CN111042136B - Combined device for performing secondary hole cleaning on underground wall connecting groove section by utilizing pouring guide pipe and hole cleaning method - Google Patents
Combined device for performing secondary hole cleaning on underground wall connecting groove section by utilizing pouring guide pipe and hole cleaning method Download PDFInfo
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- CN111042136B CN111042136B CN201911285833.6A CN201911285833A CN111042136B CN 111042136 B CN111042136 B CN 111042136B CN 201911285833 A CN201911285833 A CN 201911285833A CN 111042136 B CN111042136 B CN 111042136B
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Abstract
A composite set for secondary hole cleaning of underground wall-connected groove sections by utilizing a pouring guide pipe is composed of a reverse circulation hole cleaning device and a forward circulation hole cleaning device; the reverse circulation hole cleaning device comprises a pouring guide pipe, one end of the pouring guide pipe is arranged in a groove of the groove section of the underground continuous wall, the top of the end socket is provided with a fixed inner pipe device, one end of the inner pipe sequentially penetrates through the end socket and the pouring guide pipe from top to bottom to the bottom of the pouring guide pipe, the other end of the inner pipe extends out of the end socket, and the upper part of the inner pipe is provided with an inner pipe fixing plate matched with the; the positive circulation hole cleaning device comprises a positive circulation pouring guide pipe with one end arranged in a groove of the groove section of the underground continuous wall, the other end of the positive circulation pouring guide pipe is communicated with the lower end of the guide pipe sealer, and the upper end of the guide pipe sealer is sealed by a sealing plate. The combined device and the hole cleaning method for performing secondary hole cleaning on the underground wall connecting groove section by using the pouring guide pipes can solve the problems that the hole cleaning quality is difficult to ensure and resources are wasted when a plurality of sets of pouring guide pipes are required to be arranged in the groove.
Description
Technical Field
The invention relates to the technical field of underground continuous wall construction, in particular to a combined device and a hole cleaning method for performing secondary hole cleaning on an underground continuous wall groove section by utilizing a pouring guide pipe.
Background
After the construction of the groove section of the underground continuous wall is finished and before underwater concrete pouring is carried out, a reinforcement cage, a pre-buried grouting pipe, a joint pipe, a pouring guide pipe and the like are usually required to be arranged in the groove, and the time generally occupied is long. The mud in the groove is in a static state for a long time, suspended matters such as mud and sand in the mud gradually precipitate to the bottom of the groove to form thicker sediments, if secondary hole cleaning is not carried out, a layer of slag inclusion layer can be formed at the bottom of the wall, and the quality of the diaphragm wall is directly influenced.
In order to ensure the quality of the wall, secondary hole cleaning is required. Because the components such as a reinforcement cage and the like are arranged below the groove, special equipment cannot be arranged below the groove for secondary hole cleaning. The existing commonly used secondary hole cleaning method is to clean holes in a reverse circulation mode by utilizing a pouring guide pipe through an air compressor, and the hole cleaning effect is better when only one set of pouring guide pipe is arranged below the groove section. When a plurality of sets of pouring guide pipes are arranged below the groove, the hole cleaning is only carried out by the method, the hole cleaning quality of the bottom of the groove of the lower guide pipe can be only ensured, and the hole cleaning quality below other guide pipes is not ensured. If an air compressor is arranged below each set of pouring guide pipe for cleaning holes, although the hole cleaning quality of the groove bottom can be ensured, the used resources are more. If the method that the air compressor is installed on other guide pipes to clean the holes after the holes are cleaned by the single guide pipe is adopted, the method is complex, time-consuming, labor-consuming and extremely uneconomical.
