A device and method for draining accumulated water during shield tunnel excavation.

Abstract

This invention relates to the field of tunnel drainage technology, specifically a device and method for draining accumulated water during shield tunnel excavation. The invention includes a base plate and a water pump, with the water pump fixedly installed on the top surface of the base plate. It also includes an extension mechanism and a water level control mechanism. The extension mechanism is fixedly installed on the top surface of the base plate and is used to adjust the working position of the water level control mechanism. The water level control mechanism controls the water level in the drainage opening and includes a positioning component to allow it to be applied to drainage openings of different depths. This invention effectively treats accumulated water within the tunnel when facing drainage openings, and it avoids the problem of pump dry-drawing even when unattended. The positioning component in the water level control mechanism makes the invention applicable to drainage openings of different depths, improving its practicality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnel drainage, in particular to a water discharge device and method for water accumulation in shield tunneling. BACKGROUND

[0002] Shield tunnel is a tunnel excavated by shield method, which is a mechanized construction method that pushes the shield machine forward in the ground, supports the surrounding rock with the shield shell and the segment, prevents collapse into the tunnel, excavates the soil in front of the excavation face with a cutting device, removes it outside the hole with an earth removal machine, and assembles prefabricated concrete segments to form a tunnel structure.

[0003] During shield tunneling, water accumulation may occur due to seepage. To ensure the smooth progress of the tunneling project, the water needs to be cleaned up. The commonly used drainage method is to pump out the water by a water pump. However, due to construction, a large amount of silt may be mixed into the tunnel water, and the direct pumping method of the water pump may cause pipe blockage and damage to the water pump.

[0004] To solve the above problems, there is a tunnel high-efficiency water discharge device in the prior art, such as application number (202011354563.2), which comprises a push rod, a water discharge mechanism, a moving mechanism, a transfer mechanism, a processing cover, a filtering mechanism, a separation mechanism and a mounting box. The tunnel high-efficiency water discharge device directly connects the communication pipe and the water suction pipe, the impeller rotates at high speed to generate suction force to suck the mixed water into the isolation tank, and the stones and stones in the water are separated by the isolation net, thereby achieving the purpose of preventing damage and blockage of the discharge device by stones and stones.

[0005] However, in the process of tunneling, the water accumulation may be continuous live water, and the tunnel gushing phenomenon is generally caused by groundwater development. In the face of continuous live water, only relying on the water pump to drain cannot completely drain the water, and the construction in the tunnel is still disturbed. In addition, the isolation net may be blocked by a large amount of attachments during long-term use, thereby reducing the water pumping efficiency of the water pump and reducing the efficiency of water discharge work. Therefore, a water discharge device and method for water accumulation in shield tunneling are needed to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a water discharge device and method for water accumulation in shield tunneling to solve the problems raised in the background art.

[0007] The purpose of the present application can be achieved by the following technical solutions:

[0008] The utility model provides a kind of water discharge equipment for shield tunneling, including bottom plate and water pump, the water pump is fixedly installed on the top surface of bottom plate, the input end of water pump is fixedly connected with first water pipe, and the output end of water pump is fixedly connected with second water pipe;Further including extension mechanism and water level control mechanism, the extension mechanism is fixedly installed on the top surface of bottom plate, and extension mechanism is used to adjust the working position of water level control mechanism.

[0009] The water level control mechanism is used to control the water surface height in drainage hole, and the positioning assembly is arranged in the water level control mechanism, which is suitable for drainage holes of different depths.

[0010] Further, the extension mechanism includes an extension plate and a sliding assembly, the sliding assembly includes a second mounting seat, a first sliding rod, a first sliding block and a lead screw, the top surface of the bottom plate is fixedly installed with one second mounting seat near both ends, the two second mounting seats are arranged in parallel, the lead screw is rotatably installed between the two second mounting seats, one end of the lead screw rotatably penetrates the second mounting seat at the corresponding position and is fixedly installed with an adjusting hand wheel, two first sliding rods symmetrically arranged about the lead screw are fixedly connected between the two second mounting seats, the first sliding block is slidably installed on the two first sliding rods, and the first sliding block is threadedly connected with the lead screw.

[0011] The bottom surface of the extension plate is fixedly connected with the top surface of the first sliding block, the top surface of the extension plate is obliquely provided with two symmetrically arranged first mounting seats away from the adjusting hand wheel, the optical axis is dampingly rotatably connected between the two ends of the two first mounting seats away from the extension plate, the water level control mechanism is fixedly connected to the periphery of the optical axis, and the U-shaped clamping seat for limiting the water level control mechanism is fixedly installed on the top surface of the extension plate near the adjusting hand wheel.

[0012] Further, the bottom surface of the extension plate is fixedly installed with a sliding rail, the sliding rail is slidably connected between the second mounting seat away from the adjusting hand wheel, and the sliding rail is used to support the extension plate and has a guiding effect on the extension plate.

[0013] Further, the water level control mechanism includes a first mounting plate, the third mounting seat is fixedly installed on both sides of the first mounting plate near the corner, the second sliding rod is fixedly installed between the two third mounting seats on the same side, and a group of positioning assemblies are slidably installed on the two second sliding rods on the same side.

