CN117967340A - Water jet precutting free surface tunnel blasting control all-terrain equipment and construction method - Google Patents

Abstract

The invention relates to the technical field of blasting control, in particular to all-terrain equipment for blasting control of a water jet precut free surface tunnel and a construction method, wherein the all-terrain equipment comprises an all-terrain crawler belt, a power system, a trolley frame, a central controller, a cooling fan, an upper platform, a connecting pedestal, a folding mechanical arm, an information collecting device, a precut free surface rock breaking mechanism and a clamping device; the inside fixed connection of all-terrain track is in the both ends of platform truck frame, the bottom fixed connection of upper portion platform is in the top of platform truck frame. The invention has the advantages that the invention is efficient and environment-friendly, the folding telescopic arm can reach the area where the work is difficult to be carried out manually, the remote operation can be carried out, the two hollow cylinder annular protection brushes and the water flow of the water jet nozzle indirectly avoid the injury of diseases such as pneumoconiosis and the like caused by the influence of drilling dust on labor, the life health right of the labor is protected, and compared with the large-scale rock drilling trolley, the device has the advantages of simple structure and low manufacturing cost and construction cost.

Description

Water jet precutting free surface tunnel blasting control all-terrain equipment and construction method

Technical Field

The invention relates to the technical field of blasting control, in particular to water jet precutting free surface tunnel blasting control all-terrain equipment and a construction method.

Background

Common tunneling blasting methods comprise a full face tunneling blasting full face excavation method, a tunneling blasting step excavation method and a tunneling blasting subsection excavation method. In tunnel blasting, due to insufficient blasting scheme design or improper construction method, the problem of tunnel overexcavation is often caused, and extra economic loss is caused. Particularly, for the common fixed-point and fixed-area blasting operation in a tunnel, the overexcavation control becomes a difficult problem to be solved, so that the existing problems need to be solved through equipment development and technical innovation.

Disclosure of Invention

In order to control the overexcavation problem of fixed-point blasting operation, the invention provides all-terrain equipment for blasting control of a water jet precutting free surface tunnel and a construction method.

The invention provides all-terrain equipment for blasting control of a water jet precut free surface tunnel and a construction method thereof, which adopts the following technical scheme:

The water jet precut free surface tunnel blasting control all-terrain equipment comprises an all-terrain crawler belt, a power system, a trolley frame, a central controller, a cooling fan, an upper platform, a connecting pedestal, a folding mechanical arm, an information collecting device, a precut free surface rock breaking mechanism and a clamping device; the inside of the all-terrain crawler belt is fixedly connected with two ends of the trolley frame, the bottom of the upper platform is fixedly connected with the top of the trolley frame, one side of the power system and one side of the cooling fan are fixedly connected with the inside of the trolley frame, the top of the upper platform is fixedly connected with one side of the connecting pedestal, one end of the folding mechanical arm is rotatably connected with the inside of the connecting pedestal, and the other end of the folding mechanical arm is fixedly connected with the bottom of the clamping device; the all-terrain crawler belt, the power system, the cooling fan, the folding mechanical arm, the information collecting device, the precut free surface rock breaking mechanism and the clamping device are all in communication connection with the central controller.

Through adopting above-mentioned technical scheme, central controller receives external command through wireless, wired mode and to the driving system that the platform truck was equipped, platform truck frame, central controller, cooling fan, folding arm, information collecting device, cut free surface broken rock mechanism in advance and add and hold the device, workman's operation outside remote control operation ware control central controller 4 and then control cut free surface broken rock mechanism in advance and realize blasting, compare with large-scale rock drill platform truck, this equipment simple structure, cut free surface broken rock mechanism overall dimension in advance is less, need not have to carry out the inclined drilling because of receiving the influence of tunnel face rear support steel bow member, thereby avoid leading to the problem of overdrawing easily.

