An environmental emission auxiliary system for urban surface drilling and implementation method thereof

Abstract

The application discloses an environment-friendly emission auxiliary system and implementation method for urban surface drilling, which comprises a collecting head and a grading bin, the collecting head is used for collecting the mixture of sludge and water discharged by an orifice anchoring pipe and introducing the mixture into the grading bin; wherein the grading bin comprises a main bin, a flow guide plate one, a flow guide plate two and an overflow brush plate; the front end side wall of the main bin is connected with the collecting head; the flow guide plate one and the flow guide plate two are vertically inserted into the main bin near the front end and the rear end, and the lower ends are not in contact with the bottom plate of the main bin; the overflow brush plate is vertically inserted into the main bin and is located between the flow guide plate one and the flow guide plate two, and the lower end is tightly attached to the bottom of the grading bin; the flow guide plate one, the flow guide plate two and the overflow brush plate divide the main bin into three spaces connected with each other from front to back, so that the water flow forms an S-shaped flow path. By using the auxiliary system, the mixture of sludge and water discharged by drilling is collected, and the sludge and water are quickly separated through two-stage filtration and two-stage sedimentation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel engineering construction, and particularly relates to an environmental protection discharge auxiliary system for urban surface drilling and an implementation method. BACKGROUND

[0002] With the deepening of urbanization construction, in urban construction, the demand for surface drilling operation often occurs, such as geological exploration, survey point embedding, grouting reinforcement, etc. Since the surface drilling operation often uses water flushing or water and air linkage process to discharge the spoil, that is, water or water + high pressure air is injected into the drill rod, and is blown out from the drill bit to return to the surface hole from the bottom of the hole, in this process, the spoil and slurry are easy to overflow and flow horizontally on the ground, polluting the road surface, green belt, residential area, etc., and bringing adverse effects to urban life and landscape; and if not fully treated, directly discharged into the urban sewage pipeline, it is more likely to cause blockage of the urban sewage system, and bring hidden dangers to the urban drainage function.

[0003] The conventional construction method is to use sandbags to set up cofferdams to guide the slurry and spoil to be collected, and after sedimentation and drying, the slurry and spoil are treated separately, but this method occupies a large area, and it is difficult to find a suitable position to set up a water collecting pit on the urban road surface, and once the number of drill holes is large, it is very inconvenient to change and extend the cofferdams, and in the actual drilling construction process, the discharge of sewage and waste is often very extensive, which brings great adverse effects to the urban environment, residents' life and urban drainage system. SUMMARY

[0004] The purpose of the present application is to provide an environmental protection discharge auxiliary system for urban surface drilling and an implementation method, which conveniently disposes the hole of the surface drilling, uses a movable container trolley to collect the slurry mixture discharged from the drilling, and quickly separates the spoil and water after two-stage filtration and two-stage sedimentation, and then disposes them respectively.

[0005] The present application adopts the following technical scheme: an environmental protection discharge auxiliary system for urban surface drilling, comprising: a hole mouth anchoring pipe, a material collecting head and a grading bin, the material collecting head is used for collecting the slurry and spoil mixture discharged from the hole mouth anchoring pipe and introducing it into the grading bin; wherein:

[0006] The grading bin comprises: a main bin, a first flow guide plate, a second flow guide plate and an overflow brush plate, wherein:

[0007] The main bin is connected in communication with the material collecting head at the front end side wall thereof;

[0008] The first flow guide plate and the second flow guide plate are both rectangular steel plates, the width of each plate is matched with the width of the main bin, and the vertical height of each plate is less than that of the main bin, each plate is vertically inserted into the main bin near the front end and the rear end, and the lower end of each plate is not in contact with the bottom plate of the main bin, and a flow channel is formed between each plate and the bottom plate;

[0009] The overflow brush plate is vertically inserted into the main chamber, located between the first and second diversion plates. It is close to the first diversion plate and its height is less than the height of the first and second diversion plates. Its lower end is tightly fitted to the bottom of the grading chamber, so that the water flowing out from the front flow channel flows through it from above.

[0010] The first diversion plate, the second diversion plate, and the overflow brush plate divide the main chamber into three interconnected spaces from front to back, so that the water flow forms an S-shaped flow path for the sedimentation of filter residue during the water flow process.

[0011] A water pump system is installed at the rear of the main compartment to discharge the treated wastewater.

[0012] Furthermore, the overflow brush plate has dense bristles on the side wall facing the first diversion plate, with the bristles pointing towards the first diversion plate and the distal ends of the bristles attached to the side wall of the first diversion plate; the bristles are used for secondary filtration and slowing down the dispersed water flow during the upward flow of water.

[0013] Furthermore, the collecting head includes a collecting basin, a sliding inlet, and a blowout preventer, wherein:

[0014] The material collection basin has a front sidewall connected to the grading bin, and its bottom and top have openings on the same axis for the drill bit to pass through vertically.

