SK283483B6 - Process and device for simultaneously drilling and lining hole - Google Patents

Process and device for simultaneously drilling and lining hole Download PDF

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Publication number
SK283483B6
SK283483B6 SK593-99A SK59399A SK283483B6 SK 283483 B6 SK283483 B6 SK 283483B6 SK 59399 A SK59399 A SK 59399A SK 283483 B6 SK283483 B6 SK 283483B6
Authority
SK
Slovakia
Prior art keywords
drill bit
coating tube
coating
drilling
tube
Prior art date
Application number
SK593-99A
Other languages
Slovak (sk)
Other versions
SK59399A3 (en
Inventor
Josef Mocivnik
Karl Böhm
Original Assignee
Techmo Entwicklungs-Und Vertriebs Gmbh
"Alwag" Tunnelausbau Gessellschaft M.B.H.
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
Priority to AT197896A priority Critical patent/AT407895B/en
Priority to AT106597A priority patent/AT408472B/en
Application filed by Techmo Entwicklungs-Und Vertriebs Gmbh, "Alwag" Tunnelausbau Gessellschaft M.B.H. filed Critical Techmo Entwicklungs-Und Vertriebs Gmbh
Priority to PCT/AT1997/000247 priority patent/WO1998021439A1/en
Publication of SK59399A3 publication Critical patent/SK59399A3/en
Publication of SK283483B6 publication Critical patent/SK283483B6/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/76Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/80Ground anchors
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/36Percussion drill bits
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/64Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/20Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/003Machines for drilling anchor holes and setting anchor bolts
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0033Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube

Abstract

In a process for drilling, in particular rotary percussion or percussion drilling, and lining holes in the ground or rocks, a hole (13) is percussion and/or rotation drilled by a cutter (1, 2, 3) mounted on boring rods (9) and a lining is formed by a jacket tube (5). During drilling, at least one jacket tube (5, 5') coupled to the cutter (1, 2) is drawn in the axial direction by the cutter (1, 2, 3) into the bore hole (13) and once drilling is finished, the cutter (3) is at least partially removed from the jacket tube (5, 5') together with the boring rods (9). In a device for drilling, in particular percussion or rotary percussion drilling, and lining holes in the ground or rocks, a cutter (1, 2, 3) mounted on boring rods (9) drills a bore hole by percussion and/or rotary drilling. The cutter (1, 2, 3) is divided in the radial direction. At least one jacket tube (5, 5') which surrounds the boring rods (9) is located at the end of the cutter (3) away from the drilling surface, around the outer circumference of the cutter (3), and is form-fittingly joined to the cutter (1) by at least one coupling element (6) so as to be drawn in the longitudinal direction of the bore hole (13).

Description

Technical field

The invention relates to a method of drilling, in particular impact drilling or rotational impact drilling and lining of openings in soil or rock, in which a boiling crown mounted on the drill rod by an impact and / or rotational movement forms a drill hole and a lining forms a coating. Furthermore, the invention relates to a drilling device, in particular for impact drilling or rotary drilling and lining of holes in soil or rock, the drill bit mounted on the drill rod forming the drill hole by impact and / or rotary movement.

BACKGROUND OF THE INVENTION

Such methods and devices for drilling, in particular for impact and impact-rotary drilling and subsequent lining of holes in the soil or rock material, are known in various embodiments. In this case, a bore that reaches a long length can be produced by means of a boiling crown which is mounted on the drill rod, whereby a borehole is created by impact and / or rotational movement. In the case of rotary-impact drilling, the drill bit is usually rotated by a certain angle each time the impact of the boiling crown is impacted and again loaded by means of the impact tool. By alternating rotation and intermittent impacts on the drill bit, the material is ground and broken up in front of the boiling bit. For example, in order to prevent the material from breaking into the drilled long hole and / or to provide a substantially smooth and even lining after the drilling has been made, it has been proposed, for example, to use a solid coating tube. Such a coating tube then constitutes a part of the drilling or embossing device by which the impact movement on the drill bit is generated. It is clear that such a coating tube must be sufficiently massive and thick-walled to carry the necessary high impact forces, which implies that a correspondingly enlarged cross-section must be drilled to take into account the wall thickness of the coating tube. However, especially in hard rock, drilling such a cross-section, increased by the wall thickness of the coating tube, requires more time and at the same time requires a larger and more robust drill bit.

Instead of using a shock-absorbing coating tube, methods are known in which, after time-consuming multiple work steps, the drill bit is removed from the borehole after completion of the borehole and immediately thereafter a lining or coating tube is inserted into the borehole. Obviously, such a procedure is only applicable in cases where crumbling and material breakage into the finished borehole can be safely excluded. In addition, naturally, an enlarged cross-section must be drilled to allow additional placement of the lining or coating tube. In order to accommodate such a long length lining or coating tube, the tube must again have a relatively large wall thickness. Therefore, a relatively large diameter drill bit adapted to the dimensions of the coating tube must also be used in this case.