Preferably, the precut free surface rock breaking mechanism comprises a fixed support, a target distance adjusting screw, a water-abrasive mixing device, a water-abrasive channel, a buffering energy dissipation adjusting mechanism support, a water jet spraying device and a buffering energy dissipation adjusting support device, wherein one side of the fixed support is fixedly connected to one side of the holding device, one end of the target distance adjusting screw is fixedly connected to one end of the water jet spraying device, one end of the water-abrasive channel is fixedly connected to the inside of the water-abrasive mixing device, and the water jet spraying device is inserted into the buffering energy dissipation adjusting mechanism support; the bottom of the buffering energy dissipation adjusting mechanism support is fixedly connected to the top of the buffering energy dissipation adjusting support device, and the bottom of the water-abrasive mixing device is fixedly connected to the top of the buffering energy dissipation adjusting mechanism support; one side of the fixed support is fixedly connected with a motor, the tail end of an output shaft of the motor is in transmission connection with one end of a target distance adjusting screw, and the outer surface of the target distance adjusting screw is in threaded connection with the inside of the water-abrasive material mixing device.

By adopting the technical scheme, the water-abrasive mixing device can be used for mixing various abrasives, so that the water jet spraying device can spray different abrasive blasting precut free surfaces, and the buffering energy dissipation adjusting and supporting device is adapted to different operation environment floors.

Preferably, the water jet spraying device is located in the buffering energy dissipation adjustment supporting device, the water jet spraying device comprises a protecting device support, a metal net-shaped hollow cylinder protecting cover, two hollow cylinder annular protecting brushes and a water jet nozzle, the inside of the water jet nozzle is communicated with the inside of the water-abrasive material mixing device, the tops of the two hollow cylinder annular protecting brushes are fixedly connected to the outer surface of the protecting device support, the two hollow cylinder annular protecting brushes are symmetrically distributed on two sides of the water jet nozzle, one end of the metal net-shaped hollow cylinder protecting cover is in threaded connection with the inside of the protecting device support, and the water jet nozzle is located in the inside of the metal net-shaped hollow cylinder protecting cover.

Through adopting above-mentioned technical scheme, the rotation of target pitch adjusting screw drives two hollow drum annular protection brushes, water jet nozzle and rotates together, and water jet nozzle spun rivers not only have impulsive force still have rotatory kinetic energy under the rotation state, and the cutting is cut out in advance the free surface that can be fine, can not splash into the sewage rubble of reflection in the protection of metal netted hollow drum safety cover protection water jet nozzle, forms the air barrier when two hollow drum annular protection brushes rotate simultaneously, avoids sewage backward flow, protection water jet nozzle simultaneously.

Preferably, the buffering energy dissipation adjustment supporting device comprises a sliding column and a hollow column, wherein a spring is fixedly connected to the inside of the sliding column, one end of the spring is fixedly connected to the top of the inner wall of the hollow column, and the outer surface of the sliding column is slidably connected to the inside of the hollow column.

Through adopting above-mentioned technical scheme, through embedded spring, adjust the gliding distance between different slip post of buffering and the hollow post, and then make and equip the rugged ground that does benefit to the operational environment steady.

Preferably, the information collecting device comprises a laser positioning device, a video shooting device and a scanning device, and the motor, the laser positioning device, the video shooting device and the scanning device are all in communication connection with the central controller.

By adopting the technical scheme, visual selection is conveniently carried out on an external remote control operator by workers, and further the central controller gives instructions to control the operation of the folding mechanical arm and other mechanisms.

The blasting construction method of the water jet precutting free-face tunnel comprises the following operation steps: step A, detecting and positioning an operation environment in a tunnel; and B, driving the trolley frame to move to a fixed-point blasting position by the all-terrain crawler belt to perform blasting.

By adopting the technical scheme, the working environment of the site to be blasted is detected through the laser positioning, video shooting and scanning device, so that the real-time acquisition of the blasting condition of workers is facilitated.

Preferably, in the step B, the specific construction steps of blasting include: b1, controlling the folding mechanical arm to rotate and stretch up and down, front and back, left and right relative to the connecting pedestal by the central controller until the precut free surface rock breaking mechanism is positioned at a proper position; and B2, controlling a motor to drive the target distance adjusting screw to rotate by the central controller until the water jet nozzle is parked to a proper height at the blasting position.

Through adopting above-mentioned technical scheme, the position of folding arm large scale coarse adjustment water jet nozzle of central controller control, the distance of central controller control motor small scale accurate adjustment water jet nozzle to boring the detonation point department of detonation hole is favorable to equipping and carries out more accurate brill and explodes the blasting, avoids the problem of overdriving to appear.

