Tunnel drilling and blasting method excavation and support integrated equipment

Abstract

The invention relates to tunnel drilling and blasting method excavation and support integrated equipment which comprises a main body portal frame, a horizontally-arranged telescopic platform is arranged at the top of the main body portal frame, and the telescopic platform is installed at the top of the main body portal frame through telescopic platform sliding rails longitudinally arranged on the two transverse sides of the top of the main body portal frame; a plurality of telescopic mechanical arms are installed on the top of the telescopic platform, a plurality of folding mechanical arms are installed on the two transverse sides in the main body portal frame, and the telescopic mechanical arms and the folding mechanical arms are selected from wet spraying mechanical arms, shot hole and anchor rod drilling arms, vertical arch frame arms, pipe shed and advance anchor rod arms and danger removing arms. A rock drill, a charging machine, a dangerous rock cleaning machine, an arch frame installing machine, an anchor rod grouting machine, a wet spraying mechanical arm, a pipe shed machine, an advance drill and other machines used in a drilling and blasting method are effectively integrated into one device, and high integration of tunnel face excavation supporting construction equipment is achieved; the purposes of improving the construction efficiency, reducing the construction cost, enhancing the intelligent function and ensuring the construction safety are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction equipment, and particularly to an integrated equipment for tunnel excavation and support by drill and blast method. Background Art

[0002] In the construction of mountain tunnels, it is inevitable to design and construct long tunnels. The drill and blast method has advantages that other construction methods such as Tunnel Boring Machine (TBM) do not have in the construction of long tunnels. It can cope with various complex geological conditions, is applicable to tunnels of various cross-sectional shapes and sizes, and has a relatively low equipment cost. With the remarkable progress of construction technology and the gradual modernization of supporting mechanical equipment, the excavation and support methods by drill and blast method have also changed greatly, generally turning to construction means such as less large cross-sections, partial excavation, supplemented by safe and reliable advanced support, and strong support structures. The change of excavation methods requires the support of corresponding construction machinery and efficient and feasible support technologies.

[0003] At present, there is still a large room for improvement in the overall technology of the supporting equipment of the drill and blast method. The deficiencies mainly include: the equipment has a single function, there are many types of full-process supporting equipment, the proportion of time occupied by the frequent conversion operation of the equipment is high, which reduces the construction efficiency; the working space at the heading face is limited, the construction equipment cannot be deployed simultaneously, and the reasonable parallel construction of some processes cannot be realized; some processes such as mechanized charging support are still blank and are still in the backward state of manual stick operation; the mechanical equipment frequently shuttles between the main construction operation faces, and due to poor light, large equipment, many blind spots, and frequent disassembly of high-power power supplies, there are many potential safety hazards.

[0004] Therefore, it is necessary to propose new measures to overcome the above defects. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated equipment for tunnel excavation and support by drill and blast method to solve the problems existing in the prior art such as single equipment function, many types, and low construction efficiency caused by frequent equipment conversion operations.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] An integrated equipment for tunnel excavation and support by drill and blast method, the integrated equipment includes a main gantry, and a horizontally arranged telescopic platform is provided at the top of the main gantry. The telescopic platform is installed on the top of the main gantry through telescopic platform slide rails longitudinally arranged on the transverse sides of the top of the main gantry (21).

[0008] A plurality of telescopic robotic arms are installed on the top of the telescopic platform, and a plurality of folding robotic arms are installed on the transverse sides inside the main gantry. The telescopic robotic arms and the folding robotic arms are selected from wet spraying robotic arms, blast hole and bolt drilling arms, arch erection arms, pipe shed and advanced bolt arms, and danger removal arms.

[0009] Furthermore, vertical platform legs are provided at the bottom of the longitudinally extended end of the telescopic platform.

[0010] Furthermore, a telescopic shield is further provided at the top of the main gantry, and the telescopic shield is installed on the main gantry through a hydraulic telescopic rod installation track provided on its bottom surface.

[0011] Furthermore, the telescopic shield is arched, and strip-shaped bolt skylights arranged circumferentially are provided thereon.

