High-steep terrain high-strength hard rock water milling drill splitting tunnel excavation system and construction method

Abstract

The invention relates to a high-steep terrain high-strength hard rock water abrasive drill splitting tunnel excavation system and a construction method. The construction method comprises the following construction steps: step 1, construction preparation; step 2, drilling construction of peripheral separation holes; thirdly, drilling construction of the splitting holes is conducted; 4, optimized layered splitting excavation construction of the splitting holes is carried out; step 5, carrying out rapid detection construction on back break; and 6, construction is completed, and after inspection and acceptance are qualified, related equipment is returned. The invention belongs to the field of tunnel engineering construction, not only can improve the moving convenience of the water drill, the splitting hole pitch and drilling precision, the back break construction precision and the surrounding rock stability, but also can improve the detection efficiency, meanwhile, the construction is safe and environment-friendly, the labor cost is saved, the construction efficiency is high, and better technical and economic benefits can be obtained when the device is applied to actual engineering.

Description

Technical Field

[0001] This invention belongs to the field of tunnel engineering and is applicable to the construction of water-jet splitting tunnels in steep terrain and high-strength hard rock, especially in areas with high requirements for the protection of the surrounding environment. Background Technology

[0002] With the rapid development of infrastructure, the number and complexity of tunnel construction projects are constantly increasing. Especially in modern urban environments, the conflict between underground engineering and the surrounding surface environment has become a pressing technical challenge. In tunnel construction, the drill-and-blast method, as the most commonly used and widespread method, dominates due to its economic, simple, and reliable characteristics. However, the application of the drill-and-blast method also brings a series of problems, particularly when there are other sensitive structures around the tunnel. Existing non-blasting excavation technologies are slow and inefficient, directly affecting the overall project schedule. Furthermore, existing tunnel excavation construction is accompanied by serious hazards such as dust, flying debris, vibration, and air shock waves, especially near the tunnel entrance in steep terrain, impacting surrounding buildings and structures. Meanwhile, protective canopy technology has limited dust and noise reduction effects, and its design, transportation, and installation are cumbersome, increasing construction complexity and cost. Moreover, over-excavation and under-excavation during tunnel excavation not only affect project progress and cost but also impact tunnel quality and create safety hazards.

[0003] In view of this, in order to address the shortcomings of previous tunnel excavation construction in steep terrain, there is an urgent need for a new construction method for high-strength hard rock water-jetting splitting tunnel excavation system in steep terrain to improve construction quality and efficiency and ensure the safety and reliability of the construction process. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method for a water-jet drilling splitting tunnel excavation system for high-steep terrain and high-strength hard rock, which can effectively improve the mobility of water-jet drills, the spacing and drilling accuracy of splitting holes, the accuracy of over-excavation and under-excavation, the stability of surrounding rock, and also improve detection efficiency. At the same time, it is safe and environmentally friendly to construct, saves labor costs, has high construction efficiency, is convenient to construct and simple to operate.

[0005] To achieve the above-mentioned technology, the present invention adopts the following technical solution: a construction method for a water-jetting and splitting tunnel excavation system for high-steep terrain and high-strength hard rock, comprising the following steps:

[0006] Step 1: Construction Preparation; Step 2, Drilling of peripheral separation holes: After measuring and positioning the separation holes, install the water-cooled drill quick-moving device on the suspended work platform, and carry out the drilling of the separation holes through the water-cooled drill quick-moving device on the suspended work platform. Step 3: Split hole drilling construction: After measurement and positioning, install multiple water-jet drilling rigs for synchronous construction. Use multiple water-jet drilling rigs to drill holes in the area on the mountain located inside the tunnel outline to form split holes. Step 4: Optimize the layered splitting excavation construction of the splitting holes; Step 5: Rapid detection and construction of over- and under-excavation; Step Six: Construction Completion: After inspection and acceptance, the relevant equipment is removed from the site.

