WO2015052752A1 - Dispositif d'insertion d'un tubage dans le sol et procédé d'insertion d'un tubage dans le sol l'utilisant - Google Patents

Dispositif d'insertion d'un tubage dans le sol et procédé d'insertion d'un tubage dans le sol l'utilisant Download PDF

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Publication number
WO2015052752A1
WO2015052752A1 PCT/JP2013/077248 JP2013077248W WO2015052752A1 WO 2015052752 A1 WO2015052752 A1 WO 2015052752A1 JP 2013077248 W JP2013077248 W JP 2013077248W WO 2015052752 A1 WO2015052752 A1 WO 2015052752A1
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WO
WIPO (PCT)
Prior art keywords
casing
underground
rod
penetrating
stirring blade
Prior art date
Application number
PCT/JP2013/077248
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English (en)
Japanese (ja)
Inventor
飯田　孝次
真 神村
俊守 前
Original Assignee
株式会社サムシング
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社サムシング filed Critical 株式会社サムシング
Priority to JP2015541316A priority Critical patent/JPWO2015052752A1/ja
Priority to PCT/JP2013/077248 priority patent/WO2015052752A1/fr
Publication of WO2015052752A1 publication Critical patent/WO2015052752A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable

Definitions

  • the present invention relates to a casing underground entrainment device that entrains a casing used for geothermal use and the like in a single step without rotation and leaves it, and a casing underground entrainment method using the same.
  • JP-A-2005-36413 has a problem that it can be applied only to a large-diameter steel pipe because a drilling blade is attached to the tip of the steel pipe casing.
  • the steel pipe of the steel pipe standing pile buried in the ground is in a state in which the soil is left as it is, and there is a problem that water used for geothermal use cannot be loaded in the steel pipe.
  • an object of the present invention is to allow a small-diameter casing that can be used for geothermal use or the like simultaneously with excavation to be entrained in the ground without causing soil to enter the casing and to generate excavation residual soil.
  • An object of the present invention is to provide a casing underground entrainment apparatus and a casing underground entrainment method using the same.
  • the present invention solves the above-described conventional problems, and a stirring blade that is rotatable in a plane parallel to the underground penetrating rod is attached to a side portion of the underground penetrating rod.
  • An underground penetrating device provided with a penetrating protrusion integral with the underground penetrating rod above the casing, and a casing formed with a protrusion engaging with the penetrating convex portion having a through hole in the center on the lower inner wall surface of the casing
  • a blade diameter (w 2 ) in a state where the underground penetrating rod is pulled up and the stirring blade is folded is smaller than a minimum inner diameter (m 1 ) of the casing.
  • An underground entrainment device is provided.
  • the present invention uses the casing underground entrainment device, expands the stirring blade, rotates the underground penetrating rod, drills the ground and penetrates to a target depth
  • the underground penetrating rod includes
  • a casing underground entrainment method characterized by performing the lifting step II, folding the stirring blade, lifting the underground penetration device to the ground, and leaving the casing in the ground.
  • the present invention uses the casing underground entrainment device, expands the stirring blade, rotates the underground penetrating rod, drills the ground and penetrates to a target depth
  • the underground penetrating rod includes A casing ground characterized by performing the IIA step of reversely rotating to remove the joint screw, pulling the upper rod up to the ground, and leaving the casing and the lower rod with the stirring blades in the ground. It provides a medium entrainment method.
  • a small-diameter casing that can be used for geothermal use or the like at the same time as excavation can be taken into the ground without the soil substantially entering the casing.
  • the casing can be applied not only to the use of geothermal heat, but also to a temporary disaster prevention well for promoting rainwater penetration into the ground or for disaster prevention such as earthquakes.
  • the casing can also be embedded as an outer tube for inserting a drain material as a countermeasure against liquefaction.
