Rock bolt installation method

Abstract

To provide a rock bolt installation method which has good construction efficiency, reduces the burden on workers, and leads to cost reduction. [Solution] A rock bolt installation method including: (1) an installation step of attaching a rock drill attachment (2) to a rail-mounted backhoe (3); (2) a connection step of connecting a reaction force equipment (4) to the base side of a guide cell (21); (3) an extension step of aligning the installation direction of the rock bolt (22) to a predetermined angle in the cross section of the installation point on the side wall inside the tunnel, and extending and adjusting the length of the pipe support (5) via the camber (7) to a position where the tip of the pipe support (5) contacts the side wall or the ground on the opposite side of the installation point; and (4) a drilling step of drilling a hole with the rock drill attachment (2) fixed by the reaction force equipment (4) and the rock bolt (22).

Description

[Technical Field]

[0001] The present invention relates to a rock bolt installation method suitable for repairing a single-track railway tunnel. [Background technology]

[0002] Single-track railway tunnels are typically about 4.5 to 5 meters wide, making them inaccessible to large machinery, and because the tracks are laid underground, conventionally, rock bolt installation was done by loading the construction machinery onto a dump truck or similar vehicle and traveling along the road, then transferring it to a road-rail dump truck at a railroad crossing or other location, and moving the tracks to the installation position inside the tunnel. At this time, scaffolding was assembled on top of the truck's loading platform, and workers climbed onto the scaffolding as a work platform, carrying out the work manually with a rock drill (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-207416 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the conventional rock bolt installation method described above, after moving a rail-mounted dump truck to the drilling location, depending on the height and direction of the drilling location, the rock drill is placed on a wheeled cart fixed to the rails, or on the bed of the rail-mounted dump truck, or scaffolding is reassembled and adjusted on top of the bed, the rail-mounted dump truck is secured to ensure footing so that the scaffolding does not move due to the reaction force of the installation work, and depending on the height, workers on a work platform atop the scaffolding must install the rock bolts with the rock drill. With this method, installing rock bolts in all directions on the side walls of a tunnel in the same location requires changing the height of the scaffolding and resetting the work platform each time depending on the angle and height of the installation.

[0005] Therefore, to improve work efficiency, a common method is to drive rock bolts into the sidewall in one direction at one location (one cross section within the tunnel), then move a rail-mounted dump truck to the next cross section while the scaffolding is still set up and drive rock bolts into the sidewall in the same direction. However, even with this method, after completing the same direction of concrete pouring at multiple cross sections, the equipment must be reconfigured for a different direction, and the same procedure must be repeated for all cross sections. While this method improves work efficiency compared to pouring concrete in all directions at the same location, it still requires a lot of time and effort for the complicated scaffolding reassembly and movement work in addition to the concrete pouring itself, resulting in high costs.

[0006] Furthermore, drilling work is performed manually using a heavy hand-held rock drill, and requires tedious scaffolding reassembly and moving work. This means that only a limited number of rock bolts can be installed in a given period, which results in a long construction period, and the need for many work days also increases the cost of security personnel. Furthermore, drilling work done manually also increases labor costs. Furthermore, hand-held rock drills have limitations on their drilling power, resulting in slow drilling speeds and poor construction efficiency depending on the hardness of the rock.

[0007] Furthermore, drilling work using heavy rock drills by hand requires laborious work accompanied by vibrations, necessitating careful work management, such as limiting working hours. There is also the problem that workers are at risk of developing illnesses due to vibration disorders caused by engaging in such work. Furthermore, drilling work requires skilled techniques, which creates problems such as the aging of skilled technicians and a labor shortage.

[0008] The present invention has been made in consideration of these problems, and aims to provide a rock bolt installation method that is efficient in construction, reduces the burden on workers, and leads to cost reduction. [Means for solving the problem]

[0009] A first aspect of the present invention is a rock drill attachment including a guide cell, a self-drilling rock bolt provided parallel to the guide cell, and a drifter provided on the base side of the rock bolt. An attachment step of attaching the rock drill attachment to a rail-mounted backhoe; a connecting step of connecting a reaction force facility including a pipe support and a mounting bracket that connects the pipe support and the guide cell to the base side of the guide cell; An extension step in which the driving direction of the rock bolt is adjusted to a predetermined angle in the cross section of the driving point of the side wall in the tunnel, and the length of the pipe support is extended and adjusted via a camber to a position where the tip of the pipe support contacts the side wall or the ground on the opposite side of the driving point; a drilling step of drilling a hole with the rock drill attachment fixed by the reaction force equipment and the rock bolt; The present invention provides a rock bolt installation method comprising the steps of:

[0010] According to the first aspect of the present invention, construction efficiency is high, the burden on workers can be reduced, and costs can also be reduced.

