Mechanical-hydraulic combined rock breaking comprehensive test bench and its test method

Abstract

The present invention discloses a mechanical-hydraulic combined rock breaking comprehensive test bench. It includes a sample loading mechanism, a sample confining pressure applying mechanism, a sample axial pressure applying mechanism, a torque applying mechanism, a cutter disc working mechanism, and a rigid reaction force frame; the rigid reaction force frame is arranged on the periphery of the sample loading mechanism, the sample confining pressure applying mechanism, the sample axial pressure applying mechanism, the torque applying mechanism and the cutter disc working mechanism; the sample loading mechanism is located in the sample confining pressure applying mechanism; the cutter disc working mechanism is located above the sample confining pressure applying mechanism; the upper end of the torque applying mechanism is movably connected to the upper part of the rigid reaction force frame, and the lower end is connected to the cutter disc working mechanism; the sample axial pressure applying mechanism is arranged on the torque applying mechanism. The present invention has the advantages of being able to implement linear rock breaking, rotary rock breaking, and rock breaking tests with or without confining pressure, and being able to collect mechanical data of rock samples. The present invention also discloses a test method of the mechanical-hydraulic combined rock breaking comprehensive test bench.

Description

Technical Field

[0001] The present invention relates to the field of tunnel and underground engineering, in particular to the field of combined rock breaking test and rock breaking mechanism research, more specifically, it is a mechanical-hydraulic combined rock breaking comprehensive test bench. The present invention also relates to a test method of the mechanical-hydraulic combined rock breaking comprehensive test bench. Background Art

[0002] With the wide application of full-face rock tunnel boring machines in tunnel construction projects such as water conservancy projects, subway projects, and transportation projects, higher requirements have been placed on the performance of TBM tunneling devices. In recent years, many scientific researchers have started to study the joint rock-breaking TBM based on the traditional TBM mechanical rock-breaking.

[0003] Chinese patent number: CN103244119A, the patent name is "Arrangement method and structure of high-pressure water jet in the cutterhead of a tunnel boring machine". The inventors Zhang Chunguang, Wei Jing and others invented a method of arranging a number of high-pressure water nozzles on the basis of the main structure of the traditional TBM cutterhead to improve the rock breaking efficiency of the TBM; it achieves the purpose of improving the rock breaking efficiency of the TBM by adding a new module (high-pressure nozzle) to re-arrange the cutterhead; it sets the installation position of the high-pressure water jet nozzle in front of the mechanical roller cutter, and adopts the method of hydraulic cutting first and mechanical rolling; the nozzle position is installed in front of the roller cutter, and the actual work is equivalent to cutting a water jet groove first, and the mechanical roller cutter presses behind it. This rock breaking method requires greater pressure;

[0004] Chinese patent number: CN105736006A, patent name is "High-pressure water jet full-section rock tunnel boring machine cutter head design method", inventors Huo Junzhou, Zhu Dong and others changed the shape of the traditional circular cutter head, using two cross-shaped spoke layout, through the impact of water jets on the four spokes and the rotation and extrusion of the cutter to break the rock, reducing the energy consumption of rock breaking; but it has a significant change in the overall structure of the cutter head, and the degree of industrial feasibility is not high.

[0005] Although many new mechanical-hydraulic combined rock breaking TBMs have been researched and designed, TBM rock breaking still faces the problems of high energy consumption, excessive changes in the shape of the existing TBM cutterheads are difficult to achieve under complex construction conditions, and the rock breaking efficiency needs to be further optimized.

[0006] At present, existing TBMs and those under development all carry out construction operations under a certain working condition. They cannot make real-time adjustments according to the actual mechanical properties of the excavated strata during the construction process, and the problem of "a big horse pulling a small cart" often occurs, resulting in increased energy consumption of the TBM and increased costs of tunnel construction projects.

[0007] Therefore, there is an urgent need to develop a comprehensive mechanical-hydraulic combined rock breaking test bench that can carry out linear rock breaking, rotary rock breaking and rock breaking tests with or without confining pressure, so as to provide rock breaking data for mechanical-hydraulic combined rock breaking. Summary of the invention

[0008] The first purpose of the present invention is to provide a mechanical-hydraulic combined rock breaking comprehensive test bench, which can implement linear rock breaking, rotary rock breaking and rock breaking tests with and without confining pressure, collect mechanical data of rock samples, and use the combined rock breaking comprehensive test bench to simulate rock confining pressure conditions under laboratory conditions to obtain optimal water jet water pressure and mechanical cutter thrust and other parameters, thereby providing optimal rock breaking data for mechanical-hydraulic combined rock breaking.

[0009] The second purpose of the present invention is to provide a test method for the mechanical-hydraulic combined rock breaking comprehensive test bench, which can implement linear rock breaking, rotary rock breaking and rock breaking tests with or without confining pressure; it can collect mechanical data of rock samples, and use the combined rock breaking comprehensive test bench to simulate rock confining pressure conditions under laboratory conditions to obtain optimal water jet water pressure and mechanical cutter thrust and other parameters, provide test data to guide TBM cutter thrust and water jet water pressure in combined rock breaking, and provide optimal rock breaking data for mechanical-hydraulic combined rock breaking.

[0010] In order to achieve the first object of the present invention, the technical solution of the present invention is: a mechanical-hydraulic combined rock breaking comprehensive test bench, characterized in that it includes a sample loading mechanism, a sample confining pressure applying mechanism, a sample axial pressure applying mechanism, a torque applying mechanism, a cutterhead working mechanism, and a rigid reaction force frame;

[0011] The rigid reaction force frame is arranged on the periphery of the sample loading mechanism, the sample confining pressure applying mechanism, the sample axial pressure applying mechanism, the torque applying mechanism and the cutter disc working mechanism;

[0012] The sample loading mechanism is located inside the sample confining pressure applying mechanism;

[0013] The cutter disc working mechanism is located above the sample confining pressure applying mechanism;

[0014] The upper end of the torque applying mechanism is movably connected to the upper end of the rigid reaction force frame, and the lower end is connected to the cutter head working mechanism;

[0015] The sample axial pressure applying mechanism is arranged on the torque applying mechanism and is located above the cutter disc working mechanism.

[0016] In the above technical solution, the cutter disc working mechanism includes a hydraulic cutting disc, a combined rock breaking test bench cutter disc and a water jet rotation adjustment unit; the hydraulic cutting disc is circumferentially arranged on the combined rock breaking test bench cutter disc;

[0017] The hydraulic cutting roller includes a tool body, a tool center axis, a tool reinforcement part, a high-pressure water injection hole, a middle connecting device and a high-pressure water jet channel;

[0018] The tool center axis is located on the center line of the tool body and is the bearing part of the tool body;

[0019] The tool reinforcement parts are respectively located on both side surfaces of the tool body;

[0020] The high-pressure water injection hole is located in the center axis of the tool and runs through the tool body transversely;

[0021] The middle connecting device is located in the middle of the high-pressure water injection hole and in the center of the tool body;

[0022] The high-pressure water jet channel is arranged in the tool body and is communicated with the middle connecting device.

