Drilling and grouting construction system

Abstract

The utility model relates to the technical field of construction equipment, more specifically to the construction system for drilling and grouting construction in the shaft, it includes: support frame, the support frame is connected with hydraulic feeding drive mechanism, it has the feeding movement part that moves to and fro, the feeding movement part is connected with hydraulic rotary drive mechanism, it has the rotary output part of output rotation torque, drilling tool has water hammer (such as high pressure water power downhole percussion hammer) and water hammer drill rod, grouting subassembly has grouting drill rod, the chuck is provided on the rotary output part, and water hammer drill rod has: the water hammer drill rod connecting portion that chuck holds fast, grouting drill rod has: the grouting drill rod connecting portion that chuck holds fast, through the water hammer drill rod connecting portion or grouting drill rod connecting portion can be detached and hold fast on chuck, to make: drive unit drives water hammer drill rod to rotate and feeds and carries out drilling, or, drive unit drives grouting drill rod to rotate and feeds and drills into grouting hole.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment technology, and more specifically to a construction system for drilling and grouting construction in vertical shafts. Background Technology

[0002] During vertical shaft tunnel construction, reinforcing the bottom of the shaft is a crucial step in ensuring construction safety and structural stability. Currently, high-pressure hydraulic down-the-hole impact hammers (or water hammer drill rods) and grouting equipment are used for drilling and grouting. The high-pressure hydraulic down-the-hole impact hammer mainly consists of a high-pressure water system, a water distribution valve, a piston (impact hammer), a cylinder, and a drill bit. Its working principle is as follows: the fluid power generated by the high-pressure water pump is delivered through the drill rod to the water distribution valve inside the impact hammer, driving the piston to perform high-frequency reciprocating motion within the cylinder. When the piston returns, the pressurized water accumulates energy, and when the piston strikes, its enormous kinetic energy is instantly transferred to the drill bit, thus producing a continuous impact and breaking action on the rock at the bottom of the hole. The entire process efficiently converts hydrodynamics into impact mechanical energy, significantly improving drilling efficiency in hard strata.

[0003] Due to the limited working space at the shaft working face, the existing reinforcement construction usually adopts the following process: First, the drilling equipment needs to be hoisted into the shaft using hoisting equipment, and the drilling equipment is used to complete the drilling operation at the bottom of the shaft; after the drilling is completed, the drilling equipment needs to be hoisted out of the shaft, and then the grouting equipment is hoisted into the shaft using hoisting equipment for subsequent grouting reinforcement work.

[0004] In actual construction, the frequent and complex hoisting operations not only significantly increased the complexity of the construction process and severely reduced the overall efficiency of the integrated drilling-grouting reinforcement construction, but also prolonged the construction cycle of the vertical shaft tunnel. Furthermore, it increased the risk of safety accidents such as equipment collisions and falls, posing a significant threat to the personal safety of construction personnel and the integrity of construction equipment. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a drilling grouting construction system. This system can reduce hoisting operations during drilling grouting, thereby improving the overall construction efficiency of drilling grouting and reducing the risk of accidents.

[0006] The overall technical solution of this utility model is as follows: This utility model addresses the problems of low overall efficiency and high safety risks in drilling and grouting operations in vertical shafts. Specifically: When performing drilling and grouting operations in a vertical shaft, the drilling equipment must first be hoisted into the shaft for drilling; then, the grouting equipment must be hoisted into the shaft for grouting. During this process, the supports and driving components of both the drilling and grouting equipment are very heavy, requiring considerable time for installation, hoisting, and dismantling. These multiple heavy-duty hoisting operations not only increase the complexity of the construction process and reduce overall efficiency but also increase the risk of accidents during hoisting, posing a significant safety hazard.

[0007] Based on this, the present invention proposes a drilling grouting construction system for drilling grouting construction in vertical shafts. This system can reduce hoisting operations during drilling grouting construction, thereby improving the overall construction efficiency of drilling grouting and reducing the risk of accidents.

[0008] Specifically, the drilling and grouting construction system of this utility model includes: A support frame is connected to a hydraulic feed drive mechanism, which has a feed moving part that performs reciprocating movement. The feed moving part is connected to a hydraulic rotary drive mechanism, which has a rotary output part that outputs rotational torque. The hydraulic feed drive mechanism and the hydraulic rotary drive mechanism together constitute a drive unit. A drilling tool for drilling to form a grouting hole, comprising: a water hammer drill rod, and a water hammer connected to the end of the water hammer drill rod; Grouting assembly, comprising: a grouting drill rod inserted into a grouting hole for grouting; A chuck is provided on the rotary output section, which is configured to: detachably clamp and secure the drill rod, and drive the clamped drill rod to rotate synchronously with the rotary output section; The water hammer drill rod has a water hammer drill rod connecting part for clamping and fastening by a chuck; The grouting drill rod has a grouting drill rod connection part for clamping and fastening by a chuck; that is, the water hammer drill rod and the grouting drill rod have parts of the same or similar diameter that can be clamped and fastened by the same chuck. By detachably clamping and securing the water hammer drill rod connection or grouting drill rod connection to the chuck, so that: The drive unit drives the water hammer drill rod to rotate and feed it to the ground for drilling. Alternatively, the drive unit can rotate the grouting drill rod to feed it into the grouting hole.

