Earthwork construction device for inverted siphon construction

Abstract

The earthwork construction device for inverted siphon construction comprises a carrier loader, a mounting arm is mounted on the carrier loader, a drill rod jacket and a drill rod base are mounted on the mounting arm and used for mounting a drill rod, a drill bit is arranged at the output end of the drill rod and penetrates through a gravel layer, a soil layer and a rock layer of a slope, and the drill rod jacket and the drill rod base are connected with the carrier loader. The drill rod drills a blast hole in a slope through a drill bit, a hoisting mechanism is installed on a drill rod base, the output end of the hoisting mechanism is detachably connected with an anti-collapse mechanism, and the anti-collapse mechanism is located at the top of the blast hole. The anti-collapse mechanism comprises a reaming seat, and the two side faces of the reaming seat are an inclined face and a straight face respectively. The top of the blast hole is expanded, the periphery of the top of the blast hole is compacted, and the protective material is poured to the periphery of the top of the blast hole, so that the periphery of the top of the blast hole can be prevented from collapsing into the blast hole due to soaking of underground water during drilling construction.

Description

Technical Field

[0001] The invention relates to the technical field of earthwork construction for inverted siphon engineering, and more specifically to an earthwork construction device for inverted siphon construction. Background Art

[0002] An inverted siphon is a special water conservancy facility. Its main function is to divert water from one water body through another water body or obstacle so that the water can continue to flow along the original river channel. It is often used in the construction of infrastructure such as bridges, roads, and railways. When these infrastructures cross rivers or other waterways, in order to maintain the continuity of the water flow, it is necessary to build an inverted siphon to maintain the continuity of the water flow. The working principle of the inverted siphon is based on the siphon effect in fluid mechanics. When the water flows through one end of the pipe and rises to a certain height, it will overcome the force of gravity, pass the highest point (the top of the pipe), and then descend to the other end and flow out. This process requires a certain height difference in the water levels at both ends of the pipe, and the sealing of the entire system must be good to ensure sufficient pressure for the water to pass through.

[0003] Due to the large geographical span of the inverted siphon project, there are slopes at the inlet and outlet sections of the project route. The inlet section is usually designed with an appropriate slope to ensure that the water can enter the pipeline smoothly, and the outlet section also needs to be designed with a certain slope to help the water flow out smoothly.

[0004] Earthwork excavation is a preliminary construction project for the inverted siphon project. The earthwork is soft and can be directly excavated by excavator. The stonework is hard and needs to be excavated by pre-splitting blasting. The earth and slag are then transported to the waste dump or designated location by dump trucks. Before pre-splitting blasting, blasting holes are arranged and opened by drilling machines.

[0005] In order to prevent debris such as gravel and powder in the blasting hole from affecting subsequent charging, the blasting hole needs to be cleaned. The common method is to use high-pressure airflow to remove debris such as gravel and powder in the blasting hole. The specific steps are to first insert the compressed air pipe into the bottom of the blasting hole, and then open the air valve to allow high-pressure gas to blow into the blasting hole through the pipe. Finally, the high-pressure airflow will blow the gravel and dust in the blasting hole out of the hole. For some special hole scenes, such as large and complex-shaped gravel in the blasting hole, a special hole cleaner can be used to clean it. The hole cleaner is usually a tool with a brush or scraper, which can be rotated or moved up and down to clean large and complex-shaped gravel in the blasting hole.

[0006] When the geological layers at the slope are gravel layer - soil layer - rock layer from top to bottom, the drill rod of the drilling machine needs to penetrate the rock layer in order to place explosives in the rock layer. When the rock layer is a water-containing rock layer, the groundwater in the water-containing rock layer will flow along the gaps into the blasting hole. Under the spinning action of the drill rod and the above-mentioned process of cleaning the debris in the blasting hole, the water in the water-containing rock layer in the blasting hole will be brought out and soaked into the soil layer. Under the combined action of the slope terrain around the blasting hole and the gravity of the gravel layer, the soaked soil layer slides down the slope. Therefore, after the drill rod of the drilling machine is pulled out of the blasting hole, at the soil layer position at the top of the blasting hole, the soil layer in the upper half of the hole top collapses into the hole, and the soil layer in the lower half of the hole top expands downwardly from the slope outside the hole, resulting in a "deformation and distortion" collapse and closure phenomenon at the top of the blasting hole, making it impossible to carry out subsequent charging work. Summary of the invention

