Hydraulic cutting disc cutter combined with rock breaking and rock breaking method thereof

Abstract

The present invention discloses a hydraulic cutting roller for combined rock breaking. It has a spoke-type structure; it includes a tool center axis, a high-pressure water injection hole, a high-pressure water jet channel and a nozzle support annular belt frame; the high-pressure water injection hole is located in the tool center axis; the high-pressure water jet channel is vertically arranged with the tool center axis; one end of the high-pressure water jet channel is connected with the high-pressure water injection hole, and the other end is radially distributed along the nozzle support annular belt frame and is located on the nozzle support annular belt frame. The present invention has the advantage of improving rock breaking efficiency. The present invention also discloses a rock breaking method of the hydraulic cutting roller for combined rock breaking.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel and underground engineering, in particular to the field of TBM tunnel construction under complex geological conditions, and more specifically to a hydraulic cutting disc combined with rock breaking. The present invention also relates to a rock breaking method of the hydraulic cutting disc combined with rock breaking. Background Art

[0002] Traditional TBMs use mechanical cutters to break rocks. TBM cutters often have three states when breaking rocks, namely, too little penetration, appropriate penetration, and too much penetration. Under certain cutter spacing conditions, when the penetration is too little, the cracks generated under the cutter head will expand to the rock-breaking free surface (tunnel face) and form triangular rock chips, or the horizontal cracks generated by two adjacent cutters cannot intersect, and the rock ridges between the cutters cannot be cut and damaged. It takes many repeated rock breaking to achieve a good rock breaking effect, but this method will increase the energy consumption of rock breaking and affect the rock breaking efficiency; under certain cutter spacing conditions, when the penetration is too much, the rocks between adjacent cutters are cut into fine rock chips, particles, or even powder, and the rocks are over-broken, resulting in increased energy consumption and tool grinding; the appropriate penetration should form the largest rock breaking range with the minimum energy consumption and mechanism wear under certain cutter spacing conditions.

[0003] The rock-breaking penetration rate of conventional mechanical disc cutters with a constant cross-section is determined by TBM parameters and is adjusted for different face lithology types, but can only be adjusted for one type of face rock at a time. Due to the complex underlying geology and the staggered arrangement of rocks of various lithologies, the use of conventional machinery for rock breaking results in low efficiency, high energy consumption, and easy wear of the cutterhead. Furthermore, since it is difficult to find a suitable TBM penetration rate during construction, it is easy to cause loss of TBM cutting energy and wear of the cutterhead.

[0004] Conventional cutter structures used in existing TBM rock breaking methods include: the first rock breaking method is to use ordinary roller cutters to break rocks; the second rock breaking method is to randomly drill holes in the blank positions of the TBM cutter head and install water jet structures, so that the water jet structures and ordinary roller cutters are arranged at intervals, and hydraulic and mechanical combined rock breaking is adopted;

[0005] However, the first rock breaking method mentioned above requires a large maximum force to break the rock, and the cutter is easily worn, resulting in a low rock breaking efficiency.

[0006] The second rock breaking method mentioned above is used for rock breaking, such as the application number: 201310188881.X, and the patent name is "Arrangement method and structure of high-pressure water jets in the cutter head of a tunnel boring machine". On the basis of the main structure of the traditional TBM cutter head, a number of high-pressure water nozzles are randomly arranged at the blank positions of the TBM cutter head, which has the advantages of improving the rock breaking efficiency of the TBM, reducing the temperature of the cutter head, and preventing dust and cooling the environment. However, since it is necessary to specially open an opening on the TBM cutter head to install the high-pressure water jet, the structure is complicated, and the mechanical roller cutter is randomly cooled, which is not targeted. Since it is in a normally open state, it is easy to cause waste of water resources, high energy consumption for rock breaking, and cannot achieve the expected effect.