[0007] As a preferred option, the specific method for step one is as follows: conduct a comprehensive geological exploration and environmental impact assessment to provide detailed data support for the formulation of the construction plan, while providing technical briefings to technical personnel and bringing relevant materials and equipment to the site.

[0008] Preferably, in step two, when installing the rapid movement device for the water-jet drill on the suspended work platform, the slide rail is set on the mountainside, the moving base is placed inside the slide rail, one end of the horizontal support rod is fixed to the moving base, and the other end is connected to the automatic lifting rod. The rolling ball seat is placed between the moving base and the slide rail, the automatic lifting rod is fixed to the horizontal support rod, the suspended platform is fixed to the two automatic lifting rods, the water-jet drill is set on the suspended platform, one end of the reinforcing fixing rod is fixed to the suspended platform, and the other end is fixed to the automatic lifting rod. The water-jet drill is arranged on the suspended platform, and the automatic lifting rod controls the up and down movement of the suspended platform. The horizontal movement of the suspended platform is achieved through the cooperation between the slide rail and the moving base. The water-jet drill on the suspended platform is used to drill the separation holes sequentially along the tunnel outline.

[0009] As a preferred option, in step three, the installation method of the mobile trolley for simultaneous construction of multiple water-grinding drills is as follows: The roller movement track is set on the ground, the rollers are placed at the bottom of the column base plate, and the rollers are positioned within the roller movement track so that they can move along the track; the trolley columns are placed on the column base plate, and the trolley platform is set on four trolley columns. The trolley platform is divided into three water-grinding drill placement areas: area one, area two, and area three. Water-grinding drills are installed in these areas; the two ends of the trolley arch frame are fixed to the trolley platform, guardrails are installed around the trolley platform, and reinforcing connecting steel pipes are installed between two adjacent trolley columns and between two trolley arch frames; after the installation of the mobile trolley for simultaneous construction of multiple water-grinding drills is completed, multiple water-grinding drills on the trolley platform simultaneously drill holes in the area inside the tunnel outline on the mountainside to form split holes.

[0010] As a preferred method, the specific method for step four is as follows: Divide the area inside the tunnel outline into five regions: optimized layer one, optimized layer two, optimized layer three, optimized layer four, and optimized layer five, using a layering line. Optimized layers one, two, three, four, and five are arranged sequentially from top to bottom. Splitting holes are arranged in optimized layers one, two, three, and five, but no splitting holes are arranged in optimized layer four. Use a hydraulic rock splitter to split the rock mass layer by layer. In the order of optimized layer five, optimized layer one, optimized layer three, and optimized layer two, use a hydraulic rock splitter to split the splitting holes in each region from left to right. Optimized layer four will split itself due to the pressure of the rock in optimized layers three and five. Then, excavate and clean the split rock mass layer by layer.

[0011] As a preferred option, the specific method for step five is as follows: Determine the location of the measuring point and install the tunnel measuring point optimization over- and under-excavation rapid detection device. The installation method of the tunnel measuring point optimization over- and under-excavation rapid detection device is as follows: Set the casters at the bottom of the caster fixing plate, set the caster brake pads on one side of the casters, set the lower end of the total station bracket on the caster fixing plate, set the top fixing platform of the total station on the upper end of the three total station brackets, connect the top of the inclined reinforcement support to the total station bracket, and set the lower end of the inclined reinforcement support with a conical fixing head. Install the total station on the top fixing platform of the tunnel measuring point optimization over- and under-excavation rapid detection device, move the total station to the target position by moving the casters, and then install three inclined reinforcement supports on the three total station brackets respectively. Quickly stabilize the tunnel measuring point optimization over- and under-excavation rapid detection device by using the inclined reinforcement supports. Use the total station to determine whether there is over- or under-excavation and the relevant location where it occurs.

[0012] The high-steep terrain high-strength hard rock water-jet splitting tunnel excavation system was constructed using the construction method of the high-steep terrain high-strength hard rock water-jet splitting tunnel excavation system.