  • FIG. 1 It is a simplification figure showing a part of casing underground entrainment device in an embodiment of the invention in section. It is a decomposition
  • FIG. 9 It is a figure explaining a casing underground entrainment method, and is a figure in the middle of pulling out an underground penetration device. It is a figure in the middle of extracting the underground penetration apparatus following FIG. It is a process following FIG. 9, and is a view of a state in which the underground penetrating device is completely pulled out. It is a figure explaining the III process of mounting
  • FIG. 1 It is a simplified sectional view of a casing underground entrainment device in another embodiment. It is a perspective view of the ring member for angle adjustment used with the casing underground entrainment apparatus of FIG. It is another perspective view of the ring member for angle adjustment used with the casing underground entrainment apparatus of FIG. It is a perspective view of the ring member for angle adjustment which formed the reverse inclination wing
  • FIGS. 1 and 2 A casing underground entrainment apparatus (hereinafter also simply referred to as “underground entrainment apparatus”) according to a first embodiment of the present invention will be described with reference to FIGS.
  • the underground entrainment device 10 is an assembly of the underground penetration device 1 and the casing 2.
  • the casing 2 is a submerged member that uses, for example, geothermal heat, in which the soil does not substantially enter the casing, and the underground penetration device 1 is pulled out and used for re-excavation.
  • the underground penetrating device 1 is a device that engages the casing 2 while being engaged with the casing 2 while excavating, and is an underground penetrating rod (hereinafter simply referred to as “rod”) having a conical portion 14 at the tip.
  • the stirring blades 13 that are rotatable in a plane parallel to the rod 11 are attached to the side portions of 11, in this example both sides, and the penetrating protrusions 12 that are integral with the rod 11 are provided above the stirring blades 13. Attached.
  • the tip of the surface of the rod 11 on the ground surface side is connected to a penetrating input imparting device such as a known vibro drill (VD) type boring device (Japanese Patent No. 5021104) that imparts vibration or rotation to the rod 11.
  • VD vibro drill
  • the rod 11 can be used by connecting a plurality of rods by a screw joint 112 or the like according to the depth.
  • the upper rod 11a and the lower rod 11b are connected by a screw joint 112 formed slightly above the penetrating protrusion 12.
  • the tip cone portion 14 examples include a spiral blade formed at the tip of a rod, such as a known boring device, and a pointed portion at the tip of the rod. Since the blades bite into the ground by the first penetration by the spiral blade or the pointed portion at the tip, the rod 11 can be easily penetrated.
  • the tip cone portion 14 is a spiral blade, the outer diameter of the spiral blade is smaller than the hole diameter (m 1 ) of the lower opening (through hole) of the casing 2.
  • the tip cone 14 is an optional component. Even without the tip cone portion 14, the rod 11 can penetrate into the ground by the excavating force of the stirring blade 13.
  • the stirring blade 13 is pivotally supported on the side of the lower rod 11b so as to be rotatable in a plane parallel to the rod axis. That is, the two stirring blades 13 are respectively installed on the rotating shafts 131 arranged side by side on the lower rod 11b. Since one stirring blade 13 is supported by one rotating shaft 131, the support strength is increased. Further, the tip of the lower rod 11b is a cone-shaped portion 14 having a pointed end at the plate-like body. Since the tip of the lower rod 11b is a plate-like body, the portion of the stirring blade 13 that comes into contact with the plate-like body is a flat surface, and therefore the tip 132 of the stirring blade 13 has a cutting angle ( (See FIG. 4).
  • a protrusion 141 that regulates the opening degree of the stirring blade 13 is formed integrally with the lower rod 11b on the side end near the lower side of the rotating shaft 131. Thereby, an opening as shown in FIG. 1 can be determined easily.
  • the surface of the stirring blade 13 has a substantially semi-elliptical cross-sectional shape as shown in FIGS. Thereby, intensity
  • the stirring blade 13 is in an open state at the time of stirring, and the blade diameter becomes large.
  • the stirring blade 13 is folded (state in FIG. 9), and the blade diameter is the blade width (w 2 ). Become smaller.
  • the blade diameter (length in the horizontal direction) (w 2 ) after being folded is substantially the same as the diameter of the lower rod 11b, and the lower opening (through hole hole) diameter (m 1 ), which is the minimum inner diameter of the casing 2. ) Is smaller.