Disclosure of Invention
The invention aims to solve the technical problem of providing a combined device for performing secondary hole cleaning on an underground wall-connected groove section by using pouring guide pipes and a hole cleaning method, which can solve the problems that the hole cleaning quality is difficult to ensure and resources are wasted when a plurality of sets of pouring guide pipes are required to be arranged in a groove, quickly discharge hole bottom sediments, and have the advantages of good slag discharging effect, simple device structure and convenient operation.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a combined device for secondary hole cleaning of underground wall-connected groove sections by utilizing a pouring guide pipe,
the combined device consists of a reverse circulation hole cleaning device and a forward circulation hole cleaning device;
the reverse circulation hole cleaning device comprises a pouring guide pipe, one end of the pouring guide pipe is arranged in a groove of the groove section of the underground continuous wall, the other end of the pouring guide pipe is communicated with the end enclosure, the top of the end enclosure is provided with a fixed inner pipe device, one end of the inner pipe sequentially penetrates through the end enclosure and the pouring guide pipe from top to bottom to the bottom of the pouring guide pipe, the other end of the inner pipe extends out of the end enclosure, and the upper part of the inner pipe is provided with;
the end socket comprises an end socket pipe body, the top of the end socket pipe body is provided with a fixed inner pipe device, the fixed inner pipe device is a circular groove body with the inner diameter larger than that of the end socket pipe body, the bottom surface of the fixed inner pipe device is provided with a plurality of fixed screw rods, the bottom of the end socket pipe body is communicated with a pouring guide pipe, and one side of the end socket pipe body is communicated with a branch pipe to form a three-;
a lifting device arranged below the inner pipe is arranged on the fixed inner pipe device;
a plurality of screw holes matched with the fixed screws are formed in the inner pipe fixing plate;
the positive circulation hole cleaning device comprises a positive circulation pouring guide pipe with one end arranged in a groove of the groove section of the underground continuous wall, the other end of the positive circulation pouring guide pipe is communicated with the lower end of a guide pipe sealer, the upper end of the guide pipe sealer is sealed by a sealing plate, one end of a cleaning pipe body is installed on the sealing plate and penetrates through the sealing plate to be communicated with the guide pipe sealer, and the other end of the cleaning pipe body is matched with a slurry inlet pipe.
Preferably, the inner pipe is formed by connecting a plurality of single pipe body threads, semicircular hanging rings are welded on two sides of each single pipe body, an inner pipe fixing plate matched with the inner pipe fixing device is arranged on the upper portion of the uppermost single pipe body, and the semicircular hanging rings of the uppermost single pipe body are arranged above the inner pipe fixing plate.
Preferably, the inner tube is provided with the hoisting device and includes the mounting panel of being connected along outside with the circular cell body of fixed inner tube device, and the mounting panel both sides respectively are provided with the bolt piece in area bolt hole, and splint comprise the splint body of seting up semi-circular hole in the middle of two, and the diameter ratio of the circular hole that two semi-circular hole amalgamations formed is slightly big but slightly littleer than the external diameter of the semi-circular rings of inner tube both sides, be equipped with on the splint body with bolt hole matched with bolt on the bolt piece.
Preferably, a handle is further arranged on the splint body.
A method for carrying out secondary hole cleaning by adopting the combined device comprises the following steps:
step 1: after the reinforcement cage members in the groove section of the underground continuous wall are completely arranged, arranging a pouring guide pipe to the bottom of the groove at a position of 30cm, and arranging a positive circulation pouring guide pipe to the bottom of the groove, wherein the tail end height of the pouring guide pipe is lower than that of the positive circulation pouring guide pipe;
step 2: installing a head on a pouring guide pipe, wherein the head is provided with an inner pipe fixing device at the top and a head with a lifting device arranged below an inner pipe, two clamp plates arranged below the inner pipe and arranged on the lifting device move to two sides of a support plate arranged below the inner pipe and arranged on the lifting device, arranging the inner pipe below the pouring guide pipe, fixing and lengthening the inner pipe by utilizing the clamp plates in the descending process, connecting the single pipe body at the top of the inner pipe with the inner pipe at the bottom after the inner pipe is arranged in place, moving the two clamp plates arranged below the inner pipe and arranged on the lifting device to two sides of the support plate arranged below the inner pipe, continuously arranging the inner pipe downwards, and screwing down by adopting a nut to fix the inner pipe after a screw hole on an inner pipe fixing plate on the single pipe body at the top is connected with a fixing screw on the inner pipe;
