Advanced support system and method for continuous construction of fully mechanized tunnel

Abstract

The present invention discloses an advanced support system for continuous construction of comprehensive tunnel excavation, comprising a first support group and a second support group arranged in succession, wherein the first support group comprises a first self-moving support, and the second support group comprises a second self-moving support; the first self-moving support and the second self-moving support both comprise a front support frame, a rear support frame, a front support cylinder group, a rear support cylinder group, a step-shifting cylinder, and a cylinder control valve, wherein the front support cylinder group is installed at the bottom of the front support frame, and the rear support cylinder group is installed at the bottom of the rear support frame, and a step-shifting cylinder is provided between the front support frame and the rear support frame, and the front support cylinder group, the rear support cylinder group, and the step-shifting cylinder are all connected to the cylinder control valve. And an advanced support method for continuous construction of comprehensive tunnel excavation. The present invention has the following beneficial effects: parallel operation of excavation and support is realized, thereby realizing continuous operation of comprehensive excavation construction, and solving the problem of empty top support operation.

Description

Technical Field

[0001] The invention relates to a tunnel excavation support system and method, and in particular to a tunnel comprehensive excavation construction continuous excavation advance support system and method. Background Art

[0002] At present, there are two main construction technologies for coal mine tunneling: blasting and comprehensive excavation (there are also a small number of shield tunnels, but they are generally in the test verification stage). Blasting is generally a low-efficiency excavation technology used when the rock is particularly hard, the tunnel angle is particularly large or the structure is small, and it is not suitable for comprehensive excavation construction. The comprehensive excavation technology is used in high-bottom extraction tunnels or coal tunnels with rock hardness below 7. At present, the mechanization rate of comprehensive excavation of tunnels has reached 70%. The comprehensive excavation technology has improved the mechanization degree of tunnel excavation, but it still has not solved several prominent contradictions such as: 1. The problem of parallel operation of excavation and support, and the low efficiency of single entry; 2. Manual support is still required, and the physical labor intensity is high; 3. The head-on working environment is poor and the safety risk is high.

[0003] The average single advance of coal tunnels in traditional comprehensive excavation technology does not exceed 300m / month, and that of rock tunnels does not exceed 200m / month. Based on the average time of 40 minutes for a comprehensive excavator to cut 1m of kiln, the monthly comprehensive single advance should exceed 1000m, which is a huge gap from the actual situation. This is because the tunneling machine is parked most of the time waiting for head-on support, and the efficiency of the comprehensive excavator is not fully utilized. According to statistics, the support time of comprehensive excavation construction accounts for 60% of the total time. Therefore, parallel excavation is the key to improving the efficiency of single advance. Secondly, permanent support of traditional comprehensive excavation technology still requires manual work. Generally, 6 people are required to work at the same time. Although there is onboard temporary support, its effect is limited, and the roof often falls off. Statistics show that 80% of roof accidents occur when the support is being carried out after the head-on kiln is cut, and the labor intensity of manual drilling support is very high. With fewer and fewer coal mine personnel, this contradiction is becoming more and more prominent. Finally, the working environment of the comprehensive excavation tunnel is poor, with high dust and coal dust. Since traditional comprehensive excavation requires manual construction of anchor rods at the head, it is difficult to solve the problem of separation between the head and the rear. Even if the local ventilation systems at the head and the rear are optimized, it is difficult to improve the working environment of the concentrated working area.

[0004] For example, the application number: 201811237479.5 discloses an advanced support system for a mining face, characterized in that: it includes an advanced reinforcement support system; the advanced reinforcement support system includes two rows of grouting anchor cables and two rows of grouting anchor cable trusses arranged on the top plate along the extension direction of the tunnel; and multiple adjacent grouting anchor cables along the extension direction of the tunnel are connected by grouting anchor cable trusses. It cannot solve the problem of parallel operation of excavation and support.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The technical problem to be solved by the present invention is: how to solve the problem that the existing excavation and support cannot be operated in parallel.

