is used to drill holes in the rock formation and install anchor bolts;

[0010] The pulsating fracturing system is connected to the oscillating cutting part and arranged behind the telescopic part, and fractures the rock formation by generating hydraulic pulses to improve the cutting efficiency;

[0011] Temporary support mechanism, which is set in front of the crawler main frame and is used to provide temporary support during the excavation process;

[0012] The loading mechanism is arranged below the oscillating cutting part, and comprises a shovel plate and a star wheel conveying device arranged on the shovel plate, and is used for collecting and loading the cut coal and rock;

[0013] A conveyor belt is arranged behind the loading mechanism and connected to the loading mechanism, and is used to transport coal and rock to the rear of the tunneling equipment;

[0014] The rear support part is arranged at the rear of the crawler main frame and is used to stabilize the position of the excavation equipment during the working process.

[0015] Furthermore, the oscillating cutting part is rotatably connected to the front end of the telescopic part through a connecting piece, telescopic cylinders are rotatably provided at the upper and lower parts of the pulsating fracturing system, and the output ends of the telescopic cylinders arranged upper and lower are rotatably connected to the hinge supports arranged upper and lower parts of the oscillating cutting part respectively.

[0016] Further, the oscillating cutting head comprises an alloy hob, a front end cover, a front shell, a front sleeve, a rear sleeve and a rear shell;

[0017] The alloy hob is fixed to the front end of the front cover by bolts, forming the main component of the cutting operation;

[0018] The rear sleeve is connected to the front end of the rear housing by bolts and extends to the interior of the rear housing;

[0019] An eccentric block shaft is rotatably arranged inside the rear sleeve through two deep groove ball bearings, wherein the front part of the front deep groove ball bearing is also provided with an eccentric block shaft end cover, and the front part of the rear deep groove ball bearing is provided with a sleeve for adapting to the eccentric block shaft;

[0020] The rear part of the deep groove ball bearing at the rear end is also equipped with an eccentric shaft motor through a motor sleeve and a bearing sleeve, and the output end of the eccentric shaft motor is connected to the eccentric block shaft. The front sleeve is installed on the front end of the rear sleeve by bolts, and the front end cover is rotatably arranged at the front end of the front sleeve through a cylindrical roller bearing, and a retaining ring is also provided on the inner side of the cylindrical roller bearing.

[0021] Furthermore, the multifunctional drilling rig includes a sliding platform, a walking mechanism, a mechanical arm, a rotary platform, a drilling rig guide rail and a drilling machine;

[0022] The sliding platform is arranged on the crawler-type main frame;

[0023] The walking mechanism comprises a walking machine body slidably arranged on a sliding platform, a walking gear is arranged inside the walking machine body through a walking motor, and a transmission rack meshing with the walking gear is arranged on the sliding platform;

[0024] The front end of the walking machine body is provided with a first rotating member and a second rotating member for rotating around a vertical axis, the rear end of the mechanical arm is connected to the first rotating member for rotating around a horizontal axis, the second rotating member is provided with a pitch swing oil cylinder for rotating around a horizontal axis, and the output end of the pitch swing oil cylinder is rotationally connected to the bottom of the mechanical arm, the front ends of the walking machine body are also provided with left and right swing oil cylinders for rotating on both sides, and the output ends of the left and right swing oil cylinders on both sides are respectively rotationally connected to the two sides of the first rotating member, and the walking machine body is also provided with a pump station connected to the oil circuits of the pitch swing oil cylinder and the left and right swing oil cylinders;

[0025] A first rotary motor is provided at the front end of the robotic arm, and the output shaft of the first rotary motor is provided with a rotary platform that can rotate along a horizontal axis. A second rotary motor is provided on the rotary platform, and the output shaft of the second rotary motor is connected to the bottom of the drilling rig guide rail. The drilling machine is slidably arranged on the drilling rig guide rail through an electric slider, and a self-drilling anchor body is installed at the front end of the drilling machine through a rotary grouting adapter.

[0026] Furthermore, the self-drilling anchor body comprises a hollow anchor body, a drill bit, a connecting sleeve and a centering device;

[0027] The hollow anchor rod body is formed by connecting two sections of the rod body through a connecting sleeve, the drill bit is arranged at the front end of the hollow anchor rod body, the end of the drill bit is a hollow disc structure and has fine holes distributed along the circumference, the centerer is arranged on the front section of the hollow anchor rod body, the rear section of the hollow anchor rod body is sleeved with a pad for pressing on the rock wall and the pad is provided with reinforcing bolts, and the rear section of the hollow anchor rod body is also connected to a grouting machine through a rotating grouting adapter and a grouting pipe.

[0028] Furthermore, the pulsating fracturing system includes a pulsating fracturing shell, a piston is movably provided inside the pulsating fracturing shell, and the piston divides the inner cavity of the pulsating fracturing shell into an oil chamber and a water chamber, the oil filling port of the oil chamber is connected to the hydraulic system of the tunneling equipment, the telescopic part can move back and forth in the water chamber, the water inlet of the water chamber is connected to a low-pressure water pump through an inlet water channel, and a hydraulically controlled one-way valve is provided on the inlet water channel, and the water outlet of the water chamber is also connected to the hollow anchor body through the outlet water channel.

[0029] Furthermore, the temporary support mechanism includes a top guard plate and a front support frame, the bottom of the front support frame is rotatably connected to the pulsating fracturing shell through two support seats, both sides of the pulsating fracturing shell are rotatably provided with supporting cylinders and a lifting cylinder is rotatably provided above the pulsating fracturing shell, the output ends of the supporting cylinder and the lifting cylinder are rotatably connected to the front support frame, the top guard plate is rotatably arranged above the front support frame, and a folding cylinder is rotatably provided at the bottom of the front end of the top guard plate and the output end of the folding cylinder is rotatably connected to the front of the front support frame.

[0030] Furthermore, the star wheel conveying device includes two groups of drive motors arranged on the shovel plate, and the output ends of the two groups of drive motors are respectively provided with a left star wheel and a right star wheel. A channel for gravel transportation is formed between the left star wheel and the right star wheel, and the conveyor belt is arranged at the channel.

[0031] Furthermore, the rear support part is rotatably arranged at the rear of the crawler-type main frame through a rear support cylinder, and a plurality of stabilizing cones are arranged below the rear support part.

