Mobile rack porous water drill system and method for non-explosive excavation of tunnel face

Abstract

The invention discloses a movable type rack porous water milling drill system and a method for excavating a tunnel face in a non-explosion mode. The movable type rack porous water milling drill system comprises a rack, a water milling drill mechanism, a supporting mechanism and a walking mechanism; the water milling drilling mechanism is arranged at the arch frame mounting position and used for drilling the outer circumferential face of a tunnel, the supporting mechanism is arranged at the bottom of the rack and used for supporting the rack, and the walking mechanism is arranged at the bottom of the rack and used for moving the rack. The movable rack porous water milling drill system and the method for non-explosive excavation of the tunnel face have the advantages of being high in construction efficiency, smooth in excavation section and small in disturbance.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel excavation equipment, and in particular to a mobile stand multi-hole water-grinding drilling system and a method for excavating a tunnel face without blasting. Background Art

[0002] At present, the commonly used non-explosive excavation process is to use a breaker hammer excavator to directly excavate the face. The breaker hammer excavator is an independent large-scale mechanical equipment. On the basis of the traditional heavy-duty excavator, the bucket is replaced with a breaker hammer. It is a mature equipment on the market. In small tunnels, a single water-grinding drill is also used to drill holes in the face, and then the remaining face is split and slag is removed by a hydraulic splitter. Excavation with a breaker hammer excavator is noisy, dusty, and has low construction efficiency. The use of large-scale mechanical equipment will disturb the surrounding geology, and the tunnel excavation face will have problems such as over-excavation and under-excavation. The water-grinding drill is used to drill holes in the face, and then the hydraulic splitter is used to split the face. The rock mass and slag are manually removed, which has high labor intensity for workers and low construction efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a mobile gantry multi-hole water grinding drilling system, which has the advantages of high construction efficiency, flat excavation section and small disturbance.

[0004] According to the mobile stand multi-hole water-grinding drilling system of the embodiment of the present invention, the mobile stand multi-hole water-grinding drilling system includes a stand, a water-grinding drilling mechanism, a supporting mechanism and a walking mechanism. The stand is provided with an arch frame installation position, and a plurality of the water-grinding drilling mechanisms are arranged at the arch frame installation position for drilling holes on the outer circumferential surface of the tunnel. The supporting mechanism is arranged at the bottom of the stand to support the stand, and the walking mechanism is arranged at the bottom of the stand to move the stand.

[0005] The mobile stand multi-hole water-grinding drilling system according to the embodiment of the present invention has the advantages of high construction efficiency, smooth excavation section and small disturbance.

[0006] In some embodiments, the supporting mechanism includes a support shoe, a connecting block, an inner guide column, an outer guide column, a transverse cylinder and a telescopic cylinder. The output end of the transverse cylinder is pivotally connected to the support shoe, and the other end of the transverse cylinder is connected to the connecting block. The connecting block is located at the top of the support shoe and is slidably connected to the support shoe. The connecting block is connected to the inner guide column, at least part of the inner guide column enters into the outer guide column and is slidably connected to the outer guide column, and the two ends of the telescopic cylinder are respectively connected to the inner guide column and the outer guide column.

[0007] In some embodiments, a sliding block is provided on the side wall of the inner guide column, and a sliding groove is provided on the inner wall of the outer guide column, and the sliding block is slidably matched with the sliding groove.

[0008] In some embodiments, the walking mechanism includes a motor, a reduction box and walking wheels, the motor is drivingly connected to the reduction box, the reduction box is drivingly connected to the walking wheels, and the reduction box is connected to the bottom of the platform.

[0009] In some embodiments, the water-milling drill mechanism includes an annular track frame and multiple groups of water-milling drill actuators, the water-milling drill actuators are evenly distributed on the annular track frame, the annular track frame is located at the arch frame installation position and is connected to the platform, and the water-milling drill actuators are slidably connected to the annular track frame.

[0010] In some embodiments, the water-grinding drill actuator includes a drill barrel, a guide frame, a motor seat, a first motor and a second motor arranged on the motor seat, a first guide rail is provided on the guide frame, the motor seat is slidably connected to the first guide rail, the first motor is transmission-connected to the drill barrel, a gear is provided on the output end of the second motor, a rack is provided on the first guide rail, the gear is meshed with the rack, and the second motor is used to drive the motor seat to move relative to the guide frame along the first guide rail.