[0007] The present invention provides an earthwork construction device for inverted siphon construction, and aims to solve the problem that: in the existing earthwork construction device for inverted siphon construction, water at the water-containing rock layer in the blasting hole is brought out and soaked into the soil layer, and the soaked soil layer slides down the slope, resulting in a "deformation and distortion" collapse and closure phenomenon at the top of the blasting hole.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an earthwork construction device for inverted siphon construction, comprising a carrier, a mounting arm is installed on the carrier, a drill pipe jacket and a drill pipe base are installed on the mounting arm, and the drill pipe jacket and the drill pipe base are used to install the drill pipe, a drill bit is provided at the output end of the drill pipe, and the drill bit penetrates the gravel layer, soil layer and rock layer of the slope, the drill pipe drills a blasting hole on the slope through the drill bit, a hoisting mechanism is installed on the drill pipe base, and the output end of the hoisting mechanism is detachably connected to the anti-vibration device. The invention discloses a collapse mechanism, and the anti-collapse mechanism is located at the top of the blasting hole; the anti-collapse mechanism comprises a hole expansion seat, the two side surfaces of the hole expansion seat are an inclined surface and a straight surface respectively, and the side of the straight surface of the hole expansion seat is arranged close to the drill bit, a pouring inlet is provided on the side of the hole expansion seat close to the inclined surface, a pouring inlet is provided on the top of the hole expansion seat, and a guide port is connected between the pouring inlet and the pouring outlet; when the hole expansion seat moves toward the bottom of the blasting hole, a protective expanded hole is formed at the top of the blasting hole through the inclined surface of the hole expansion seat, and the protective material is poured into the protective expanded hole through the pouring outlet.

[0009] In a preferred embodiment, the lifting mechanism includes a hanger, which is installed on the drill pipe base, and a guide ring seat is fixedly installed on the bottom of the hanger. A guide groove is opened inside the guide ring seat, and a rotary drive assembly is installed inside the guide groove. A support column is slidably provided on the guide groove, and the support column is located at the top end of the guide groove and is transmission-connected to the output end of the rotary drive assembly. The support column is driven to slide in an annular manner along the guide groove by the rotary drive assembly, and the reaming seat is installed at the bottom end of the support column.

[0010] In a preferred embodiment, a linear drive component 1 is fixedly installed on the bottom end of the support column, a slider is installed on the top of the reaming seat, and the slider is fixedly connected to the output end of the linear drive component 1. The linear drive component 1 drives the reaming seat to move laterally in a direction away from or close to the drill bit through the slider.

[0011] In a preferred embodiment, pump pipe seats are fixedly provided at both ends of the expansion seat, and the pump pipe seats are used to support the pump pipe, a T-shaped slot is provided on the side of the expansion seat close to the inclined surface, and the T-shaped slot is connected to the pouring outlet, a partition plate is slidably provided inside the T-shaped slot, and the partition plate is used to close the opening of the pouring outlet, the partition plate includes a wide plate, a narrow plate is fixedly provided on the wide plate, a positioning assembly is provided on the side of the expansion seat close to the inclined surface, and the positioning assembly is used to position the partition plate.

[0012] In a preferred embodiment, when the positioning assembly is a fixing bolt, a positioning space is left between one end of the wide plate and the corresponding end of the narrow plate, and the fixing bolt is threadedly connected to the T-slot and abuts against the positioning space.

[0013] In a preferred embodiment, when the positioning component is the second linear drive component, a connecting block is fixedly provided at one end of the wide plate, and the connecting block passes through the outside of the T-slot, and the output end of the second linear drive component is fixed to the connecting block.

[0014] In a preferred embodiment, an angle adjustment assembly is provided between the carrier vehicle and the mounting arm, and the angle adjustment assembly includes a hydraulic cylinder, and the hydraulic cylinder is fixedly mounted on the mounting arm, and a mounting plate is installed at the output end of the hydraulic cylinder, and the mounting plate is slidably mounted on the mounting arm, and the mounting plate is fixed to the output end of the carrier vehicle.

[0015] In a preferred embodiment, an automatic separation mechanism is provided between the linear drive assembly 1 and the reaming seat. After the blasting hole is drilled, the linear drive assembly 1 is separated from the reaming seat by the automatic separation mechanism and the reaming seat is left at the protective reaming position.