[0013] This invention has the following characteristics and beneficial effects: (1) The water-grinding drill is moved quickly using a suspended working platform to carry out drilling around the perimeter, which enables the water-grinding drill to move flexibly and be positioned precisely, greatly improving construction efficiency and hole position accuracy; the stable suspended working platform and reinforced fixed structure effectively ensure the safety of construction personnel and equipment, while accurately defining the excavation boundary.

[0014] (2) Multiple water-grinding drills are used for synchronous construction on mobile trolleys, which significantly improves drilling efficiency. The trolley's stable overall structure design ensures drilling accuracy when multiple devices are operating simultaneously. The surrounding guardrails protect personnel safety, and the evenly distributed splitting holes provide strong support for subsequent rock splitting effects.

[0015] (3) Optimize the splitting construction by optimizing the layered splitting excavation structure through splitting holes to reduce safety risks. Optimizing the splitting sequence can save construction costs and reduce rock mass disturbance. Hydraulic splitting is green and environmentally friendly, with no blasting pollution. Layer-by-layer excavation and cleaning of broken rock mass can ensure construction quality and orderly progress of construction.

[0016] (4) The tunnel measuring point optimization over-excavation and under-excavation rapid detection device is used for construction. The universal wheels enable the total station to move and position quickly, and the scale helps the support to stabilize quickly, improving the detection accuracy and efficiency. It can detect over-excavation and under-excavation problems and their specific locations in a timely manner, which is convenient for timely rectification. It is suitable for complex construction environments and does not affect the overall construction progress. Attached Figure Description

[0017] Figure 1 This is a front view of the structure of the rapid movement device for the water-cooled drill on the suspended work platform; Figure 2 This is a right view of the structure of the rapid movement device for the water-cooled drill on the suspended work platform; Figure 3 This is a front view of the structure of a mobile trolley for simultaneous construction of multiple water-cooled drills; Figure 4 This is a right view of the structure of a mobile trolley for simultaneous construction of multiple water-cooled drills; Figure 5 This is a schematic diagram of the optimized layered splitting excavation structure for splitting holes; Figure 6 This is a schematic diagram of the structure of a rapid detection device for over- and under-excavation of tunnel measuring points.

[0018] In the diagram: 1-Ground, 2-Tunnel outline, 3-Separation hole, 4-Mountain, 5-Suspension platform, 6-Water-cooled drill, 7-Automatic lifting rod, 8-Slide rail, 9-Moving base, 10-Horizontal support rod, 11-Rolling ball seat, 12-Reinforcing fixing rod, 13-Roller moving track, 14-Roller, 15-Column pad, 16-Trolley column, 17-Trolley platform, 18-Water-cooled drill placement area 1, 19-Water-cooled drill placement area 2, 20-Water-cooled drill placement area 3 21-Trolley arch frame, 22-Guardrail, 23-Reinforced connecting steel pipe, 24-Split hole, 25-Dial line, 26-Optimized tier 1, 27-Optimized tier 2, 28-Optimized tier 3, 29-Optimized tier 4, 30-Optimized tier 5, 31-Wheel caster, 32-Wheel caster fixing plate, 33-Wheel caster brake pad, 34-Total station top fixing platform, 35-Total station bracket, 36-Scale ruler, 37-Diagonal reinforcement support, 38-Conical fixing head. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0020] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0021] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0022] Figure 1 This is a front view of the structure of the rapid traversing device for the suspended work platform water drill. Figure 2 This is a right view of the structure of the rapid traversing device for the suspended work platform water drill. Figure 3 This is a front view of the structure of a mobile trolley for simultaneous construction of multiple water-jet drills. Figure 4 The right view shows the structure of a mobile trolley for simultaneous construction of multiple water-jet drills. Figure 5 This is a schematic diagram of the optimized layered splitting excavation structure for splitting holes. Figure 6 This is a schematic diagram of the structure of a rapid detection device for over- and under-excavation of tunnel measuring points.