[0011] In some embodiments, a screw rod and upper and lower guide rails are provided on the guide frame, the end of the first guide rail is slidably connected to the upper and lower guide rails, the screw rod is pivotally connected to the guide frame, and the screw rod is threadedly connected to the first guide rail to drive the first guide rail to move relative to the guide frame along the second direction.

[0012] In some embodiments, wheel groups are provided at both ends of the guide frame, and the wheel groups are slidably matched with the slide rails of the annular track frame. A side shift structure is provided on the annular track frame, and the side shift structure includes a hand winch and a fixed frame. The fixed frame is fixedly connected to the annular track frame, and the fixed frame corresponds one-to-one to the water-grinding drill actuator. The hand winch is connected to the guide frame to drive the guide frame to move along a third direction.

[0013] According to the method for excavating a tunnel face without blasting according to an embodiment of the present invention, the method for excavating a tunnel face without blasting comprises the following steps:

[0014] An arch frame installation position is provided on the stand of the equipment, and a plurality of water-grinding drilling mechanisms are arranged at the arch frame installation position to drill holes on the outer circumference of the tunnel. A supporting mechanism is arranged at the bottom of the stand to support the stand, and a walking mechanism is arranged at the bottom of the stand to move the stand. The walking mechanism drives the stand to move to the face, and the supporting mechanism adjusts the stand posture so that the center of the stand is consistent with the center of the tunnel.

[0015] The water-grinding drilling mechanism includes a water-grinding drilling actuator arranged on the annular track frame of the platform. The positions of multiple water-grinding drilling actuators on the annular track frame are adjusted to drill holes on the outer circumferential surface of the tunnel. The drilling depth is 1m, and multiple holes form an open surface on the outer circumference of the tunnel.

[0016] The supporting mechanism lowers the height of the water-grinding drill actuator on the annular track frame, moves the frame away from the free surface of the tunnel periphery, and moves the breaker device to the free surface of the tunnel periphery for crushing, with a crushing distance of 1m;

[0017] The breaker device is moved away from the outer circumferential surface of the tunnel, and the platform is moved to the outer circumferential surface of the tunnel to complete an excavation operation. After repeating the excavation operation three times, the excavated tunnel is supported.

[0018] In some embodiments, after the breaker hammer device performs crushing, slag removal is performed by a loader and a dump truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of a mobile stand multi-hole water grinding drilling system according to an embodiment of the present invention.

[0020] Figure 2 Schematic diagram of the use status of the mobile stand multi-hole water grinding drilling system according to an embodiment of the present invention.

[0021] Figure 3 Schematic diagram of the structure of the water-grinding drill actuator of the mobile stand multi-hole water-grinding drill system according to an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the steps of adjusting the frame in the method for excavating a tunnel face without blasting according to an embodiment of the present invention.

[0023] Figure 5 Schematic diagram of the drilling steps of the water-grinding drill actuator according to the method for non-explosive excavation of the tunnel face in an embodiment of the present invention

[0024] Figure 6 Schematic diagram of the steps of crushing by a breaker hammer device according to the method of non-explosive excavation of the tunnel face in an embodiment of the present invention

[0025] Figure 7Schematic diagram of the steps of the mobile breaker device and the stand according to the method of non-explosive excavation of the tunnel face in accordance with an embodiment of the present invention

