EP3199709A1 - Apparatus and method for drilling annular cavities - Google Patents
Apparatus and method for drilling annular cavities Download PDFInfo
- Publication number
- EP3199709A1 EP3199709A1 EP16153711.3A EP16153711A EP3199709A1 EP 3199709 A1 EP3199709 A1 EP 3199709A1 EP 16153711 A EP16153711 A EP 16153711A EP 3199709 A1 EP3199709 A1 EP 3199709A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- body member
- drilling assembly
- annular
- pile
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims description 16
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 9
- 230000032258 transport Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
Definitions
- the present invention relates to an apparatus and a method for drilling annular cavities and relates particularly, but not exclusively, to an apparatus and method for drilling annular cavities for the location of piles and construction of retaining walls.
- EP2813623A1 discloses an anchor device adapted to form an annular cavity and locate an anchor device therein. While a body member of the anchor device may be separated from the device and recovered after a drilling operation, the cutting members cannot be recovered and are consequently left behind in the annular cavity after the drilling process has been completed. Separate cutting members are therefore needed for each annular cavity formed, which leads to excessive costs.
- Preferred embodiments of the present invention seek to overcome one or more of the disadvantages of the prior art.
- a drilling assembly having a plurality of said cutting members moveable relative to said first body member between a first condition, in which rotation in a first direction of the first body member causes the cutting members to form an annular cavity defining a second radially outer surface spaced from said first radially outer surface and a second radially inner surface spaced from said first radially inner surface, and a second condition, in which said first body member, with said cutting members mounted thereto, can be removed from said cavity while leaving said second body member in said cavity, the advantage is provided that the first body member and cutting members mounted to it may be retrieved after each drilling operation, thereby allowing the first body member and cutting portions to be reused and therefore reducing installation costs.
- This provides the advantage of a simple mechanism for transferring the cutting member from the first condition to the second condition, thereby making the drilling assembly simpler to operate.
- the drilling assembly may further comprise at least one abutment member adapted to abut at least one cutting member in at least one of said first and second conditions.
- This provides the advantage of maintaining at least one cutting member in a desired condition by means of a simple construction.
- the drilling assembly may further comprise at least one connecting device mounted adjacent an outer surface of said second body member, said at least one connecting device being adapted to connect said second body member to at least one sheet pile.
- At least one said connection device may comprise at least one male or female connector extending on said outer surface, wherein at least one said male or female connector is adapted to engage a respective female or male connector of a sheet pile.
- the method may further comprise using a template to position said drilling assembly during formation of said cavities.
- This provides the advantage of ensuring the correct placement of at least one second body member.
- Figure 2 shows a bottom view of the cutters 16 in the first condition.
- the annular cavity defined by the second outer and inner surfaces 20, 22, and the first outer and inner surfaces 12, 14, is shown.
- Two connecting devices 24 are shown mounted on the outer pile 4, located on opposite sides of the outer pile 4, though it is possible to mount more than two such devices.
- the connecting devices 24 are shown as hook-shaped devices for connecting to similar respective devices (see Figure 11 ) mounted on one or more sheet piles.
- Channels in the form of grouting tubes 26 are shown mounted on the inner pile 6.
- the drilling assembly 2 is shown in a second condition, in which all twelve of the cutters 16 are oriented to extend to the second inner surface 22 of the annular cavity 18. In the second condition, none of the cutters 16 are oriented to extend to the second outer surface 20 of the cavity 18, nor do any of the cutters 16 extend outwardly as far as an inner surface 28 of the outer pile 4. Abutment members 30 are shown abutting a number of cutters 16 in the second condition. The abutment members 30 are also shown in Figure 1 , abutting a number of cutters 16 in the first condition.
- the drilling assembly 2 is used to cut an annular cavity 18 in the ground, locate the outer pile 4, and have the inner pile 6 and cutters 16 removed after drilling for reuse.
- the cutters 16 are oriented in the first condition ( Figures 1 and 2 ), and the inner pile 6 is driven by external means (not shown) in the first direction to cut the annular cavity 18.