  • the stirring blade 13 is two blades that are pivotally supported by two horizontally arranged shafts, but is not limited thereto, and may be one, three, or four blades. Good.
  • the 3-blade and 4-blade have a triangular cross section and a quadrangular cross section, respectively, and the stirring blade 13 is slightly smaller than the axial width to rotate in a plane parallel to the rod. It can be made freely.
  • the shape of the stirring blade 13 is not limited to a semi-elliptical cross-sectional shape, and is appropriately determined such as a flat plate shape.
  • the maximum blade diameter with the stirring blade 13 open is larger than the maximum outer diameter (l 1 ) of the casing 2.
  • the penetrating protrusion 12 is engaged (contacted) with the protrusion 23 of the casing 2 and has a function of bringing the casing 2 into the ground as the rod 11 enters the ground. It is located and is a convex part attached integrally with the rod 11 above the stirring blade 13. Thereby, soil does not enter the casing 2 due to the rod 11 entering the ground. Further, the maximum outer diameter (d) of the penetrating protrusion 12 is smaller than the minimum inner diameter (l 2 ) of the casing 2. Thereby, the underground penetration apparatus 1 can be extracted with the casing 2 buried in the ground. Penetrating the convex portion 12 is a cylindrical with a large diameter by a distance 2u than the diameter of the lower rod 11b (w 2) (see FIG.
  • connection part of the penetration convex part 12 and the lower rod 11b has a 90-degree level
  • the penetration convex part 12 is a cylindrical large-diameter part, and has thickness and mass, it can endure the strength and impact at the time of vibro vibration or impact.
  • the penetrating convex portion 12 which is a cylindrical large-diameter portion may have an inclined portion or a constriction as shown in FIG.
  • the casing 2 has an annular protrusion 23 that is engaged with the penetrating protrusion 12 having a through hole 25 in the center on the lower inner wall surface, and is entrained in the ground together with the underground penetrating device 1 and buried in the ground.
  • the protrusion 23 has a locking surface (horizontal plane) 231 that locks with a lower end surface (horizontal plane) 121 of the penetrating protrusion 12.
  • the casing 2 has a hollow portion 22 having an inner diameter (l 2 ) above the protrusion 23.
  • the casing 2 is an inverted half-cone portion 24 below the protrusion 23. That is, the outer peripheral surface of the inverted half cone portion 24 is an inclined surface that gradually decreases in diameter toward the lower side. As a result, the lower inverted semiconical portion 24 on the lower side suppresses the generation of the soil, and the tip portion 29 functions as a member that closes the stirring blade 13 when the rod 11 is pulled up. Further, the center of the lower end of the inverted half-cone portion 24 forms an opening. The diameter of the opening surrounded by the protrusion 23 and the diameter of the opening at the lower end of the inverted half-cone portion 24 may be the same or different.
  • the formation position of the protrusion 23 in the casing 2 is not limited to the above form.
  • the casing 2 is not limited to a tapered shape as in the present example, and may have the same diameter over the entire length.
  • both the opening (through hole) diameter (m 1 ) formed between the circumferential tips of the protrusions 23 and the opening diameter of the lower end of the inverted half-cone portion 24 are the blade diameter (w 2 ) of the stirring blade 13 in the folded state. Or larger than the width of the lower rod 11b. Thereby, the underground penetration apparatus 1 can be pulled out through the casing 2 without resistance.
  • the casing 2 After the casing 2 is buried in the ground, there is substantially no soil in the casing 2, and the casing 2 is a pipe-like underground buried member for geothermal use, rainwater use, or groundwater use, or liquefied. It can be used as a drain material for countermeasures.
  • the casing 2 may be formed with slits, through holes, and the like according to the purpose of use. Further, the inner diameter (l 2 ) of the casing 2 is larger than the outer diameter (d) of the penetrating protrusion 12 of the rod 11. Thereby, the underground casing 2 can be left and the underground penetration apparatus 1 can be pulled out.
  • a plurality of pieces can be used together.
