Parallel operation construction method and special equipment for coal mine tunnel excavation

Abstract

The invention discloses a parallel operation construction method for coal mine tunnel excavation and special equipment thereof, including drilling and blasting, slag removal and transportation and roof support processes, wherein a rake loader is used for slag removal, and is characterized in that: a suspension vehicle is used in the parallel operation construction; the suspension vehicle is composed of a power compartment, an operating compartment, a hanging device, a telescopic structure, a cantilever workbench, a rock drill support structure and a rail-type hydraulic rock drill; the power compartment and the operating compartment are hung on the hanging rail through a hanging load-bearing device, and the height of the power compartment and the operating compartment from the ground should meet the height required for the head-on slag removal work of excavation; because the drilling vehicle is suspended from the ground for operation, the slag removal work is not affected during drilling and charging and temporary support, and the two main excavation processes can be operated in parallel, thereby nearly doubling the operation efficiency.

Description

Technical Field

[0001] The invention belongs to coal mine tunnel excavation technology. Background Art

[0002] Coal mines include drilling, blasting, slag removal, and support processes. Currently, the most advanced drilling equipment is a fully hydraulic tunnel excavation drill. Since the fully hydraulic tunnel excavation drill is a ground walking type that arranges hydraulic power, hydraulic system operating mechanism, drill arm mechanism, and rail-type rock drill on a crawler or tire-type walking chassis. At present, 80% of construction units use rake loaders (rake bucket loaders) for slag removal operations. Rake loaders use winches to pull rake buckets to rake rocks and load them into mine cars. When removing slag, the rake bucket needs to be hung on the head with a return pulley to remove the slag from the bottom plate. Therefore, when the drill rig occupies the bottom plate and drills the hole head-on, the rake loader cannot be used to remove slag, and drilling and slag removal cannot be performed in parallel; drilling and charging and slag removal are the two processes that take up the longest time in excavation work, and the step-by-step operation of the two seriously affects the excavation speed. At present, roof support also needs to be carried out standing on the head-on slag pile, and roof support cannot be carried out in parallel with slag removal and drilling, which also seriously affects the excavation speed. Moreover, during the operation, the drilling vehicle needs to enter and exit the narrow tunnel space and needs to avoid various other equipment, which makes it very inconvenient to move in and out. Therefore, it is necessary to break through the traditional concept of ground operation and create a new excavation equipment that is suspended from the ground to expand the three-dimensional working space and realize the parallel operation of drilling, slag removal and roof support.

[0003] The technology related to the invention also involves monorail crane technology; a monorail crane is a transportation system that uses a special I-beam suspended above the lane as a track (hanging track), hangs a carrier vehicle through a suspension load-bearing device to form a vehicle group, and is towed by a traction device to run along the track. The traction power can be provided by a steel wire rope, a diesel engine, a battery or a pneumatic device. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention proposes a tunneling construction method for parallel operations of drilling, slag removal and roof support; at the same time, a special parallel operation construction equipment used in this method is proposed, which is a suspended hydraulic drilling vehicle that can be suspended from the ground to expand the three-dimensional working space, achieve the purpose of parallel operation construction, and realize rapid tunneling of coal mine tunnels.

[0005] The present invention adopts the following technical scheme: a parallel operation construction method for tunnel excavation in a coal mine, including drilling and blasting, slag removal and transportation, and roof support procedures, wherein a rake loader is used for slag removal, and the method is characterized in that a suspended hydraulic drilling vehicle, hereinafter referred to as a suspended vehicle, is used in the parallel operation construction; the suspended vehicle is suspended on a roof hanging rail at a certain height from the ground and moves on the hanging rail by traction; workers perform drilling and blasting and roof support operations on the suspended vehicle, and use a rake loader to perform slag removal operations simultaneously under the suspended vehicle;

[0006] The suspension vehicle is composed of a power compartment and a hydraulic pump and its accessories in the compartment, an operating compartment and a hydraulic system operating mechanism in the compartment, a suspension load-bearing device, a telescopic structure, a cantilever workbench, a rock drill support structure and a rail-type hydraulic rock drill; the rail-type hydraulic rock drill is installed on the rock drill support structure, and the rock drill support structure can drive the rail-type hydraulic rock drill to move up and down, left and right and flip to achieve drilling positioning; the front end of the cantilever workbench is installed at the bottom of the rock drill support structure, and the rock drill support structure is installed on the telescopic structure, and the telescopic structure is connected to the power compartment and the operating compartment; when the telescopic structure is in a backward retracted state, it drives the cantilever workbench to retreat and hide at the bottom of the power compartment and the operating compartment; when the telescopic structure is extended forward, the cantilever workbench is pulled out from the bottom of the compartment for the staff to temporarily support and charge the line on the platform;