[0009] The drilling and grouting construction system provided by this utility model includes a drive unit that can connect both water hammer drill rods and grouting drill rods, and can drive both drill rods separately. This allows for the following: when using this drilling and grouting construction system to perform drilling and grouting construction in a vertical shaft, only the support frame and drive unit need to be hoisted into the shaft. Drilling and grouting can then be performed separately by changing the drill rods, eliminating the need for multiple hoisting operations. This reduces the number of times heavy equipment (support frame and drive unit) needs to be hoisted, installed, and disassembled, simplifying the construction process, improving overall construction efficiency, and reducing the safety risks associated with multiple heavy hoisting operations.

[0010] In some embodiments, the drilling tool further includes: A flow-blocking sleeve is fitted around the outer periphery of the water hammer drill rod. Its lower end is used to insert into the grouting hole formed by the drilled hole of the water hammer drill rod, and its upper end is provided with a sealing structure to seal the gap between the flow-blocking sleeve and the water hammer drill rod. Furthermore, the flow-blocking sleeve is configured to be movably connected to the water hammer drill rod so that the water hammer drill rod can rotate and propel relative to the flow-blocking sleeve; A slag discharge pipe connected to the flow-blocking sleeve has one end connected to the internal channel of the flow-blocking sleeve to guide the fluid in the slag discharge pipe outward. By setting up the flow-blocking sleeve and slag discharge pipe, the flow-blocking sleeve can prevent high-pressure groundwater from gushing upward and causing water inrush accidents during drilling, and can also discharge the drill slag, avoid water accumulation in the well, reduce the time for secondary cleaning and drainage, and improve construction safety and efficiency.

[0011] In some embodiments, the drilling tool further includes: The static filtration box has a static filtration cavity formed inside it. The side wall of the static filtration chamber has a liquid inlet communicating with the static filtration chamber; The upper wall of the static filtration chamber has a liquid outlet that communicates with the static filtration chamber; The other end of the sludge discharge pipe is connected to the liquid inlet, and the liquid outlet is connected to a drain pipe that discharges the liquid outwards. The static filter box provides a filtration function (heavy sediment settles at the bottom of the static filter chamber, while water and other liquids flow upwards, forming a filter). The sludge is received through the liquid inlet, the static filter chamber separates solids and liquids, and the filtered liquid is discharged through the liquid outlet. This reduces environmental pollution, facilitates waste management and treatment, and improves the environmental friendliness and sustainability of the system.

[0012] Furthermore, in some embodiments, the outlet and the drain pipe are connected via a connecting passage equipped with a one-way valve that allows liquid to flow only from the outlet to the drain pipe. The installation of the one-way valve ensures that liquid can only flow unidirectionally from the outlet to the drain pipe, preventing backflow, maintaining the unidirectionality and stability of the filtration system, and improving reliability and processing efficiency.

[0013] Furthermore, in some embodiments, the sidewall or bottom wall of the static filtration chamber is provided with a slag discharge port, and a slag discharge cover plate is detachably fixed to the static filtration box to seal the slag discharge port. The slag discharge port and the detachable slag discharge cover plate allow for periodic removal of solid waste, maintain the filtration capacity of the static filtration box, extend the service life of the equipment, reduce maintenance costs and time, and improve the continuity of construction.

[0014] In some embodiments, the grouting assembly includes: A grout plugging sleeve is fitted around the grouting drill rod. Its lower end is used to insert into the grouting hole formed by the water hammer drill rod. The upper end is provided with a sealing structure to seal the gap between the grout plugging sleeve and the grouting drill rod. Furthermore, the plugging sleeve is configured to be movably connected to the grouting drill rod, allowing the drill rod to rotate and advance relative to the plugging sleeve. During grouting, the stop plug can be inserted into the grouting hole, providing an internal seal to prevent grout from overflowing upwards, ensuring the airtightness and pressure maintenance of the grouting process, improving grouting efficiency and quality, and reducing material waste.

[0015] In some embodiments, the water hammer drill rod has a hollow cavity with a water delivery channel, and the water supply flows from the tail end of the water hammer drill rod to the water hammer, driving the water hammer to impact the drill bit to break the rock and drill a hole. The grouting drill rod has a cavity inside which grouting channels are formed. The grouting fluid flows from the tail end of the grouting drill rod to the grout stop plug outlet of the grouting drill rod and enters the grouting hole. Under the pressure of the grouting pump, the grouting fluid penetrates into the rock strata fissures. A water injection pipe is installed inside or outside the grouting rod to deliver pressurized water into the grout stop plug, causing it to expand and seal against the hole wall. The drilling grouting system also includes: a liquid inlet pipe; One end of the inlet pipe has an inlet for liquid to flow in, and the other end is connected to a rotary joint. The rotary joint includes a part that rotates relative to the inlet pipe, the part having an outlet for liquid to flow out, and a connecting part. The tail end of the water hammer drill rod has a water hammer drill rod docking part that is detachably connected to the connecting part, and the water hammer drill rod is configured such that when the water hammer drill rod docking part is connected to the connecting part, the water delivery channel is connected to the liquid outlet. The tail end of the grouting drill rod has a grouting drill rod docking part that is detachably connected to the connecting part, and the grouting drill rod is configured such that when the grouting drill rod docking part is connected to the connecting part, the grouting channel is connected to the liquid outlet.