[0015] The material discharge port is located at the connection point between the discharge port and the grading bin, and is flared. A sandbag is installed at the material discharge port inside the grading bin.

[0016] The blowout preventer consists of two mirror-symmetrical caps, which are fastened together by the front and rear sides of the material collection basin. The bottom end is locked to the bottom outer wall of the material collection basin, and a circular hole is formed at the top for the drill rod to pass through. The hole and the circular opening are on the same axis.

[0017] Furthermore, the orifice anchoring pipe includes: a lifting pipe, a limiting disc, and an expansion fluid bladder, wherein:

[0018] The material lifting pipe has its lower end vertically inserted into the formation borehole and its upper end standing above the ground surface. It is coaxially sleeved through the bottom opening of the material collection basin and is sealed and fitted to the edge of the opening.

[0019] The limiting disc is a circular steel disc, coaxially sleeved and welded to the outside of the lifting pipe, and located at the ground surface;

[0020] The expansion bladder is a water-fillable rubber bladder that is wrapped around the lower part of the lifting pipe that is inserted into the formation. The expansion bladder is used to inject water to expand and seal the gap between the lifting pipe and the borehole wall.

[0021] Furthermore, a horizontal sandbag support plate is installed in front of the main compartment and at the front of the diversion plate. The sandbag support plate is at the same horizontal height as the lower end of the diversion plate. The upper part of the sandbag support plate is used to support sandbags. A primary sedimentation space is formed between the sandbag support plate and the bottom of the main compartment below. The primary sedimentation space is connected to the flow channel.

[0022] Furthermore, the sandbag support plate, the first diversion plate, the second diversion plate, and the overflow brush plate are all connected to the main chamber via corresponding plug-in tracks. The plug-in tracks include: three pairs of vertical plug-in slots arranged at intervals from front to back on the inner walls of the left and right sides of the main chamber; and symmetrical horizontal load-bearing bars are provided at the front of the plug-in slots located near the bottom and at the front end on the inner walls of the two sides of the main chamber, with the rear end of the load-bearing bars tightly attached to the front plug-in slots.

[0023] Furthermore, three trapezoidal steel plates are installed at the left, right, and bottom edges of the material discharge port, and inside the grading chamber. The short side of each trapezoidal steel plate is connected to the edge of the material discharge port. All three trapezoidal steel plates are inclined toward the inner wall of the grading chamber on their respective sides, forming an flared discharge end with a downward slope at the bottom.

[0024] Furthermore, there are two blowout preventers, which are mirror-symmetrical. Each blowout preventer includes a top plate covering the top opening of the material collection basin. The shape of the top plate is the same as the shape of the top opening of the material collection basin. The top plate has a U-shaped groove with the opening facing the opposite blowout preventer. The two top plates are stacked one on top of the other, and a circular hole is formed at the U-shaped groove. The diameter of the hole is the same as the inner diameter of the lifting pipe, which is used to pass through the drill rod and drill bit, and is in the same straight line as the circular opening. Each top plate is connected to an L-shaped pull plate at the end away from the U-shaped groove opening, and the opening side of the L-shaped pull plate is consistent with the opening side of the U-shaped groove. The height of the L-shaped pull plate is consistent with the height of the material collection basin, and its bottom is locked to the bottom of the material collection basin.

[0025] Furthermore, a fastening compass and a sealing ring are stacked on the top and bottom of the material gathering basin on the material lifting pipe. The inner diameter of the fastening compass and the sealing ring are consistent with the outer diameter of the material lifting pipe, and the sealing ring is attached to the wall of the bottom of the material gathering basin. The fastening compass is threadedly connected to the material lifting pipe.

[0026] The present invention also discloses an implementation method for the above-mentioned environmental protection emission auxiliary system for urban surface drilling, the implementation method being as follows:

[0027] Step 1: Drill a hole at the designated location, insert the lower end of the lifting pipe along with the expansion bladder into the hole until the limiting plate touches the ground, and inject water into the expansion bladder to make it expand and fill the gap between the lifting pipe and the hole wall.

[0028] Step 2: Connect the collecting head and the grading bin in sequence, and put the sandbags on the material discharge port;

[0029] Step three, the drill bit through the blowout preventer cover and the poly material basin in turn, into the material lifting pipe, drill down, the hole up to the mud mixture;

[0030] The mud mixture flows through the material lifting pipe in turn, into the poly material basin, at the same time is limited by the blowout preventer cover, through the sliding material port into the sandbag, carries out the first stage filtration, the mud mixture containing fine slag flows out, is blocked by the guide plate, passes through the first stage sedimentation space under the sandbag support plate, flows into the flow-through channel under the guide plate, the mud mixture passes through the bristles upward, carries out the second stage filtration, the mud mixture containing fine mud powder particles passes through the top end of the overflow brush plate 35, flows into the rear end of the main body bin through the flow-through channel under the guide plate two; when the water level reaches the starting water level sensor (43-1) at the top of the water pump cover, the water pump is opened, and the treated sewage in the main body bin is pumped out.