[0007] The steps of using the above-mentioned suspension vehicle for parallel operation construction are as follows:

[0008] Step 1: Work preparation

[0009] First, use the existing excavation technology to pre-dig a starting tunnel of more than 20 meters, and carry out roof support; install a hanging rail on the top of the tunnel and reach the head; then arrange the traction equipment and suspension car on the hanging rail;

[0010] Step 2: Work begins. The traction suspension vehicle is driven to a position suitable for drilling. The operating valve of the telescopic structure is operated to make it press against the top and bottom plates of the tunnel. The operating valve of the rock drill support structure is operated to align the hole position according to the blasthole layout diagram, and the rock drill is started to drill holes.

[0011] Step 3: After drilling, the rock drill support structure and the rail-type hydraulic rock drill are folded, the traction suspension vehicle moves forward, the cantilever workbench is brought close to the working surface, the upper blasthole is charged and connected on the cantilever workbench, and the lower blasthole is charged and connected under the cantilever workbench. After all blastholes are charged and connected, the cantilever workbench is folded, the traction suspension vehicle is withdrawn to a safe distance, and blasting is carried out;

[0012] Step 4: After the blasting smoke has dissipated, push the hanging rail forward to the new front after blasting, and pull the hanging car into the empty roof area near the blasting. Drill anchor holes into the roof according to the drilling operation method, from back to front, drilling in the front, and installing anchors on the cantilever workbench at the same time to support the roof;

[0013] While doing the above work, a rake loader is arranged at the front, and traditional slag removal work is carried out under the suspension car. If there is too much piled up gangue at the front, which affects the drilling of the upper hole by the rock drill, it should be removed first;

[0014] Step 5: After the roof support is completed, the traction suspension vehicle is retreated to a position where the rock drill can be deployed, and the next cycle of drilling is carried out; while drilling the upper blasthole, the lower part can continue to remove the slag, and the two can be carried out simultaneously; if the slag removal is completed, the rake loader is removed and the lower blasthole is continued;

[0015] Step six: After all blast holes are drilled, return to step three to load charges, connect lines and blast; from then on, enter the regular work cycle until the entire tunnel excavation is completed.

[0016] The specific structure of the parallel operation construction special equipment provided by the present invention is:

[0017] A suspended hydraulic drilling vehicle, which is composed of a power compartment, an operating compartment, a hanging device, a telescopic frame, a cantilever workbench, a rock drill support frame and a rail-type hydraulic rock drill;

[0018] A hydraulic pump is arranged in the power compartment, and a hydraulic system operating valve is arranged in the operating compartment; the hanging device is installed on the top of the power compartment and the operating compartment, and the power compartment and the operating compartment are hung on the hanging rail through the hanging device. The height of the power compartment and the operating compartment from the ground should meet the height required for the excavation head-on slag removal work;

[0019] The telescopic structure is provided with telescopic sleeves extending forward on both sides of the power compartment and the operating compartment, respectively. The telescopic sleeves are composed of an inner tube, an outer tube and an internal hydraulic telescopic cylinder. The outer tube is fixed to the boxes on both sides of the power compartment and the operating compartment. The front ends of the two inner tubes are respectively connected to bidirectional telescopic hydraulic struts. The upper and lower parts of the two hydraulic strut cylinder bodies are respectively connected to each other through crossbeams to form a frame.