After placing the liner or coating tube, for example, an anchor can be placed in the coating tube and, additionally or alternatively, can also be conveyed to rapidly solidify the surrounding material. Alternatively, such a lining may serve to accommodate the conduit or the like. If perforations are formed in the lining, the opening with such lining can be used for draining liquids and thus for drainage.

It is therefore an object of the present invention to improve the known method of drilling, in particular impact or rotational impact drilling and lining of holes in soil or rock materials, so that at least one coating tube can be inserted into the drill hole quickly and easily, substantially simultaneously with drilling the hole. . It is a further object of the present invention to provide for the insertion of a coating tube whose dimensions, in particular the wall thickness, are smaller than the dimensions of the coating tubes in known methods.

SUMMARY OF THE INVENTION

These objects are achieved by the method according to the invention, which consists in that at the same time as the drilling movement, at least one coating tube connected to the boiling crown under tension is placed in the borehole in the axial direction by the boiling crown and after the drilling process the drill bit is removed, at least partially, together with the drill rod, from the coating tube. By the fact that according to the invention at the same time as the drilling movement during the drilling, the coating tube is placed in the borehole only by axial direction, it is ensured that the borehole can be started immediately when the borehole is formed. and thereby clogging the borehole. By placing the at least one coating tube directly only by the axial action of the boiling crown in the borehole, a very thin-walled coating tube may be sufficient, since the coating tube in no way needs to absorb and further distribute the forces, as was the case with the prior art. whereby the impact forces have been applied by means of a correspondingly massive coating tube, and must only exhibit sufficient strength to prevent, in the case of rock alone, the rupture or reduction of the cross-section with certainty. In addition, in order to ensure that the boiling crown together with the drill rod is easily removed after the drilling has been completed, the coating tube in the borehole is unchanged, it is furthermore proposed according to the invention to at least partially remove the drill bit together with the drill rod from the coating tube. For this purpose, for example, the drill bit can be substantially divided in the central part and the outer part substantially surrounding the central part, so that after the central part has been separated, this main component of the boiling crown can be removed together with the drill rod from the drill hole.

However, in order to ensure that during the rotational movement of the boiling crown, the coating tube (or pipes) connected to the boiling crown will only be inserted in the axial direction by tensile stress in the sense of the sliding movement during drilling. rotatable relative to the coating tube.

According to a particularly preferred embodiment, after removal of the drill rod and the central portion of the boiling crown, the anchor is fixed to the coating tube (s) and / or filled with a curable material.

In addition, for the simple removal of the boiling crown material, it is advantageously suggested that the material to be removed is introduced inside the coating tube (s) through at least one piercing hole located in the area adjacent to the drill bit and carried out of the drill hole in the open space. between the coating tube or coating tubes and the drill rod. By removing the material to be removed from the borehole in the free space between the sheath tube (s) and the drill rod, the necessary borehole cross-section can be further reduced so that the borehole outer dimensions can be adapted substantially to the outer diameter of the outer sheath tube. only slightly exceed it.

These objects are also achieved by means of a drilling device, in particular impact or rotational impact drilling and lining of holes in the soil or rock material, the drill bit mounted on the drill rod forming an impact and / or rotational movement of a drill hole according to the invention. in that the drill bit is radially formed as split, and that at the outer periphery of the drill bit, at the end facing away from the degraded surface, it is connected via at least one coupling element to at least one coating tube surrounding the drill rods for dragging in the longitudinal direction of the drill hole in alignment with the boiling crown. Because the drill bit is cut in the radial direction, it is easy to ensure when the drill hole is finished that, for example, the central main part of the drill bit can be removed from the drill hole together with the drill rod through the coating tube. The at least one coating tube is immediately placed in the borehole by means of a co-tension pulling in the longitudinal direction when the borehole is formed and remains inside the borehole after the borehole is finished. In addition, in order to ensure that the coating tube placed on the outer periphery of the drill bit only acts in the axial direction of the drill hole, even when rotating the boiling crown, it is additionally advantageous if the drill bit is rotatably connected to the coating pipe (s) through the coupling element. .

Moreover, for a particularly simple connection between the boiling crown and the coating tube carried along with it in the axial direction, it is advantageously suggested that the joints of the separated areas of the drill bit and coating tube circumferentially consist of complementary complementary profiling or a profiled circular intermediate member , mediating the connection between them. Such discrete circumferential areas, which may be formed, for example, in the form of stepped elevations and complementary depressions, can ensure a reliable entrainment of the coating tube when the drill bit is moved, even at comparatively small wall thicknesses of the coating tube.

