JP2017061845A - Temporary work facility, fastener used in temporary work facility and hole digging method using temporary work facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary work facility which can be temporarily provided at a desired position in a work surface of a slope frame, a slope frame structure and others easily and which can be easily removed from the work surface; a fastener used in the temporary work facility; and a hole digging method using the temporary work facility.SOLUTION: A lock bolt construction facility 1 comprises a lock bolt construction machine 10 to be arranged in a slope frame 4 as a work surface, as a work facility body, and a fastener 25 for fastening the lock bolt construction machine 10 to the slope frame 4. The fastener 25 comprises a lower part fixing part 27 buried and fixed in the slope frame 4 and an upper part fixing part 26 that is detachably connected with the lower part fixing part 27 and that projects to the outside from the slope frame 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a temporary work facility such as a scaffold or a hole drilling machine, a fixture used therefor, and a hole drilling method using the temporary work facility.

  Known methods for stabilizing slopes and slopes include ground anchors, rock bolts, and rebar insertions. In any construction method, drilling holes are formed on slopes and slopes, and this excavation is performed. A ground anchor, a lock bolt, or a reinforcing material is applied to the hole.

  For example, when fixing a slope frame to a slope with a lock bolt, first, a reinforcing bar is constructed in a grid pattern on the slope. Next, a box-pipe pipe with the upper surface closed is installed at the intersection of the reinforcing bars, and a formwork made of netting is applied to the rebar to surround the reinforcing bars, and then concrete is sprayed into the formwork. Install the frame. Next, after the concrete is hardened, the box opening pipe is first opened in order to install the lock bolt. Next, with the drilling machine suspended from the crane, insert the drilling tool of the drilling machine into the boxing pipe, drill the drilling hole of the required depth, and install the lock bolt Become.

  By the way, as a method of drilling the excavation hole, in addition to the method of drilling in a state where the drilling machine is suspended in the crane as described above, a drilling machine is attached to the tip of the boom of the backhoe, There is a method of drilling in a state in which a scaffolding is assembled in the frame and the drilling machine is supported by the scaffolding. When the drilling machine is supported with a scaffolding or when the drilling machine is attached to the tip of the backhoe boom, the drilling machine can be supported relatively stably. When the machine is suspended, it may be difficult to receive the reaction force during drilling. In particular, in double pipe excavation where the outer tube rod is in sliding contact with the inner surface of the excavation hole, when the depth of the excavation hole increases, the reaction force during drilling acting on the drilling machine is proportional to the depth of the excavation hole. There is a problem that the hole becomes large and cannot be drilled smoothly.

  Therefore, in the drilling method in which the drilling machine is suspended by a crane, a clamping device is provided at the tip of the drilling machine in order to receive the reaction force during drilling. A structure configured to hold a frame (for example, refer to Patent Document 1), or a structure in which an auxiliary anchor is formed in advance in a vertical frame of a legal frame and a hole drilling machine is supported by the auxiliary anchor (for example, And Patent Document 2) have been proposed.

JP 2007-162362 A JP-A-11-117308

  When the vertical frame or horizontal frame of the frame is held by a clamp as in Patent Document 1, or when a drilling machine is connected to an auxiliary anchor formed in advance in the vertical frame of the frame as in Patent Document 2. In some cases, the frame cannot be clamped at the outer edge of the slope, or the auxiliary anchor cannot be provided. Further, when the auxiliary anchor is provided, after the drilling operation is completed, the auxiliary anchor remains in a state of protruding from the frame, so that it is necessary to remove it, and the operation is complicated.

  In addition, when supporting a drilling machine with a scaffold in the frame, it is necessary to move the drilling machine sequentially, so basically a single pipe is connected vertically and horizontally to the entire frame. Thus, it is necessary to construct a support frame for the scaffold plate, and it is difficult to construct the support frame locally, so that there is a problem that the construction work and the dismantling work of the scaffold become very complicated. In addition, it is possible to install a drilling machine by providing a support frame for the scaffolding plate locally with respect to the normal frame with the auxiliary anchor as described in Patent Document 2 as a fixed point. In some cases, auxiliary anchors may not be provided at the outer edge of the frame, etc., and it is necessary to remove the auxiliary anchors after completion of the drilling operation, which makes the operation complicated.

  The purpose of the present invention can be easily and temporarily set at a desired position with respect to a work surface such as a slope, a ground, a slope structure constructed on the slope, a slope or a ground including a reaction force receiving member, Moreover, it is to provide a temporary work facility that can be easily removed from the work surface, a fixture used therefor, and a drilling method using the temporary work facility.

The present invention includes the following inventions.
(1) Temporary work equipment including a work equipment main body arranged on a work surface and a fixing tool for fixing the work equipment main body to the work surface, the fixing tool being embedded and fixed to the work surface. A temporary work facility comprising: a lower fixing portion; and an upper fixing portion that is detachably connected to the lower fixing portion and protrudes outward from the work surface.

  In this temporary work facility, a lower fixing portion is embedded or fixed in advance in the area where the work equipment main body such as a scaffold or a drilling machine is installed and / or the work surface in the vicinity thereof, if necessary. By connecting the fixing part and using the upper fixing part protruding from the work surface to the outside as a fixing point, it is possible to install a work equipment body such as a scaffold or a drilling machine. For this reason, by embedding and fixing the lower fixing portion at a desired position on the work surface, the work equipment main body such as a scaffold or a drilling machine can be reliably installed at the desired position. Moreover, when removing work equipment, while removing the work equipment main body, the upper fixing part connected detachably can be removed from a lower fixing part, and a fixture can be easily removed from a work surface. Although the lower fixing portion is left in an embedded state on the work surface, it does not protrude greatly outside the work surface, so that it is possible to prevent a decrease in the appearance and safety of the work surface.

(2) The work equipment main body is a hole drilling machine, an insertion hole through which a drilling tool is inserted is formed in the fixture, and the reaction force during drilling by the hole drilling machine is operated via the fixture. The temporary work facility described in (1), which can be received on the surface. Unlike the inventions described in Patent Documents 1 and 2, since the invention can receive a reaction force during drilling that acts on the drilling machine by using a fixture provided at the drilling position. It is possible to reliably receive the reaction force of the drilling machine even at the outer edge of the surface. In addition, the lower fixing part can also be used as a box-pipe for constructing a lock bolt on the frame, and the upper fixing part can be used repeatedly. Cost rise can also be suppressed. In addition, since the reaction force is received through the fixing tool provided at the drilling position, the lever length of the connecting means for connecting the drilling machine and the fixing tool is shortened, and the bending tool or fixture is bent greatly. The moment can be prevented from acting, and the drilling machine and the fixture can be prevented from being damaged. Furthermore, by connecting the drilling machine to the fixture, the drilling tool can be easily aligned concentrically with the insertion hole of the fixture, so that the positioning operation of the drilling machine is facilitated.