  • a casing having an outer diameter (l 1 ) of about 50 mm to 400 mm can be used.
  • the stirring blade 13 and the casing 2 are not locked. Therefore, even if the rod 11 rotates and the stirring blade 13 rotates, the casing 2 does not rotate.
  • the stopper member 4 is an optional component in the present invention, and includes a lid member 41 and a stopper 7 that regulates the movement of the lid member 41.
  • the lid member 41 includes a disc-shaped lid body portion in which a through-hole through which a rod passes is formed in the center portion, and a circumferential side plate extending downward from the circumferential end of the lid body portion.
  • the stopper 7 includes a pair of substantially plate-like sandwiching bodies 71, 71 in which the inner side sandwiching the rod 11 from both sides is cut out in a semicircular shape, and the pair of sandwiching bodies 71, 71 are connected to the rod 11. It consists of a bolt 72 and a nut 73 that are firmly fixed to the bolt.
  • the stopper 7 is fixed to the rod 11 and rotates in conjunction with the rotation of the rod 11.
  • the lid member 41 does not rotate because the casing 2 does not rotate even if the rod 11 rotates. For this reason, the lid member 41 and the stopper 7 are in sliding contact.
  • a bearing or the like may be interposed.
  • FIG. 13 the same components as those in FIGS. 1 to 6 are denoted by the same reference numerals, description thereof is omitted, and differences will mainly be described. That is, the underground entraining device 10a in FIG. 13 is different from the underground entraining device 10 in FIGS. 1 to 6 in that the protrusion shape of the rod, the lower shape of the casing, the stopper member for holding the upper end of the casing, The presence or absence of anti-blur material.
  • the stirring blade 13 is schematically depicted.
  • the intrusion convex portion 12a has an inverted semi-conical shape, so that the side surface 233 is an inclined surface that faces obliquely downward, and this inclined surface 233 is engaged with the inclined surface 232 of the projection 23a of the casing 2a. Will do.
  • the lower end surface 24a of the casing 2a is inclined so that it faces obliquely downward on the outer side. With this, the stirring blade 13 can further increase the opening angle of the blade so as to have a V shape, and excavation. You can increase your power.
  • the end surface of the protrusion 23a is an inclined surface 232 that faces obliquely upward and engages with the penetrating protrusion 12a.
  • wing 26 provided with the inclined surface 261 which faces diagonally outward downward is formed in the outer periphery of the casing 2a.
  • wing 26 is not limited to what is formed in the outer periphery of the casing 2 in one turn, You may be discontinuous and may be partially formed in the same surface or a different surface.
  • the rod 11 is provided with a stop member 4a for positioning the upper end of the casing 2a.
  • the stop member 4a includes a disc-shaped main body portion 41 having a rod hole through which the rod 11 passes in the center, a side plate portion 42 extending downward from the end portion, and an upper cylindrical portion 44 standing upward from the edge of the rod hole. It is.
  • the inner diameter of the stop member 4a is substantially the same as the outer diameter of the casing 2a.
  • the locking member 4a locks the protruding protrusion 12a of the rod 11 and the protrusion 23 of the casing 2a, and then places the upper cylindrical portion 44 on the rod 11 with a fixing member such as a bolt 43. To be installed.
  • the anti-blur material 5 is inserted through the rod 11 into the casing 2a. That is, the anti-blur material 5 has a rod hole 53 having an inner diameter substantially the same as the outer diameter of the rod 11 in the center, a disc-shaped main body 51 having an outer diameter substantially the same as the inner diameter of the casing 2a, The side plate portion 52 extends downward from the end portion of the plate-like main body portion 51.
  • the anti-blur material 5 is preferably fitted to the rod 11 strongly. If the fitting is loose, the anti-shake material 5 falls downward, and a sufficient anti-shake effect cannot be obtained.
  • both the stop member 4 and the anti-blur material 5 are pulled up together with the rod 11.