Alternatively, for a simple connection between the boiling crown and the drift pipe (s) carried by the boiling crown, it is proposed that the coupling elements consist of a plurality of spheres arranged in recesses of substantially semicircular cross-section on the drill bit and complementary recesses on the shroud or coating tubes, respectively, adjoining the drill bit, in accordance with a further preferred embodiment of the device according to the invention. By using balls that are arranged in corresponding recesses on both the drill bit and the connecting piece of the coating tube, a simple connection between the boiling crown and the ball bearing-like coating tube can be established, so that at least one coating tube can be easily rotated against the drill bit. in the rotational and / or rotational-impact movement of the drill bit to form the borehole. According to a particularly preferred embodiment, the interconnecting piece of the at least one coating tube and / or the boiling crown interconnecting region is made of metal, plastic or layer-coated material, whereby the use of balls, for example metal or plastic, the coating tube or the end portion of the boiling crown. Naturally, a lubricant, for example oil, may also be added to the recesses for receiving the coupling elements formed by the balls to facilitate movement of the balls.

In order to prevent transfer of forces arising from the displacement movement to a small cross-section or a small wall thickness of the casing tube, which could lead to its deformation, it is proposed according to another preferred embodiment that the coupling elements between the boiling crown and the casing tube are formed at least of a damping material or have been coated with a damping material layer.

By simply removing the degraded material through the free space between the inside of the coating tube and the drill rod, it can be ensured that the coating tube has at least one through hole in the region facing the drill bit and, in particular, boreholes or through-holes in the circumference of the coating tube.

As already indicated, the coating tubes can be used not only for the additional placement of the anchor and hence generally for anchoring objects, but the drill hole and the coating tubes embedded therein can provide drainage. For this purpose, according to a preferred embodiment, the coating tube is provided along its entire length with perforations distributed substantially regularly around the circumference.

In order to ensure that the central part of the drill bit is easy to remove after the bore has been drilled, the drill bit comprises, according to a preferred embodiment, a central inner part and an outer part which are detachably connected to one another, the central part of the drill bit having an outer diameter slightly smaller than the inner diameter. inner coating tube. Moreover, for a particularly simple and reliable connection of the individual elements of such a multi-part boiling crown, it is proposed that the central inner part of the drill bit has a cross-section deviating from the circular shape for the rotary entrainment and led out through the corresponding holes of the outer part.

Since the coating tube is introduced by means of a drill bit under the action of a sliding or drilling movement in the axial direction, it is not necessary to use lining tubes with a greatly increased diameter, as was necessary in the prior art, especially in retrofitting the coating tube. Therefore, it is sufficient that the outer diameter of the outer casing tube corresponds substantially to the outer dimensions of the drill bit in the radial direction.

The coating tubes introduced into the boreholes by the method according to the invention must in principle only withstand the material into which they penetrate and do not in any way transmit forces, for example impact forces, during rotary impact drilling. It is therefore possible to use a thin-walled coating tube. In a preferred embodiment, the coating tube has a wall thickness of 1 to 3 mm, in particular about 2 mm, so that it is clear that the diameter of the borehole has to be only slightly increased. Coating tubes are lightweight and require less material to produce.

According to a particularly preferred embodiment, the coating tube is made of metal or plastic, which makes it possible to adapt the properties of the coating tube to the type of soil or rock in which the borehole is to be formed. Although the metal coating tube has adequate mechanical strength, however, when used in incoherent or loose soil or rock layers, it may lead to the breakage or constriction of the very thin-walled coating tube, making it difficult or impossible to remove the boiling crown, for example location of the anchor. In cohesive or loose soils, it therefore proves advantageous to use plastic coating tubes having some flexibility, so that after temporarily changing the cross section of the coating tube as the drill bit moves further, these tubes regain their original cross-sectional shape and thus after drilling. the drill bit can be removed and the anchor can then be positioned. Particularly in the case of the use of plastic coating tubes, the use of ball-like coupling elements is particularly advantageous, as mentioned above, in order to allow as free an undisturbed rotation between the drill bit and the coating tubes as the drill bit rotates or rotates. rotary drilling of the coating tube by a drill bit would be disadvantageous when using plastic coating tubes.

Particularly in the case of soil and rock layers in which the material breaks easily and thereby increase the frictional forces acting on the coating tubes, in order to minimize these forces, two coating tubes are arranged according to a preferred embodiment of the invention. spaced by spacers or stop elements disposed in the space between the coating tubes, preferably on one of the facing surfaces of the coating tube jacket. Because the two coating tubes are substantially concentric to one another and are spaced apart from each other, damage to or damage to the outer coating tube from the inside by the material to be crimped can safely prevent damage to the drill rod and by carrying at least one of the two concentrically arranged coating tubes. a borehole lining may be formed in which the outer diameter of the borehole lining is not constant over its entire length. By varying the outer dimensions of the pipe bore liner, the frictional force acting on the coating tubes is minimized, in particular in areas having a smaller bore diameter.