(3) The temporary work facility according to (1) or (2), wherein an engagement protrusion that protrudes outward and engages with the work surface is formed on a side surface of the lower fixing portion. In this invention, the attachment strength of the lower fixing portion with respect to the work surface can be easily improved.

(4) The female screw according to any one of (1) to (3), wherein a female screw is formed on one of the lower fixing part and the upper fixing part, and a male screw that is detachably engaged with the female screw is formed on the other. Temporary work equipment. According to the present invention, the lower fixing portion and the upper fixing portion can be detachably connected, and both can be configured as thin as possible. In other words, when the lower fixing part is also used as a box-pipe as described above, the reinforcing bars of the frame are arranged outside the lower fixing part, and a drilling tool is inserted inside the lower fixing part. Therefore, it is preferable to configure the lower fixing portion as thin as possible. However, in the present invention, the upper and lower fixing portions are connected by the female screw and the male screw. It is preferable because the lower fixing portion can be configured thinly and can be easily applied to the frame while the fixing portion is configured to be detachably connectable.

(5) The upper fixing portion is configured to be fitted into the lower fixing portion, and an engaging protrusion that protrudes inwardly is formed on the lower fixing portion. (1) to (3) having a guide portion extending in the axial direction and a locking hole having a locking portion extending in the circumferential direction from the back end portion of the guiding portion and detachable in the engaging protrusion. ) Temporary work equipment as described in any of the above. In this invention, the upper fixing portion and the lower fixing portion can be easily and reliably connected by inserting the engaging protrusion into the guide portion and engaging the engaging protrusion with the locking portion. It becomes possible. In addition, the upper fixing part and the lower fixing part can be constructed thinly and the lower fixing part can be applied to the frame without difficulty while sufficiently securing the mechanical strength of the upper fixing part and the lower fixing part. .

(6) The temporary work facility according to (5), wherein an inclined guide surface that guides the guide portion in the circumferential direction toward the engagement protrusion is formed on the upper fixing portion by contact with the engagement protrusion. In this invention, when the upper fixing portion is connected to the lower fixing portion, the engaging protrusion is guided to the guide portion side by the inclined guide surface, and the engaging protrusion and the guide portion can be aligned in the circumferential direction. The upper fixing part and the lower fixing part can be easily connected.

(7) In any one of (1) to (6), the lower fixing portion is embedded and fixed to the work surface so that the upper end surface of the lower fixing portion is substantially flush with the work surface. Temporary work equipment. The lower fixing part prevents deterioration of the appearance, and when a lock bolt or the like is constructed through the lower fixing part, post-processing is required to make the lower fixing part flush with the work surface. Thus, it is preferable to embed and fix the lower fixing portion in advance so as to be substantially flush with the work surface.

(8) The work surface is configured by any one of a slope, a natural ground, a slope structure constructed on the slope, a slope including a reaction force receiving member, or a natural ground (1) to (7). Temporary work equipment as described in any of the above. The temporary work facility of the present invention can be applied to slopes on slopes and natural grounds, substantially horizontal flat surfaces, work surfaces including reaction force receiving members installed on slopes or natural grounds, and the like.

  The fixture described below is used in the temporary work facility, and the same effects as the temporary work facility can be obtained.

(9) A fixing tool for temporarily fixing the work equipment body to the work surface, the lower fixing portion embedded and fixed to the work surface, and the lower fixing portion detachably connected to the work surface from the work surface. A fixing device comprising an upper fixing portion protruding outward.

(10) The work equipment main body is a drilling machine, an insertion hole through which a drilling tool is inserted is formed in the fixture, and a reaction force when drilling by the drilling machine is operated via the fixture. The fixture according to (9), which can be received by a surface.

(11) The fixture according to (9) or (10), wherein an engaging protrusion that protrudes outward and engages with the work surface is formed on a side surface of the lower fixing portion.

(12) The female screw according to any one of (9) to (11), wherein a female screw is formed on one of the lower fixing portion and the upper fixing portion, and a male screw that is detachably engaged with the female screw is formed on the other. Fixture.

(13) The upper fixing portion is configured to be fitted in the lower fixing portion, and an engaging protrusion protruding inward is formed in the lower fixing portion, and the upper fixing portion is proximal to the distal end side. (9)-(11) which has a guide portion extending in the axial direction and a locking portion extending in the circumferential direction from the back end portion of the guide portion and which can be engaged and disengaged in the engaging protrusion. ).

(14) The fixture according to (13), wherein an inclined guide surface that guides the guide portion in the circumferential direction toward the engagement protrusion is formed on the upper fixing portion by contact with the engagement protrusion.

(15) In any one of (9) to (14), the lower fixing portion is embedded and fixed to the work surface so that the upper end surface of the lower fixing portion is substantially flush with the work surface. Fixing tool.

(16) The work surface is composed of any one of a slope, a natural ground, a slope structure constructed on the slope, a slope including a reaction force receiving member, or a natural ground (9) to (15). The fixing tool in any one of.

(17) The lower fixing portion is embedded and fixed on the work surface, the upper fixing portion is detachably connected to the lower fixing portion, and then a drilling machine is coupled to the upper fixing portion, A drilling method characterized in that a working surface is drilled through an insertion hole in the upper and lower fixing portions while receiving a reaction force at the time of drilling acting on the working surface via a fixture composed of upper and lower fixing portions. . The lower fixing portion may be embedded and fixed on the work surface while being connected to the upper fixing portion, or may be embedded and fixed on the work surface with the upper fixing portion removed.

  In the second drilling method described in the above (17), a fixture is constructed at a desired position on the work surface, and the reaction force during drilling acting on the drilling machine is received using the fixture. Therefore, unlike the inventions described in Patent Documents 1 and 2, it is possible to reliably receive the reaction force of the drilling machine even at the outer edge of the slope. Moreover, since the lower fixing part can be used also as a box-pipe, and the upper fixing part can be used repeatedly, an increase in the number of parts and an increase in construction cost due to the provision of fixing tools can be suppressed. Further, since the reaction force is received through the fixture having the insertion hole through which the drilling tool is inserted, the lever length of the connecting means for connecting the drilling machine and the fixture is shortened, so that the drilling machine and fixture Therefore, it is possible to prevent a large bending moment from acting on the drilling machine, and it is possible to prevent the drilling machine and the fixture from being damaged. Furthermore, by connecting the drilling machine to the fixture, the drilling tool can be easily aligned concentrically with the insertion hole of the fixture, so that the positioning operation of the drilling machine is facilitated.