[0007] For example, the application number is CN105736006A, and the patent name is "Design Method for High-Pressure Water Jet Full-Section Rock Tunneling Machine Cutter Head". The inventors Huo Junzhou, Zhu Dong and others changed the shape of the traditional circular cutter head and adopted a two-cross spoke layout. The rock is crushed by the impact of the water jet on the four spokes and the rotation and extrusion of the cutter, which reduces the energy consumption of rock crushing. However, the changes to the traditional TBM cutter head are relatively large, the cost is high, and it is not conducive to implementation and application.

[0008] Moreover, during the rock-breaking process of the TBM tunnel boring machine, the TBM cutterhead may get stuck due to the influence of ground stress and rock strength characteristics, which seriously affects the excavation efficiency of the TBM and causes significant equipment damage and property losses. With the widespread application of full-section rock tunnel boring machines in tunnel construction projects such as water conservancy projects, subway projects, and transportation projects, higher requirements are placed on the excavation performance of TBMs. At present, my country's large-scale engineering construction is advancing by leaps and bounds, especially in the fields of water diversion tunnels, transportation tunnels, and protective engineering caverns. The excavation role of TBMs is becoming increasingly prominent, and it is urgent to improve the excavation efficiency of TBMs. At present, the most feasible form is the mechanical-hydraulic combined rock-breaking TBM. However, due to the current limitation of the hydraulic rock cutting rate, it cannot match the mechanical rock-breaking rate, resulting in the inability to significantly improve the overall rock-breaking efficiency.

[0009] Therefore, there is an urgent need to develop a rock breaking cutting disc with higher rock breaking efficiency and a rock breaking method thereof. Summary of the invention

[0010] The first purpose of the present invention is to provide a hydraulic cutting disc cutter combined with rock breaking; a spoke-type structure is adopted to provide high-pressure water jet cutting of rocks in the combined rock breaking; a spoke-type design is adopted and lightweight processing is used to reduce the weight of the disc cutter.

[0011] The second object of the present invention is to provide a rock breaking method using a hydraulic cutting disc combined with rock breaking, which has high working efficiency.

[0012] In order to achieve the first object of the present invention, the technical solution of the present invention is: a hydraulic cutting disc cutter combined with rock breaking, characterized in that: it is a spoke-type structure; it includes a tool center axis, a high-pressure water injection hole, a high-pressure water jet channel and a nozzle supporting annular belt frame;

[0013] The high-pressure water injection hole is located in the center axis of the tool;

[0014] The high-pressure water jet channel is arranged perpendicularly to the center axis of the tool;

[0015] One end of the high-pressure water jet channel is communicated with the high-pressure water injection hole, and the other end is radially distributed along the nozzle supporting annular belt frame and is located on the nozzle supporting annular belt frame.

[0016] In the above technical solution, the nozzle supporting annular belt frame is an annular belt structure.

[0017] In the above technical solution, it also includes a protective rigid sleeve structure and a high-pressure water jet nozzle;

[0018] The protective rigid sleeve structure is sleeved on the outer periphery of the high-pressure water jet channel;

[0019] The protective rigid sleeve structure is arranged perpendicularly to the center axis of the tool;

[0020] The high-pressure water jet nozzle is communicated with the high-pressure water jet channel and is located on the nozzle supporting annular belt-shaped frame.

[0021] In the above technical solution, there is a high-pressure water jet diversion structure located at the intersection of the high-pressure water injection hole and the high-pressure water jet channel, and located at the center of the nozzle supporting annular belt frame;

[0022] A reinforcement structure is located on the high-pressure water jet diversion structure.

[0023] In the above technical solution, a high-pressure water jet nozzle protection structure is provided on the high-pressure water jet nozzle and is located on the nozzle supporting annular belt frame.

[0024] In the above technical solution, a high-pressure water steering timing control valve is arranged on the high-pressure water jet channel and located on the protective rigid sleeve structure; the high-pressure water steering timing control valve is located in the nozzle supporting annular belt frame;

[0025] In the above technical solution, there are multiple high-pressure water jet channels.

