KR100690956B1 - Dredging construction method of pipe using water pressure - Google Patents

Abstract

The present invention is a method for dredging the pipeline by using the water pressure of the sewage flowing in the large, large pipelines, such as the collection house, a part of the pipeline is blocked in the inside of the pipeline by the rapid flow of sewage discharged at this time The sludge in the pipeline is pushed out, and the step is divided into sections from the upstream inlet to the downstream outlet of the pipeline, and the sludge pushed out of the downstream outlet of the pipeline is discharged out of the manhole at each stage. It is possible in large pipelines such as pipelines and it is possible to remove sludge cleanly without damaging the pipeline with little need for additional power.

Dredging method, hydraulic pressure, sludge, packer

Description

Dredging construction method of pipe using water pressure}

1 is a reference diagram for explaining a conventional high-pressure dredging method.

2 to 8 is a reference diagram for sequentially explaining the dredging method according to the present invention.

* Description of the symbols for the main parts of the drawings *

100,111,112: pipeline 121,122: manhole

130: sludge removal packer 131,141: tube

132: Sewage outlet 140: Packer for quantity control

142: sewage inlet 150: camera

160: air pump 170: discharge pump

180: Abroll Box

The present invention relates to a dredging method, in particular, even in large pipelines, such as a collecting pipe, and dredging method of the pipeline using water pressure that is suitable to clean the sludge without damaging the pipeline with little need for additional power It is about.

In general, the dredging method of the pipeline refers to a method for removing deposits such as sludge accumulated on the bottom of the pipeline.

Recently, as the non-excavation work and CCTV photography work in the urban area or the new town housing site development site rapidly increase in the construction site, dredging work to remove the sludge deposited in the pipeline is more urgently needed than ever before.

As a dredging method of such a pipeline, a method using a bucket and a method of treating sludge collected in a manhole by applying high pressure in the pipeline have conventionally been typical.

Among them, a bucket is used to pass a wire through a sewer pipe located between the manhole and the manhole, and then suspend the bucket on the wire to repeatedly pull the bucket to remove sludge deposited in the pipeline, or friction with the bucket. Due to this, the pipelines are easily damaged, and it is difficult to apply them in large pipelines such as house pipes.

On the other hand, a method of treating the sludge collected in the manhole by applying a high pressure in the pipe line will be described below with reference to FIG. 1 for explaining a conventional high-pressure dredging method.

As shown, the conventional high-pressure dredging method using the injection equipment 20 located in the manhole 12 to spray the washing water 21 at a high pressure to the sludge in the conduit 11 to the opposite manhole 13 The sludge 14, which was pushed out and pushed out, was carried out in a manner to be pumped into the discharge pump 30.

However, such a conventional dredging method may be useful in a small pipe 11 having a relatively short length and a small diameter, but was almost useless in a large pipe such as a car collecting pipe. In the case of the collecting pipe passage, the size of the pipe may reach 800 to 1300 [mm] and the length may be longer than 100 [m], so that the pressure or the discharge pump 30 of the injection equipment 20 for spraying the washing water may be used. This is because the inhalation capacity of the drug could not afford.

In addition, since most of the collecting pipes have some sewage and sludge is deposited into the sewage, it is preferable to lower the level of the sewage filled in the pipes in order to remove the sludge cleanly. .

In addition, in the case of large pipelines such as a collecting pipe, the flow rate is not high, so the amount of sewage is high, so it is very difficult to turn the water or block the flow for dredging the pipeline.

Therefore, due to the problems described above, in the case of large pipelines, such as a car pipeline, there is no construction method that can effectively dredge, and thus, the pipeline itself is having a lot of difficulties in cleaning the pipeline itself as well as performing non-drilling works that require dredging. It is the present situation.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, the object of the present invention is possible in large pipelines, such as a collecting pipe line, and the sludge without damage to the pipeline with little need for additional power It is to provide dredging method of pipeline using hydraulic pressure which can be removed cleanly.

In order to achieve the above object, the dredging method using a hydraulic pressure according to the technical idea of the present invention, the first manhole connected in the upstream direction and the second manhole connected in the downstream direction in the middle of the second manhole A dredging method for dredging a located pipeline, a portion of the pipeline is closed from the inside of the intermediate pipeline to push the sludge in the pipeline by the rapid flow of sewage discharged at this time, and from the upstream inlet of the pipeline The technical configuration is characterized by the step of dividing the section to the downstream exit step by step, and pumping the sludge pushed out of the downstream outlet of the conduit out of the second manhole for each step.