and step 3: connecting an air pipe of the air compressor with the uppermost end exposed out of the inner pipe;
and 4, step 4: a slag outlet pipe is connected to a mud purifier or a sedimentation tank through a branch pipe of the end socket, and then the mud pipe is connected to a tank from the mud purifier or the sedimentation tank;
and 5: installing a catheter sealer with a cleaning tube body at the top end of the positive circulation casting catheter, communicating the upper end of the cleaning tube body with a slurry inlet pipe, and communicating the slurry inlet pipe with a slurry pump;
step 6: measuring the thickness of the sediment at the bottom of the tank, if the sediment at the bottom of the tank buries the bottom of the pouring guide pipe, lifting the pouring guide pipe upwards to enable the bottom of the pouring guide pipe to be higher than the sediment surface;
and 7: starting an air compressor, injecting high-pressure air into an inner pipe in the reverse circulation hole cleaning device, forming circulation flow by slurry between the inner pipe and a pouring guide pipe under the action of the high-pressure air, and discharging sediment at the bottom of a groove through a slag discharging pipe along a gap between the inner pipe and the pouring guide pipe; simultaneously, a slurry pump connected with the positive circulation pouring guide pipe is started, slurry in the tank is injected into the tank bottom through the positive circulation pouring guide pipe, sediment at the tank bottom is stirred, the sediment is in a suspension state, and the sediment in the suspension state is discharged through a slag discharging pipe connected with a branch pipe of the reverse circulation hole cleaning device;
and 8: in the hole cleaning process, along with the reduction of sediment at the bottom of the hole, a pouring guide pipe and a positive circulation pouring guide pipe are timely lowered, and slurry is timely supplemented into the groove in the deslagging process;
and step 9: and after hole cleaning is finished, loosening the nut for fixing the screw rod on the inner pipe fixing device, taking out the inner pipe from the pouring guide pipe, then removing the end socket, removing the guide pipe sealer, and performing underwater concrete pouring on the groove section, namely finishing secondary hole cleaning.
Preferably, the step of arranging an inner pipe below the pouring guide pipe in the step 2 comprises the following steps:
step a: firstly, arranging a single pipe body below a pouring guide pipe, moving two clamp plate bodies arranged below an inner pipe and on a lifting device to a support plate arranged below the inner pipe and on the lifting device, combining semicircular holes on the two clamp plate bodies to form a circular hole, and stopping the downward arrangement when the single pipe body is lowered to a semicircular hanging ring to reach the circular hole;
step b: taking out a single pipe body to be connected with a previous single pipe body, lifting upwards two clamp plate bodies arranged on a lifting device below an inner pipe, moving the two clamp plate bodies to the two sides of a support plate arranged on the lifting device below the inner pipe, moving the two single pipe bodies downwards, moving the two clamp plate bodies arranged on the lifting device below the inner pipe to the support plate arranged on the lifting device below the inner pipe after a semicircular hanging ring of a first single pipe body passes through a circular hole, combining the semicircular holes on the two clamp plate bodies to form a circular hole, continuously moving the two single pipe bodies downwards, and stopping the downward movement when the semicircular hanging ring of the single pipe body on the top reaches the circular hole;
step c: and d, repeating the step b until the connection of the uppermost single pipe body is completed.
Preferably, in step 2, after the screw hole (7) on the inner tube fixing plate on the uppermost single tube body is connected with the fixing screw on the fixed inner tube device and is screwed down by the nut, the water is stopped at the joint by the rubber gasket.
The combined device and the hole cleaning method for performing secondary hole cleaning on the underground wall connecting groove section by using the pouring guide pipe have the beneficial effects that:
1. in the reverse circulation hole cleaning device, the inner pipe is manufactured in sections, so that the inner pipe is convenient to arrange downwards and pull up, and the inner pipes with different lengths can be arranged downwards according to different groove depths, so that the device is suitable for secondary hole cleaning of groove sections without groove depths.
2. The underwater concrete pouring device has the advantages that the structure is simple, the operation is convenient, the inner pipe, the end socket and the guide pipe sealer only need to be installed when secondary hole cleaning is carried out, and the underwater concrete pouring of the groove section can be carried out only by detaching the inner pipe, the end socket and the guide pipe sealer after the hole cleaning is finished.