[0032] The present application also provides a method for using the above-mentioned comprehensive rock tunnel rapid excavation equipment, comprising the following steps:

[0033] Step 1: Drilling and Pulse Hydraulic Fracturing

[0034] When breaking hard rock with a Proctor hardness coefficient of f>15 in a tunnel, first adjust the position of the excavation equipment so that it is located in the middle of the tunnel, use the walking mechanism to slide to a suitable position on the sliding platform, and the pump station drives the two pitch swing cylinders to extend the two pitch swing cylinders to lift the mechanical arm. Then the pump station controls one left and right swing cylinder to shorten, and the other left and right swing cylinder to extend, and then cooperates with the first rotating part and the second rotating part to swing the mechanical arm to the position to be drilled. Then use the first rotary motor and the second rotary motor to adjust the position of the drilling machine, and the electric slider drives the drilling machine to slide on the drilling machine guide rail, so that the self-drilling anchor body enters the rock mass and produces a long straight deep hole in the rock mass to be broken. Adjust the drilling machine to loosen the hollow rod section at the front end, drive the drilling machine back, set a centerer at the rear end of the hollow anchor rod body that has been drilled into the deep hole, and then use the connecting sleeve to set another hollow rod section, adjust the drilling machine to connect the rod section, and drive the drilling machine again to continue drilling in the long straight deep hole that has been produced. Repeat the above operations until the deep hole length reaches 10m, drive the drilling machine to withdraw from the deep hole, remove the lengthened rod section, drive the mechanical arm and the drilling machine to move to the next drilling position, repeat the above operations until multiple 10m long straight deep holes are drilled, and finally drive the mechanical arm to withdraw from the working plane and drive the walking mechanism to the initial position, so as to complete the drilling work;

[0035] Subsequently, a plurality of long straight deep holes are sealed with a high-pressure sealer, and a pulse water injection system is used to inject pulse water into the plurality of long straight deep holes. The long straight deep holes are further cracked under the action of the pulse hydraulic force. When it is observed that the expansion range of the cracks reaches the requirement, the pulse hydraulic fracturing work is completed, and then the high-pressure sealer is removed;

[0036] Step 2: Oscillating cutting and shipping

[0037] Adjust the position of the tunneling equipment to make it located in the middle of the tunnel, drive the telescopic oil cylinder to adjust the cutting head, make the alloy roller cutter align with the expanded deep hole, drive the tunneling machine to move forward, make the alloy roller cutter enter the expanded deep hole, and at the same time adjust the telescopic oil cylinder to make the alloy roller cutter break the rock mass according to the cutting path, then load the broken rock fragments through the loading mechanism, and transport the broken rock fragments through the conveyor belt, and repeat the above process until the cutting depth reaches 1m;

[0038] Step 3: Temporary support and anchoring

[0039] After the second step is completed, adjust the tunneling equipment to a suitable position, use the tunneling equipment hydraulic pump station to supply oil, push the hydraulic oil into the supporting cylinder, folding cylinder and lifting cylinder of the temporary support mechanism, drive the lifting cylinder to lift the entire temporary support mechanism, and then drive the folding cylinder to raise the front support frame, and at the same time drive the supporting cylinder to raise the top guard plate, and coordinate the operation of the supporting cylinder, folding cylinder and lifting cylinder through the multi-way reversing valve until the top guard plate and the front support frame are adjusted to the required height and angle and reach the required supporting force, then stop;

[0040] Drive the walking mechanism of the multifunctional drilling rig to make it move forward to a suitable position on the sliding platform, drive the mechanical arm to make the drilling machine move forward to the position to be anchored, use the centering device to fix the front section of the hollow anchor body, adjust the angle of the drilling machine, and connect the rear section of the hollow anchor body to the drilling machine through the rotating grouting adapter;

[0041] Drive the drill rig to make the drill bit move forward, and use the grouting machine to perform grouting at the same time, so as to achieve the effect of simultaneous drilling and grouting. Stop grouting after 1 minute of back-slurry at the hole mouth. After the slurry solidifies, install a pad close to the rock surface at the exposed section of the hollow anchor body, and then fix it to the pad with reinforcing bolts to press the rock surface. Repeat the above operation until all the anchor protection positions are completed. When grouting, the grouting machine uses pure cement slurry or 1:1 mortar. The particle size of the sand in the mortar is ≤1.0mm, and the water-cement ratio is controlled at 0.4-0.5.

[0042] Step 4: Cycle excavation and support operations until the tunnel is connected

[0043] After completing the above three steps, 1m of tunnel excavation is completed, and the two steps of oscillation cutting and transportation as well as temporary support and anchor protection are repeated until several 10m deep holes in the first step are milled, which means that one stage of tunnel excavation is completed; the three steps of drilling-pulse hydraulic fracturing-oscillation cutting and transportation-temporary support and anchor protection are repeated until the tunnel excavation is completed.

[0044] Compared with the prior art, the beneficial technical effects of the present invention using the above technical solution are as follows:

[0045] 1. This application integrates borehole detection, pulse fracturing, oscillation cutting and support operations into a single device. Through the multi-functional drilling rig, deep hole drilling and grouting support can be completed on one side of the tunnel boring machine, reducing the connection time between processes. The temporary support device is located above the oscillation cutting part, and the rock mass in the cutting area is supported in real time through the top guard plate and the front support, avoiding the risk of rock collapse caused by delayed support in traditional tunnel excavation. This application improves the overall continuity of tunnel excavation operations, reduces the frequency of equipment movement and time waste, and realizes the full mechanization and automation of drilling, cutting and support operations. It is suitable for tunneling scenarios that require high safety and high efficiency in coal mines and other underground projects.

[0046] 2. The pulse hydraulic fracturing system uses pulsed water flow to carry out directionally fracturing of the rock mass in the borehole, so that the rock mass gradually forms a crack network under the impact of high-frequency water pressure. This process makes full use of the rock's compressive but not tensile properties, effectively reduces the strength of the rock mass, and forms a layered structure that is conducive to cutting. The periodic impact design of pulse fracturing not only effectively avoids the damage to the stability of the rock formation caused by continuous high pressure, but also further expands the cracks, creating conditions for subsequent oscillation cutting. Compared with traditional hydraulic fracturing methods, pulse hydraulic fracturing has the advantages of energy saving and strong controllability, and has a wider adaptability. It can be applied to the excavation of ultra-hard rock tunnels and complex geological conditions.

[0047] 3. The oscillating cutting head in this application uses a combination of alloy hobs and eccentric block shafts, which can perform high-frequency oscillating cutting, so that the cutting head can accurately cut rock masses at different depths. This design uses the rotation of the eccentric block shaft to excite the eccentric oscillating cutting of the hobs. This technology reduces the resistance when cutting hard rock, making the crushing process more efficient and stable. This improvement reduces the load and wear of the equipment, extends the life of the equipment, and significantly improves the efficiency of hard rock excavation, making it suitable for excavation operations in hard rock tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of a comprehensive rock tunnel rapid excavation equipment of the present application.

[0049] Figure 2 It is a structural schematic diagram of the oscillating cutting part in this application.

[0050] Figure 3 It is a schematic diagram of the internal structure of the oscillating cutting head in this application.

[0051] Figure 4 It is a structural diagram of the multifunctional drilling rig in this application.

[0052] Figure 5 It is a schematic diagram of the meshing transmission of the traveling gear and the rack in the traveling mechanism of the multifunctional drilling rig in the present application.