Here, in order to push out the sludge, a sludge removal packer which is expandable to block the inside of the pipeline and a sewage outlet for ejection of sewage is used, and the sludge removal packer is moved step by step in each section. It can be characterized by pushing the.

In addition, in the conduit away from the sludge removal packer upstream a predetermined distance, the packer for water quantity adjustment is provided with a sewage inlet which is expandable to block the inside of the conduit and provided with a sewage inlet for controlling the inflow of sewage, the sludge removal packer It may be characterized by lowering the water level of the sewage during the movement of the group.

In addition, the packer may be connected to a rope passing through the intermediate conduit, it may be characterized by moving the packer by pulling the rope.

In addition, the front end of the sludge removal packer may be equipped with a camera so that the sedimentation state and the sewage level of the sludge can be confirmed from the outside.

In addition, the discharge pump is used to pump the sludge out of the second manhole, and the discharge of sewage may be controlled so that the amount of sludge pushed out of the outlet of the conduit does not exceed the capacity of the hydraulic pump.

In addition, the sewage pumped together when the sludge is pumped out of the second manhole may be characterized in that flowing back to the second pipe through the second manhole.

Hereinafter, embodiments of the present invention as described above will be described in detail with reference to the accompanying drawings.

Dredging method of the pipeline using the water pressure of the present invention is configured to effectively remove the sludge deposited by actively using the water pressure of the sewage, which can interfere with the operation.

Therefore, the present invention can be used in a small pipeline, as well as a long length between the manhole and the manhole and a large diameter, and can be usefully used in a large pipeline such as a collecting pipe, which is difficult for dredging. In addition, the present invention eliminates the large amount of sludge deposited but requires little extra power and does not cause damage to the pipeline during operation.

Hereinafter, the dredging method of the pipeline using the water pressure of the present invention will be described.

The dredging method of the present invention removes the sludge in the pipeline in such a way as to push the sludge into the rapid flow of sewage discharged at this time while blocking the pipeline from the inside of the pipeline. However, the sludge is pushed out stepwise by dividing the sludge into appropriate sections from the upstream inlet to the downstream outlet without pushing the sludge out at once. In this way, a large amount of sludge can be removed step by step in a large pipeline such as a long, large caliber collecting pipe between the manhole and the manhole.

Hereinafter, the dredging method of the present invention will be described in more detail using the illustrated equipment with reference to FIGS. 2 and 8 which are reference diagrams for sequentially explaining the dredging method according to the present invention. (However, for convenience of explanation, the intermediate pipeline 110 located between the upstream first pipeline 111 and the downstream second pipeline 112 is dredged, and the upstream and downstream of the intermediate pipeline 110 Each of the connected manholes will be referred to as a first manhole 121 and a second manhole 122.)

First, referring to FIG. 2, two packers 130 and 140, a camera 150, an air injection air pump 160, a discharge pump 170, and a pressure roll box 180 to implement the dredging method of the present invention. It can be seen that is provided.

The two packers 130 and 140 are sludge removal packers 130 for pushing the sludge deposited in the conduit 110 out of the conduit 110 and the rear of the sludge removal packer 130. In the sludge removal packer 130 is divided into a water volume control packer 140 to support the movement and work.

The sludge removal packer 130 is only part of the state to block the inner side of the pipeline 110, it is possible to push the sludge in the pipeline 110 by the rapid flow of sewage is ejected at this time. To this end, the sludge removal packer 130 is provided with a rubber tube 131 that blocks the inside of the pipe line 110 while expanding, and a sewage outlet 132 is provided at the center thereof so as to strongly discharge the sewage having a high water level. do. The sewage spout 132 may be one that can adjust the degree of opening and closing according to the situation, but may be an open mouth at all times.

The quantity adjusting packer 140 is located on the rear upstream side of the sludge removing packer 130 and adjusts the amount of sewage flowing into the sludge removing packer 130 to control the sludge removing packer 130. ) Support movement and operation. To this end, the water volume control packer 140 also has a rubber tube 141 is installed to block the inside of the conduit 110 when inflated like the sludge removal packer 130, it is possible to adjust the inflow of sewage in the center Sewage inlet 142 is provided to be. The sewage inlet 142 may be one that can adjust the degree of opening and closing according to the situation, but may be an open mouth at all times. However, the sewage inlet 142 may be formed to have a smaller diameter than the sewage outlet 132 of the sludge removing packer 130.