[0031] The beneficial effects of the present application are: 1. In the process of surface drilling operation, the water treatment can be completed while the mud water is collected and discharged, avoiding pollution to the urban environment. 2. The guide plate one, the guide plate two and the overflow brush plate divide the main body bin into three interconnected spaces from front to back, so that the water flow forms an S-shaped flow path from bottom to top and then to bottom; the side wall of the overflow brush plate facing the guide plate one is adhered with dense brush hairs made of hard plastic material, so that the water flow flows right down and up through the brush hairs, forming an upward water flow filtration, which is beneficial to the retention and falling of the filter residue, reducing the blockage and maintenance. 3. The sandbag is sleeved on the sliding material port, and the mud water mixture passes through the sandbag, and the large particle mud and sand is retained in the sandbag, completing the first stage filtration. 4. The treated water can continue to be injected into the drill pipe to wash the slag, realizing the recycling. 5. Flexible movement, simple and fast operation, without affecting the construction progress; simple structure, low cost, easy maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is an appearance view of an environmental protection discharge auxiliary system for urban surface drilling;

[0033] Figure 2 It is a perspective view of an environmental protection discharge auxiliary system for urban surface drilling;

[0034] Figure 3 It is an exploded view of an environmental protection discharge auxiliary system for urban surface drilling;

[0035] Figure 4 It is a main body sectional view of an environmental protection discharge auxiliary system for urban surface drilling;

[0036] Figure 5 It is a main body view of an environmental protection discharge auxiliary system for urban surface drilling;

[0037] Figure 6 It is a main body assembly sectional view of an environmental protection discharge auxiliary system for urban surface drilling;

[0038] Figure 7 A schematic diagram of an environmental emission auxiliary system for urban surface drilling;

[0039] 1. orifice anchoring pipe; 11. material lifting pipe; 12. limiting disc; 13. expansion liquid bag; 14. fastening compass; 15. sealing ring;

[0040] 2. material collecting head; 21. material collecting basin; 22. material sliding opening; 23. blowout prevention plug; 24. needle hanging;

[0041] 3. grading bin; 31. main bin body; 32. plug-in track; 33. sandbag supporting plate; 34-1. drainage plate one; 34-2. drainage plate two; 35. overflow brush plate;

[0042] 4. water pump system; 41. water pump; 42. water pump cover; 43-1. starting water level sensor; 43-2. closing water level sensor;

[0043] 5. sewage outlet; 6. walking wheel; 7. traction push handle; 8. sandbag. DETAILED DESCRIPTION

[0044] The present application will be described in detail below in conjunction with the drawings and specific embodiments.

[0045] The present application discloses an environmental emission auxiliary system for urban surface drilling, as shown in Figure 1 and 2 includes: orifice anchoring pipe 1, material collecting head 2, grading bin 3, water pump system 4 and sandbag 8; wherein:

[0046] The orifice anchoring pipe 1 is used to seal the orifice of the surface drilling and lift the discharge mud water to a set height, i.e. more than 40 cm; it includes: material lifting pipe 11, limiting disc 12, expansion liquid bag 13, fastening compass 14 and sealing ring 15, wherein:

[0047] The material lifting pipe 11 is a seamless steel pipe with a diameter not less than 130 mm, the lower end is vertically inserted into the stratum drilling hole with an insertion length of about 60 cm, the upper end is erected above the ground surface with a length above the ground surface not less than 40 cm; the upper end is provided with external threads for connecting the material collecting head 2;

[0048] The expansion liquid bag 13 is a water-injection rubber bag, which is wrapped around the part of the material lifting pipe 11 inserted into the stratum and inserted into the stratum together, with a length not less than 50 cm, for water injection expansion, quick sealing of the gap between the material lifting pipe 11 and the drilling hole wall, and drainage and removal after the drilling is completed for recycling;

[0049] The limiting plate 12 is a circular steel plate, coaxially sleeved and welded to the outside of the lifting pipe 11. Specifically, it is located in the middle of the lifting pipe 11 and above the ground surface, attached to the ground surface. It is used to limit the insertion depth of the lifting pipe 11 into the stratum and the vertical height on the ground surface so that the height of the collecting head 2 can be matched with each drilling.

[0050] like Figure 3 As shown, the collecting head 2 is used to collect the slag-slurry mixture drawn from the lifting pipe 11 and guide it into the grading bin 3; it includes: a collecting basin 21, a sliding port 22, a blowout preventer cover 23, and a hanging needle 24, wherein:

[0051] The material collection basin 21 is made of thin-walled steel plate. The bottom projection shape of the basin is a combination of semicircle and rectangle from front to back. The height of the basin wall is not less than 20cm. The side wall of one end of the rectangle is open and connected to the grading bin 3 to guide the flow of mud-water mixture. A circular opening is set at the center of the bottom of the basin. The diameter of the opening is consistent with the outer diameter of the lifting pipe 11 and is used to be fitted on the upper end of the lifting pipe 11.