[0053] Figure 6 It is a schematic diagram of the multifunctional drilling rig anchor protection in this application.

[0054] Figure 7 It is a schematic diagram of the internal structure of the pulsating fracturing system in this application.

[0055] Figure 8 It is the structural diagram of the temporary support mechanism in this application.

[0056] Fig. 9 It is a structural diagram of the loading mechanism in this application.

[0057] Fig.10It is a schematic diagram of hydraulic fracturing with a high-pressure sealer in this application.

[0058] As shown in the figure: 1. Main frame, 2. Oscillation cutting unit, 3. Multifunctional drilling rig, 4. Temporary support mechanism, 5. Loading mechanism, 6. Conveyor belt, 7. Rear support unit, 8. Pulsating fracturing system, 9. High-pressure sealer;

[0059] 2-1, oscillating cutting head, 2-2, hinge support, 2-3, telescopic cylinder, 2-4, telescopic part;

[0060] 2-1-1, alloy hob, 2-1-2, front end cover, 2-1-3, front housing, 2-1-4, cylindrical roller bearing, 2-1-5, front sleeve, 2-1-6, rear sleeve, 2-1-7, rear housing, 2-1-8, deep groove ball bearing, 2-1-9, eccentric block shaft, 2-1-10, eccentric block shaft end cover, 2-1-11, shaft sleeve, 2-1-12, retaining ring, 2-1-13, skew axis motor, 2-1-14, motor sleeve, 2-1-15, bearing sleeve;

[0061] 3-1, sliding platform, 3-2, walking mechanism, 3-3, first rotating part, 3-4, second rotating part, 3-5, mechanical arm, 3-6, rotating platform, 3-7, drilling rig guide rail, 3-8, drilling machine, 3-9, left and right swing cylinder, 3-10, pitch swing cylinder, 3-11, rotary grouting adapter, 3-12, walking body, 3-13, self-drilling anchor body, 3-13-1, hollow anchor body, 3-13-2, drill bit; 3-13-3, connecting sleeve, 3-13-4, centering device, 3-13-5, pad, 3-13-6, reinforcing bolt;

[0062] 3-14, pump station, 3-15, second rotary motor, 3-16, grouting machine, 3-17, travel gear, 3-18, first rotary motor;

[0063] 4-1, top guard plate, 4-2, front support frame, 4-3, support cylinder, 4-4, folding cylinder, 4-5, support seat, 4-6, lifting cylinder;

[0064] 5-1, left star wheel, 5-2, shovel plate, 5-3, drive motor, 5-4, right star wheel;

[0065] 8-1, pulsating fracturing shell, 8-2, piston, 8-3, oil chamber, 8-4, water chamber, 8-5, low-pressure water pump, 8-6, hydraulically controlled one-way valve. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0068] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0070] As attached Figure 1 As shown, a comprehensive rock tunnel rapid excavation equipment, the excavation equipment includes: a crawler main frame 1, which serves as a supporting platform for the overall structure; an oscillating cutting part 2, which is arranged on the crawler main frame 1, and includes an oscillating cutting head 2-1 and a telescopic part 2-4, and the rock formation is cut by the telescopic part 2-4 and the vibration of the oscillating cutting head 2-1; a multifunctional drilling rig 3, which is arranged on one side of the crawler main frame 1, and is used for drilling holes in the rock formation and installing anchor rods; a pulsating fracturing system 8, which is connected to the oscillating cutting part 2 and is arranged behind the telescopic part 2-4, and generates hydraulic pulses to The rock formation is fractured to improve the cutting efficiency; a temporary support mechanism 4 is arranged in front of the crawler main frame 1, and is used to provide temporary support during the excavation process; a loading mechanism 5 is arranged below the oscillating cutting part 2, including a shovel plate 5-2 and a star wheel conveying device arranged on the shovel plate 5-2, and is used to collect and load the cut coal and rock; a conveyor belt 6 is arranged behind the loading mechanism 5, connected to the loading mechanism 5, and is used to transport the coal and rock to the rear of the excavation equipment; a rear support part 7 is arranged at the rear of the crawler main frame 1, and is used to stabilize the position of the excavation equipment during work.

[0071] Furthermore, as attached Figure 2 As shown, the oscillating cutting part 2 is rotatably connected to the front end of the telescopic part 2-4 through a connecting piece. Telescopic cylinders 2-3 are arranged above and below the pulsating fracturing system 8, and these telescopic cylinders 2-3 can rotate around their axis. The output ends of the telescopic cylinders 2-3 are respectively rotatably connected to the hinge supports 2-2 arranged above and below the oscillating cutting part 2. By independently adjusting the extension or shortening state of the two telescopic cylinders 2-3, the present application can accurately control the up and down swing angles of the oscillating cutting head 2-1. Specifically, when the output end of the upper telescopic cylinder 2-3 is extended and the output end of the lower telescopic cylinder 2-3 is shortened, the oscillating cutting head 2-1 will swing downward accordingly; conversely, when the output end of the upper telescopic cylinder 2-3 is shortened and the output end of the lower telescopic cylinder 2-3 is extended, the oscillating cutting head 2-1 will swing upward. This enables the excavation equipment to adapt to rock masses of different hardness and angles, and improves the flexibility and adaptability of excavation operations.