[0007] The present invention solves the above technical problems through the following technical means:

[0008] The tunnel comprehensive excavation continuous construction advance support system comprises a first support group and a second support group arranged continuously, wherein the first support group comprises a first self-moving support, and the second support group comprises a second self-moving support;

[0009] The first self-moving bracket and the second self-moving bracket both include a front support frame and a rear support frame that can slide and support relative to each other, a front support cylinder group, a rear support cylinder group, a shifting cylinder, and a cylinder control valve. The front support cylinder group is installed at the bottom of the front support frame, and the rear support cylinder group is installed at the bottom of the rear support frame. A shifting cylinder is provided between the front support frame and the rear support frame to control the mutual sliding of the front support frame and the rear support frame. The front support cylinder group, the rear support cylinder group, and the shifting cylinder are all connected to the cylinder control valve.

[0010] The present invention realizes parallel operation of excavation and support by "the front support cylinder group continues to support the periphery, the rear support cylinder group is retracted through the cylinder control valve, the shifting cylinder is extended forward by operating the cylinder control valve to drive the rear support frame forward, and after moving into place, the rear support cylinder group is lowered for support through the cylinder control valve, and then the front support cylinder group is retracted through the cylinder control valve, and the shifting cylinder is operated to retract backward to drive the front support frame forward. After moving into place, the front support cylinder group is lowered for support, completing one frame stepping movement process", thereby realizing continuous operation of comprehensive excavation construction and solving the problem of support empty top operation.

[0011] Preferably, it also includes a plurality of top support cylinders, which are installed on the top surfaces of the first self-moving bracket and the second self-moving bracket, and are connected to cylinder control valves.

[0012] Preferably, it also includes a plurality of side support cylinders, which are installed on the sides of the first self-moving bracket and the second self-moving bracket, and are connected to the cylinder control valves.

[0013] The top and the surrounding area are supported by the top support cylinder and the side support cylinder.

[0014] Preferably, the front support frame includes at least two front support cross beams, at least one front support longitudinal beam, and at least two front support vertical beams. The front support cross beams are arranged in parallel, and the two ends of the front support longitudinal beams are connected to the bottom of the front support cross beams through the front support vertical beams; the rear support frame includes at least two rear support cross beams, at least one rear support longitudinal beam, and at least two rear support vertical beams. The rear support cross beams are arranged in parallel, and the two ends of the rear support longitudinal beams are connected to the bottom of the rear support cross beams through the rear support vertical beams; the front support cross beam and the rear support cross beam are arranged side by side, the front support longitudinal beam and the rear support longitudinal beam are arranged at intervals, the two ends of the front support longitudinal beam extend out of the side of the rear support cross beam, and the two ends of the moving cylinder are connected between adjacent front support longitudinal beams and rear support longitudinal beams.

[0015] The front support beam and the rear support beam support each other, and can be staggered with each other under the action of the shifting cylinder, so that one of them moves forward and the rear one continues to move forward, and finally the entire support group moves forward or backward, reducing the time and effort of manual support.

[0016] Preferably, the first bracket group further comprises an upper anchor net mechanism, and the upper anchor net mechanism is installed at the end of the first self-moving bracket away from the second bracket group.

[0017] Preferably, the upper anchor net mechanism includes an anchor net flipping cylinder, an anchor net angle cylinder, and an anchor net top plate, the two ends of the anchor net angle cylinder are respectively hinged to the front end of the first self-moving bracket and one side of the connecting plate, and the two ends of the anchor net flipping cylinder are respectively hinged to the other side of the connecting plate and the anchor net top plate.

[0018] Preferably, the second support group further comprises at least one group of anchor drill parts, which are vertically mounted at the end of the second mobile support. The anchor drill can be rotated 20 degrees left and right to achieve construction at different angles.

[0019] Preferably, the anchor drilling rig unit comprises an anchor drilling rig support frame and an anchor drilling rig, the anchor drilling rig support frame is installed below the second self-moving bracket, and the anchor drilling rig is vertically fixedly installed on the anchor drilling rig support frame.