[0011] Furthermore, a drilling rod may be used instead of the lock bolt from the mounting step to the drilling step.

[0012] It is also preferable to further include a fixing step of fixing the rock bolt in the drilled hole.

[0013] Furthermore, without changing the position of the rail-road backhoe, It is preferable to shorten the length of the pipe support, change the drilling direction of the rock bolts at a predetermined angle on the same cross section, and then repeat the extension step, drilling step, and fixing step to drive rock bolts into multiple driving positions on the same cross section, thereby further improving construction efficiency.

[0014] In addition, a second aspect of the present invention is a rock drill attachment comprising: a guide cell; a rock bolt or a drill rod provided parallel to the guide cell; and a drifter provided on the base side of the rock bolt or the drill rod; A rail-mounted backhoe to which the rock drill attachment is detachably attached; a reaction force device attached to the rock drill attachment; Equipped with The reaction force facility is A pipe support that can be adjusted for extension and contraction by inserting the base end of an insertion pipe with pin holes at regular intervals and a support plate at the tip into a hollow waist pipe with a base plate at one end and an adjustment male screw at the other end, and then inserting support pins into the pin holes to fix it at any length; a mounting bracket having a hole on one side for bolting the base plate and a hole on the other side integrated with the one side via a rib for bolting a base side of the guide cell; The device is provided with: The present invention provides a rock bolt driving machine characterized in that the reaction force equipment is detachably attached to the rock drill attachment inside a single-track railway tunnel. [Effects of the Invention]

[0015] According to the present invention, construction efficiency is improved, the burden on workers can be reduced, and costs can be reduced. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a structural diagram of a rock bolt driving machine that performs the rock bolt driving method of Example 1 of the present invention. [Figure 2] FIG. 2 is an explanatory diagram (1) of the main parts of the rock bolt driving machine shown in FIG. 1. [Figure 3] FIG. 3 is an explanatory diagram (2) of the main parts of the rock bolt driving machine shown in FIG. 2. [Figure 4] FIG. 3 is a structural diagram of a pipe support for the rock bolting machine shown in FIG. 2. [Figure 5]3A, 3B, 3C, and 3D are diagrams illustrating the configuration of the mounting bracket of the rock bolt driving machine shown in FIG. 2; FIG. 3A is a left side view, FIG. 3B is a front view, FIG. 3C is a bottom view, and FIG. 3D is an explanatory diagram of the guide cell side plate. [Figure 6] FIG. 1 is a construction drawing of a rock bolt installation method according to a first embodiment of the present invention. [Figure 7] FIG. 1 is a flow chart showing the construction procedure of the rock bolt driving method according to the first embodiment of the present invention. [Figure 8] 1A, 1B, 2B, and 3C are explanatory diagrams showing the construction procedure of the rock bolt driving method according to the first embodiment of the present invention; [Figure 9] FIG. 2 is an explanatory diagram of the locations where rock bolts are installed using the rock bolt installation method of Example 1 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] Below, the rock bolt installation method of the present invention and the rock bolt installation machine used therein will be specifically explained using examples with reference to the attached drawings to illustrate preferred embodiments of the present invention, but the present invention is not limited to these. [Example]

[0018] {composition} FIG. 1 is a structural diagram of a rock bolt installation machine that performs a rock bolt installation method according to a first embodiment of the present invention. The rock bolt installation machine 1 that performs the rock bolt installation method of this embodiment is suitable for installing rock bolts in single-track railway tunnels. The rock bolt installation machine 1 includes a rock drill attachment 2 that includes a guide cell 21, a rock bolt 22 arranged parallel to the guide cell 21, and a drifter 23 attached to the base of the rock bolt 22. The rock bolt installation machine 1 also includes a rail-mounted backhoe 3 to which the rock drill attachment 2 is detachably attached, and a reaction force system 4 that is attached to the rock drill attachment 2. The reaction force system 4 includes a pipe support 5 and a mounting bracket 6. The rail-mounted backhoe 3 uses crawlers when traveling on roads and lowers its iron wheels 31 when traveling within railroad tracks.