- the cutters 16 may also be driven to rotate about each of their axes for cutting the cavity 18.
- the cutters 16 are oriented to cut the annular cavity which is defined by the second outer surface 20 and second inner surface 22, where the second outer surface 20 has a larger radius than the first outer surface 12 of the outer pile 4 and where the second inner surface 20 has a smaller radius than the first inner surface 14 of the inner pile 6.
- the drilling assembly 200 is used to cut an annular cavity 1800 in the ground, locate the inner pile 600, and have the outer pile 400 and cutters 1600 removed after drilling for reuse.
- the cutters 1600 are oriented in the first condition ( Figures 6 and 7 ), and the outer pile 400 is driven by external means (not shown) in the first direction to cut the annular cavity 1800.
- the cutters 1600 may also be driven to rotate about each of their axes for cutting the cavity 1800.
- the cutters 1600 are oriented to cut the annular cavity which is defined by the second outer surface 2000 and second inner surface 2200, where the second outer surface 2000 has a larger radius than the first outer surface 1200 of the outer pile 400 and where the second inner surface 2000 has a smaller radius than the first inner surface 1400 of the inner pile 600.
- the inner pile 600 can be rotated about its longitudinal axis in order to orient the connecting devices 2800 as required for subsequent attachment of one or more sheet piles.
- a number of piles 600 may be located in proximity to one another, in a corresponding number of annular cavities 1800, and have sheet piles located between them to form a retaining wall or cofferdam-type structure.
- a template may be used to position the drilling assembly during formation of a cavity.
- the template is used to position the drilling assembly relative to an existing cavity.
- the distance between the two cavities can therefore be chosen to correspond to a desired width of sheet pile to be located between the two piles located in those cavities.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
- The present invention relates to an apparatus and a method for drilling annular cavities and relates particularly, but not exclusively, to an apparatus and method for drilling annular cavities for the location of piles and construction of retaining walls.
- It is known to provide anchor devices in the form of cylindrical piles which are driven into the ground by means of hammering or augering, and to anchor a structure to the ground by means of bonding of the external surfaces of the piles with the ground. This arrangement suffers from the drawback that excessive amounts of energy are consumed in removing a large volume of material when forming a cylindrical cavity for receiving the pile.
-
EP2813623A1 discloses an anchor device adapted to form an annular cavity and locate an anchor device therein. While a body member of the anchor device may be separated from the device and recovered after a drilling operation, the cutting members cannot be recovered and are consequently left behind in the annular cavity after the drilling process has been completed. Separate cutting members are therefore needed for each annular cavity formed, which leads to excessive costs. - Preferred embodiments of the present invention seek to overcome one or more of the disadvantages of the prior art.
- According to a first aspect of the present invention, there is provided a drilling assembly for forming an annular cavity in a substrate, the drilling assembly comprising: a first body member including a first substantially annular part; a second body member including a second substantially annular part; and a plurality of cutting members mounted adjacent an end of said first body member; wherein at least part of one of said first and second substantially annular parts is adapted to be located inside the other of said first and second substantially annular parts such that one of said first and second annular parts defines a first radially outer surface, and the other of said first and second substantially annular parts defines a first radially inner surface, and wherein a plurality of said cutting members are moveable relative to said first body member between a first condition, in which rotation in a first direction of the first body member causes the cutting members to form an annular cavity in the substrate, the annular cavity defining a second radially outer surface spaced from said first radially outer surface and a second radially inner surface spaced from said first radially inner surface, and a second condition, in which said first body member, with said cutting members mounted thereto, can be removed from said cavity while leaving said second body member in said cavity.
- By providing a drilling assembly having a plurality of said cutting members moveable relative to said first body member between a first condition, in which rotation in a first direction of the first body member causes the cutting members to form an annular cavity defining a second radially outer surface spaced from said first radially outer surface and a second radially inner surface spaced from said first radially inner surface, and a second condition, in which said first body member, with said cutting members mounted thereto, can be removed from said cavity while leaving said second body member in said cavity, the advantage is provided that the first body member and cutting members mounted to it may be retrieved after each drilling operation, thereby allowing the first body member and cutting portions to be reused and therefore reducing installation costs.