[0023] like Figures 1 to 6 As shown, the water-jet drilling system for excavating tunnels in steep terrain and high-strength hard rock includes a suspended operating platform, a rapid water-jet drilling device, a multi-water-jet drilling trolley for synchronous construction, an optimized layered splitting excavation structure for splitting holes, and a rapid detection device for over- and under-excavation of tunnel measuring points.

[0024] The rapid traversing device for the suspended platform water-grinding drill includes a suspended platform 5, a water-grinding drill 6, an automatic lifting rod 7, a slide rail 8, a movable base 9, a horizontal support rod 10, a rolling ball seat 11, and a reinforcing fixing rod 12. The slide rail 8 is mounted on the mountain 4, and the movable base 9 is mounted on the slide rail 8 and can move along the slide rail 8. One end of the horizontal support rod 10 is fixed to the movable base 9, and the other end is connected to the automatic lifting rod 7. The rolling ball seat 11 is located between the movable base 9 and the slide rail 8 to reduce the friction between the movable base 9 and the slide rail 8. The upper end of the automatic lifting rod 7 is fixed to the horizontal support rod 10. The suspended platform 5 is fixed to the two automatic lifting rods 7. The water-grinding drill 6 is mounted on the suspended platform 5. One end of the reinforcing fixing rod 12 is fixed to the suspended platform 5, and the other end is fixed to the automatic lifting rod 7.

[0025] As an improved specific implementation, it also includes multiple water-grinding drill synchronous construction mobile trolleys. Each water-grinding drill synchronous construction mobile trolley includes a roller moving track 13, rollers 14, column base plate 15, trolley column 16, trolley platform 17, water-grinding drill placement area 18, water-grinding drill placement area 29, water-grinding drill placement area 30, trolley arch frame 21, guardrail 22, and reinforcing connecting steel pipe 23. The roller moving track 13 is set on the ground 1, and the rollers 14 are set at the bottom of the column base plate 15 and located on the roller moving track. In track 13, rollers 14 can move along roller movement track 13. Trolley columns 16 are set on column pads 15. Trolley platform 17 is set on the upper end of four trolley columns 16. Water drill rest area 18, water drill rest area 29, and water drill rest area 3 20 are set on trolley platform 17. Trolley arch frame 21 is fixed at both ends on trolley platform 17. Guardrail 22 is set around trolley platform 17. Reinforcing connecting steel pipe 23 is set between two adjacent trolley columns 16 or between two trolley arch frames 21.

[0026] As an improved specific implementation, it also includes a split-hole optimized layered splitting excavation structure, which includes split holes 24, layer lines 25, optimized layer one 26, optimized layer two 27, optimized layer three 28, optimized layer four 29, and optimized layer five 30. The split holes 24 are located in the area inside the tunnel outline 2, and the layer lines 25 divide the area inside the tunnel outline 2 into five areas: optimized layer one 26, optimized layer two 27, optimized layer three 28, optimized layer four 29, and optimized layer five 30.

[0027] As an improved specific implementation, it also includes a rapid detection device for over- and under-excavation of tunnel measuring points. The rapid detection device for over- and under-excavation of tunnel measuring points includes casters 31, caster fixing plates 32, caster brake pads 33, a total station top fixing platform 34, a total station bracket 35, a scale 36, an inclined reinforcement support 37, and a conical fixing head 38. The casters 31 are located at the bottom of the caster fixing plates 32, the caster brake pads 33 are located on one side of the casters 31, the lower ends of the three total station brackets 35 are respectively located on the three caster fixing plates 32, the total station top fixing platform 34 is located at the upper end of the three total station brackets 35, the total station brackets 35 are equipped with scales 36, the top of the inclined reinforcement support 37 is connected to the total station bracket 35, and the conical fixing head 38 is located at the lower end of the inclined reinforcement support 37.

[0028] As an improved specific implementation, it also includes a tunnel outline 2 and separation holes 3, with the separation holes 3 disposed on the tunnel outline 2 and arranged sequentially along the tunnel outline 2.