[0026] In the above technical solution, there are six high-pressure water jet channels.

[0027] In the above technical solution, the high-pressure water jet nozzle is a variable aperture angle-adjustable nozzle;

[0028] The high-pressure water jet nozzle comprises a nozzle body, an angle adjustment knob and an angle adjustment controller;

[0029] The nozzle body is communicated with the high-pressure water jet channel and is located on the nozzle supporting annular belt frame;

[0030] The angle adjustment controller is arranged at the upper end of the nozzle body and is located at the connection between the nozzle body and the high-pressure water jet channel;

[0031] The angle adjustment knob is arranged on the angle adjustment controller.

[0032] In order to achieve the second object of the present invention, the technical solution of the present invention is: the rock breaking method of the hydraulic cutting disc combined with rock breaking is characterized by comprising the following steps:

[0033] Step 1: After the external high-pressure water is connected to the high-pressure water injection hole, it enters the high-pressure water jet diversion structure through the high-pressure water injection hole;

[0034] Step 2: The high-pressure water entering the pressure water jet diversion structure further enters each high-pressure water jet channel;

[0035] Step 3: The high-pressure water steering timing control valve controls the high-pressure water jet to break the rock;

[0036] When the high-pressure water steering timing control valve calculates the corresponding time when the corresponding high-pressure water jet channel should spray high-pressure water, the high-pressure water steering timing control valve opens, and the corresponding high-pressure water jet channel sprays high-pressure water to break the rock;

[0037] When the high-pressure water steering timing control valve calculates that the corresponding high-pressure water jet channel has reached the continuous injection time of high-pressure water, the high-pressure water steering timing control valve is closed and the corresponding high-pressure water jet channel stops injecting high-pressure water.

[0038] The present invention has the following advantages:

[0039] (1) The hydraulic cutting hob of the present invention only serves as a high-pressure water jet injection and control device, which reduces the functional complexity;

[0040] (2) The hydraulic cutting hob of the present invention adopts a spoke-type design, and the lightweight treatment reduces the weight of the hob;

[0041] (3) The high-pressure water jet nozzle of the present invention is provided with a protective mechanism, which can play a role in reducing nozzle wear;

[0042] (4) The high-pressure water jet nozzle of the present invention can be replaced, thereby extending the service life of the tool;

[0043] (5) The high-pressure water steering timing control valve of the present invention can accurately control the time for the high-pressure water jet channel to spray high-pressure water, accurately spray high-pressure water to break rocks, and save energy consumption;

[0044] (6) The nozzle support annular belt frame of the present invention is subjected to relatively small force, in order to ensure that the hydraulic cutting tool module is always in close contact with the rock face for water jet cutting, thereby improving rock breaking efficiency; the nozzle support annular belt frame plays a rolling walking role and does not bear pressure;

[0045] (7) The present invention can be implemented without major changes to the existing TBM cutterhead, and has a higher degree of industrial feasibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the side cross-sectional structure of the hydraulic cutting disc cutter combined with rock breaking of the present invention.

[0047] Figure 2 for Figure 1 Enlarged view of point A.

[0048] Figure 3 for Figure 2 Top view of the .

[0049] Figure 4 It is a schematic diagram of the main structure of the hydraulic cutting disc cutter combined with rock breaking of the present invention.

[0050] Figure 5 It is a schematic diagram of the partial perspective structure of the hydraulic cutting disc cutter combined with rock breaking of the present invention from the front view.

[0051] Figure 6 It is a schematic structural diagram of the high-pressure water jet nozzle of the present invention being a variable aperture angle-adjustable nozzle.

[0052] Figure 7 for Figure 6 Top view of the .

[0053] Figure 8 for Figure 6 Schematic diagram of the structure after adjusting the angle.

[0054] Fig. 9 It is a schematic diagram of rock breaking of the hydraulic cutting disc cutter combined with rock breaking of the present invention.