(18) Prior to the construction of the concrete constituting the slope structure as the work surface, the lower fixing part with the upper surface opening closed is installed at the drilling position of the slope structure, and then the concrete is used. While constructing the surface structure, the lower fixing part is buried and fixed in the slope structure, and after the concrete is hardened, the lower fixing part is opened and the upper fixing part is attached to and detached from the lower fixing part. After freely connecting, a drilling machine is connected to the upper fixed part, and the reaction force during drilling acting on the drilling machine is reduced by the slope structure through the fixture consisting of the upper and lower fixed parts. A drilling method, wherein the slope is drilled through the insertion holes in the upper and lower fixed portions while receiving.

  In the second drilling method described in (18), the same function and effect as in the (17) drilling method can be obtained. In addition, the lower fixing part can be constructed separately from the slope structure, but since it is constructed together with the slope structure, the lower fixing part can be easily constructed, and the lower fixing part and the slope are constructed. Sufficient bonding strength with the structure can be secured.

(19) A reaction force receiving member formed by embedding and fixing the lower fixing portion is installed on a slope or ground, and a work surface is formed by the slope or ground and the reaction force receiving member installed on the slope. An upper fixing part is detachably connected to the lower fixing part, and then a drilling machine is connected to the upper fixing part, and reaction force during drilling acting on the drilling machine is determined from the upper and lower fixing parts. A drilling method comprising drilling a natural ground through an insertion hole in the upper and lower fixing parts while receiving the reaction force through a fixing tool.

  In the third drilling method according to the above (19), even in a natural ground where no legal frame is formed, the reaction force receiving member used for stabilizing the natural ground is effectively used to reliably perform the drilling. It becomes possible to drill holes while receiving the reaction force of the machine. In addition, since the reaction force is received through a fixture having an insertion hole through which the drilling tool is inserted, the lever length of the connecting means for connecting the drilling machine and the fixture is shortened, so that the drilling machine and fixture Therefore, it is possible to prevent a large bending moment from acting on the drilling machine, and it is possible to prevent the drilling machine and the fixture from being damaged. Furthermore, by connecting the drilling machine to the fixture, the drilling tool can be easily aligned concentrically with the insertion hole of the fixture, so that the positioning operation of the drilling machine is facilitated.

(20) The lower fixing portion is embedded and fixed to the work surface so that an upper end surface of the lower fixing portion is substantially flush with the work surface. Drilling method. In this invention, the upper end portion of the lower fixing portion does not protrude on the work surface. It is possible to prevent the lower fixing portion from interfering with work.

(21) The drilling machine according to any one of (17) to (20), wherein the drilling machine is suspended from a crane so that the position of the drilling machine can be switched, and drilling is performed by the drilling machine in a suspended state by the crane. Hole method. When drilling by suspending the hole drilling machine from the crane, the reaction force during drilling could not be received, but in the present invention, the reaction force is received by the upper and lower fixing parts to efficiently drill the hole. Can be performed.

  According to the temporary work facility and the fixture used therefor according to the present invention, the work fixture body such as a scaffold or a drilling machine can be securely placed at a desired position by embedding and fixing the lower fixing portion at a desired position on the work surface. Can be installed. Moreover, when removing work equipment, while removing the work equipment main body, the upper fixing part connected detachably can be removed from a lower fixing part, and a fixture can be easily removed from a work surface.

  According to the first and second drilling methods, drilling is carried out while reliably receiving the reaction force of the drilling machine, not only at the center of the slope but also at the outer edge of the slope. Is possible. Moreover, since the lower fixing part can be used also as a box-pipe, and the upper fixing part can be used repeatedly, an increase in the number of parts and an increase in construction cost due to the provision of fixing tools can be suppressed. Further, since the reaction force is received through the fixture having the insertion hole through which the drilling tool is inserted, the lever length of the connecting means for connecting the drilling machine and the fixture is shortened, so that the drilling machine and fixture Therefore, it is possible to prevent a large bending moment from acting on the drilling machine, and it is possible to prevent the drilling machine and the fixture from being damaged. Furthermore, by connecting the drilling machine to the fixture, the drilling tool can be easily aligned concentrically with the insertion hole of the fixture, so that the positioning operation of the drilling machine is facilitated.

  According to the third drilling method, the reaction force of the drilling machine can be reliably utilized by effectively utilizing the reaction force receiving member used for stabilizing the ground even in the ground where no frame is formed. It becomes possible to drill a hole while receiving it. In addition, since the reaction force is received through a fixture having an insertion hole through which the drilling tool is inserted, the lever length of the connecting means for connecting the drilling machine and the fixture is shortened, so that the drilling machine and fixture Therefore, it is possible to prevent a large bending moment from acting on the drilling machine, and it is possible to prevent the drilling machine and the fixture from being damaged. Furthermore, by connecting the drilling machine to the fixture, the drilling tool can be easily aligned concentrically with the insertion hole of the fixture, so that the positioning operation of the drilling machine is facilitated.

Side view of temporary work equipment Sectional view around the fixture in FIG. Sectional view taken along line III-III in Fig. 2 when the cylinder is driven 3 equivalent diagram when the cylinder is not driven V-V cross-sectional view of Fig. 1 Longitudinal section around the lower fixed part of the frame before spraying concrete Longitudinal cross section near the frame fixture after spraying concrete FIG. 2 is a view corresponding to FIG. IX-IX sectional view of FIG. XX sectional view of FIG. Exploded sectional view of a fixture with other configuration Side view of another connecting means for connecting the fixture Longitudinal section around the lower fixing part of the frame just before mounting the upper fixing part of the fixture Longitudinal section around the fixture of the frame with the upper fixture of the fixture attached Explanatory drawing of the connection method of the fixture and guide cell Longitudinal section around the fixture of the frame when a single pipe is fixed to the fixture Cross-sectional view of the frame around the fixture when a single pipe is fixed to the fixture Explanatory drawing of fixtures of other configurations Explanatory drawing of fixtures of other configurations Exploded perspective view of a fixture for rock bolt construction equipment in other configurations Longitudinal sectional view of the fixture and the connection means of the rock bolt construction equipment using the fixture XXII-XXII sectional view of Fig. 21 XXIII-XXIII line cross section of Fig. 21 (A) (B) is explanatory drawing of the usage method of the connection means of the same rock bolt construction equipment. (A) is explanatory drawing of the usage method of the connection means of the rock bolt construction equipment, (B) is explanatory drawing of the hole drilling method of the rock bolt construction equipment Front view of reaction force receiving member installed in natural ground XXVII-XXVII sectional view of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the present embodiment, the present invention is applied to a temporary work facility for constructing a lock bolt on a frame.