  • the stopper member 4 is not limited to the outer lid type shown in FIG. 13, and may be, for example, an inner lid type stopper as shown in FIG. That is, the stop member 4b in FIG. 14 has a disc-shaped main body 41a having a rod hole through which the rod 11 passes in the center and an outer diameter substantially the same as the outer diameter of the casing 2a, and an outer diameter substantially the same as the inner diameter of the casing 2a.
  • the lower cylindrical portion 42a and the upper cylindrical portion 44 standing upward from the edge of the rod hole.
  • the stop member 4b like the stop member 4, locks the penetrating convex portion 12 of the rod 11 and the projection 23 of the casing 2a, and then places the upper cylindrical portion 44 on the rod 11 by bolting the upper cylindrical portion 44 to the rod 11. It is installed by being pinched by fixing members such as 43.
  • the underground entrainment apparatus 10b in FIG. 15 is mainly different from the underground entraining apparatus 10a in FIG. 13 in the presence or absence of an angle adjusting ring member.
  • the underground entrainment device 10 b includes the ring member 6 that adjusts the opening angle of the stirring blade 13 between the casing 2 a and the stirring blade 13.
  • the ring member 6 is a ring-shaped object having a predetermined thickness and a predetermined inner diameter.
  • the opening angle of the stirring blade 13 can be adjusted by the thickness (height) of the ring member 6 and the inner diameter. That is, as shown in FIG. 17, if the thickness (height) of the ring member 6 is increased (ring member 61a), the opening angle of the stirring blade 13 is reduced, and conversely, the thickness (height) of the ring member 6 is decreased. If it is small, the opening angle of the stirring blade 13 becomes large. Further, if the inner diameter of the ring member 6 is reduced, the opening angle of the stirring blade 13 is decreased. Conversely, if the inner diameter of the ring member 6 is increased, the opening angle of the stirring blade 13 is increased.
  • the ring member 6 After being taken into the ground, the ring member 6 remains buried under the casing 2. Since the opening angle of the stirring blade 13 can be adjusted, the stirring blade diameter corresponding to the outer diameter of the casing receiver can be set. In addition, the stirring blade 13 is appropriately determined in consideration of various conditions such as soil quality and ground N value.
  • a ring-shaped wing member 6b may be installed instead of the ring member 6 (FIG. 18).
  • the cone portion at the tip of the rod 11 is a drilling blade.
  • the ring-shaped blade member 6b has a ring shape similar to that of the ring member 6, and has a blade 62b having an inclined surface opposite to the drilling blade on the outer peripheral surface.
  • the blade 62b having an inclination opposite to the excavating blade pushes the soil pushed upward upward and compresses the side wall ground toward the side to increase the strength. Prevent collapse and correct the poor pull-in of the rod 11.
  • the number of blades 62b that are reversely inclined to the excavation blades is not limited to two in this example, and may be four.
  • the ring-shaped blade member 6b can also adjust the opening angle of the stirring blade 13.
  • the angle of the stirring blade 13 similar to that of the ring member 6 is adjusted without the ring member 6 by adjusting the vertical length (skirt length) of the lower cylindrical portion 24. be able to. That is, if the length (height) extending downward of the lower cylindrical portion 24 is increased, the opening angle of the stirring blade 13 is decreased, and the length (height) extending downward of the lower cylindrical portion 24 is decreased. In this case, the opening angle of the stirring blade 13 becomes large.
  • the casing underground entrainment method uses the casing underground entrainment apparatus 10 to 10b, expands the stirring blade, rotates the underground penetration rod, and penetrates to the target depth while excavating the ground, and the underground The II step of lifting the penetrating rod, folding the stirring blade, pulling the underground penetrating device to the ground, and leaving the casing in the ground is performed.
  • an underground entrainment method using the underground entrainment apparatus 10 will be described below.
  • the underground entrainment device 10 is used by assembling the underground penetration device 1 and the casing 2.
  • the stirring blade 13 is folded in a state where the rod 11 is erected.
  • the casing 2 is inserted into the standing underground penetrating device 1 from the upper side to the lower side through the rod 11 until the locking surface 231 of the projection 23 and the lower peripheral surface 121 of the penetrating convex portion 12 come into contact with each other.