Preferably, in the step B, the specific construction step of blasting further includes: and operating the water jet nozzle, and performing water jet cutting at the detonation point of the drilling and blasting hole at the blasting position to form a precut free surface, wherein the precut free surface comprises a precut hole type free surface and a precut groove type free surface.

By adopting the technical scheme, the free surface form is simply established to the precutting groove type free surface, need not the water jet nozzle and removes, can realize the large depth hole cutting, precutting groove type free surface space is continuous, and conduction stress wave blocks the effect better, selects suitable precutting free surface according to the blasting demand, is applicable to multiple blasting demand.

In summary, the invention has the following beneficial technical effects:

1. Compared with a traditional hand-held rock drilling machine, the device is efficient and environment-friendly, the folding type telescopic arm can reach an area where manual work is difficult to operate, remote operation can be performed, the damage of diseases such as pneumoconiosis and the like caused by the influence of drilling dust on labor is indirectly avoided by water flow of the two hollow cylinder annular protective brushes and the water jet nozzles, the life health weight of the labor is protected, compared with a large-scale rock drilling trolley, the device is simple in structure, low in manufacturing cost and construction cost, meanwhile, the whole size of a precut free surface rock breaking mechanism is smaller, the overlong size of the large-scale rock drilling trolley drilling machine mechanism can be avoided, and the problem that the overdrawing is easily caused because the steel arch frame is supported behind the face is needed to perform inclined drilling when peripheral eye operation is performed;

2. The invention can perform local fixed point or distributed area blasting, and when the local fixed point or distributed area blasting is performed in a tunnel, the pre-cut hole type free surface or the pre-cut groove type free surface can be used as an explosion stress wave conduction boundary of an intermediate drilling and explosion hole initiation point to inhibit overexcitation caused by drilling and explosion hole initiation; after the precut free surface is formed, the stress structure of the complete rock mass is destroyed, a tensile stress concentration area is formed near the free surface when the rock mass is exploded and broken, the tensile strength of the rock material is far lower than the compressive strength, and the initiation efficiency of the rock is further promoted; the rock surface of the inner wall of the free surface is rich in moisture, so that dust dispersion caused by detonation can be effectively inhibited, and good environmental benefits are achieved;

3. the invention can be applied to projects such as roadbed and pavement cutting which are not suitable for blasting and noise construction methods in urban updating engineering, and utilizes the advantage of relatively 'quiet' of water jet drilling cutting to assist the environmental protection sustainable development of urban updating projects.

Drawings

Fig. 1 is a schematic view of the construction of the blasting control equipment of the present invention.

FIG. 2 is a schematic structural view of a pre-cut free-face rock breaking mechanism of the present invention;

FIG. 3 is a schematic view of the structure of the water jet spraying device of the present invention;

FIG. 4 is a schematic view of a precut hole type free surface during operation of the precut free surface breaking mechanism of the present invention;

FIG. 5 is a schematic illustration of a precutting slot type free surface during operation of the precutting free surface breaking mechanism of the present invention;

fig. 6 is a schematic illustration of the pre-cut freedom of the present invention as an auxiliary operation for the propagation boundary of the explosion stress wave.

Reference numerals illustrate:

1. all-terrain caterpillar tracks; 2. a power system; 3. a trolley frame; 4. a central controller; 5. a cooling fan; 6. an upper platform; 7. a connecting pedestal; 8. a folding mechanical arm; 9. an information collection device;

10. A precutting free surface rock breaking mechanism; 101. a fixed support; 102. a target distance adjusting screw; 103. a water-abrasive mixing device; 104. a water-abrasive channel; 105. a buffering energy dissipation adjusting mechanism bracket; 106. buffering energy dissipation adjusting and supporting device;

11. a holding device; 12. a water jet spraying device; 121. a protective device holder; 122. a metal mesh hollow cylinder protective cover; 123. a hollow cylinder ring-shaped protection brush; 124. a water jet nozzle;

13. Drilling a detonation hole detonation point; 14. precutting the hole-type free surface; 15. pre-grooved free surface; 16. blasting the crushing area; 17. precut the free surface boundary.

Detailed Description

The invention is described in further detail below with reference to fig. 1-6.