- At least one said cutting member may be adapted to pivot between said first condition and said second condition in response to rotation of said first body member in a second direction opposite said first direction.
- This provides the advantage of a simple mechanism for transferring the cutting member from the first condition to the second condition, thereby making the drilling assembly simpler to operate.
- The drilling assembly may further comprise at least one abutment member adapted to abut at least one cutting member in at least one of said first and second conditions.
- This provides the advantage of maintaining at least one cutting member in a desired condition by means of a simple construction.
- The drilling assembly may further comprise at least one connecting device mounted adjacent an outer surface of said second body member, said at least one connecting device being adapted to connect said second body member to at least one sheet pile.
- This provides the advantage of allowing sheet piles to be connected to the second member, thereby facilitating the construction of barrier walls and cofferdam-type structures with retaining properties.
- At least one said connection device may comprise at least one male or female connector extending on said outer surface, wherein at least one said male or female connector is adapted to engage a respective female or male connector of a sheet pile.
- This provides the advantage of allowing the sheet pile to be more easily mounted to the second body member in a desired location.
- The drilling assembly may further comprise at least one fluid delivery channel mounted to at least one of said first and second body members, wherein said at least one fluid delivery channel is adapted to transport bonding material into said annular cavity.
- This provides the advantage that bonding material, such as grout, may be transported into the annular cavity to form a more stable anchor.
- According to a second aspect of the present invention, there is provided a method of forming an annular cavity, the method comprising: forming an annular cavity by means of a drilling assembly as defined above; and removing said first body member, with said cutting members mounted thereto, from said cavity while leaving said second body member in said cavity.
- The method may further comprise the steps of: (i) forming two additional annular cavities; (ii) locating at least one sheet pile between at least one pair of said second body members left in said cavities; (iii) transporting bonding material into two of said cavities; (iv) repeating steps (i) to (iii) a desired number of times; and (v) transporting bonding material into a final cavity not containing any bonding material.
- This provides the advantage that sheet piles may be located in sequence while avoiding difficulty associated with hardened bonding material interfering with placement.
- The method may further comprise using a template to position said drilling assembly during formation of said cavities.
- This provides the advantage of ensuring the correct placement of at least one second body member.
- The method may further comprise the step of rotating at least one second body member remaining in a cavity into an orientation for engaging at least one sheet pile.
- This provides the advantage of increasing the ease with which a sheet pile may be located in a desired location.
- Preferred embodiments of the invention will now be described, by way of example only and not in any limitative sense, with reference to the accompanying drawings, in which:-
-
Figure 1 is a perspective bottom view of a drilling assembly of a first embodiment of the present invention in a first condition; -
Figure 2 is a bottom view of the drilling assembly ofFigure 1 ; -
Figure 3 is a perspective bottom view of the drilling assembly ofFigure 1 in a second condition; -
Figure 4 is a bottom view of the drilling assembly ofFigure 3 ; -
Figure 5 is a partially cutaway perspective view of a drilling assembly of a second embodiment of the present invention; -
Figure 6 is a perspective bottom view of the drilling assembly ofFigure 5 in a first condition; -
Figure 7 is a bottom view of the drilling assembly ofFigure 6 ; -
Figure 8 is a perspective bottom view of the drilling assembly ofFigure 5 in a second condition; -
Figure 9 is a partially cut-away bottom view of the drilling assembly ofFigure 8 ; -
Figure 10 is a schematic top view of a retaining wall constructed by means of a method embodying the present invention; and -