  • the lid member 41 is put on the upper end of the casing 2 to fix the stopper 7 to the upper rod 11a.
  • the rod 11 is pushed to the ground center at the buried position, and for example, a vibro drill (VD) type boring device is driven. Thereby, the rod 11 rotates, the cone part 14 at the tip bites into the ground, and enters the ground.
  • the stirring blade 13 may be opened a little in advance or may have a desired opening. Even if the stirring blade 13 is in a slightly opened state, it can be opened upon receiving ground resistance when entering the ground, hitting the protrusion 141, and opened at the blade angle shown in FIG. An excavation diameter larger than the outer diameter of the casing 2 embedded in the opened stirring blade 13 is constructed.
  • the forward rotation of the rod 1 is preferably such that the back of the stirring blade 13 (the surface on the side opposite the rod) faces the stirring direction because the shaft support portion of the stirring blade 13 is not clogged with sand.
  • the stirring blade 13 precedes and stirs the ground, so that the ground is loosened in the stirring area.
  • the stirring blade 13 and the casing 2 are not locked, and the penetration convex portion 12 and the projection 23 of the casing 2 are locked (contacted), and the stirring blade 13 and the casing 2 are Is not locked, and the casing 2 is taken to the ground without rotation (FIG. 7).
  • the bottom surface of the casing 2 is closed without any gap between the protruding convex portion 12 and the protrusion 23, and there is no room for the soil to enter the casing 2 when the rod 11 penetrates.
  • the rotation and penetration of the rod 11 may be stopped, the rod 11 or the casing 2 may be added, and the rod 11 may be rotated and penetrate again.
  • a casing that does not form the projections 23 on the inner wall is used.
  • the rotation and penetration of the rod 11 are stopped.
  • the extraction process of the underground penetration device 1 is performed.
  • the upper end of the casing 2 may protrude slightly from the ground surface. Thereby, the operativity from the ground surface with respect to the casing 2 increases.
  • step II first, the underground penetration device 1 is pulled up. At this time, since the open stirring blade 13 hits the lower end 29 of the casing 2, the stirring blade 13 is folded. Further, the outer diameter (d) of the penetrating protrusion 12 is smaller than the inner diameter (l 2 ) of the casing 2, the blade diameter (w 2 ) of the folded stirring blade and the outer diameter of the lower rod 11 b are Since it is smaller than the hole diameter (m 1 ) of the through hole 25 of the casing 2, the underground penetrating device 1 can be pulled out to the ground while the casing 2 is buried in the ground (see FIG. 9). The lid member 41 is pulled out together with the rod 11 to the ground while the stopper 7 is fixed to the rod 11 and is placed on the penetrating protrusion 12.
  • the casing 2 since the center position of the casing 2 is determined by the stop member 4 and is entrained in the ground, the casing 2 is not misaligned and the rod pull-out rail hole is not blocked. Since the contact between the penetrating protrusion 12 and the protrusion 23 of the casing 2 contacts while sliding on a ring-shaped plane, the casing 2 and the lid member 41 do not rotate. Further, the inverted half-cone portion 24 below the casing 2 suppresses the generation of soil removal, and the tip portion 29 functions as a member that closes the stirring blade 13 when the rod 11 is pulled up. Moreover, since the stirring blade 13 has a unique rotating shaft, a strong and stable stirring is possible. It is the casing 2 that is left behind in the ground, and the underground penetrating device 1 and the stop member 4 are recovered on the ground. The underground penetration device 1 and the stop member 4 can be reused by a new underground entrainment method.
  • the casing underground entrainment method in the first embodiment is performed.
  • the water stop cap 3 is detachably attached to the rod tip, and the casing 2 is inserted into the through hole 25.
  • the III step of loading the water stop cap 3 is performed (see FIG. 11).
  • the rod having the water stop cap 3 detachably attached to the rod tip is inserted downward from the opening at the upper end of the casing 2.
  • the water stop cap 3 can be reliably mounted
  • the rod 11 in the step III is not limited to the rod used in the steps I and II, and other rods (dedicated rods for mounting a water stop cap) may be used.