[0020] The rock drill support structure includes a drill arm and a guide rail mounting frame; the drill arm is a hydraulic telescopic drill arm, and two drill arms are provided, and the two drill arms are respectively mounted on the above-mentioned hydraulic pillars through a movable connection structure; in order to make the rock drill support structure swing up and down and left and right to realize the full-section drilling positioning of the rock drill, the movable connection structure of the drill arm and the hydraulic pillar is: a spiral swing oil cylinder is installed at the lower part of the hydraulic pillar cylinder body, and a lifting and telescopic cylinder is installed at the upper end of the spiral swing oil cylinder. A spherical hinge support is provided at the top of the lifting and telescopic cylinder. The spherical hinge support is hinged to the hydraulic inclined tie rod, and the bottom end of the drill arm outer tube is hinged to the spiral swing oil cylinder, and the upper end of the drill arm outer tube is hinged to the hydraulic inclined tie rod, thereby forming a triangular support form, and the hydraulic pillar is used as a support to realize the up and down and left and right swings; the above-mentioned guide rail mounting frame is used to install the guide rail hydraulic rock drill, and is installed on the top of the drill arm through the longitudinal rotating cylinder and the transverse rotating cylinder to realize the left and right swing and up and down flipping of the guide rail hydraulic rock drill;

[0021] The front end of the cantilever workbench is connected to the lower part of the two hydraulic support cylinders. When the telescopic structure is retracted, the cantilever workbench is driven to retreat and hide at the bottom of the power compartment and the operating compartment. When the telescopic structure is extended forward, the rock drill support structure extends forward and the cantilever workbench is pulled out from the bottom of the compartment, so that the staff can temporarily support and charge the line on the platform.

[0022] It also includes a guard plate hydraulic cylinder provided above the front of the operating compartment, on which a temporary support plate is installed for temporarily protecting the safety of the workers on the platform;

[0023] Furthermore, the hydraulic system operating valve adopts a manual and electric dual-purpose electromagnetic hydraulic valve to achieve long-distance remote control operation.

[0024] Furthermore, in order to increase the safe activity area for the staff, the cantilever workbench can be extended to both sides; the structure is that two flat plates are laid on the cantilever workbench surface, and a two-way telescopic cylinder extending to both sides is provided at the bottom. The two flat plates are respectively fixed on the two-way telescopic cylinder heads, and when the two-way telescopic cylinder is extended, the two flat plates are respectively extended to both sides.

[0025] Furthermore, the power compartment and the operating compartment are open, that is, the compartment is a shed-type compartment which at least includes a shed perimeter frame, a shed roof and a bottom plate, the shed roof serves as a safety protection, and the bottom plate is used for arranging equipment.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] As the drilling rig is suspended from the ground, there is a rake loader height under the drilling rig, which does not affect the slag transportation on the ground. The top plate can also be supported on the drilling rig, and the slag removal work is not affected during drilling, charging and temporary support. The two main excavation processes can be carried out in parallel, increasing the working efficiency by nearly one-fold. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural perspective view of an embodiment of a suspension vehicle of the present invention;

[0029] Figure 2 A front view of an embodiment of the suspension vehicle of the present invention;

[0030] Figure 3 A top view of an embodiment of the suspension vehicle of the present invention;

[0031] Figure 4 It is a right side view of a universal embodiment of the suspension vehicle of the present invention;

[0032] Figure 5 This is a front cross-sectional view of the drill arm in the embodiment,

[0033] Figure 6 It is a schematic diagram of the upper eye drilling and slag removal parallel operations in the cantilever workbench unfolded state of the present invention;

[0034] Figure 7 It is a schematic diagram of the present invention when drilling the lower eye when the cantilever workbench is in an unfolded state;

[0035] Figure 8 It is a schematic diagram of the parallel operation of temporary support on the cantilever workbench or drilling anchor holes on the top plate or charging and connecting lines and slag removal in the present invention;

[0036] Fig. 9 It is a schematic diagram of the upper eye drilling and slag removal parallel operation in the cantilever type workbench folded state of the present invention;

[0037] Fig.10 It is a schematic diagram of the stowed state of the suspension vehicle of the present invention.

[0038] Legend: 1-lifting rail, 2-power compartment, 3-operating compartment, 4-telescopic sleeve, 5-cantilever workbench, 6-hydraulic support, 7-drill arm, 8-rock drill, 9-hydraulic pump, 10-suspension load-bearing device, 11-plate, 12-crossbeam, 13-hydraulic system operating valve, 14-temporary support, 15-support hydraulic cylinder, 16-spiral swing cylinder, 17-spherical hinge support, 18-hydraulic inclined rod, 19-lifting and telescopic cylinder, 20-guide rail mounting frame, 21-longitudinal rotation cylinder, 22-lateral rotation cylinder, 23-outer tube, 24-inner tube, 25-one-way telescopic cylinder, 26-two-way telescopic cylinder. DETAILED DESCRIPTION