[0023] In the above technical solution, there are multiple high-pressure water jet channels; the high-pressure water jet channels are arranged radially with the middle connecting device as the center;

[0024] The high-pressure water jet channel is provided with a nozzle; the nozzle is communicated with the high-pressure water jet channel and is provided on the outer periphery of the tool body;

[0025] The high-pressure water jet channel is arranged on the longitudinal center plane of the tool body;

[0026] The high-pressure water jet channel is provided with a water flow control valve; the water flow control valve is located between the middle connecting device and the nozzle.

[0027] In the above technical solution, a tool steering sensor is arranged on the side of the tool body; a sensor circuit channel is located in the tool body and the tool reinforcement part, and is located between the water flow control valve and the tool steering sensor;

[0028] The sensing circuit channel is a hollow structure;

[0029] A sensing circuit is arranged in the sensing circuit channel; the water flow control valve is connected to the tool steering sensor through the sensing circuit;

[0030] The tool body is in a roller shape.

[0031] In the above technical solution, the water jet rotating regulating part comprises a high-pressure water pipeline docking port and a water jet rotating regulating part disc; the high-pressure water pipeline docking port is arranged on the water jet rotating regulating part disc;

[0032] The water jet rotary adjustment part disc is fixedly connected to the cutter disc of the combined rock breaking test bench;

[0033] The high-pressure water pipe docking interface comprises a front end of the high-pressure water pipe docking interface and a rear end of the high-pressure water pipe docking interface; the rear end of the high-pressure water pipe docking interface is connected to the high-pressure water tank through an external high-pressure water inlet pipe;

[0034] The front end of the high-pressure water pipe docking interface is connected to the high-pressure water injection hole;

[0035] The front end of the high-pressure water pipe docking port rotates synchronously with the water jet rotation regulating part and rotates synchronously with the cutter head of the combined rock breaking test bench.

[0036] In the above technical solution, the sample loading mechanism includes a sample mounting platform base, a sample mounting platform, a guide rail base, a hydraulic propulsion device guide rail, and a sample mounting position;

[0037] The sample mounting platform is arranged on the sample mounting platform base; the four corners of the sample mounting platform are provided with threaded holes for mounting rigid force rods;

[0038] The guide rail base is arranged around the sample installation platform base and is located around the sample installation position;

[0039] The guide rail of the hydraulic propulsion device is arranged on the guide rail base and on the sample installation platform; one end of the guide rail of the hydraulic propulsion device is smoothly connected with the sample installation platform.

[0040] In the above technical solution, the sample confining pressure applying mechanism includes a confining pressure applying hydraulic propulsion device and a slider; the slider is arranged at the lower end of the confining pressure applying hydraulic propulsion device;

[0041] There are four confining pressure applying hydraulic propulsion devices, and the four confining pressure applying hydraulic propulsion devices are all slidably connected to the hydraulic propulsion device guide rail through the slider;

[0042] When the four confining pressure applying hydraulic propulsion devices are moved to the specimen installation position, they are connected to form a four-sided closed structure;

[0043] In the above technical solution, the specimen axial pressure applying mechanism includes a rigid lifting hydraulic cylinder, an upper oil inlet / return port, a lower oil inlet / return port, an upper mounting platform of a rigid force-bearing rod, a rigid force-bearing rod, an upper mounting through hole of the rigid force-bearing rod, and an upper mounting nut of the rigid force-bearing rod;

[0044] The upper mounting platform of the rigid force-bearing rod is spaced apart from the sample mounting platform;

[0045] The rigid lifting hydraulic cylinder and the rigid force-bearing rod upper mounting nut are both located at the upper end of the rigid force-bearing rod upper mounting platform; the upper oil inlet / return port and the lower oil inlet / return port are arranged at intervals from top to bottom on the side of the rigid lifting hydraulic cylinder;

[0046] The upper mounting through holes of the rigid force-bearing rod are respectively arranged on the four corners of the upper mounting platform of the rigid force-bearing rod and are located outside the rigid lifting hydraulic cylinder;

[0047] The lower end of the rigid stress-bearing rod is threadedly connected to the rigid stress-bearing rod mounting threaded hole, and the upper end passes through the rigid stress-bearing rod upper mounting through hole from bottom to top, and is fixed to the upper end of the rigid stress-bearing rod upper mounting platform through the rigid stress-bearing rod upper mounting nut.

[0048] In the above technical solution, the torque application mechanism includes a torque application motor, a rigid rotating column, and a rigid rotating sealing test bench;

[0049] The rigid rotating column and the rigid rotating seal test bench are an integrated structure;

[0050] The rigid lifting hydraulic cylinder is of hollow structure;

[0051] The upper end of the rigid rotating column is connected to the torque applying motor, and the lower end vertically passes through the middle of the rigid lifting hydraulic cylinder downward and is fixed on the cutter head of the combined rock breaking test bench;

[0052] The rigid rotary seal test bench is located in the rigid lifting hydraulic cylinder;

[0053] The internal space of the rigid lifting hydraulic cylinder is divided into an upper oil chamber of the rigid hydraulic lifting cylinder and a lower oil chamber of the rigid hydraulic lifting cylinder by the rigid rotary seal test bench and the rigid rotary column;

[0054] The upper oil inlet / return port is arranged on the side end surface of the upper oil chamber of the rigid hydraulic lifting cylinder and is communicated with the upper oil chamber of the rigid hydraulic lifting cylinder;

[0055] The lower oil inlet / return port is arranged on the side end surface of the lower oil chamber of the rigid hydraulic lifting cylinder and is communicated with the lower oil chamber of the rigid hydraulic lifting cylinder.

[0056] In the above technical solution, the rigid reaction frame includes a rigid reaction frame platform, a supporting synchronous rotating table and a rigid reaction frame;

[0057] There are two rigid reaction frame platforms, and the two rigid reaction frame platforms are spaced apart at the upper end of the rigid reaction frame;

[0058] The supporting synchronous rotating platform is fixed on the rigid reaction frame and is located below the rigid reaction frame platform;

[0059] A torque application motor fixing hole is provided in the middle of the rigid reaction force frame platform;

[0060] A rigid rotating column through hole is provided in the middle of the supporting synchronous rotating platform; the torque applying motor is fixed on the torque applying motor fixing hole; the rigid rotating column is rotatably connected to the rigid rotating column through hole;

[0061] The rigid reaction frame is fixed to the outer periphery of the sample mounting platform through the rigid reaction frame mounting base.