[0016] By using the inlet pipe, rotary joint, and channels inside the drill rod, a single inlet pipe can supply water to the water hammer drill rod and grout to the grouting drill rod during drilling and grouting respectively, reducing the number of pipes required and simplifying the overall structure of the system.

[0017] In some embodiments, the drilling grouting construction system also includes a hydraulic pump station having an oil tank for containing pressurized oil. The oil tank is connected to the hydraulic feed drive mechanism through a first oil delivery structure (composed of a motor-driven hydraulic oil pump and a high-pressure water pump (high-pressure grouting pump), etc.), and provides the hydraulic feed drive mechanism with the pressure oil required for the movement of the feed moving part. The oil tank is connected to the hydraulic rotary drive mechanism via a second oil delivery structure (comprising a motor-driven hydraulic oil pump and a high-pressure water pump (high-pressure grouting pump), etc.), providing the hydraulic rotary drive mechanism with the pressurized oil required for the rotation of the output section. A single hydraulic pump station simultaneously supplies hydraulic power to both the hydraulic feed drive mechanism and the hydraulic rotary drive mechanism, reducing the required number of hydraulic pump stations and simplifying the overall system structure.

[0018] During drilling with water hammer drills, the demand for high-pressure water flow is greater than the demand for grout flow during grouting. During drilling, multiple high-pressure grouting pumps can be operated in parallel to output high-pressure water, which is then combined and driven through the inlet pipe and water hammer drill rod to impact the borehole. During grouting, one of the grouting pumps outputs high-pressure grout through the inlet pipe, grouting rod, grout stop plug, and grouting hole to inject grout into the rock fissures.

[0019] In some embodiments, a chuck is provided on the lower end face of the rotating output section; The chuck is a hydraulic chuck, which has an insertion hole extending vertically for inserting the drill rod; The rotating output section has a clearance hole that aligns with the insertion hole, allowing the upper end of the drill rod inserted into the insertion hole to pass upward through the clearance hole. The central axis of the clearance hole is collinear with the rotation center line of the rotating output section. The use of a hydraulic chuck better ensures precise alignment and secure clamping of the drill rod, improving clamping reliability and construction safety, and reducing operational risks.

[0020] Furthermore, in some embodiments, the chuck includes: A bushing, which is fixedly connected to the rotating output part, and has a first insertion hole; The bushing also has a slidably mounted clamping block at one end of the first socket, which is configured to slide radially along the first socket; Several clamp blocks surround a insertion channel, which connects with the first insertion hole to form an insertion hole for inserting a drill rod. The bushing also has a positioning portion extending around a plurality of clamping blocks, with an insertion space between the positioning portion and the clamping blocks; A cylinder liner slidably mounted on a bushing is configured to reciprocate axially in a first insertion hole and has a push top for insertion into the insertion space. In the direction from the cylinder liner to the insert channel, the thickness of the pusher head gradually decreases; The chuck also includes a resilient disc spring, which is compressed between the bushing and the cylinder liner to apply an elastic force to the cylinder liner to drive the pusher head into the insertion space to push several jaws together to clamp the drill pipe. In the axial direction of the first insertion hole, there is a spaced portion between the bushing and the cylinder liner, which forms a hydraulic chamber and is connected to a hydraulic interface for supplying hydraulic oil into the hydraulic chamber. By injecting hydraulic oil into the hydraulic chamber, the cylinder liner is pushed to move in a way that compresses the disc spring, releasing the clamping force of the tongs on the drill rod.

[0021] By using disc springs to provide normally closed clamping force and hydraulic chambers to control release, the drill pipe can be quickly clamped and released, improving replacement efficiency, ensuring the stability and safety of clamping force, and reducing operational intensity and time.

[0022] The main beneficial effects of the above technical solution are as follows: This utility model's drilling and grouting construction system, by setting up a support frame, a drive unit (including a hydraulic feed drive mechanism and a hydraulic rotary drive mechanism), drilling tools, and grouting components, and utilizing a chuck to detachably clamp water hammer drill rods or grouting drill rods, enables the same drive unit to complete both drilling and grouting processes. This design significantly reduces the number of times heavy equipment (support frame, drive unit) needs to be hoisted during vertical shaft construction, simplifies the construction process, thereby improving the overall construction efficiency of drilling and grouting, and reducing the safety risks associated with multiple hoisting operations. Furthermore, the system's integrated design enhances operational convenience and reliability, making it suitable for the demanding requirements of vertical shaft environments.

[0023] Furthermore, considering existing cutting drilling technology, drilling speed in hard rock is slow, drill bit wear and consumption are high, costs are high, and drilling may even fail. Existing pneumatic down-the-hole hammer drilling technology consumes a lot of compressed air, with a drilling speed of approximately 0.1~0.3 m / min and a maximum drilling depth of approximately 30 meters, making drilling impossible in water-rich strata. This utility model uses high-pressure hydraulic down-the-hole hammer drilling, which can achieve a drilling speed of 0.2~1.0 m / min even in hard rock and water-rich geological conditions; the single-hole drilling depth exceeds 200 meters; it has a superior drilling effect; and, combined with the slag-water separation cylinder, drainage during drilling and groundwater seepage within the hole can be directly discharged to the surface, avoiding large amounts of water accumulation in the shaft, reducing drainage pressure, lowering the risk of equipment being submerged by water inflow in the shaft, and improving construction safety. Attached Figure Description

[0024] The present invention will be further described below with reference to the figures: Figure 1 This is a schematic diagram of the drilling and grouting construction system.