[0052] The fastening compass 14 is a flat nut with an inner thread that matches the thread at the upper end of the lifting tube 11. There are two nuts in total, one fitted onto the upper end of the lifting tube 11, with one located at the bottom inside the material collection basin 21 and the other attached to the bottom outer wall of the material collection basin 21.

[0053] The sealing ring 15 is a circular rubber gasket with an inner diameter that matches the outer diameter of the lifting pipe 11. There are two of them, each placed between a fastening compass 14 and a material collection basin 21, for sealing and preventing leakage.

[0054] The material discharge port 22 is located at its connection with the classifying chamber 3. Three trapezoidal thin-walled steel plates are installed at the left, right and bottom edges of the material discharge port 22 and inside the classifying chamber 3. The shorter side is connected to the material discharge port 22. All three trapezoidal thin-walled steel plates are inclined towards the inner wall of the classifying chamber 3 on their respective sides to form a flared opening with a downward slope at the bottom. The flared opening is designed to guide the discharged mud-water mixture to fall into the classifying chamber 3, avoiding siltation and blockage.

[0055] There are two anti-blowout covers 23, which are mirror-symmetrical. Each anti-blowout cover 23 includes a top plate covering the top opening of the material collection basin 21. The shape of the top plate is the same as the shape of the top opening of the material collection basin 21. The top plate has a U-shaped groove with the opening facing the opposite anti-blowout cover 23. The two top plates are stacked one on top of the other, and a circular hole is formed at the U-shaped groove. The diameter of the hole is the same as the inner diameter of the lifting pipe 11, which is used to pass through the drill rod and drill bit, and is in the same straight line as the circular opening. Each top plate is connected to an L-shaped pull plate at the end away from the U-shaped groove opening, and the opening side of the L-shaped pull plate is consistent with the opening side of the U-shaped groove. The height of the L-shaped pull plate is consistent with the height of the material collection basin 21, and its bottom is used to hold the bottom of the material collection basin 21 to prevent the mud and water from splashing and shifting vertically.

[0056] Hanging needle 24 consists of two short steel needles with pointed ends facing upwards, which are vertically welded to the upper sides of the material outlet 22 and are used to hang and temporarily fix the sandbag 8.

[0057] like Figure 4 As shown in Figures 5 and 6, the grading bin 3 is used to receive and rapidly process the mud-water mixture discharged from the collection head 2, separating the slag and water; it includes: a main bin 31, a plug-in track 32, a sandbag support plate 33, a first diversion plate 34-1, a second diversion plate 34-2, and an overflow brush plate 35; wherein:

[0058] The main silo 31 is a rectangular silo welded from thin-walled steel plates, about 1m long and about 0.5m high. Its width is greater than that of the material discharge port. The specific width is determined based on a combination of volume and ease of movement. The main silo 31 is matched and welded to the material discharge port 22 of the material collection head 2 to receive the collected mud-water mixture into the silo.

[0059] The insertion track 32 consists of steel strips of various sizes, welded or bonded to the inner walls of both sides of the main body compartment 31. Along the length of the main body compartment 31, it forms three pairs of vertically spaced insertion slots from front to back. The middle pair of insertion slots is close to the front pair of insertion slots. Symmetrical horizontal load-bearing bars are provided at the front of the insertion slots located near the bottom and at the frontmost part on the inner walls of both sides of the main body compartment 31, and the rear end of the load-bearing bars is tightly attached to the front insertion slot.

[0060] Both the first diversion plate 34-1 and the second diversion plate 34-2 are rectangular steel plates, with a width matching the width of the main chamber 31 and a vertical height less than the main chamber 31. They are vertically inserted into the front and rear insertion slots within the main chamber 31, respectively. The lower ends of the first diversion plate 34-1 and the second diversion plate 34-2 do not contact the bottom plate of the main chamber 31, forming a flow channel to force water to flow from the bottom. Their distance from the bottom plate of the main chamber 31 is the same as the distance between the horizontal weighing bar and the bottom plate. For example, if the height of the first diversion plate 34-1 and the second diversion plate 34-2 is 10cm less than the height of the main chamber 31, and their upper ends are flush with the upper end of the main chamber 31, then their lower ends are 10cm from the bottom of the main chamber 31. Both the first diversion plate 34-1 and the second diversion plate 34-2 have handles on their upper parts for easy insertion and removal.

[0061] The sandbag support plate 33 is a steel rectangular plate with a matrix of circular holes. It is horizontally set inside the main body 31 and placed on the horizontal load-bearing bar in the insertion track 32 to support the sandbags 8. The rear end of the sandbag support plate 33 is tightly attached to the diversion plate 34-1. The sandbag support plate 33 and the bottom of the main body 31 form a bottom-level sedimentation space.

