JP2012219584A - Slime processing device and slime processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow slime accumulated on a bottom of a pile hole to be efficiently discharged to the ground.SOLUTION: A slime processing device 1 includes a pump 2 sucking slime 35 accumulated on a bottom 27 within a pile hole 25 together with muddy water 36. The pump 2 is provided with a hood 15 so as to surround the pump 2. The hood 15 has an outer surface formed in a shape corresponding to the inner surface of the bottom 27 of the pile hole 25. Since the slime 35 in a portion corresponding to the inner side of the hood 15 is sucked and discharged, the slime 35 is not spread over a wide area within the pile hole 25 and the slime 35 accumulated on the bottom 27 of the pile hole 25 can be efficiently sucked and discharged to the ground.

Description

  The present invention relates to a slime treatment apparatus and a slime treatment method, and more particularly to a slime treatment apparatus and a slime treatment method effective for treating slime deposited on the bottom of a pile hole.

  Conventionally, when constructing cast-in-place piles and wall piles, the slime deposited on the bottom of the pile holes affects the quality of cast-in-place piles and wall piles to be built. The slime deposited on the bottom is discharged to the ground.

  For example, the slime processing apparatus described in Patent Document 1 is a device in which a pump (spiral pump) that sucks slime into a wire of a winch is suspended, and the pump is drilled by operating the winch and feeding out the wire. It is arranged at the bottom of the pile hole and is configured to treat the slime deposited at the bottom of the pile hole by operating the pump and sucking the slime deposited at the bottom of the pile hole with mud and discharging it to the ground. is there.

  In this case, a suction port and an impeller are respectively provided at the upper and lower portions of the pump, and a plurality of injection nozzles are provided at the lower portion, and the muddy water containing the slime in the pile hole is moved upward by the operation of the upper impeller. By sucking in from the suction port and spraying from each spray nozzle toward the inner peripheral surface of the pile hole, the slime accumulated at the bottom of the pile hole is disturbed. Also, the operation of the lower impeller sucks mud water in a state where the slime is disturbed from the lower suction port and discharges it to the ground via a drain pipe connected to the discharge port.

JP 2000-120067 A

  By the way, in the slime processing apparatus having the above-described configuration, at the bottom of a pile hole having a large cross section (for example, a shaft portion: 3.0 m × 6.5 m, an expanded bottom portion: 4.5 m × 8 m pile hole). When applied to the treatment of accumulated slime, the slime accumulated at the bottom of the pile hole diffuses over a wide range, so that the treatment of the slime takes time and labor, and the work becomes very inefficient.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a slime treatment apparatus and a slime treatment method capable of efficiently treating slime deposited on the bottom of a pile hole having a large cross section. To do.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a slime processing apparatus provided with a pump that sucks slime deposited in the bottom of a pile hole together with muddy water, and the pump is provided with a hood so as to surround the pump. To do.

  According to the slime processing apparatus of the present invention, the slime that has accumulated in the bottom portion of the pile hole corresponding to the inside of the hood can be sucked together with the muddy water by the operation of the pump, so that the slime diffuses widely in the pile hole. There is no such thing, and the slime deposited at the bottom of the pile hole can be efficiently sucked and discharged to the ground.

  In the present invention, the hood may be formed such that the outer surface matches the inner surface of the bottom portion of the pile hole.

  According to the slime processing apparatus of the present invention, since the hood is formed in a shape that matches the inner surface of the bottom of the pile hole, even when applied to the treatment of slime deposited on the bottom of the pile hole having an expanded bottom. The slime deposited on the bottom of the pile hole can be efficiently sucked and discharged to the ground.

  Further, in the present invention, the pump has a suction port for sucking slime deposited on the bottom of the pile together with the muddy water, and a jet for injecting a part of the muddy water sucked from the suction port toward the bottom of the pile hole. The hood may be provided so as to surround at least the suction port and the injection port.