3. The problem of clear hole quality be difficult to guarantee when can solving the inslot and need set up many sets and pour the pipe, the resource-wasting is solved, and the sediment at the bottom of the quick discharge hole is sediment effectual, device simple structure, convenient operation.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the structure of the combined apparatus of the present invention;
FIG. 2 is a schematic view of the inner tube of the assembly of the present invention;
FIG. 3 is a schematic view of the head of the combined apparatus of the present invention;
FIG. 4 is a schematic view of the inner tube securing device and the lifting device disposed below the inner tube of the combination of the present invention, wherein the lifting device disposed below the inner tube is not provided with a clamp plate;
FIG. 5 is a schematic view of a clamping plate of the assembly of the present invention.
Detailed Description
Example one
As shown in fig. 1-5, a combination device for performing secondary hole cleaning on underground wall connecting groove sections by using pouring guide pipes is characterized in that:
the combined device consists of a reverse circulation hole cleaning device and a forward circulation hole cleaning device;
the reverse circulation hole cleaning device comprises a pouring guide pipe 1, one end of the pouring guide pipe 1 is arranged below a groove 14 of a groove section of an underground continuous wall 13, the other end of the pouring guide pipe 1 is communicated with an end enclosure 3, a fixed inner pipe device 9 is arranged at the top of the end enclosure 3, one end of an inner pipe 2 sequentially penetrates through the end enclosure 3 and the pouring guide pipe 1 from top to bottom to the bottom of the pouring guide pipe 1, the other end of the inner pipe 2 extends out of the end enclosure 3, and an inner pipe fixing plate 6 matched with the fixed inner pipe device;
the end socket 3 comprises an end socket pipe body 15, a fixed inner pipe device 9 is arranged at the top of the end socket pipe body 15, the fixed inner pipe device 9 is a circular groove body with the inner diameter larger than that of the end socket pipe body 15, a plurality of fixing screws 10 are arranged on the bottom surface of the fixed inner pipe device 9, the bottom of the end socket pipe body 15 is communicated with the pouring guide pipe 1, and one side of the end socket pipe body 15 is communicated with the branch pipe 8 to form a three-way;
the fixed inner pipe device 9 is provided with an inner pipe lower lifting device 4;
a plurality of screw holes 7 matched with the fixed screws 10 are formed in the inner pipe fixing plate 6;
the positive circulation hole cleaning device comprises a positive circulation pouring guide pipe 20, one end of the positive circulation pouring guide pipe 20 is arranged below the groove 14 of the groove section of the underground continuous wall 13, the other end of the positive circulation pouring guide pipe 20 is in threaded communication with the lower end of a guide pipe sealer 22, the upper end of the guide pipe sealer 22 is sealed through a sealing plate, one end of a cleaning pipe body 21 is arranged on the sealing plate and penetrates through the sealing plate to be communicated with the guide pipe sealer 22, and the other end of the cleaning pipe body 21 is matched with a pulp inlet pipe.
The inner pipe 2 is formed by connecting a plurality of single pipe bodies 2-1 in a threaded manner, semicircular hanging rings 5 are welded on two sides of each single pipe body 2-1, an inner pipe fixing plate 6 matched with the inner pipe fixing device 9 is arranged on the upper portion of the uppermost single pipe body 2-2, and the semicircular hanging rings 5 of the uppermost single pipe body 2-2 are arranged above the inner pipe fixing plate 6.
The lifting device 4 arranged below the inner pipe comprises a support plate 11 connected with the outer edge of a circular groove body for fixing the inner pipe device 9, bolt blocks 16 with bolt holes 17 are respectively arranged on two sides of the support plate 11, a clamping plate 12 consists of two clamping plate bodies 12-1 with a semicircular hole in the middle, the diameter of the circular hole 12-2 formed by splicing the two semicircular holes is slightly larger than the outer diameter of the inner pipe 2 but slightly smaller than the outer diameter of the semicircular hanging rings 5 on two sides of the inner pipe 2, and a bolt 18 matched with the bolt holes 17 in the bolt blocks 16 is arranged on the clamping plate body 12-1.