[0062] Overflow brush plate 35, vertically inserted into the main body bin 31, and located in the plug-in slot between the drainage plate one 34-1 and the drainage plate two 34-2, which is a rectangular steel plate with a width matching the width of the main body bin 31, and the lower end is closely attached to the bottom of the main body bin 31, and the upper end is located at the middle position of the drainage plate one 34-1, such as the height of the overflow brush plate 35 is 20 cm, forcing the water flow to flow from above, which is located between the drainage plate one 34-1 and the drainage plate two 34-2, the three are combined, so that the water flow forms an S-shaped flow route;

[0063] The side wall of the overflow brush plate 35 facing the drainage plate one 34-1 is pasted with dense brush hairs made of hard plastic material, the brush hairs point to the drainage plate one 34-1, and the distal end of the brush hairs is attached to the side wall of the drainage plate one 34-1; The brush hairs are set for secondary filtration and dispersion of water flow, which facilitates better sedimentation of the next stage of powder particles; The brush hairs should point to the drainage plate one 34-1 to form an upward water flow filtration, which is beneficial to the retention and falling of filter residue and reduces the blockage; If the brush hairs point to the drainage plate two 34-2, it is a downward water flow filtration, and the filter residue will continuously accumulate on the brush hairs, blocking the water flow or reducing the filtration effect, which should be paid attention to during installation and construction.

[0064] Water pump system 4 for automatically pumping the treated secondary sewage in the grading bin 3, which contains a small amount of fine mud powder particles, can be directly discharged, or can be recycled for drilling and slag flushing; It includes: water pump 41, water pump sleeve 42, starting water level sensor 43-1 and closing water level sensor 43-2;

[0065] Water pump sleeve 42, which is a long rectangular container made of thin steel plate, is located at the rear end of the drainage plate two 34-2, and is vertically welded on the side wall of the rear end of the main body bin 31, the lower end is more than 10 cm away from the bottom of the main body bin to avoid sucking the bottom sediment powder, the bottom of the water pump sleeve 42 is provided with two opposite side holes for the water pump 41 to suck water;

[0066] Water pump 41, which is a submersible pump, is arranged in the water pump sleeve 42, and its power is greater than that of the water pump for flushing slag in drilling operation, so as to avoid the speed of the mud water mixture flowing into the main body bin 31 being greater than the pumping speed, causing overflow and environmental pollution;

[0067] Starting water level sensor 43-1 and closing water level sensor 43-2 are arranged at the top and bottom of the water pump sleeve 42 respectively; for sensing water level, controlling the switch of the water pump 41;

[0068] Sewage outlet 5 is arranged on the side wall of the rear end of the main body bin 31 and located near the bottom, the sewage outlet 5 is welded with a seamless steel pipe and provided with a ball valve switch for discharging the residual water in the main body bin after the construction is completed;

[0069] The walking wheels 6 are small wheels, two groups, arranged on the left and right sides of the bottom of the grading bin 3, used to move the grading bin 3 to the designated position; under the premise of meeting the terrain obstacle crossing ability, the walking wheels 6 are preferably small in diameter to reduce the overall height of the system;

[0070] The traction pusher 7 is a metal pusher, which is not limited in shape, welded on the outer side wall of the left and right of the grading bin 3, used for manual pushing and pulling or mechanical traction, to move the grading bin 3 to the designated position;

[0071] The sand bag 8 is a commonly used bag for holding on the construction site, which can be a plastic woven bag or a cloth bag, used for preliminary filtering of the mud-water mixture and holding the separated muck.

[0072] The application also discloses an implementation method of the environment-friendly emission auxiliary system for urban surface drilling.

[0073] Step one, installing the hole anchoring pipe 1: drilling according to the hole position determined by the design, inserting the lower end of the material lifting pipe 11 together with the expansion liquid bag 13 into the hole until the limiting disc 12 is attached to the ground, injecting water into the expansion liquid bag 13 to make it expand and fill the gap between the material lifting pipe 11 and the hole wall;

[0074] Step two, connecting the material collecting head 2 and the grading bin 3 in sequence, and sleeving the sand bag 8 on the material sliding opening 22;

[0075] Step three, passing the drill bit through the blowout prevention plug 23 and the material collecting basin 21 in sequence, into the material lifting pipe 11, and drilling downward, and the mud-water mixture in the hole is discharged upward;

[0076] The mud-water mixture flows through the material lifting pipe 11 in sequence, into the material collecting basin 21, is limited by the blowout prevention plug 23, enters the sand bag 8 through the material sliding opening 22, and is subjected to primary filtration; the mud-water mixture containing fine slag is blocked by the drainage plate one 34-1, passes through the primary precipitation space below the sand bag supporting plate 33, flows into the flow-through channel below the drainage plate one 34-1, passes through the overflow brush plate 35, and the mud-water mixture passes through the bristles upward, subjected to secondary filtration; the mud-water mixture containing fine mud particles passes over the top end of the overflow brush plate 35, flows into the rear end of the main bin 31 through the flow-through channel below the drainage plate two 34-2; when the water level reaches the starting water level sensor 43-1 on the top of the water pump cover 42, the water pump 31 is started to pump out the treated sewage in the main bin 31.