[0016] In a preferred embodiment, the automatic separation mechanism includes an automatic mechanical claw, and the automatic mechanical claw is fixedly connected to the output end of the linear drive component. The output end of the automatic mechanical claw is provided with two groups of jaws, and limit blocks are fixedly provided on opposite sides of the two groups of jaws. A clamping block is provided between the two groups of jaws, and the limit block is located at the bottom of the clamping block. The clamping block is fixed at both ends of the hole expansion seat.

[0017] In a preferred embodiment, a rod seat is fixedly provided at one end of the clamping block, a rod is passed through the interior of the rod seat, a tooth groove is provided on one side of the rod, and a driving gear assembly and a passive guide wheel are rotatably installed on both sides of the interior of the rod seat, and the driving gear assembly and the passive guide wheel are respectively located on both sides of the rod, and the driving gear assembly is meshed with the tooth groove. When the hole expansion seat is separated from the linear drive assembly and remains at the protective hole expansion position, the hole expansion seat is supported and positioned by the rod.

[0018] The beneficial effects of the present invention are:

[0019] The present invention expands the top of the blast hole, compacts the periphery of the top of the blast hole, and pours protective materials around the top of the blast hole, so that during drilling construction, the periphery of the top of the blast hole can be prevented from collapsing into the inside of the blast hole due to groundwater infiltration.

[0020] The present invention can close the opening of the pouring outlet by sliding the partition plate from the inside of the T-shaped groove to the inside of the pouring outlet, so as to adjust the pouring position and avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a construction schematic diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the carrier vehicle of the present invention.

[0023] Figure 3 It is a schematic diagram of the mounting arm structure of the present invention.

[0024] Figure 4 It is a schematic diagram of the bottom structure of the drill pipe base of the present invention.

[0025] Figure 5 It is a schematic diagram of the construction of the drill bit of the present invention.

[0026] Figure 6 It is a schematic diagram of the bottom structure of the hanger of the present invention.

[0027] Figure 7 It is a schematic diagram of the side structure of the hanger of the present invention.

[0028] Figure 8 It is a schematic diagram of the structure of the hole expansion seat of the present invention.

[0029] Fig. 9 It is a schematic diagram of the side cross-section structure of the hole expansion seat of the present invention.

[0030] Fig.10 It is a schematic diagram of the inclined surface structure of the hole expansion seat of the present invention.

[0031] Fig.11 This is a schematic diagram of the installation of the linear drive component 2 of the present invention.

[0032] Fig.12 This is a schematic diagram of the installation of the automatic mechanical claw of the present invention.

[0033] Fig.13 It is a schematic diagram of the clamping block structure of the present invention.

[0034] Fig.14 It is a schematic diagram of the side section structure of the rod insertion seat of the present invention.

[0035] The accompanying drawings are marked as follows: 1, carrier; 2, mounting arm; 21, drill pipe jacket; 3, angle adjustment assembly; 31, hydraulic cylinder; 32, mounting plate; 4, drill pipe base; 41, drill bit; 42, blasting hole; 43, protective reaming; 5, hanger; 51, guide ring seat; 52, guide groove; 53, rotary drive assembly; 54, support column; 6, linear drive assembly 1; 7, reaming seat; 71, slider; 72, pouring port; 73, diversion port; 7 4. Pump pipe seat; 75. Casting outlet; 76. T-slot; 761. Fixing bolt; 77. Partition plate; 771. Wide plate; 772. Narrow plate; 78. Linear drive assembly II; 8. Automatic mechanical claw; 81. Clamping claw; 82. Limiting block; 83. Clamping block; 9. Rod seat; 91. Rod; 911. Tooth groove; 92. Driving gear assembly; 93. Passive guide wheel; A. Slope; A1. Gravel layer; A2. Soil layer; A3. Rock layer. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0037] Refer to the instruction manual Figures 1 to 11A kind of earthwork construction device for inverted siphon construction includes a carrier 1, a mounting arm 2 is installed on the carrier 1, a drill pipe jacket 21 and a drill pipe base 4 are installed on the mounting arm 2, and the drill pipe jacket 21 and the drill pipe base 4 are used to install the drill pipe, and the output end of the drill pipe is provided with a drill bit 41, and the drill bit 41 penetrates the gravel layer A1, the soil layer A2 and the rock layer A3 of the slope A, and the drill pipe drills a blasting hole 42 on the slope A through the drill bit 41, and a hoisting mechanism is installed on the drill pipe base 4, and the output end of the hoisting mechanism can be detachably connected to the anti-collapse mechanism, and the anti-collapse mechanism Located at the top of the blasting hole 42; the anti-collapse mechanism includes a hole expansion seat 7, the two side surfaces of the hole expansion seat 7 are an inclined surface and a straight surface respectively, and the side of the straight surface of the hole expansion seat 7 is arranged close to the drill bit 41, and a pouring inlet 72 is provided on the side of the hole expansion seat 7 close to the inclined surface, and a pouring inlet 72 is provided on the top of the hole expansion seat 7, and a guide port 73 is connected between the pouring inlet 72 and the pouring outlet 75; when the hole expansion seat 7 moves toward the bottom of the blasting hole 42, a protective expansion hole 43 is formed at the top of the blasting hole 42 through the inclined surface of the hole expansion seat 7, and a protective material is poured into the protective expansion hole 43 through the pouring outlet 75.

