A silt dewatering well hole-forming device and hole-forming method

Abstract

The application relates to a silt dewatering well hole-forming device and a hole-forming method, and relates to the technical field of hole-forming equipment. The device comprises a drill rod arranged on a rack, a compaction mechanism arranged on the drill rod, the compaction mechanism comprising a driving assembly and a compaction assembly, and the compaction assembly being connected with the driving assembly. The application has the effect that the drilled hole is not prone to collapse.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pore-forming equipment, in particular to a pore-forming device and pore-forming method of a silt dewatering well. BACKGROUND

[0002] The dewatering well refers to a small well for draining water in a mine tunnel or a stope. Generally, in the process of mining, there is an underground tunnel drainage system that can be used to guide water in the stope or tunnel into a dewatering well at a certain distance, and then flow into a water sump through an underground tunnel connected with the dewatering well, and then be pumped to the ground surface through a special drainage well or directly flow out of the ground surface through a drainage tunnel.

[0003] At present, the construction of the dewatering well is generally formed by drilling a hole through a drilling machine.

[0004] In the process of implementing the present application, the inventors found that at least the following problem exists in the technology: Since the silt is relatively loose, once the drilling is completed by the drilling machine, if the drilled hole is not timely supported, the drilled hole is prone to collapse, and thus needs to be improved. SUMMARY

[0005] In order to improve the problem that the drilled hole is prone to collapse, the present application provides a pore-forming device and pore-forming method of a silt dewatering well.

[0006] In a first aspect, the present application provides a pore-forming device of a silt dewatering well, which adopts the following technical scheme:

[0007] A pore-forming device and pore-forming method of a silt dewatering well, comprising a drill rod provided on a rack, a compaction mechanism is arranged on the drill rod, the compaction mechanism comprises a driving assembly and a compaction assembly, and the compaction assembly is connected with the driving assembly.

[0008] By adopting the above technical scheme, when the drilling is completed, the drill rod is not retracted first, the driving assembly is started to push the compaction assembly to approach the hole wall until the silt of the hole wall is compacted, and then the drilling motor is started to change the position of the compaction assembly, so that the compaction assembly can compact the silt of the hole wall of one turn, thereby preventing the drilled hole from collapsing.

[0009] Optionally, the driving assembly comprises a driving motor and a screw rod, a placement hole is formed in the drill rod, the driving motor is fixed in the placement hole, one end of the screw rod is fixed coaxially with the output end of the driving motor, and the other end of the screw rod is connected with the compaction assembly.

[0010] By adopting the above technical solution, after drilling is completed, the drill rod is not retracted. The drive motor is started to drive the screw to rotate. The rotation of the screw will push the compaction component closer to the hole wall until it compacts the silty sand on the hole wall. Then, the drilling motor is started to change the position of the compaction component so that the compaction component can compact the silty sand on the hole wall around the perimeter, thereby making the drilled hole less prone to collapse.

[0011] Optionally, the compaction assembly includes a pressure plate, a guide cylinder, a threaded cylinder, and a guide rod. The guide cylinder and the threaded cylinder are both fixed to the pressure plate. One end of the guide rod is fixed to the drill rod, and the other end is inserted into and slides in the guide cylinder. The end of the screw away from the drive motor is threadedly connected to the threaded cylinder.

[0012] By adopting the above technical solution, after drilling is completed, the drill rod is not retracted immediately. Instead, the drive motor is started to drive the screw to rotate. The rotation of the screw will push the pressure plate closer to the hole wall until it compacts the silty sand on the hole wall. Then, the drive motor is started to drive the screw to reverse, and then the drilling motor is started to change the position of the pressure plate so that the pressure plate can compact the silty sand on the hole wall around the perimeter, thereby making the drilled hole less prone to collapse.

[0013] Optionally, the pressure plate is provided with a water injection hole and a plurality of water distribution holes, and the water injection hole is connected to the water distribution holes. The drill rod is provided with a water receiving hole, and the water injection hole and the water receiving hole are connected by a flexible hose.