[0072] Specifically, as attached Figure 3As shown, the oscillating cutting head 2-1 includes an alloy hob 2-1-1, a front cover 2-1-2, a front shell 2-1-3, a front sleeve 2-1-5, a rear sleeve 2-1-6 and a rear shell 2-1-7; the alloy hob 2-1-1 is fixed to the front end of the front cover 2-1-2 by bolts, forming the main component of the cutting operation; the rear sleeve 2-1-6 is connected to the front end of the rear shell 2-1-7 by bolts and extends to the inside of the rear shell 2-1-7; the inside of the rear sleeve 2-1-6 is provided with an eccentric block shaft 2-1-9 through two deep groove ball bearings 2-1-8 for rotation, wherein the front part of the front deep groove ball bearing 2-1-8 is also provided with an eccentric block shaft end cover 2-1-10 , the front part of the rear deep groove ball bearing 2-1-8 is provided with a sleeve 2-1-11 for adapting the eccentric block shaft 2-1-9; the rear part of the rear deep groove ball bearing 2-1-8 is also equipped with an eccentric shaft motor 2-1-13 through a motor sleeve 2-1-14 and a bearing sleeve 2-1-15, and the output end of the eccentric shaft motor 2-1-13 is connected to the eccentric shaft 2-1-9, the front sleeve 2-1-5 is installed at the front end of the rear sleeve 2-1-6 by bolts, the front cover 2-1-2 is rotatably arranged at the front end of the front sleeve 2-1-5 through a cylindrical roller bearing 2-1-4, and a retaining ring 2-1-12 is also provided on the inner side of the cylindrical roller bearing 2-1-4, which can be used to share the cutting dynamic load. The eccentric block shaft 2-1-9 and the eccentric shaft motor 2-1-13 are connected by splines, and the eccentric angle of the axis of the eccentric block shaft 2-1-9 is 4-5°. The oscillating cutting head 2-1 in the present application not only integrates the core components such as the alloy hob 2-1-1, the front cover 2-1-2, the front shell 2-1-3, the front sleeve 2-1-5, the rear sleeve 2-1-6 and the rear shell 2-1-7, but also incorporates a number of optimized features in the design. The alloy hob 2-1-1, as the main force of the cutting operation, is made of high-performance wear-resistant alloy material and is plated with a hard alloy layer on the surface to enhance its durability and cutting efficiency. In addition, the front cover 2-1-2 and the front sleeve 2-1-5 are flexibly rotated through the cylindrical roller bearing 2-1-4, and a retaining ring 2-1-12 is added, which not only ensures the stability of the rotation, but also effectively shares the huge dynamic load generated during cutting and protects the internal structure from damage. The eccentric block shaft 2-1-9 installed inside the rear sleeve 2-1-6 has an axis designed with an eccentric angle of 4-5°. In conjunction with the spline connection of the skew axis motor 2-1-13, it can generate periodic oscillation excitation under the drive of the skew axis motor 2-1-13. This design not only improves the cutting efficiency, but also effectively reduces the cutting resistance and energy consumption. The two ends of the eccentric block shaft 2-1-9 are supported by two deep groove ball bearings 2-1-8, the front end is fixed by the eccentric block shaft end cover 2-1-10, and the rear end is adapted and connected to the output end of the skew axis motor 2-1-13 through the sleeve 2-1-11, ensuring the stability and reliability of the transmission.The entire oscillating cutting head 2-1 has a compact structure and precise coordination between its components, which not only ensures efficient cutting operations but also is easy to maintain and service. It is an indispensable and efficient tool in engineering fields such as mines and tunnels.

[0073] In a specific detailed embodiment, as shown in the attached Figure 4 -Attached Figure 5 As shown, the multifunctional drilling rig 3 is a highly integrated and flexible drilling equipment, which is mainly composed of the following key components: a sliding platform 3-1, a walking mechanism 3-2, a mechanical arm 3-5, a rotary platform 3-6, a drilling rig guide rail 3-7 and a drilling machine 3-8. These components work together to enable the multifunctional drilling rig 3 to perform efficient and accurate drilling tasks in various complex environments. The sliding platform 3-1 is the mobile base of the entire equipment, which is connected to the crawler main frame 1.

[0074] The walking mechanism 3-2 includes a walking body 3-12 slidably arranged on the sliding platform 3-1, and a walking gear 3-17 is driven to rotate by a walking motor inside the walking body 3-12. A transmission rack meshing with the walking gear 3-17 is provided on the sliding platform 3-1, so that the walking gear 3-17 can drive the walking body 3-12 to move on the sliding platform 3-1 through the transmission rack, thereby realizing the overall movement of the walking body 3-12.

[0075] The front end of the walking body 3-12 rotates around the vertical axis and is provided with a first rotating member 3-3 and a second rotating member 3-4. The rear end of the mechanical arm 3-5 rotates around the horizontal axis and is connected to the first rotating member 3-3. The second rotating member 3-4 rotates around the horizontal axis and is provided with a pitch swing oil cylinder 3-10, and the output end of the pitch swing oil cylinder 3-10 is rotatably connected to the bottom of the mechanical arm 3-5. The front ends of the walking body 3-12 are also rotatably provided with left and right swing oil cylinders 3-9 on both sides, and the output ends of the left and right swing oil cylinders 3-9 on both sides are respectively rotatably connected to the two sides of the first rotating member 3-3. The walking body 3-12 is also provided with a pitch swing oil cylinder 3-9 on both sides. The pump station 3-14 connected to the oil circuit of the swing cylinder 3-10 and the left and right swing cylinders 3-9; the front end of the mechanical arm 3-5 is provided with a first rotary motor 3-18, the output shaft of the first rotary motor 3-18 is provided with a rotary platform 3-6 that can rotate along the horizontal axis, the rotary platform 3-6 is provided with a second rotary motor 3-15 and the output shaft of the second rotary motor 3-15 is connected to the bottom of the drilling rig guide rail 3-7, the drilling machine 3-8 is slidably arranged on the drilling rig guide rail 3-7 through an electric slider, and the front end of the drilling machine 3-8 is installed with a self-drilling anchor rod body 3-13 through a rotating grouting adapter 3-11. At the front end of the walking machine body 3-12, a first rotating member 3-3 and a second rotating member 3-4 are provided to rotate around a vertical axis, and the first rotating member 3-3 and the second rotating member 3-4 provide a flexible rotation space for the mechanical arm 3-5. The rear end of the mechanical arm 3-5 is connected to the first rotating member 3-3 to rotate around a horizontal axis, so that it can rotate on a horizontal plane. In order to further enhance the flexibility of the robot arm 3-5, a pitch swing oil cylinder 3-10 is provided on the second rotating member 3-4 to rotate around a horizontal axis, and its output end is rotatably connected to the bottom of the robot arm 3-5. By adjusting the extension and contraction of the pitch swing oil cylinder 3-10, the pitch swing of the robot arm 3-5 on the vertical plane can be achieved. In addition, left and right swing oil cylinders 3-9 are also rotatably provided on both sides of the front end of the walking body 3-12, and the output ends of the two left and right swing oil cylinders 3-9 are respectively rotatably connected to the two sides of the first rotating member 3-3. By simultaneously adjusting the extension and contraction of the two left and right swing oil cylinders 3-9, the left and right swing of the robot arm 3-5 on the horizontal plane can be achieved, thereby further expanding the working range of the robot arm 3-5.

[0076] In order to ensure the stable operation of the pitching and swinging cylinders 3-10 and the left and right swinging cylinders 3-9, a pump station 3-14 connected to their oil circuits is also provided on the walking body 3-12. The pump station 3-14 provides a stable and reliable hydraulic power source for these cylinders, ensuring that the mechanical arm 3-5 can flexibly and accurately complete various actions.