The pinch plate body 12-1 is further provided with a handle 19, and the handle 19 is preferably made of steel bars and has a length of 20 cm.
The inner diameter of the pouring guide pipe 1 is 250-300mm and is formed by connecting a plurality of pipe body threads; the inner pipe 2 is formed by connecting a plurality of single pipe bodies 2-1 through screw threads, each single pipe body 2-1 is made of DN40 steel pipes, each single pipe body is 3m long, and the single pipe bodies 2-1 are connected through screw threads; the inner tube fixed plate 6 is a circular steel plate with the diameter larger than the inner diameter of the pouring guide pipe 1 by 80mm, the number of the screw holes 7 is 4, the diameter is 20mm, and the screw holes are uniformly distributed on the surface of the circular steel plate.
The support plate 11 is square, the side length of the support plate is 100mm wider than the outer diameter of the inner pipe fixing plate 6, a hole with the diameter the same as the outer diameter of the circular groove body of the inner pipe fixing device 9 at the top of the seal head 3 is processed in the middle of the support plate, and the support plate is installed on the outer edge of the circular groove body of the inner pipe fixing device 9 and is welded with the circular groove body to form a whole.
The guide pipe sealer 22 is formed by processing a steel pipe with the same inner diameter as the positive circulation pouring guide pipe 20, the length of the steel pipe sealer 22 is about 30cm, the upper end of the guide pipe sealer 22 is sealed by a steel plate, a hole with the aperture of 110mm is formed in the middle of the steel plate, and the welded steel pipe serves as a cleaning pipe body 21.
Example two
A method for carrying out secondary hole cleaning by adopting the combined device comprises the following steps:
step 1: after the lower part of a steel reinforcement cage member in the groove section of the underground continuous wall 13 is completely arranged, a pouring guide pipe 1 is arranged below the groove 14 to the position of 30cm below the bottom of the groove, a positive circulation pouring guide pipe 20 is arranged below the groove 14, and the tail end height of the pouring guide pipe 1 is lower than that of the positive circulation pouring guide pipe 20;
step 2: installing an end socket 3 on a pouring guide pipe 1, wherein the end socket 3 is an end socket provided with a fixed inner pipe device 9 at the top and a lifting device 4 arranged below the inner pipe, lifting two clamp plate bodies 12-1 on the lifting device 4 arranged below the inner pipe upwards to move to two sides of a support plate 11 of the lifting device 4 arranged below the inner pipe, arranging the inner pipe 2 below the pouring guide pipe 1, fixing and lengthening the inner pipe 2 by utilizing the clamp plates 12 in the lower arranging process, connecting the single pipe body 2-2 at the top of the inner pipe 2 with the lower inner pipe 2 after the inner pipe 2 is arranged in place, lifting the two clamp plate bodies 12-1 on the lifting device 4 arranged below the inner pipe upwards to move to two sides of the support plate 11 of the lifting device 4 arranged below the inner pipe, continuously arranging the inner pipe 2 downwards, and after a screw hole 7 on an inner pipe fixing plate 6 on the single pipe body 2-2 at the top is connected with a fixing screw 10 on, the inner pipe 2 is fixed by screwing down the nut;
and step 3: connecting an air pipe of the air compressor with the uppermost end exposed out of the inner pipe 2;
and 4, step 4: a slag outlet pipe is connected to a mud purifier or a sedimentation tank through a branch pipe 8 of the seal head 3, and then the mud pipe is connected to a tank 14 from the mud purifier or the sedimentation tank;
and 5: a guide pipe sealer 22 with a cleaning pipe body 21 is arranged at the top end of the positive circulation pouring guide pipe 20, the upper end of the cleaning pipe body 21 is communicated with a slurry inlet pipe, and the slurry inlet pipe is communicated with a slurry pump;
step 6: measuring the thickness of the sediment at the bottom of the tank, if the sediment at the bottom of the tank buries the bottom of the pouring guide pipe 1, lifting the pouring guide pipe 1 upwards to enable the bottom of the pouring guide pipe 1 to be higher than the sediment surface 23;
and 7: starting an air compressor, injecting high-pressure air into an inner pipe 2 in the reverse circulation hole cleaning device, forming circulation flow by mud between the inner pipe 2 and a pouring guide pipe 1 under the action of the high-pressure air, and discharging the sediment at the bottom of the groove through a slag discharging pipe along a gap between the inner pipe 2 and the pouring guide pipe 1; meanwhile, a slurry pump connected with the positive circulation pouring guide pipe 20 is started, slurry in the tank is injected into the bottom of the tank through the positive circulation pouring guide pipe 20, sediment at the bottom of the tank is stirred to be in a suspension state, and the sediment in the suspension state is discharged through a slag discharging pipe connected with a branch pipe 8 of the reverse circulation hole cleaning device;
and 8: in the hole cleaning process, along with the reduction of sediment at the bottom of the hole, the pouring guide pipe 1 and the positive circulation pouring guide pipe 20 are timely lowered, and slurry is timely supplemented into the groove 14 in the deslagging process;
and step 9: and after hole cleaning is finished, loosening the nut for fixing the screw rod 10 on the inner pipe fixing device 9, taking out the inner pipe 2 from the pouring guide pipe 1, then removing the seal head 3, removing the guide pipe sealer 22, and performing underwater concrete pouring on the groove section to finish secondary hole cleaning.