[0062] In order to achieve the second object of the present invention, the technical solution of the present invention is: the test method of the mechanical-hydraulic combined rock breaking comprehensive test bench is characterized by comprising the following steps:

[0063] Step 1: Sample loading

[0064] Install the rock sample in the sample installation position;

[0065] The confining pressure applying mechanism and the axial pressure applying mechanism of the sample that have been loaded are connected through a rigid stress-bearing rod;

[0066] Step 2: Axis pressure control

[0067] At the starting position, the lower oil chamber is filled with oil, and the specimen mounting platform is located on the specimen mounting platform base;

[0068] Gradually use the hydraulic station to supply oil from the upper oil inlet / return port, return oil from the lower oil inlet / return port, fill the upper oil chamber of the rigid hydraulic lifting cylinder with oil, and the entire specimen axial pressure application mechanism runs upward;

[0069] Until the hydraulic cutting disc of the cutterhead working mechanism contacts the upper surface of the rock sample, continue to fill the oil chamber at the upper part of the rigid hydraulic lifting cylinder with oil, and apply axial pressure to the rock sample;

[0070] Continue to fill the upper oil chamber of the rigid hydraulic lifting cylinder with oil, and the roller cutter breaks the rock;

[0071] Step 3: Torque Control

[0072] From the moment the hydraulic cutting disc contacts the upper surface of the rock sample, while continuing to apply axial pressure, the torque application mechanism works; the torque application motor drives the rigid rotating column, thereby driving the cutter head of the combined rock breaking test bench to rotate and break the rock.

[0073] The present invention has the following advantages:

[0074] (1) The present invention develops a new cutterhead arrangement method for combined rock breaking test equipment, a new sample confining pressure and axial pressure loading implementation method, and a new synchronous rotation adjustment mechanism for hydraulic rock breaking, which can implement linear rock breaking, rotary rock breaking, and rock breaking tests with or without confining pressure. The test bench cutterhead on the test bench described in the present invention can be installed with both ordinary tools for testing and hydraulic cutting discs, so as to implement two types of rock breaking tests: ordinary mechanical discs and hydraulic cutting discs. The present invention is fully functional and can solve various existing rock breaking problems to the greatest extent.

[0075] (2) The present invention can collect mechanical data of rock samples, and use a combined rock breaking comprehensive test bench to simulate rock confining pressure conditions under laboratory conditions to obtain optimal water jet pressure and mechanical cutter thrust and other parameters, provide test data to guide TBM cutter thrust and water jet pressure in combined rock breaking, and provide optimal rock breaking data for mechanical-hydraulic combined rock breaking;

[0076] (3) In the actual working process of the present invention, the working condition parameters can be provided for the combined rock breaking, so that the combined rock breaking can adjust the working state of the TBM in real time, so that the TBM can obtain the optimal rock breaking parameter combination with low energy consumption and high rock breaking efficiency, reduce construction energy consumption, and solve the engineering cost; and overcome the problem of the existing technology of a big horse pulling a small cart during the construction process;

[0077] (4) The present invention integrates the mechanical hob structure and the high-pressure water jet structure, optimizes the cutter head arrangement, and forms a new cutter. Compared with the simple superposition method, the water mist of the hydraulic cutting hob of the present invention covers the mechanical cutter part more evenly, and water flows inside the cutter, which has a better cooling effect.

[0078] (5) The present invention has the advantages of energy saving, high efficiency and high rock breaking efficiency; the present invention is equipped with a hydraulic cutting roller, and the hydraulic cutting part (high-pressure water jet) of the hydraulic cutting roller pre-cuts a groove in front of the cutter head in the rolling direction, and the hydraulic cutting will form a groove of a certain width and depth (i.e., a water jet groove). The hydraulic cutting process will initially crush the rock on the face, and on this basis, the rock breaking device advances the roller device to roll and cut the hydraulic groove; the follow-up of the hydraulic cutting roller extends and expands the rock cracks formed by the hydraulic groove, and the cracks between the connected hydraulic cutting rollers intersect; the rock blocks between the adjacent hydraulic cutting rollers are cut into triangular rock chips and elliptical or plate-shaped rock chips; the penetration of the mechanical cutter head equipped with the hydraulic cutting roller during rock breaking of the present invention is relatively small;

[0079] (6) 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

[0080] Figure 1It is a schematic diagram of the structure of the present invention.

[0081] Figure 2 It is a schematic diagram of the front view structure of the hydraulic cutting hob of the present invention.

[0082] Figure 3 This is a schematic diagram of the cutter head structure of the combined rock breaking test bench equipped with a hydraulic cutting disc of the present invention.

[0083] Figure 4 It is a schematic diagram of the structure of the water jet rotation adjustment part of the present invention.

[0084] Figure 5 This is a schematic diagram of the structure of the high-pressure water pipe interface of the utility model.

[0085] Figure 6 This is a schematic diagram of the structure of the confining pressure applying hydraulic propulsion device of the present invention after installation.

[0086] Figure 7 This is a structural schematic diagram of the sample loading mechanism before the confining pressure applying hydraulic propulsion device of the present invention is installed.

[0087] Figure 8 It is a schematic diagram of the top view of the connection structure of the sample loading mechanism and the sample confining pressure applying mechanism of the present invention.

[0088] Fig. 9 It is a structural schematic diagram of the sample confining pressure applying mechanism of the present invention installed on the sample mounting platform.

[0089] Fig.10 It is a schematic diagram of the front view structure of the sample confining pressure applying mechanism of the present invention.

[0090] Fig.11 It is a schematic diagram of the top view of the structure of the sample confining pressure applying mechanism of the present invention.

[0091] Fig.12 It is a front view structural schematic diagram of the sample axial pressure applying mechanism of the present invention.

[0092] Fig.13 It is a schematic diagram of the top view of the structure of the sample axial pressure applying mechanism of the present invention.

[0093] Fig.14 It is a schematic diagram of the rigid force-bearing rod structure of the present invention.

[0094] Fig.15 It is a schematic diagram of the assembly of the axial pressure applying mechanism for the sample of the present invention.

[0095] Fig.16 It is a schematic diagram of the front view structure of the torque applying mechanism of the present invention.

[0096] Fig.17 It is a schematic diagram of the top view of the torque applying mechanism of the present invention.

[0097] Fig.18 It is a schematic diagram of the main structure of the rigid reaction frame of the present invention.

[0098] Fig.19 It is a bottom view structural schematic diagram of the rigid reaction frame of the present invention.

[0099] Fig. 20 It is a schematic diagram of the working structure of the hydraulic cutting roller of the present invention being located above the sample confining pressure applying mechanism.

[0100] Fig.21 for Fig. 20 A partial enlarged view of .

[0101] Fig. 22 The present invention is a schematic diagram of the working structure of the hydraulic cutting hob located at the lower end of the mounting platform on the upper part of the rigid force-bearing rod.

[0102] Fig.23 This is a schematic diagram of the working structure of the hydraulic cutting hob of the present invention located at the upper end of the sample.