[0038] It should be noted that the drill bit 41 is a pick barrel drill bit of the prior art, which is hollow inside and has a cover plate at the bottom. The drilled soil and gravel are stored inside the drill bit 41. After the drill bit 41 is moved out to the outside of the blasting hole 42, the cover plate is opened to pour out the soil and gravel inside the drill bit 41. Therefore, before the construction of the blasting hole 42 is completed, the drill bit 41 needs to be pulled out from the ground many times to pour out the soil and gravel. In the water-containing rock layer A3, groundwater will be brought out, so the brought-out groundwater soaks the soil layer A2, causing the top of the blasting hole 42 to collapse. A lifting mechanism for driving the drill rod to move vertically is installed on the mounting arm 2. The specific structure of the lifting mechanism and the connection method with the drill rod are common technical means for technical personnel in this field, and are irrelevant to the technical problem to be solved by the present invention, so they are not illustrated or described in detail.

[0039] In this embodiment, the implementation scenario is specifically as follows: first, the installation arm 2 is transported to the construction site by the carrier 1, and then a drill rod with a drill bit 41 is installed on the installation arm 2, and the drill bit 41 is aligned with the drilling point. Finally, the drill rod is driven by the lifting mechanism to perform drilling construction. Before the drill bit 41 drills into the rock layer A3, the installation arm 2 is lowered so that the bottom end of the expansion seat 7 enters the gravel layer A1 of the blasting hole 42 and the upper half of the soil layer A2. The expansion seat 7 continues to descend, and the top of the blasting hole 42 is expanded from a column to a trapezoid through the inclined surface on one side, and then protective material is injected into the pouring inlet 72 through a pump pipe. The protective material is cement slurry or concrete. After solidification, the gravel layer A1 and the soil layer A2 are integrated. By expanding the top of the blasting hole 42, the periphery of the top of the blasting hole 42 is compacted, and the protective material is poured around the top of the blasting hole 42. During the drilling construction, the periphery of the top of the blasting hole 42 can be prevented from collapsing into the blasting hole 42 due to groundwater infiltration.

[0040] Furthermore, the hoisting mechanism includes a hanger 5, which is installed on the drill pipe base 4. A guide ring seat 51 is fixedly installed at the bottom of the hanger 5. A guide groove 52 is opened inside the guide ring seat 51. A rotation drive component 53 is installed inside the guide groove 52. A support column 54 is slidably provided on the guide groove 52, and the support column 54 is located at the top end of the guide groove 52 and is transmission-connected to the output end of the rotation drive component 53. The support column 54 is driven to slide in an annular manner along the guide groove 52 by the rotation drive component 53, and the expansion seat 7 is installed at the bottom end of the support column 54.

[0041] It should be noted that the rotating drive component 53 and the supporting column 54 are connected by a chain and a toothed disc transmission. This transmission method is an existing mature technology. A brief description is as follows: the rotating drive component 53 is a motor, which can drive the chain to rotate inside the guide groove 52 through the toothed disc. The top of the supporting column 54 is fixed to a certain point of the chain, so that the supporting column 54 can slide in a circle along the direction of the guide groove 52.