[0055] Fig. 9 In the figure, A represents the rock surface before cutting; B represents the rock surface after cutting; FN represents the driving force; M represents the rotation direction of the hydraulic cutting disc cutter for combined rock breaking; T represents the impact force of the water jet; H represents the water jet cutting depth; L represents the trend curve of the water jet cutting depth; O represents the starting point of the TBM cutter head structure injection; P represents the lowest position point of the TBM cutter head structure;

[0056] T1 represents the first high-pressure water jet nozzle on the hydraulic cutting hob for combined rock breaking; T2 represents the second high-pressure water jet nozzle on the hydraulic cutting hob for combined rock breaking; T3 represents the third high-pressure water jet nozzle on the hydraulic cutting hob for combined rock breaking; T4 represents the fourth high-pressure water jet nozzle on the hydraulic cutting hob for combined rock breaking; T5 represents the fifth high-pressure water jet nozzle on the hydraulic cutting hob for combined rock breaking; T6 represents the sixth high-pressure water jet nozzle on the hydraulic cutting hob for combined rock breaking;

[0057] Among them, T4, T5 and T6 are in the non-spraying state; T1 and T2 are in the spraying state; T3 indicates the about-to-spray state; (T1 has passed point P and can still spray backwards to deepen the depth of the groove that has been cut out at the rear, that is, the maximum angle of the high-pressure water jet is 180° below the horizontal line of the center of the cutter disc)

[0058] The force generated by the water jet has different magnitudes at different positions away from the nozzle. The farther away from the nozzle, the smaller the force. Therefore, in order to cut hydraulic grooves of equal depth, the water pressure needs to be adjusted. That is, when the nozzle at point O (the third nozzle) is about to start spraying, the required water pressure is the largest, and the water pressure required at point P, the lowest position of the cutter disc, is the smallest.

[0059] The hydraulic cutting disc cutter combined with rock breaking of the present invention adopts a spoke structure, which is only used for high-pressure water jet cutting of rocks, and does not need to be used for rolling and crushing rocks. The spoke design can reduce the weight of the overall structure to the maximum extent, while achieving a better water jet spraying effect.

[0060] In the figure, 1- tool center axis, 2- high-pressure water injection hole, 3- high-pressure water jet channel, 4- protective rigid sleeve structure, 5- high-pressure water jet nozzle, 5.1- nozzle body, 5.2- angle adjustment knob, 5.3- angle adjustment controller, 6- nozzle support annular belt frame, 7- high-pressure water jet diversion structure, 8- reinforcement structure, 9- high-pressure water steering timing control valve, 10- high-pressure water jet nozzle protection structure, 26- water jet grooving. DETAILED DESCRIPTION

[0061] The following is a detailed description of the implementation of the present invention in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only used as examples. At the same time, the advantages of the present invention are made clearer and easier to understand through the description.

[0062] Referring to the attached drawings, it can be seen that the hydraulic cutting disc cutter for combined rock breaking is characterized by: a spoke-type structure; comprising a tool center axis 1, a high-pressure water injection hole 2, a high-pressure water jet channel 3, a protective rigid sleeve structure 4, a high-pressure water jet nozzle 5, and a nozzle supporting annular belt frame 6;

[0063] The high-pressure water injection hole 2 is located in the tool center axis 1 and at the center of the tool center axis 1; the tool center axis is the central bearing of the hydraulic cutting hob, and the hydraulic cutting hob can be axially centered on the tool center axis; the high-pressure water injection hole is located at the center of the tool center axis and is concentric with the tool center axis;

[0064] The protective rigid sleeve structure 4 is sleeved on the outer periphery of the high-pressure water jet channel 3; the high-pressure water jet channel protective rigid sleeve structure is located outside the high-pressure water jet channel, and plays the role of protecting the high-pressure water jet channel and supporting the high-pressure water jet nozzle supporting annular belt frame;

[0065] The protective rigid sleeve structure 4 and the high-pressure water jet channel 3 vertically pass through the tool center axis 1;

[0066] One end of the high-pressure water jet channel 3 is connected to the high-pressure water injection hole 2, and the other end is radially distributed along the nozzle support annular belt frame 6 and is located on the nozzle support annular belt frame 6; the high-pressure water jet channel 3 is centered on the high-pressure water injection hole 2 and radiates to the nozzle support annular belt frame 6, forming a spoke structure;

[0067] The high-pressure water jet nozzle 5 is connected to the high-pressure water jet channel 3 and is located on the nozzle supporting annular belt frame 6 (such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 shown).