[0103] Fig.24 It is a schematic diagram of the working structure of the hydraulic cutting roller rock breaking of the present invention.

[0104] Fig.25 This is a schematic diagram of the cutter head arrangement structure for the linear cutting test of the present invention.

[0105] Fig.26 It is a schematic diagram of the working structure of the cutting test without confining pressure of the present invention.

[0106] Fig. 27 The schematic diagram is a top view of the structure of the sample box of the present invention after the sample box connecting components are installed.

[0107] Fig.28 This is a schematic diagram of the front structure of the sample box of the present invention after the sample box connecting components are installed.

[0108] Fig.29 It is a partial front view and cross-sectional structural schematic diagram of a sample box connecting component of the sample box of the present invention after installation.

[0109] Fig.30 It is a partial cross-sectional structural schematic diagram of the confining pressure applying hydraulic propulsion device of the sample box of the present invention.

[0110] Fig.31 It is a schematic diagram of the front view structure of the sample box connecting component of the sample box of the present invention.

[0111] In the figure, 1-sample loading mechanism, 1.1-sample installation platform base, 1.2-sample installation platform, 1.21-rigid force rod installation threaded hole, 1.3-guide rail base, 1.4-hydraulic propulsion device guide rail, 1.5-sample installation position, 2-sample confining pressure application mechanism, 2.1-confining pressure application hydraulic propulsion device, 2.11-screw connection threaded drilling hole, 2.2-slider, 3-sample axial pressure application mechanism, 3.1-rigid lifting hydraulic cylinder, 3.2-upper oil inlet / return port, 3.3-lower oil inlet / return port, 3. 4-rigid force rod upper mounting platform, 3.5-rigid force rod, 3.51-rigid force rod upper mounting thread, 3.52-rigid force rod lower mounting thread, 3.6-rigid force rod upper mounting through hole, 3.7-rigid force rod upper mounting nut, 3.8-rigid hydraulic lifting cylinder upper oil chamber, 3.9-rigid hydraulic lifting cylinder lower oil chamber, 4-torque application mechanism, 4.1-torque application motor, 4.2-rigid rotating column, 4.3-rigid rotating seal test bench, 5-cutter working mechanism, 5.1-water force cutting hob, 5.11- tool body, 5.12- tool center axis, 5.13- tool reinforcement part, 5.14- high-pressure water injection hole, 5.15- middle connection device, 5.16- high-pressure water jet channel, 5.161- nozzle, 5.17- water flow control valve, 5.18- tool steering sensor, 5.19- sensor line channel, 5.110- sensor line, 5.2- joint rock breaking test bench cutter head, 5.3- water jet rotation adjustment part, 5.31- high-pressure water pipe docking interface, 5.311- high-pressure water Front end of the pipe docking interface, 5.312-rear end of the high-pressure water pipe docking interface, 5.32-water jet rotation adjustment part disc, 5.4-high-pressure water tank, 5.5-external high-pressure water inlet pipe, 6-rigid reaction frame, 6.1-rigid reaction frame platform, 6.11-torque application motor fixing hole, 6.2-support synchronous rotating table, 6.21-rigid rotating column through hole, 6.3-rigid reaction frame, 6.4-rigid reaction frame mounting base, 7-rock sample, 8-sample box connecting component, 8.1-screw connection threaded through hole. DETAILED DESCRIPTION

[0112] 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.

[0113] As can be seen from the attached drawings: the mechanical-hydraulic combined rock breaking comprehensive test bench comprises a sample loading mechanism 1, a sample confining pressure applying mechanism 2, a sample axial pressure applying mechanism 3, a torque applying mechanism 4, a cutterhead working mechanism 5, and a rigid reaction force frame 6;

[0114] The rigid reaction force frame 6 is arranged on the periphery of the sample loading mechanism 1, the sample confining pressure applying mechanism 2, the sample axial pressure applying mechanism 3, the torque applying mechanism 4 and the cutter disc working mechanism 5;

[0115] The sample loading mechanism 1 is located in the sample confining pressure applying mechanism 2; the rock sample is arranged in the sample loading mechanism;

[0116] The cutter disc working mechanism 5 is located above the sample confining pressure applying mechanism 2;

[0117] The upper end of the torque applying mechanism 4 is movably connected to the upper end of the rigid reaction force frame 6, and the lower end is connected to the cutter head working mechanism 5;

[0118] The sample axial pressure applying mechanism 3 is arranged on the torque applying mechanism 4 and is located above the cutter head working mechanism 5 (such as Figure 1 shown).

[0119] The cutterhead working mechanism 5 comprises a hydraulic cutting disc 5.1, a combined rock breaking test bench cutterhead 5.2 and a water jet rotation regulating unit 5.3; the hydraulic cutting disc 5.1 is circumferentially arranged on the combined rock breaking test bench cutterhead 5.2 (such as Figure 3 shown);

[0120] The hydraulic cutting roller 5.1 comprises a tool body 5.11, a tool center axis 5.12, a tool reinforcement part 5.13, a high-pressure water injection hole 5.14, a middle connecting device 5.15 and a high-pressure water jet channel 5.16;

[0121] The tool center axis 5.12 is located on the center line of the tool body 5.11 and is the bearing part of the tool body 5.11;

[0122] The tool reinforcement parts 5.13 are respectively located on both side surfaces of the tool body 5.11;

[0123] The high-pressure water injection hole 5.14 is located in the tool center axis 5.12 and runs through the tool body 5.11 transversely;

[0124] The middle connecting device 5.15 is located in the middle of the high-pressure water injection hole 5.14 and in the center of the tool body 5.11;

[0125] The high-pressure water jet channel 5.16 is arranged in the tool body 5.11 and is connected to the middle connecting device 5.15.

[0126] There are multiple high-pressure water jet channels 5.16; the high-pressure water jet channels 5.16 are arranged radially with the middle connecting device 5.15 as the center;

[0127] The high-pressure water jet channel 5.16 is provided with a nozzle 5.161; the nozzle 5.161 is communicated with the high-pressure water jet channel 5.16 and is provided on the outer periphery of the tool body 5.11;

[0128] The high-pressure water jet channel 5.16 is arranged on the longitudinal center plane of the tool body 5.11;

[0129] The high-pressure water jet channel 5.16 is provided with a water flow control valve 5.17; the water flow control valve 5.17 is located between the middle connecting device 5.15 and the nozzle 5.161.

[0130] A tool steering sensor 5.18 is provided on the side of the tool body 5.11;

[0131] A sensing circuit channel 5.19 is located in the tool body 5.11 and the tool reinforcement part 5.13, and between the water flow control valve 5.17 and the tool steering sensor 5.18;

[0132] The sensing circuit channel 5.19 is a hollow structure;

[0133] A sensing circuit 5.110 is arranged in the sensing circuit channel 5.19; the water flow control valve 5.17 is connected to the tool steering sensor 5.18 through the sensing circuit 5.110;

[0134] The tool body 5.11 is in the shape of a roller (such as Figure 2 shown).