  As shown in FIG. 1, a rock bolt construction facility 1 as a temporary work facility is provided in a lock bolt construction machine 10 as a drilling machine supported by a wire 3 of a crane 2 and a frame 4 as a work surface. A fixture 25 and a connecting means 30 that is attached to the distal end portion of the rock bolt construction machine 10 and couples the distal end portion of the lock bolt construction machine 10 to the fixture 25 are provided. The slope frame 4 is a well-known grid-like slope structure composed of a vertical frame 4a and a horizontal frame 4b constructed on the slope 5, and the fixture 25 is placed at the intersection of the vertical frame 4a and the horizontal frame 4b. The rock bolt construction machine 10 is constructed together with the method frame 4, and the rock bolt is constructed by forming the excavation hole 7 at the intersection of the method frame 4.

  The rock bolt construction machine 10 has a known configuration including a drill head 11 and a guide cell 12 that supports the drill head 11 so as to be able to advance and retract.

  The guide cell 12 will be described. As shown in FIG. 1, an elongate guide cell main body 13 that is suspended by the wire 3 of the crane 2 is provided, and a carrier 14 extends along the guide cell main body 13 on the guide cell main body 13. It is provided movably. Driving means 15 for driving the carrier 14 along the guide cell main body 13 is provided at the rear end portion of the guide cell main body 13, and the drill head 11 is mounted on the carrier 14 and attached to the guide cell main body 13 together with the carrier 14. 1 is supported so as to be movable over a forward position shown by a virtual line and a backward position shown by a solid line in FIG.

  A positioner 16 of an inner rod 19 that can move between an approach position and a separation position with respect to the guide cell body 13 is provided in the middle of the guide cell body 13, and when excavating a single pipe, the positioner 16 is moved to the separation position. It is configured to be able to move to the approaching position during heavy pipe excavation. However, if only single pipe excavation is performed, the positioner 16 can be omitted.

  A rod clamp 17 and a rod breaker 18 are provided at the front and rear ends of the guide cell body 13. The outer rod 20 is clamped by the rod clamp 17, and the outer rod 20 is separated from the drill head 11 by the rod breaker 18. It is configured to be able to.

  The drill head 11 has a well-known configuration in which the inner rod 19 and the outer rod 20 having rock drill bits 19a and 20a attached to the distal end portion are rotated, hammered and reciprocated to drill the drill hole 7 on the slope 5. Is.

  As shown in FIGS. 1 to 5, the fixing tool 25 is detachably connected to the lower fixing portion 27 embedded in and fixed to the frame 4 as a work surface, and is detachably connected to the lower frame 27. And an upper fixing portion 26 projecting toward the top.

  The upper fixing part 26 and the lower fixing part 27 can be made of any material such as a synthetic resin material or a metal material. The upper fixing part 26 and the lower fixing part 27 can be made of the same material, but can also be made of different materials. Further, the lower fixing part 27 is embedded in the frame 4 and the upper fixing part 26 is removed from the lower fixing part 27 and repeatedly used. Therefore, the lower fixing part 27 is made of a synthetic resin material, and the upper fixing part 26 is It is also preferable to comprise a synthetic resin material or a metal material.

  The upper fixing portion 26 and the lower fixing portion 27 are formed in a substantially cylindrical shape, and insertion holes 26a and 27a through which the outer rod 20 can be inserted are formed in both the fixing portions 26 and 27, so that the upper and lower fixing portions can be freely attached and detached. For connection, a male screw 26 b is formed at the lower end portion of the upper fixing portion 26, and a female screw 27 b is formed within the upper end portion of the lower fixing portion 27.

  However, both the fixing portions 26 and 27 are not necessarily configured in a substantially cylindrical shape as long as they can be detachably connected, and may be formed in a polygonal cross section. In addition, as the connection structure of both the fixing portions 26 and 27, a connection structure using the male screw 26b and the female screw 27b can be manufactured at low cost, and it is preferable to make the both fixing portions 26 and 27 as thin as possible. Any connection structure other than a screw structure may be employed as long as the connection structure can be connected so as not to be separated by a tensile force with respect to the direction. For example, one or a plurality of L-shaped grooves are formed in the upper end portion of the lower fixing portion 27, and protrusions that can be engaged with the L-shaped grooves on the outer peripheral surface of the lower end portion of the upper fixing portion 26. Forming the lower end of the upper fixing portion 26 into the upper end portion of the lower fixing portion 27, inserting the protrusion into the groove, and then rotating the fixed angle to engage the protrusion with the groove, It is also possible to adopt a configuration in which 27 is connected.

  As shown in FIGS. 2 and 5, a plurality of protrusions 27 d are formed to protrude outwardly at intervals in the circumferential direction at a middle portion in the length direction of the cylindrical body portion 27 c of the lower fixing portion 27. The protrusion 27d is embedded in the frame 4 so that the pull-out strength of the lower fixing portion 27 is increased. However, instead of the protrusion 27d, a spiral male screw portion 27Da as shown in FIG. 19 may be formed. In addition, the lower fixing portion 27 is formed of an existing corrugated synthetic resin tube having an outer peripheral surface such as a spiral shape or an accordion shape, and an increase in the manufacturing cost of the lower fixing portion 27 is suppressed. It can also be configured to increase the pull-out strength.

  A flange-like flange portion 26d protruding outward is formed at the upper end portion of the cylindrical body portion 26c of the upper fixing portion 26, and the reaction force at the time of drilling is measured via the fixing tool 25 by this flange portion 26d. The frame 4 can be transmitted.