[0014] By adopting the above technical solution, during the drilling process, a water source can be connected to the water inlet. At this time, as the pressure plate rotates, water is sprayed onto the silty sand on the hole wall through the water inlet, hose, water injection hole and water distribution hole in sequence to achieve the effect of wetting the silty sand, thereby improving its adhesion. As a result, when the pressure plate compacts and tightens the silty sand, the silty sand can be better compacted and tightened, making the drilled hole less prone to collapse.

[0015] Optionally, the water distribution hole is provided with a sealing component to prevent silt from entering the water distribution hole.

[0016] By adopting the above technical solution, the function of the sealing component is to block the water distribution hole when the pressure plate compacts and tightens the silt on the hole wall, so that the silt is not easy to enter the water distribution hole and cause blockage; when in use, the sealing component is opened to allow water to flow out of the water distribution hole.

[0017] Optionally, the sealing assembly includes a sealing plate and a screw rod. The inner wall of the water distribution hole is provided with a sealing hole. One end of the sealing plate is inserted into the sealing hole and the other end is sealed in the water distribution hole. One end of the screw rod is rotatably connected to the pressure plate and the other end passes through the sealing plate and is threadedly connected to the sealing plate.

[0018] By adopting the above technical solution, during drilling, the screw can be turned to drive the sealing plate to move towards the sealing hole, so as to open the water distribution hole and facilitate water outflow from the water distribution hole; after drilling is completed, the screw can be turned in the opposite direction to drive the sealing plate to move into the water distribution hole, so as to close the water distribution hole and prevent silt from easily entering the water distribution hole.

[0019] Optionally, the rack is provided with a moving component and a fixed component, and a triggering component is provided between the moving component and the fixed component;

[0020] The moving component includes a push hydraulic cylinder, a moving block, and casters. The frame has a moving hole. The push hydraulic cylinder is fixed to the frame. The moving block is inserted into and slides in the moving hole. The push shaft of the push hydraulic cylinder passes through the moving hole and is fixed to the moving block. The casters are fixed to the moving block. The triggering component is connected to the moving component.

[0021] By adopting the above technical solution, when the frame needs to be moved, the hydraulic cylinder is activated to push the casters out of the moving hole and into contact with the ground. At this time, the trigger component can be connected to the fixed component, and the end of the trigger component away from the fixed component abuts against the moving block. Then, the construction personnel can push the frame. At this time, the frame can be easily moved by the casters without the need for the construction personnel to carry the frame. When drilling is required, the hydraulic cylinder is activated to retract the casters into the moving hole. At this time, the trigger component will separate from the fixed component and connect to the moving block. After separation, the fixed component will be inserted into the soil.

[0022] Optionally, the trigger assembly includes a trigger rod and a trigger spring. The inner wall of the moving hole is provided with a trigger hole, and the moving block is provided with a receiving hole. One end of the trigger rod is inserted into the receiving hole and the other end is inserted into the trigger hole. The trigger spring is sleeved on the trigger rod, with one end fixed to the trigger rod and the other end fixed to the bottom of the trigger hole. The trigger rod is provided with a guide surface, and the bottom end of the guide surface is lower than the opening of the receiving hole. The bottom of the trigger hole is provided with a through hole, and the trigger rod passes through the through hole.

[0023] By adopting the above technical solution, when the universal wheel is retracted into the moving hole, the moving block moves vertically upward until the receiving hole and the trigger hole are coaxial. At this time, the trigger rod will be automatically inserted into the receiving hole by the elastic force of the trigger spring. At the same time, the trigger rod will separate from the fixing component, and the fixing component will be automatically inserted into the soil layer.

[0024] Optionally, the fixing component includes a fixing spring and a fixing anchor rod. The frame has a clearance hole. One end of the fixing anchor rod is inserted into the clearance hole and the other end is inserted into the soil layer. One end of the fixing spring is fixed to the fixing anchor rod and the other end is fixed to the bottom of the clearance hole. The fixing anchor rod has a reserved hole for the trigger rod to be inserted.