  According to the slime treatment apparatus of the present invention, a part of the muddy water sucked from the suction port of the pump can be jetted from the jet port toward the bottom of the pile hole, so that the slime deposited on the bottom of the pile hole is muddy water. While being disturbed, mud containing slime can be sucked and discharged to the ground, and the slime deposited at the bottom of the pile hole can be treated efficiently.

  Furthermore, in the present invention, the pump may be provided with an annular injection pipe, and the injection ports may be provided at a plurality of locations of the injection pipe.

  According to the slime treatment apparatus of the present invention, a part of the muddy water sucked from the suction port of the pump is guided to the injection pipe, injected from each injection port of the injection pipe toward the bottom of the pile hole, and accumulated at the bottom of the pile hole. Slime can be disturbed. In this case, since the injection pipe is formed in an annular shape and injection ports are provided at a plurality of locations of the annular injection pipe, the slime deposited on the bottom of the pile hole corresponding to the inside of the hood can be efficiently disturbed. Can do.

  Furthermore, in the present invention, the injection port may be provided downward or obliquely downward.

  According to the slime treatment apparatus of the present invention, since the injection port is provided downward or obliquely downward, the disturbed slime can be convected in the inner portion of the hood, and thus accumulated at the bottom of the pile hole. Slime can be efficiently sucked with mud and discharged to the ground.

  Furthermore, in this invention, the said pile hole is good also as being a pile hole of a large cross section.

  According to the slime treatment apparatus of the present invention, when applied to a pile hole having a large cross section, the slime deposited on the bottom of the pile hole does not diffuse widely, and the slime deposited on the bottom of the pile hole is not It can be efficiently sucked and discharged to the ground.

  Furthermore, this invention is a slime processing method using the slime processing apparatus of Claim 1, Comprising: The slime deposited on the bottom part of the pile hole corresponding to the inner side of the said hood by operating the said pump. It is characterized by being sucked with muddy water and discharged to the ground.

  According to the slime treatment method of the present invention, since the slime accumulated in the bottom portion of the pile hole corresponding to the inside of the hood can be sucked together with the muddy water by the operation of the pump, the slime diffuses widely in the pile hole. There is no such thing, and the slime deposited at the bottom of the pile hole can be efficiently sucked and discharged to the ground.

  As described above, according to the slime processing apparatus and the slime processing method of the present invention, the slime deposited on the bottom of the pile hole can be efficiently processed. Moreover, the slime deposited on the bottom of the pile hole of the expanded bottom pile can be processed efficiently. Furthermore, when applied to a pile hole having a large cross section, the slime deposited on the bottom of the pile hole can be efficiently processed.

It is the schematic which showed one Embodiment of the slime processing apparatus by this invention. It is a bottom view of the slime processing apparatus of FIG. It is sectional drawing which showed an example of the injection tube of a slime treatment apparatus. It is sectional drawing which showed the other example of the injection pipe of a slime processing apparatus. It is the schematic which showed the modification of the slime processing apparatus. It is the perspective view which showed an example of the pile to which the slime processing apparatus by this invention is applied. It is sectional drawing of FIG. It is explanatory drawing which showed the processing procedure of the slime by the slime processing apparatus by this invention. It is explanatory drawing which showed the process of slime processing by the slime processing apparatus by this invention. It is explanatory drawing which showed the slime process in the slime processing apparatus by this invention, Comprising: It is explanatory drawing which showed the relationship between the operation time of the pump by each operation mode, and the specific gravity (density) of muddy water. It is explanatory drawing which showed the movement procedure of the pump in the bottom part of a pile hole. It is explanatory drawing which showed the suction | inhalation state of the slime in each position of FIG. It is sectional drawing which showed the other example of the pile to which the slime processing apparatus by this invention is applied.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of a slime processing apparatus according to the present invention. The slime processing apparatus 1 of this Embodiment is effective in discharging | emitting the slime deposited on the bottom part of a pile hole on the ground, and processing, for example, when constructing a cast-in-place pile and a wall pile.