[0042] Furthermore, a linear drive component 6 is fixedly installed on the bottom end of the support column 54, a slider 71 is installed on the top of the hole expansion seat 7, and the slider 71 is fixedly connected to the output end of the linear drive component 6. The linear drive component 6 drives the hole expansion seat 7 to move laterally in a direction away from or close to the drill bit 41 through the slider 71.

[0043] It should be noted that the reamer seat 7 is far away from or close to the drill bit 41, and the diameter of the protective reamer 43 can be changed according to needs.

[0044] Furthermore, pump pipe seats 74 are fixedly provided at both ends of the expansion seat 7, and the pump pipe seats 74 are used to support the pump pipe. A T-shaped slot 76 is provided on the side of the expansion seat 7 close to the inclined surface, and the T-shaped slot 76 is connected to the pouring outlet 75. A partition plate 77 is slidably provided inside the T-shaped slot 76, and the partition plate 77 is used to close the opening of the pouring outlet 75. The partition plate 77 includes a wide plate 771, and a narrow plate 772 is fixed on the wide plate 771. A positioning component is provided on the side of the expansion seat 7 close to the inclined surface, and the positioning component is used to position the partition plate 77.

[0045] It should be noted that the cross-sections of the T-slot 76 and the partition plate 77 are both T-shaped. The partition plate 77 slides from the inside of the T-slot 76 to the inside of the pouring outlet 75 to close the opening of the pouring outlet 75 to adjust the pouring position and avoid waste.

[0046] Furthermore, when the positioning component is a fixing bolt 761, a positioning space is reserved between one end of the wide plate 771 and the corresponding end of the narrow plate 772, and the fixing bolt 761 is threadedly connected to the T-slot 76 and abuts against the positioning space.

[0047] It should be noted that the size of the opening of the gate 75 is manually adjusted by fixing the bolt 761 .

[0048] Furthermore, when the positioning component is the second linear drive component 78, a connecting block is fixedly provided at one end of the wide plate 771, and the connecting block passes through the outside of the T-slot 76, and the output end of the second linear drive component 78 is fixed to the connecting block.

[0049] It should be noted that the second linear drive component 78 is an electric screw, which can drive the wide plate 771 to automatically slide into the pouring outlet 75 through the connecting block.

[0050] Furthermore, an angle adjustment assembly 3 is provided between the carrier 1 and the mounting arm 2, and the angle adjustment assembly 3 includes a hydraulic cylinder 31, and the hydraulic cylinder 31 is fixedly installed on the mounting arm 2, and a mounting plate 32 is installed on the output end of the hydraulic cylinder 31, and the mounting plate 32 is slidably installed on the mounting arm 2, and the mounting plate 32 is fixed to the output end of the carrier 1.

[0051] It should be noted that a gas cylinder or oil cylinder is installed at the output end of the carrier 1 for driving the mounting arm 2 to tilt, and the hydraulic cylinder 31 is used to adjust the height position of the mounting arm 2, that is, the mounting arm 2 is lifted and lowered by the hydraulic cylinder 31.

[0052] Refer to the instruction manual Figure 12 to Figure 14 After the drilling of the blasting hole 42 is completed, it is necessary to use high-pressure airflow or a hole cleaner to clean the hole. Compared with the groundwater brought out by drilling, the amount of groundwater brought out by hole cleaning is greater, and the groundwater brought out under high pressure has impact force. Therefore, only relying on the above-mentioned scheme to compact and pour protective materials around the top of the blasting hole 42 is difficult to support a large amount of groundwater rushing out, resulting in the collapse of the top of the blasting hole 42.

[0053] In order to solve this problem, the following technical solution is also provided: an automatic separation mechanism is provided between the linear drive assembly 6 and the hole expansion seat 7. After the blasting hole 42 is drilled, the linear drive assembly 6 is separated from the hole expansion seat 7 by the automatic separation mechanism and the hole expansion seat 7 is left at the protective hole expansion 43.

[0054] Furthermore, the automatic separation mechanism includes an automatic mechanical claw 8, and the automatic mechanical claw 8 is fixedly connected to the output end of the linear drive component 6. The output end of the automatic mechanical claw 8 is provided with two groups of jaws 81, and the two groups of jaws 81 are fixedly provided with limit blocks 82 on the opposite sides. A clamping block 83 is provided between the two groups of jaws 81, and the limit block 82 is located at the bottom of the clamping block 83. The clamping block 83 is fixedly provided at both ends of the expansion seat 7.