Here, the sludge removal packer 130 and the water volume control packer 140 is connected to each rope (133, 143) for movement. The ropes 133 and 143 allow the packers 130 and 140 to pass through the conduit 110 while connecting the packers 130 and 140 to move the packers 130 and 140 even outside the manhole.

The air pump 160 is used for injecting air into the sludge removal packer 130 and the quantity control packer 140, respectively. The sludge removing packer 130 and the quantity control packer 140 are connected to the air lines 161 and 162 to receive air from the air pump 160, respectively.

The discharge pump 170 is used to pump the sludge pushed out to the downstream outlet of the conduit 110 by the sludge removing packer 130 out of the second manhole 122. The suction pipe 171 is connected to the suction side of the discharge pump 170 and the discharge pipe 172 is connected to the discharge side.

The pressure roll box 180 is used to filter and store only the solid components of the sludge pumped by the discharge pump 170 and the sewage that is pumped together to the second pipe 110 through the discharge pipe 181. Used. The pressure roll box 180 is provided with a capacity capable of sufficiently storing the sludge.

If such a minimum of equipment is equipped it is possible to smoothly perform the dredging method of the present invention.

First, the sludge removing packer 130 and the quantity adjusting packer 140 are inserted into the first manhole 121 and lowered. Then, before and after this, the sludge removal packer 130 and the ropes 133 and 143 connected to the quantity control packer 140 pass through the pipeline 110, respectively, and the sludge removal packer is allowed by the ropes 133 and 143 on the ground. The machine 130 and the quantity control packer 140 to be moved respectively.

Thereafter, the ropes 133 and 143 are pulled from the second manhole 122 to insert the sludge removing packer 130 and the quantity adjusting packer 140 in the vicinity of the inlet of the conduit 110. Then, the sludge removing packer 130 is located in the downstream direction in the conduit 110 in the state as shown in FIG. 2, and the water volume adjusting packer 140 is located in the upstream direction. This completes the preparation for removing the sludge.

Then, when the sludge removal packer 130 is expanded to block the conduit 110 as shown in FIG. At this time, the sewage (W) is not yet ejected through the sewage outlet (132).

Then, as shown in Figure 4 when the water level of the sewage (W) is further increased to the place where the sewage outlet 132 of the sludge removal packer 130 is provided, the sewage (W) through the sewage outlet 132 has a high speed Is blown out. Then, the sludge accumulated near the front of the sludge removing packer 130 is pushed forward by the force of the sewage (W) ejected at a high speed, and some sludge is discharged through the downstream outlet of the conduit 110. It comes out to the second manhole 122. At this time, in the second manhole 122, the discharge pump 170 sucks the sludge pushed out from the outlet of the conduit 110 into the suction pipe 171 and discharges it to the discharge pipe 172 to the pressure roll box 180 Send to). Then, the pressure roll box 180 filters out and stores only the solid components of the transferred sludge and discharges the sewage back to the second pipe line 110 by the discharge pipe 181. This completes the first phase of work in the first section.

Subsequently, the operation of moving the sludge removing packer 130 to the front for a new stage of operation is performed as shown in FIG. 5. To this end, prior to the movement of the sludge removing packer 130, the water quantity adjusting packer 140 positioned upstream thereof is expanded to block the inside of the conduit 110. Then, as the inflow of the sewage (W) is blocked, the level of the sewage surrounding the sludge removal packer 130 becomes very low, thereby facilitating the movement of the sludge removal packer 130. This is because when the water level of the sewage (W) is lowered, the resistance due to the water pressure of the sewage (W) during the movement of the sludge removal packer 130 is reduced, so that the sludge removal packer 130 can be moved with only a small force. In addition, the sludge removal packer 130 for sludge removal in the vicinity of the front surface of the sludge is exposed to the outside of the sewer surface to check the image taken by the camera 150 on the ground with the image equipment (not shown) for sludge removal The packer 130 can be moved. Here, the sludge removal packer 130 is moved only to the place where the sludge is sufficiently removed in the previous step to prepare for a new step for removing the sludge that is not yet removed. In addition, in the intermediate preparation step as described above, the water volume control packer 140 may allow the inflow of some sewage by the sewage inlet 142 (see FIG. 2) without completely blocking the inside of the conduit 110. This is to withstand the water pressure of the sewage applied to the water volume control packer 140, and this does not prevent the movement of the sludge removal packer 130.