Figure 11 is a top view of part of the retaining wall ofFigure 10 . - Referring to
Figures 1 to 4 , adrilling assembly 2 is shown having a first body member in the form of an annular inner pile 6 and a second body member in the form of an annularouter pile 4, the body members having respective first substantially annular part 10 and second substantially annular part 8. The annularouter pile 4 has greater inner and outer radii than the annular inner pile 6. Theouter pile 4 defines a firstouter surface 12 of thedrilling assembly 2 and the inner pile 6 defines a first inner surface 14 of thedrilling assembly 2. A plurality of cutting members in the form of rotary cone-shaped cutters 16 are shown mounted to an end of the inner pile 6. -
Figures 1 and2 show thecutters 16 deployed in a first condition, in which thedrilling assembly 2 forms an annular cavity 18 by driving the inner pile 6 and thecutters 16 to rotate in a first direction. The drilling assembly may also drive thecutters 16 to rotate about their respective axes to cut the annular cavity 18. The annular cavity 18 is defined by a secondouter surface 20 and a second inner surface 22. In the first condition, thecutters 16 are alternately arranged such that six of the twelvecutters 16 are oriented to extend beyond the firstouter surface 12 of the outer pile to the secondouter surface 20 of the annular cavity 18, and the other six cutters are oriented to extend beneath the first inner surface 14 of the inner pile 6 to the second inner surface 22 of the annular cavity 18. In doing so, a sufficient distance is provided between both the first and second inner surfaces 14, 22 and the first and secondouter surfaces outer pile 4 and the inner pile 6 to proceed unimpeded into the cavity 18. -
Figure 2 shows a bottom view of thecutters 16 in the first condition. In this figure, the annular cavity defined by the second outer andinner surfaces 20, 22, and the first outer andinner surfaces 12, 14, is shown. Two connectingdevices 24 are shown mounted on theouter pile 4, located on opposite sides of theouter pile 4, though it is possible to mount more than two such devices. In this embodiment, the connectingdevices 24 are shown as hook-shaped devices for connecting to similar respective devices (seeFigure 11 ) mounted on one or more sheet piles. Channels in the form ofgrouting tubes 26 are shown mounted on the inner pile 6. - Referring to
Figures 3 and4 , thedrilling assembly 2 is shown in a second condition, in which all twelve of thecutters 16 are oriented to extend to the second inner surface 22 of the annular cavity 18. In the second condition, none of thecutters 16 are oriented to extend to the secondouter surface 20 of the cavity 18, nor do any of thecutters 16 extend outwardly as far as aninner surface 28 of theouter pile 4. Abutment members 30 are shown abutting a number ofcutters 16 in the second condition. The abutment members 30 are also shown inFigure 1 , abutting a number ofcutters 16 in the first condition. - The
drilling assembly 2 is used to cut an annular cavity 18 in the ground, locate theouter pile 4, and have the inner pile 6 andcutters 16 removed after drilling for reuse. Thecutters 16 are oriented in the first condition (Figures 1 and2 ), and the inner pile 6 is driven by external means (not shown) in the first direction to cut the annular cavity 18. Thecutters 16 may also be driven to rotate about each of their axes for cutting the cavity 18. In the first condition, thecutters 16 are oriented to cut the annular cavity which is defined by the secondouter surface 20 and second inner surface 22, where the secondouter surface 20 has a larger radius than the firstouter surface 12 of theouter pile 4 and where the secondinner surface 20 has a smaller radius than the first inner surface 14 of the inner pile 6. This allows both theouter pile 4 and inner pile 6 to proceed unimpeded into the cavity 18 as the cavity is being formed by thecutters 16. Six of thecutters 16 are pivotable between the first condition and the second condition. In both conditions, each of the six pivotable cutters abuts a respective abutment member 30 adjacent thereto. The abutment members 30 thereby prevent pivoting of the pivotable cutters beyond angles of orientation defining the first and second conditions. - Once a desired cavity depth has been achieved, the inner pile 6 is rotated in a second direction, opposite to the first direction. Contact between the