[0025] Figure 2 This is a schematic diagram of the drilling tool installation.

[0026] Figure 3 This is a schematic diagram of the grouting assembly installation.

[0027] Figure 4 This is a schematic diagram of the chuck clamping structure.

[0028] Figure 5 This is a schematic diagram of the drilling tool.

[0029] Figure 6 This is a schematic diagram of the grouting assembly.

[0030] Figure 7 This is a schematic diagram of the drilling grouting construction system during drilling.

[0031] Figure 8 This is a schematic diagram of the drilling grouting construction system during grouting. Detailed Implementation

[0032] The present invention will be illustrated with specific examples below: Example:

[0033] The drilling and grouting construction system is mainly used for drilling and grouting processes in vertical shaft a.

[0034] like Figures 1 to 3 As shown, the drilling and grouting construction system in this embodiment includes: a support frame 1, a hydraulic feed drive mechanism 2, a hydraulic rotary drive mechanism 3, a drill bit, a grouting assembly, and a chuck 6.

[0035] Among them, the support frame 1 is a frame structure composed of several rods and plates for support.

[0036] The hydraulic feed drive mechanism 2 is a mechanism that realizes linear feed through a hydraulic system. It is connected to the support frame 1 and has a feed moving part that performs reciprocating movements. For example, the hydraulic feed drive mechanism 2 is a hydraulic cylinder with a telescopic rod, and the piston rod that performs telescopic movements forms a feed moving part.

[0037] The hydraulic rotary drive mechanism 3 is a mechanism that outputs rotational torque through a hydraulic system. It is connected to the feed moving part and has a rotational output part for outputting rotational torque. For example, the hydraulic rotary drive mechanism 3 is a hydraulic motor (such as a gear motor or piston motor) connected to the feed moving part. It has a rotating shaft for outputting rotational torque, and the rotating shaft forms a rotational output part.

[0038] In this embodiment, as Figure 1 As shown, the drilling grouting construction system also includes a hydraulic pump station 16, which has an oil tank for containing pressurized oil.

[0039] The oil tank is connected to the hydraulic feed drive mechanism 2 via a first oil delivery structure, and provides the hydraulic feed drive mechanism 2 with the pressurized oil required for the movement of the feed moving part. This first oil delivery structure refers to a complete hydraulic circuit that delivers pressurized oil from the oil tank of the hydraulic pump station 16 to the hydraulic feed drive mechanism 2, and includes: a pipeline connecting the oil tank and the hydraulic feed drive mechanism 2, and a hydraulic pump that delivers hydraulic oil from the oil tank to the hydraulic feed drive mechanism 2.

[0040] The oil tank is connected to the hydraulic rotary drive mechanism 3 via a second oil delivery structure, and provides the hydraulic rotary drive mechanism 3 with the pressurized oil required for the rotation of the rotary output section. This second oil delivery structure refers to a complete hydraulic circuit that delivers pressurized oil from the oil tank of the hydraulic pump station 16 to the hydraulic rotary drive mechanism 3, and includes: pipelines connecting the oil tank and the hydraulic rotary drive mechanism 3, and a hydraulic pump that delivers hydraulic oil from the oil tank to the hydraulic rotary drive mechanism 3.

[0041] Hydraulic oil is supplied to the hydraulic feed drive mechanism 2 and the hydraulic rotary drive mechanism 3 by the hydraulic pump station 16, so that the hydraulic feed drive mechanism 2 drives the hydraulic rotary drive mechanism 3 to move up and down, and the rotary output part in the hydraulic rotary drive mechanism 3 rotates to realize the rotary feed of the rotary output part.

[0042] The hydraulic feed drive mechanism 2 and the hydraulic rotary drive mechanism 3 together constitute a drive unit.

[0043] Drilling tools used to drill holes to form grouting holes, such as Figure 2 As shown, it has: a water hammer drill rod 4, and a water hammer 21 connected to the end of the water hammer drill rod 4.

[0044] Specifically, the water hammer 21 is a high-pressure hydrodynamic down-the-hole impact hammer commonly used in existing drilling rigs, such as a high-energy hydrodynamic down-the-hole impact hammer based on impact rotary drilling technology disclosed in publication number CN116241174B, or other similar water hammer structures.

[0045] Grouting components, such as Figure 2 As shown, it includes a grouting drill rod 5 that is inserted into a grouting hole for grouting. The grouting drill rod 5 is a hollow rod with a drill bit at its lower end.

[0046] To meet the clamping requirements of the water hammer drill rod 4 and the grouting drill rod 5, a chuck 6 is provided on the rotating output part. It is configured to: detachably clamp and secure the drill rod, and drive the clamped drill rod to rotate synchronously with the rotating output part.

[0047] Meanwhile, the water hammer drill rod 4 has a water hammer drill rod connecting part 4.1 for clamping and fastening by the chuck 6; the grouting drill rod 5 has a grouting drill rod connecting part 5.1 for clamping and fastening by the chuck 6.

[0048] By detachably clamping and securing the water hammer drill rod connection 4.1 to the chuck 6, the drive unit can drive the water hammer drill rod 4 to rotate and feed to drill a hole to form a grouting hole b.