[0014] A plurality of positioning grooves for cooperating with the positioning assemblies are arranged on the both side surfaces of the first mounting plate along the center line in the length direction.

[0015] Further, the positioning assembly comprises a second sliding block, an extension rod and a positioning pin, the second sliding block is slidably arranged on the two second sliding rods on the same side, the positioning pin is slidably arranged through the second sliding block away from the center position of the first mounting plate, the connecting plate is fixedly arranged on the end of the positioning pin away from the first mounting plate, the two extension rods are fixedly connected between the connecting plate and the second sliding block and symmetrically arranged about the positioning pin, and the spring is fixedly connected between the connecting plate and the second sliding block and located at the periphery of the positioning pin, and the end of the positioning pin away from the connecting plate is inserted into the positioning groove on the corresponding side under the action of the spring.

[0016] The side of the connecting plate away from the first mounting plate is fixedly provided with a handle.

[0017] Further, the side of one of the second sliding blocks away from the optical axis is fixedly connected with a third sliding rod, and two fourth sliding rods are fixedly connected about the third sliding rod, the end of each of the fourth sliding rod and the third sliding rod away from the second sliding block is fixedly provided with a stop block, and a shielding piece is slidably arranged on the two fourth sliding rods.

[0018] A through slot is formed in one side of the shielding piece, and two linear bearings are fixedly arranged about the through slot, the two linear bearings are slidably arranged on the two fourth sliding rods, and the third sliding rod penetrates the shielding piece through the through slot.

[0019] The first sleeve and the second sleeve are dampingly slidably arranged on the third sliding rod, the surface of the first sleeve is fixedly provided with a photoelectric sensor one used in cooperation with the shielding piece, and the surface of the second sleeve is fixedly provided with a photoelectric sensor two used in cooperation with the shielding piece.

[0020] The two ends of the shielding piece are fixedly connected with connecting rods, the end of each of the connecting rods away from the shielding piece is directed away from the second sliding block, and the end of each of the connecting rods away from the shielding piece is fixedly connected with a float.

[0021] The first mounting plate is further provided with a control module, the control module is used for receiving the sensing signals of the photoelectric sensor one and the photoelectric sensor two and controlling the start and stop of the water pump.

[0022] Further, the side of the other second sliding block away from the optical axis is fixedly connected with a second mounting plate, the end of the outer side of the second mounting plate away from the second sliding block is fixedly provided with a filter head, a plurality of clamping seats are fixedly arranged on the outer side of the second mounting plate between the filter head and the second sliding block and arrayed along the length direction of the second mounting plate, the end of the first water pipe away from the water pump penetrates the plurality of clamping seats and is fixedly connected with the filter head, the clamping seat is used for fixing the periphery of the first water pipe, and the filter head is used for filtering the accumulated water entering the first water pipe.

[0023] Further, the filter head comprises a filter barrel, a connecting pipe and a cleaning assembly, a plurality of filter holes are uniformly arranged on the periphery of the filter barrel, one end of the filter barrel is fixedly connected with the connecting pipe in a penetrating manner, a fixing seat for fixedly connecting with the second mounting plate is arranged on the periphery of the connecting pipe, and the end of the connecting pipe away from the filter barrel is fixedly connected with the end of the first water pipe away from the water pump.

[0024] The cleaning assembly comprises a mounting disc, a rotating shaft, a mounting ring and turbine blades, the mounting disc is arranged inside the connecting pipe and coaxially arranged with the connecting pipe, a plurality of fixing rods are fixedly connected between the periphery of the mounting disc and the inner wall of the connecting pipe, the rotating shaft is rotatably arranged between the mounting disc and the inner end surface of the filter barrel away from the connecting pipe, the mounting ring is fixedly arranged on the periphery of the rotating shaft and located inside the connecting pipe, and a plurality of turbine blades are fixedly arranged on the periphery of the mounting ring in a circumferential direction.

[0025] A plurality of brush hairs are fixedly arranged on the periphery of the rotating shaft and located inside the filter barrel, and the end of the brush hair away from the rotating shaft is in sliding contact with the inner wall of the filter barrel.

[0026] Further, a group of supporting mechanisms are fixedly connected to the bottom surface of the bottom plate at positions close to the corners, the supporting mechanism comprises a threaded column, the top end of the threaded column is fixedly connected with the bottom surface of the bottom plate, a plurality of limiting grooves parallel to the axis of the threaded column are arranged on the periphery of the threaded column in a circumferential direction, and a knob is threadedly arranged on the periphery of the threaded column.

[0027] The periphery of the threaded column is sleeved with a lifting ring, the lifting ring is located below the knob and rotatably connected with the knob, a plurality of protrusions are fixedly arranged on the inner wall of the lifting ring in a circumferential direction, and the end of the protrusion away from the inner wall of the lifting ring is slidingly arranged in the limiting groove.

[0028] A plurality of insertion rods are fixedly connected to the bottom surface of the lifting ring and distributed in a circumferential direction about the axis of the lifting ring, and the end of the insertion rod away from the lifting ring is in a tapered structure.