When the movement of the sludge removal packer 130 is completed in this way, as shown in FIG. 6, the sludge removal packer 130 is expanded to block the conduit 110 and at the same time, the water volume control packer 140 contracts to inflow of sewage. Allow a full range. Then, as described above with reference to FIG. 3, as the sewage W rises to the rear of the sludge removing packer 130, the water level increases. For reference, in FIG. 6, the water volume adjusting packer 140 is shown to move near the sludge removing packer 130, but the water volume adjusting packer 140 may not move like this.

Subsequently, when the water level of the sewage (W) is further increased as shown in FIG. 7 and rises to the place where the sewage outlet (132) of the sludge removal packer (130) is provided, the sewage (W) is rapidly increased through the sewage outlet (132). Is blown out. Then, the sludge deposited near the front of the sludge removal packer 130 is pushed forward by the force of the sewage (W) ejected at a high speed, and some sludge is discharged through the downstream outlet of the conduit 110. It comes out to the second manhole 122. At this time, in the second manhole 122, the discharge pump 170 sucks the sludge pushed out from the outlet of the conduit 110 into the suction pipe 171 and discharges it to the discharge pipe 172 to the pressure roll box ( 180). Then, the press roll box 180 filters out and stores only the solid components of the transferred sludge and discharges the remaining sewage back to the second manhole 122 by the discharge pipe 181 to flow through the second pipe 110. This completes the second phase of work in the second section.

When the second step is completed as described above, the operation of moving the sludge removal packer 130 to the front for a new step of work as shown in FIG. This preparation is carried out in the same manner as described with reference to FIG.

Then, the present invention repeatedly performs the operation steps for removing the sludge and the preparation steps for moving the sludge removal packer 130 as described above, the sludge deposited to the downstream outlet of the pipeline 110. Can be removed step by step clean.

The preferred embodiment of the present invention has been described above. The present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, in the dredging method of the pipeline using the water pressure of the sewage according to the present invention, sludge can be easily removed even in a large pipeline such as a collecting pipe.

In addition, since the present invention uses the water pressure of the sewage flowing from the upstream side for sludge removal, almost no additional power for sludge removal is required.

In addition, the present invention does not send the sludge to another pipeline because it removes while adjusting the amount of sludge as appropriately removable through the manhole.

In addition, the present invention does not require the use of equipment that can damage the pipeline, such as a bucket, to remove sludge.

Claims (7)

As a dredging method for dredging the inside of the pipeline located in the middle between the first manhole connected to the upstream direction and the second manhole connected to the downstream direction, The part of the intermediate pipe is blocked in a state where the pipe is closed. At this time, the sludge in the pipeline is pushed out by the rapid flow of sewage discharged, and is expandable to block the inside of the pipeline in order to push out the sludge. Using a sludge removal packer provided with a sewage outlet for the sludge, by dividing the section from the upstream side inlet to the downstream outlet of the conduit to push the sludge removal packer step by step for each section, to push out the sludge, Dredging method of the pipeline using the hydraulic pressure of the sewage, characterized in that the sludge pushed out to the downstream outlet of the pipeline in each of the steps to the outside of the second manhole. delete The method of claim 1, In the pipe spaced a predetermined distance upstream from the sludge removal packer, a water quantity adjusting packer provided with a sewage inlet which is expandable to block the inside of the pipe and can regulate the inflow of sewage is further introduced, thereby providing the sludge removal packer. Dredging method of pipeline using sewage water pressure, characterized by lowering the level of sewage during movement. The method according to claim 1 or 3, The packer is connected to a rope passing through the intermediate pipe, dredging method of the pipeline using sewage water pressure, characterized in that for moving the packer by pulling the rope. The method according to claim 1 or 3, Dredging method of the pipeline using sewage water pressure, characterized in that the front of the sludge removal packer is equipped with a camera so that the sedimentation state and the sewage level of the sludge can be confirmed from the outside. The method according to claim 1 or 3, A discharge pump is used to pump sludge out of the second manhole, and the discharge of sewage is controlled so that the amount of sludge pushed out of the outlet of the conduit does not exceed the capacity of the hydraulic pump. Dredging method of pipeline. The method of claim 6, The sewage pumped together when the sludge is pumped out of the second manhole flows again to the second pipeline through the second manhole dredging method using a sewage water pressure.

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