[0049] By detachably clamping and securing the grouting drill rod connection 5.1 to the chuck 6, the drive unit can drive the grouting drill rod 5 to rotate and feed into the grouting hole b for subsequent grouting procedures.

[0050] In this embodiment, as Figure 4 As shown, a chuck 6 is provided on the lower end face of the rotating output part; the chuck 6 is a hydraulic chuck commonly used in drilling rigs to clamp and fasten drill rods, and it has: an insertion hole 6.1 extending vertically for inserting drill rods.

[0051] Meanwhile, the rotating output section has a clearance hole 3.1, which is vertically aligned with the insertion hole 6.1 so that the upper end of the drill rod inserted into the insertion hole 6.1 can pass upward through the clearance hole 3.1, and the central axis of the clearance hole 3.1 is aligned with the rotation center line of the rotating output section (e.g., Figure 4 (As shown by the vertical dashed line) are arranged collinearly. When the rotating output unit rotates around the rotation center line, it synchronously drives the chuck 6 and the drill rod held by the chuck 6 to rotate.

[0052] In this embodiment, as Figure 4 As shown, the chuck 6 includes: bushing 6.2, clamp block 6.3, cylinder liner 6.4, and disc spring 6.5.

[0053] The upper end of the bushing 6.2 is fixed to the rotating output part by, for example, a screw, and has a first insertion hole 6.21 for inserting a drill rod (water hammer drill rod 4 or grouting drill rod 5). The lower end of the bushing 6.2 is also slidably mounted with a clamping block 6.3 by, for example, a slide rail structure. The clamping block 6.3 is located at the lower end of the first insertion hole 6.21 and is configured to slide radially along the first insertion hole 6.21.

[0054] Several clamping blocks 6.3 are provided, and the clamping blocks 6.3 surround each other to form an insertion channel 6.31. This insertion channel 6.31 connects and mates with the first insertion hole 6.21 to collectively form an insertion hole 6.1 for inserting the drill rod. At this time, as... Figure 4As shown, when a drill rod (water hammer drill rod 4 or grouting drill rod 5) is inserted into the insertion hole 6.1, the drill rod can be clamped and fixed by driving the clamp block 6.3 to slide towards the drill rod; the clamping effect on the drill rod can be released by driving the clamp block 6.3 away from the drill rod, so that the drill rod can be pulled out from the insertion hole 6.1 for replacement.

[0055] In this embodiment, the clamp 6.3 is driven by a disc spring 6.5 and a hydraulic structure.

[0056] like Figure 4 As shown, the bushing 6.2 also has a positioning portion 6.22 extending around a plurality of clamping blocks 6.3, with an annular insertion space between the positioning portion 6.22 and the clamping blocks 6.3.

[0057] A cylinder liner 6.4 is slidably mounted in the bushing 6.2, reciprocating axially in the first insertion hole 6.21, and having a pusher 6.41 for insertion into the insertion space. The pusher 6.41 is an annular structure arranged around a plurality of clamping blocks 6.3 and capable of fitting into the insertion space.

[0058] In the direction from cylinder liner 6.4 to insert passage 6.31 (e.g.) Figure 4 (From top to bottom), the thickness h of the top 6.41 gradually decreases.

[0059] The disc spring 6.5 is an elastic component, such as a spring; it is compressed and placed between the bushing 6.2 and the cylinder liner 6.4 to apply an elastic force to the cylinder liner 6.4 to drive the pusher 6.41 into the insertion space. As the thickness of the pusher 6.41 in the insertion space increases, it pushes several clamping blocks 6.3 to move closer to each other and clamps the drill rod, thus completing the clamping and fastening of the drill rod.

[0060] like Figure 4 As shown, in the axial direction of the first insertion hole 6.21, there is a spaced portion between the bushing 6.2 and the cylinder liner 6.4, which forms a hydraulic chamber 6.6, connected to a hydraulic interface 6.61 for supplying hydraulic oil into the hydraulic chamber 6.6. By connecting the hydraulic interface 6.61 to an external hydraulic structure, such as the aforementioned hydraulic pump station 16, and injecting hydraulic oil into the hydraulic chamber 6.6 from the hydraulic interface 6.61, the cylinder liner 6.4 is pushed to compress the disc spring 6.5, thereby causing the pusher 6.41 to move in the pull-out direction from the insertion space, releasing the pusher 6.3, and thus releasing the clamping effect of the clamp 6.3 on the drill rod; allowing the drill rod (water hammer drill rod 4 or grouting drill rod 5) to be pulled out from the insertion hole 6.1 for replacement.

[0061] For drilling tools: like Figure 5As shown, the drilling tool may also include: a flow-blocking sleeve 7 fitted around the outer periphery of the water hammer drill rod 4, the lower end of which is used to insert into the grouting hole formed by the drilling of the water hammer drill rod 4, and the upper end is provided with a sealing structure to seal the gap between the flow-blocking sleeve 7 and the water hammer drill rod 4; and the flow-blocking sleeve 7 is configured to be movably connected to the water hammer drill rod 4 so that the water hammer drill rod 4 can rotate relative to the flow-blocking sleeve 7.