[0020] Preferably, it also includes a lifting cylinder, the top end of the anchor drilling rig support frame is hinged below the second self-moving support frame, one end of the lifting cylinder is hinged to the second self-moving support frame, and the other end of the lifting cylinder is hinged to the anchor drilling rig support frame.

[0021] The present invention installs different equipment on different support groups, such as installing an anchor net mechanism on the first support group and an anchor drilling rig on the second support group. In addition, belt conveyors, dust removal fans, etc. can also be installed to achieve different tasks and selectively perform multiple tasks to achieve excavation, support, ventilation, and waste removal, thereby improving efficiency.

[0022] The present invention also provides an advanced support method for continuous construction of tunnel comprehensive excavation. Using the above-mentioned advanced support system for continuous construction of tunnel comprehensive excavation, the first support group further includes an upper anchor net mechanism, which is installed at the end of the first self-moving support away from the second support group, and the second support group further includes at least one group of anchor drilling rigs, which are vertically installed at the end of the second movable support, including the following steps:

[0023] S01: After the tunnel boring machine completes the cutting work, the upper anchor net mechanism realizes the laying of the top anchor net;

[0024] S02: The front support cylinder group of the first self-moving support continues to support the periphery, and the rear support cylinder group is retracted through the cylinder control valve, and the step cylinder is operated to extend forward through the cylinder control valve to drive the rear support frame forward. After moving into place, the rear support cylinder group is lowered for support through the cylinder control valve, and then the front support cylinder group is retracted through the cylinder control valve, and the step cylinder is operated to retract backward to drive the front support frame forward. After moving into place, the front support cylinder group is lowered for support, and a frame step movement process is completed;

[0025] S03: The moving process of the second self-moving bracket is the same as that of the first self-moving bracket. If there are multiple self-moving brackets, the moving process is the same;

[0026] S04: Use the anchor drilling rig to carry out anchor (cable) construction.

[0027] The advantages of the present invention are:

[0028] The present invention realizes parallel operation of excavation and support by "the front support cylinder group continues to support the periphery, the rear support cylinder group is retracted through the cylinder control valve, the stepping cylinder is extended forward by operating the cylinder control valve, and the rear support frame is moved forward. After moving into place, the rear support cylinder group is lowered for support through the cylinder control valve, and then the front support cylinder group is retracted through the cylinder control valve, and the stepping cylinder is operated to retract backward to drive the front support frame forward. After moving into place, the front support cylinder group is lowered for support, completing one frame stepping movement process". Therefore, the continuous operation of comprehensive excavation construction is realized, and the problem of supporting empty top operation is solved. The supporting cylinders support the top and the periphery; the front supporting beam and the rear supporting beam support each other, and can be staggered with each other under the action of the shifting cylinder, so that one of them moves forward and the latter continues to move forward, and finally the entire support group moves forward or backward, reducing the time and effort of manual support and improving support efficiency; the present invention installs different equipment on different support groups, such as installing an anchor net mechanism, a dust removal fan, and a dust removal water curtain on the first support group, and installing an anchor drill on the second support group. In addition, a belt conveyor can also be installed to achieve different tasks, selectively perform multiple tasks, and realize excavation, support, ventilation, and gangue discharge, thereby improving efficiency. Description of the drawings

[0029] Figure 1 It is a structural schematic diagram of an advanced support system for continuous construction of comprehensive tunnel excavation according to an embodiment of the present invention;

[0030] Figure 2 is a schematic structural diagram of a first self-moving support;

[0031] Figure 3 This is the main view of the advanced support system for continuous construction of tunnel comprehensive excavation;

[0032] Figure 4 yes Figure 3 Side view of

[0033] Figure 5 yes Figure 3 A top view of

[0034] Figure 6 yes Figure 3 A magnified image of point A;

[0035] Figure 7 yes Figure 3 A magnified view of point B;

[0036] Figure 8 This is a schematic diagram of the bolting rig installation;

[0037] Fig. 9 It is a structural schematic diagram of the advanced support system for continuous construction of tunnel comprehensive excavation in embodiment 2 of the present invention.