  The connecting means 30 will be described. As shown in FIGS. 1 to 4, a casing 31 is fixed to the surface of the housing 17 a of the rod clamp 17 on the side of the normal frame 4, and the casing 31 is inserted through the outer rod 20. An insertion hole 32 is formed, and the casing 31 is fixed to the housing 17a so that the case side insertion hole 32 communicates with a housing side insertion hole 17b formed in the housing 17a. In the casing 31, an accommodation concave portion 33 that can be attached to the upper half portion of the upper fixing portion 26 and that is open on the side of the normal frame 4 is formed continuously to the case side insertion hole 32. The casing 31 is provided with a pair of cylinders 34 facing each other with the accommodating recess 33 interposed therebetween, and a claw member capable of sandwiching the body portion 26c of the upper fixing portion 26 at the tip of the piston rod 34a of the cylinder 34. 35 are provided. As shown in FIG. 4, the distal end portion of the guide cell 12 is fitted with the upper fixing portion 26 in the housing recess 33 of the casing 31 as shown in FIG. In this state, the cylinder 34 is driven, and the body portion 26c of the upper fixing portion 26 is sandwiched between the two claw members 35 as shown in FIG. At the same time, the claw member 35 abuts against the surface of the flange portion 26d on the side of the normal frame 4 so that the movement in the direction away from the normal frame 4 is restricted. However, the connecting means 30 may be of any configuration as long as it can be attached to and detached from the fixture 25 and can be restricted from moving in a direction away from the frame 4.

  The drilling method by the rock bolt construction facility 1 will be described. First, in order to provide the lower fixing portion 27 in an embedded state with respect to the method frame 4, as shown in FIG. The lower fixing portion 27 whose upper opening is closed with the sealing film 36 when the mold made of the reinforcing bar 6 and the mesh material of the frame 4 is constructed before and the horizontal frame 4a of the frame 4 It is installed at a position corresponding to the intersection with the frame 4b.

  Next, concrete or the like is sprayed along the reinforcing bars 6 and the mold to construct the method frame 4, and the lower fixing part 27 is embedded and fixed to the slope structure. At this time, the frame 4 is constructed so that the upper surface of the lower fixing portion 27 is flush with the upper surface of the frame 4.

  Next, after the concrete or the like is cured, the sealing film 36 in the lower fixing portion 27 at the position where the excavation hole 7 for loading the lock bolt is to be peeled is peeled off to open the lower fixing portion 27, and then FIG. As shown, the upper fixing part 26 is connected to the lower fixing part 27.

  Next, as shown in FIG. 1, the rock bolt construction machine 10 is suspended by the crane 2, and the tip of the lock bolt construction machine 10 is moved to the upper fixing portion 26 at the drilling position. With the angle and the position relative to the slope 5 adjusted, as shown in FIG. 2, the upper fixing portion 26 is inserted into the housing recess 33 of the casing 31 provided at the tip of the guide cell 12, and then as shown in FIG. Then, the cylinder 34 is driven, and the body part 26 c of the upper fixing part 26 is clamped by the claw member 35, and the distal end part of the lock bolt construction machine 10 is positioned and fixed with respect to the slope 5.

  Next, the drill head 11 is advanced, and the outer rod 20 and the inner rod 19 set in the guide cell 12 are inserted into the insertion holes 26a and 27a of the fixture 25 as shown by phantom lines in FIG. The excavation hole 7 is drilled in the slope 5 by the rod 20 and the inner rod 19. A reaction force in the direction away from the slope 5 acts on the guide cell 12 at the time of drilling. The reaction force at the time of drilling is such that the claw member 35 comes into contact with the flange portion 26d of the upper fixing portion 26. Thus, since the frame is received by the frame 4 via the fixture 25, the holes can be smoothly drilled.

  After forming the excavation hole 7 having the required depth in this manner, the outer rod 20 is clamped by the rod clamp 17 and the outer rod 20 is clamped by the rod breaker 18 in the same manner as the conventional double pipe excavation. After separating from the drill head 11, the inner rod 19 is retracted together with the drill head 11, the inner rod 19 is removed from the outer rod 20, and then a lock bolt is loaded into the outer rod 20 and filled with cement milk. Then, the outer rod 20 is pulled out and a lock bolt is applied.

  In this rock bolt construction facility 1 and a drilling method using the same, a fixture 25 is constructed at the lock bolt construction position of the method frame 4, and the fixture 25 is used to drill holes that act on the guide cell 12. Therefore, even at the outer edge of the frame 4 and the like, it is possible to reliably install the fixture 25 and receive the reaction force during drilling acting on the lock bolt construction machine 10. Become. Moreover, since the lower fixing part 27 can be used as a box-pipe and the upper fixing part 26 can be used repeatedly, an increase in the number of parts and an increase in construction cost due to the provision of the fixing tool 25 can be suppressed. Furthermore, since the reaction force is received through the fixture 25 having the insertion holes 26a and 27a through which the outer rod 20 is inserted, it is possible to prevent a bending moment from acting on the lock bolt construction machine 10 and the fixture 25. Breakage of the lock bolt construction machine 10 and the fixture 25 due to the bending moment acting can be effectively prevented. Further, by connecting the lock bolt construction machine 10 to the fixture 25, the outer rod 20 can be easily and concentrically aligned with the insertion holes 26a, 27a of the fixture 25. 10 positioning work becomes easy. Since the lower fixing portion 27 is embedded in the method frame 4 when the method frame 4 is applied, the lower fixing portion 27 can be easily installed and the bonding strength between the lower fixing portion 27 and the method frame 4 is sufficiently secured. it can.

  Next, another embodiment in which the configuration of the fixture 25 and / or the connecting means 30 is partially changed will be described. The same members as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

(1) Instead of the fixture 25, as in the fixture 25B shown in FIG. 11, a hollow corrugated synthetic resin tube having an upper fixing portion 26B having a spiral portion 26Ba and a protrusion 27Ba that can be screwed to the spiral portion 26Ba. A device provided with a lower fixing portion 27B made of

(2) Instead of the fixture 25, an upper fixing portion 26E is configured so as to be fitted in the lower fixing portion 27E as in the fixing device 25E shown in FIGS. 20 to 23, and on the back side of the lower fixing portion 27E. One to a plurality of engaging protrusions 27Ea projecting inward are formed, and one end of the upper fixing portion 26E is engaged with the engaging protrusion 27Ea so as to correspond to the engaging protrusion 27Ea. A plurality of locking holes 26Ea, a guide portion 26Eb extending in the axial direction from the distal end of the upper fixing portion 26E to the proximal end side, and a locking portion 26Ec extending in the circumferential direction from the back end portion of the guide portion 26Eb, It is also possible to employ a structure in which a locking hole 26Ea having an inclined guide surface 26Ed that guides the guide portion 26Eb in the circumferential direction toward the engagement protrusion 27Ea by contact with the protrusion 27Ea. However, the inclined guide surface 26Ed may be omitted, and the locking hole may be configured by the guide portion 26Eb and the locking portion 26Ec.