[0062] For example, the upper end of the flow-blocking sleeve 7 has an opening that matches the outer diameter of the water hammer drill rod 4. The water hammer drill rod 4 is inserted into the flow-blocking sleeve 7 through this opening and can rotate and move vertically relative to the flow-blocking sleeve 7. Alternatively, the upper end of the flow-blocking sleeve 7 can be equipped with a rotary blowout preventer commonly used in drilling equipment. The rotary blowout preventer forms a sealing structure to prevent liquid from flowing out from the upper end of the flow-blocking sleeve 7.

[0063] The flow-blocking sleeve 7 is connected to a slag discharge pipe 8. One end of the slag discharge pipe 8 is connected to the internal channel of the flow-blocking sleeve 7, and the other end is used to guide the fluid formed by drilling (formed by the gushing of formation water when drilling to form grouting hole b, or by the mixing of drilling slag when water injection drilling is used) outward.

[0064] The drilling tool may also include a static filter box 9, which has a hollow cavity forming a static filter chamber 9.1. The side wall of the static filter chamber 9.1 has a liquid inlet 9.2 communicating with the static filter chamber 9.1; the upper wall of the static filter chamber 9.1 has a liquid outlet 9.3 communicating with the static filter chamber 9.1. The other end of the slag discharge pipe 8 is connected to the liquid inlet 9.2, and the liquid outlet 9.3 is connected to a drain pipe 10 for discharging the liquid out of the liquid outlet 9.3. At this time, the slag liquid in the slag discharge pipe 8 flows into the static filter chamber 9.1, the heavier sludge sinks to the bottom of the static filter chamber 9.1 under the action of gravity, and the remaining liquid water is discharged out from the liquid outlet 9.3 at the upper end of the static filter chamber 9.1.

[0065] The outlet 9.3 and the drain pipe 10 are connected by a connecting passage formed by a pipe structure. This connecting passage is equipped with a one-way valve 11 that only allows liquid to flow from the outlet 9.3 to the drain pipe 10.

[0066] The side wall or bottom wall of the static filtration chamber 9.1 may also be provided with a slag discharge port 9.4 for the objects in the static filtration chamber 9.1 to flow out, and a slag discharge cover plate 12 for sealing the slag discharge port 9.4 is detachably fixed to the static filtration chamber 9 by means of, for example, screws. By removing the slag discharge cover plate 12, the waste residue in the static filtration chamber 9.1 can be cleaned.

[0067] For grouting components: The grouting assembly may also include a plugging sleeve 13 fitted around the grouting drill rod 5, with its lower end for insertion into the grouting hole formed by the water hammer drill rod 4, and its upper end provided with a sealing structure for sealing the gap between the plugging sleeve (13) and the grouting drill rod (5); and the plugging sleeve 13 is configured to be movably connected to the grouting drill rod 5 so that the grouting drill rod 5 can rotate relative to the plugging sleeve 13. The specific structure of the plugging sleeve 13 can be set with reference to the flow-blocking sleeve 7 described above.

[0068] The specific structure of the water hammer drill rod 4 can be set according to the usage requirements.

[0069] In this embodiment, the water hammer drill rod 4 has a hollow cavity with a water supply channel. Water flows from the tail end of the water hammer drill rod 4 into the water hammer drill rod 4 to generate fluid power and drive the water hammer drill rod 4 to perform high-pressure water power downhole impact.

[0070] The grouting drill rod 5 has a cavity inside which grouting channels are formed, and the grouting fluid flows from the tail end of the grouting drill rod 5 to the drill bit of the grouting drill rod 5.

[0071] Furthermore, the drilling grouting construction system also includes a liquid inlet pipe 14; one end of the liquid inlet pipe 14 is formed with a liquid inlet for liquid to flow in, and the other end is connected to a rotary joint 15 commonly used in drilling rigs. The rotary joint 15 includes a part that rotates relative to the liquid inlet pipe 14, the part having a liquid outlet for liquid to flow out, and a connecting part.

[0072] For example, the rotary joint 15 in this embodiment can be the rotary joint disclosed in CN101949268B, whose rotatable upper joint has a portion in which the rotary joint 15 rotates relative to the liquid inlet pipe 14.

[0073] The tail end of the water hammer drill rod 4 has a water hammer drill rod mating part that can be detachably connected to the connecting part, and the water hammer drill rod 4 is configured such that when the water hammer drill rod mating part is connected to the connecting part, the water delivery channel is connected to the liquid outlet. For example, the connecting part is a protruding structure surrounding the liquid outlet, and its outer periphery is formed with external threads; the water hammer drill rod mating part is a water inlet that connects to the liquid outlet at the upper end of the water delivery channel, the water inlet opening is for the connecting part to be inserted, and it has internal threads that are screwed to the external threads; so that the water hammer drill rod 4 can be detachably connected to the rotary joint 15 through the threaded structure, and water in the liquid inlet pipe 14 can flow into the water delivery channel inside the water hammer drill rod 4 through the rotary joint 15.

[0074] The tail end of the grouting drill rod 5 has a grouting drill rod docking part that is detachably connected to the connecting part, and the grouting drill rod 5 is configured such that when the grouting drill rod docking part is connected to the connecting part, the grouting channel is connected to the liquid outlet. The grouting drill rod docking part is designed with reference to the water hammer drill rod docking part described above.

[0075] When using the drilling grouting construction system: First, the support frame 1, the drive unit (hydraulic feed drive mechanism 2 and hydraulic rotary drive mechanism 3) connected to the support frame 1, and the hydraulic pump station 16 are all hoisted into the vertical shaft a using a crane.