[0012] Furthermore, a bolt rolling door is provided on the top surface of the telescopic shield. The bolt rolling door is of an arc-shaped structure and matches the shape of the telescopic shield. The bolt rolling door is installed on the top of the telescopic shield through slide rails longitudinally arranged on the transverse sides at the top of the telescopic shield;

[0013] Strip-shaped grooves arranged circumferentially are provided on the bolt rolling door, and the bolt skylights can be blocked or exposed when the bolt rolling door moves longitudinally forward and backward.

[0014] Furthermore, high-pressure water shield generators are evenly arranged circumferentially inside the telescopic shield, and high-pressure fog guns are provided at the bottom of the circumferential ends of the telescopic shield.

[0015] Furthermore, a foldable and retractable explosion-proof door is further provided at one longitudinal end of the main gantry. After contraction, the explosion-proof door is located on the transverse sides of the main gantry inside the telescopic shield, and after expansion, the explosion-proof door covers the end of the main gantry.

[0016] Furthermore, a longitudinally arranged telescopic robotic arm slide rail is provided on the top of the telescopic platform, and the base of the telescopic robotic arm can move longitudinally forward and backward along the telescopic robotic arm slide rail;

[0017] A robotic arm card slot is provided at the longitudinal front end of the telescopic robotic arm slide rail, and the base of the telescopic robotic arm moves longitudinally forward and is clamped into the robotic arm card slot.

[0018] Furthermore, horizontally arranged equipment installation platforms are provided on the transverse sides inside the main gantry, and anti-collision railings are provided inside the equipment installation platforms.

[0019] Furthermore, a crawler system is provided at the bottom of the main gantry.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The present invention provides an integrated equipment for tunneling excavation and support. In view of the actual characteristics of multiple processes, large interference, slow progress, poor environment and high risk in the construction of the drill and blast method, a variety of machines used in the drill and blast method, such as rock drills, chargers, loose rock cleaners, arch erectors, bolt grouting machines, wet shotcrete manipulators, pipe roof machines, and advanced drills, are effectively integrated into one equipment, realizing the high integration of the tunneling face excavation and support construction equipment, and achieving the goals of improving construction efficiency, reducing construction costs, enhancing intelligent functions, and ensuring construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a structural diagram of the integrated equipment provided by the embodiment of the present invention.

[0024] Figure 2 It is an internal structural diagram of the integrated equipment provided by the embodiment of the present invention.

[0025] Figure 3 It is a layout diagram of the telescopic platform.

[0026] Figure 4 It is a layout diagram of the robotic arm slot.

[0027] Figure 5 It is a layout diagram of the explosion-proof door telescopic track and slider.

[0028] Figure 6 It is a schematic diagram of the working posture of the robotic arm.

[0029] Figure 7 It is a layout diagram of the bolt rolling door.

[0030] Figure 8 It is a layout diagram of the high-pressure water shield generator.

[0031] Figure 9 It is an internal structural diagram of the telescopic shield of the integrated equipment provided by the embodiment of the present invention.

[0032] Figure 10 It is a schematic diagram of the integrated equipment provided by the embodiment of the present invention during the excavation construction of the bench method.

[0033] Figure 11 It is a schematic diagram of the robotic arm deployment of the integrated equipment provided by the embodiment of the present invention in the combined repair tunnel project.

[0034] Figure 12 It is a schematic diagram of the deployment of the robotic arm in the separate repair tunnel project and the auxiliary adit tunnel project of the integrated equipment provided by the embodiments of the present invention.

[0035] The markings in the figure are:

[0036] 1 - Telescopic shield, 2 - Blast door, 3 - Telescopic platform slide rail, 4 - Robotic arm card slot, 5 - Telescopic platform, 6 - Platform leg, 7 - Blast door telescopic track and slider, 8 - Bolt rolling door, 9 - Bolt skylight, 10 - High-pressure water shield generator, 11 - High-pressure fog cannon, 12 - Blast door unit plate, 13 - Telescopic robotic arm, 14 - Gantry, 15 - Anti-collision railing, 16 - Folding robotic arm, 17 - Telescopic robotic arm slide rail, 18 - Air compression equipment, 19 - Control equipment, 20 - Shotcrete hopper, 21 - Main gantry, 22 - Crawler system, 23 - Equipment installation platform, 24 - Hydraulic system, 25 - Control room;

[0037] A - Working posture of the telescopic robotic arm, B - Working posture of the folding robotic arm; Detailed implementation manners

[0038] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "longitudinal", "lateral", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "setting", etc. should be understood in a broad sense. For example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] It should also be noted that although the order of steps is involved in the method description, in some cases, it can be executed in a different order from here and should not be construed as a limitation on the order of steps.