In order to ensure such telescoping and / or separate pulling of the two concentrically disposed coating tubes, according to the invention, the coating tube lying at least externally is formed as a multi-piece and is connected to the inner tube via a closure releasably relative to the inner tube. , in particular through a bayonet closure. The multi-part design of the outer coating tube and the detachable connection of the adjacent coating tube sections, after the closure of the two adjacent coating tube sections has been released, can pull the coating tube section together by pulling the other fixedly in place to achieve a drilling hole lining with varying diameters.

In order to ensure complete lining of the borehole and to ensure targeted entrainment of either the inward or outwardly extending portions of the coating tubes, the device according to the invention is preferably designed such that concentrically arranged coating tubes have at least one end region annular elements oriented into an annular In the region of the connecting tube, in the area of the connecting element, in particular the neck element of the inner tubes, guide and disconnecting elements are arranged on the outermost elements of the coating tubes lying adjacent to one another. By having concentrically disposed coating tubes in the at least one end region of the stop elements oriented into the annular space between the coating tubes, complete expansion of the inside and outside of the coating tubes is prevented with certainty, and by means of the disconnecting elements, to ensure a targeted entrainment of certain inner and outer sections of the tubes.

In order to ensure the removal of the inner region of the boiling crown by the annular space formed by the coating tubes, it is advantageous if the concentric layers of the coating tubes are connectable to the outer region of the drill bit. In particular, at least an outer coating tube is anchored on the drill bit so that at least the outer coating tube is reliably carried in the area of the drill bit.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained in more detail with reference to the accompanying, schematically illustrated, exemplary embodiments.

Fig. 1 is a partial cross-sectional view of a first embodiment of an apparatus according to the invention for carrying out the method according to the invention, FIG. 2 is a view in the direction of the arrow II of FIG. 1 for a drill bit of a device according to the invention, FIG. 3 is a partial cross-sectional side view of an enlarged longitudinal section of the device according to the invention of FIG. 1 after removal of the central part of the drill bit and drill rod, to a larger scale than shown in FIG. 1, FIG. Fig. 4 is a partial cross-sectional view of an anchor drill hole provided by the device according to the invention; 5 shows a modified embodiment of the device according to the invention for carrying out the method according to the invention in a similar view to that of FIG. 1, FIG. 6 is a view in the direction of the arrow VI of FIG. 5 for a drill bit of this second embodiment, FIG. 7 shows a modified embodiment of the device according to the invention for carrying out the method according to the invention, again similar to that of FIG. 1, FIG. 8 is a schematic representation of the inside and outside of the coating tube, and FIG. 8a, seen in the direction of the drill bit, there is shown a view of the first sections of the coating tubes assembled together; FIG. Fig. 8b shows the first and second portions of the coating tubes seen from the drill bit in the assembled state in the assembled state; 8c are the same as FIG. 8b shows sections of the coating tubes in a partially extended condition, and FIG. 8d show sections of the coating tubes in a fully extended state.

DETAILED DESCRIPTION OF THE INVENTION

In FIG. 1 and 2, a drill bit 1 is shown which consists of a central part, the so-called drill bit. and an outer part, hereinafter referred to as an annular drill bit 3, which surrounds the pilot bit 2. On the front face of the pilot drill bit 2 and the annular drill bit 3, there are embossing elements known per se, such as, for example, substantially hemispherical inserts 4 of hard material.

At the end facing away from the drilling surfaces of the drill bit 1, an outer coating tube 5 is connected to the drill bit 1 with a relatively small wall thickness, for example 2 mm, using a profiled annular intermediate member 6 which engages with stepped or nose-shaped projections 7 into corresponding The co-pulling inner coating tube 5 'has at its upper end region a stop element 29 which closely fits to the outer coating tube 5. Through the intermediate member 6 occurs for driving the outer coating tube 5 in the direction of drilling or feed 8 by axial tension, while the drill bit 1 is rotatably mounted against the coating tubes 5 and 5 'so that this rotational movement does not interfere with the boiling crown 1 in the drilling. Thus, it is evident that the coating tubes 5 and 5 ', which may be designed as thin-walled, are entrained by the boiling crown 1, wherein the coating tubes 5 and 5' surround the drill rods 9 so as to create a free space 10.

Further, FIG. 1, the outer casing tube 5 and the inner casing tube 5 'have a plurality of circumferentially distributed through holes 11 in their forward section, which overlap each other in the retracted state and through which the material to be removed in the direction of the arrow 12 is discharged into the free space 10 between the boreholes the rod 9 and the coating tubes 5 and 5 'and can then be conveyed out. In this case, the drill rods 9 may be in the form of a pipe, or may be provided with other piping through which gaseous or liquid flushing means can be introduced and forced through the openings between the boiling crown 1 and the through holes 11 into the free space 10.