[0025] By adopting the above technical solution, when the universal wheel is retracted into the moving hole, the moving block moves vertically upward until the receiving hole and the trigger hole are coaxial. At this time, the trigger rod will automatically insert into the receiving hole by the elastic force of the trigger spring. At the same time, the end of the trigger rod away from the moving block will separate from the reserved hole. At this time, the fixed anchor rod will automatically insert into the soil layer by the elastic force of the fixed spring, thereby improving the stability of the frame so that the frame is not easily displaced due to vibration during drilling.

[0026] Secondly, this application provides a hole-forming method for a hole-forming device for dewatering wells in silty sand, employing the following technical solution:

[0027] A method for forming a hole in a hole-forming device for a silty soil dewatering well includes the following steps:

[0028] S1. Push the hydraulic cylinder to push the caster out of the moving hole and into contact with the ground, and then push the frame to the ground where the hole needs to be opened;

[0029] S2. By pushing the hydraulic cylinder, the caster wheel is retracted into the moving hole. At this time, the triggering component will separate from the fixed anchor rod. The fixed anchor rod will be inserted into the soil layer by the elastic force of the fixed spring, so that the frame is not easily displaced by vibration during drilling.

[0030] S3. The worker drives the drill rod to rotate, and the drill bit on the drill rod will drill a hole; at the same time, water is injected into the water inlet hole. At this time, the water is sprayed into the silty sand in the hole through the connecting pipe, the water inlet hole and the water outlet hole in sequence, so as to moisten the silty sand.

[0031] S4. After drilling is complete, rotate the lead screw. The rotation of the lead screw will drive the sealing plate to close the water distribution hole.

[0032] S5. Start the drive motor to drive the pressure plate to bring the inner wall of the drilled hole close to the hole until the silty sand on the hole wall is compacted so that the drilled hole is less likely to collapse.

[0033] S6. Lift the drill rod out of the hole being drilled.

[0034] By adopting the above technical solution, the drilled holes are less likely to collapse.

[0035] In summary, this application includes at least one of the following beneficial effects:

[0036] 1. After drilling is completed, do not retract the drill rod. Start the drive assembly to push the compaction assembly closer to the hole wall until the silty sand on the hole wall is compacted. Then start the drilling motor to change the position of the compaction assembly so that the compaction assembly can compact the silty sand on the hole wall around the perimeter, thereby making the drilled hole less prone to collapse.

[0037] 2. The function of the sealing component is to block the water distribution hole when the pressure plate compacts and tightens the silt on the hole wall, so that the silt is not easy to enter the water distribution hole and cause blockage. When in use, the sealing component is opened to allow water to flow out of the water distribution hole.

[0038] 3. When the caster wheel is retracted into the moving hole, the moving block moves vertically upward until the receiving hole and the trigger hole are coaxial. At this time, the trigger rod will automatically insert into the receiving hole by the elastic force of the trigger spring. At the same time, the trigger rod will separate from the fixing component, and the fixing component will automatically insert into the soil layer. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0040] Figure 2 This is a schematic diagram illustrating the structure of the mobile component in the embodiments of this application;

[0041] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0042] Figure 4 This is a schematic diagram illustrating the compaction mechanism in the embodiments of this application;

[0043] Figure 5 This is a schematic diagram illustrating the structure of the sealing component in an embodiment of this application.

[0044] In the diagram: 1. Frame; 11. Base plate; 111. Moving hole; 112. Clearing hole; 113. Trigger hole; 114. Through hole; 12. Top plate; 121. Drive hydraulic cylinder; 122. Support plate; 123. Drilling motor; 2. Drill rod; 21. Placement hole; 3. Drive assembly; 31. Drive motor; 32. Screw; 4. Compaction assembly; 41. Pressure plate; 411. Water injection hole; 4111. Hose; 412. Water distribution hole ; 4121, sealing hole; 43, guide cylinder; 44, guide rod; 45, threaded cylinder; 5, sealing assembly; 51, sealing plate; 52, lead screw; 6, moving assembly; 61, pushing hydraulic cylinder; 62, moving block; 621, receiving hole; 63, universal wheel; 7, trigger assembly; 71, trigger rod; 711, guide surface; 72, trigger spring; 8, fixing assembly; 81, fixing spring; 82, fixing anchor bolt; 821, reserved hole. Detailed Implementation