[0029] Another object of the present application is to provide a drainage method of a water discharge device for a shield tunneling, comprising the following steps:

[0030] S1: cause analysis of the water gushing section;

[0031] It is determined that the tunnel water gushing phenomenon is caused by groundwater development;

[0032] S2: record the water outlet position, water volume, water gushing condition, change rule, supply source and water quality composition in the tunnel;

[0033] S3: When facing large-area water leakage, drill holes to divert the water into drainage holes, and record in detail the location, number, depth and leakage volume of the drill holes;

[0034] S4: Drainage;

[0035] S41: Place the present invention next to the drainage hole, and position the present invention in the working position by the support mechanism. Before drainage, extend the end of the second water pipe away from the water pump into the water tank of the water truck. The pumping rate of the water pump should be greater than the gushing rate.

[0036] S42: By adjusting the handwheel to rotate the lead screw, the lead screw drives the first slider to extend the end of the extension plate away from the adjusting handwheel towards the water surface above the drainage hole. Then, the first mounting plate is flipped so that the end of the first mounting plate away from the optical axis is above the water surface and perpendicular to the water surface. Next, a set of positioning components extends the filter head into the drainage hole so that the filter head touches the bottom. Then, it is manually started to pump out the accumulated water to a water level that does not affect the normal construction inside the tunnel. Then, another set of positioning components lowers the float to a state of contact with the water surface. Let the range of water surface height that does not affect the construction inside the tunnel be a to b. Then, when the water surface height is a, When the blocking component is in the state of blocking photoelectric sensor one, the control module receives the sensing signal from photoelectric sensor one and controls the water pump to stop pumping water. When the water level reaches b, the blocking component is in the state of blocking photoelectric sensor two. At this time, the control module receives the sensing signal from photoelectric sensor two and controls the water pump to start pumping water. This process is repeated to keep the water level in the drainage hole between a and b, so as not to affect the normal construction in the tunnel. This invention can be used to treat active water accumulation in tunnels, and during the treatment process, there is no need to manually control the start and stop of the water pump to prevent the water pump from drying out, which improves the convenience of drainage work.

[0037] S5: Leak sealing;

[0038] Generally, auxiliary construction methods such as pre-grouting with advanced small guide pipes can be used to plug the water inrush point;

[0039] S6: Transport the collected water out of the tunnel.

[0040] The beneficial effects of this invention are:

[0041] 1. When dealing with drainage holes, the present invention, through the setting of a water level control mechanism, can always keep the water level in the hole within a height range that does not affect the construction inside the tunnel. This facilitates the workers to plug leaks at water inflow points and ensures normal construction inside the tunnel, achieving the purpose of effectively treating active water accumulation inside the tunnel. Furthermore, the present invention will not cause the problem of water pump dry-suction even when unattended. The positioning component in the water level control mechanism makes the present invention applicable to drainage holes of different depths, improving the practicality of the present invention.

[0042] 2、The present application can effectively prevent the problem of the reduction of pumping rate caused by the clogging of the mesh due to the setting of the cleaning assembly in the filter head on the basis of the completion of the water accumulation filtration. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort;

[0044] Figure 1 is a three-dimensional structure schematic diagram of the whole of the present application Figure 1 ;

[0045] Figure 2 is a three-dimensional structure schematic diagram of the whole of the present application Figure 2 ;

[0046] Figure 3 is a three-dimensional structure schematic diagram of the water level control mechanism in the present application Figure 1 ;

[0047] Figure 4 is an enlarged view of part A in Figure 3 ;

[0048] Figure 5 is a three-dimensional structure schematic diagram of the connection relationship between the float and the shielding piece in the present application

[0049] Figure 6 is a three-dimensional structure schematic diagram of the water level control mechanism in the present application Figure 2 ;

[0050] Figure 7 is an enlarged view of part B in Figure 6 ;

[0051] Figure 8 is a three-dimensional structure schematic diagram of the filter head in the present application

[0052] Figure 9 is a three-dimensional structure schematic diagram of the inside of the filter head in the present application

[0053] Figure 10 is a three-dimensional structure schematic diagram of the support mechanism in the present application

[0054] Figure 11 is a three-dimensional structure schematic diagram of the lifting ring in the present application

[0055] The reference signs in the drawings are as follows:

[0056] 1-base plate, 2-first water pipe, 3-second water pipe, 4-water pump, 5-first mounting seat, 6-optical axis, 7-first mounting plate, 8-protruding plate, 9-second mounting seat, 10-adjusting hand wheel, 11-screw rod, 13-first sliding rod, 14-first sliding block, 15-supporting mechanism, 16-sliding rail, 17-floating, 18-third mounting seat, 19-U-shaped clamping piece, 20-filter head, 21-positioning assembly, 22-second sliding rod, 23-positioning groove, 24-second mounting plate, 25-first sleeve ring, 26-photoelectric sensor one, 27-third sliding rod, 28-fourth sliding rod, 29-connecting rod, 30-shielding piece, 31-second sleeve ring, 32-photoelectric sensor two, 33-through groove, 34-linear bearing, 35-clamping seat, 36-second sliding block, 37-spring, 38-positioning pin, 39-telescopic rod, 40-connecting plate, 41-pull handle, 42-filter barrel, 43-fixing seat, 44-connecting pipe, 45-brush, 46-rotating shaft, 47-worm gear blade, 48-mounting ring, 49-mounting disc, 50-fixing rod, 51-threaded column, 52-limiting groove, 53-knob, 54-lifting ring, 55-inserting rod, 56-protruding block. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0058] Embodiment 1

[0059] Please refer to Figures 1-7 In the embodiments of the present application, a water discharge device for shield tunneling includes a base plate 1 and a water pump 4. The water pump 4 is fixedly installed on the top surface of the base plate 1. The input end of the water pump 4 is fixedly connected with a first water pipe 2. The output end of the water pump 4 is fixedly connected with a second water pipe 3. The device further includes an extending mechanism and a water level control mechanism. The extending mechanism is fixedly installed on the top surface of the base plate 1. The extending mechanism is used to adjust the working position of the water level control mechanism.