In FIG. 1 and 2, the outer contour of the borehole 13 to be formed is schematically indicated. It is evident that when using thin-walled tubes 5 and 5 ', which are only subjected to thrust by the crown 1 in the axial direction of the borehole 13, 13 dimensioned correspondingly smaller. After the drill hole 13 has been completed, the pilot drill bit 2, which has a cross-section preferably deviating from the circular shape, is detached from the annular boiling crown 3 and together with the drill rod 9 is pulled out by the coating tube 5 'so that the total interior space defined by the coating tube 5 'remains free to fit the anchor or fill with backfill.

In FIG. 3 shows a larger length section, it being understood that the central portion of the boiling crown 1, i. j. The pilot drill bit 2 has already been removed together with the drill rod 9 so that the coating tubes 5 and 5 'and the annular drill bit 1 remain in the borehole 13. 3 it is further evident that next to the intermediate member 6 between the boiling crown 1 and the boiling crown 1, respectively. the remaining annular boiling crown 3 and the coating tube 1 in the uppermost section is connected to the boiling crown via the coupling element 14. Here, for example, the filler mass can be introduced through the through holes 11 formed in the front section into the front area of the borehole 13 and also for anchoring into the free space between the boundary of the borehole 13 and the adjoining coating tube S. in its end sections, the projections 31 and 32, which are connected to the neck 30, which together firmly connect the two sections of the inner coating tubes 5 '.

In FIG. 4 shows an embodiment in which, after removal of the drill rod 9 into the coating tubes 5, 5 ', shown schematically in a fully extended state, for example, a screw-in anchor 15 is inserted, which is additionally supported on its free end or clamped in the ground by screwing 16 In this case, a corresponding backfill mass can be introduced into the coating tubes 5, 5 'immediately when the anchor 15 is placed, in order to ensure the anchoring of the foremost section with the annular drill bit 3 remaining in the ground.

In FIG. 5 and 6 show an embodiment similar to that of FIG. 1 and 2. The coating tube 5 is rotatably mounted immediately on the outer periphery of the annular boiling crown 17 and the pilot drill bit 19 is provided with cutting edges 18. In this embodiment, the bearing on the outer periphery of the annular boiling crown 17 is realized through correspondingly spaced or graduated partial regions. both at the annular boiling crown 17 and at the end of the coating tube 5 facing the boiling crown 1, the corresponding profiling being indicated by the reference numerals 20 and 21. Inside the coating tube 5 'lies with the stop element 29. The drill rod 22 is connected to the drill Also in this embodiment, after completion of the drill hole, the central portion - pilot drill bit 19 of the boiling crown 1 is pulled out together with the drill rod 22 inside the coating tube 5 or 5 '. Subsequently, the anchor can be reintroduced into the interior and / or it can subsequently be filled with curable material, in particular cement milk.

Instead of placing the anchor in a borehole 13 lined with coating tubes 5, 5 ', such a borehole 13 can also serve, for example, for drainage or drainage. In such a case, a plurality of perforations or through recesses are formed along the length and circumference of the coating tubes 5 and 5 '.

In the embodiment of FIG. 7 again shows a multi-part drill bit 1 with inserted hard material inserts 4 and coating tubes 5 and 5 'carried by the drill bit 1. While in the previous embodiment, the coating tubes 5, 5' may be made of, for example, a metal material, shown in FIG. 7, 5.5 'coating tubes and stop element 29 made of plastic.

The fitting of the boiling crown 1 is effected by means of a plurality of coupling elements in the form of spheres 23 which are arranged in a corresponding cross-section of the hemispherical recesses 24 on the back of the boiling crown 1 and in complementary recesses 25 of the connecting piece 26. plastic. The spheres 23, which form the coupling elements between the boiling crown 1 and the coating tube 5, thus form a ball-like connection, thereby simply turning over between the coating tube 5 and the drill bit 1 in a rotational or rotational impact movement. Since the plastic coating tube 5 may have a high flexibility, support tubes 27 and 28 extending from the inside to the coating tube 5 and surrounding the pipe 5 on its outside are immediately provided in the area adjacent to the drill bit 1. the plastic coating tube 5 is immediately attached to the connecting piece 26 and the support tubes 27 and 28 can be formed, for example, of metal.

In order to adapt the material properties of the balls 23, which may be made of metal or plastic, to the bearing surfaces or the bearing elements in the area of the recesses 24 and 25, the connecting piece 26 and the boiling crown extension 1 may also be made of metal or plastic, corresponding layers.