[0038] Numbers in the figure: first support group 1, first self-moving support 11, upper anchor net mechanism 12, front support frame 111, front support crossbeam 1111, front support longitudinal beam 1112, front support vertical beam 1113, rear support frame 112, rear support crossbeam 1121, rear support longitudinal beam 1122, rear support vertical beam 1123, front support cylinder 113, rear support cylinder 114, shift cylinder 115, cylinder control valve 116, top support cylinder 13, side support cylinder 14,

[0039] The second support group 2, the second self-moving support 21, the anchor net turning cylinder 121, the anchor net angle cylinder 122, the anchor net top plate 123, the anchor drilling rig part 22, the anchor drilling rig support frame 221, the anchor drilling rig 222, the lifting cylinder 223, the angle adjustment plate 224,

[0040] The third bracket group 3. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1:

[0043] like Figure 1 As shown, the tunnel comprehensive excavation continuous construction advance support system includes a first support group 1 and a second support group 2 arranged continuously. The first support group 1 includes a first self-moving support 11 and an upper anchor net mechanism 12. The upper anchor net mechanism 12 is installed at the end of the first self-moving support 11 away from the second support group 2, the left end in the figure;

[0044] The second support group 2 includes a second self-moving support 21 and two groups of anchor drilling rigs 22. The anchor drilling rigs 22 are vertically mounted at both ends of the second movable support 21.

[0045] Combination Figure 2 , Figure 3 As shown, in this embodiment, the first self-moving bracket 11 and the second self-moving bracket 21 have the same structure. Here, the first self-moving bracket 11 is taken as an example. The first self-moving bracket 11 includes a front support frame 111 and a rear support frame 112 that can slide and support relative to each other, the front support cylinder group includes a plurality of front support cylinders 113, the rear support cylinder group includes a plurality of rear support cylinders 114, a shifting cylinder 115, and a cylinder control valve 116. The front support cylinder 113 is symmetrically installed at the bottom of the front support frame 111, and the rear support cylinder 114 is symmetrically installed at the bottom of the rear support frame 112. A shifting cylinder 115 is provided between the front support frame and the rear support frame to control the mutual sliding of the front support frame and the rear support frame. The front support cylinder 113, the rear support cylinder 114, and the shifting cylinder 115 are all connected to the cylinder control valve.

[0046] Specifically, Figure 2 As shown, the front support frame 111 is a symmetrical structure, including three front support cross beams 1111, two front support longitudinal beams 1112, and six front support vertical beams 1113. The three front support cross beams 111 are arranged in parallel, and the two ends of the front support longitudinal beams 112 are connected to the bottom of the front support cross beams 111 through the front support vertical beams 113. The front support cylinder 113 is installed below the connection between the front support cross beams 1111 and the front support longitudinal beams 1112 on both sides (that is, below the front support vertical beams 1113);

[0047] The rear support frame 112 is a symmetrical structure including three rear support cross beams 1121, two rear support longitudinal beams 1122, and six rear support vertical beams 1123. The rear support cross beams 1121 are arranged in parallel, and the two ends of the rear support longitudinal beams 1122 are connected to the bottom of the rear support cross beam 1121 through the rear support vertical beams 1123; the rear support cylinder 114 is installed below the connection between the rear support cross beams 1121 and the rear support vertical beams 1122 on both sides (that is, below the rear support vertical beams 1123), the front support cross beam 1111 and the rear support cross beam 1121 are arranged side by side, the front support longitudinal beam and the rear support longitudinal beam are arranged at intervals, and the two ends of the front support longitudinal beam 1112 extend out of the side of the rear support cross beam 1121, and the two ends of the two moving cylinders 115 are connected between the second front support longitudinal beam and the first rear support longitudinal beam (counting from left to right).

[0048] With the use of the vertical beams, the horizontal beams and the longitudinal beams form a structure with upper and lower spacing, which facilitates the front support frame 111 and the rear support frame 112 to cross, support and limit each other.

[0049] The front support beam 1111 and the rear support beam 1121 support and interlace each other, and can move along the beam direction under the action of the shifting cylinder, thereby reducing the time and effort of manual support.