[0039] A parallel operation construction method for tunnel excavation in a coal mine includes drilling and blasting, slag removal and transportation, and roof support processes, wherein a rake loader is used for slag removal, and a special device is used in the parallel operation construction. The device is as follows Figure 1The suspended hydraulic drilling vehicle on display, hereinafter referred to as the suspended vehicle, is suspended on the roof rail at a certain height from the ground and moves on the rail by traction; the staff performs drilling and blasting and roof support operations on the suspended vehicle, and a rake loader is arranged under the suspended vehicle to remove slag at the same time;

[0040] The specific structure of the suspension vehicle is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, it can be seen that the suspension vehicle is composed of a power compartment 2, an operating compartment 3, a telescopic structure 4, a cantilever workbench 5, a rock drill support structure (including a hydraulic support 6, a drill arm 7 and a guide rail mounting frame 20 and a guide rail hydraulic rock drill 8.

[0041] A hydraulic pump 9 is arranged in the power compartment 2, and a hydraulic system operating valve 13 is provided in the operating compartment 3. The power compartment 2 and the operating compartment 3 are required to be connected as a whole front to back, and a suspension load-bearing device 10 matching the hanging rail 1 is installed on the top of the power compartment 2 and the operating compartment 3; the height of the power compartment 2 and the operating compartment 3 from the ground should meet the height required for head-on slag removal work during excavation.

[0042] The telescopic structure is provided with a telescopic sleeve 4 on both sides of the power compartment 2 and the operating compartment 3. The telescopic sleeve 4 is composed of an outer tube 23, an inner tube 24 and a one-way telescopic cylinder 25. The one-way telescopic cylinder 25 is arranged inside the outer tube. The one-way telescopic cylinder 25 makes the inner tube 24 telescope in the outer tube 23. The specific structure can be referred to in the attached Figure 5 The front cross-sectional view of the drill arm shows that they have the same structure; the outer tube 23 is fixed on the two side boxes of the power compartment 2 and the operating compartment 3, and the forward extension length of the one-way telescopic cylinder 25 in the outer tube 23 is required to be less than the length of the inner tube 24 to ensure that the inner tube 24 does not slip out of the outer tube 23 when moving forward; the front ends of the two inner tubes 24 are respectively connected to bidirectional telescopic hydraulic struts 6, and the upper parts of the cylinder bodies of the two hydraulic struts 6 are connected to each other through a crossbeam 12; the hydraulic struts 6 are required to reach the top plate of the tunnel and the bottom plate of the tunnel when extended in both directions.

[0043] The rock drill support structure includes a drill arm 7 and a guide rail mounting frame 20; the drill arm 7 is a hydraulic telescopic drill arm, and its structure is as follows: Figure 5 As shown, it is composed of an outer tube 23, an inner tube 24 and a one-way telescopic cylinder 25. The outer tube 23 is installed on the spiral swing cylinder 16, and the above-mentioned guide rail mounting frame 20 is arranged on the top of the inner tube 24. The hydraulic support 6 is supported and fixed on the top plate and the bottom plate as the support point of the drill arm 7; the drill arm is installed on the above-mentioned hydraulic support 6, and is supported by the hydraulic support 6 to achieve up and down and left and right swing; the above-mentioned guide rail type hydraulic rock drill 8 is installed on the guide rail mounting frame 20, and can be swung left and right and turned up and down; in order to make the rock drill support frame swing up and down and left and right, the full-section drilling positioning of the rock drill is realized.

[0044] Reference Figure 1-4 Further explanation of the connection structure between the drill arm 7 and the hydraulic support 6: a spiral swing cylinder 16 is installed at the lower part of the cylinder body of the hydraulic support 6, a lifting and telescopic cylinder 19 is installed at the upper end of the spiral swing cylinder 16, a spherical hinge support 17 is provided at the top of the lifting and telescopic cylinder 19, the spherical hinge support 17 is hinged to the hydraulic inclined tie rod 18, the bottom end of the outer tube of the drill arm 7 is hinged to the spiral swing cylinder 16, and the upper end of the outer tube of the drill arm is hinged to the hydraulic inclined tie rod 17, thereby forming a triangular support form; the hydraulic oil pipes of the above-mentioned spiral swing cylinder 16, lifting and telescopic cylinder 17 and hydraulic inclined tie rod 18 are connected to the corresponding operating valve of the hydraulic system operating valve 13; during operation, the stretching of the lifting and telescopic cylinder 19 and the hydraulic inclined tie rod 18 makes the drill arm 7 pitch up and down at any angle, and the spiral swing cylinder 16 makes the drill arm swing left and right at any angle. The guide rail mounting frame 20 is provided with a longitudinal rotating cylinder 21 and a transverse rotating cylinder 22. By adjusting the angle and position of the rotating frame, the guide rail hydraulic rock drill can be rotated left and right and turned up and down, thereby controlling the drilling positioning of the rock drill and realizing full-section blastholes. Section blastholes.