[0042] In the specific implementation manner, the tunnel line direction is defined as the longitudinal direction, the direction perpendicular to it is defined as the transverse direction, Figure 1 the right side in Figure 1 is defined as the front, and the left side in

[0043] The present invention provides an integrated equipment for tunnel excavation and support by drilling and blasting, which effectively integrates various construction equipment required for the heading face in the current excavation by drilling and blasting. The main integrated equipment includes: rock drill, charging machine, dangerous rock cleaning machine, arch installation machine, bolt grouting machine, wet shotcreting manipulator, pipe shed machine, advanced drill, etc., greatly reducing the types and quantities of construction machinery. One piece of equipment can meet all the requirements of the heading face construction operations.

[0044] Specifically, the integrated equipment of the present invention is integrated and carried on a main gantry 21, as shown in Figure 9 , the main gantry 21 is in a cuboid frame structure, including a left rectangular frame, a right rectangular frame and a top rectangular frame, and two gantries 14 are formed on the longitudinal front and rear sides. A number of diagonal supports and vertical supports are designed inside the left rectangular frame and the right rectangular frame to improve the bearing capacity of the main gantry 21.

[0045] A horizontally arranged telescopic platform 5 is provided on the top of the main gantry 21, as shown in Figure 3 , the telescopic platform 5 is installed on the top of the main gantry 21 through telescopic platform slide rails 3 longitudinally arranged on the transverse two sides of the top of the main gantry 21. After configuring corresponding driving equipment, the telescopic platform 5 can move longitudinally back and forth on the top of the main gantry 21. The telescopic platform 5 is a bearing and installation platform for various robotic arms. The robotic arms in this area can adopt telescopic robotic arms, which can extend and retract longitudinally. Specifically, a longitudinally arranged telescopic robotic arm slide rail 17 is provided on the top of the telescopic platform 5, and the base of the telescopic robotic arm 13 can move longitudinally back and forth along the telescopic robotic arm slide rail 17, extending during work and retracting in other cases to avoid interfering with other construction operations. At the same time, a robotic arm slot 4 is provided at the longitudinal front end of the telescopic robotic arm slide rail 17, and the base of the telescopic robotic arm 13 moves longitudinally forward and is clamped into the robotic arm slot 4 to provide stable support for the construction operations of the robotic arm. The telescopic robotic arm 13 is selected from a wet shotcreting robotic arm, a blast hole and bolt drilling arm, an arch erection arm, a pipe shed and advanced bolt arm, and a dangerous rock cleaning arm, integrating and integrating multiple functions. The telescopic robotic arm has a total of three sections, and the second and third sections can be retracted into the first section, with an effective working length of 8 - 10m. Among them, a hanging basket is provided at the front end of the arch erection arm, which can be used for charging operations at the heading face. In addition, a shotcrete hopper 20 is also provided outside the main gantry 21 to cooperate with the wet shotcreting robotic arm for shotcrete mixing operations.

[0046] In addition, a plurality of robotic arms are installed on the transverse sides inside the main gantry 21. The robotic arms in this area are folding robotic arms with high flexibility, selected from wet spraying robotic arms, blast hole and bolt drilling arms, arch erection arms, pipe shed and advanced bolt arms, and danger removal arms, and operate together with other telescopic robotic arms on the top of the telescopic platform 5. For example Figure 6 . The folding robotic arm has a total of three sections. Both ends of the first section can rotate. One end of the second section rotates and the other end telescopes. The third section can retract into the second section. The effective working length of the folding robotic arm is 8-10 m, and the root is a turntable structure.