[0050] It should be noted that the first self-moving support 11 and the second self-moving support 21 have the same components, but the number of minimum units of the front support frame and the rear support frame can be the same or different. If different, the front support frame 111 may include M front support cross beams 1111, N front support longitudinal beams 1112, and M*N front support vertical beams 1113, and the rear support frame 112 may include M rear support cross beams 1121, N rear support longitudinal beams 1122, and M*N rear support vertical beams 1123; M is at least 2, N is at least 1, and N is an integer. The length of the entire support group can be adjusted according to the use length of the tunnel.

[0051] like Figure 1 As shown in or 2, the first bracket group 1 and the second bracket group 2 also include multiple top support cylinders 13, the top support cylinders are installed on the top surfaces of the first self-moving bracket and the second self-moving bracket, and the top support cylinders are connected to the cylinder control valves.

[0052] The first support group 1 and the second support group 2 also include a plurality of side support cylinders 14, which are installed on the left and right sides of the first self-moving support 11 and the second self-moving support 21. The side support cylinders 14 are connected to the cylinder control valve 16, and specifically include an upper side support cylinder 141 and a lower side support cylinder 142, wherein the lower side support cylinder 142 is an integrated structure with the front support cylinder 113 and the rear support cylinder 114, and the upper side support cylinder 141 is installed on each longitudinal beam, and the top and the periphery are supported by the top support cylinder and the side support cylinder. A 2000×2000mm soft protective net can be installed between adjacent side support cylinders 14 to prevent side rock from falling off and injuring people, and is fixed to the side wall through the side cylinder. When the moving cylinder 115 moves, it can move forward with the first self-moving support 11 and the second self-moving support 21, and can continue to be supported and fixed on the side wall after being stabilized, so as to realize temporary support of the side.

[0053] like Figure 1 , Figure 4 , Figure 6 As shown, the anchor net upper mechanism 12 comprises an anchor net flipping cylinder 121, an anchor net angle cylinder 122, and an anchor net top plate 123. The two ends of the anchor net angle cylinder are respectively hinged to the front end of the first self-moving bracket and one side of the connecting plate, and the two ends of the anchor net flipping cylinder are respectively hinged to the other side of the connecting plate and the anchor net top plate. The anchor net upper mechanism 12 is installed at the front of the bracket, and the anchor net flipping cylinder 121 and the anchor net angle cylinder 122 are used to complete the automatic mounting of the anchor net, which is convenient and can realize continuous operation.

[0054] like Figure 1 , Figure 4 , Figure 7 As shown, the anchor drill unit 22 includes an anchor drill support frame 221, an anchor drill 222, and a lifting cylinder 223. The top of the anchor drill support frame is hinged below the second self-moving support 21. The anchor drill is vertically fixed on the anchor drill support frame, and the anchor drill is connected to the drilling rig operating valve group. One end of the lifting cylinder 223 is hinged on the second self-moving support 21, and the other end of the lifting cylinder 223 is hinged on the anchor drill support frame 221. When the tunnel boring machine needs to exit the support group, the anchor drill group lifting cylinder 223 can be operated to lift a certain height to make room for the tunnel boring machine to pass safely.

[0055] like Figure 8 The anchor drilling rig 222 can move horizontally on a vertical plane. The anchor drilling rig 222 is installed on the anchor drilling rig support frame 221 through an angle adjustment plate 224, which can achieve an inclination angle of ±20°. The anchor drilling rig 222 is stabilized on the frame platform without manual assistance for straightening. The valve group operated by the drill rod at a distance can realize the joint construction of multiple anchor drilling rigs 222.

[0056] The two groups of anchor drilling machine parts 22 are symmetrically installed at the two ends of the second self-moving support 21.

[0057] The present invention installs different equipment on different support groups, such as installing an anchor net mechanism 12 on the first support group 1 and installing an anchor drill rig 222 on the second support group 2. In addition, a belt conveyor, a dust removal fan, etc. can also be installed to achieve different tasks and selectively perform multiple tasks to achieve excavation, support, ventilation, and waste removal, thereby improving efficiency.