[0077] In a specific embodiment disclosed in this application, as shown in the attached Figure 6As shown, the self-drilling anchor body 3-13 includes a hollow anchor body 3-13-1, a drill bit 3-13-2, a connecting sleeve 3-13-3 and a centering device 3-13-4; the hollow anchor body 3-13-1 is formed by connecting two sections of the anchor body through a connecting sleeve 3-13-3, the drill bit 3-13-2 is arranged at the front end of the hollow anchor body 3-13-1, and the end of the drill bit 3-13-2 is a hollow disc structure and is distributed along the circumference There are fine holes, the centerer 3-13-4 is set on the front section of the hollow anchor body 3-13-1, the rear section of the hollow anchor body 3-13-1 is sleeved with a pad 3-13-5 for pressing on the rock wall, and the pad 3-13-5 is provided with a reinforcing bolt 3-13-6, and the rear section of the hollow anchor body 3-13-1 is also connected to a grouting machine 3-16 through a rotating grouting adapter 3-11 and a grouting pipe. The reinforcing bolt 3-13-6 and the pad 3-13-5 are used in conjunction, and the reinforcing bolt 3-13-6 first transfers the anchoring force of the hollow anchor body 3-13-1 to the pad 3-13-5, and the pad 3-13-5 then applies the anchoring force to the surrounding rock, transfers stress, improves the end force, and enhances the anchoring effect of the self-drilling anchor. The centering device 3-13-4 can ensure that the rod body of the self-drilling anchor rod is always located at the center of the borehole during the construction process, thereby ensuring that the thickness of the slurry around the rod body is uniform and further enhancing the anchoring effect.

[0078] In a specific embodiment disclosed in this application, as shown in the attached Figure 7As shown, the pulsating fracturing system 8 includes a pulsating fracturing shell 8-1, a piston 8-2 is movably arranged inside the pulsating fracturing shell 8-1, and the piston 8-2 divides the inner cavity of the pulsating fracturing shell 8-1 into an oil cavity 8-3 and a water cavity 8-4, the oil filling port of the oil cavity 8-3 is connected to the hydraulic system of the excavation equipment, the telescopic part 2-4 can move forward and backward in the water cavity 8-4, the water inlet of the water cavity 8-4 is connected to a low-pressure water pump 8-5 through an inlet waterway, and a hydraulically controlled one-way valve 8-6 is arranged on the inlet waterway, and the water outlet of the water cavity 8-4 is also connected to the hollow anchor body 3-13-1 through an outlet waterway. The system causes water and oil to produce pressure changes through the movement of the piston 8-2, thereby generating hydraulic pulses. Specifically, the oil chamber 8-3 is filled with oil and pressurized through the hydraulic system of the excavation equipment to form a high-pressure oil flow, which pushes the piston 8-2 in the oil chamber 8-3 to move toward the water chamber 8-4. The low-pressure water pump 8-5 provides water pressure to the water chamber 8-4 inside the equipment through the hydraulically controlled one-way valve 8-6 and the water inlet. The oil chamber 8-3 and the water chamber 8-4 are separated by the piston 8-2. As the piston 8-2 moves, the water in the water chamber 8-4 flows to the outlet connected to the hollow anchor body 3-13-1 under a certain pressure. At the same time, the oscillating cutting head 2-1 and the telescopic part 2-4 are driven to expand and contract through the telescopic cylinder 2-3 under the action of the water pressure in the water chamber 8-4 to share the water pressure. When the pulse pressure reaches a certain value, the hydraulically controlled one-way valve 8-6 controls the direction of liquid flow, so that water sprays out from the outlet and passes through the high-pressure sealer 9 to further act on the crack area. After water drilling, the pulse water transmitted by the pulse fracturing system acts on the rock formation, forming an impact force, thereby generating cracks in the rock. By periodically pulsating water, an extended fracture network can be induced in the rock formation, achieving hydraulic fracturing of the rock formation. This process is repeated, allowing the equipment to continuously generate pulsed water flow, thereby continuously impacting the rock formation at a high frequency.

[0079] In a specific embodiment disclosed in this application, as shown in the attached Figure 8As shown, the temporary support mechanism 4 includes a top guard plate 4-1 and a front support frame 4-2. The bottom of the front support frame 4-2 is rotatably connected to the pulsating fracturing shell 8-1 through two support seats 4-5. Support cylinders 4-3 are rotatably provided on both sides of the pulsating fracturing shell 8-1, and a lifting cylinder 4-6 is rotatably provided above the pulsating fracturing shell 8-1. The output ends of the support cylinder 4-3 and the lifting cylinder 4-6 are rotatably connected to the front support frame 4-2. The top guard plate 4-1 is rotatably set above the front support frame 4-2. A folding cylinder 4-4 is also rotatably provided at the bottom of the front end of the top guard plate 4-1, and the output end of the folding cylinder 4-4 is rotatably connected to the front of the front support frame 4-2. The temporary support mechanism 4 is powered by the hydraulic system of the tunneling equipment and is driven by hydraulic oil. When working, the support cylinder 4-3 and the lifting cylinder 4-6 extend to lift the front support frame 4-2 to a certain height and then stop moving. The folding cylinder 4-4 extends to lift the top guard plate 4-1 and put it close to the rock wall. When retracting, the folding cylinder 4-4 first shortens to retract the top guard plate 4-1, and the support cylinder 4-3 and the lifting cylinder 4-6 shorten to retract the front support frame 4-2. The entire temporary support mechanism 4 has strong adaptability to the tunneling equipment body and high flexibility of its own action mechanism.

[0080] In a specific embodiment disclosed in this application, as shown in the attached Fig. 9 As shown, the star wheel conveying device includes two sets of drive motors 5-3 arranged on the shovel board 5-2, and the output ends of the two sets of drive motors 5-3 are respectively provided with a left star wheel 5-1 and a right star wheel 5-4, and a channel for crushed rock transportation is formed between the left star wheel 5-1 and the right star wheel 5-4, and a conveyor belt 6 is arranged at the channel. The function of the star wheel conveying device is to collect and load the broken coal and rock onto the conveyor belt 6 and transport it to the rear of the crawler. Specifically, the shovel board 5-2 shovels up the broken rocks, and the left star wheel 5-1 and the right star wheel 5-4 rotate in opposite directions through the drive motor 5-3, and the shoveled broken rocks are transported to the conveyor belt 6 in real time.

[0081] In a specific embodiment of the present disclosure, the rear support part 7 is rotatably arranged at the rear of the crawler main frame 1 through the rear support cylinder, and a plurality of stabilizing cones are arranged below the rear support part 7. The rear support part 7 and the rear support cylinder are both rotatably arranged at the rear of the crawler main frame 1, and the output end of the rear support cylinder is rotatably connected to the rear support part 7, so that under the telescopic action of the support cylinder, the rear support part 7 can be rotated to the ground to achieve stable support.