[0060] The water level control mechanism is used to control the water surface height in the drainage hole. The water level control mechanism is provided with a positioning assembly 21. The positioning assembly 21 is used to adapt the water level control mechanism to drainage holes with different depths.

[0061] In the process of shield tunneling, water accumulation caused by seepage may be encountered, in order to ensure the smooth progress of the tunneling project, the water accumulation needs to be cleaned up; the commonly used drainage method at present is to pump out the water accumulation by a water pump, but a large amount of silt may be mixed in the tunnel water accumulation due to construction, and the method of directly pumping out the water accumulation by the water pump is prone to cause pipe blockage and damage to the water pump. In the prior art, stones and stones in the water accumulation are separated by a separation net, so as to prevent the damage and blockage of the discharge device by the stones and stones. However, in the process of tunneling, the water accumulation may be continuous live water, and the tunnel gushing phenomenon is generally caused by groundwater development; in the face of continuous live water, the water pump cannot drain the water accumulation, the construction in the tunnel is still disturbed, and a large amount of attachments may block the mesh holes of the separation net in the process of long-time use, thereby reducing the water pumping efficiency of the water pump and reducing the efficiency of the water accumulation drainage work.

[0062] When facing the drainage hole, the water surface in the hole can be controlled in the height range not affecting the construction in the tunnel by the setting of the water level control mechanism, the staff can conveniently carry out leakage treatment on the gushing point and normal construction in the tunnel, the active water in the tunnel is effectively treated, and the water pump 4 cannot be dry sucked in the case of no one guarding; the water level control mechanism is suitable for drainage holes of different depths by the setting of the positioning assembly 21, and the practicability of the water level control mechanism is improved; meanwhile, the cleaning assembly in the filter head 20 can effectively prevent the mesh holes from being blocked and causing the water pumping rate to be reduced on the basis of completing the water accumulation filtration.

[0063] The extension mechanism includes an extension plate 8 and a sliding assembly, the sliding assembly includes a second mounting seat 9, a first sliding rod 13, a first sliding block 14 and a lead screw 11, the top surface of the bottom plate 1 is fixedly provided with a second mounting seat 9 near both ends, the two second mounting seats 9 are parallel to each other, the lead screw 11 is rotatably installed between the two second mounting seats 9, one end of the lead screw 11 rotatably penetrates the second mounting seat 9 at the corresponding position and is fixedly provided with an adjusting hand wheel 10, the two second mounting seats 9 are also fixedly connected with two first sliding rods 13 symmetrically arranged about the lead screw 11, the first sliding block 14 is slidably installed on the two first sliding rods 13, and the first sliding block 14 is threadedly connected with the lead screw 11;

[0064] The bottom end of the extension plate 8 is fixedly connected with the top surface of the first sliding block 14, and two symmetrically arranged first mounting seats 5 are arranged on the top surface of the extension plate 8 at the end away from the adjusting hand wheel 10. The two first mounting seats 5 are rotatably connected with the optical shaft 6 between the ends away from the extension plate 8, the optical shaft 6 is fixedly connected with the water level control mechanism, and the U-shaped clamping seat 19 for limiting the water level control mechanism is fixedly installed on the top surface of the extension plate 8 at the end close to the adjusting hand wheel 10. By rotating the screw rod 11 through the adjusting hand wheel 10, the first sliding block 14 drives the extension plate 8 to extend to the above of the water surface of the drainage hole, so that the water level control mechanism extends into the drainage hole. The water level control mechanism and the extension plate 8 are connected in a hinged manner through the optical shaft 6, so that the application can be in a folded state when not working, the compactness of the structure is improved, the space occupancy is reduced, and the application is convenient to transport and store. The setting of the extension mechanism can adjust the action position of the water level control mechanism, and the use flexibility of the application is improved.

[0065] The bottom surface of the extension plate 8 is fixedly installed with a sliding rail 16, the sliding rail 16 is slidably connected between the second mounting seat 9 away from the adjusting hand wheel 10, and the sliding rail 16 is used for supporting the extension plate 8 and guiding the extension plate 8. In the sliding process of the extension plate 8, the sliding rail 16 supports and guides the extension plate 8, and the stability of the extension plate 8 in the working process is improved.

[0066] The water level control mechanism comprises a first mounting plate 7, third mounting seats 18 are fixedly installed on the two sides of the first mounting plate 7 close to the corners, second sliding rods 22 are fixedly installed between the two third mounting seats 18 on the same side, and a group of positioning assemblies 21 are slidably installed on the two second sliding rods 22 on the same side.