[0047] For example Figure 3 , vertical platform legs 6 are provided at the bottom of the longitudinally extended end of the telescopic platform 5. The platform legs 6 are telescopic legs, and the height of the bottom end can be adjusted up and down. For example Figure 10 , when the bench cut method is used for excavation construction, the bottom end of the platform leg 6 can be supported on the bench, and the upper and lower benches are constructed simultaneously. The telescopic robotic arm 13 on the telescopic platform 5 constructs the upper bench, and the folding robotic arms on the transverse sides inside the main gantry 21 are responsible for constructing the lower bench, ensuring that the net distance between the telescopic manipulator and the upper bench face does not exceed the effective working length of the robotic arm. When the full face method is used for construction, the telescopic platform 5 does not extend, and all robotic arms construct together.

[0048] For example Figure 1 and Figure 8 , a telescopic shield 1 is further provided on the top of the main gantry 21 to protect the equipment from damage by blasting flying rocks. The telescopic shield 1 is installed on the main gantry 21 of the track body through the hydraulic telescopic rods provided on its bottom surface, and the hydraulic telescopic rods are configured with hydraulic power components. After the equipment is in place, the telescopic shield 1 is jacked up under the coordinated work of the hydraulic telescopic rods and fits with the shotcrete initial support working surface. On the one hand, it can provide annular support for the equipment to ensure the stability of equipment operation. On the other hand, it can form a shield-shaped protection structure to prevent collapse and falling blocks from causing harm to construction workers and equipment, and improve construction safety. For example Figure 7 , the telescopic shield 1 is arched, and strip-shaped bolt skylights 9 are arranged circumferentially thereon. At the same time, a bolt rolling door 8 is provided on the top surface of the telescopic shield 1. The bolt rolling door 8 is an arc-shaped structure and matches the shape of the telescopic shield 1. The bolt rolling door 8 is installed on the top of the telescopic shield 1 through the slide rails longitudinally arranged on the transverse sides of the top of the telescopic shield 1. The bolt rolling door 8 is provided with circumferentially arranged strip-shaped grooves. When the bolt rolling door 8 moves longitudinally back and forth, it can block or expose the bolt skylight 9. When the bolt skylight 9 is exposed, the internal telescopic robotic arm can extend for bolt construction or for inspection of the shotcrete surface.

[0049] The dust in the tunnel is mainly generated from the blasting operation and mucking operation of the face. For example Figure 8, a high-pressure water shield generator 10 is circumferentially and uniformly arranged on the inner side of the telescopic shield 1. High-pressure fog guns 11 are arranged at the bottom of both circumferential ends of the telescopic shield 1 for dust removal in the tunnel. The water mist shield is formed by a high-pressure water mist pipeline arranged at the front end of the equipment. The pipeline can spray high-pressure water mist to both sides simultaneously, forming a complete water shield within the entire tunnel cross-section. When the air on one side of the heading face passes through the water shield, it is purified by the water mist inside the water shield, and the polluted air is controlled within a limited range. In addition, several high-pressure water mist guns 11 are arranged at the front end of the equipment, which can spray high-pressure water mist towards the heading face. When blasting and mucking operations are carried out, the dust within the range from the equipment to the heading face can be quickly reduced, completely solving the problem of dust diffusion from the two heading faces to the outside.

[0050] As Figure 1 and Figure 5 , an explosion-proof door 2 that can be folded and retracted is also arranged at one longitudinal end of the main gantry 21. After the explosion-proof door 2 is retracted, it is located on the transverse sides of the main gantry 21 inside the telescopic shield 1. After the explosion-proof door 21 is unfolded, it covers the end of the main gantry 21. Since there are no construction equipment in the central part of the main gantry 21 and no protection is required, the explosion-proof door 2 can be designed in a non-full-section shielding form with an open middle part. The explosion-proof door 2 is installed on the main gantry 21 through an explosion-proof door telescopic track and a slider 7. Specifically, the explosion-proof door 2 is a sliding and folding structure and can be composed of 4 explosion-proof door unit plates, including the upper left, lower left, upper right, and lower right. The upper left and the lower left are connected by a pin shaft, and the upper left can rotate 180° along the pin shaft and overlap with the lower left. The upper right and the lower right are the same. Slide rails are arranged on both outer sides of the main gantry 21. The lower left and lower right explosion-proof door unit plates are connected to the slide rails through a pin shaft structure. The lower left and lower right explosion-proof door unit plates can rotate along the pin shaft and slide on the track driven by the pin shaft structure to complete the arrangement and recovery of the explosion-proof door.