  • the water stop cap 3 used in this example has an inverted half-cone shape, and has an upper end diameter larger than the through hole 25 and a lower end diameter smaller than the through hole 25. With such a shape, the water stop cap 3 can be loaded from above the through hole 25 and the through hole 25 can be closed.
  • the upper rod 11a is reversely rotated to remove the joint screw 112, and the upper rod 11a and the lower rod 11b are
  • the IIA process which isolate
  • the lower opening 25 of the casing 2 can be obstruct
  • the casing 2 buried in the ground has a hollow inside and is used for geothermal use, rainwater use or groundwater use.
  • geothermal heat changes little during the day and night throughout the year, it can be used directly for a geothermal heat pump or the like, and equipment such as a geothermal heat pump can be used in a casing.
  • the casing can be used as a temporary disaster prevention well after a huge earthquake by drawing groundwater or rainwater into the casing.
  • a casing with slits and through holes formed in the peripheral surface is buried in the ground in advance to eliminate excess pore water pressure during liquefaction. It can be used as a drain material that induces upward pressure increase.
  • the underground entrainment method using the underground entrainment device 10a of FIGS. 10 and 11 will be mainly described in terms of differences from the underground entrainment method using the underground entrainment device 10 of FIGS.
  • the anti-blur material 5 is installed, it is possible to prevent the lateral blur during entrainment of the casing 2a.
  • the action of the ring-shaped wing member 62b pushes down the soil that is pushed upward during excavation and compresses the side wall ground toward the side to increase strength and prevent collapse.
  • the stirring blade 13 can be set to a desired blade angle by the action of the blade angle adjusting ring 6. Also, the action of the ring-shaped wing member 6b pushes down the soil pushed upward during excavation and compresses the side wall ground toward the side to increase strength and prevent collapse.
  • a small-diameter casing that can be used for geothermal use or the like is excavated at the same time as excavation without the soil substantially entering the casing. Can be taken with you. Thereby, a construction period can be shortened. Moreover, a casing can be penetrated with a well-known vibro drill (VD) type boring apparatus, and a big penetration apparatus becomes unnecessary. In addition, since there is no generation of excavated soil, it is environmentally friendly.
  • VD vibro drill

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un dispositif d'insertion dans le sol destiné à un tubage (10) et comprenant: un dispositif (1) de pénétration dans le sol caractérisé en ce qu'une lame tournante (13) de brassage est fixée aux deux côtés d'une tige (11) et en ce qu'une protubérance (12) de pénétration intégrée avec la tige (11) est fixée au sommet de la lame (13) de brassage; et un tubage (2) caractérisé en ce qu'une saillie (22) qui interagit avec la protubérance (12) de pénétration dotée d'un trou débouchant en son centre est formée dans une face de paroi intérieure basse du tubage (2); le dispositif (1) de pénétration dans le sol étant retiré et récupéré en laissant le tubage (2) dans le sol. Selon la présente invention, simultanément à l'excavation, un dispositif d'insertion d'un tubage dans le sol capable d'insérer un tubage destiné à une utilisation géothermique ou similaire, ainsi qu'un procédé d'insertion d'un tubage dans le sol l'utilisant, peuvent être définis.
PCT/JP2013/077248 2013-10-07 2013-10-07 Dispositif d'insertion d'un tubage dans le sol et procédé d'insertion d'un tubage dans le sol l'utilisant WO2015052752A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2015541316A JPWO2015052752A1 (ja) 2013-10-07 2013-10-07 ケーシング地中連行装置及びこれを用いたケーシング地中連行方法
PCT/JP2013/077248 WO2015052752A1 (fr) 2013-10-07 2013-10-07 Dispositif d'insertion d'un tubage dans le sol et procédé d'insertion d'un tubage dans le sol l'utilisant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/077248 WO2015052752A1 (fr) 2013-10-07 2013-10-07 Dispositif d'insertion d'un tubage dans le sol et procédé d'insertion d'un tubage dans le sol l'utilisant

Publications (1)

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