The embodiment of the invention discloses all-terrain equipment for blasting control of a water jet precut free surface tunnel, which is disclosed by the invention, referring to figures 1 and 2, and comprises all-terrain tracks 1, a power system 2, a trolley frame 3, a central controller 4, a cooling fan 5, an upper platform 6, a connecting pedestal 7, a folding mechanical arm 8, an information collecting device 9, a precut free surface rock breaking mechanism 10 and a holding device 11, wherein the trolley equipment provided with the all-terrain tracks 1 is suitable for road surfaces with complicated tunneling working surfaces, muddy surfaces, broken stones and the like, has strong obstacle crossing and climbing capabilities, the all-terrain tracks 1 are connected through a trolley frame 3, the bottom of the trolley frame 3 is provided with an environment-friendly power system 2, provides power for the whole-vehicle equipment through an electric trolley set, and provides required electricity consumption energy for other mechanisms; the inside of the all-terrain crawler belt 1 is fixedly connected with two ends of the trolley frame 3, the bottom of the upper platform 6 is fixedly connected with the top of the trolley frame 3, one side of the power system 2 and one side of the cooling fan 5 are fixedly connected with the inside of the trolley frame 3, the top of the upper platform 6 is fixedly connected with one side of the connecting pedestal 7, one end of the folding mechanical arm 8 is rotationally connected with the inside of the connecting pedestal 7, the other end of the folding mechanical arm 8 is fixedly connected with the bottom of the clamping device 11, the clamping device 11 is connected with the folding mechanical arm 8, a precutting free surface rock breaking mechanism 10 for fixing water jet directional drilling and cutting is rigidly connected with the connecting pedestal 7, the folding mechanical arm 8 capable of stretching and rotating is arranged on the connecting pedestal 7, and the folding mechanical arm 8 is spherically hinged with the connecting pedestal 7, so that the folding mechanical arm 8 can be fixed in direction, and can also perform up-down front-back-left-right rotation operation relative to the connecting pedestal 7, and the degree of freedom is extremely high; all-terrain crawler 1, driving system 2, cooling fan 5, folding arm 8, information collection device 9, precut free surface broken rock mechanism 10 and add holding device 11 all with central controller 4 communication connection, central controller 4 is the intelligent central of whole platform truck equipment, can receive external command through wireless, wired mode and send the operation command to other mechanisms of platform truck equipment (all-terrain crawler 1, driving system 2, platform truck frame 3, central controller 4, cooling fan 5, upper portion platform 6, connect pedestal 7, folding arm 8, information collection device 9, precut free surface broken rock mechanism 10 and add holding device 11), cooling fan 5 is central controller's cooling mechanism, simultaneously play in the tunnel dust fall operation, central controller 4 is arranged in the relative enclosure space between upper portion platform 6 and the platform truck frame 3, have the ability of antidetonation, anti-jolt, central controller 4 communication connection has external remote control ware, during the workman's operation equipment carries out the blasting, can control central controller 4 through external remote control ware, and then control each electrical mechanism and the electrical components of equipment.

Referring to fig. 1 and 2, the pre-cutting free surface rock breaking mechanism 10 includes a fixed support 101, a target distance adjusting screw 102, a water-abrasive mixing device 103, a water-abrasive channel 104, a buffering energy dissipation adjusting mechanism support 105, a water jet spraying device 12 and a buffering energy dissipation adjusting support 106, wherein the water-abrasive mixing device 103 is a mixing cavity of water jet and different abrasives, the mixing cavity can support mixing of pure water jet, water jet-garnet abrasive, water jet-ice particle abrasive, slurry jet and other different abrasives, one side of the fixed support 101 is fixedly connected to one side of the adding and holding device 11, one end of the target distance adjusting screw 102 is fixedly connected to one end of the water jet spraying device 12, one end of the water-abrasive channel 104 is fixedly connected to the inside of the water-abrasive mixing device 103, the water-abrasive channel 104 is connected with an external water pump and a grinding stock bin, the grinding stock bin and the water pump can be arranged behind the trolley frame 3 and a small trailer or in a region where the upper platform 6 does not obstruct the folding mechanical arm 8, and the water jet spraying device 12 is inserted into the inside of the buffering energy dissipation adjusting mechanism support 105.