[0082] The present application also provides a method for using a comprehensive rock tunnel rapid excavation equipment, comprising the following steps:

[0083] Step 1: Drilling and Pulse Hydraulic Fracturing

[0084] When breaking hard rock with a Proctor hardness coefficient of f>15 in the tunnel, first adjust the position of the excavation equipment so that it is located in the middle of the tunnel, use the walking mechanism 3-2 to slide on the sliding platform 3-1 to a suitable position, and the pump station 3-14 drives the two pitch swing cylinders 3-10 to extend the two pitch swing cylinders 3-10 to lift the mechanical arm 3-5, then the pump station 3-14 controls one left and right swing cylinder 3-9 to shorten, and the other left and right swing cylinder 3-9 to extend, and then cooperate with the first rotating part 3-3 and the second rotating part 3-4 to swing the mechanical arm 3-5 to the position to be drilled, and then use the first rotary motor 3-18 and the second rotary motor 3-15 to adjust the position of the drilling machine 3-8, and the electric slider drives the drilling machine 3-8 to slide on the drilling rig guide rail 3-7, so that the self-drilling anchor rod body 3-13 enters the rock mass and is in the rock mass to be broken. A long straight deep hole is generated in the process, the drilling machine 3-8 is adjusted to loosen the hollow segmented rod body at the front end, the drilling machine 3-8 is driven to retreat, and a centering device 3-13-4 is sleeved on the rear end of the hollow anchor rod body 3-13-1 that has been drilled into the deep hole, and then another hollow segmented rod body is sleeved using the connecting sleeve 3-13-3, and the drilling machine 3-8 is adjusted to connect the segmented rod body, and the drilling machine 3-8 is driven again to continue drilling in the generated long straight deep hole. The above operation is repeated until the length of the deep hole reaches 10m, the drilling machine 3-8 is driven to withdraw from the deep hole, the lengthened segmented rod body is removed, and the mechanical arm 3-5 and the drilling machine 3-8 are driven to move to the next drilling position, and the above operation is repeated until multiple long straight deep holes with a length of 10m are drilled, and finally the mechanical arm 3-5 is driven to withdraw from the working plane, and the walking mechanism 3-2 is driven to the initial position, and the drilling work is completed.

[0085] Subsequently, a plurality of long straight deep holes are sealed with a high-pressure sealer 9, and a pulse water injection system 8 is used to inject pulse water into the plurality of long straight deep holes. The long straight deep holes are further expanded under the action of the pulse hydraulic force. When it is observed that the expansion range of the cracks reaches the requirement, the pulse hydraulic fracturing work is completed, and then the high-pressure sealer 9 (as shown in the attached figure) is removed. Fig.10 shown);

[0086] Step 2: Oscillating cutting and shipping

[0087] Adjust the position of the tunneling equipment to make it in the middle of the tunnel, drive the telescopic cylinder 2-3 to adjust the oscillating cutting head 2-1, aim the alloy roller cutter 2-1-1 at the expanded deep hole, drive the tunneling machine to move forward, make the alloy roller cutter 2-1-1 enter the expanded deep hole, and at the same time adjust the telescopic cylinder 2-3 to make the alloy roller cutter 2-1-1 crush the rock mass according to the cutting path, then load the crushed rock fragments through the loading mechanism 5, and transport the crushed rock fragments through the conveyor belt 6, and repeat the above process until the cutting depth reaches 1m;

[0088] Step 3: Temporary support and anchoring

[0089] After the second step is completed, adjust the excavation equipment to be in a suitable position, use the excavation equipment hydraulic pump station to supply oil, push the hydraulic oil into the supporting cylinder 4-3, folding cylinder 4-4 and lifting cylinder 4-6 of the temporary support mechanism 4, drive the lifting cylinder 4-6 to lift the entire temporary support mechanism 4, and then drive the folding cylinder 4-4 to raise the front support frame 4-2, and at the same time drive the supporting cylinder 4-3 to raise the top guard plate 4-1, and coordinate the operation of the supporting cylinder 4-3, folding cylinder 4-4 and lifting cylinder 4-6 through the multi-way reversing valve until the top guard plate 4-1 and the front support frame 4-2 are adjusted to the required height and angle and reach the required supporting force and then stop;

[0090] Drive the walking mechanism 3-2 of the multifunctional drilling rig 3 to make it move forward to a suitable position on the sliding platform 3-1, drive the mechanical arm 3-5 to make the drilling machine 3-8 move forward to the position to be anchored, use the centering device 3-13-4 to fix the front section of the hollow anchor rod body 3-13-1, adjust the angle of the drilling machine 3-8, and connect the rear section of the hollow anchor rod body 3-13-1 to the drilling machine 3-8 through the rotating grouting adapter 3-11;

[0091] Drive the drilling machine 3-8 to make the drill bit 3-13-2 move forward, and use the grouting machine 3-16 to perform grouting at the same time, so as to achieve the effect of simultaneous drilling and grouting, and stop grouting after the hole mouth is slurried for 1 minute. After the slurry solidifies, install the pad 3-13-5 close to the rock surface at the exposed section of the hollow anchor body 3-13-1, and then fix it to the pad 3-13-5 with the reinforcing bolt 3-13-6 to press the rock surface, and repeat the above operation until all operations are completed at the anchor protection position; the grouting machine 3-16 uses pure cement slurry or 1:1 mortar when grouting, the particle size of the sand in the mortar is ≤1.0mm, and the water-cement ratio is controlled at 0.4-0.5;

[0092] Step 4: Cycle excavation and support operations until the tunnel is connected

[0093] After completing the above three steps, 1m of tunnel excavation is completed, and the two steps of oscillation cutting and shipping and temporary support and anchoring are repeated until several 10m deep holes in the first step are milled, that is, one stage of tunnel excavation is completed; the three steps of drilling-pulse hydraulic fracturing-oscillation cutting and shipping-temporary support and anchoring are repeated until the tunnel excavation is completed. The above describes the present invention and its implementation methods. This description is not restrictive. What is shown in the accompanying drawings is only one of the implementation methods of the present invention, and the actual structure is not limited to this. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention, without creatively designing structural methods and embodiments similar to the technical solution, they should all fall within the scope of protection of the present invention.

Claims

1. A comprehensive rock tunnel rapid excavation equipment, characterized in that: The excavation equipment comprises: A crawler-type main frame (1) serves as a supporting platform for the overall structure; The oscillating cutting part (2) is arranged on the crawler-type main frame (1), and comprises an oscillating cutting head (2-1) and a telescopic part (2-4), and the cutting of the rock formation is achieved through the telescopic movement of the telescopic part (2-4) and the vibration of the oscillating cutting head (2-1); A multifunctional drilling machine (3), arranged on one side of the crawler-type main frame (1), is used for drilling holes in rock formations and installing anchor rods; A pulsating fracturing system (8) is connected to the oscillating cutting section (2) and is arranged behind the telescopic section (2-4), and is used to fractur e the rock formation by generating hydraulic pulses to improve the cutting efficiency; A temporary support mechanism (4) is arranged in front of the crawler main frame (1) and is used to provide temporary support during the excavation process; The loading mechanism (5) is arranged below the oscillating cutting part (2), and comprises a shovel plate (5-2) and a star wheel conveying device arranged on the shovel plate (5-2), and is used for collecting and loading the cut coal and rock; A conveyor belt (6) is arranged behind the loading mechanism (5), connected to the loading mechanism (5), and used to transport coal and rock to the rear of the tunneling equipment; The rear support part (7) is arranged at the rear of the crawler-type main frame (1) and is used to stabilize the position of the tunneling equipment during operation.