  That is, the slime treatment apparatus 1 of the present embodiment sucks the slime 35 deposited on the bottom 27 of the pile hole 25 together with the muddy water 36 in the pile hole 25 and discharges it to the ground as shown in FIGS. 1 and 2, for example. The pump 2 is provided, a hood 15 provided so as to surround the periphery of the pump 2, and a winch 21 (see FIG. 8) for raising and lowering the pump 2.

  The pump 2 is, for example, a submersible sand pump, and has a function of sucking the slime 35 deposited on the bottom 27 of the pile hole 25 together with the muddy water 36 and discharging it to the ground, and a part of the sucked muddy water 36 at the bottom of the pile hole 25. The pump main body 3 provided with the function to inject toward 27, and the motor 11 which drives the pump main body 3 are provided.

  The pump body 3 includes a casing 4, an impeller 5 and a stirring blade 6 that are rotatably provided in the casing 4, a discharge port 7 provided in a portion corresponding to the outer periphery of the impeller 5 of the casing 4, A plurality of suction ports 8 provided at corresponding portions between the impeller 5 and the stirring blade 6 are provided, and the impeller 5 and the stirring blade 6 are connected to a rotating shaft of a motor 11 provided at the upper portion of the pump body 3. .

By operating the motor 11 and rotating the impeller 5 and the stirring blade 6, the slime 35 deposited on the bottom 27 of the pile hole 25 below the pump body 3 is stirred, and the stirred slime 35 is mixed with the muddy water 36. It is sucked into the casing 4 from the suction port 8, discharged to the ground from the discharge port 7 through the lifting mud hose 12, and collected in a collection tank 20 (see FIG. 9) installed on the ground.
The slime 35 deposited on the bottom of the pile hole 25 is also disturbed by the pressure of the muddy water 36 injected from the injection port 10 described later.

  An annular injection pipe 9 is provided in an outer portion of the casing 4 above the impeller 5 of the pump body 3 so as to surround the casing 4, and the casing of the pump body 3 is inserted into the injection pipe 9 from the suction port 8. Part of the muddy water 36 sucked into 4 is guided.

  On the lower surface side of the injection pipe 9, injection ports 10 are provided at a plurality of locations at predetermined intervals in the circumferential direction, and muddy water 36 guided to the injection pipe 9 through each injection port 10 is injected downward. The As the injection tube 9, for example, as shown in FIGS. 3 and 4, a round tube having a circular cross section or a square tube having a square cross section can be used.

  Each injection port 10 is preferably provided on the lower surface side of the injection tube 9 so as to face the vertical direction, but may be provided so as to be inclined at a predetermined angle with respect to the vertical direction. Further, the number of the injection pipes 9 is not limited to one on the outside of the casing 4 of the pump body 3, and two or more injection pipes 9 may be provided, and a plurality of injection ports 10 may be provided on the lower surface side of each injection pipe 9. Good.

  Instead of the annular injection pipes 9, as shown in FIG. 5, a plurality of linear injection pipes 9 are provided radially outside the casing 4 of the pump body 3, and the downward injection is performed at the tip of each injection pipe 9. You may comprise so that the opening | mouth 10 may be provided.

  The pump 2 sucks the slime 35 together with the muddy water 36 from the suction port 8 and sucks the slime 35 together with the muddy water 36 from the discharge port 7 or discharges it to the ground through the lifting mud hose 12 from the discharge port 7 and lifts it from the discharge port 7. While being discharged to the ground through the mud hose 12, a part of the mud water 36 sucked from the suction port 8 is guided to the injection pipe 9, and this mud water 36 is directed from each injection port 10 of the injection pipe 9 toward the bottom 27 of the pile hole 25. Either one of the suction mode and the disturbance mode to be injected can be selected.