[0029] The construction method for a water-jetting and splitting tunnel excavation system for high-steep terrain and high-strength hard rock includes the following steps: Step 1: Construction Preparation: Conduct comprehensive geological exploration and environmental impact assessment to provide detailed data support for the formulation of the construction plan. At the same time, provide technical briefings to technical personnel and bring relevant materials and equipment to the site.

[0030] Step 2: Drilling of the peripheral separation hole: After measuring and positioning the separation hole 3, install the rapid traversal device for the suspended work platform water-grinding drill. Drill the separation hole using this device. When installing the device, set the slide rail 8 on the mountain 4, place the moving base 9 inside the slide rail 8, fix one end of the horizontal support rod 10 to the moving base 9, and connect the other end to the automatic lifting rod 7. Place the rolling ball seat 11 between the moving base 9 and the slide rail 8, and then fix the automatic lifting rod 7... The suspension platform 5 is fixed on the horizontal support rod 10 and then fixed on the two automatic lifting rods 7. The water drill 6 is set on the suspension platform 5. One end of the reinforcing rod 12 is fixed on the suspension platform 5 and the other end is fixed on the automatic lifting rod 7. The water drill 6 is arranged on the suspension platform 5 and the suspension platform 5 is moved up and down by the automatic lifting rod 7. The horizontal movement of the suspension platform 5 is achieved by the cooperation between the slide rail 8 and the moving base 9. The water drill 6 on the suspension platform 5 is used to drill the separation hole 3 along the tunnel outline 2 in sequence.

[0031] Step 3, Splitting Hole Drilling: After measurement and positioning, install multiple water-grinding drill synchronous construction trolleys. The installation method for multiple water-grinding drill synchronous construction trolleys is as follows: Set the roller moving track 13 on the ground 1, set the rollers 14 at the bottom of the column pad 15, and place the rollers 14 in the roller moving track 13 so that the rollers 14 can move along the roller moving track 13; set the trolley columns 16 on the column pad 15, and set the trolley platform 17 on the four trolley columns 16. The trolley platform 17 is equipped with water-grinding drill rest area 18, water-grinding drill rest area 2, and water... The grinding drill is placed in Zone 3 20, and water-grinding drills 6 are installed in Zone 1 18, Zone 2 19, and Zone 3 20. The two ends of the trolley arch frame 21 are fixed on the trolley platform 17, the guardrail 22 is set around the trolley platform 17, and the reinforcing connecting steel pipe 23 is installed between two adjacent trolley columns 16 and between two trolley arch frames 21. After the installation of the mobile trolley with multiple water-grinding drills, the multiple water-grinding drills 6 on the trolley platform 17 are used to drill holes in the area inside the tunnel outline 2 on the mountain 4 to form split holes 24.

[0032] Step 4: Optimized Layered Splitting Excavation Construction: The area inside the tunnel outline 2 is divided into five zones: Optimized Layer 1 (26), Optimized Layer 2 (27), Optimized Layer 3 (28), Optimized Layer 4 (29), and Optimized Layer 5 (30), using layer line 25. Optimized Layer 1 (26), Optimized Layer 2 (27), Optimized Layer 3 (28), Optimized Layer 4 (29), and Optimized Layer 5 (30) are arranged sequentially from top to bottom. Among these, Optimized Layer 1 (26), Optimized Layer 2 (27), Optimized Layer 3 (28), and Optimized Layer 5 (30) are... Splitting holes 24 are arranged in all layers 0, but no splitting holes 24 are arranged in optimized layer 4 29. The rock mass is split in layers using a hydraulic splitting machine. In the order of optimized layer 5 30, optimized layer 1 26, optimized layer 3 28, and optimized layer 2 27, the splitting holes 24 in each area are split from left to right using a hydraulic splitting rod. The optimized layer 4 29 area will split on its own due to the pressure of the rocks in optimized layer 3 28 and optimized layer 5 30 areas. Then, the split rock mass is excavated and cleaned layer by layer.