[0067] A plurality of positioning grooves 23 used in cooperation with the positioning assemblies 21 are arranged on the two side surfaces of the first mounting plate 7 along the center line in the length direction.

[0068] The positioning assembly 21 comprises a second sliding block 36, a telescopic rod 39 and a positioning pin 38, the second sliding block 36 is slidably installed on the two second sliding rods 22 on the same side, the positioning pin 38 is slidably penetrated through the center position on the side away from the first mounting plate 7 of the second sliding block 36, the connecting plate 40 is fixedly installed at the end of the positioning pin 38 away from the first mounting plate 7, the two telescopic rods 39 symmetrically arranged about the positioning pin 38 are fixedly connected between the connecting plate 40 and the second sliding block 36, the spring 37 located outside the positioning pin 38 is fixedly connected between the connecting plate 40 and the second sliding block 36, and the end of the positioning pin 38 away from the connecting plate 40 is inserted into a corresponding one of the positioning grooves 23 under the action of the spring 37.

[0069] A handle 41 is fixedly installed on the side of the connecting plate 40 away from the first mounting plate 7. When adjustment is needed, the connecting plate 40 is pulled by the handle 41, causing the end of the locating pin 38 away from the connecting plate 40 to separate from the locating groove 23. At this time, the position of the second slider 36 on the second slide rod 22 can be adjusted. After the adjustment is completed, the handle 41 is released, and under the contraction force of the spring 37, the locating pin 38 is reset, causing the locating pin 38 to re-insert into the corresponding locating groove 23, thus completing the repositioning of the second slider 36. By setting the adjustment mechanism, the working depth of the water level control mechanism can be adjusted, so that the present invention can be applied to drainage holes of different depths within a certain range, improving the practicality of the present invention.

[0070] Among them, a third slide rod 27 is fixedly connected to the side of a second slider 36 away from the optical axis 6, and two fourth slide rods 28 are fixedly connected about the third slide rod 27. A stop block is fixedly installed at the end of the fourth slide rod 28 and the third slide rod 27 away from the second slider 36. A blocking member 30 is slidably installed on the two fourth slide rods 28.

[0071] A through groove 33 is provided on one side of the shielding member 30, and two linear bearings 34 are symmetrically fixedly installed about the through groove 33. The two linear bearings 34 are slidably installed on the two fourth slide rods 28 respectively, and the third slide rod 27 passes through the shielding member 30 through the through groove 33.

[0072] The third slide bar 27 is damped and slidably mounted with a first collar 25 and a second collar 31. The surface of the first collar 25 is fixedly mounted with a photoelectric sensor 26 that works in conjunction with the shielding member 30. The surface of the second collar 31 is fixedly mounted with a photoelectric sensor 32 that works in conjunction with the shielding member 30.

[0073] Both ends of the blocking member 30 are fixedly connected to connecting rods 29. The end of the connecting rod 29 away from the blocking member 30 points away from the second slider 36, and the end of the connecting rod 29 away from the blocking member 30 is fixedly connected to a float 17.

[0074] The first mounting plate 7 is also equipped with a control module, which is used to receive the sensing signals from photoelectric sensor 1 26 and photoelectric sensor 2 32, and control the start and stop of water pump 4. First, the filter head 20 is inserted into the drainage hole through a set of positioning components 21, so that the filter head 20 touches the bottom. Then, the water pump 4 is manually started to pump out the accumulated water to a water level that does not affect the normal construction inside the tunnel. Then, the float 17 is lowered to a state of contact with the water surface through another set of positioning components 21. Let the water level height range that does not affect the construction inside the tunnel be a to b. When the water level height is a, the blocking component 30 is in a state of blocking the photoelectric sensor 26. At this time, the control module receives the sensing signal of the photoelectric sensor 26 and controls the water pump 4 to stop pumping water. Then, when the water level height reaches b, the blocking component 30 will be in a state of blocking the photoelectric sensor 32. At this time, the control module receives the sensing signal of the photoelectric sensor 32 and controls the water pump 4 to start pumping water. This process is repeated so that the water level in the drainage hole is always between a and b, without affecting the normal construction inside the tunnel.

[0075] One of the second sliders 36 is fixedly connected to a second mounting plate 24 on the side away from the optical axis 6. A filter head 20 is fixedly installed on the outer side of the second mounting plate 24 at the end away from the second slider 36. Multiple brackets 35 are fixedly installed on the outer side of the second mounting plate 24 between the filter head 20 and the second slider 36, arranged in an array along the length of the second mounting plate 24. The end of the first water pipe 2 away from the water pump 4 passes through the multiple brackets 35 and is fixedly connected to the filter head 20. The brackets 35 are used to fix the periphery of the first water pipe 2, and the filter head 20 is used to filter the water entering the first water pipe 2.

[0076] Example 2:

[0077] Please see Figure 6 , Figure 8 and Figure 9 Based on embodiment 1, the filter head 20 includes a filter barrel 42, a connecting pipe 44, and a cleaning assembly. The filter barrel 42 has a plurality of filter holes evenly opened on its periphery. One end of the filter barrel 42 is fixedly connected to the connecting pipe 44. The periphery of the connecting pipe 44 is provided with a fixing seat 43 for fixed connection with the second mounting plate 24. The end of the connecting pipe 44 away from the filter barrel 42 is fixedly connected to the end of the first water pipe 2 away from the water pump 4. The cleaning assembly is installed between the connecting pipe 44 and the filter barrel 42.