The step 2 of arranging the inner pipe 2 below the pouring guide pipe 1 comprises the following steps:
step a: firstly, arranging a single pipe body 2-1 below a pouring guide pipe 1, moving two clamp plate bodies 12-1 on a lifting device 4 below an inner pipe to a support plate 11 of the lifting device 4 below the inner pipe, combining semicircular holes on the two clamp plate bodies 12-1 to form a circular hole 12-2, and stopping the downward arrangement when the single pipe body 2-1 is lowered to a semicircular lifting ring 5 and reaches the circular hole 12-2;
step b: taking out a single pipe body 2-1 to be connected with a previous single pipe body 2-1, lifting upwards two clamp plate bodies 12-1 on a lifting device 4 arranged below the inner pipe to move to the two sides of a support plate 11 of the lifting device 4 arranged below the inner pipe, moving the two single pipe bodies 2-1 downwards, moving the two clamp plate bodies 12-1 on the lifting device 4 arranged below the inner pipe to the support plate 11 of the lifting device 4 arranged below the inner pipe after a semicircular hanging ring 5 of the first single pipe body 2-1 passes through a circular hole 12-2, combining the semicircular holes on the two clamp plate bodies 12-1 to form a circular hole 12-2, continuously moving the two single pipe bodies 2-1 downwards, and stopping the downward movement when the semicircular hanging ring 5 of the uppermost single pipe body 2-1 reaches the circular hole 12-2;
step c: and c, repeating the step b until the connection of the uppermost single pipe body 2-2 is completed.
In the step 2, when the screw hole 7 on the inner tube fixing plate 6 on the uppermost single tube body 2-2 is connected with the fixing screw 10 on the fixed inner tube device 9 and is screwed down by a nut, the water is stopped at the joint by a rubber gasket.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. The utility model provides an utilize and pour the pipe and carry out clear composite set in hole of underground wall groove section secondary, its characterized in that:
the combined device consists of a reverse circulation hole cleaning device and a forward circulation hole cleaning device;
the reverse circulation hole cleaning device comprises a pouring guide pipe (1) with one end arranged in a groove (14) of a groove section of the underground continuous wall (13) at the lower part, the other end of the pouring guide pipe (1) is communicated with an end enclosure (3), a fixed inner pipe device (9) is arranged at the top of the end enclosure (3), one end of an inner pipe (2) sequentially penetrates through the end enclosure (3) and the pouring guide pipe (1) to the bottom of the pouring guide pipe (1) from top to bottom, the other end of the inner pipe (2) extends out of the end enclosure (3), and an inner pipe fixing plate (6) matched with the fixed inner pipe device (9) is arranged at;
the end socket (3) comprises an end socket pipe body (15), a fixed inner pipe device (9) is arranged at the top of the end socket pipe body (15), the fixed inner pipe device (9) is a circular groove body with the inner diameter larger than that of the end socket pipe body (15), a plurality of fixing screws (10) are arranged on the bottom surface of the fixed inner pipe device (9), the bottom of the end socket pipe body (15) is communicated with the pouring guide pipe (1), and one side of the end socket pipe body (15) is communicated with the branch pipe (8) to form a three-way pipe body;
a lifting device (4) arranged below the inner pipe is arranged on the inner pipe fixing device (9);
a plurality of screw holes (7) matched with the fixed screws (10) are formed in the inner pipe fixing plate (6);
the positive circulation hole cleaning device comprises a positive circulation pouring guide pipe (20) with one end arranged below a groove (14) of the groove section of the underground continuous wall (13), the other end of the positive circulation pouring guide pipe (20) is communicated with the lower end of a guide pipe sealer (22), the upper end of the guide pipe sealer (22) is sealed by a sealing plate, one end of a cleaning pipe body (21) is installed on the sealing plate and penetrates through the sealing plate to be communicated with the guide pipe sealer (22), and the other end of the cleaning pipe body (21) is matched with a pulp inlet pipe.