[0055] It should be noted that the automatic mechanical claw 8 includes a driver and an actuator. The driver is a motor or a cylinder, and the actuator is a clamp 81. Two sets of clamps 81 clamp the clamp block 83 and cooperate with the limit block 82 to support the clamp block 83 from the bottom. The linear drive component 6 and the expansion seat 7 are movably connected.

[0056] Furthermore, one end of the clamping block 83 is fixedly provided with a rod seat 9, a rod 91 is passed through the interior of the rod seat 9, a tooth groove 911 is provided on one side of the rod 91, and a driving gear assembly 92 and a passive guide wheel 93 are rotatably installed on both sides of the interior of the rod seat 9, and the driving gear assembly 92 and the passive guide wheel 93 are respectively located on both sides of the rod 91, and the driving gear assembly 92 is meshed with the tooth groove 911. When the hole expansion seat 7 is separated from the linear drive assembly 6 and remains at the protective hole expansion 43, the hole expansion seat 7 is supported and positioned by the rod 91.

[0057] It should be noted that the driving gear assembly 92 includes a motor and a driving gear. The output end of the motor drives the driving gear to rotate, and the insertion rod 91 is raised and lowered through the tooth groove 911. The passive guide wheel 93 plays a supporting and guiding role.

[0058] In this embodiment, the implementation scenario is specifically as follows: after the drilling work of the blasting hole 42 is completed, the two groups of jaws 81 are driven away from the clamping block 83 by the driver of the automatic mechanical claw 8, and the limit block 82 and the clamping block 83 are vertically offset, so that the automatic mechanical claw 8 releases the lock on the reamer 7, and the linear drive component 16 is separated from the reamer 7, and the motor of the active gear assembly 92 is started to drive the active gear to rotate, and the active gear is engaged with the tooth groove 911 to make the rod 91 descend and insert into the stratum of the slope A, thereby supporting the positioning reamer 7 to stay at the protective reamer 43. When high-pressure airflow or a hole cleaner is used for hole cleaning, the surging groundwater is blocked by the direct surface of the reamer 7, thereby reducing the impact force of the groundwater on the protective reamer 43, and avoiding the collapse of the top of the blasting hole 42 caused by the surging of groundwater.

[0059] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. An earthwork construction device for inverted siphon construction, comprising a carrier (1), a mounting arm (2) mounted on the carrier (1), a drill pipe jacket (21) and a drill pipe base (4) mounted on the mounting arm (2), the drill pipe jacket (21) and the drill pipe base (4) being used to mount a drill pipe, a drill bit (41) being provided at the output end of the drill pipe, and the drill bit (41) penetrating a gravel layer (A1), a soil layer (A2) and a rock layer (A3) of a slope (A), and the drill pipe drilling a blasting hole (42) on the slope (A) through the drill bit (41), characterized in that: A hoisting mechanism is installed on the drill rod base (4), the output end of the hoisting mechanism is detachably connected to the anti-collapse mechanism, and the anti-collapse mechanism is located at the top of the blasting hole (42); The anti-collapse mechanism comprises a hole expansion seat (7), the two side surfaces of the hole expansion seat (7) are respectively an inclined surface and a straight surface, and the straight surface of the hole expansion seat (7) is arranged close to the drill bit (41), a pouring inlet (72) is provided on the side of the hole expansion seat (7) close to the inclined surface, a pouring inlet (72) is provided on the top of the hole expansion seat (7), and a guide port (73) is connected between the pouring inlet (72) and the pouring outlet (75); When the expansion seat (7) moves toward the bottom of the blasting hole (42), a protective expansion hole (43) is formed at the top of the blasting hole (42) through the inclined surface of the expansion seat (7), and protective material is poured into the protective expansion hole (43) through the pouring outlet (75).

2. The earthwork construction device for inverted siphon construction according to claim 1, characterized in that: The hoisting mechanism comprises a hanger (5), wherein the hanger (5) is mounted on a drill pipe base (4), a guide ring seat (51) is fixedly mounted on the bottom of the hanger (5), a guide groove (52) is provided inside the guide ring seat (51), a rotary drive assembly (53) is installed inside the guide groove (52), a support column (54) is slidably provided on the guide groove (52), and the support column (54) is located at the top end of the guide groove (52) and is transmission-connected to the output end of the rotary drive assembly (53), and the support column (54) is driven by the rotary drive assembly (53) to slide in an annular manner along the guide groove (52), and the reamer seat (7) is installed at the bottom end of the support column (54).