[0051] In addition, as Figure 2 , horizontally arranged equipment installation platforms 23 are arranged on both transverse sides inside the main gantry 21. Anti-collision railings 15 are provided on the inner sides of the equipment installation platforms 23 to prevent the equipment from being hit by passing vehicles. A three-wave reinforced corrugated guardrail is adopted, with a height of 1.1 m from the ground and is connected to the equipment skeleton. The equipment installation platforms 23 are used to install other auxiliary equipment, including air compression equipment 18, control equipment 19, hydraulic system 24, control room 25, etc.

[0052] As Figure 4 , a crawler system 22 is arranged at the bottom of the main gantry 21, which can drive the overall integrated equipment to move, and construction vehicles can pass through the inside of the main gantry 21.

[0053] Although the integrated equipment of the present invention has powerful functions, if a failure occurs, it will have a greater impact on the entire tunnel construction. Therefore, the key components of the integrated equipment adopt the idea of parallel design to increase the "backup" of the key components and ensure the reliability of equipment use.

[0054] The integrated equipment of the present invention has multiple construction functions, including drilling, auxiliary charging, danger and debris clearance, arch installation, bolt construction, shotcrete, etc. According to different traffic modes and usage functions, tunnel engineering is roughly divided into three tunnel cross-section forms, including combined repair tunnel cross-section, separate repair tunnel cross-section, and auxiliary adit cross-section. By deploying different types of construction robotic arms in the integrated equipment of the present invention, it can be applicable to the construction of these three tunnel cross-section forms.

[0055] 1. Combined repair tunnel project:

[0056] According to Figure 11 deploy the robotic arms in the integrated equipment. The telescopic robotic arms at the top are, from left to right, a shotcrete robotic arm, a blast hole and bolt drilling arm, an arch erection arm, a blast hole and bolt drilling arm, a pipe shed and advanced bolt arm. The folding robotic arms on the left are, from top to bottom, an arch erection arm, a danger clearance arm, a blast hole and bolt drilling arm. The folding robotic arms on the right are, from top to bottom, an arch erection arm, a shotcrete robotic arm, a blast hole and bolt drilling arm.

[0057] 2. Separate repair tunnel project and auxiliary adit tunnel project:

[0058] According to Figure 12 deploy the robotic arms in the integrated equipment. The telescopic robotic arms at the top are, from left to right, a blast hole and bolt drilling arm, an arch erection arm, a blast hole and bolt drilling arm, a pipe shed and advanced bolt arm, a blast hole and bolt drilling arm, an arch erection arm. The folding robotic arms on the left are, from top to bottom, a blast hole and bolt drilling arm, a pipe shed and advanced bolt arm, a blast hole and bolt drilling arm. The folding robotic arms on the right are, from top to bottom, a blast hole and bolt drilling arm, a shotcrete robotic arm, a blast hole and bolt drilling arm. In addition, a set of telescopic robotic arms is deployed at the top inside the main gantry 21, which are, from left to right, a danger clearance arm, an arch erection arm, a shotcrete robotic arm.

[0059] Among them:

[0060] 1) The blast hole and bolt drilling arms are evenly and symmetrically arranged along the cross-section, and the efficiency is higher than that of a three-boom rock drilling jumbo.

[0061] 2) The arch erection arm is equipped with a folding hanging basket, which can be used for various operations such as arch erection, bolt grouting, troubleshooting of drilling, and charging at the same time.

[0062] 3) The pipe shed and advanced bolt arm can construct pipe shed, advanced geological drill, long bolt, and cable anchor.

[0063] 4) The shotcrete robotic arms can operate simultaneously to improve the shotcrete efficiency.

[0064] 5) The danger clearance arm is equipped with two danger clearance tools, a breaker head and a vibratory hammer, to improve the construction efficiency.