[0026] Figure numerals: 1. Stand; 2. Water-grinding drill actuator; 21. Drill barrel; 22. Guide frame; 23. Motor seat; 24. First motor; 25. Second motor; 26. First guide rail; 261. Rack; 27. Screw rod; 28. Upper and lower guide rails; 29. ​​Wheel set; 3. Support mechanism; 4. Travel mechanism; 5. Annular track frame. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] According to the mobile gantry multi-hole water-grinding drilling system of the embodiment of the present invention, the mobile gantry multi-hole water-grinding drilling system includes a gantry 1, a water-grinding drilling mechanism, a supporting mechanism 3 and a traveling mechanism 4. The gantry 1 is provided with an arch frame installation position, and multiple water-grinding drilling mechanisms are arranged at the arch frame installation position to drill holes on the outer circumference of the tunnel. The supporting mechanism 3 is arranged at the bottom of the gantry 1 to support the gantry 1, and the traveling mechanism 4 is arranged at the bottom of the gantry 1 to move the gantry 1. Multiple water-grinding drilling mechanisms integrated on the gantry 1 can fit the tunnel section contour line, and multiple holes are drilled and cored at the same time. Multiple holes are constructed at one time, which greatly improves the drilling efficiency, quickly forms an open surface, and improves the work efficiency of the subsequent breaker hammer excavator. Multiple water-grinding drilling mechanisms can be arranged along the excavation contour line on the gantry 1, and the excavated continuous channel will not have the problem of over-excavation or under-excavation. The excavation section is flat, which is convenient for the subsequent installation of steel arch frames and meshes.

[0029] The mobile stand multi-hole water-grinding drilling system according to the embodiment of the present invention has the advantages of high construction efficiency, smooth excavation section and small disturbance.

[0030] In some embodiments, the support mechanism 3 includes a support shoe, a connecting block, an inner guide column, an outer guide column, a transverse cylinder and a telescopic cylinder. The output end of the transverse cylinder is pivotally connected to the support shoe, and the other end of the transverse cylinder is connected to the connecting block. The connecting block is located at the top of the support shoe and is slidably connected to the support shoe. The connecting block is connected to the inner guide column, at least part of the inner guide column enters into the outer guide column and is slidably connected to the outer guide column, and the two ends of the telescopic cylinder are respectively connected to the inner guide column and the outer guide column.

[0031] Specifically, there can be four support mechanisms 3, which are arranged at the four corners of the platform 1, respectively, so as to realize the upward and downward extension and left and right lateral movement of the platform 1. The telescopic cylinder cooperates with the inner guide column and the outer guide column to realize the upward and downward extension of the platform 1, and the lateral movement cylinder, the support shoe and the connecting block cooperate to realize the left and right lateral movement of the platform 1, so as to realize the posture adjustment of the platform 1 in the tunnel. The support shoe is made of wear-resistant material to cope with the friction of complex ground. The connection method of the inner guide column and the outer guide column ensures the stability of the support. The wear-resistant support shoe improves the reliability of the support mechanism 3 under various ground conditions. The stable support ensures the stability of the platform 1 during the drilling process, reduces the working vibration and improves the drilling accuracy. The load-bearing capacity of the support mechanism 3 in the up and down direction can be 5t. When the support mechanism 3 moves left and right, considering the ground friction coefficient, the propulsion resistance of 6t should be met.

[0032] In some embodiments, a sliding block is provided on the side wall of the inner guide column, and a sliding groove is provided on the inner wall of the outer guide column, and the sliding block and the sliding groove are slidably matched.

[0033] Specifically, the inner guide column and the outer guide column are sleeved together, and the slider slides in the slide groove on the inner wall of the outer guide column to ensure the movement trajectory of the outer guide column when sliding relative to the inner guide column, avoid tilting of the outer guide column, and make the stand 1 rise and fall more smoothly.

[0034] In some embodiments, the walking mechanism 4 includes a motor, a reduction box and walking wheels. The motor is connected to the reduction box in a transmission manner, the reduction box is connected to the walking wheels in a transmission manner, and the reduction box is connected to the bottom of the stand 1.

[0035] Specifically, the reduction box can be a double-stage reduction box, the travel wheel can include a driving wheel and a driven wheel, the tire is a solid rubber wheel, and the reduction box and the driving wheel are connected through a double-row chain transmission. The travel mechanism 4 drives the tire to run through the motor to realize the movement of the platform 1 in the tunnel.

[0036] In some embodiments, the water-grinding drill mechanism includes an annular track frame and multiple groups of water-grinding drill actuators 2, the water-grinding drill actuators 2 are evenly distributed on the annular track frame, the annular track frame is located at the arch frame installation position and is connected to the stand 1, and the water-grinding drill actuators 2 are slidably connected to the annular track frame.