  In this fixture 25E, when the upper fixing portion 26E and the lower fixing portion 27E are connected, as shown in FIG. 21, the center line of the upper fixing portion 26E and the center line of the lower fixing portion 27E are matched. After the upper fixing portion 26E is moved, the upper fixing portion 26E is inserted into the lower fixing portion 27E and the engaging protrusion 27Ea is inserted into the guide portion 26Eb as shown in FIG. At this time, when the positions of the engaging protrusions 27Ea and the guides 26Eb in the circumferential direction of the fixture 25E match, the engaging protrusions 27Ea can be simply inserted into the lower fixing part 27E. Is inserted to the back of the guide portion 26Eb. However, as shown in FIG. 24A, in a different case, the engagement protrusion 27Ea contacts the inclined guide surface 26Ed. The upper fixing portion 26E is manually rotated while moving the engagement protrusion 27Ea along the inclined guide surface 26Ed in the direction indicated by the arrow A until the direction position matches the circumferential position of the guide portion 26Eb. Thus, the circumferential positions of both can be easily matched. Then, as shown in FIG. 24 (B), the engaging protrusion 27Ea is inserted to the back of the guide portion 26Eb, and then, as shown in FIG. 25 (A), the engaging protrusion 27Ea is engaged with the locking portion 26Ec. The upper fixing portion 26E is rotated so as to be engaged with the inner portion of the upper portion, and the upper fixing portion 26E is connected to the lower fixing portion 27E. Then, as shown in FIG. While striking the slope 5 with the bit 19 a and the rock drilling bit 20 a of the outer rod 20, both rods 19, 20 are rotated to drill the excavation hole 7 in the slope 5.

  In this fixing tool 25E, when the upper and lower fixing portions 26E and 27E are connected, it is not necessary to rotate the upper fixing portion 26E many times, so that both can be easily connected.

(3) Instead of the connecting means 30, a connecting means 30A as shown in FIGS. 8 to 10 may be employed. This connecting means 30A uses a casing 31A in which a housing recess 33A that can be mounted from the upper side with respect to the upper half of the upper fixing portion 26 is used in place of the casing 31, and the surface of the casing 31A on the side of the frame 4 is legal. A restriction protrusion 40 is formed to restrict the movement of the flange portion 26d in a direction away from the frame 4, and a locking bolt 41 that can be detachably attached across the housing recess 33A is provided at the lower portion of the casing 31. Will be used. In this case, the casing 31 is mounted on the upper fixing portion 26 from the upper side, the upper fixing portion 26 is mounted in the accommodating recess 33A, and in this state, the locking bolt 41 is mounted on the casing 31 and the nut 42 is fastened. As a result, the distal end portion of the guide cell 12 is positioned on the modulus frame 4 via the fixture 25, and the movement of the distal end portion of the guide cell 12 in the direction away from the modulus frame 4 is controlled by the regulation projection 40. The frame 4 side surface can be regulated by contacting the flange portion 26d.

(4) It can replace with the connection means 30 and can also use the connection means 30E as shown in FIGS. The connecting means 30E is provided with a support plate 60 that is substantially orthogonal to the length direction of the guide cell 12 on the front side of the guide cell 12, and an opening / closing plate 62 is shown in FIG. An insertion hole 63 is provided between the support plate 60 and the opening / closing plate 62 so that the middle portion of the upper fixing portion 26E can be inserted between the support plate 60 and the opening / closing plate 62 in a closed position and a phantom line. It is configured.

  When the upper fixing portion 26E is held by the connecting means 30E, the opening / closing plate 62 is rotated to the release position, and the upper fixing portion 26E is fitted to the support plate 60. In this state, the opening / closing plate 62 is moved to an imaginary line. Is rotated to the closed position shown in the figure, and an intermediate portion of the upper fixing portion 26E is inserted into the insertion hole 63 formed by the support plate 60 and the opening / closing plate 62, and the fixing pin 64 is opened / closed with the support plate 60 in this state. The opening / closing plate 62 is held in the closed position by being mounted over the plate 62. Further, with the upper fixing portion 26E being held by the connecting means 30E, the flange portion 26d of the upper fixing portion 26E is brought into contact with the opening / closing plate 62 and the support plate 60, whereby the upper fixing portion 26E is removed from the connecting means 30E. It is comprised so that the cutting reaction force to the extraction direction can be received. The upper fixing portions 26 and 26B in the fixing tools 25 and 25B can be connected to the guide cell 12 using the connecting means 30E in the same manner as the upper fixing portion 26E.

(5) Instead of the fixing tool 25 and the connecting means 30, a fixing tool 25B and a connecting means 30B having the following configuration may be employed.

  Specifically, instead of the fixture 25, as shown in FIG. 11, a pair of left and right locking rods 45 projecting left and right are provided on the upper fixing portion 26B of the fixture 25B described above. Will be adopted. The locking rod 45 is fixed by screwing and screwing the screw portion 45a to the upper fixing portion 26B, but it can also be fixed by other fixing structures. In addition, regarding the connection structure between the upper fixing portion and the lower fixing portion, the same configuration as the fixing device 25 or the fixing device 25E can be adopted, or any other configuration can be adopted. You can also.

  Further, in place of the connecting means 30, as shown in FIG. 12, a casing 31B having a case-side insertion hole 32 formed in a penetrating manner is provided, and the casing 31B is fixed to the front end surface of the housing 17a of the rod clamp 17, and the casing Adopting connecting means 30B in which shaft members 46 are provided on both left and right sides of 31B so as to protrude sideways, and hook members 47 that can be engaged with and disengaged from the locking rod 45 are rotatably provided on both shaft members 46, respectively. become.

  When the excavation hole 7 is drilled by the rock bolt construction equipment provided with the fixing tool 25B and the connecting means 30B, the lower fixing portion 27B is first embedded in the method frame 4 so as to be embedded. Similarly, the lower part where the upper surface opening is closed with the sealing film 36 before the concrete frame constituting the method frame 4 is sprayed and when the form frame made of the reinforcing bar 6 and the net material of the method frame 4 is constructed. The fixing portion 27B is installed at a position corresponding to the intersection of the vertical frame 4a and the horizontal frame 4b of the modulus frame 4.

  Next, as shown in FIG. 13, concrete or the like is sprayed along the reinforcing bars 6 and the formwork to construct the method frame 4, and the lower fixing portion 27B is embedded and fixed to the slope structure. At this time, the method frame 4 is constructed so that the upper surface of the lower fixing portion 27B is flush with the upper surface of the method frame 4.