[0058] Specifically, for example, in the design of the delivery system, after the gangue falls out of the kiln by the multi-purpose excavator, continuous gangue discharge is achieved through the first and second transport belts to the chute. Among them, the second belt should use a self-moving machine tail, and the length of the second transport should be more than 25m to meet the operating space of the permanent support construction of the entire support system.

[0059] Furthermore, considering the dust generated during continuous kiln cutting, the harsh working environment and extremely poor visibility will not only affect the physical and mental health of employees, but also make it impossible to perform other operations. Therefore, it is necessary to optimize the local ventilation of the front. It is mainly to use one or two dust removal fans to realize the front suction ventilation. The rear is still using forced ventilation. The air outlet of the rear duct is about 20m to the front, and the duct of the dust removal fan is 10-15m apart. The fan selection should be no less than 80% of the total air volume of the rear forced ventilation. The duct and fan of the dust removal fan are connected to the first and second self-moving brackets and fixed on both sides of the self-moving bracket. The duct adopts a rectangular design, which is retractable and easy to fix and place. Two full-section atomizing sprays are set 3-5m in front and behind the dust removal fan to completely disconnect the kiln cutting dust-producing area and the rear space to ensure a good environment for the concentrated working area of ​​personnel.

[0060] Embodiment 2:

[0061] like Fig. 9 As shown, the difference from the above-mentioned embodiment 1 is that a third bracket group 3 is added between the first bracket group 1 and the second bracket group 2.

[0062] The third bracket group 3 also includes a third self-moving bracket, which is the same as the first self-moving bracket. Required equipment can be installed on the third self-moving bracket as needed.

[0063] Finally, the first bracket group 1 is mainly used for the protection of the tunnel boring machine and the front anchor net mechanism, as well as the placement of dust removal fans and other equipment. The second bracket group 2 is the follow-up anchor drilling rig support structure, and the third bracket group 3 is mainly used for the protection of the second conveyor belt at the rear of the tunnel boring machine to realize the automatic support function. In actual use, the first bracket group is 8.5m long and the second and third bracket groups are 7.1m long. They can also be adjusted according to actual conditions. The width is generally 4.7-5m according to the width of the tunnel, and the height is 2.5-3m. After the top support cylinder is raised, the total height is not less than 4m.

[0064] The present invention also provides a method for advanced support of continuous construction of comprehensive tunnel excavation, which uses the above-mentioned advanced support system for continuous construction of comprehensive tunnel excavation, and specifically comprises the following steps:

[0065] S01: After the tunnel boring machine completes the cutting work, the upper anchor net mechanism 12 realizes the laying of the top anchor net through the anchor net flipping cylinder 121 and the anchor net deflection cylinder 122;

[0066] S02: The front support cylinder 113 and the side support cylinder 14 of the first self-moving support 11 continue to support the periphery, and the rear support cylinder 114 is retracted through the cylinder control valve 116. As a result, the entire rear support frame 112 falls on the front support crossbeam 1111 of the front support support 111. The cylinder control valve 116 is used to operate the shifting cylinder 115 to pull the rear support frame 112 forward. After moving into position, the rear support cylinder group and the side support cylinder 14 are lowered for support through the cylinder control valve 116. Then, the front support cylinder group is retracted through the cylinder control valve 116. The shifting cylinder 115 is operated to drive the front support frame 111 forward. After moving into position, the front support cylinder group is lowered for support, completing a frame stepping movement process.

[0067] S03: The movement process of the second self-moving bracket 2 and the third self-moving bracket 3 is the same as that of the first self-moving bracket 1. If there are multiple self-moving brackets, the movement process is the same;