[0078] The cleaning assembly includes a mounting plate 49, a rotating shaft 46, a mounting ring 48, and turbine blades 47. The mounting plate 49 is located inside the connecting pipe 44 and is coaxially arranged with the connecting pipe 44. Multiple fixing rods 50 are fixedly connected between the outer periphery of the mounting plate 49 and the inner wall of the connecting pipe 44. The rotating shaft 46 is rotatably mounted between the mounting plate 49 and the inner end face of the filter bucket 42 away from the connecting pipe 44. The mounting ring 48 located inside the connecting pipe 44 is fixedly mounted on the outer periphery of the rotating shaft 46. Multiple turbine blades 47 are fixedly mounted circumferentially on the outer periphery of the mounting ring 48.

[0079] Multiple brush bristles 45 are evenly fixedly installed on the outer periphery of the rotating shaft 46, inside the filter barrel 42. The ends of the brush bristles 45 away from the rotating shaft 46 slide in contact with the inner wall of the filter barrel 42. During the water pumping process, the outer periphery of the filter barrel 42 filters and blocks impurities in the accumulated water. Then, when the water flows through the turbine blades 47 in the connecting pipe 44, the multiple turbine blades 47 are driven by force to rotate the rotating shaft 46. The rotation of the rotating shaft 46 drives the brush bristles 45 to continuously clean the inner wall of the fixed base 43, which can continuously sweep away the attached objects on the outer periphery of the filter barrel 42, effectively alleviating the problem of the attached objects clogging the filter holes on the outer periphery of the filter barrel 42.

[0080] Example 3:

[0081] Please see Figure 1 , Figure 2 , Figure 10 and Figure 11 Based on embodiment 2, a set of support mechanisms 15 are fixedly connected to the bottom surface of the base plate 1 near the corner. The support mechanism 15 includes a threaded column 51. The top of the threaded column 51 is fixedly connected to the bottom surface of the base plate 1. Multiple limiting grooves 52 are arranged in a circumferential array around the threaded column 51 and are parallel to the axis of the threaded column 51. A knob 53 is threadedly installed on the outer periphery of the threaded column 51.

[0082] A lifting ring 54 is sleeved around the threaded column 51. The lifting ring 54 is located below the knob 53 and is rotatably connected to the knob 53. Multiple protrusions 56 are fixedly installed circumferentially on the inner wall of the lifting ring 54. The ends of the multiple protrusions 56 away from the inner wall of the lifting ring 54 are slidably installed in multiple limiting grooves 52 respectively.

[0083] Multiple insertion rods 55 are fixedly connected to the bottom surface of the lifting ring 54. These insertion rods 55 are arranged in a circumferential array about the axis of the lifting ring 54, with the end of each insertion rod 55 furthest from the lifting ring 54 having a tapered structure. In the support mechanism 15, the tapered structure of the insertion rods 55 can hook into the ground, allowing the invention to be stably positioned in its working position, thus improving its stability during operation. Furthermore, when poor ground conditions prevent the base plate 1 from being placed horizontally, the lifting ring 54 can be raised and lowered via the knob 53. By adjusting the lifting positions of the four lifting rings 54 on their respective threaded posts 51, the base plate 1 can be adjusted to a more horizontal state, ensuring normal drainage. The support mechanism 15 further enhances the practicality of this invention.

[0084] Example 4:

[0085] Please see Figures 1-11 Based on Example 3, this example provides a detailed drainage method for a water drainage device used in shield tunnel excavation, including the following steps:

[0086] S1: Analysis of the causes of water inrush areas;

[0087] The tunnel water inrush phenomenon was determined to be caused by the development of groundwater.

[0088] S2: Record the location of water outlet, water volume, water inflow, change patterns, source of replenishment, and water composition within the tunnel;

[0089] S3: When facing large-area water leakage, drill holes to divert the water into drainage holes, and record in detail the location, number, depth and leakage volume of the drill holes;

[0090] S4: Drainage;

[0091] S41: Place the drainage device of the present invention next to the drainage hole, and position the present invention in the working position by the support mechanism. Before drainage, extend the end of the second water pipe 3 away from the water pump 4 into the water tank of the water truck. The pumping rate of the water pump 4 should be greater than the gushing rate.

[0092] S42: By adjusting the handwheel 10, the lead screw 11 is rotated. The lead screw 11 drives the first slider 14 to extend the end of the extension plate 8 away from the handwheel 10 towards the water surface above the drainage hole. Then, the first mounting plate 7 is flipped so that the end of the first mounting plate 7 away from the optical axis 6 is above the water surface and perpendicular to the water surface. Then, the filter head 20 is inserted into the drainage hole through a set of positioning components 21 so that the filter head 20 touches the bottom. Then, the water pump 4 is manually started to pump out the accumulated water to a water level that does not affect the normal construction inside the tunnel. Then, the float 17 is lowered to a state of contact with the water surface through another set of positioning components 21. Let the water level height range that does not affect the construction inside the tunnel be a to b. Then, when the water... When the water level is at height a, the blocking component 30 blocks the photoelectric sensor 26. At this time, the control module receives the sensing signal from the photoelectric sensor 26 and controls the water pump 4 to stop pumping water. When the water level reaches height b, the blocking component 30 blocks the photoelectric sensor 32. At this time, the control module receives the sensing signal from the photoelectric sensor 32 and controls the water pump 4 to start pumping water. This process is repeated to keep the water level in the drainage hole between a and b, so as not to affect the normal construction in the tunnel. This invention can be used to treat active water accumulation in the tunnel, and during the treatment process, it is not necessary to manually control the start and stop of the water pump 4 to prevent the water pump 4 from drying out, thus improving the convenience of drainage work.