[0077] During the field construction, the following is specifically implemented:

[0078] S1, installing the hole anchoring pipe 1:

[0079] According to the hole position determined by the design, a large-diameter drill bit with a diameter not less than 130 cm is used to drill a hole with a depth of 60 cm on the ground, and then the drill bit is withdrawn;

[0080] The lower end of the material lifting pipe 11 is inserted into the hole together with the expansion liquid bag 13 until the limiting disc 12 is attached to the ground and is flush with the ground. Water is injected into the expansion liquid bag 13 to make it expand and fill the gap between the material lifting pipe 11 and the hole wall, achieving the purpose of sealing;

[0081] Then a fastening disc 14 and a sealing ring 15 are sequentially sleeved on the upper end of the material lifting pipe 11;

[0082] S2, connecting the aggregate head 2:

[0083] The mobile device is moved to the designated position, the aggregate head 2 is lifted upwards, the bottom center hole of the aggregate basin 21 penetrates through the material lifting pipe 11, another sealing ring 15 and a fastening disc 14 are sequentially sleeved and adjusted in position, and under the premise that the four walking wheels 6 stably land on the ground, the fastening disc 14 and the sealing ring 15 firmly seal and connect the hole mouth anchor pipe 1 and the aggregate head 2;

[0084] Then the two anti-spray plug covers 23 are inserted from both sides of the aggregate basin 21, forming a circular hole in the middle for subsequent passage of the drill rod and drill bit;

[0085] S3, installing the grading bin 3:

[0086] The sandbag support plate 33 is first placed horizontally in the main bin 31, and then the drainage plate one 34-1, the overflow brush plate 35 and the drainage plate two 34-2 are sequentially inserted, forming an S-shaped waterway. The bristles of the overflow brush plate 35 need to point to the drainage plate one 34-1 to ensure the formation of upward water flow filtration;

[0087] Then the sandbag 8 is sleeved on the material sliding port 22, and the hanging needle 24 is pierced through the mouth of the sandbag 8 to temporarily hang it;

[0088] S4, drilling and discharging operation:

[0089] The small-diameter drill bit such as the diameter of 90 cm is sequentially inserted through the anti-spray plug cover 23 and the aggregate basin 21, enters the material lifting pipe 11, starts the drilling machine, rotates and drills downward, while supplying water and high-pressure air into the drill rod, and the mud-water mixture is ejected from the drill bit at the bottom of the hole and is reflected upward from the hole;

[0090] The slurry mixture flows through the material lifting pipe 11 in turn, enters the material gathering basin 21, is limited by the blowout preventer insert cover 23 to prevent splashing, and then enters the sandbag 8 through the material sliding port 22, is filtered by the sandbag 8 in the first stage, the coarse residue in the slurry mixture is retained in the sandbag 8, the slurry mixture containing fine mud sand flows out, is blocked by the flow guide plate one 34-1, passes through the sandbag supporting plate 33 to the bottom of the main body bin 31, and completes the first stage of sedimentation at the bottom under the auxiliary action of the overflow brush plate 35, and the fine residue in the slurry mixture is retained; then the slurry mixture bypasses the overflow brush plate 35 in an S-shaped route, is filtered by the bristles in the second stage and is delayed and dispersed by the water flow, most of the powder residue completes the second stage of sedimentation, and gradually accumulates on the side away from the water pump 31, at this time, the water near the water pump 31 contains only a small amount of fine mud powder particles, and the pollution hazard degree is greatly reduced.

[0091] With the continuous inflow of the slurry mixture, the water level in the grading bin 3 continuously rises, when the water level reaches the starting water level sensor 43-1 at the top of the water pump cover 42, the water pump 31 is started, and the treated secondary sewage in the main body bin 31 is pumped out and can be directly discharged into the municipal sewage system pipeline or can be recycled and used for drilling and residue flushing.

[0092] Since the power of the water pump 41 is greater than the power of the water pump for water injection and residue flushing in the drilling operation, the water pumping speed is greater than the inflow of the slurry mixture, so the water level gradually decreases, when it decreases to the closing water level sensor 43-2, the water pump 31 is closed and stops pumping, and the slurry mixture continues to flow in, the water level rises, and the cycle is repeated.

[0093] S5, operation process control:

[0094] During the drilling operation process, as the drilling depth increases, the drilling rod needs to be interrupted and lengthened, the two blowout preventer insert covers 23 can be temporarily removed for convenience.

[0095] During the drilling operation process, as the sandbag 8 is gradually filled, drilling can be temporarily stopped, the sandbag 8 and the coarse residue therein are taken out and transported away, and a new sandbag is replaced.