[0037] Specifically, the annular track frame is used to arrange the water-milling drill actuator 2, which is used to drill holes on the outer circumferential surface of the tunnel to form an outer peripheral free surface. The annular track frame is composed of two front and rear tracks to provide a stable support for the water-milling drill actuator 2 to drill holes. The annular track frame can be detachably connected in sections, which is convenient for replacement according to the cross-sectional size. The annular track frame is divided into 6 areas, and a water-milling drill actuator 2 is arranged in each area for drilling holes.

[0038] In some embodiments, the water-grinding drill actuator 2 includes a drill barrel 21, a guide frame 22, a motor seat 23, a first motor 24 and a second motor 25 arranged on the motor seat 23, a first guide rail 26 is arranged on the guide frame 22, the motor seat 23 is slidably connected to the first guide rail 26, the first motor 24 is transmission-connected to the drill barrel 21, a gear is arranged on the output end of the second motor 25, a rack 261 is arranged on the first guide rail 26, the gear is meshed with the rack 261, and the second motor 25 is used to drive the motor seat 23 to move along the first guide rail 26 relative to the guide frame 22.

[0039] Specifically, the first guide rail 26 on the guide frame 22 is used to guide the drill tube 21 to drill a hole in the tunnel, and the first motor 24 is used to drive the drill tube 21 to rotate. 8 or other numbers of diamond drill bits can be set on the drill tube 21, which are welded and fixed by a high-frequency welder. During the excavation process, the diamond drill bit is replaced every 2m of drilling to ensure the drilling efficiency. The rack 261 is meshed with the gear, and the second motor 25 drives the gear to rotate to drive the motor seat 23 to move relative to the rack 261, so that the drill tube 21 moves on the first guide rail 26, and the drilling operation of the water-grinding drill actuator 2 is realized. The first motor 24 can be a water-cooled motor, and the center of the drill tube 21 is flushed with water. The second motor 25 is driven by a reversible motor.

[0040] In some embodiments, a screw rod 27 and upper and lower guide rails 28 are provided on the guide frame 22, the end of the first guide rail 26 is slidably connected to the upper and lower guide rails 28, the screw rod 27 is pivotally connected to the guide frame 22, and the screw rod 27 is threadedly connected to the first guide rail 26 to drive the first guide rail 26 to move relative to the guide frame 22 along the second direction.

[0041] Specifically, the screw rod 27 and the upper and lower guide rails 28 cooperate to realize the movement of the first guide rail 26 away from and towards the annular track frame. The screw rod 27 is rotatably connected to the guide frame 22, and the screw rod 27 is threadedly connected to the first guide rail 26. Rotating the screw rod 27 can make the first guide rail 26 away from the guide frame 22 or approach the guide frame 22, so as to change and adjust the drilling position. The screw rods 27 can be arranged at both ends of the guide frame 22, so that the movement of the first guide rail 26 is more stable.

[0042] In some embodiments, wheel groups 29 are provided at both ends of the guide frame 22, and the wheel groups 29 are slidably matched with the slide rails of the annular track frame. A side shift structure is provided on the annular track frame, and the side shift structure includes a hand chain hoist and a fixed frame. The fixed frame is fixedly connected to the annular track frame, and the fixed frame corresponds one-to-one to the water-grinding drill actuator 2. The hand chain hoist is connected to the guide frame 22 to drive the guide frame 22 to move along the third direction.

[0043] Specifically, the wheel set 29 is arranged at the end of the guide frame 22 so that the guide frame 22 can slide along the annular track frame, realize the change of the position of the water-milling drill actuator 2 on the annular track frame, and realize the sequential operation of multiple drilling holes. The side shift structure is used to drive the water-milling drill actuator 2 to move on the annular track frame, and the hand chain hoist drives the water-milling drill actuator 2 to move a distance of the diameter of a drill hole at a time. After the wheel set 29 drives the guide frame 22 to move to the target position, the water-milling drill actuator 2 can be fixed to the annular track frame by bolts, and the third direction is the circumferential direction of the annular track frame. The hand chain hoist force point is set on the guide frame 22, and the hand chain hoist force point is specifically arranged on the first guide rail 26.