[0076] When drilling is required, such as Figure 7 As shown, the water hammer drill rod 4 is first installed on the chuck 6, and then the hydraulic pump station 16, the hydraulic feed drive mechanism 2 and the hydraulic rotary drive mechanism 3 are turned on to drive the water hammer drill rod 4 to rotate and feed, so as to drill a grouting hole b in the vertical shaft.

[0077] After drilling the grouting hole b, the water hammer drill rod 4 is removed from the chuck 6, and the grouting drill rod 5 is installed on the chuck 6. Then, the hydraulic pump station 16, the hydraulic feed drive mechanism 2 and the hydraulic rotary drive mechanism 3 are turned on to drive the grouting drill rod 5 to rotate and feed into the grouting hole b, and then the subsequent grouting action is carried out.

[0078] When a flow-blocking sleeve 7 is installed, the lower end of the flow-blocking sleeve 7 is inserted into the formation during drilling with the water hammer drill rod 4. Similarly, when a grout-blocking sleeve 13 is installed, the lower end of the grout-blocking sleeve 13 is inserted into the grouting hole b.

[0079] At this time, as Figure 7 As shown, the water hammer drill rod 4 has a water supply channel inside. When drilling, the rotary joint 15 is connected to the water hammer drill rod 4. At this time, the liquid inlet pipe 14 can be connected to the first pipe 17 and the second pipe 18. The first pipe 17 uses the first water pump 20 to input water from the water tank into the water hammer drill rod 4 through the pipe. The second pipe 18 uses the second water pump 19 to input water from the water tank into the water hammer drill rod 4 through the pipe to perform high-pressure water impact drilling.

[0080] After drilling is completed, when installing the grouting drill rod 5, the rotary joint 15 can be simultaneously removed from the water hammer drill rod 4 and installed on the grouting drill rod 5; at the same time, the second water pump 19 is connected to the slurry tank 21 storing the grouting liquid, and the second water pump 19 transports the slurry in the slurry tank 21 to the grouting drill rod 5 through the pipeline structure (second pipe 18, inlet pipe 14, rotary joint 15) to carry out the grouting process.

[0081] In the above process, water pumps can be selected according to specific needs, and one or more pumps can be used. For example, if the water flow rate required during water hammer drilling is greater than the grout flow rate during grouting, two or more grouting pumps can be connected in parallel to output high-pressure water to drive the water hammer; during grouting, one grouting pump can meet the grouting flow rate requirements.

[0082] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of the present utility model, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" in the description should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model according to the specific circumstances.

[0083] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A drilling and grouting construction system, comprising: A support frame (1) is connected to a hydraulic feed drive mechanism (2), which has a feed moving part that performs reciprocating movement. A hydraulic rotary drive mechanism (3) is connected to the feed moving part, which has a rotary output part that outputs rotational torque. The hydraulic feed drive mechanism (2) and the hydraulic rotary drive mechanism (3) together constitute a drive unit. A drilling tool for drilling to form a grouting hole has: a water hammer drill rod (4) and a water hammer (21) connected to the end of the water hammer drill rod (4). The grouting assembly has: a grouting drill rod (5) inserted into the grouting hole for grouting, the grouting drill rod (5) having a grout stop plug (20) on its outer periphery. Its features are: The rotating output section is provided with a chuck (6), which is configured to: detachably clamp and fasten the drill rod, and drive the clamped drill rod to rotate synchronously with the rotating output section; The water hammer drill rod (4) has a water hammer drill rod connecting part (4.1) for clamping and fastening by the chuck (6). The grouting drill rod (5) has a grouting drill rod connecting part (5.1) for clamping and fastening by the chuck (6). By detachably clamping and securing the water hammer drill rod connection (4.1) or the grouting drill rod connection (5.1) to the chuck (6), so that: The drive unit drives the water hammer drill rod (4) and the water hammer (21) to rotate and feed to perform drilling; Alternatively, the drive unit drives the grouting drill rod (5) to rotate and feed into the grouting hole.

2. The drilling grouting construction system according to claim 1, characterized in that: The drilling tool also includes: The flow-blocking sleeve (7) fitted on the water hammer drill rod (4) has its lower end for insertion into the grouting hole formed by the drilling of the water hammer drill rod (4), and its upper end is provided with a sealing structure to seal the gap between the flow-blocking sleeve (7) and the water hammer drill rod (4). Furthermore, the flow-blocking sleeve (7) is configured to be movably connected to the water hammer drill rod (4) so ​​that the water hammer drill rod (4) can rotate and propel relative to the flow-blocking sleeve (7); The slag discharge pipe (8) connected to the flow-blocking sleeve (7) has one end connected to the internal channel of the flow-blocking sleeve (7) to guide the fluid in the slag discharge pipe (8) outward.

3. The drilling grouting construction system according to claim 2, characterized in that: The drilling tool also includes: The static filter box (9) has a static filter cavity (9.1) formed inside it in a hollow cavity configuration. The side wall of the static filtration chamber (9.1) has an inlet (9.2) communicating with the static filtration chamber (9.1). The upper wall of the static filtration chamber (9.1) has a liquid outlet (9.3) communicating with the static filtration chamber (9.1). The other end of the slag discharge pipe (8) is connected to the liquid inlet (9.2), and the liquid outlet (9.3) is connected to a drain pipe (10) that discharges the liquid from the liquid outlet (9.3) outward.