[0096] During the drilling operation process, if the content of fine particles in the slurry mixture is very high, a large amount of fine residue and powder residue is deposited, drilling can be temporarily stopped, the sandbag 8, the sandbag supporting plate 33, the flow guide plate one 34-1, the overflow brush plate 35 and the flow guide plate two 34-2 are taken out, the thick fine residue and powder residue accumulated at the bottom are quickly dug out with a shovel or other tools, the sandbag is transported away, the bristles of the overflow brush plate 35 are washed, and then S3 and S4 are repeated.

[0097] S6, drilling completion and reaming:

[0098] Drilling to the designed depth, stopping drilling, stopping water and high-pressure air supply, removing the two blowout preventer insert covers 23, and gradually withdrawing and disassembling the drilling rod.

[0099] In this process, the water pump 31 continues to work until the water level drops to the closing water level sensor 43-2; then remove the sandbag 8 and the coarse residue in it, remove the sandbag holder 33, the drainage plate 34-1, the overflow brush plate 35 and the drainage plate 34-2, so that the main body bin 31 is connected into a whole;

[0100] After this process, the drill is withdrawn, the water pump 31 is stopped, and in the static water state, after a long time of sedimentation, the residue and water are more fully separated;

[0101] S7, cleaning work:

[0102] With simple filter such as hemp, cotton or gauze, plug the pipe opening of the sewage pipe 5 in the main body bin 31, open the ball valve, and discharge a small amount of residual water in the main body bin 31; then use a shovel or other tools to quickly remove the residual fine and powder residue at the bottom, and transport them to another sandbag;

[0103] If the residual fine and powder residue in the main body bin 31 is very small after the drilling is completed, S7 can be omitted;

[0104] S8, next hole operation

[0105] Repeat S1-S7.

Claims

1. An environmentally friendly emission auxiliary system for surface drilling in urban areas, characterized in that, include: The orifice anchor pipe (1), the collecting head (2), and the grading bin (3) are provided. The collecting head (2) is used to collect the slag and mud mixture drawn out by the orifice anchor pipe (1) and introduce it into the grading bin (3). The graded compartment (3) includes: a main compartment (31), a first diversion plate (34-1), a second diversion plate (34-2), and an overflow brush plate (35), wherein: The front side wall of the main compartment (31) is connected to the material collection head (2); Both the first diversion plate (34-1) and the second diversion plate (34-2) are rectangular steel plates with widths matching the width of the main compartment (31) and vertical heights less than the main compartment (31). They are vertically inserted into the main compartment (31) near the front and rear ends, respectively. The lower ends of the first diversion plate (34-1) and the second diversion plate (34-2) do not contact the bottom plate of the main compartment (31), forming a flow channel between them. The overflow brush plate (35) is vertically inserted into the main body chamber (31) and located between the first diversion plate (34-1) and the second diversion plate (34-2). It is close to the first diversion plate (34-1) and its height is less than the height of the first diversion plate (34-1) and the second diversion plate (34-2). Its lower end is tightly attached to the bottom of the grading chamber (3) so that the water flowing out from the front flow channel flows through it from above. The first diversion plate (34-1), the second diversion plate (34-2), and the overflow brush plate (35) divide the main chamber (31) into three interconnected spaces from front to back, so that the water flow forms an S-shaped flow path for the sedimentation of filter residue during the water flow process; A water pump system (4) is installed at the rear end of the main compartment (31) to discharge the treated wastewater; The collecting head (2) includes a collecting basin (21), a sliding outlet (22), and a blowout preventer (23), wherein: The material collection basin (21) has its front side wall connected to the grading bin (3), and its bottom and top are provided with openings located on the same axis, which are used for the drill bit to pass through vertically. The material outlet (22) is located at the connection point between the material outlet (22) and the grading bin (3), and is flared. A sandbag (8) is installed inside the grading bin (3) at the material outlet (22). There are two anti-blowout plugs (23), which are mirror symmetrical and are fastened to each other by the front and rear sides of the material collection basin (21). The bottom end is stuck to the bottom outer wall of the material collection basin (21), and a circular hole is formed at the top for the drill rod to pass through. It is on the same axis as the circular opening. Each of the aforementioned blowout preventers (23) includes a top plate covering the top opening of the material collection basin (21), and the shape of the top plate is the same as the shape of the top opening of the material collection basin (21). The top plate has a U-shaped groove with the opening facing the opposite blowout preventer (23). The two top plates are stacked one on top of the other, and a circular hole is formed at the U-shaped groove. The diameter of the hole is the same as the inner diameter of the lifting pipe, which is used to pass through the drill rod and the drill bit, and is in the same straight line as the circular opening. Each of the top plates is connected to an L-shaped pull plate at the end away from the U-shaped groove opening, and the opening side of the L-shaped pull plate is consistent with the opening side of the U-shaped groove. The height of the L-shaped pull plate is consistent with the height of the material collection basin (21), and its bottom is held in place at the bottom of the material collection basin (21).