[0135] The water jet rotating regulating part 5.3 comprises a high-pressure water pipe docking port 5.31 and a water jet rotating regulating part disc 5.32; the high-pressure water pipe docking port 5.31 is arranged on the water jet rotating regulating part disc 5.32; the water jet rotating regulating part disc is a hole-opening mechanism of the high-pressure water pipe docking port, and the water jet rotating regulating part disc can rotate synchronously with the test bench hob;

[0136] The water jet rotary adjustment disc 5.32 is fixedly connected to the combined rock breaking test bench cutter disc 5.2;

[0137] The high-pressure water pipe docking port 5.31 comprises a high-pressure water pipe docking port front end 5.311 and a high-pressure water pipe docking port rear end 5.312; the high-pressure water pipe docking port rear end 5.312 is connected to the high-pressure water tank 5.4 via an external high-pressure water inlet pipe 5.5; the high-pressure water pipe docking port rear end is used to connect to an external high-pressure water inlet pipe and is a fixing device;

[0138] The front end 5.311 of the high-pressure water pipe docking interface is connected to the high-pressure water injection hole 5.14;

[0139] The water jet rotation regulating part disc 5.32 is fixedly connected to the joint rock breaking test bench cutter head 5.2 and is fixedly connected to the lower end of the rigid rotating column 4.2; the front end 5.311 of the high-pressure water pipe docking interface rotates synchronously with the water jet rotation regulating part 5.3 and the joint rock breaking test bench cutter head 5.2 (such as Figure 1 , Figure 4 , Figure 5 When working, the external high-pressure water pipeline is docked with the rear end of the high-pressure water pipeline interface, and the high-pressure water jet channel 5.16 in the hydraulic cutting hob 5.1 is docked with the front end of the high-pressure water pipeline interface, which can ensure the synchronization of high-pressure water rotation and water inlet.

[0140] The water jet rotation adjustment part 5.3 is a connection structure for external high-pressure water and rock-breaking high-pressure water. The external high-pressure water is obtained by connecting a high-pressure water pipeline to a high-pressure water tank. The high-pressure water pipeline docking interface corresponds one-to-one with the position of the water jet (i.e., the hydraulic cutting disc 5.1) on the cutter head of the combined rock-breaking test bench.

[0141] The sample loading mechanism 1 comprises a sample mounting platform base 1.1, a sample mounting platform 1.2, a guide rail base 1.3, a hydraulic propulsion device guide rail 1.4, and a sample mounting position 1.5;

[0142] The sample mounting platform 1.2 is arranged on the sample mounting platform base 1.1; the four corners of the sample mounting platform 1.2 are provided with rigid force rod mounting threaded holes 1.21;

[0143] The guide rail base 1.3 is arranged around the sample installation platform base 1.1 and is located around the sample installation position 1.5;

[0144] The hydraulic propulsion device guide rail 1.4 is arranged on the guide rail base 1.3 and on the sample installation platform 1.2; one end of the hydraulic propulsion device guide rail 1.4 is smoothly connected with the sample installation platform 1.2 (such as Figure 6 , Figure 7 , Figure 8 As shown), the sample mounting platform 1.2 slides freely on the guide rail 1.4 of the hydraulic propulsion device to reduce sliding resistance.

[0145] The sample confining pressure applying mechanism 2 comprises a confining pressure applying hydraulic propulsion device 2.1 and a slider 2.2; the slider 2.2 is arranged at the lower end of the confining pressure applying hydraulic propulsion device 2.1;

[0146] There are four confining pressure applying hydraulic propulsion devices 2.1, and the four confining pressure applying hydraulic propulsion devices 2.1 are all slidably connected to the hydraulic propulsion device guide rail 1.4 through the slider 2.2;

[0147] When the four confining pressure applying hydraulic propulsion devices 2.1 are moved to the sample installation position 1.5, they are connected to form a four-sided closed structure, forming a confining pressure applying hydraulic propulsion device, which applies confining pressure (such as Figure 1 , Fig. 9 , Fig.10 , Fig.11 shown);

[0148] The sample axial pressure applying mechanism 3 comprises a rigid lifting hydraulic cylinder 3.1, an upper oil inlet / return port 3.2, a lower oil inlet / return port 3.3, a rigid force-bearing rod upper mounting platform 3.4, a rigid force-bearing rod 3.5, a rigid force-bearing rod upper mounting through hole 3.6, and a rigid force-bearing rod upper mounting nut 3.7;

[0149] The upper mounting platform 3.4 of the rigid stress-bearing rod is arranged opposite to the sample mounting platform 1.2; the sample mounting platform 1.2 is arranged parallel to and spaced from the upper mounting platform 3.4 of the rigid stress-bearing rod;

[0150] The rigid lifting hydraulic cylinder 3.1 and the rigid force-bearing rod upper mounting nut 3.7 are both located at the upper end of the rigid force-bearing rod upper mounting platform 3.4; the upper oil inlet / return port 3.2 and the lower oil inlet / return port 3.3 are arranged on the side of the rigid lifting hydraulic cylinder 3.1 from top to bottom at intervals;

[0151] The rigid force-bearing rod upper mounting through holes 3.6 are respectively arranged on the four corners of the rigid force-bearing rod upper mounting platform 3.4 and are located outside the rigid lifting hydraulic cylinder 3.1; the rigid force-bearing rod 3.5 has a rigid force-bearing rod upper mounting thread 3.51 connected to the rigid force-bearing rod upper mounting nut 3.7 at the upper end, and a rigid force-bearing rod lower mounting thread 3.52 matched with the rigid force-bearing rod mounting thread hole 1.21 at the lower end;

[0152] The lower end of the rigid stress-bearing rod 3.5 is connected to the rigid stress-bearing rod mounting threaded hole 1.21 by threading, and the upper end passes through the rigid stress-bearing rod upper mounting through hole 3.6 from bottom to top, and is fixed to the upper end of the rigid stress-bearing rod upper mounting platform 3.4 (such as Fig.12 , Fig.13 , Fig.14 , Fig.15 shown).