Referring to fig. 1 and 2, the bottom of the buffering energy dissipation adjustment mechanism support 105 is fixedly connected to the top of the buffering energy dissipation adjustment support device 106, the bottom of the water-abrasive material mixing device 103 is fixedly connected to the top of the buffering energy dissipation adjustment mechanism support 105, the buffering energy dissipation adjustment mechanism support 105 is installed below the water-abrasive material mixing device 103, the buffering energy dissipation adjustment support device 106 is arranged at the lower part of the buffering energy dissipation adjustment mechanism support 105, the buffering energy dissipation adjustment support device 106 can adapt to the uneven face of the directional drilling explosion hole initiation point 13, the telescopic lengths of the different buffering energy dissipation adjustment support devices 106 are adjusted through embedded springs, it is ensured that the water jet nozzles 124 can maintain fixed water jet target distance cutting on the uneven face, and the buffering energy dissipation adjustment support device 106 is convenient for the fluctuation degree of the rock face in the pre-cutting free face rock breaking mechanism 10 self-adapting.

Referring to fig. 2 and 3, a motor is fixedly connected to one side of the fixed support 101, the tail end of the output shaft of the motor is in transmission connection with one end of the target distance adjusting screw 102, the outer surface of the target distance adjusting screw 102 is in threaded connection with the inside of the water-abrasive mixing device 103, the motor adopts a motor with servo control (known technology), the motor can drive the target distance adjusting screw 102 to adjust the target distance of the lower water jet nozzle 124 from the rock at the hole drilling and blasting initiation point 13, the servo control motor adopts the conventional servo motor which is common in the market, and the visual control can be performed on an external remote control operator, and a command is transmitted through the central controller 4.

Referring to fig. 2 and 3, the water jet spraying device 12 is located in the buffering and energy dissipation adjustment supporting device 106, the water jet spraying device 12 comprises a protecting device bracket 121, a metal net-shaped hollow cylinder protecting cover 122, two hollow cylinder annular protecting brushes 123 and a water jet nozzle 124, the water jet nozzle 124 is cylindrical, can spray downward jet flow in the upper water-abrasive material mixing device 103 and can also be used for drilling or cutting in rock materials, the metal net-shaped hollow cylinder protecting cover 122 is a metal net which is full of dense holes, can intercept splashed rock blocks caused by water jet flushing cutting, is used for protecting the water jet nozzle 124, the inner part of the water jet nozzle 124 is communicated with the inner part of the water-abrasive material mixing device 103, the tops of the two hollow cylinder annular protecting brushes 123 are fixedly connected to the outer surface of the protecting device bracket 121, the hollow cylindrical ring-shaped protection brushes 123 are arranged on the outer side of the protection device support 121, the hollow cylindrical ring-shaped protection brushes 123 are composed of a plurality of hollow cylindrical ring-shaped brushes with brush heads and are used for preventing sludge chips outside from entering a pre-cut free surface formed by jet drilling due to sewage backflow when water jet cutting, when the water jet spraying device 12 rotates, the hollow cylindrical ring-shaped protection brushes 123 rotate along with the hollow cylindrical ring-shaped protection brushes to form a barrier, the two hollow cylindrical ring-shaped protection brushes 123 are symmetrically distributed on two sides of the water jet nozzle 124, one end of the metal mesh hollow cylinder protection cover 122 is in threaded connection with the inside of the protection device support 121, the water jet nozzle 124 is positioned in the metal mesh hollow cylinder protection cover 122, the protection device support 121 is sleeved on the outer side of a circular tube of the water jet nozzle 124, a metal mesh hollow cylinder protective cover 122 and a hollow cylinder annular protective brush 123 for connecting the water jet nozzle 124.

Referring to fig. 3, the buffering and energy dissipation adjustment supporting device 106 includes a sliding column and a hollow column, a spring is fixedly connected to the inside of the sliding column, one end of the spring is fixedly connected to the top of the inner wall of the hollow column, the outer surface of the sliding column is slidably connected to the inside of the hollow column, the embedded spring adjusts the telescopic length of different buffering and energy dissipation adjustment supporting devices 106, and it is ensured that the water jet nozzle can maintain fixed water jet target distance cutting on an uneven tunnel face.

Referring to fig. 1, the information collecting device 9 includes a laser positioning device, a video camera and a scanning device, where the motor, the laser positioning device, the video camera and the scanning device are all in communication connection with the central controller 4, and the laser positioning device, the video camera and the scanning device are "eyes" equipped for the whole trolley, can adapt to the working environment with dim light, more dust and heavier mist in the tunnel, can scan and position the blasting position in the tunnel, and read coordinates, and can make workers visually select on an external remote control operator after feeding information back to the central processor, and further give instructions to control the operation of the folding mechanical arm 8 and other mechanisms through the central controller.