[0068] Furthermore, the nozzle supporting annular belt frame 6 is an annular belt structure; it can realize the rolling of the hydraulic cutting hob and is used to install the high-pressure water jet nozzle at the same time.

[0069] Furthermore, there is a high-pressure water jet diversion structure 7 located at the intersection of the high-pressure water injection hole 2 and the high-pressure water jet channel 3 and at the center of the nozzle support annular belt frame 6 (such as Figure 1 , Figure 5 As shown); the high-pressure water jet diversion structure 7 has a diversion effect;

[0070] A reinforcement structure 8 is located on the high-pressure water jet diversion structure 7 (such as Figure 1 , Figure 5 As shown); the reinforcement structure 8 plays a role in strengthening protection.

[0071] Furthermore, a high-pressure water jet nozzle protection structure 10 is provided on the high-pressure water jet nozzle 5 and is located on the nozzle supporting annular belt frame 6 (such as Figure 1 , Figure 4 , Figure 5As shown); the high-pressure water jet nozzle protection structure 10 is used to protect the high-pressure water jet nozzle 5 and prevent the high-pressure water jet nozzle 5 from wear.

[0072] Furthermore, a high-pressure water steering timing control valve 9 is provided on the high-pressure water jet channel 3 and is located on the protective rigid sleeve structure 4; the high-pressure water steering timing control valve 9 is located in the nozzle supporting annular belt frame 6 (such as Figure 1 , Figure 4 , Figure 5 The high-pressure water steering timing control valve 9 is used to control the opening and closing of the high-pressure water jet channel 3. The number of the high-pressure water steering timing control valves 9 is consistent with the number of the high-pressure water jet channels 3. The high-pressure water steering timing control valve 9 is set by the torque of the TBM cutter disc. According to the arrangement position of the hydraulic cutting disc on the cutter disc, the rolling speed of the hydraulic cutting disc is calculated and timed to control the opening and closing of the high-pressure water jet channel 3.

[0073] Furthermore, the high-pressure water jet channel 3 has multiple (such as Figure 4 , Figure 5 As shown); the number of high-pressure water jet channels 3 is set according to the actual rock breaking requirements; the hydraulic cutting hob has multiple high-pressure water jet channels 3, which can be set to a certain program, through the control of the high-pressure water steering timing control valve 9 and the angle adjustment controller 5.3 on the high-pressure water jet nozzle 5, the high-pressure water of the hydraulic cutting hob 6 has the function of deepening the water groove and widening the water groove during the rotation cutting process.

[0074] Furthermore, the high-pressure water jet channel 3 has six (eg Figure 4 , Figure 5 shown).

[0075] Furthermore, the high-pressure water jet nozzle 5 is a variable aperture angle-adjustable nozzle;

[0076] The high-pressure water jet nozzle 5 comprises a nozzle body 5.1, an angle adjustment knob 5.2 and an angle adjustment controller 5.3;

[0077] The nozzle body 5.1 is in communication with the high-pressure water jet channel 3 and is located on the nozzle supporting annular belt frame 6;

[0078] The angle adjustment controller 5.3 is arranged at the upper end of the nozzle body 5.1 and is located at the connection between the nozzle body 5.1 and the high-pressure water jet channel 3;