cutters 16 and the base of the annular cavity causes thepivotable cutters 16 to pivot from the first condition, their cutting orientation, into the second condition (Figures 3 and4 ), in which thepivotable cutters 16 have an orientation matching the cutting orientation of the fixed cutters. The pivoting of the pivotable cutters is stopped by the abutment members 30, located adjacent the pivotable cutters, to maintain them in the second condition. - As a result of the pivotable cutters being in the second condition, in which none of the cutters extend outwardly as far as the
inner surface 28 of theouter pile 4, theouter pile 4 can be detached from thedrilling apparatus 2, and the inner pile 6, together with thecutters 16 mounted to it, can consequently be retracted and removed from the cavity 18 for reuse. - After removal of the inner pile 6, the
outer pile 4 can be rotated about its longitudinal axis in order to orient the connectingdevices 24 as required for subsequent attachment of one or more sheet piles. In this way, a number ofpiles 4 may be located in proximity to one another, in a corresponding number of annular cavities 18, and have sheet piles located between them to form a retaining wall or cofferdam-type structure. - The
grouting tubes 26 transport a bonding material into the cavity 18 before the inner pile 6, together with thecutters 16, has been removed. Alternatively, thegrouting tubes 26 may be mounted on theouter pile 4, and may transport the bonding material into the cavity 18 after the inner pile 6, together with thecutters 16, has been removed. - Referring to
Figures 5 to 9 , adrilling assembly 200 is shown having a first body member in the form of an annularouter pile 400 and a second body member in the form of an annularinner pile 600, the body members having respective first and second substantiallyannular parts 800, 1000. The annularouter pile 400 has greater inner and outer radii than the annularinner pile 600. Theouter pile 400 defines a firstouter surface 1200 of thedrilling assembly 200 and theinner pile 600 defines a firstinner surface 1400 of thedrilling assembly 200. A plurality of cutting members in the form of rotary cone-shapedcutters 1600 are shown mounted to an end of theouter pile 400. -
Figure 6 shows thecutters 1600 deployed in a first condition, in which thedrilling assembly 200 forms anannular cavity 1800 by driving theouter pile 400 and thecutters 1600 to rotate in a first direction. Theannular cavity 1800 is defined by a secondouter surface 2000 and a secondinner surface 2200. In the first condition, thecutters 1600 are alternately arranged such that four of the eightcutters 1600 are oriented to extend beyond the firstouter surface 1200 of the outer pile to the secondouter surface 2000 of theannular cavity 1800, and the other four cutters are oriented to extend beneath the firstinner surface 1400 of theinner pile 600 to the secondinner surface 2200 of theannular cavity 1800. In doing so, a sufficient distance is provided between both the first and secondinner surfaces outer surfaces outer pile 400 and theinner pile 600 to proceed unimpeded into thecavity 1800. -
Figure 7 shows a bottom view of thecutters 1600 in the first condition. In this figure, the annular cavity defined by the second outer andinner surfaces inner surfaces devices 2800 are shown mounted on theinner pile 600, located on opposite sides of theinner pile 600, though it is possible to mount more than two such devices. In this embodiment, the connectingdevices 2800 are shown as onemale device 2400 and one female device 2600 for connecting to respective female and male connecting devices (not shown) mounted on one or more sheet piles. A channel in the form of agrouting tube 3000 is shown mounted on theinner pile 600. - Referring to
Figures 8 and9 , thedrilling assembly 200 is shown in a second condition, in which all eight of thecutters 1600 are oriented to extend to thesecond outer.surface 2000 of theannular cavity 1800. In the second condition, none of thecutters 1600 are oriented to extend to the secondinner surface 2200 of thecavity 1800, nor do any of thecutters 1600 extend inwardly beyond a circumference having a radius defined by the outermost point of either thegrouting tube 3000 or at least one of the two connectingdevices 2800.Abutment members 3200 are shown abutting a number ofcutters 1600 in the second condition. Theabutment members 3200 are also shown inFigure 6 , abutting a number of cutters in the first condition. - The