[0044] In some embodiments, a plurality of ladders and a plurality of walkways are provided on the platform 1 , and the ladders and the walkways are located on both sides of the platform 1 .

[0045] Specifically, the specifications of the platform 1 are 6725mm in width, 5060mm in height, and 5125mm in length. The internal clearance width of the platform 1 is 4400mm, the height is 5100mm, and the width of the arch installation area is 3m.

[0046] According to the method for excavating a tunnel face without blasting according to an embodiment of the present invention, the method for excavating a tunnel face without blasting comprises the following steps:

[0047] An arch frame installation position is provided on the stand of the equipment, and a plurality of water-grinding drilling mechanisms are arranged at the arch frame installation position to drill holes on the outer circumference of the tunnel. A supporting mechanism is arranged at the bottom of the stand to support the stand, and a walking mechanism is arranged at the bottom of the stand to move the stand. The walking mechanism drives the stand to move to the face, and the supporting mechanism adjusts the stand posture so that the center of the stand is consistent with the center of the tunnel.

[0048] The water-mill drilling mechanism includes a water-mill drilling actuator arranged on the annular track frame of the gantry. The positions of multiple water-mill drilling actuators on the annular track frame are adjusted to drill holes on the outer circumferential surface of the tunnel. The drilling depth is 1m, and multiple holes form the outer circumferential free surface of the tunnel. There can be 6 water-mill drilling actuators, the total number of holes to be drilled can be 160 holes, and the efficiency of digging a single hole is 5min / hole.

[0049] The supporting mechanism lowers the height of the water-grinding drill actuator on the annular track frame, moves the frame away from the free surface of the tunnel periphery, and moves the breaker device to the free surface of the tunnel periphery for crushing, with a crushing distance of 1m;

[0050] Move the hammer device away from the outer circumference of the tunnel, move the stand to the outer circumference of the tunnel to complete an excavation operation, and support the excavated tunnel after repeating the excavation operation three times. Each excavation operation is repeated in a cycle of moving the stand, adjusting the center position of the stand, drilling with the water-grinding drill actuator, the stand retreating and the hammer device moving forward to dig, the hammer device retreating and the stand moving forward. Multiple sets of water-grinding drills are on the stand, and the equipment has a high degree of automation. It can move forward, backward, and left and right independently. It can fit the cross-sectional contour according to the cross-sectional conditions, and drill multiple holes at the same time, which greatly improves the drilling efficiency and reduces the intensity of manual labor.

[0051] In some embodiments, after the breaker hammer device performs crushing, slag removal is performed by a loader and a dump truck.

[0052] Specifically, the use of loaders and dump trucks can improve the slag removal efficiency and further ensure the excavation speed.

[0053] Compared with conventional water-grinding drilling, the excavation footage of the mobile gantry multi-hole water-grinding drilling system can reach 0.8m, an increase of 60%. Taking 100 holes per cycle as an example, it takes 3h and 5h to complete each cycle in sandy mudstone and sandstone, respectively, saving 50% and 30% of the time, respectively.

[0054] The technical advantages of the method for non-explosive excavation of the tunnel face according to the embodiment of the present invention are the same as the technical advantages of the above-mentioned mobile stand multi-hole water grinding drilling system, which will not be repeated here.

[0055] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A mobile bench multi-hole water grinding drilling system, characterized in that: include: A stand, wherein an arch mounting position is provided on the stand; A water-milling drilling mechanism, wherein a plurality of the water-milling drilling mechanisms are arranged at the arch mounting position to drill holes on the outer circumference of the tunnel; A supporting mechanism, the supporting mechanism is arranged at the bottom of the platform to support the platform; A walking mechanism is arranged at the bottom of the platform to move the platform.

2. The mobile stand multi-hole water grinding drilling system according to claim 1 is characterized in that: The supporting mechanism includes a support shoe, a connecting block, an inner guide column, an outer guide column, a transverse cylinder and a telescopic cylinder. The output end of the transverse cylinder is pivotally connected to the support shoe, and the other end of the transverse cylinder is connected to the connecting block. The connecting block is located at the top of the support shoe and is slidably connected to the support shoe. The connecting block is connected to the inner guide column, at least part of the inner guide column enters into the outer guide column and is slidably connected to the outer guide column, and the two ends of the telescopic cylinder are respectively connected to the inner guide column and the outer guide column.