[0068] S04: Use the anchor drilling rig unit 22 to carry out construction; through the remote drilling rig operating valve group, four drilling rigs can be constructed at the same time, reducing labor intensity and increasing safety factor.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The tunnel comprehensive excavation continuous construction advance support system is characterized by: It comprises a first bracket group and a second bracket group which are arranged in series, wherein the first bracket group comprises a first self-moving bracket, and the second bracket group comprises a second self-moving bracket; The first self-moving support and the second self-moving support both include a front support frame and a rear support frame capable of relative sliding and support, a front support cylinder group, a rear support cylinder group, a shifting cylinder, and a cylinder control valve. The front support cylinder group is installed at the bottom of the front support frame, and the rear support cylinder group is installed at the bottom of the rear support frame. A shifting cylinder for controlling the front support frame and the rear support frame to slide relative to each other is provided between the front support frame and the rear support frame. The front support cylinder group, the rear support cylinder group, and the shifting cylinder are all connected to the cylinder control valve. It also includes a plurality of top support cylinders, which are installed on the top surfaces of the first self-moving bracket and the second self-moving bracket, and the top support cylinders are connected to the cylinder control valve; it also includes a plurality of side support cylinders, which are installed on the sides of the first self-moving bracket and the second self-moving bracket, and the side support cylinders are connected to the cylinder control valve, and a soft protective net is installed between adjacent side support cylinders; The first bracket group also includes an upper anchor net mechanism, which is installed at the end of the first self-moving bracket away from the second bracket group; the upper anchor net mechanism includes a connecting plate, an anchor net turning cylinder, an anchor net angle cylinder, and an anchor net top plate, the two ends of the anchor net angle cylinder are respectively hinged to the front end of the first self-moving bracket and one side of the connecting plate, and the two ends of the anchor net turning cylinder are respectively hinged to the other side of the connecting plate and the anchor net top plate; The second bracket group also includes at least one group of anchor drilling rig parts, which are vertically installed at the end of the second movable bracket; the anchor drilling rig part includes an anchor drilling rig support frame and an anchor drilling rig, the anchor drilling rig support frame is installed below the second self-moving bracket, and the anchor drilling rig is vertically fixedly installed on the anchor drilling rig support frame; The anchor drill moves horizontally on a vertical plane, and the anchor drill is installed on an anchor drill support frame through an angle adjustment plate.

2. The tunnel comprehensive excavation continuous construction advance support system according to claim 1 is characterized in that: The front support frame includes at least two front support cross beams, at least one front support longitudinal beam, and at least two front support vertical beams. The front support cross beams are arranged in parallel, and the two ends of the front support longitudinal beams are connected to the bottom of the front support cross beams through the front support vertical beams; the rear support frame includes at least two rear support cross beams, at least one rear support longitudinal beam, and at least two rear support vertical beams. The rear support cross beams are arranged in parallel, and the two ends of the rear support longitudinal beams are connected to the bottom of the rear support cross beams through the rear support vertical beams; the front support cross beam and the rear support cross beam are arranged side by side, the front support longitudinal beam and the rear support longitudinal beam are arranged at intervals, and the two ends of the front support longitudinal beam extend out of the side of the rear support cross beam, and the two ends of the moving cylinder are connected between the adjacent front support longitudinal beams and the rear support longitudinal beams.

3. The tunnel comprehensive excavation continuous construction advance support system according to claim 1 is characterized in that: It also includes a lifting cylinder. The top of the anchor drilling rig support frame is hinged below the second self-moving support frame. One end of the lifting cylinder is hinged on the second self-moving support frame, and the other end of the lifting cylinder is hinged on the anchor drilling rig support frame.

4. The method for advanced support of continuous construction of comprehensive tunnel excavation is characterized by: The use of the tunnel comprehensive excavation continuous construction advance support system according to any one of claims 1 to 3 above comprises the following steps: S01: After the tunnel boring machine completes the cutting work, the upper anchor net mechanism realizes the laying of the top anchor net; S02: The front support cylinder group of the first self-moving support continues to support the periphery, and the rear support cylinder group is retracted through the cylinder control valve, and the stepping cylinder is operated through the cylinder control valve to drive the rear support frame forward. After moving into place, the rear support cylinder group is lowered through the cylinder control valve for support, and then the front support cylinder group is retracted through the cylinder control valve, and the stepping cylinder is operated to drive the front support frame forward. After moving into place, the front support cylinder group is lowered for support, completing a frame stepping movement process; S03: The moving process of the second self-moving support is the same as that of the first self-moving support; S04: Use anchor drilling rig to carry out construction.

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