[0045] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0046] This application discloses a drilling device for dewatering wells in silty sand. (Refer to...) Figure 1 A drilling device for a silty soil dewatering well includes a drill rod 2 mounted on a frame 1. The frame 1 includes a base plate 11 and a top plate 12. The base plate 11 is fixedly connected to the top plate 12 by rods at the four corners, and the top plate 12 is located directly above the base plate 11. A through hole is provided in the center of the top wall of the base plate 11 to facilitate the movement of the drill rod 2.

[0047] Reference Figure 1 A drill bit is installed at the bottom of the drill rod 2. A driving hydraulic cylinder 121 is fixedly installed on the top wall of the top plate 12. The push shaft of the driving hydraulic cylinder 121 passes through the top plate 12 and is fixedly installed on a receiving plate 122. In this embodiment, there are two driving hydraulic cylinders 121, and the two driving hydraulic cylinders 121 are symmetrically arranged about the drill rod 2 as the central axis. A drilling motor 123 is installed on the top wall of the receiving plate 122. The output end of the drilling motor 123 passes through the receiving plate 122 and is coaxially fixed to the drill rod 2. In use, the frame 1 is transported to the required hole location on the ground, and then the driving hydraulic cylinder 121 and the drilling motor 123 are started. The driving hydraulic cylinder 121 pushes the drill bit closer to the ground until a hole is made in the ground. After drilling is completed, the drilling motor 123 is turned off and the drill rod 2 is retracted again by the driving hydraulic cylinder 121, thereby completing the hole opening in the ground.

[0048] Reference Figure 2 and Figure 3A moving component 6 and a fixing component 8 are provided at the bottom of the substrate 11, and a triggering component 7 is provided between the moving component 6 and the fixing component 8. The moving component 6 includes a pushing hydraulic cylinder 61, a moving block 62, and a universal wheel 63. Moving holes 111 are provided at the four corners of the bottom wall of the substrate 11. The moving block 62 is inserted into the moving hole 111 and can slide vertically. The pushing hydraulic cylinder 61 is fixed to the top of the substrate 11, and the pushing shaft of the pushing hydraulic cylinder 61 passes through the moving hole 111 and is fixedly connected to the top wall of the moving block 62. The universal wheel 63 is fixedly connected to the bottom wall of the moving block 62. In this embodiment, the universal wheel 63 is housed in the moving hole 111.

[0049] When the frame 1 needs to be moved, the hydraulic cylinder 61 is activated to push the caster 63 out of the moving hole 111 and into contact with the ground. At this time, the trigger component 7 can be connected to the fixed component 8, and the end of the trigger component 7 away from the fixed component 8 abuts against the moving block 62. Then, the construction personnel can push the frame 1. At this time, the frame 1 can be easily moved by the caster 63 without the construction personnel having to carry the frame 1. When drilling is required, the hydraulic cylinder 61 is activated to retract the caster 63 into the moving hole 111. At this time, the trigger component 7 will separate from the fixed component 8 and connect to the moving block 62. After separation, the fixed component 8 will be inserted into the soil layer, thereby improving the stability of the frame 1 so that the frame 1 is not easily displaced due to vibration during drilling.

[0050] Reference Figure 3 The trigger assembly 7 includes a trigger rod 71 and a trigger spring 72. The inner wall of the moving hole 111 is provided with a trigger hole 113. The moving block 62 is provided with a receiving hole 621 on the side corresponding to the trigger hole 113. One end of the trigger rod 71 is inserted into the trigger hole 113 and the other end is inserted into the receiving hole 621. The top and bottom walls of the trigger rod 71 located in the receiving hole 621 are provided with guide surfaces 711. The end of the guide surface 711 near the trigger hole 113 is lower than the opening of the receiving hole 621.