[0153] The torque applying mechanism 4 comprises a torque applying motor 4.1, a rigid rotating column 4.2, and a rigid rotating sealing test bench 4.3; the torque applying motor provides torque for the test bench cutter head to rotate and break rocks;

[0154] The rigid rotating column 4.2 and the rigid rotating seal test bench 4.3 are an integrated structure; the rigid rotating column and the rigid rotating seal test bench can transmit the torque applied by the torque application motor;

[0155] The rigid lifting hydraulic cylinder 3.1 is of hollow structure;

[0156] The upper end of the rigid rotating column 4.2 is connected to the torque applying motor 4.1, and the lower end vertically passes through the middle of the rigid lifting hydraulic cylinder 3.1 downward and is fixed on the cutter head 5.2 of the combined rock breaking test bench;

[0157] The rigid rotary seal test bench 4.3 is located in the rigid lifting hydraulic cylinder 3.1 of the axial pressure applying mechanism;

[0158] The internal space of the rigid lifting hydraulic cylinder 3.1 is divided into a rigid hydraulic lifting cylinder upper oil chamber 3.8 and a rigid hydraulic lifting cylinder lower oil chamber 3.9 by the rigid rotary seal test bench 4.3 and the rigid rotary column 4.2;

[0159] The upper oil inlet / return port 3.2 is arranged on the side end surface of the upper oil chamber 3.8 of the rigid hydraulic lifting cylinder and is connected to the upper oil chamber 3.8 of the rigid hydraulic lifting cylinder;

[0160] The lower oil inlet / return port 3.3 is arranged on the side end surface of the lower oil chamber 3.9 of the rigid hydraulic lifting cylinder and is connected to the lower oil chamber 3.9 of the rigid hydraulic lifting cylinder (such as Fig.14 , Fig.16 , Fig.17 , Fig.18 When working, the hydraulic station is used to supply oil from the upper oil inlet, and the oil is returned from the lower oil return port. The rigid rotating column is a fixed mechanism, the upper oil chamber of the rigid lifting hydraulic cylinder is filled with oil, and the entire axial pressure application mechanism runs downward. Similarly, the hydraulic station is used to supply oil from the lower oil inlet, and the oil is returned from the upper oil return port. The lower oil chamber of the rigid lifting hydraulic cylinder is filled with oil, and the entire axial pressure application mechanism runs upward.

[0161] The rigid reaction force frame 6 comprises a rigid reaction force frame platform 6.1, a supporting synchronous rotating platform 6.2 and a rigid reaction force frame 6.3; the rigid reaction force frame 6 provides a supporting reaction force for the test bench of the present invention, and the rigid reaction force frame 6 fixes the torque applying mechanism 4 through the rigid reaction force frame platform 6.1; the rigid reaction force frame 6 supports and connects the rigid rotating column 4.2 through the supporting synchronous rotating platform 6.2 on the rigid reaction force frame 6;

[0162] There are two rigid reaction frame platforms 6.1, and the two rigid reaction frame platforms 6.1 are spaced apart at the upper end of the rigid reaction frame 6.3;

[0163] The supporting synchronous rotating platform 6.2 is fixed on the rigid reaction frame 6.3 and is located below the rigid reaction frame platform 6.1;

[0164] The middle of the rigid reaction frame platform 6.1 is provided with a torque application motor fixing hole 6.11;

[0165] A rigid rotating column through hole 6.21 is provided in the middle of the supporting synchronous rotating platform 6.2; the torque applying motor fixing hole 6.11 is identical to the center line of the torque applying motor fixing hole 6.11; the torque applying motor 4.1 is fixed to the torque applying motor fixing hole 6.11; the rigid rotating column 4.2 is rotatably connected to the rigid rotating column through hole 6.21;

[0166] The rigid reaction frame 6.3 is fixed to the periphery of the sample mounting platform 1.2 (such as Figure 8 , Fig.18 , Fig.19 , Fig. 20 shown).

[0167] Referring to the attached drawings, it can be seen that the test method of the mechanical-hydraulic combined rock breaking comprehensive test bench of the present invention comprises the following steps:

[0168] Step 1: Sample loading

[0169] The rock sample 7 is loaded on the sample installation position 1.5 of the sample loading mechanism 1;

[0170] Connect the sample confining pressure applying mechanism 2 and the sample axial pressure applying mechanism 3 that have completed the sample loading through a rigid force-bearing rod 3.5;

[0171] Step 2: Axis pressure control

[0172] The hydraulic station is used to supply oil from the upper oil inlet / return port 3.2 and return oil from the lower oil inlet / return port 3.3. The rigid rotating column 4.2 is a fixed mechanism, and the upper oil chamber 3.8 of the rigid hydraulic lifting cylinder is filled with oil. The entire specimen axial pressure applying mechanism 3 runs upward;

[0173] Similarly, the hydraulic station is used to supply oil from the specimen axial pressure applying mechanism 3.3, the upper oil inlet / return port 3.2 returns oil, and the lower oil chamber 3.9 of the rigid hydraulic lifting cylinder is filled with oil, and the entire specimen axial pressure applying mechanism 3 moves downward;

[0174] At the starting position, the lower oil chamber is filled with oil, and the specimen mounting platform is located on the specimen mounting platform base;

[0175] Gradually, the hydraulic station is used to supply oil from the upper oil inlet / return port 3.2, and the lower oil inlet / return port 3.3 is used to return oil. The rigid rotating column 4.2 is a fixed mechanism, and the upper oil chamber 3.8 of the rigid hydraulic lifting cylinder is filled with oil. The entire specimen axial pressure applying mechanism 3 runs upward;

[0176] Until the hydraulic cutting roller 5.1 of the cutterhead working mechanism 5 contacts the upper surface of the rock sample 7, the oil chamber 3.8 at the upper part of the rigid hydraulic lifting cylinder continues to be filled with oil, and an axial pressure is applied to the rock sample 7;

[0177] When only axial pressure is applied to the rock specimen 7, a penetration test can be performed;

[0178] Continue to fill the upper oil chamber 3.8 of the rigid hydraulic lifting cylinder with oil, and the roller cutter breaks the rock;

[0179] Step 3: Torque Control

[0180] From the moment the hydraulic cutting disc 5.1 contacts the upper surface of the rock sample 7, while continuing to apply axial pressure, the torque applying mechanism 4 works; the torque applying motor 4.1 drives the rigid rotating column 4.2, thereby driving the cutter head 5.2 of the combined rock breaking test bench to rotate, achieving rotary cutting and rock breaking (such as Fig. 20 , Fig.21 , Fig. 22 , Fig.23 , Fig.24 shown).