In FIG. 8 shows schematically how the coating tubes 5 ', 5 lying inside and outside can be pulled or slid relative to one another when the boiling crown 1 is moved into the rock material or the soil against one another. Fig. 8a shows, with respect to the drill bit 1, the first sections of the coating tubes 5, 5 ' j. in the drilling start position. The outer section of the coating tube 5 has, at its front end, a schematic representation of an intermediate member 6 which is intended to receive the outer section of the coating tube 5 on the boiling crown 1 (not shown in FIG. 8). In FIG. 8, the direction of displacement of the boiling crown 1 is indicated by arrows 33. At its end facing away from the boiling crown 1, the outer coating tube 5 has a stop element 34 which is slidably mounted on the inner coating tube 5 '. Analogously, at the end of the inner coating tube 5 'facing the boiling crown 1, a stop element 29, which can alternately act with the stop element 34 of the outer coating tube 5 in the extended state.

In FIG. 8b the first two sections of the coating tube 5, 5 'are schematically indicated. The first section (again with respect to the drill bit 1) of the coating tube 5 has at its end facing away from the drill bit 1 a stop element 34, which in the extended state acts alternately with the stop element 29 of the inner coating tube 5 '. The two outer coating tubes 5 shown here are not directly connected to one another, but are connected only through a neck 30, which firmly connects the two inner coating tubes 5 'to one another. For this connection, protrusions 31, 32 are provided on the two outer coating tubes, which can interfere with the recesses of the neck element 30. In the put-together state, both the outer coating tube sections 5 and the inner coating tube sections 5 '

Now that the length of the inner section of the coating tube is also available as a lining to the borehole, as shown in FIG. 8c, indicated by the rotational movement of the second section (seen from the direction of the drill bit 1) of the coating tube 5 with respect to the neck 30, the projection 31 from engaging the corresponding neck opening 30, followed by further displacement of the drill bit 1 in the direction of the arrow 33 is guided by the outer coating tube 5 sliding along the inner coating tube 5 'until the stop members 29 and 34 abut against each other.

Also, in order for the length of the first section of the coating tube 5 'to be added to the lining of the borehole, in a further procedure, holding the outer coating tube 5 at the end facing away from the drill bit 1 counteracts the displacement, thereby protruding 32 of the first section of the outer coating tube 5. it rips from the corresponding recess of the neck 30 of the inner casing tube 5 ', and the portion of the outer casing tube 5, seen in the direction of the drill bit 1, is slidably carried by the pull along the first section of the casing tube 5' in the sliding direction.

In the fully extended state as shown in FIG. 8d, the profile of the borehole lining is thereby profiled, whereby in particular the frictional forces acting on the coating tubes 5,5 'can be appreciably reduced.

Claims (22)