[0033] Step 5: Rapid Detection of Over- and Under-excavation: Determine the location of the measuring points and install the tunnel measuring point optimization rapid detection device for over- and under-excavation. The installation method of the tunnel measuring point optimization rapid detection device for over- and under-excavation is as follows: Set the caster wheel 31 at the bottom of the caster wheel fixing plate 32, set the caster wheel brake pad 33 on one side of the caster wheel 31, set the lower end of the total station bracket 35 on the caster wheel fixing plate 32, set the top fixing platform 34 of the total station on the upper end of the three total station brackets 35, and connect the top of the inclined reinforcement support 37 to the total station bracket 35. The lower end of the inclined reinforcement support 37 is provided with a conical fixing head 38. The total station is installed on the top fixing platform 34 of the total station of the tunnel measuring point optimization over- and under-excavation rapid detection device. The total station is moved to the target position by the movement of the casters. Then, the three inclined reinforcement supports 37 are quickly installed on the three total station supports 35 respectively by the scale 36 on the total station support 35. The inclined reinforcement support 37 is used to quickly stabilize the tunnel measuring point optimization over- and under-excavation rapid detection device. The total station is used to determine whether there is over- or under-excavation and the relevant location.

[0034] Step Six: Construction Completion: After inspection and acceptance, the relevant equipment is removed from the site.

[0035] This invention is not limited to the preferred embodiments described above. Anyone can derive other products in various forms under the guidance of this invention. However, regardless of any changes in shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this invention.

Claims

1. A construction method for a water-jetting and splitting tunnel excavation system for high-steep terrain and high-strength hard rock, characterized in that, Includes the following steps: Step 1: Construction Preparation; Step 2, drilling construction of peripheral separation holes: After measuring and positioning the separation hole (3), install the water-grinding drill quick movement device on the suspended work platform, and carry out the drilling construction of the separation hole through the water-grinding drill quick movement device on the suspended work platform; Step 3: Split hole drilling construction: After measurement and positioning, install multiple water-grinding drill synchronous construction mobile trolleys, and use multiple water-grinding drill synchronous construction mobile trolleys to drill holes in the area on the mountain (4) located inside the tunnel outline (2) to form split holes (24). Step 4: Optimize the layered splitting excavation construction of the splitting holes; Step 5: Rapid detection and construction of over- and under-excavation; Step Six: Construction Completion: After inspection and acceptance, the relevant equipment is removed from the site.

2. The construction method of the high-steep terrain, high-strength hard rock water-jetting drilling and splitting tunnel excavation system according to claim 1, characterized in that, The specific methods for step one are as follows: conduct comprehensive geological exploration and environmental impact assessment to provide detailed data support for the formulation of the construction plan, and at the same time, provide technical briefings to technical personnel and bring relevant materials and equipment to the site.

3. The construction method of the high-steep terrain, high-strength hard rock water-jetting drilling and splitting tunnel excavation system according to claim 1, characterized in that, In step two, when installing the rapid movement device for the water drill on the suspended work platform, the slide rail (8) is set on the mountain (4), the moving base (9) is set inside the slide rail (8), one end of the horizontal support rod (10) is fixed on the moving base (9), and the other end is connected to the automatic lifting rod (7). The rolling ball seat (11) is set between the moving base (9) and the slide rail (8). The automatic lifting rod (7) is fixed on the horizontal support rod (10), and the suspended platform (5) is fixed on the two automatic lifting rods (7). The water drill is then moved... (6) Set on the suspended platform (5), fix one end of the reinforcing rod (12) on the suspended platform (5) and the other end on the automatic lifting rod (7); the water drill (6) is arranged on the suspended platform (5) and the suspended platform (5) is moved up and down by the automatic lifting rod (7). The suspended platform (5) is moved horizontally by the cooperation between the slide rail (8) and the moving base (9). The water drill (6) on the suspended platform (5) is used to drill the separation hole (3) along the tunnel outline (2).