[0051] Reference Figure 3The trigger spring 72 is sleeved on one end of the trigger rod 71 located in the trigger hole 113, with one end of the trigger spring 72 fixed to the trigger rod 71 and the other end fixed to the bottom of the trigger hole 113. The bottom of the trigger hole 113 has a through hole 114, and the end of the trigger rod 71 away from the moving block 62 passes through the through hole 114. When the caster wheel 63 extends outward into the moving hole 111, the moving block 62 slides downward in the vertical direction. At this time, through the guide surface 711 on the trigger rod 71, the trigger rod 71 will separate from the receiving hole 621 and move away from the moving block 62. At the same time, the construction personnel can store the fixing component 8 so that the trigger rod 71 can move to the fixing component 8 and connect with the fixing component 8, thereby facilitating the construction personnel to move the frame 1 through the caster wheel 63. When the caster wheel 63 is stored in the moving hole 111, the moving block 62 moves upward in the vertical direction until the receiving hole 621 is coaxial with the trigger hole 113. At this time, the trigger rod 71 will automatically insert into the receiving hole 621 by the elastic force of the trigger spring 72. At the same time, the trigger rod 71 will separate from the fixing component 8, and the fixing component 8 will automatically insert into the soil layer, thereby improving the stability of the frame 1 so that the frame 1 is not easily displaced due to vibration during drilling.

[0052] Reference Figure 3 The fixing component 8 includes a fixing spring 81 and a fixing anchor rod 82. Each of the four corners of the bottom wall of the base plate 11 has a clearance hole 112, which communicates with the through hole 114. One end of the fixing anchor rod 82 is inserted into the clearance hole 112, and the other end is inserted into the soil layer. One end of the fixing spring 81 is fixedly connected to the bottom of the clearance hole 112, and the other end is fixedly connected to the top wall of the fixing anchor rod 82. A reserved hole 821 for inserting the trigger rod 71 is provided at the end of the fixing anchor rod 82 near the trigger rod 71.

[0053] Reference Figure 3When the caster wheel 63 extends outward into the moving hole 111, the moving block 62 slides downward in the vertical direction. At this time, through the guide surface 711 on the trigger rod 71, the trigger rod 71 will separate from the receiving hole 621 and move away from the moving block 62. Simultaneously, the construction personnel can retract the fixing anchor rod 82 into the clearance hole 112 so that the through hole 114 is coaxial with the reserved hole 821. At this time, the end of the tactile rod away from the moving block 62 will move into the reserved hole 821, so that the spring force of the fixing anchor rod 82 is not easily fixed and extends outward into the clearance hole 112, thereby facilitating the construction. Workers move the frame 1 using casters 63. When casters 63 are retracted into the moving hole 111, the moving block 62 moves vertically upward until the receiving hole 621 is coaxial with the trigger hole 113. At this time, the trigger rod 71 will automatically insert into the receiving hole 621 by the elastic force of the trigger spring 72. At the same time, the end of the trigger rod 71 away from the moving block 62 will separate from the reserved hole 821. At this time, the fixed anchor rod 82 will automatically insert into the soil by the elastic force of the fixed spring 81, thereby improving the stability of the frame 1 so that the frame 1 is not easily displaced due to vibration during drilling.

[0054] Reference Figure 4 The drill rod 2 is equipped with a compaction mechanism, which includes a compaction component 4 and a drive component 3, and the compaction component 4 and the drive component 3 are interconnected. After drilling is completed, the drive hydraulic cylinder 121 is not activated to retract the drill rod 2. Instead, the drive component 3 is activated to push the compaction component 4 towards the hole wall until the silty sand on the hole wall is compacted. Then, the drilling motor 123 is activated to change the position of the compaction component 4 so that the compaction component 4 can compact the silty sand on the hole wall around the perimeter, thereby making the drilled hole less prone to collapse.