[0065] Verified by on-site construction, the initial support shotcreting operation efficiency of the integrated equipment of the present invention is doubled compared with that of traditional wet shotcreting manipulators, and the operation efficiency of hole drilling is increased by 33% compared with that of three-boom rock drilling jumbo, significantly shortening the excavation operation time. The equipment has a high degree of automation, greatly reducing the number of operators. Only one set of operators is required to complete the work of the original eight sets of equipment operators. The integrated equipment only needs one set of chassis and walking system to replace the relevant components of the original eight sets of equipment, which can reduce the total cost of the equipment.

[0066] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention pertains, based on the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. An integrated equipment for tunnel excavation and support by drill and blast method, characterized in that: The integrated equipment includes a main gantry (21), and a horizontally arranged telescopic platform (5) is provided at the top of the main gantry (21). The telescopic platform (5) is installed on the top of the main gantry (21) through telescopic platform slide rails (3) longitudinally arranged on the transverse sides of the top of the main gantry (21). A plurality of telescopic robotic arms (13) are installed on the top of the telescopic platform (5), and a plurality of folding robotic arms are installed on the transverse sides inside the main gantry (21). The telescopic robotic arms (13) and the folding robotic arms are selected from wet shotcreting robotic arms, drill arms for blast holes and anchor bolts, arch erection arms, pipe shed and advanced anchor bolt arms, and danger removal arms.

2. The integrated equipment for tunnel excavation and support by drill and blast method according to claim 1, characterized in that: Vertical platform legs (6) are provided at the bottom of the longitudinally extending end of the telescopic platform (5).

3. The integrated equipment for tunnel excavation and support by drill and blast method according to claim 2, characterized in that: A telescopic shield (1) is further provided at the top of the main gantry (21), and the telescopic shield (1) is installed on the main gantry (21) through hydraulic telescopic rod installation tracks provided on its bottom surface.

4. The integrated equipment for tunnel excavation and support by drill and blast method according to claim 3, characterized in that: The telescopic shield (1) is arched, and strip-shaped anchor bolt skylights (9) are arranged circumferentially thereon.

5. The integrated equipment for tunnel excavation and support by drill and blast method according to claim 4, characterized in that: An anchor bolt rolling door (8) is provided on the top surface of the telescopic shield (1). The anchor bolt rolling door (8) is of an arc-shaped structure and matches the shape of the telescopic shield (1). The anchor bolt rolling door (8) is installed on the top of the telescopic shield (1) through slide rails longitudinally arranged on the transverse sides of the top of the telescopic shield (1). Strip-shaped grooves are arranged circumferentially on the anchor bolt rolling door (8), and the anchor bolt skylight (9) can be blocked or exposed when the anchor bolt rolling door (8) moves longitudinally forward and backward.

6. The integrated equipment for tunnel excavation and support by drill and blast method according to claim 5, characterized in that: High-pressure water shield generators (10) are arranged circumferentially and evenly inside the telescopic shield (1), and high-pressure fog guns (11) are provided at the bottom of the circumferential ends of the telescopic shield (1).

7. The integrated equipment for tunnel excavation and support by drill and blast method according to claim 6, characterized in that: A foldable and retractable explosion-proof door (2) is further provided at one longitudinal end of the main gantry (21). After contraction, the explosion-proof door (2) is located on the transverse sides of the main gantry (21) inside the telescopic shield (1), and after expansion, the explosion-proof door (21) covers the end of the main gantry (21).

8. The integrated equipment for tunnel excavation and support by drill and blast method according to claim 7, characterized in that: A longitudinally arranged telescopic robotic arm slide rail (17) is provided on the top of the telescopic platform (5), and the base of the telescopic robotic arm (13) can move longitudinally forward and backward along the telescopic robotic arm slide rail (17). A robotic arm slot (4) is provided at the longitudinal foremost end of the telescopic robotic arm slide rail (17), and the base of the telescopic robotic arm (13) moves longitudinally forward and is snapped into the robotic arm slot (4).

9. The integrated equipment for tunnel drilling and blasting excavation and support according to claim 8, characterized in that: Horizontally arranged equipment installation platforms (23) are provided on both lateral sides inside the main gantry (21), and anti-collision railings (15) are provided on the inner sides of the equipment installation platforms (23).

10. The integrated equipment for tunnel drilling and blasting excavation and support according to claim 9, characterized in that: A crawler system (22) is provided at the bottom of the main gantry (21).

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