  Next, after hardening the concrete or the like, the sealing film 36 in the lower fixing portion 27B at the position where the excavation hole 7 for loading the lock bolt is to be peeled is peeled off to open the lower fixing portion 27B, and then FIG. As shown in FIG. 5, the upper fixing portion 26B is screwed into and connected to the lower fixing portion 27B.

  Next, as in the above embodiment, the rock bolt construction machine 10 is suspended by the crane 2 and the tip of the lock bolt construction machine 10 is moved to the upper fixing portion 26B at the drilling position. As shown in FIG. 15, the left and right hook members 47 provided at the distal end portion of the guide cell 12 are rotated around the shaft member 46, and the hook member 47 is adjusted. Is hooked on the right and left locking rods 45 of the upper fixing portion 26B, and the distal end portion of the lock bolt construction machine 10 is positioned and fixed with respect to the slope 5. The locking rod 45 can be hooked manually, or can be rotated by providing a hydraulic cylinder or the like for rotating the locking rod 45 in the connecting means 30B.

  Next, the drill head 11 is advanced, and the drill hole 7 is formed in the slope 5 as in the above embodiment. At the time of drilling, a reaction force in the direction away from the slope 5 acts on the guide cell 12, but the reaction force at the time of drilling is transmitted to the locking rod 45 of the upper fixing portion 26B via the hook member 47. Since it is received by the frame 4 via the fixture 25B, the holes can be smoothly drilled.

  When the fixture 25B having the above-described configuration is provided, the lower fixing portion 27B can be configured using the existing corrugated synthetic resin tube as it is, so that the manufacturing cost of the fixture 25B can be reduced. Further, when the connecting means 30B having the above-described configuration is provided, the tip portion of the guide cell 12 can be easily and reliably formed by the connecting means having the hook member 47 and the locking rod 45 which can be manufactured at low cost. Can be positioned and fixed to the fixture 25B. Further, when the fixture 25B is provided, as shown in FIGS. 16 and 17, a single tube clamp 48 is fixed to the locking rod 45, and a single tube 49 constituting a scaffold or the like is fixed to the single tube clamp 48. It is also possible to fix and construct scaffolding etc.

  In the embodiment, the guide cell 12 is suspended from the wire 3 of the crane 2 to form the excavation hole 7 for rock bolt construction, and the present invention is applied to the rock bolt construction machine 10 for constructing the lock bolt. However, it is also possible to apply the present invention to a lock bolt construction machine that constructs a lock bolt by supporting the guide cell 12 at the boom tip of a working machine such as a backhoe. In addition, the present invention can be applied to a drilling machine other than the rock bolt construction machine 10, and fixing tools 25, 25B, and 25E are used as fixing points for installing temporary facilities such as scaffolding other than the drilling machine. It can also be used.

  Moreover, although the lower fixing parts 27 and 27B were constructed in the drilling position of the method frame 4, the lower fixing parts 27 and 27B were buried and installed in positions other than the drilling position, and the upper fixing part was installed in the lower fixing parts 27 and 27B. 26 and 26B can be connected and used as a fixing point for installing temporary equipment such as a drilling machine or a scaffold. Specifically, when using the fixing tool 25B, as described above, the single tube clamp 48 is fixed to the locking rod 45, and the single tube clamp 48 is used to hold the single tube 49 constituting the scaffold. A scaffold can be constructed. Further, in the fixture 25, for example, as in the fixture 25C shown in FIG. 18, a bracket 51 having a locking hole 50 for fixing a wire via a shackle or the like is provided instead of the upper fixing portion 26. Using the upper fixing part 26B, it is possible to support a drilling machine or a scaffold via a wire or the like.

  Furthermore, although the lower fixing portion is embedded and fixed to the slope structure including the slope frame 4, the lower fixing portion can also be embedded and fixed to a slope other than the slope frame 4, a slope in a natural ground, a substantially horizontal plane, or the like. For example, as in a fixture 25D shown in FIG. 12, instead of the lower fixing portion 27, a lower fixing having a cylindrical body portion 27c and a helical male screw portion 27Da formed on the outer peripheral surface of the body portion 27c. Using the portion 27D, a hole 55 having a diameter substantially the same as that of the body portion 27c is formed in advance on a work surface such as a slope 5 or a natural ground, and the lower fixing portion 27D is screwed into the hole 55 so that the lower fixing portion 27D is It can also be embedded and fixed on a work surface such as a slope 5.

  Moreover, a working surface can be comprised by a slope or a natural ground, and the reaction force receiving member for stabilizing it, and a lower fixing part can also be embed | buriedly fixed to the reaction force receiving member. Specifically, as shown in FIGS. 26 and 27, as the reaction force receiving member 70, a pair of left and right elongated rod-shaped receiving members 71 and a connecting plate 72 that connects the left and right receiving members 71 are provided and connected. A plate 72 having a through hole 73, an upper end fitted into the through hole 73, and the lower fixing portion 27E fixed by welding or the like can be employed. In this case, the reaction force at the time of drilling the natural ground 75 can be received by the weight of the reaction force receiving member 70. Further, the reaction force receiving member 70 is installed in the natural ground 75 as it is after drilling the natural ground 75, and is connected and fixed to the end of the lock bolt constructed in the natural ground 75. It can be used as 75 stabilization structures. In addition, as the reaction force receiving member 70, as long as the lower fixing portion is fixed at the drilling position, a well-known configuration other than those described above, for example, a reaction force receiving member formed in a cross-shaped shape or a cross-beam shape in plan view is used. It is also possible to adopt.

  The embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and it goes without saying that the configuration can be changed without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Rock bolt construction equipment 2 Crane 3 Wire 4 Method frame 4a Vertical frame 4b Horizontal frame 5 Slope 6 Rebar 7 Drilling hole 10 Rock bolt construction machine 11 Drill head 12 Guide cell 13 Guide cell main body 14 Carrier 15 Driving means 16 Positioner 17 Rod Clamp 17a Housing 17b Housing-side insertion hole 18 Rod breaker 19 Inner rod 19a Rock drilling bit 20 Outer rod 20a Rock drilling bit 25 Fixing tool 26 Upper fixing part 26a Insertion hole 26b Male screw 26c Body part 26d Flange part 27 Lower fixing part 27a Insertion Hole 27b Female thread 27c Body part 27d Protrusion 30 Connection means 31 Casing 32 Case side insertion hole 33 Housing recess 34 Cylinder 34a Piston rod 35 Claw member 36 Sealing film 30A Connection means 31A Casing 33A Housing recess 40 Control protrusion 41 Locking bolt 25B Fixing tool 26B Upper fixing part 26Ba Spiral part 27B Lower fixing part 27Ba Projection 30B Connection means 31B Casing 45 Locking rod 45a Screw part 46 Shaft member 47 Hook member 48 Single pipe clamp 49 Single pipe 25C Fixing tool 50 Locking hole 51 Bracket 25D Fixing tool 27D Lower fixing part 27Da Male thread part 55 Hole 25E Fixing tool 26E Upper fixing part 26Ea Locking hole 26Eb Guide part 26Ec Locking part 26Ed Inclined guide surface 27E Lower fixing part 27Ea Engagement Projection 30E Connection means 60 Support plate 61 Support pin 62 Opening / closing plate 63 Insertion hole 64 Fixing pin 70 Reaction force receiving member 71 Reception member 72 Connection plate 73 Through hole 75 Ground