[0181] The mechanical-hydraulic combined rock breaking comprehensive test bench of the present invention can also carry out tests including linear cutting tests and cutting tests without confining pressure;

[0182] 1) The linear cutting test includes the following steps:

[0183] Replace the layout of the cutter head 5.2 of the combined rock breaking test bench of the cutter head working mechanism 5 (such as Fig.25 As shown), only confining pressure and axial pressure are applied to the rock sample 7, and no torsional force is applied, so that a linear cutting test can be performed on the rock sample 7;

[0184] During operation, the lower oil chamber 3.9 of the rigid hydraulic lifting cylinder is filled with oil, and the sample installation platform 1.2 is located on the sample installation platform base 1.1; the rigid rotating column 4.2 is fixed, and the sample box is moved relative to the cutter head 5.2 of the combined rock breaking test bench on the guide rail 1.4 of the hydraulic propulsion device of the sample loading mechanism 1 to perform a linear cutting test;

[0185] Among them, the specimen box generates the reaction force when the specimen is subjected to confining pressure during the test;

[0186] When the sample confining pressure applying mechanism 2 applies confining pressure, the confining pressure applying hydraulic propulsion devices 2.1 in four directions are pushed from four sides to the sample installation position 1.5 through the hydraulic propulsion device guide rails 1.4, thereby enclosing the rock sample 7 in a cubic closed space;

[0187] The hydraulic propulsion device 2.1 for applying confining pressure in four directions stays at the sample installation position 1.5, and the hydraulic propulsion device 2.1 for applying confining pressure in four directions is connected by screws through four sample box connecting components 8;

[0188] The confining pressure applying hydraulic propulsion devices 2.1 in four directions and the four sample box connecting members 8 together constitute a sample box of the rock sample 7;

[0189] During the test operation, the sample box connecting member 8 is provided with a screw connecting threaded through hole 8.1 for connecting to the hydraulic propulsion device 2.1 for applying confining pressure; accordingly, a threaded drill hole 2.11 corresponding to the screw connecting threaded through hole 8.1 is also provided at a corresponding position of the hydraulic propulsion device 2.1 for applying confining pressure; the screw connects the sample box connecting member 8 and the hydraulic propulsion device 2.1 for applying confining pressure (such as Figure 27-Figure 31 shown);

[0190] On the sample installation platform 1.2, the sample box consisting of the confining pressure applying hydraulic propulsion device 2.1 and the sample box connecting member 8 is assembled; when applying confining pressure to the rock sample 7, the confining pressure applying hydraulic propulsion devices 2.1 in four directions provide reaction forces to each other to provide the rock sample 7 with a specified confining pressure (such as Fig.25 shown).

[0191] The working process of the mechanical-hydraulic combined rock breaking comprehensive test bench of the present invention may further include the following steps:

[0192] 2) The cutting test without confining pressure includes the following steps:

[0193] The actual test bench of the present invention can perform rotary cutting and linear cutting tests on rock samples 7 without confining pressure (such as Fig.26 shown).

[0194] Other parts not described belong to the prior art.

Claims

1. Mechanical-hydraulic combined rock breaking comprehensive test bench, characterized by: It comprises a sample loading mechanism (1), a sample confining pressure applying mechanism (2), a sample axial pressure applying mechanism (3), a torque applying mechanism (4), a cutter head working mechanism (5), and a rigid reaction force frame (6); The rigid reaction force frame (6) is arranged on the periphery of the sample loading mechanism (1), the sample confining pressure applying mechanism (2), the sample axial pressure applying mechanism (3), the torque applying mechanism (4) and the cutter head working mechanism (5); The sample loading mechanism (1) is located inside the sample confining pressure applying mechanism (2); The cutter disc working mechanism (5) is located above the sample confining pressure applying mechanism (2); The upper end of the torque applying mechanism (4) is movably connected to the upper end of the rigid reaction force frame (6), and the lower end is connected to the cutter head working mechanism (5); The sample axial pressure applying mechanism (3) is arranged on the torque applying mechanism (4) and is located above the cutter disc working mechanism (5); The cutterhead working mechanism (5) comprises a hydraulic cutting disc (5.1), a combined rock breaking test bench cutterhead (5.2) and a water jet rotation adjustment unit (5.3); the hydraulic cutting disc (5.1) is circumferentially arranged on the combined rock breaking test bench cutterhead (5.2); The hydraulic cutting roller (5.1) comprises a tool body (5.11), a tool center axis (5.12), a tool reinforcement part (5.13), a high-pressure water injection hole (5.14), a middle connecting device (5.15) and a high-pressure water jet channel (5.16); The tool center axis (5.12) is located on the center line of the tool body (5.11) and is the bearing part of the tool body (5.11); The tool reinforcement parts (5.13) are respectively located on both side surfaces of the tool body (5.11); The high-pressure water injection hole (5.14) is located in the tool center axis (5.12) and runs through the tool body (5.11) transversely; The middle connecting device (5.15) is located in the middle of the high-pressure water injection hole (5.14) and in the center of the tool body (5.11); The high-pressure water jet channel (5.16) is arranged in the tool body (5.11) and is connected to the middle connecting device (5.15); The water jet rotating regulating part (5.3) comprises a high-pressure water pipeline docking port (5.31) and a water jet rotating regulating part disc (5.32); the high-pressure water pipeline docking port (5.31) is arranged on the water jet rotating regulating part disc (5.32); The water jet rotary adjustment part disc (5.32) is fixedly connected to the combined rock breaking test bench cutter disc (5.2); The high-pressure water pipe docking interface (5.31) comprises a high-pressure water pipe docking interface front end (5.311) and a high-pressure water pipe docking interface rear end (5.312); the high-pressure water pipe docking interface rear end (5.312) is connected to the high-pressure water tank (5.4) via an external high-pressure water inlet pipe (5.5); The front end (5.311) of the high-pressure water pipeline docking interface is connected to the high-pressure water injection hole (5.14); The front end (5.311) of the high-pressure water pipe docking port rotates synchronously with the water jet rotation adjustment portion (5.3) and with the cutter head (5.2) of the combined rock breaking test bench.

2. The mechanical-hydraulic combined rock breaking comprehensive test bench according to claim 1 is characterized by: There are a plurality of high-pressure water jet channels (5.16); the high-pressure water jet channels (5.16) are arranged radially with the middle connecting device (5.15) as the center; The high-pressure water jet channel (5.16) is provided with a nozzle (5.161); the nozzle (5.161) is in communication with the high-pressure water jet channel (5.16); The high-pressure water jet channel (5.16) is provided with a water flow control valve (5.17); the water flow control valve (5.17) is located between the middle connecting device (5.15) and the nozzle (5.161); A tool steering sensor (5.18) is arranged on the side of the tool body (5.11); A sensing circuit channel (5.19) is located in the tool body (5.11) and the tool reinforcement part (5.13), and between the water flow control valve (5.17) and the tool steering sensor (5.18); The sensing circuit channel (5.19) is a hollow structure; A sensing circuit (5.110) is arranged in the sensing circuit channel (5.19); the water flow control valve (5.17) is connected to the tool steering sensor (5.18) via the sensing circuit (5.110); The tool body (5.11) is in the shape of a roller.

3. The mechanical-hydraulic combined rock breaking comprehensive test bench according to claim 1 is characterized by: The sample loading mechanism (1) comprises a sample mounting platform base (1.1), a sample mounting platform (1.2), a guide rail base (1.3), a hydraulic propulsion device guide rail (1.4), and a sample mounting position (1.5); The sample installation platform (1.2) is arranged on the sample installation platform base (1.1); rigid force rod installation threaded holes (1.21) are arranged on the four corners of the sample installation platform (1.2); The guide rail base (1.3) is arranged around the sample installation platform base (1.1) and is located around the sample installation position (1.5); The hydraulic propulsion device guide rail (1.4) is arranged on the guide rail base (1.3) and on the sample installation platform (1.2); one end of the hydraulic propulsion device guide rail (1.4) is smoothly butted against the sample installation platform (1.2).