4. The drilling grouting construction system according to claim 3, characterized in that: The outlet (9.3) is connected to the drain pipe (10) through a connection passage, which is provided with a one-way valve (11) that only allows liquid to flow from the outlet (9.3) to the drain pipe (10).

5. The drilling grouting construction system according to claim 4, characterized in that: The side wall or bottom wall of the static filter chamber (9.1) is provided with a slag discharge port (9.4), and the static filter box (9) is detachably fixed with a slag discharge cover plate (12) for sealing the slag discharge port (9.4).

6. The drilling grouting construction system according to claim 1, characterized in that: The grouting assembly includes: The grout plugging sleeve (13) fitted on the grouting drill rod (5) has its lower end for insertion into the grouting hole formed by the water hammer drill rod (4), and its upper end is provided with a sealing structure for sealing the gap between the grout plugging sleeve (13) and the grouting drill rod (5); Furthermore, the grouting sleeve (13) is configured to be movably connected to the grouting drill rod (5) so that the grouting drill rod (5) can rotate and advance relative to the grouting sleeve (13).

7. The drilling grouting construction system according to any one of claims 1 to 5, characterized in that: The water hammer drill rod (4) has a hollow cavity with a water conveying channel, which allows high-pressure water to flow from the tail end of the water hammer drill rod (4) to the water hammer (21). The drilling grouting construction system also includes: a liquid inlet pipe (14). One end of the inlet pipe (14) is formed with an inlet for liquid to flow in, and the other end is connected to a rotary joint (15). The rotary joint (15) includes a part that rotates relative to the inlet pipe (14), the part having an outlet for liquid to flow out, and a connecting part. The tail end of the water hammer drill rod (4) has a water hammer drill rod docking part that is detachably connected to the connecting part, and the water hammer drill rod (4) is configured such that when the water hammer drill rod docking part is connected to the connecting part, the water conveying channel inside the water hammer drill rod (4) is connected to the liquid outlet. The tail end of the grouting drill rod (5) has a grouting drill rod docking part that is detachably connected to the connecting part, and the grouting drill rod (5) is configured such that when the grouting drill rod docking part is connected to the connecting part, the grouting channel inside the grouting drill rod (5) is connected to the liquid outlet.

8. The drilling grouting construction system according to claim 6, characterized in that: The drilling and grouting construction system also includes a hydraulic pump station (16), which has an oil tank for holding pressurized oil. The oil tank is connected to the hydraulic feed drive mechanism (2) through a first oil delivery structure, and provides the hydraulic feed drive mechanism (2) with the pressure oil required for the movement of the feed moving part; The oil tank is connected to the hydraulic rotary drive mechanism (3) through a second oil delivery structure, and provides the hydraulic rotary drive mechanism (3) with the pressure oil required for the rotation of the rotary output section.

9. The drilling grouting construction system according to claim 1, characterized in that: The chuck (6) is provided on the lower end surface of the rotating output section. The chuck (6) is a hydraulic chuck, which has an insertion hole (6.1) extending vertically and for inserting the drill rod. The rotating output section has a clearance hole (3.1) which is aligned with the insertion hole (6.1) so that the upper end of the drill rod inserted in the insertion hole (6.1) can pass upward through the clearance hole (3.1), and the central axis of the clearance hole (3.1) is collinear with the rotation center line of the rotating output section.

10. The drilling grouting construction system according to claim 9, characterized in that: The chuck (6) includes: A bushing (6.2) is fixedly connected to the rotating output part and has a first insertion hole (6.21). The bushing (6.2) is also slidably fitted with a clamp (6.3) located at one end of the first insertion hole (6.21), which is configured to slide along the radial direction of the first insertion hole (6.21); A plurality of the clamps (6.3) are arranged around a insertion channel (6.31), which is connected to the first insertion hole (6.21) to form the insertion hole (6.1) for inserting the drill rod. The bushing (6.2) also has a positioning portion (6.22) extending around a plurality of the clamps (6.3), and an insertion space is left between the positioning portion (6.22) and the clamps (6.3); A cylinder liner (6.4) slidably mounted on the bushing (6.2) is configured to reciprocate in the axial direction of the first insertion hole (6.21) and have a push head (6.41) inserted into the insertion space. In the direction from the cylinder liner (6.4) to the insert channel (6.31), the thickness of the pusher (6.41) gradually decreases; The chuck (6) also includes a resilient disc spring (6.5) which is compressed between the bushing (6.2) and the cylinder sleeve (6.4) to apply an elastic force to the cylinder sleeve (6.4) to drive the pusher (6.41) into the insertion space to push the plurality of the clamping blocks (6.3) together to clamp the drill rod. In the axial direction of the first insertion hole (6.21), there is a spaced portion between the bushing (6.2) and the cylinder liner (6.4), which forms a hydraulic chamber (6.6) and is connected to a hydraulic interface (6.61) for hydraulic oil to enter the hydraulic chamber (6.6). By injecting hydraulic oil into the hydraulic chamber (6.6), the cylinder liner (6.4) is pushed to move in a way that compresses the disc spring (6.5), thereby releasing the clamping effect of the pliers (6.3) on the drill pipe.

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