2. The environmentally friendly emission auxiliary system for urban surface drilling as described in claim 1, characterized in that, The overflow brush plate (35) is provided with dense bristles on the side wall facing the first diversion plate (34-1), the bristles pointing towards the first diversion plate (34-1), and the far ends of the bristles adhering to the side wall of the first diversion plate (34-1); the bristles are used for secondary filtration and slowing down the dispersed water flow during the upward flow of water.

3. The environmental protection emission auxiliary system for urban surface drilling as described in claim 2, characterized in that, The orifice anchoring pipe (1) includes: a lifting pipe (11), a limiting disc (12), and an expansion fluid bladder (13), wherein: The material lifting pipe (11) is vertically inserted into the formation borehole at its lower end and vertically erected above the ground surface at its upper end. It is coaxially sleeved through the bottom opening of the material gathering basin (21) and is sealed and fitted to the edge of the opening. The limiting plate (12) is a circular steel plate, coaxially sleeved and welded to the outside of the lifting pipe (11), and located at the ground surface; The expansion bladder (13) is a water-fillable rubber bladder that is wrapped around the lower part of the material lifting pipe (11) that is inserted into the formation and is inserted into the formation together. The expansion bladder (13) is used to inject water to expand and seal the gap between the material lifting pipe (11) and the borehole wall.

4. The environmentally friendly emission auxiliary system for urban surface drilling as described in claim 3, characterized in that, Inside the main chamber (31), and in front of the first diversion plate (34-1), a horizontal sandbag support plate (33) is provided. The lower end of the sandbag support plate (33) is at the same horizontal height as the lower end of the first diversion plate (34-1). The upper part of the sandbag support plate (33) is used to support the sandbag (8). It forms a primary sedimentation space with the bottom of the main chamber (31) below, and the primary sedimentation space is connected to the flow channel.

5. The environmentally friendly emission auxiliary system for urban surface drilling as described in claim 4, characterized in that, The sandbag support plate (33), the first diversion plate (34-1), the second diversion plate (34-2), and the overflow brush plate (35) are all connected to the main body compartment (31) through corresponding plug-in tracks (32); the plug-in tracks (32) include: three pairs of vertical plug-in slots arranged at intervals from front to back on the inner walls of the left and right sides of the main body compartment (31); and also include symmetrical horizontal load-bearing bars at the front of the plug-in slots near the lower part and at the front end on the inner walls of the two sides of the main body compartment (31), with the rear end of the load-bearing bars closely attached to the front plug-in slots.

6. The environmental protection emission auxiliary system for urban surface drilling as described in claim 5, characterized in that, Three trapezoidal steel plates are provided at the left, right and bottom edges of the material outlet (22) and inside the grading bin (3). The short side of each trapezoidal steel plate is connected to the edge of the material outlet (22). The three trapezoidal steel plates are inclined toward the inner wall of the grading bin (3) on their respective sides, forming an flared outlet with a downward slope at the bottom.

7. The environmentally friendly emission auxiliary system for urban surface drilling as described in claim 6, characterized in that, On the material lifting pipe (11), and on both the top and bottom of the material gathering basin (21), a fastening compass (14) and a sealing ring (15) are stacked. The inner diameter of the fastening compass (14) and the sealing ring (15) are consistent with the outer diameter of the material lifting pipe (11). The sealing ring (15) is attached to the wall of the bottom of the material gathering basin (21). The fastening compass (14) is threadedly connected to the material lifting pipe (11).

8. The implementation method of an environmental protection emission auxiliary system for urban surface drilling as described in any one of claims 3-7, characterized in that, The implementation method is as follows: Step 1: Drill a hole at the designated location, insert the lower end of the lifting pipe (11) along with the expansion bladder (13) into the hole until the limiting plate (12) touches the ground, inject water into the expansion bladder (13) to make it expand and fill the gap between the lifting pipe (11) and the hole wall. Step 2: Connect the collecting head (2) and the grading bin (3) in sequence, and put the sandbag (8) on the sliding port (22); Step 3: Pass the drill bit through the blowout preventer (23) and the material collection basin (21) in sequence, enter the material lifting pipe (11), drill downwards, and the mud-water mixture is pushed upwards from the hole; The mud-water mixture flows sequentially through the lifting pipe (11) and enters the aggregate basin (21). Simultaneously, it is restricted by the anti-spray plug (23) and enters the sandbag (8) through the sliding port (22) for primary filtration. The mud-water mixture containing fine slag flows out and is blocked by the first diversion plate (34-1). It then passes downward through the primary sedimentation space under the sandbag support plate (33) and flows into the flow channel under the first diversion plate (34-1). Through the overflow brush plate (35), the mud-water mixture passes upward through the brush bristles for secondary filtration. The mud-water mixture containing fine mud powder particles passes over the top of the overflow brush plate (35) and flows into the rear end of the main chamber (31) through the flow channel under the second diversion plate (34-2). When the water level reaches the start-up water level sensor (43-1) at the top of the water pump sleeve (42), the water pump is turned on and the treated sewage in the main chamber (31) is pumped out.

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