[0055] Reference Figure 4 The drive assembly 3 includes a drive motor 31 and a screw 32. A placement hole 21 is provided on the side wall of the drill rod 2 facing the compaction assembly 4. The drive motor 31 is fixed inside the placement hole 21. One end of the screw 32 is coaxially fixed to the output end of the drive motor 31, and the other end is connected to the compaction assembly 4. In this embodiment, the drive hydraulic cylinder 121, the push hydraulic cylinder 61, the drilling motor 123, and the drive motor 31 can all be started and stopped by a controller. After drilling is completed, the drive hydraulic cylinder 121 is not started to retract the drill rod 2. Instead, the drive motor 31 is started to drive the screw 32 to rotate. The rotation of the screw 32 pushes the compaction assembly 4 closer to the hole wall until it compacts and tightens the silty sand on the hole wall. Then, the drilling motor 123 is started to change the position of the compaction assembly 4 so that the compaction assembly 4 can compact and tighten the silty sand around the hole wall, thereby making the drilled hole less prone to collapse.

[0056] Reference Figure 4The compaction assembly 4 includes a pressure plate 41, a guide cylinder 43, a threaded cylinder 45, and a guide rod 44. Both the guide cylinder 43 and the threaded cylinder 45 are fixedly connected to the side of the pressure plate 41 closest to the drill rod 2. In this embodiment, two guide cylinders 43 are provided, symmetrically arranged about the threaded cylinder 45 as the central axis. One end of the guide rod 44 is fixedly connected to the side wall of the drill rod 2, and the other end is inserted into the guide cylinder 43 and can slide within it. The function of the guide rod 44 and the guide cylinder 43 is to prevent the pressure plate 41 from rotating with the screw 32.

[0057] Reference Figure 4 The end of the screw 32 furthest from the drive motor 31 is threaded into the threaded cylinder 45. When drilling is completed, the drive hydraulic cylinder 121 is not started to retract the drill rod 2. Instead, the drive motor 31 is started to drive the screw 32 to rotate. The rotation of the screw 32 will push the pressure plate 41 closer to the hole wall until it compacts the silt on the hole wall. Then, the drive motor 31 is started to drive the screw 32 to reverse, and then the drilling motor 123 is started to change the position of the pressure plate 41 so that the pressure plate 41 can compact the silt on the hole wall around the perimeter, thereby making the drilled hole less prone to collapse.

[0058] Reference Figure 5 The pressure plate 41 has a water injection hole 411 vertically oriented inside and a plurality of water distribution holes 412 inside. In this embodiment, there are three water distribution holes 412, and all three water distribution holes 412 are connected to the water injection hole 411. The top wall of the drill rod 2 has a water receiving hole, which is connected to the water injection hole 411 through a flexible hose 4111. The flexible hose 4111 is long enough to facilitate the pressure plate 41 to compact and tighten the silty sand. During the drilling process, an external water source can be connected to the water inlet, for example, a miniature water tank can be fixed on the drill rod 2. At this time, as the pressure plate 41 rotates, water is sprayed onto the silty sand on the hole wall through the water inlet, hose 4111, water injection hole 411 and water distribution hole 412 in sequence to achieve the effect of wetting the silty sand, thereby improving its adhesion. As a result, when the pressure plate 41 compacts and tightens the silty sand, the silty sand can be better compacted and tightened, making the drilled hole less prone to collapse.

[0059] Reference Figure 5 A sealing component 5 is provided at the end of the water distribution hole 412 away from the water injection hole 411. The function of the sealing component 5 is to block the water distribution hole 412 when the pressure plate 41 compacts and tightens the silt on the hole wall, so that the silt is not easy to enter the water distribution hole 412 and cause blockage. When in use, the sealing component 5 is opened to allow water to flow out of the water distribution hole 412.