drilling assembly 200 is used to cut anannular cavity 1800 in the ground, locate theinner pile 600, and have theouter pile 400 andcutters 1600 removed after drilling for reuse. Thecutters 1600 are oriented in the first condition (Figures 6 and7 ), and theouter pile 400 is driven by external means (not shown) in the first direction to cut theannular cavity 1800. Thecutters 1600 may also be driven to rotate about each of their axes for cutting thecavity 1800. In the first condition, thecutters 1600 are oriented to cut the annular cavity which is defined by the secondouter surface 2000 and secondinner surface 2200, where the secondouter surface 2000 has a larger radius than the firstouter surface 1200 of theouter pile 400 and where the secondinner surface 2000 has a smaller radius than the firstinner surface 1400 of theinner pile 600. This allows both theouter pile 400 andinner pile 600 to proceed unimpeded into thecavity 1800 as the cavity is being formed by thecutters 1600. Four of thecutters 1600 are pivotable between the first condition and the second condition. In both conditions, each of the four pivotable cutters abuts arespective abutment member 3200 adjacent thereto. Theabutment members 3200 thereby prevent pivoting of the pivotable cutters beyond angles of orientation defining the first and second conditions. - Once a desired cavity depth has been achieved, the
outer pile 400 is rotated in a second direction, opposite to the first direction. This causes the pivotable cutters to pivot from the first condition, their cutting orientation, into the second condition (Figures 8 and9 ) in which the pivotable cutters have an orientation matching the cutting orientation of the fixed cutters. The pivoting of the pivotable cutters is stopped by theabutment members 3200, located adjacent the pivotable cutters, to maintain them in the second condition. - As a result of the pivotable cutters being in the second condition, in which none of the cutters extend inwardly beyond the radius defined by the outermost point of either the
grouting tube 3000 or either of connectingdevices 2800, theinner pile 600 can be detached from thedrilling apparatus 200, and theouter pile 400, together with thecutters 1600 mounted to it, can consequently be retracted and removed from thecavity 1800 for reuse. - After removal of the
outer pile 400, theinner pile 600 can be rotated about its longitudinal axis in order to orient the connectingdevices 2800 as required for subsequent attachment of one or more sheet piles. In this way, a number ofpiles 600 may be located in proximity to one another, in a corresponding number ofannular cavities 1800, and have sheet piles located between them to form a retaining wall or cofferdam-type structure. - The
grouting tube 3000 transports a bonding material into thecavity 1800 after theouter pile 400, together with thecutters 1600, has been removed. Alternatively, thegrouting tube 3000 may be mounted on theouter pile 400, and may transport the bonding material into thecavity 1800 before theouter pile 400, together with thecutters 1600, has been removed. - Referring to
Figures 10 and11 , in order to construct a retaining wall structure, the following steps are followed: - 1a) three annular cavities (C1, C2, and C3) are formed having piles (P1, P2, and P3) located within them respectively;
- 1b) a sheet pile (S12) is located between the first two piles (P1 and P2);
- 1c) bonding material is transported into the first cavity (C1) ;
- 1d) a sheet pile (S23) is located between the second pile (P2) and the third pile (P3);
- 1e) bonding material is transported into the second cavity (C2)
- 2a) two additional annular cavities (C4 and C5) are formed having additional piles (P4 and P5) located within them respectively;
- 2b) a sheet pile (S34) is located between the first pile in the sequence in an ungrouted cavity (P3, C3) and the subsequent pile (P4);
- 2c) bonding material is transported into the first ungrouted cavity (C3);
- 2d) a sheet pile (S45) is located between the two piles of step 2a (P4 and P5);
- 2e) bonding material is transported into the first cavity of step 2a (C4) ;
- 2f) steps 2a to 2e are repeated as required;
- 3a) a final annular cavity (CN) is formed having a final pile (PN) located within it;
- 3b) a final sheet pile (SN) is located between the final pile (PN) and the previous pile (P5); and
- 3c) bonding material is transported into the previous cavity (C5) and the final cavity.
- In between any two of the above steps, any piles (P1 - PN) located in ungrouted cavities may be rotated to align connecting devices mounted to those piles as required for the attachment of sheet piles to those piles.