  1. A method of drilling, in particular impact or rotational impact drilling and lining of holes and / or inserting anchors into holes in soil or rock, wherein a bore (9) mounted on the drill rod (9) by an impact and / or rotational movement forms a drill hole ( 13) and a coating tube (5) is provided with a liner, after which at least a portion of the boiling crown (1) together with the drill rod (9) is removed from the coating tube (5) after the drilling process, characterized in that only by pulling through the boiling crown (1) in the axial direction into the borehole (13) at least one thin-walled coating tube, which is formed with a boiling crown (1), which is radially cut, connected at the end remote from the work surface removing the drill rod and the drill bit, the anchor (15) is placed in the coating tube (5) and / or filled with curable material.
  2. Method according to claim 1, characterized in that the drill bit (1) is rotatable relative to the coating tube (s) (5).
  3. Method according to claim 1 or 2, characterized in that the material to be discharged with at least one through hole (11) arranged in the region adjoining the drill bit (1) extends inside the coating tube (s) (5) and the free space between the pipe (s) (5) and the drill rod (9) are discharged from the borehole (13).
  4. Drilling device, in particular impact or rotational impact drilling and tiling and / or anchoring of anchors in holes in soil or rock, the drill bit (1) mounted on the drill rod (9) by an impact and / or rotational movement forming a drill hole (13), according to claim 1, characterized in that the drill bit (1) is formed as divided in a radial direction and is connected to the outer periphery of the drill bit (1) at least one clutch element at the end facing away from the degraded surface. at least one thin-walled coating tube (5) surrounding the drill rods (9, 22), only for dragging in the longitudinal direction of the drill hole (13).
  5. Device according to claim 4, characterized in that the drill bit (1) is rotatably connected to the coating tube (s) (5) via the coupling element.
  6. Apparatus according to claim 4 or 5, characterized in that the coupling elements are formed by shoulder regions of the drill bit (2, 17) and a coating tube (5) with mutually adapted complementary profiling, optionally with a profiled annular intermediate member (6). .
  7. Device according to claim 4 or 5, characterized in that the coupling elements consist of a plurality of spheres (23) which are arranged in a recess (24) with a substantially semicircular cross section on the drill bit (1) and in a complementary recess (25) on the interconnector. a piece (26) of the coating tube (5) following the drill bit (1).
  8. Device according to claim 7, characterized in that the connecting piece (26) of the at least one coating tube (5) and / or the adjoining region of the drill bit (1) are made of metal, plastic or a layer-coated material.
  9. Apparatus according to any one of claims 4 to 8, characterized in that the coupling elements between the drill bit (1) and the coating tube (s) (5) are at least partly made of or coated with a buffer material.
  10. Apparatus according to any one of claims 4 to 9, characterized in that the coating tube (s) (5) has at least one through hole (11) in its end region facing the drill bit (1), in particular a plurality of, circumferentially spaced, drilled or through slots.
  11. Apparatus according to any one of claims 4 to 10, characterized in that the coating tube (s) (5) is provided along its entire length with perforations distributed substantially regularly around the circumference.
  12. Apparatus according to any one of claims 4 to 11, characterized in that the drill bit (1) comprises at least one central part and at least one outer part which are detachably connected to one another with a common drive, the central part of the drill bit (1) having a slightly smaller outer diameter relative to the inner diameter of the inner coating tube (5).
  13. Apparatus according to claim 12, characterized in that, for driving by rotary movement, the inner central portion of the drill bit (1) has a cross-section deviating from the circular shape and extends through a corresponding opening of the outer portion (3) of the drill bit (1).
  14. Apparatus according to any one of claims 4 to 13, characterized in that the outer diameter of the outer coating tube (5) corresponds substantially in the radial direction to the outer dimensions of the drill bit (1).
  15. Device according to any one of claims 4 to 14, characterized in that the coating tube (s) (5) has a wall thickness in the range of 1 to 3 mm, preferably 2 mm.
  16. Apparatus according to any one of claims 4 to 15, characterized in that the coating tube (s) (5) is made of metal or plastic.
  17. Apparatus according to any one of claims 4 to 16, characterized in that after the drill bit (1) and the drill rod (9, 22) have been removed, the coating tube (5) can be positioned, for example, into its protruding section, screw anchor (15).
  18. Apparatus according to any one of claims 4 to 17, characterized in that the two coating tubes (5, 5 ') are arranged substantially concentrically to each other and are held apart by spacers or stop elements (29) arranged in the intermediate space between the coating tubes (5, 5 '), preferably on one surface facing each other of the coating tube (5, 5').
  19. Apparatus according to claim 18, characterized in that the at least outer coating tube (5) is multipart and is releasably connected in the region of at least one adjacent section of the coating tube by the projections (31, 32), releasably rotating adjacent elements, in particular bayonet cap, with inner tube (5 ').
  20. Apparatus according to claim 18 or 19, characterized in that the mutually concentric coating tubes (5, 5 ') have stop elements (29, 34) directed at an annular space between the coating tubes (5, 5') in at least one end region. 1), and in the region of the connecting element, in particular the neck (30) of the inner tubes, guide and uncoupling elements are arranged on adjacent outer-facing coating tube elements.
  21. Apparatus according to claim 18, 19 or 20, characterized in that the concentrically arranged coating tubes (5, 5 ') are connectable to the outer region of the drill bit (1).
  22. Device according to any one of claims 18 to 21, characterized in that at least the outside of the coating tube (5) is releasably mounted on the drill bit (1).
SK593-99A 1996-11-12 1997-11-12 Process and device for simultaneously drilling and lining hole SK283483B6 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT197896A AT407895B (en) 1996-11-12 1996-11-12 Method and device for drilling and lining bore holes
AT106597A AT408472B (en) 1997-06-18 1997-06-18 Simultaneous drilling and lining of holes - using drill bit on drilling rod using striking or rotary motion and forming lining with sleeve tube pulled into hole by drill bit
PCT/AT1997/000247 WO1998021439A1 (en) 1996-11-12 1997-11-12 Process and device for simultaneously drilling and lining a hole

Publications (2)

Publication Number Publication Date
SK59399A3 SK59399A3 (en) 2000-03-13
SK283483B6 true SK283483B6 (en) 2003-08-05

Family

ID=25594770

Family Applications (1)

Application Number Title Priority Date Filing Date
SK593-99A SK283483B6 (en) 1996-11-12 1997-11-12 Process and device for simultaneously drilling and lining hole

Country Status (17)

Country Link
EP (1) EP0948701B1 (en)
JP (1) JP3813177B2 (en)
KR (1) KR100338308B1 (en)
CN (1) CN1079880C (en)
AT (1) AT217681T (en)
AU (1) AU726332B2 (en)
CA (1) CA2271655C (en)
CZ (1) CZ296814B6 (en)
DE (1) DE59707305D1 (en)
ES (1) ES2176709T3 (en)
HK (1) HK1023611A1 (en)
HR (1) HRP970600B1 (en)
ID (1) ID21554A (en)
PL (1) PL185256B1 (en)
SK (1) SK283483B6 (en)
TR (1) TR199900983T2 (en)
WO (1) WO1998021439A1 (en)