[0060] Reference Figure 5The sealing assembly 5 includes a sealing plate 51 and a screw rod 52. A sealing hole 4121 is formed on the inner top wall of the end of the water distribution hole 412 away from the water injection hole 411. One end of the sealing plate 51 is inserted into the sealing hole 4121, and the other end is inserted into the water distribution hole 412. One end of the screw rod 52 is rotatably connected to the top wall of the pressure plate 41, and the other end passes vertically through the sealing plate 51 and is threadedly connected to it. During drilling, the screw rod 52 can be turned to drive the sealing plate 51 towards the sealing hole 4121 to open the water distribution hole 412, thus facilitating water flow from the water distribution hole 412. After drilling is completed, the screw rod 52 can be turned in the opposite direction to drive the sealing plate 51 towards the water distribution hole 412 to close the water distribution hole 412, thus preventing silt from easily entering the water distribution hole 412.

[0061] The implementation principle of the drilling device for a silty soil dewatering well in this application embodiment is as follows: After drilling is completed, the hydraulic cylinder 121 is not started to retract the drill rod 2. Instead, the drive motor 31 is started to drive the screw 32 to rotate. The rotation of the screw 32 will push the pressure plate 41 closer to the hole wall until the silty soil on the hole wall is compacted and tightened. Then, the drive motor 31 is started to drive the screw 32 to reverse, and then the drilling motor 123 is started to change the position of the pressure plate 41 so that the pressure plate 41 can compact and tighten the silty soil on the hole wall around the perimeter, thereby making the drilled hole less prone to collapse.

[0062] This application also discloses a hole-forming method for a hole-forming device for silty soil dewatering wells.

[0063] A method for forming a hole in a hole-forming device for a silty soil dewatering well includes the following steps:

[0064] S1. Push the hydraulic cylinder 61 to push the caster 63 out of the moving hole 111 and make it contact the ground, and then push the frame 1 to the ground where the hole needs to be opened;

[0065] S2. By pushing the hydraulic cylinder 61, the caster 63 is retracted into the moving hole 111. At this time, the trigger component 7 will separate from the fixed anchor rod 82. The fixed anchor rod 82 will be inserted into the soil layer by the elastic force of the fixed spring 81, so that the frame 1 is not easily displaced by vibration during drilling.

[0066] S3. The operator drives the drill rod 2 to rotate, and the drill bit on the drill rod 2 will drill a hole; at the same time, water is injected into the water inlet hole. At this time, the water is sprayed into the silty soil in the hole through the connecting pipe, the water inlet hole 411 and the water outlet hole 412 in sequence, so as to moisten the silty soil to a certain extent.

[0067] S4. After drilling is completed, rotate the lead screw 52. The rotation of the lead screw 52 will drive the sealing plate 51 to close the water distribution hole 412.

[0068] S5. Start the drive motor 31 to drive the pressure plate 41 to bring the inner wall of the drilled hole close to it until the silty sand on the hole wall is compacted so that the drilled hole is less likely to collapse.

[0069] S6. Lift drill rod 2 out of the drilled hole.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drilling device for a silty soil dewatering well, comprising a drill rod (2) mounted on a frame (1), characterized in that: The drill pipe (2) is provided with a compaction mechanism, which includes a drive assembly (3) and a compaction assembly (4), and the compaction assembly (4) is connected to the drive assembly (3); The drive assembly (3) includes a drive motor (31) and a screw (32). The drill rod (2) has a placement hole (21). The drive motor (31) is fixed in the placement hole (21). One end of the screw (32) is coaxially fixed with the output end of the drive motor (31), and the other end is connected to the compaction assembly (4). The compaction assembly (4) includes a pressure plate (41), a guide cylinder (43), a threaded cylinder (45), and a guide rod (44). The guide cylinder (43) and the threaded cylinder (45) are both fixed to the pressure plate (41). One end of the guide rod (44) is fixed to the drill rod (2), and the other end is inserted into and slides in the guide cylinder (43). The end of the screw (32) away from the drive motor (31) is threaded into the threaded cylinder (45). The pressure plate (41) is provided with a water injection hole (411) and a number of water distribution holes (412), and the water injection hole (411) is connected to the water distribution holes (412). The drill rod (2) is provided with a water receiving hole, and the water injection hole (411) and the water receiving hole are connected through a flexible hose (4111). The water distribution hole (412) is provided with a sealing component (5) to prevent silt from entering the water distribution hole (412); The sealing assembly (5) includes a sealing plate (51) and a screw rod (52). The inner wall of the water distribution hole (412) is provided with a sealing hole (4121). One end of the sealing plate (51) is inserted into the sealing hole (4121) and the other end is sealed in the water distribution hole (412). One end of the screw rod (52) is rotatably connected to the pressure plate (41) and the other end passes through the sealing plate (51) and is threadedly connected to the sealing plate (51).