2. The combination of claim 1, wherein the secondary cleaning of the underground wall channel section by the cast conduit is performed by: the inner pipe (2) is formed by connecting a plurality of single pipe bodies (2-1) in a threaded manner, semicircular hanging rings (5) are welded on two sides of each single pipe body (2-1), an inner pipe fixing plate (6) matched with the inner pipe fixing device (9) is arranged on the upper portion of the uppermost single pipe body (2-2), and the semicircular hanging rings (5) of the uppermost single pipe body (2-2) are arranged above the inner pipe fixing plate (6).
3. The combination of claim 2, wherein the secondary cleaning of the underground wall channel section by the cast conduit is performed by: the lifting device (4) arranged below the inner pipe comprises a support plate (11) connected with the outer edge of a circular groove body for fixing the inner pipe device (9), bolt blocks (16) with bolt holes (17) are respectively arranged on two sides of the support plate (11), a clamping plate (12) is composed of two clamping plate bodies (12-1) with semicircular holes formed in the middle, the diameter of each circular hole (12-2) formed by splicing the two semicircular holes is slightly larger than the outer diameter of the inner pipe (2) but slightly smaller than the outer diameter of the semicircular hanging rings (5) on two sides of the inner pipe (2), and a bolt (18) matched with the bolt holes (17) in the bolt blocks (16) is arranged on each clamping plate body (12-1).
4. The combination of claim 3, wherein the secondary cleaning of the underground wall channel section by the cast conduit is performed by: the splint body (12-1) is also provided with a handle (19).
5. A method for secondary hole cleaning using the combination of any one of claims 1-4, characterized in that the method comprises the steps of:
step 1: after the steel reinforcement cage members in the groove section of the underground continuous wall (13) are completely arranged, arranging a pouring guide pipe (1) to the position of 30cm below the groove bottom in the groove (14) downwards, and arranging a positive circulation pouring guide pipe (20) downwards in the groove (14), wherein the tail end height of the pouring guide pipe (1) is lower than that of the positive circulation pouring guide pipe (20);
step 2: an end socket (3) is arranged on a pouring guide pipe (1), the end socket (3) is an end socket of which the top is provided with a fixed inner pipe device (9) and a lifting device (4) arranged below an inner pipe, two clamp plate bodies (12-1) arranged below the inner pipe and on the lifting device (4) are lifted upwards and moved to the two sides of a support plate (11) arranged below the inner pipe and on the lifting device (4), the inner pipe (2) is arranged below the pouring guide pipe (1), in the downward arrangement process, the inner pipe (2) is fixed and lengthened by utilizing the clamp plates (12), when the inner pipe (2) is arranged in place, one single pipe body (2-2) at the top of the inner pipe (2) is connected with the inner pipe (2) below, the two clamp plate bodies (12-1) arranged above the lifting device (4) are lifted upwards and moved to the two sides of the support plate (11) arranged below the inner pipe and on the lifting device (4), the inner pipe, after a screw hole (7) on an inner pipe fixing plate (6) on the uppermost single pipe body (2-2) is connected with a fixing screw (10) on a fixed inner pipe device (9), the inner pipe (2) is fixed by adopting a nut to screw down;
and step 3: connecting an air pipe of the air compressor with the uppermost end of the inner pipe (2) exposed outside the end enclosure (3);
and 4, step 4: a slag outlet pipe is connected to a slurry purifier or a sedimentation tank through a branch pipe (8) of the seal head (3), and then a slurry pipe is connected to a tank (14) from the slurry purifier or the sedimentation tank;