2. The comprehensive rock tunnel rapid excavation equipment according to claim 1 is characterized in that: The oscillating cutting part (2) is rotatably connected to the front end of the telescopic part (2-4) via a connecting piece, and telescopic oil cylinders (2-3) are rotatably provided at the upper and lower parts of the pulsating fracturing system (8), and the output ends of the telescopic oil cylinders (2-3) arranged at the upper and lower parts are rotatably connected to the hinged supports (2-2) arranged at the upper and lower parts of the oscillating cutting part (2), respectively.

3. The comprehensive rock tunnel rapid excavation equipment according to claim 2 is characterized in that: The oscillating cutting head (2-1) comprises an alloy hob (2-1-1), a front end cover (2-1-2), a front shell (2-1-3), a front sleeve (2-1-5), a rear sleeve (2-1-6) and a rear shell (2-1-7); The alloy hob (2-1-1) is fixed to the front end of the front end cover (2-1-2) by bolts, forming a main component for cutting operations; The rear sleeve (2-1-6) is connected to the front end of the rear shell (2-1-7) by means of bolts and extends into the interior of the rear shell (2-1-7); An eccentric block shaft (2-1-9) is rotatably arranged inside the rear sleeve (2-1-6) via two deep groove ball bearings (2-1-8), wherein the front portion of the front deep groove ball bearing (2-1-8) is also provided with an eccentric block shaft end cover (2-1-10), and the front portion of the rear deep groove ball bearing (2-1-8) is provided with a shaft sleeve (2-1-11) for fitting the eccentric block shaft (2-1-9); The rear part of the deep groove ball bearing (2-1-8) at the rear end is also equipped with an eccentric shaft motor (2-1-13) through a motor sleeve (2-1-14) and a bearing sleeve (2-1-15), and the output end of the eccentric shaft motor (2-1-13) is connected to the eccentric block shaft (2-1-9), the front sleeve (2-1-5) is installed on the front end of the rear sleeve (2-1-6) through bolts, the front end cover (2-1-2) is rotatably arranged at the front end of the front sleeve (2-1-5) through a cylindrical roller bearing (2-1-4), and a retaining ring (2-1-12) is also arranged on the inner side of the cylindrical roller bearing (2-1-4).

4. The comprehensive rock tunnel rapid excavation equipment according to claim 1 is characterized in that: The multifunctional drilling rig (3) comprises a sliding platform (3-1), a walking mechanism (3-2), a mechanical arm (3-5), a rotary platform (3-6), a drilling rig guide rail (3-7) and a drilling machine (3-8); The sliding platform (3-1) is arranged on the sliding platform (3-1); The walking mechanism (3-2) comprises a walking machine body (3-12) slidably arranged on a sliding platform (3-1), a walking gear (3-17) is arranged inside the walking machine body (3-12) via a walking motor, and a transmission rack meshing with the walking gear (3-17) is arranged on the sliding platform (3-1); The front end of the walking machine body (3-12) is provided with a first rotating member (3-3) and a second rotating member (3-4) for rotation around a vertical axis; the rear end of the mechanical arm (3-5) is connected to the first rotating member (3-3) for rotation around a horizontal axis; the second rotating member (3-4) is provided with a pitch swing oil cylinder (3-10) for rotation around a horizontal axis, and the output end of the pitch swing oil cylinder (3-10) is rotationally connected to the bottom of the mechanical arm (3-5); left and right swing oil cylinders (3-9) are also rotationally provided on both sides of the front end of the walking machine body (3-12), and the output ends of the left and right swing oil cylinders (3-9) on both sides are rotationally connected to both sides of the first rotating member (3-3); the walking machine body (3-12) is also provided with a pump station (3-14) connected to the oil circuits of the pitch swing oil cylinder (3-10) and the left and right swing oil cylinders (3-9); The front end of the mechanical arm (3-5) is provided with a first rotary motor (3-18), the output shaft of the first rotary motor (3-18) is provided with a rotary platform (3-6) that can rotate along a horizontal axis, the rotary platform (3-6) is provided with a second rotary motor (3-15), and the output shaft of the second rotary motor (3-15) is connected to the bottom of a drilling rig guide rail (3-7), the drilling machine (3-8) is slidably arranged on the drilling rig guide rail (3-7) via an electric slider, and the front end of the drilling machine (3-8) is installed with a self-drilling anchor rod body (3-13) via a rotary grouting adapter (3-11).

5. The comprehensive rock tunnel rapid excavation equipment according to claim 4 is characterized in that: The self-drilling anchor rod body (3-13) comprises a hollow anchor rod body (3-13-1), a drill bit (3-13-2), a connecting sleeve (3-13-3) and a centering device (3-13-4); The hollow anchor rod body (3-13-1) is formed by butt-jointing two sections of rod bodies via a connecting sleeve (3-13-3); the drill bit (3-13-2) is arranged at the front end of the hollow anchor rod body (3-13-1); the end of the drill bit (3-13-2) is a hollow disc-shaped structure with fine holes distributed along the circumference; the centering device (3-13-4) is arranged on the front section of the hollow anchor rod body (3-13-1); the rear section of the hollow anchor rod body (3-13-1) is sleeved with a pad (3-13-5) for pressing on the rock wall, and the pad (3-13-5) is provided with a reinforcing bolt (3-13-6); the rear section of the hollow anchor rod body (3-13-1) is also connected to a grouting machine (3-16) via a rotating grouting adapter (3-11) and a grouting pipe.

6. The comprehensive rock tunnel rapid excavation equipment according to claim 5, characterized in that: The pulsating fracturing system (8) comprises a pulsating fracturing shell (8-1), a piston (8-2) is movably provided inside the pulsating fracturing shell (8-1), and the piston (8-2) divides the inner cavity of the pulsating fracturing shell (8-1) into an oil cavity (8-3) and a water cavity (8-4), the oil filling port of the oil cavity (8-3) is connected to the hydraulic system of the excavation equipment, the telescopic part (2-4) can move forward and backward in the water cavity (8-4), the water inlet of the water cavity (8-4) is connected to a low-pressure water pump (8-5) through an inlet water channel, and a hydraulically controlled one-way valve (8-6) is provided on the inlet water channel, and the water outlet of the water cavity (8-4) is also connected to the hollow anchor rod body (3-13-1) through the outlet water channel.

7. The comprehensive rock tunnel rapid excavation equipment according to claim 6, characterized in that: The temporary support mechanism (4) comprises a top guard plate (4-1) and a front support frame (4-2); the bottom of the front support frame (4-2) is rotatably connected to the pulsating fracturing shell (8-1) via two support seats (4-5); support cylinders (4-3) are rotatably provided on both sides of the pulsating fracturing shell (8-1); and a lifting cylinder (4-6) is rotatably provided above the pulsating fracturing shell (8-1); the output ends of the support cylinder (4-3) and the lifting cylinder (4-6) are rotatably connected to the front support frame (4-2); the top guard plate (4-1) is rotatably arranged above the front support frame (4-2); a folding cylinder (4-4) is rotatably provided at the bottom of the front end of the top guard plate (4-1); and the output end of the folding cylinder (4-4) is rotatably connected to the front of the front support frame (4-2).