[0045] The front end of the cantilever work platform 5 is connected to the lower part of the cylinder body of the two hydraulic pillars 6. When the one-way telescopic cylinder 25 is in the retracted state, the two hydraulic pillars 6 retreat to the front of the operating compartment 3, and the cantilever work platform 5 retreats to the bottom of the power compartment 2 and the operating compartment 3. When the one-way telescopic cylinder 25 is extended, it pushes the hydraulic pillars 6 forward to the head of the excavation, and drives the cantilever work platform 5 to extend forward from the bottom of the power compartment 2 and the operating compartment 3 as a working movable platform.

[0046] The hydraulic system operating valve 13 includes the hydraulic operating valves of all suspension vehicles, such as the telescopic frame cylinder operating valve, the hydraulic support operating valve, the drill arm operating valve and the rock drill operating valve. The above-mentioned operating valves are connected to their respective working parts through hydraulic oil pipes, and the hydraulic system operating valve 13 and the above-mentioned hydraulic pump 9 are connected by inlet and return hydraulic oil pipes. In addition to manual operation, the hydraulic system operating valve can also use a manual and electric dual-purpose electromagnetic hydraulic valve to achieve remote control operation.

[0047] from Figure 1 , Figure 2 , Figure 3 It can be seen that a temporary support 14 is provided at the upper front part of the operating compartment 3. The temporary support 14 is installed at the front end of the top of the operating compartment 3 through a supporting hydraulic cylinder 15. When the hydraulic cylinder 15 is extended, the temporary support 14 supports the top plate above the cantilever workbench 5 to protect the safety of the workers on the cantilever workbench 5.

[0048] from Figure 1 , Figure 2 , Figure 3 and Figure 4It can be seen that the cantilever workbench 5 can be extended to both sides to increase the safe activity area of ​​the staff; the structure is that two flat plates 11 are laid on the surface of the cantilever workbench 5, and a two-way telescopic cylinder 26 extending to both sides is provided at the bottom. The two flat plates 11 are respectively fixed on the piston rod heads on both sides of the two-way telescopic cylinder 26. When the two-way telescopic cylinder 26 is extended, the two flat plates are respectively extended to both sides.

[0049] Furthermore, the power compartment 2 and the operating compartment 3 are open, that is, the compartment is a shed-type compartment which at least includes a shed perimeter frame, a shed roof and a floor, the shed roof is used as a safety protection, and the floor is used for arranging equipment.

[0050] Reference Figure 6-10 The steps of using the above-mentioned suspension vehicle for parallel operation construction are as follows:

[0051] Step 1: Work preparation

[0052] First, a tunnel of more than 20 meters is excavated using existing excavation technology. Figure 8 As shown, a hanging rail 1 (I-beam rail) is installed on the top plate of the pre-excavated tunnel in the prior art. The hanging rail is long enough to reach the head, and the hanging rail 1 is temporarily in a non-fastened state; a traction device (not shown) and the above-mentioned suspension car are arranged on the hanging rail 1, so that the suspension car is temporarily in a retracted state (the retracted state is shown in FIG. Fig.10 ),stand-by;

[0053] Step 2: Work begins. The traction suspension vehicle is driven to a position suitable for drilling. The operating valve of the telescopic structure is operated to make it press against the top and bottom plates of the tunnel. The operating valve of the rock drill support structure is operated to determine the hole position according to the blasthole layout diagram. The rock drill 6 is started to drill. The upper hole is drilled with reference to Figure 6 , Fig. 9 , hit the lower eye reference Figure 7 ;