Claims (21)

A temporary work facility comprising a work equipment main body arranged on a work surface, and a fixture for fixing the work equipment main body to the work surface,
The fixture includes a lower fixing portion that is embedded and fixed to the work surface, and an upper fixing portion that is detachably connected to the lower fixing portion and protrudes from the work surface to the outside.
Temporary work equipment characterized by that.   The working equipment body is a hole drilling machine, and an insertion hole through which a drilling tool is inserted is formed in the fixture, and a reaction force at the time of drilling by the drilling machine is received by the work surface via the fixture. The temporary work facility according to claim 1, which is made possible.   The temporary work facility according to claim 1 or 2, wherein an engagement protrusion that protrudes outward and engages with the work surface is formed on a side surface of the lower fixing portion.   The temporary work facility according to any one of claims 1 to 3, wherein a female screw is formed on one of the lower fixing portion and the upper fixing portion, and a male screw that is detachably engaged with the female screw is formed on the other.   The upper fixing portion is configured to be fitted into the lower fixing portion, and an engaging protrusion projecting inwardly is formed on the lower fixing portion, and the upper fixing portion is axially extended from the distal end to the proximal end side. A locking hole detachably engageable with the engaging protrusion is formed, the guide hole extending in a circumferential direction and a locking portion extending in the circumferential direction from the back end of the guiding portion. Temporary work equipment described in the section.   The temporary work facility according to claim 5, wherein an inclined guide surface that guides the guide portion in the circumferential direction toward the engagement protrusion is formed on the upper fixing portion by contact with the engagement protrusion.   The temporary work facility according to any one of claims 1 to 6, wherein the lower fixing part is embedded and fixed to the work surface so that an upper end surface of the lower fixing part is substantially flush with the work surface. .   The work surface is composed of any one of a slope, a ground, a slope structure constructed on the slope, a slope and a reaction force receiving member installed on the slope, a ground and a reaction force receiving member installed on the slope. The temporary work facility according to any one of claims 1 to 7. A fixture for temporarily fixing the work equipment body to the work surface,
A lower fixing portion embedded and fixed to the work surface; and an upper fixing portion that is detachably connected to the lower fixing portion and protrudes from the work surface to the outside.
A fixture characterized by that.   The working equipment body is a hole drilling machine, and an insertion hole through which a drilling tool is inserted is formed in the fixture, and a reaction force at the time of drilling by the drilling machine is received by the work surface via the fixture. The fixing device according to claim 9, which is made possible.   The fixing tool according to claim 9 or 10, wherein an engaging protrusion that protrudes outward and engages with the work surface is formed on a side surface of the lower fixing portion.   The fixing tool according to any one of claims 9 to 11, wherein a female screw is formed on one of the lower fixing portion and the upper fixing portion, and a male screw is formed on the other so as to be detachably engaged with the female screw.   The upper fixing portion is configured to be fitted into the lower fixing portion, and an engaging protrusion projecting inwardly is formed on the lower fixing portion, and the upper fixing portion is axially extended from the distal end to the proximal end side. 12. A locking hole detachably engageable with the engaging protrusion, wherein the engaging protrusion has a guiding portion extending in a circumferential direction and a locking portion extending in a circumferential direction from a back end portion of the guiding portion. Fixing tool according to item.   The fixture according to claim 13, wherein an inclined guide surface that guides the guide portion in the circumferential direction toward the engagement protrusion is formed on the upper fixing portion by contact with the engagement protrusion.   The fixture according to any one of claims 9 to 14, wherein the lower fixing portion is embedded and fixed on the work surface such that an upper end surface of the lower fixing portion is substantially flush with the work surface.   The work surface is composed of any one of a slope, a ground, a slope structure constructed on the slope, a slope and a reaction force receiving member installed on the slope, a ground and a reaction force receiving member installed on the slope. The fixture according to any one of claims 9 to 15.   The lower fixing part is embedded and fixed on the work surface, and the upper fixing part is detachably connected to the lower fixing part, and then a drilling machine is connected to the upper fixing part, and the cutting machine acting on the drilling machine is connected. A drilling method comprising drilling a work surface through an insertion hole in the upper and lower fixing portions while receiving a reaction force at the time of drilling on the work surface via a fixture composed of upper and lower fixing portions.   Before the construction of the concrete that constitutes the slope structure as the work surface, the lower fixing part with the top opening closed is installed at the drilling position of the slope structure, and then the slope structure using concrete etc. In addition, the lower fixing part is embedded and fixed in the slope structure, and after the concrete is hardened, the lower fixing part is opened and the upper fixing part is detachably connected to the lower fixing part. Then, connecting a drilling machine to the upper fixed part, while receiving the reaction force at the time of drilling acting on the drilling machine with the slope structure through the fixture consisting of the upper and lower fixed parts, A drilling method, wherein a slope is drilled through an insertion hole in the upper and lower fixing portions.   A reaction force receiving member formed by embedding and fixing the lower fixing portion is installed on a slope or ground, and a working surface is formed by the slope or ground and the reaction force receiving member installed thereon, and then the lower fixing is performed. The upper fixing part is detachably connected to the upper part, and then a drilling machine is connected to the upper fixing part, and the reaction force acting on the drilling machine is controlled by the upper and lower fixing parts. A drilling method comprising drilling a natural ground through an insertion hole in the upper and lower fixing portions while receiving the reaction force via a reaction force receiving member.   The drilling method according to any one of claims 17 to 19, wherein the lower fixing portion is embedded and fixed to the work surface so that an upper end surface of the lower fixing portion is substantially flush with the work surface.   The drilling method according to any one of claims 17 to 20, wherein the drilling machine is suspended from a crane so that the position of the drilling machine can be switched, and the drilling operation is performed by the drilling machine in a suspended state by the crane.

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