[0093] S5: Leak sealing;

[0094] Generally, auxiliary construction methods such as pre-grouting with advanced small guide pipes can be used to plug the water inrush point;

[0095] S6: Transport the collected water out of the tunnel.

[0096] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A water discharge device for shield tunneling, comprising a base plate and a water pump, the water pump being fixedly installed on the top surface of the base plate, a first water pipe being fixedly connected to the input end of the water pump, and a second water pipe being fixedly connected to the output end of the water pump; characterized in that, the device further comprises an extension mechanism and a water level control mechanism, the extension mechanism being fixedly installed on the top surface of the base plate, and the water level control mechanism being hingedly connected to the extension mechanism, the extension mechanism being used for adjusting the working position of the water level control mechanism; the water level control mechanism is used for controlling the water surface height in the drainage hole, the water level control mechanism is provided with a positioning assembly, and the positioning assembly is used for adapting the water level control mechanism to drainage holes of different depths, the water level control mechanism comprises a first mounting plate, third mounting seats are fixedly installed on both sides of the first mounting plate at positions close to the corners, second sliding rods are fixedly installed between the two third mounting seats on the same side, and a group of positioning assemblies are slidingly installed on the two second sliding rods on the same side; a plurality of positioning grooves for cooperating with the positioning assemblies are arrayed on the both side surfaces of the first mounting plate along the center line in the length direction of the first mounting plate, the positioning assembly comprises a second sliding block, an extension rod and a positioning pin, the second sliding block is slidingly installed on the two second sliding rods on the same side, the positioning pin is slidingly penetrated through the center position on the side of the second sliding block away from the first mounting plate, a connecting plate is fixedly installed on the end of the positioning pin away from the first mounting plate, two extension rods symmetrically arranged about the positioning pin are fixedly connected between the connecting plate and the second sliding block, a spring is fixedly connected between the connecting plate and the second sliding block and located at the periphery of the positioning pin, and the end of the positioning pin away from the connecting plate is inserted into a positioning groove on the corresponding side under the action of the spring; a handle is fixedly installed on the side of the connecting plate away from the first mounting plate; a third sliding rod is fixedly connected to the side of the second sliding block away from the optical axis, and two fourth sliding rods symmetrically arranged about the third sliding rod are fixedly connected, the end of the fourth sliding rod and the third sliding rod away from the second sliding block is fixedly installed with a stop block, and a shielding piece is slidingly installed on the two fourth sliding rods; a through slot is formed on one side of the shielding piece, and two linear bearings are fixedly installed about the through slot, the two linear bearings are slidingly installed on the two fourth sliding rods, and the third sliding rod penetrates the shielding piece through the through slot; a first sleeve ring and a second sleeve ring are dampingly slidingly installed on the third sliding rod, a photoelectric sensor one is fixedly installed on the surface of the first sleeve ring and used in cooperation with the shielding piece, and a photoelectric sensor two is fixedly installed on the surface of the second sleeve ring and used in cooperation with the shielding piece; connecting rods are fixedly connected to both ends of the shielding piece, the end of the connecting rod away from the shielding piece points to the direction away from the second sliding block, and a float is fixedly connected to the end of the connecting rod away from the shielding piece; a control module is further provided on the first mounting plate, the control module is used for receiving the sensing signals of the photoelectric sensor one and the photoelectric sensor two and controlling the start and stop of the water pump. The second installation plate is fixedly connected with a second slider on the side away from the optical axis. A filter head is fixedly installed on the outer side of the second installation plate away from the second slider. A plurality of clamping seats are fixedly installed on the outer side of the second installation plate between the filter head and the second slider and are arrayed along the length direction of the second installation plate. The first water pipe is fixedly connected with the filter head and penetrates through the plurality of clamping seats. The clamping seats are used for fixing the periphery of the first water pipe. The filter head is used for filtering the accumulated water entering the first water pipe. The filter head comprises a filter barrel, a connecting pipe and a cleaning assembly. A plurality of filter holes are uniformly formed on the periphery of the filter barrel. The connecting pipe is fixedly connected with the filter barrel at one end. A fixing seat for fixedly connecting with the second installation plate is arranged on the periphery of the connecting pipe. The connecting pipe is fixedly connected with the first water pipe at the end away from the filter barrel. The cleaning assembly is installed between the connecting pipe and the filter barrel. The cleaning assembly comprises a mounting disc, a rotating shaft, a mounting ring and turbine blades. The mounting disc is coaxially arranged inside the connecting pipe. A plurality of fixing rods are fixedly connected between the periphery of the mounting disc and the inner wall of the connecting pipe. The rotating shaft is rotatably installed between the mounting disc and the inner end face of the filter barrel away from the connecting pipe. The mounting ring is fixedly installed on the outer periphery of the rotating shaft and is located inside the connecting pipe. A plurality of turbine blades are fixedly installed on the outer periphery of the mounting ring in a circumferential direction. A plurality of bristles are uniformly fixedly installed on the part of the outer periphery of the rotating shaft inside the filter barrel. The bristles are in sliding contact with the inner wall of the filter barrel at the end away from the rotating shaft.