- A template may be used to position the drilling assembly during formation of a cavity. In a preferred embodiment, the template is used to position the drilling assembly relative to an existing cavity. The distance between the two cavities can therefore be chosen to correspond to a desired width of sheet pile to be located between the two piles located in those cavities.
-
Figure 11 shows the arrangement of piles P1, P2 and sheet pile S12 upon completion of step 1b, described above. - It will be appreciated by persons skilled in the art that the above embodiments have been described by way of example only and not in any limitative sense, and that various alterations and modifications are possible without departure from the scope of the invention as defined by the claims. For example, that either of the inner and outer piles may or may not rotate during the drilling procedure according to the configuration of external driving apparatus.
Claims (10)
- A drilling assembly for forming an annular cavity in a substrate, the drilling assembly comprising:-
a first body member including a first substantially annular part;
a second body member including a second substantially annular part; and
a plurality of cutting members mounted adjacent an end of said first body member;
wherein at least part of one of said first and second substantially annular parts is adapted to be located inside the other of said first and second substantially annular parts such that one of said first and second annular parts defines a first radially outer surface, and the other of said first and second substantially annular parts defines a first radially inner surface, and
wherein a plurality of said cutting members are moveable relative to said first body member between a first condition, in which rotation in a first direction of the first body member causes the cutting members to form an annular cavity in the substrate, the annular cavity defining a second radially outer surface spaced from said first radially outer surface and a second radially inner surface spaced from said first radially inner surface, and a second condition, in which said first body member, with said cutting members mounted thereto, can be removed from said cavity while leaving said second body member in said cavity. - A drilling assembly according to claim 1, wherein at least one said cutting member is adapted to pivot between said first condition and said second condition in response to rotation of said first body member in a second direction opposite said first direction.
- A drilling assembly according to any one of the preceding claims, further comprising at least one abutment member adapted to abut at least one cutting member in at least one of said first and second conditions.
- A drilling assembly according to any one of the preceding claims, further comprising at least one connecting device mounted adjacent an outer surface of said second body member, said at least one connecting device being adapted to connect said second body member to at least one sheet pile.
- A drilling assembly according to claim 4, wherein at least one said connection device comprises at least one male or female connector extending on said outer surface, wherein at least one said male or female connector is adapted to engage a respective female or male connector of a sheet pile.
- A drilling assembly according to any one of the preceding claims, further comprising at least one fluid delivery channel mounted to at least one of said first and second body members, wherein said at least one fluid delivery channel is adapted to transport bonding material into said annular cavity.
- A method of forming an annular cavity, the method comprising:-
forming an annular cavity by means of a drilling assembly according to any one of the preceding claims; and
removing said first body member, with said cutting members mounted thereto, from said cavity while leaving said second body member in said cavity. - A method according to claim 7, further comprising the steps of:(i) forming two additional annular cavities;(ii) locating at least one sheet pile between at least one pair of said second body members left in said cavities;(iii) transporting bonding material into two of said cavities;(iv) repeating steps (i) to (iii) a desired number of times; and(v) transporting bonding material into a final cavity not containing any bonding material.
- A method according to claim 7 or 8, further comprising using a template to position said drilling assembly during formation of said cavities.