3. The mobile stand multi-hole water grinding drilling system according to claim 2 is characterized in that: A sliding block is arranged on the side wall of the inner guide column, and a sliding groove is arranged on the inner wall of the outer guide column, and the sliding block is slidably matched with the sliding groove.

4. The mobile stand multi-hole water grinding drilling system according to claim 1 is characterized in that: The walking mechanism comprises a motor, a reduction box and walking wheels. The motor is drivingly connected to the reduction box, the reduction box is drivingly connected to the walking wheels, and the reduction box is connected to the bottom of the platform.

5. The mobile stand multi-hole water grinding drilling system according to claim 1 is characterized in that: The water-milling drill mechanism comprises a water-milling drill actuator arranged on an annular track frame, the water-milling drill actuator is evenly distributed on the annular track frame, the annular track frame is located at the arch frame installation position and connected to the platform, and the water-milling drill actuator is slidably connected to the annular track frame.

6. The mobile stand multi-hole water grinding drilling system according to claim 5, characterized in that: The water-grinding drill actuator includes a drill barrel, a guide frame, a motor seat, a first motor and a second motor arranged on the motor seat, a first guide rail is arranged on the guide frame, the motor seat is slidably connected to the first guide rail, the first motor is transmission-connected to the drill barrel, a gear is arranged on the output end of the second motor, a rack is arranged on the first guide rail, the gear is meshed with the rack, and the second motor is used to drive the motor seat to move relative to the guide frame along the first guide rail.

7. The mobile stand multi-hole water grinding drilling system according to claim 6, characterized in that: A screw rod and upper and lower guide rails are arranged on the guide frame, the end of the first guide rail is slidably connected to the upper and lower guide rails, the screw rod is pivotally connected to the guide frame, and the screw rod is threadedly connected to the first guide rail to drive the first guide rail to move relative to the guide frame along the second direction.

8. The mobile stand multi-hole water grinding drilling system according to claim 6, characterized in that: Wheel sets are arranged at both ends of the guide frame, and the wheel sets are slidably matched with the slide rails of the annular track frame. A side shift structure is arranged on the annular track frame, and the side shift structure includes a hand chain hoist and a fixed frame. The fixed frame is fixedly connected to the annular track frame, and the fixed frame corresponds one-to-one with the water-grinding drill actuator. The hand chain hoist is connected to the guide frame to drive the guide frame to move along the third direction.

9. A method for excavating a tunnel face without blasting, characterized in that: The following steps are involved: An arch frame installation position is provided on the stand of the equipment, and a plurality of water-grinding drilling mechanisms are arranged at the arch frame installation position to drill holes on the outer circumference of the tunnel. A supporting mechanism is arranged at the bottom of the stand to support the stand, and a walking mechanism is arranged at the bottom of the stand to move the stand. The walking mechanism drives the stand to move to the face, and the supporting mechanism adjusts the stand posture so that the center of the stand is consistent with the center of the tunnel. The water-grinding drilling mechanism includes a water-grinding drilling actuator arranged on the annular track frame of the platform. The positions of multiple water-grinding drilling actuators on the annular track frame are adjusted to drill holes on the outer circumferential surface of the tunnel. The drilling depth is 1m, and multiple holes form an open surface on the outer circumference of the tunnel. The supporting mechanism lowers the height of the water-grinding drill actuator on the annular track frame, moves the frame away from the free surface of the tunnel periphery, and moves the breaker device to the free surface of the tunnel periphery for crushing, with a crushing distance of 1m; The breaker device is moved away from the outer circumferential surface of the tunnel, and the platform is moved to the outer circumferential surface of the tunnel to complete an excavation operation. After repeating the excavation operation three times, the excavated tunnel is supported.

10. The method for excavating a tunnel face without blasting according to claim 9, characterized in that: After the crushing hammer device is used for crushing, the slag is discharged by the loader and the dump truck.

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