[0054] Step 3: After drilling, the rock drill support structure and the rail-type hydraulic rock drill 6 are retracted, the traction suspension vehicle moves forward, the cantilever workbench 5 is brought close to the working surface, the upper blasthole charging line is connected on the cantilever workbench 5, and the lower blasthole charging line is connected under the cantilever workbench 5 (refer to Figure 8 ), after all the blastholes are charged and connected, the cantilever workbench 5 is folded up, the suspension vehicle is pulled back to a safe distance, and blasting is carried out;

[0055] Step 4: After the blasting smoke has dissipated, push the hanging rail 1 forward to the new front after blasting, and pull the hanging car into the empty roof area near the blasting. Drill anchor holes according to the above drilling operation method. After the anchor holes are drilled, put away the guide rail hydraulic rock drill 8, unfold the cantilever workbench 5, and install anchors and other traditional roof support work on the cantilever workbench 5 (refer to Figure 8 );

[0056] While doing the above work, a rake loader is arranged at the front, and traditional slag removal work is carried out under the suspension car. If there is too much piled up gangue at the front, which affects the drilling of the upper hole by the rock drill, it should be removed first;

[0057] Step 5: After the roof support is completed, the traction suspension vehicle is moved back to a position where the rock drill can start drilling, and the next cycle of drilling is carried out; while the upper blasthole is being drilled, the lower part can continue to be slag removed, and both are carried out at the same time, refer to Figure 6 , Fig. 9 ; If the slag removal is completed, remove the rake loader and continue drilling the lower blastholes, refer to Figure 7 ;

[0058] Step six: After all blast holes are drilled, return to step three to load charges, connect lines and blast; thus entering the regular work cycle until the entire tunnel excavation is completed.

Claims

1. A parallel operation construction method for coal mine tunnel excavation, including drilling and blasting, slag removal and transportation, and roof support processes, wherein a rake loader is used for slag removal. Its characteristics are that A suspended hydraulic drilling vehicle, hereinafter referred to as a suspended vehicle, is used in parallel construction. The suspended vehicle is suspended on the roof rail at a certain height from the ground and moves on the rail by traction. Workers perform drilling, blasting and roof support operations on the suspended vehicle, and use a rake loader to remove slag at the same time under the suspended vehicle. The suspension vehicle is composed of a power compartment and a hydraulic pump and its accessories in the compartment, an operating compartment and a hydraulic system operating mechanism in the compartment, a suspension load-bearing device, a telescopic structure, a cantilever workbench, a rock drill support structure and a rail-type hydraulic rock drill; the rail-type hydraulic rock drill is installed on the rock drill support structure, and the rock drill support structure can drive the rail-type hydraulic rock drill to move up and down, left and right and flip to achieve drilling positioning; the front end of the cantilever workbench is installed at the bottom of the rock drill support structure, and the rock drill support structure is installed on the telescopic structure, and the telescopic structure is connected to the power compartment and the operating compartment; when the telescopic structure is in a backward retracted state, it drives the cantilever workbench to retreat and hide at the bottom of the power compartment and the operating compartment; when the telescopic structure is extended forward, the cantilever workbench is pulled out from the bottom of the compartment for the staff to temporarily support and charge the line on the platform; The steps of using the above-mentioned suspension vehicle for parallel operation construction are as follows: Step 1: Work preparation First, use the existing excavation technology to pre-dig a starting tunnel of more than 20 meters, and carry out roof support; install a hanging rail on the top of the tunnel and reach the head; then arrange the traction equipment and suspension car on the hanging rail; Step 2: Work begins. The traction suspension vehicle is driven to a position suitable for drilling. The operating valve of the telescopic structure is operated to make it press against the top and bottom plates of the tunnel. The operating valve of the rock drill support structure is operated to determine the hole position according to the blasthole layout diagram. The rock drill is started to drill holes one by one. Step 3: After drilling, the rock drill support structure and the rail-type hydraulic rock drill are folded, the traction suspension vehicle moves forward, the cantilever workbench is brought close to the working surface, the upper blasthole is charged and connected on the cantilever workbench, and the lower blasthole is charged and connected under the cantilever workbench. After all blastholes are charged and connected, the cantilever workbench is folded, the traction suspension vehicle is withdrawn to a safe distance, and blasting is carried out; Step 4: After the blasting smoke has dissipated, push the hanging rail forward to the new front after blasting, and pull the hanging car into the empty roof area near the blasting. Drill anchor holes into the roof according to the drilling operation method, from back to front, drilling in the front, and installing anchors on the cantilever workbench at the same time to support the roof; While doing the above work, a rake loader is arranged at the front, and traditional slag removal work is carried out under the suspension car. If there is too much piled up gangue at the front, which affects the drilling of the upper hole by the rock drill, it should be removed first; Step 5: After the roof support is completed, the traction suspension vehicle is retreated to a position where the rock drill can be deployed, and the next cycle of drilling is carried out; while drilling the upper blasthole, the lower part can continue to remove the slag, and the two can be carried out simultaneously; if the slag removal is completed, the rake loader is removed and the lower blasthole is continued; Step six: After all blast holes are drilled, return to step three to load charges, connect lines and blast; from then on, enter the regular work cycle until the entire tunnel excavation is completed.