The food | hood 15 is formed in the shape according to the inner surface shape of the pile hole 25 of the object which processes the slime 35. FIG. In this Embodiment, as shown in FIG.6 and FIG.7, the bottom expanded pile 24 (for example, axial part 24a: 3.0mx6.5m, bottom expanded part 24b: oval cross section (glass shape)): 4.5m x 8.0m, excavation depth: GL-31.7m-45.0m widened pile)) In order to be applied to the treatment of slime 35 deposited on the bottom 27 of the pile hole 25, formed in a substantially conical shape Has been.
Here, the expanded bottom pile with a large cross section means that the length of the expanded bottom portion is 4000 mm or more, the width is 2500 mm or more, and the cross-sectional area is 16 m ² or more.

  Specifically, as shown in FIG. 1, the upper end includes a truncated cone-shaped main body portion 16 attached to the upper end of the pump 2 and a cylindrical rising portion 17 provided integrally with the lower end of the main body portion 16. The upper end is closed and the lower end is formed in a substantially conical shape.

  In this case, the height of the hood 15 and the attachment position to the pump 2 are set so that the lower end of the rising portion 17 is located on the same plane as the lower end of the pump body 3. Thereby, when the pump 2 is settled to the bottom 27 of the pile hole 25, the lower end of the hood 15 can be brought into contact with the bottom 27 of the pile hole 25. Can be sucked in by the pump 2.

  The rising portion 17 is formed to be the same as or slightly lower than the rising portion 29 of the bottom widened portion 28 of the pile hole 25, whereby the rising portion 17 of the hood 15 can be along the rising portion 29 of the bottom widened portion 28. The slime 35 deposited on the portion of the portion 28 along the rising portion 29 can also be sucked in without being left behind.

  The upper end of the hood 15 is provided with an opening (not shown) including holes, grooves, gaps and the like penetrating the inside and outside of the hood 15, and the muddy water 36 in the hood 15 is passed through the opening above the hood 15. The pump 2 can be smoothly lowered into the pile hole 25.

  And in order to process the slime 35 deposited on the bottom 27 of the pile hole 25 of the expanded pile by the slime processing apparatus 1 of the present embodiment configured as described above, for example, as shown in FIG. The left and right shaft portions 26 and the bottom-expanded portion 28 are excavated by the earth drill machine 30, and as shown in FIG. 8 (b), the horizontal multi-axis type or bucket type excavator 31 performs the hollow excavation and bottom roughness. As shown in FIG. 8 (c), the pile hole 25 of the expanded bottom pile with a large cross section is formed by excavating the bottom expanded portion 28 of the center portion and roughening the bottom with the earth drill machine 30.

  And as shown in FIG.8 (d), by installing the slime processing apparatus 1 of this Embodiment in the opening edge part of the pile hole 25, operating the winch 21, and pay | feeding out the wire 22 from the winch 21, The pump 2 attached to the tip of the wire 22 is lowered in the pile hole 25 and settled on the bottom 27.

  Then, by operating the pump 2, the slime 35 deposited on the bottom 27 of the pile hole 25 corresponding to the inside of the hood 15 is sucked from the suction port 8 together with the muddy water 36, and as shown in FIG. It is discharged from the outlet 7 to the ground via the mud hose 12 and recovered in the recovery tank 20 on the ground.

  In this case, the pump 2 is operated while alternately switching between the suction mode and the suction / disturbance mode, and the slime 35 deposited on the bottom 27 of the pile hole 25 inside the hood 15 is sucked and discharged to the ground. Process.

  Specifically, as shown in FIG. 10, first, the operation mode of the pump 2 is set to the suction mode, the pump 2 is operated, the mud 36 is sucked together with the slime 35 from the suction port 8, and the The muddy water 36 containing the slime 35 is collected in the collection tank 20 installed on the ground.

  At this time, as shown in FIG. 9, by measuring the specific gravity or density of the mud water 36 discharged to the ground through the mud hose 12 by the measuring device 37, the slime 35 (mainly sand) contained in the mud water 36 is measured. The amount is measured one by one, and the operation in this mode is continued until the specific gravity or density of the muddy water 36 rises to a predetermined value and then starts to fall (FIG. 10A).