[0079] The angle adjustment knob 5.2 is arranged on the angle adjustment controller 5.3 (such as Figure 6 , Figure 7 , Figure 8The nozzle body 5.1 is a prior art; the angle adjustment knob 5.2 on the variable aperture angle adjustment nozzle can change the aperture size of the nozzle body 5.1 through the control of the angle adjustment controller 5.3 to complete the regulation and control of the water pressure of the high-pressure water jet; the smaller the aperture of the water jet pipeline nozzle, the greater the output water pressure;

[0080] In the rotating forward direction of the combined rock-breaking hydraulic cutting disc, the first high-pressure water jet nozzle is responsible for cracking the rock. After a period of cracking, the angle adjustment controller adjusts the aperture size of the high-pressure water jet nozzle through the angle adjustment knob, reduces the aperture of the high-pressure water jet nozzle, and pressurizes the high-pressure water jet to increase the cutting depth. Similarly, the aperture size of all high-pressure water jet channels can be adjusted in time during the rotation process to achieve the purpose of increasing the cutting depth of the rock face.

[0081] Referring to the attached drawings, it can be seen that the rock breaking method of the hydraulic cutting disc combined with rock breaking is characterized by comprising the following steps:

[0082] Step 1: The high-pressure water injection hole 2 is an injection channel for external high-pressure water. After the external high-pressure water is connected to the high-pressure water injection hole 2, it enters the high-pressure water jet diversion structure 7 through the high-pressure water injection hole 2;

[0083] Step 2: The high-pressure water jet flow diversion structure 7 is connected to each high-pressure water jet channel 3; the high-pressure water entering the high-pressure water jet flow diversion structure 7 further enters each high-pressure water jet channel 3;

[0084] Step 3: The high-pressure water steering timing control valve 9 controls the high-pressure water jet to break the rock;

[0085] The high-pressure water steering timing control valve 9 is set by the torque of the TBM cutter disc, and according to the arrangement position of the hydraulic cutting disc on the cutter disc, the rolling speed of the hydraulic cutting disc is calculated and timed to control the opening and closing of the high-pressure water jet channel 3;

[0086] When the high-pressure water steering timing control valve 9 calculates the corresponding time when the corresponding high-pressure water jet channel 3 should spray high-pressure water, the high-pressure water steering timing control valve 9 is opened, and the corresponding high-pressure water jet channel 3 sprays high-pressure water to break the rock;

[0087] When the high-pressure water steering timing control valve 9 calculates that the corresponding high-pressure water jet channel 3 has reached the continuous injection time of the high-pressure water, the high-pressure water steering timing control valve 9 is closed, and the corresponding high-pressure water jet channel 3 stops injecting high-pressure water (such as Figure 1 , Figure 4 , Figure 5 , Fig. 9 As shown); ensure the rock breaking effect of high-pressure water jet and save operating costs.

[0088] In order to more clearly illustrate the advantages of the combined rock-breaking hydraulic cutting disc and its rock-breaking method of the present invention compared with the mechanical disc and its rock-breaking method of the prior art, the staff compared the two technical solutions, and the comparison results are shown in the following table:

[0089]

[0090] It can be seen from the above table that the combined rock-breaking hydraulic cutting disc and rock-breaking method thereof described in the present invention can improve rock-breaking efficiency, reduce rock-breaking energy consumption, reduce mechanical wear, improve project progress, and reduce project costs compared with the mechanical disc and rock-breaking method thereof in the prior art.

[0091] Other parts not described belong to the prior art.