2. A special equipment for the parallel operation construction method as claimed in claim 1, It is characterized in that The special equipment is a suspended hydraulic drilling vehicle suspension vehicle, which is specifically composed of a power compartment and a hydraulic pump and its accessories in the compartment, an operating compartment and a hydraulic system operating mechanism in the compartment, a suspension load-bearing device, a telescopic structure, a cantilever workbench, a rock drill support structure and a rail-type hydraulic rock drill; The power compartment and the operating compartment are connected as one, and the power compartment and the operating compartment are hung on the hanging rail through the suspension load-bearing device. The height of the power compartment and the operating compartment from the ground should meet the height required for the excavation head-on slag removal work; The telescopic structure is provided with telescopic sleeves extending forward on both sides of the power compartment and the operating compartment, respectively. The telescopic sleeves are composed of an inner tube, an outer tube and an internal hydraulic telescopic cylinder. The outer tube is fixed to the boxes on both sides of the power compartment and the operating compartment. The front ends of the two inner tubes are respectively connected to bidirectional telescopic hydraulic struts. The upper and lower parts of the two hydraulic strut cylinder bodies are respectively connected to each other through crossbeams to form a frame. The bidirectional telescopic hydraulic struts can be supported on the top and bottom plates when extended in both directions. The rock drill support structure includes a drill arm and a guide rail mounting frame; the drill arm is a hydraulic telescopic drill arm, and two drill arms are provided, and the two drill arms are respectively mounted on the above-mentioned hydraulic pillars through a movable connection structure; the movable connection structure is: a spiral swing oil cylinder is installed at the lower part of the hydraulic pillar cylinder body, and a lifting and telescopic cylinder is installed on the upper end of the spiral swing oil cylinder. A spherical hinge support is provided at the top of the lifting and telescopic cylinder, and the spherical hinge support is hinged to the hydraulic inclined tie rod, and the bottom end of the drill arm outer tube is hinged to the spiral swing oil cylinder, and the upper end of the drill arm outer tube is hinged to the hydraulic inclined tie rod, thereby forming a triangular support form, and the hydraulic pillar is used as a support to realize up and down, left and right swinging; the above-mentioned guide rail mounting frame is used to install the guide rail type hydraulic rock drill, and is installed on the top of the drill arm through the longitudinal rotating cylinder and the transverse rotating cylinder to realize the left and right swing and up and down flipping of the guide rail type hydraulic rock drill; The front end of the cantilever workbench is connected to the lower part of the two hydraulic support cylinders. When the telescopic structure is retracted, the cantilever workbench is driven to retreat and hide at the bottom of the power compartment and the operating compartment. When the telescopic structure is extended forward, the rock drill support structure extends forward and the cantilever workbench is pulled out from the bottom of the compartment, so that the staff can perform temporary support and charge connection work on the platform.

3. The special equipment for the parallel operation construction method as claimed in claim 2, It is characterized in that The hydraulic system operating valve adopts a manual and electric dual-purpose electromagnetic hydraulic valve.

4. The special equipment for the parallel operation construction method according to claim 2, It is characterized in that The cantilever work table is paved with two flat plates, which are respectively fixed on the bidirectional telescopic cylinder heads. When the bidirectional telescopic cylinder is extended, the two flat plates are respectively extended to both sides.

5. The special equipment for the parallel operation construction method according to claim 2, It is characterized in that The power compartment and the operating compartment are open.

6. The special equipment for the parallel operation construction method according to claim 2, It is characterized in that A guard plate hydraulic cylinder is provided above the front of the power compartment and the operating compartment, and a temporary supporting plate is installed on the guard plate hydraulic cylinder to temporarily protect the safety of the workers on the platform.

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