8. The comprehensive rock tunnel rapid excavation equipment according to claim 1, characterized in that: The star wheel conveying device comprises two groups of drive motors (5-3) arranged on a shovel plate (5-2), the output ends of the two groups of drive motors (5-3) are respectively provided with a left star wheel (5-1) and a right star wheel (5-4), a channel for conveying crushed stones is formed between the left star wheel (5-1) and the right star wheel (5-4), and a conveyor belt (6) is arranged at the channel.

9. The comprehensive rock tunnel rapid excavation equipment according to claim 1, characterized in that: The rear support part (7) is rotatably arranged at the rear of the crawler-type main frame (1) through a rear support oil cylinder, and a plurality of stabilizing cones are arranged below the rear support part (7).

10. A method for using the comprehensive rock tunnel rapid excavation equipment according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Drilling and Pulse Hydraulic Fracturing When breaking hard rock with a Pugh hardness coefficient of f>15 in a tunnel, first adjust the position of the excavation equipment so that it is located in the middle of the tunnel, use the walking mechanism (3-2) to slide on the sliding platform (3-1) to a suitable position, and the pump station (3-14) drives two pitch swing cylinders (3-10) to extend the two pitch swing cylinders (3-10) to lift the mechanical arm (3-5), and then the pump station (3-14) controls a left and right swing cylinder (3-9 ) is shortened, the other left and right swing cylinder (3-9) is extended and then cooperates with the first rotating member (3-3) and the second rotating member (3-4) to swing the mechanical arm (3-5) to the position to be drilled, and then the first rotary motor (3-18) and the second rotary motor (3-15) are used to adjust the position of the drilling machine (3-8), and the electric slide drives the drilling machine (3-8) to slide on the drilling machine guide rail (3-7), so that the self-drilling anchor rod body (3-13) enters the rock mass and is located at the position to be broken. A long straight deep hole is produced in the crushed rock mass, the drilling machine (3-8) is adjusted to loosen the hollow joint rod body at the front end, the drilling machine (3-8) is driven to retreat, a centering device (3-13-4) is sleeved on the rear end of the hollow anchor rod body (3-13-1) that has been drilled into the deep hole, another hollow joint rod body is sleeved by using the connecting sleeve (3-13-3), the drilling machine (3-8) is adjusted to connect the joint rod bodies, and the drilling machine (3-8) is driven again to produce a long straight deep hole in the produced long straight rock mass. Continue drilling in the deep hole, repeat the above operation until the length of the deep hole reaches 10m, drive the drilling machine (3-8) to withdraw from the deep hole, remove the lengthened section rod body, drive the mechanical arm (3-5) and the drilling machine (3-8) to move to the next drilling position, repeat the above operation until multiple long straight deep holes of 10m in length are drilled, finally drive the mechanical arm (3-5) to withdraw from the working plane, drive the walking mechanism (3-2) to the initial position, and complete the drilling work; Subsequently, a high-pressure sealer (9) is used to seal the plurality of long straight deep holes, and a pulsed water injection system (8) is used to inject pulsed water into the plurality of long straight deep holes. The long straight deep holes are further expanded under the action of the pulsed hydraulic force. When it is observed that the expansion range of the cracks reaches the requirement, the pulsed hydraulic fracturing work is completed, and then the high-pressure sealer (9) is removed; Step 2: Oscillating cutting and shipping The excavation equipment is adjusted to be located in the middle of the tunnel, the telescopic oil cylinder (2-3) is driven to adjust the oscillating cutting head (2-1), so that the alloy roller cutter (2-1-1) is aligned with the expanded deep hole, the excavator is driven to move forward, so that the alloy roller cutter (2-1-1) enters the expanded deep hole, and the telescopic oil cylinder (2-3) is adjusted at the same time so that the alloy roller cutter (2-1-1) crushes the rock mass according to the cutting path, and then the crushed rock fragments are loaded by the loading mechanism (5), and the crushed rock fragments are transported by the conveyor belt (6), and the above process is repeated until the cutting depth reaches 1m; Step 3: Temporary support and anchoring After the second step is completed, the excavation equipment is adjusted to be in a suitable position, and the hydraulic pump station of the excavation equipment is used to supply oil to push the hydraulic oil into the supporting cylinder (4-3), folding cylinder (4-4) and lifting cylinder (4-6) of the temporary support mechanism (4), and the lifting cylinder (4-6) is driven to lift the entire temporary support mechanism (4), and then the folding cylinder (4-4) is driven to raise the front support frame (4-2), and at the same time, the supporting cylinder (4-3) is driven to raise the top guard plate (4-1), and the supporting cylinder (4-3), the folding cylinder (4-4) and the lifting cylinder (4-6) are coordinated through the multi-way reversing valve until the top guard plate (4-1) and the front support frame (4-2) are adjusted to the required height and angle and the required supporting force is reached and then the operation stops; The walking mechanism (3-2) of the multifunctional drilling machine (3) is driven to move it forward to a suitable position on the sliding platform (3-1), the mechanical arm (3-5) is driven to move the drilling machine (3-8) forward to the position to be anchored, the front section of the hollow anchor rod body (3-13-1) is fixed with a centering device (3-13-4), the angle of the drilling machine (3-8) is adjusted, and the rear section of the hollow anchor rod body (3-13-1) is connected to the drilling machine (3-8) via a rotating grouting adapter (3-11); The drilling machine (3-8) is driven to make the drill bit (3-13-2) move forward, and the grouting machine (3-16) is used to perform grouting at the same time, so as to achieve the effect of simultaneous drilling and grouting, and the grouting is stopped after the hole mouth is slurried for 1 minute. After the slurry solidifies, a pad (3-13-5) is installed on the exposed section of the hollow anchor rod body (3-13-1) close to the rock surface, and then the pad (3-13-5) is fixed to the rock surface with a reinforcing bolt (3-13-6), and the above operation is repeated until all operations are completed at the anchor protection position; the grouting machine (3-16) uses pure cement slurry or 1:1 mortar during grouting, the particle size of the sand in the mortar is ≤1.0mm, and the water-cement ratio is controlled at 0.4-0.5; Step 4: Cycle excavation and support operations until the tunnel is connected After completing the above three steps, 1m of tunnel excavation is completed, and the two steps of oscillation cutting and transportation as well as temporary support and anchor protection are repeated until several 10m deep holes in the first step are milled, which means that one stage of tunnel excavation is completed; the three steps of drilling-pulse hydraulic fracturing-oscillation cutting and transportation-temporary support and anchor protection are repeated until the tunnel excavation is completed.

Images