4. The construction method of the high-steep terrain, high-strength hard rock water-jetting drilling and splitting tunnel excavation system according to claim 1, characterized in that, In step three, the installation method of the mobile trolley for simultaneous construction of multiple water-grinding drills is as follows: the roller moving track (13) is set on the ground (1), the roller (14) is set at the bottom of the column pad (15), and the roller (14) is placed in the roller moving track (13) so that the roller (14) can move along the roller moving track (13); the trolley column (16) is set on the column pad (15), the trolley platform (17) is set on the four trolley columns (16), and the trolley platform (17) is set with water-grinding drill placement area one (18), water-grinding drill placement area two (19), and water-grinding drill placement area three (20). Install water-grinding drills (6) in Zone 1 (18), Zone 2 (19), and Zone 3 (20); fix the two ends of the trolley arch frame (21) on the trolley platform (17), set the guardrail (22) around the trolley platform (17), and install the reinforcing connecting steel pipe (23) between two adjacent trolley columns (16) and between two trolley arch frames (21); after the installation of the mobile trolley with multiple water-grinding drills, drill holes in the area inside the tunnel outline (2) on the mountain (4) simultaneously using multiple water-grinding drills (6) on the trolley platform (17) to form split holes (24).

5. The construction method of the high-steep terrain, high-strength hard rock water-jetting drilling and splitting tunnel excavation system according to claim 1, characterized in that, The specific method for step four is as follows: Divide the area inside the tunnel outline (2) into five regions: optimization layer one (26), optimization layer two (27), optimization layer three (28), optimization layer four (29), and optimization layer five (30) by layer line (25). Optimization layer one (26), optimization layer two (27), optimization layer three (28), optimization layer four (29), and optimization layer five (30) are arranged sequentially from top to bottom. Among them, optimization layer one (26), optimization layer two (27), optimization layer three (28), and optimization layer five (30) are arranged sequentially from top to bottom. Splitting holes (24) are arranged in all of them, but no splitting holes (24) are arranged in the fourth layer (29). The rock mass is split in layers by using a hydraulic splitter. The splitting holes (24) in each area are split from left to right in the order of the fifth layer (30), the first layer (26), the third layer (28), and the second layer (27). The fourth layer (29) area will be split by itself due to the pressure of the rocks in the third layer (28) and the fifth layer (30). Then, the split rock mass is excavated and cleaned layer by layer.

6. The construction method of the high-steep terrain, high-strength hard rock water-jetting drilling and splitting tunnel excavation system according to claim 1, characterized in that, The specific method for step five is as follows: Determine the location of the measuring point, install the tunnel measuring point optimization over-excavation and under-excavation rapid detection device, and the installation method of the tunnel measuring point optimization over-excavation and under-excavation rapid detection device is as follows: Set the universal wheel (31) at the bottom of the universal wheel fixing plate (32), set the universal wheel brake pad (33) on one side of the universal wheel (31), set the lower end of the total station bracket (35) on the universal wheel fixing plate (32), set the top fixing platform (34) of the total station at the upper end of the three total station brackets (35), and connect the top of the inclined reinforcement support (37) On the total station bracket (35), a conical fixing head (38) is provided at the lower end of the inclined reinforcement support (37). The total station is installed on the fixed platform (34) on the top of the total station of the tunnel measuring point optimization over- and under-excavation rapid detection device. The total station is moved to the target position by the movement of the casters. Then, three inclined reinforcement supports (37) are installed on the three total station brackets (35) respectively. The tunnel measuring point optimization over- and under-excavation rapid detection device is quickly stabilized by the inclined reinforcement supports (37). The total station is used to determine whether there is over- or under-excavation and the relevant location where it occurs.

7. A water-jetting and splitting tunnel excavation system for high-steep terrain and high-strength hard rock, characterized in that... The tunnel is constructed using the construction method of the high-steep terrain, high-strength hard rock water-jetting and splitting tunnel excavation system as described in any one of claims 1-6.

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