Claims

1. Hydraulic cutting disc cutter combined with rock breaking, characterized by: It has a spoke-type structure; it includes a tool center axis (1), a high-pressure water injection hole (2), a high-pressure water jet channel (3) and a nozzle supporting annular belt frame (6); The high-pressure water injection hole (2) is located inside the tool center axis (1); The high-pressure water jet channel (3) is arranged perpendicular to the center axis (1) of the tool; One end of the high-pressure water jet channel (3) is connected to the high-pressure water injection hole (2), and the other end is distributed radially along the nozzle supporting annular belt-shaped frame (6) and is located on the nozzle supporting annular belt-shaped frame (6); It also includes a protective rigid sleeve structure (4) and a high-pressure water jet nozzle (5); The protective rigid sleeve structure (4) is sleeved on the outer periphery of the high-pressure water jet channel (3); The protective rigid sleeve structure (4) is arranged vertically to the tool center axis (1); The high-pressure water jet nozzle (5) is in communication with the high-pressure water jet channel (3) and is located on the nozzle supporting annular belt-shaped frame (6); A high-pressure water jet diversion structure (7) is located at the intersection of the high-pressure water injection hole (2) and the high-pressure water jet channel (3), and is located at the center of the nozzle supporting annular belt frame (6); A reinforcement structure (8) is located on the high-pressure water jet diversion structure (7); A high-pressure water diversion timing control valve (9) is arranged on the high-pressure water jet channel (3) and located on the protective rigid sleeve structure (4); the high-pressure water diversion timing control valve (9) is located in the nozzle supporting annular belt frame (6); The high-pressure water jet channels (3) are multiple; The high-pressure water jet nozzle (5) is a nozzle with a variable aperture and adjustable angle; The high-pressure water jet nozzle (5) comprises a nozzle body (5.1), an angle adjustment knob (5.2) and an angle adjustment controller (5.3); The nozzle body (5.1) is in communication with the high-pressure water jet channel (3) and is located on the nozzle supporting annular belt-shaped frame (6); The angle adjustment controller (5.3) is arranged at the upper end of the nozzle body (5.1) and is located at the connection between the nozzle body (5.1) and the high-pressure water jet channel (3); The angle adjustment knob (5.2) is arranged on the angle adjustment controller (5.3); The angle adjustment knob (5.2) on the variable aperture angle adjustment nozzle changes the aperture size of the nozzle body (5.1) through the control of the angle adjustment controller (5.3); In the rotational forward direction of the combined rock-breaking hydraulic cutting disc, the first high-pressure water jet nozzle (5) is responsible for cracking the rock. After a period of cracking, the angle adjustment controller (5.3) adjusts the aperture size of the high-pressure water jet nozzle (5) through the angle adjustment knob (5.2), and reduces the aperture of the high-pressure water jet nozzle (5) to increase the pressure of the high-pressure water jet, thereby increasing the cutting depth. Similarly, all high-pressure water jet channels (3) adjust the aperture size in time during the rotation process to achieve the purpose of increasing the cutting depth of the rock face.

2. The hydraulic cutting disc cutter for combined rock breaking according to claim 1 is characterized by: A high-pressure water jet nozzle protection structure (10) is arranged on the high-pressure water jet nozzle (5) and is located on the nozzle supporting annular belt-shaped frame (6).

3. The hydraulic cutting disc cutter combined with rock breaking according to claim 1 is characterized by: There are six high-pressure water jet channels (3).

4. The rock breaking method using a hydraulic cutting disc combined with rock breaking according to any one of claims 1 to 3, characterized in that: The following steps are included: Step 1: After the external high-pressure water is connected to the high-pressure water injection hole (2), it enters the high-pressure water jet diversion structure (7) through the high-pressure water injection hole (2); Step 2: The high-pressure water entering the high-pressure water jet diversion structure (7) further enters each high-pressure water jet channel (3); Step 3: The high-pressure water steering timing control valve (9) controls the high-pressure water jet to break the rock; When the high-pressure water steering timing control valve (9) calculates the corresponding time for the corresponding high-pressure water jet channel (3) to spray high-pressure water, the high-pressure water steering timing control valve (9) is opened, and the corresponding high-pressure water jet channel (3) sprays high-pressure water to break rocks; When the high-pressure water steering timing control valve (9) calculates that the corresponding high-pressure water jet channel (3) has reached the continuous jetting time of jetting high-pressure water, the high-pressure water steering timing control valve (9) is closed, and the corresponding high-pressure water jet channel (3) stops jetting high-pressure water.

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