3. The earthwork construction device for inverted siphon construction according to claim 2, characterized in that: A linear drive component (6) is fixedly installed at the bottom end of the support column (54), a slider (71) is installed at the top of the hole expansion seat (7), and the slider (71) is fixedly connected to the output end of the linear drive component (6). The linear drive component (6) drives the hole expansion seat (7) to move laterally in a direction away from or close to the drill bit (41) through the slider (71).

4. The earthwork construction device for inverted siphon construction according to claim 3, characterized in that: Pump pipe seats (74) are fixedly provided at both ends of the expansion seat (7), and the pump pipe seats (74) are used to support the pump pipe. A T-shaped groove (76) is provided on the side of the expansion seat (7) close to the inclined surface, and the T-shaped groove (76) is connected to the pouring outlet (75). A partition plate (77) is slidably provided inside the T-shaped groove (76), and the partition plate (77) is used to close the opening of the pouring outlet (75). The partition plate (77) includes a wide plate (771), and a narrow plate (772) is fixedly provided on the wide plate (771). A positioning component is provided on the side of the expansion seat (7) close to the inclined surface, and the positioning component is used to position the partition plate (77).

5. The earthwork construction device for inverted siphon construction according to claim 4, characterized in that: When the positioning assembly is a fixing bolt (761), a positioning space is left between one end of the wide plate (771) and one end corresponding to the narrow plate (772), and the fixing bolt (761) is threadedly connected to the T-slot (76) and abuts against the positioning space.

6. The earthwork construction device for inverted siphon construction according to claim 4, characterized in that: When the positioning assembly is the second linear drive assembly (78), a connection block is fixedly provided at one end of the wide plate (771), and the connection block passes through the outside of the T-shaped slot (76), and the output end of the second linear drive assembly (78) is fixed to the connection block.

7. An earthwork construction device for inverted siphon construction according to claim 5 or 6, characterized in that: An angle adjustment component (3) is provided between the carrier (1) and the mounting arm (2), the angle adjustment component (3) comprising a hydraulic cylinder (31), and the hydraulic cylinder (31) is fixedly mounted on the mounting arm (2), an output end of the hydraulic cylinder (31) is provided with a mounting plate (32), the mounting plate (32) is slidably mounted on the mounting arm (2), and the mounting plate (32) is fixed to the output end of the carrier (1).

8. The earthwork construction device for inverted siphon construction according to claim 7, characterized in that: An automatic separation mechanism is provided between the linear drive assembly (6) and the hole expansion seat (7). After the drilling of the blasting hole (42) is completed, the linear drive assembly (6) is separated from the hole expansion seat (7) by the automatic separation mechanism and the hole expansion seat (7) is left at the protective hole expansion (43).

9. The earthwork construction device for inverted siphon construction according to claim 8, characterized in that: The automatic separation mechanism comprises an automatic mechanical claw (8), and the automatic mechanical claw (8) is fixedly connected to the output end of the linear drive component (6), the output end of the automatic mechanical claw (8) is provided with two groups of clamping claws (81), the opposite sides of the two groups of clamping claws (81) are fixedly provided with limit blocks (82), a clamping block (83) is provided between the two groups of clamping claws (81), the limit block (82) is located at the bottom of the clamping block (83), and the clamping block (83) is fixedly provided at both ends of the expansion seat (7).

10. The earthwork construction device for inverted siphon construction according to claim 9, characterized in that: One end of the clamping block (83) is fixedly provided with an insertion rod seat (9), an insertion rod (91) is passed through the interior of the insertion rod seat (9), a tooth groove (911) is provided on one side of the insertion rod (91), and a driving gear assembly (92) and a passive guide wheel (93) are rotatably installed on both sides of the interior of the insertion rod seat (9), and the driving gear assembly (92) and the passive guide wheel (93) are respectively located on both sides of the insertion rod (91), and the driving gear assembly (92) is meshed with the tooth groove (911). When the expansion hole seat (7) is separated from the linear drive assembly (6) and remains at the protective expansion hole (43), the expansion hole seat (7) is supported and positioned by the insertion rod (91).

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