2. The accumulated water discharge device for shield tunneling according to claim 1, wherein The extension mechanism comprises an extension plate and a sliding assembly. The sliding assembly comprises a second mounting seat, a first sliding rod, a first sliding block and a screw rod. One second mounting seat is fixedly installed on the top surface of the bottom plate at a position close to each end. The two second mounting seats are arranged in parallel with each other. The screw rod is rotatably installed between the two second mounting seats. The end of the screw rod is rotatably penetrated through the second mounting seat at the corresponding position and is fixedly installed with an adjusting hand wheel. The two first sliding rods are fixedly connected between the two second mounting seats and are symmetrically arranged with respect to the screw rod. The first sliding block is slidingly installed on the two first sliding rods and is threadedly connected with the screw rod. The bottom surface of the extension plate is fixedly connected with the top surface of the first sliding block at one end. Two first mounting seats symmetrically arranged are obliquely arranged on the top surface of the extension plate at the end away from the adjusting hand wheel. The optical shaft is dampingly rotatably connected between the ends of the two first mounting seats away from the extension plate. The water level control mechanism is fixedly connected on the outer periphery of the optical shaft. The U-shaped clamping seat for limiting the water level control mechanism is fixedly installed on the top surface of the extension plate at the end close to the adjusting hand wheel.

3. The accumulated water discharge device for shield tunneling according to claim 2, wherein The bottom surface of the extension plate is fixedly installed with a sliding rail. The sliding rail is slidingly connected between the second mounting seat away from the adjusting hand wheel. The sliding rail is used for supporting the extension plate and has a guiding effect on the extension plate.

4. The accumulated water discharge device for shield tunneling according to claim 1, wherein The bottom surface of the bottom plate is fixedly connected with a set of supporting mechanisms near the corners, the supporting mechanisms include threaded columns, the top ends of the threaded columns are fixedly connected with the bottom surface of the bottom plate, a plurality of limiting grooves parallel to the axis of the threaded column are arranged on the periphery of the threaded column in a circumferential array, and a knob is threadedly installed on the periphery of the threaded column; A lifting ring is sleeved on the periphery of the threaded column, the lifting ring is located below the knob and is rotationally connected with the knob, a plurality of protrusions are fixedly installed on the inner wall of the lifting ring in a circumferential array, and the ends of the protrusions away from the inner wall of the lifting ring are respectively slidably installed in the limiting grooves; The bottom surface of the lifting ring is fixedly connected with a plurality of insertion rods, the insertion rods are distributed in a circumferential array about the axis of the lifting ring, and the ends of the insertion rods away from the lifting ring are in a conical structure.

5. The water drainage method of the water accumulation drainage device for shield tunneling according to claim 1, wherein the water drainage method comprises the following steps: S1: cause analysis of the water gushing section; determining that the tunnel water gushing phenomenon is caused by groundwater development; S2: recording the water outlet position, water volume, water gushing condition, change rule, supply source and water quality composition in the tunnel; S3: when facing large-area seepage water, drilling is used to introduce water flow into the drainage hole, and the position, number, depth and seepage volume information of the drilling are recorded in detail; S4: drainage; S41: placing the invention beside the drainage hole, positioning the invention at the working position through the supporting mechanism, before drainage, the end of the second water pipe away from the water pump is inserted into the water tank of the water transport vehicle, and the pumping rate of the water pump is greater than the water gushing rate; S42: rotating the lead screw by adjusting the hand wheel, the lead screw drives the first sliding block to make the end of the extension plate away from the adjusting hand wheel extend to above the water surface of the drainage hole, then the first mounting plate is turned over so that the end of the first mounting plate away from the optical axis is located above the water surface, and the first mounting plate is perpendicular to the water surface, then the filter head is inserted into the drainage hole through a set of positioning assemblies so that the filter head touches the bottom, then the water pump is manually started to pump out the accumulated water to a water level that does not affect the normal construction in the tunnel, then another set of positioning assemblies is used to lower the float to a state of contacting the water surface, and the water surface height range that does not affect the construction in the tunnel is set as a to b, when the water surface height is a, the shielding piece is in a state of shielding the photoelectric sensor one, at this time the control module receives the sensing signal of the photoelectric sensor one and controls the water pump to stop pumping, when the water surface height comes to b, the shielding piece is in a state of shielding the photoelectric sensor two, at this time the control module receives the sensing signal of the photoelectric sensor two and controls the water pump to start pumping, and the process is repeated to keep the water surface height in the drainage hole between a and b, that is, it does not affect the normal construction in the tunnel; S5: plugging; using the advanced small pipe pre-grouting plugging water auxiliary construction method to plug the water gushing point; S6: transporting the accumulated water collected in the process out of the tunnel. ​

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