The embodiment of the invention also discloses a water jet precutting free-face tunnel blasting construction method, which comprises the following operation steps with reference to figures 1 and 6: step A, detecting and positioning an operation environment in a tunnel; and B, the all-terrain crawler belt 1 drives the trolley frame 3 to move to a fixed-point blasting position for blasting, after blasting is carried out at the blasting point 13 of the hole drilling and blasting, the blasting breaking area 16 is arranged in the precutting free surface boundary 17, the blasting stress wave is conducted to the inner part and the periphery of the rock body, and the stress wave conducted to the periphery is stopped when reaching the precutting free surface boundary 17, so that the blasting operation energy is accumulated to the deep part of the rock body, and a better blasting and breaking effect is formed.

Referring to fig. 1, 4,5, 6, in step B, specific construction steps for performing blasting include: b1, the central controller 4 controls the folding mechanical arm 8 to rotate and extend up and down, front and back, left and right relative to the connecting pedestal 7 until the precut free surface rock breaking mechanism 10 is positioned at a proper position, the folding mechanical arm 8 delivers the precut free surface rock breaking mechanism 10 to a proper position under the operation of the central controller 4, and then the operation is carried out on the drilling and blasting initiation point 13; b2, the central controller 4 controls the motor to drive the target distance adjusting screw 102 to rotate, so that the water jet nozzle 124 moves towards a direction close to or far away from the detonation point 13 of the drilling and blasting hole until the water jet nozzle 124 is parked to a proper height at the blasting position.

Referring to fig. 1,2, 4, 5, 6, in step B, the specific construction steps of performing blasting further include: the water jet nozzle 124 is operated, water jet cutting is carried out at the detonation point 13 of the drilling and blasting hole at the blasting position, annular precut free surfaces are formed at the periphery of the detonation point 13 of the drilling and blasting hole, each precut free surface comprises a precut hole type free surface 14 and a precut groove type free surface 15, when local fixed-point or distributed area blasting is carried out in a tunnel, the precut hole type free surface 14 or the precut groove type free surface 15 can be used as an explosion stress wave conduction boundary of the detonation point 13 of the middle drilling and blasting hole, overexplosion caused by the detonation of the drilling and blasting hole is restrained, after the precut free surfaces are formed, the stress structure of the complete rock body is destroyed, a tensile stress concentration zone is formed near the free surfaces when the rock body is blasted and broken, the tensile strength of rock materials is far lower than the compressive strength, the blasting efficiency of the rock is further promoted, dust dispersion caused by the water jet cutting can be effectively restrained, and the blasting efficiency of the inner wall of the rock surfaces is high in water jet cutting, and good environmental benefit is achieved.

The above embodiments are not intended to limit the scope of the present invention, so: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.

Claims (10)

1. All-terrain equipment for blasting control of water jet precutting free surface tunnel, and is characterized in that: the full-terrain crawler belt comprises a full-terrain crawler belt (1), a power system (2), a trolley frame (3), a central controller (4), a cooling fan (5), an upper platform (6), a connecting pedestal (7), a folding mechanical arm (8), an information collecting device (9), a precutting free surface rock breaking mechanism (10) and a clamping device (11);

The full-terrain crawler belt (1) is characterized in that the inside of the full-terrain crawler belt (1) is fixedly connected to two ends of a trolley frame (3), the bottom of an upper platform (6) is fixedly connected to the top of the trolley frame (3), one side of a power system (2) and one side of a cooling fan (5) are fixedly connected to the inside of the trolley frame (3), the top of the upper platform (6) is fixedly connected to one side of a connecting pedestal (7), one end of a folding mechanical arm (8) is rotatably connected to the inside of the connecting pedestal (7), and the other end of the folding mechanical arm (8) is fixedly connected to the bottom of a clamping device (11);

All-terrain crawler belt (1), power system (2), cooling fan (5), folding arm (8), information collecting device (9), precut free surface broken rock mechanism (10) and add and hold device (11) all with central controller (4) communication connection.