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AT408473B (en) * 1998-10-20 2001-12-27 Vorspann Technik Gmbh Anchor and drill hole with set anchor
WO2001063085A1 (en) 2000-02-24 2001-08-30 Techmo Entwicklungs- Und Vertriebs Gmbh Device for drilling, especially percussion or rotary percussion drilling, holes
AUPQ639900A0 (en) * 2000-03-21 2000-04-15 Dht Technologies Limited Segment for a core drill bit and method of manufacture
AT5482U1 (en) 2001-01-25 2002-07-25 Techmo Entw & Vertriebs Gmbh Method and device for drilling holes in ground or stone material
SK286790B6 (en) * 2001-04-26 2009-05-07 "Alwag" Tunnelausbau Gesellschaft M.B.H. Method and device for drilling a hole and for securing an anchorage in a bore hole
AT412739B (en) 2002-01-22 2005-06-27 Techmo Entw & Vertriebs Gmbh Method and device for drilling a hole in ground or rock material and for forming an anchorage
AT412802B (en) * 2003-10-01 2005-07-25 Techmo Entw & Vertriebs Gmbh Method and device for drilling holes in soil or rock material
AT509159B1 (en) 2004-03-23 2011-09-15 Alwag Tunnelausbau Gmbh Method and device for drilling, in particular fitting or torque drilling, a hole in ground or rock material and for forming an anchorage in the hole
AT501875B1 (en) 2005-06-07 2008-05-15 Alwag Tunnelausbau Gmbh Method and device for drilling, in particular fitting or turning of a hole in ground or rock material
PL1818499T3 (en) 2006-02-09 2011-11-30 Gonar Sp Z O O Apparatus for simultaneously drilling and casing boreholes
DE202006003409U1 (en) * 2006-03-04 2006-08-10 Maschinenbau Kolk Gmbh Support sleeve system especially for tunnel construction has separate sleeve sections locked together via ratchet and groove profiles
AT504560B1 (en) 2006-11-29 2009-06-15 Techmo Entw & Vertriebs Gmbh Device for buttoning drilling in gestein material
AT10289U1 (en) 2007-06-19 2008-12-15 Alwag Tunnelausbau Gmbh Method and device for drilling a hole in ground or rock material and forming an anchorage
FI20105983A0 (en) * 2010-09-23 2010-09-23 Atlas Copco Rotex Ab Oy Method and device for submersible drilling
DE102011120572A1 (en) 2011-01-27 2012-08-02 Minova International Ltd. Drilling device for impact or rotary impact drilling with connecting sleeve
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JP5883192B1 (en) * 2015-09-18 2016-03-09 株式会社オーク Drilling bit
CN106437522A (en) * 2016-11-30 2017-02-22 淮南矿业(集团)有限责任公司 Deep-level and high-ground-stress coal uncovering and drilling construction device and method
CN107012865A (en) * 2017-03-31 2017-08-04 中国二十冶集团有限公司 The construction method of the anti-collapse hole of anchor pole
CN109667542B (en) * 2018-12-28 2020-06-05 至永建设集团有限公司 Construction method for drilling anchor cable by multistage segmental discontinuous pipe following in broken stratum

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Also Published As

Publication number Publication date
EP0948701B1 (en) 2002-05-15
CA2271655A1 (en) 1998-05-22
DE59707305D1 (en) 2002-06-20
SK59399A3 (en) 2000-03-13
CN1079880C (en) 2002-02-27
JP3813177B2 (en) 2006-08-23
HRP970600B1 (en) 2002-06-30
HK1023611A1 (en) 2002-07-26
PL333244A1 (en) 1999-11-22
ID21554A (en) 1999-06-24
JP2001503486A (en) 2001-03-13
CZ296814B6 (en) 2006-06-14
CA2271655C (en) 2006-04-18
CZ162399A3 (en) 2000-06-14
HRP970600A2 (en) 1999-08-31
AU4856297A (en) 1998-06-03
AU726332B2 (en) 2000-11-02
WO1998021439A1 (en) 1998-05-22
EP0948701A1 (en) 1999-10-13
KR100338308B1 (en) 2002-05-27
CN1237222A (en) 1999-12-01
KR20000053240A (en) 2000-08-25
PL185256B1 (en) 2003-04-30
TR199900983T2 (en) 2000-07-21
ES2176709T3 (en) 2002-12-01
AT217681T (en) 2002-06-15

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Effective date: 20111112