and 5: a guide pipe sealer (22) with a cleaning pipe body (21) is arranged at the top end of the positive circulation pouring guide pipe (20), the upper end of the cleaning pipe body (21) is communicated with a slurry inlet pipe, and the slurry inlet pipe is communicated with a slurry pump;
step 6: measuring the thickness of the sediment at the bottom of the tank, if the sediment at the bottom of the tank buries the bottom of the pouring guide pipe (1), lifting the pouring guide pipe (1) upwards to enable the bottom of the pouring guide pipe (1) to be higher than the sediment surface (23);
and 7: starting an air compressor, injecting high-pressure air into an inner pipe (2) in the reverse circulation hole cleaning device, forming circulation flow by slurry between the inner pipe (2) and a pouring guide pipe (1) under the action of the high-pressure air, and discharging the bottom sediment of the groove through a slag discharging pipe along a gap between the inner pipe (2) and the pouring guide pipe (1); meanwhile, a slurry pump connected with the positive circulation pouring guide pipe (20) is started, slurry in the tank is injected into the bottom of the tank through the positive circulation pouring guide pipe (20), sediment at the bottom of the tank is stirred to enable the tank to be in a suspension state, and the sediment in the suspension state is discharged through a slag discharging pipe connected with a branch pipe (8) of the reverse circulation hole cleaning device;
and 8: in the hole cleaning process, along with the reduction of sediment at the bottom of the hole, the pouring guide pipe (1) and the positive circulation pouring guide pipe (20) are timely lowered, and slurry is timely supplemented into the groove (14) in the deslagging process;
and step 9: and after hole cleaning is finished, loosening the nut for fixing the screw rod (10) on the inner pipe fixing device (9), taking out the inner pipe (2) from the pouring guide pipe (1), then detaching the seal head (3), detaching the guide pipe sealer (22), and pouring underwater concrete on the groove section to finish secondary hole cleaning.
6. Method according to claim 5, characterized in that the step of providing an inner pipe (2) under the casting guide (1) in step 2 is:
step a: firstly, arranging a single pipe body (2-1) below a pouring guide pipe (1), moving two clamp plate bodies (12-1) on a lifting device (4) below an inner pipe to a support plate (11) on the lifting device (4) below the inner pipe, combining semicircular holes on the two clamp plate bodies (12-1) to form a circular hole (12-2), and stopping the downward arrangement when the single pipe body (2-1) is lowered to a semicircular lifting ring (5) and reaches the circular hole (12-2);
step b: taking out a single pipe body (2-1) to be connected with a previous single pipe body (2-1), lifting two clamp plate bodies (12-1) on a lifting device (4) arranged below an inner pipe upwards to move to two sides of a support plate (11) of the lifting device (4) arranged below the inner pipe, moving the two single pipe bodies (2-1) downwards, moving the two clamp plate bodies (12-1) on the lifting device (4) arranged below the inner pipe to the support plate (11) of the lifting device (4) arranged below the inner pipe after a semicircular hanging ring (5) of the first single pipe body (2-1) passes through a circular hole (12-2), combining the semicircular holes on the two clamp plate bodies (12-1) to form the circular hole (12-2), continuously moving the two single pipe bodies (2-1) downwards, and when the semicircular hanging ring (5) of the single pipe body (2-1) on the top reaches the circular hole (12-2), stopping the lowering;
step c: and (c) repeating the step (b) until the connection of the uppermost single pipe body (2-2) is completed.
7. The method of claim 5, wherein: in the step 2, after a screw hole (7) on an inner pipe fixing plate (6) on the uppermost single pipe body (2-2) is connected with a fixing screw (10) on a fixed inner pipe device (9) and is screwed down by a nut, a rubber gasket is used for stopping water at the joint.
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