2. The water jet precut free-face tunnel blasting control all-terrain apparatus of claim 1, wherein: the pre-cutting free surface rock breaking mechanism (10) comprises a fixed support (101), a target distance adjusting screw (102), a water-abrasive material mixing device (103), a water-abrasive material channel (104), a buffering energy dissipation adjusting mechanism support (105), a water jet spraying device (12) and a buffering energy dissipation adjusting support device (106), one side of the fixed support (101) is fixedly connected to one side of a holding device (11), one end of the target distance adjusting screw (102) is fixedly connected to one end of the water jet spraying device (12), one end of the water-abrasive material channel (104) is fixedly connected to the inside of the water-abrasive material mixing device (103), and the water jet spraying device (12) is inserted into the inside of the buffering energy dissipation adjusting mechanism support (105).

3. The water jet precut free-face tunnel blasting control all-terrain apparatus of claim 2, wherein: the bottom of the buffering energy dissipation adjusting mechanism support (105) is fixedly connected to the top of the buffering energy dissipation adjusting support device (106), and the bottom of the water-abrasive mixing device (103) is fixedly connected to the top of the buffering energy dissipation adjusting mechanism support (105).

4. A water jet precut free-face tunnel blasting control all-terrain apparatus as claimed in claim 3 wherein: one side of the fixed support (101) is fixedly connected with a motor, the tail end of an output shaft of the motor is in transmission connection with one end of a target distance adjusting screw (102), and the outer surface of the target distance adjusting screw (102) is in threaded connection with the inside of the water-abrasive material mixing device (103).

5. The water jet precut free-face tunnel blasting control all-terrain apparatus of claim 4 wherein: the water jet spraying device (12) is located in the buffering energy dissipation adjustment supporting device (106), the water jet spraying device (12) comprises a protecting device support (121), a metal net-shaped hollow cylinder protecting cover (122), two hollow cylinder annular protecting brushes (123) and a water jet nozzle (124), the inside of the water jet nozzle (124) is communicated with the inside of the water-abrasive material mixing device (103), the tops of the two hollow cylinder annular protecting brushes (123) are fixedly connected to the outer surface of the protecting device support (121), the two hollow cylinder annular protecting brushes (123) are symmetrically distributed on the two sides of the water jet nozzle (124), one end of the metal net-shaped hollow cylinder protecting cover (122) is in threaded connection with the inside of the protecting device support (121), and the water jet nozzle (124) is located in the inside of the metal net-shaped hollow cylinder protecting cover (122).

6. The water jet precut free-face tunnel blasting control all-terrain apparatus of claim 5 wherein: the buffering energy dissipation adjustment support device (106) comprises a sliding column and a hollow column, wherein a spring is fixedly connected to the inside of the sliding column, one end of the spring is fixedly connected to the top of the inner wall of the hollow column, and the outer surface of the sliding column is slidably connected to the inside of the hollow column.

7. The water jet precut free-face tunnel blasting control all-terrain apparatus of claim 6 wherein: the information collecting device (9) comprises a laser positioning device, a video shooting device and a scanning device, and the motor, the laser positioning device, the video shooting device and the scanning device are all in communication connection with the central controller (4).

8. The water jet precutting free-face tunnel blasting construction method is characterized by utilizing the water jet precutting free-face tunnel blasting control all-terrain equipment according to any one of claims 1-7 to carry out construction, and comprises the following operation steps:

step A, detecting and positioning an operation environment in a tunnel;

and B, driving the trolley frame (3) to move to a fixed-point blasting position by the all-terrain crawler belt (1) to perform blasting.

9. The water jet precut free-face tunnel blasting construction method as claimed in claim 8, wherein in the step B, the specific construction step of blasting comprises:

b1, a central controller (4) controls a folding mechanical arm (8) to perform up-down, front-back, left-right rotation and expansion operation relative to a connecting pedestal (7) until a precut free surface rock breaking mechanism (10) is positioned at a proper position;

And B2, the central controller (4) controls the motor to drive the target distance adjusting screw (102) to rotate until the water jet nozzle (124) is parked to a proper height at the blasting position.

10. The water jet precut free-face tunnel blasting construction method as claimed in claim 9, wherein in the step B, the specific construction step of blasting further comprises:

And operating a water jet nozzle (124), and performing water jet cutting at a detonation point (13) of a drilling and blasting hole at the blasting position to form a precut free surface, wherein the precut free surface comprises a precut hole type free surface (14) and a precut groove type free surface (15).