  Next, the pump 2 is temporarily stopped, the operation mode is switched to the suction / disturbance mode, the pump 2 is operated, the mud water 36 is sucked together with the slime 35 from the suction port 8, and the mud containing the slime 35 through the mud hose 12. 36 is collected in the collection tank 20 installed on the ground, and part of the muddy water 36 sucked from the suction port 8 is guided to the injection pipe 9, and directed from each injection port 10 of the injection pipe 9 toward the bottom 27 of the pile hole 25. The slime 35 deposited on the bottom 27 of the pile hole 25 is disturbed and diffused throughout the inside of the hood 15.

  At this time, as shown in FIG. 9, by measuring the specific gravity or density of the mud water 36 discharged to the ground through the mud hose 12 by the measuring device 37, the slime 35 (mainly sand) contained in the mud water 36 is measured. The amount is measured one by one, and the operation in this mode is continued until the specific gravity or density of the muddy water 36 rises to a predetermined value (FIG. 10 (A)).

  Next, the pump 2 is temporarily stopped, the operation mode is switched to the suction mode, the pump 2 is operated, the mud water 36 is sucked together with the slime 35 from the suction port 8, and the mud water 36 containing the slime 35 is passed through the mud hose 12. It collects in the collection tank 20 installed on the ground.

  At this time, as shown in FIG. 9, the specific gravity of the muddy water 36 collected through the mud hose 12 or the density is measured one by one with the measuring device 37, thereby the amount of slime 35 (mainly sand content) contained in the muddy water 36. Measurement is performed step by step, and the operation in this mode is continued until the specific gravity or density of the muddy water 36 falls to a predetermined value (FIG. 10 (c)).

  Similarly, the pump 2 in the suction / disturbance mode (FIG. 10 (D)), the suction mode (FIG. 10 (O)), the suction / disturbance mode (FIG. 10 (F)) and the suction mode (FIG. 10 (G)). The operation of the pump 2 in these modes is alternately performed while measuring the specific gravity or density of the muddy water 36 one by one with the measuring device 37, and the operation of the pump 2 in these modes changes in the specific gravity or density of the muddy water 36. The operation is continued until it is no longer seen, and when the change in the specific gravity or density of the muddy water 36 is no longer observed, the discharge of the slime 35 is completed, and the operation in each mode of the pump is stopped.

  11 and 12, the pump 2 is rotated clockwise or counterclockwise along the inner surface of the bottom 27 of the pile hole 25 as shown in FIGS. While moving as in g) and wrapping the hood 15 by a predetermined amount, as shown in FIGS. 12A to 12F, the bottom 27 of the pile hole 25 corresponding to the inside of the hood 15 is formed. By sucking and discharging the slime 35 to the ground, it is possible to discharge the slime 35 to the ground and collect it in the collection tank 20 without leaving the entire amount of the slime 35 deposited on the bottom 27 of the pile hole 25.

  In the slime processing apparatus 1 of the present embodiment configured as described above, the hood 15 is provided so as to surround the periphery of the pump 2, and deposited on the bottom 27 of the pile hole 25 corresponding to the inside of the hood 15. Since the slime 35 is sucked and discharged to the ground, the pump 2 is moved along the inner surface of the bottom 27 of the pile hole 25 and the hood 15 is wrapped by a predetermined amount so that there is no hood. The slime 35 does not spread over a wide area of the bottom 27 of the pile hole 25 as in the conventional slum processing apparatus that sucks slime with the pump and discharges it to the ground. Therefore, even when applied to the pile hole 25 of the expanded bottom pile with a large cross section, the entire amount of the slime 35 deposited on the bottom 27 of the pile hole 25 can be efficiently sucked and discharged to the ground for recovery.