2. The drilling device for a silty soil dewatering well according to claim 1, characterized in that: The frame (1) is provided with a moving component (6) and a fixed component (8), and a triggering component (7) is provided between the moving component (6) and the fixed component (8); The moving component (6) includes a push hydraulic cylinder (61), a moving block (62), and a caster wheel (63). The frame (1) has a moving hole (111). The push hydraulic cylinder (61) is fixed to the frame (1). The moving block (62) is inserted into and slides in the moving hole (111). The push shaft of the push hydraulic cylinder (61) passes through the moving hole (111) and is fixed to the moving block (62). The caster wheel (63) is fixed to the moving block (62). The trigger component (7) is connected to the moving component (6).

3. The drilling device for a silty soil dewatering well according to claim 2, characterized in that: The trigger assembly (7) includes a trigger rod (71) and a trigger spring (72). The inner wall of the moving hole (111) is provided with a trigger hole (113). The moving block (62) is provided with a receiving hole (621). One end of the trigger rod (71) is inserted into the receiving hole (621) and the other end is inserted into the trigger hole (113). The trigger spring (72) is sleeved on the trigger rod (71) and one end is fixed to the trigger rod (71) and the other end is fixed to the bottom of the trigger hole (113). The trigger rod (71) is provided with a guide surface (711) and the bottom end of the guide surface (711) is lower than the opening of the receiving hole (621). The bottom of the trigger hole (113) is provided with a through hole (114) and the trigger rod (71) passes through the through hole (114).

4. The drilling device for a silty soil dewatering well according to claim 3, characterized in that: The fixing component (8) includes a fixing spring (81) and a fixing anchor (82). The frame (1) has a clearance hole (112). One end of the fixing anchor (82) is inserted into the clearance hole (112) and the other end is inserted into the soil layer. One end of the fixing spring (81) is fixed to the fixing anchor (82) and the other end is fixed to the bottom of the clearance hole (112). The fixing anchor (82) has a reserved hole (821) for the trigger rod (71) to be inserted.

5. A method for forming a hole based on the hole-forming device for a silty soil dewatering well as described in claim 4, characterized in that... Includes the following steps: S1. By pushing the hydraulic cylinder (61), the caster (63) is pushed out of the moving hole (111) and in contact with the ground, and then the frame (1) is pushed to the ground where the hole needs to be opened; S2. By pushing the hydraulic cylinder (61), the caster wheel (63) is retracted into the moving hole (111). At this time, the trigger assembly (7) will separate from the fixed anchor rod (82). The fixed anchor rod (82) will be inserted into the soil layer by the elastic force of the fixed spring (81) so that the frame (1) will not be easily shaken and displaced during drilling. S3. The staff drives the drill rod (2) to rotate, and the drill bit on the drill rod (2) will drill a hole; at the same time, water is injected into the water inlet hole. At this time, the water is sprayed into the silt soil in the hole through the connecting pipe, the water inlet hole (411) and the water distribution hole (412) in sequence, so as to moisten the silt soil to a certain extent. S4. After drilling is completed, rotate the lead screw (52). The rotation of the lead screw (52) will drive the sealing plate (51) to close the water distribution hole (412). S5. Start the drive motor (31) to drive the pressure plate (41) to bring the inner wall of the drilled hole close to the hole until the silty sand on the hole wall is compacted so that the drilled hole is not prone to collapse. S6. Lift the drill rod (2) out of the drilled hole.

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