- A method according to any one of claims 7 to 9, further comprising the step of rotating at least one second body member remaining in a cavity into an orientation for engaging at least one sheet pile.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16153711.3A EP3199709B1 (en) | 2016-02-01 | 2016-02-01 | Apparatus and method for drilling annular cavities |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16153711.3A EP3199709B1 (en) | 2016-02-01 | 2016-02-01 | Apparatus and method for drilling annular cavities |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3199709A1 true EP3199709A1 (en) | 2017-08-02 |
EP3199709B1 EP3199709B1 (en) | 2019-08-07 |
Family
ID=55275015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16153711.3A Active EP3199709B1 (en) | 2016-02-01 | 2016-02-01 | Apparatus and method for drilling annular cavities |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP3199709B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020201719A1 (en) | 2019-04-05 | 2020-10-08 | Raptor Anchoring Limited | A fixation device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0368838A1 (en) * | 1988-11-03 | 1990-05-16 | Gerhard Dr.-Ing. Sauer | Device for the consolidation of geological formations having no or only little stability |
DE4432472A1 (en) * | 1994-09-13 | 1996-03-14 | Reburg Patentverwertungs Gmbh | Method of setting a rock bolt and adapter part for use in such a method |
EP2813623A1 (en) | 2013-06-11 | 2014-12-17 | Blade Offshore Services Ltd. | Anchor device and drilling assembly incorporating such anchor member |
-
2016
- 2016-02-01 EP EP16153711.3A patent/EP3199709B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0368838A1 (en) * | 1988-11-03 | 1990-05-16 | Gerhard Dr.-Ing. Sauer | Device for the consolidation of geological formations having no or only little stability |
DE4432472A1 (en) * | 1994-09-13 | 1996-03-14 | Reburg Patentverwertungs Gmbh | Method of setting a rock bolt and adapter part for use in such a method |
EP2813623A1 (en) | 2013-06-11 | 2014-12-17 | Blade Offshore Services Ltd. | Anchor device and drilling assembly incorporating such anchor member |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020201719A1 (en) | 2019-04-05 | 2020-10-08 | Raptor Anchoring Limited | A fixation device |
Also Published As
Publication number | Publication date |
---|---|
EP3199709B1 (en) | 2019-08-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20190249387A1 (en) | Steel pipe coupling device for steel pipes | |
EP3199709B1 (en) | Apparatus and method for drilling annular cavities | |
KR101961701B1 (en) | Withdrawable drilling bit | |
KR101808960B1 (en) | Sheet pile construction apparatus using multi-axled auger screw | |
JP2000290994A (en) | Method for drilling columnar continuous hole and inner casing | |
JP2018193707A (en) | Drilling machine and drilling method for driving underground heat exchange pipe | |
JP6854939B2 (en) | Pile body joint, pile body connection structure and pile body connection method | |
KR102489555B1 (en) | Connection structure of helical pile and extension pile and construction method using the same | |
CN215292360U (en) | Rectangular pile hole forming drill bit | |
JPH11350473A (en) | Execution method for steel pipe pile | |
JP7224038B2 (en) | Equipment for removing existing piles | |
JP4859555B2 (en) | Drilling rig | |
JP2006336241A (en) | Pile construction method and pile construction system | |
JP2009030365A (en) | Connection pipe for pushing into ground | |
JPH04221118A (en) | Drawing method for core material of concrete pole and cutting casing used for the method | |
JP6684432B1 (en) | Excavation area dividing device and method for dividing and removing underground buried objects in narrow land | |
JP4312135B2 (en) | Steel pipe sheet pile placing method | |
JP2001049662A (en) | Ruler for determining inner-casing normal | |
JPH05321253A (en) | Boring device | |
EP3973107A1 (en) | Displacement pile and pile driver adapter | |
KR101729381B1 (en) | Directional Control Excavating and Grouting Method Using Ring-Shaped Beam | |
JP3493114B2 (en) | Underground diaphragm wall method | |
JP2004360404A (en) | Plier for driving underground pile | |
JP3470766B2 (en) | Ground drilling rig | |
JPH09158181A (en) | Excavation and sheathing, and sheathing pile |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20180123 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20180530 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20190418 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 1164085 Country of ref document: AT Kind code of ref document: T Effective date: 20190815 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602016017931 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20190807 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191107 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191107 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191209 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1164085 Country of ref document: AT Kind code of ref document: T Effective date: 20190807 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191207 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191108 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200224 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602016017931 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG2D | Information on lapse in contracting state deleted |
Ref country code: IS |
|
26N | No opposition filed |
Effective date: 20200603 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20200229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200229 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190807 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230223 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20240206 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240226 Year of fee payment: 9 Ref country code: GB Payment date: 20240226 Year of fee payment: 9 |