4. The mechanical-hydraulic combined rock breaking comprehensive test bench according to claim 3 is characterized by: The specimen confining pressure applying mechanism (2) comprises a confining pressure applying hydraulic propulsion device (2.1) and a slider (2.2); the slider (2.2) is arranged at the lower end of the confining pressure applying hydraulic propulsion device (2.1); There are four confining pressure applying hydraulic propulsion devices (2.1), and the four confining pressure applying hydraulic propulsion devices (2.1) are all slidably connected to the hydraulic propulsion device guide rail (1.4) via the slider (2.2); When the four confining pressure applying hydraulic propulsion devices (2.1) are moved to the sample installation position (1.5), the connection forms a four-sided closed structure.

5. The mechanical-hydraulic combined rock breaking comprehensive test bench according to claim 4 is characterized by: The specimen axial pressure applying mechanism (3) comprises a rigid lifting hydraulic cylinder (3.1), an upper oil inlet / return port (3.2), a lower oil inlet / return port (3.3), an upper mounting platform (3.4) of a rigid force-bearing rod, a rigid force-bearing rod (3.5), an upper mounting through hole (3.6) of the rigid force-bearing rod, and an upper mounting nut (3.7) of the rigid force-bearing rod; The upper mounting platform (3.4) of the rigid force-bearing rod is spaced apart from the sample mounting platform (1.2); The rigid lifting hydraulic cylinder (3.1) and the rigid force-bearing rod upper mounting nut (3.7) are both located at the upper end of the rigid force-bearing rod upper mounting platform (3.4); the upper oil inlet / return port (3.2) and the lower oil inlet / return port (3.3) are arranged on the side of the rigid lifting hydraulic cylinder (3.1) at intervals from top to bottom; The rigid force-bearing rod upper mounting through holes (3.6) are respectively arranged on the four corners of the rigid force-bearing rod upper mounting platform (3.4) and are located outside the rigid lifting hydraulic cylinder (3.1); The lower end of the rigid stress-bearing rod (3.5) is threadedly connected to the rigid stress-bearing rod mounting threaded hole (1.21), and the upper end passes through the rigid stress-bearing rod upper mounting through hole (3.6) from bottom to top, and is fixed to the upper end of the rigid stress-bearing rod upper mounting platform (3.4) through the rigid stress-bearing rod upper mounting nut (3.7).

6. The mechanical-hydraulic combined rock breaking comprehensive test bench according to claim 5 is characterized by: The torque application mechanism (4) comprises a torque application motor (4.1), a rigid rotating column (4.2), and a rigid rotating sealing test bench (4.3); The rigid rotating column (4.2) and the rigid rotating sealing test bench (4.3) are an integrated structure; The rigid lifting hydraulic cylinder (3.1) is of a hollow structure; The upper end of the rigid rotating column (4.2) is connected to the torque application motor (4.1), and the lower end vertically passes through the middle of the rigid lifting hydraulic cylinder (3.1) and is fixed to the cutter head (5.2) of the combined rock breaking test bench; The rigid rotary seal test bench (4.3) is located in the rigid lifting hydraulic cylinder (3.1); The internal space of the rigid lifting hydraulic cylinder (3.1) is divided into an upper oil chamber (3.8) of the rigid hydraulic lifting cylinder and a lower oil chamber (3.9) of the rigid hydraulic lifting cylinder by the rigid rotary seal test bench (4.3) and the rigid rotary column (4.2); The upper oil inlet / return port (3.2) is arranged on the side end surface of the upper oil chamber (3.8) of the rigid hydraulic lifting cylinder and is connected to the upper oil chamber (3.8) of the rigid hydraulic lifting cylinder; The lower oil inlet / return port (3.3) is arranged on the side end surface of the lower oil chamber (3.9) of the rigid hydraulic lifting cylinder and is in communication with the lower oil chamber (3.9) of the rigid hydraulic lifting cylinder.

7. The mechanical-hydraulic combined rock breaking comprehensive test bench according to claim 6 is characterized by: The rigid reaction frame (6) comprises a rigid reaction frame platform (6.1), a supporting synchronous rotating platform (6.2), a rigid reaction frame (6.3), and a rigid reaction frame mounting base (6.4); There are two rigid reaction frame platforms (6.1), and the two rigid reaction frame platforms (6.1) are arranged at intervals on the upper end of the rigid reaction frame (6.3); The supporting synchronous rotating platform (6.2) is fixed on the rigid reaction frame (6.3) and is located below the rigid reaction frame platform (6.1); A torque application motor fixing hole (6.11) is provided in the middle of the rigid reaction force frame platform (6.1); A rigid rotating column through hole (6.21) is provided in the middle of the supporting synchronous rotating platform (6.2); the torque applying motor (4.1) is fixed on the torque applying motor fixing hole (6.11); the rigid rotating column (4.2) is rotationally connected to the rigid rotating column through hole (6.21); The rigid reaction frame (6.3) is fixed to the outer periphery of the sample mounting platform (1.2) via the rigid reaction frame mounting base (6.4).

8. The test method of the mechanical-hydraulic combined rock breaking comprehensive test bench according to any one of claims 1 to 7, characterized in that: The following steps are included: Step 1: Sample loading Installing the rock sample (7) at the installation position (1.5); The sample confining pressure applying mechanism (2) and the sample axial pressure applying mechanism (3) that have completed sample loading are connected via a rigid force-bearing rod (3.5); Step 2: Axis pressure control At the starting position, the lower oil chamber is filled with oil, and the specimen mounting platform is located on the specimen mounting platform base; Gradually, the hydraulic station is used to supply oil from the upper oil inlet / return port (3.2), and the lower oil inlet / return port (3.3) is used to return oil, and the upper oil chamber (3.8) of the rigid hydraulic lifting cylinder is filled with oil, and the entire specimen axial pressure applying mechanism (3) is operated upward; Until the hydraulic cutting disc (5.1) of the cutterhead working mechanism (5) contacts the upper surface of the rock sample (7), the oil chamber (3.8) at the upper part of the rigid hydraulic lifting cylinder is continuously filled with oil, and an axial pressure is applied to the rock sample (7); Continue to fill the upper oil chamber (3.8) of the rigid hydraulic lifting cylinder with oil, and the roller cutter breaks the rock; Step 3: Torque Control From the moment the hydraulic cutting disc (5.1) contacts the upper surface of the rock sample (7), while continuing to apply axial pressure, the torque applying mechanism (4) works; the torque applying motor (4.1) drives the rigid rotating column (4.2), thereby driving the cutter head (5.2) of the combined rock breaking test bench to rotate and break the rock.

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