  Further, the pump 2 sucks the slime 35 together with the muddy water 36, sucks the slime 35 together with the muddy water 36, and injects a part of the sucked muddy water 36 toward the bottom 37 of the pile hole 35, Since it is configured to be able to switch to a suction / disturbance mode that disturbs the accumulated slime 35, the suction mode and the suction / disturbance mode are repeated alternately, and this mode is repeated for the specific gravity of the sand contained in the slime 35 or By continuing until the density does not change, the entire amount of slime 35 deposited on the bottom 27 of the pile hole 25 can be reliably sucked and discharged to the ground.

  Further, since the injection port 10 of the injection pipe 9 for injecting the muddy water 36 is provided downward or obliquely downward in the injection pipe 9, the slime deposited on the bottom 27 of the pile hole 25 corresponding to the inside of the hood 15. 35 can be efficiently disturbed and convected inside the hood 15, so that the slime 35 can be efficiently diffused throughout the muddy water 36 inside the hood 15 and deposited on the bottom 27 of the pile hole 25. The slime 35 is efficiently sucked and discharged to the ground.

  In the above description, the hood is formed in a substantially conical shape in accordance with the inner shape of the pile hole 25 of the expanded bottom pile having a large cross section. However, depending on the inner shape of the pile hole 25, a substantially pyramid shape and a cylindrical shape are formed. Alternatively, it may be formed in a shape such as a rectangular tube.

  Moreover, it is applicable not only to the pile hole 25 of the large-diameter bottomed pile but also to the treatment of slime deposited on the bottom of the pile hole of the wall pile of a large cross-section or other general piles. In this case, the same effects can be obtained.

  Furthermore, in the above description, the slime treatment apparatus of the present invention was applied to a pile hole of an expanded bottom pile having an oval cross section (glass shape), but an oval cross section (track shape) as shown in FIG. An oval cross section (dumpling shape) as shown in FIG. 13 (b), a rectangular cross section as shown in FIG. 13 (c), and a shape in which the central portion of the rectangular cross section as shown in FIG. For example, the present invention may be applied to a pile hole of an expanded bottom pile having various cross-sectional shapes.

DESCRIPTION OF SYMBOLS 1 Slime processing apparatus 2 Pump 3 Pump main body 4 Casing 5 Impeller 6 Stirrer blade 7 Discharge port 8 Suction port 9 Injection pipe 10 Injection port 11 Motor 12 Mud hose 15 Hood 16 Main part 17 Standing part (rising part of hood)
20 Recovery tank 21 Winch 22 Wire 24 Expanded pile 24a Shaft portion 24b Expanded bottom portion 25 Pile hole 26 Shaft portion 27 Bottom portion 28 Expanded portion 29 Standing portion (rise portion of the expanded bottom portion)
30 Earth drill machine 31 Excavator 35 Slime 36 Muddy water 37 Measuring instrument

Claims (7)

A slime treatment device comprising a pump for sucking slime deposited in the bottom of the pile hole together with muddy water,
A slime processing apparatus, wherein a hood is provided on the pump so as to surround the pump.   The slime processing apparatus according to claim 1, wherein the hood has an outer surface formed in a shape matching an inner surface of a bottom portion of the pile hole.   The pump has a suction port for sucking slime deposited on the bottom of the pile together with muddy water, and an injection port for injecting a part of the muddy water sucked from the suction port toward the bottom of the pile hole, The slime processing apparatus according to claim 1, wherein the hood is provided so as to surround a periphery of the suction port and the injection port.   The slime processing apparatus according to claim 3, wherein the pump is provided with an annular injection pipe, and the injection ports are provided at a plurality of locations of the injection pipe.   The slime processing apparatus according to claim 3 or 4, wherein the injection port is provided downward or obliquely downward.   The said pile hole is a pile hole of a large cross section, The slime processing apparatus of any one of Claims 1-5 characterized by the above-mentioned. A slime treatment method using the slime treatment apparatus according to claim 1,
The slime processing method characterized by operating the said pump and sucking the slime accumulated in the bottom part of the pile hole corresponding to the inner side of the said hood with mud water, and discharging | emitting to the ground.