[0019] The rock bolting machine 1 shown in Figure 1 is a detachable attachment type that includes a rock drill attachment 2 and a reaction force device 4 attached to a rail-mounted backhoe 3. In this embodiment, the rail-mounted backhoe 3 is driven by a crawler, allowing it to be transported by truck or self-propelled on roads. Therefore, the rock bolting machine 1 can enter the railroad tracks at a railroad crossing, move along the tracks, enter a tunnel, and move to the cross section where the rock bolts will be installed. After securing the rail-mounted backhoe 3 at each cross section, rock bolts can be installed around the entire circumference, and then the crawler can be used to move the backhoe 3 to the next cross section. The rail-mounted backhoe 3 is equipped with a rotation mechanism that can rotate the body 360 degrees horizontally, a boom attached to the body, and an arm connected to the tip of the boom. A shovel or other element can be attached to the tip of the arm via an attachment. The rock bolting machine 1 is equipped with a detachable rock drill attachment 2.

[0020] Figure 2 is an explanatory diagram (1) of the main components of the rock bolt installation machine shown in Figure 1. Figure 2(a) is a front view of the rock drill attachment 2 with the reaction force device 4 attached, and Figure 2(b) is an enlarged view of the attached portion. The rock drill attachment 2 includes a guide cell 21, a rock bolt 22 arranged parallel to the guide cell 21, and a drifter 23 attached to the base of the rock bolt 22. The rock drill attachment 2 has a mounting portion 24 for mounting to a rail-mounted backhoe 3. The drifter 23 is a hydraulic rock drill that drills holes in the rock on the side wall of the tunnel. The power of the drifter 23 is used to drive the drilling bit at the tip of the rock bolt 22 to drill holes in the rock on the side wall of the tunnel. In this embodiment, the rock bolt 22 is a self-drilling rock bolt. With the rock bolt 22 still in the hole, mortar is poured into the hole and secured with a washer. If the rock bolt is not a self-drilling rock bolt, a drilling rod is attached to the rock drill attachment 2 instead of the self-drilling rock bolt, and the hole is drilled. The drilling rod is then removed from the hole, mortar is injected into the hole, and the rock bolt is inserted into the hole to secure it in place and secured with a washer. In areas where the hole wall is prone to collapse, drilling with a self-drilling rock bolt is preferable. The guide cell 21 supports the rock bolt 22 on the rock drill attachment 2 and further supports its insertion into the rock. As shown in Figure 2, a reaction system 4 is attached to the base of the rock drill attachment 2. In Figure 2, some parts of the reaction system 4 are not shown. Figure 2(a) also shows the reaction device 4, which has a mounting bracket 6 and a pipe support 5 connected to the base of the rock drill attachment 2, and the camber 7 sandwiched between the tunnel T and the receiving plate 522 of the reaction system 4. Figure 2(b) shows that the mounting bracket 6 is secured by inserting and screwing a bolt 63 into the pipe support mounting bolt hole 61, which connects the base plate 513 at the end of the pipe support 5 to the mounting bracket 6, and another bolt 63 into the guide cell mounting bolt hole 62, which connects the base end of the guide cell 21 to the mounting bracket 6.

[0021] Figure 3 is an explanatory diagram (2) of the main parts of the rock bolt driving machine shown in Figure 2. Figure 3 is a bottom view of only the rock drill attachment 2 portion of the rock bolt driving machine shown in Figure 2. The rock bolt 22 is located directly below the guide cell 21. The rock drill attachment 2 is long and is suitable for driving the long rock bolt 22 into bedrock stably, accurately, and quickly without bending, and a drifter 23 is attached to the base of the guide cell 21, so there is no need to perform the drilling work manually, and holes can be drilled stably, accurately, and quickly even in hard bedrock.

[0022] Figure 4 is a structural diagram of the pipe support of the rock bolting machine shown in Figure 2. The reaction force device 4 includes a pipe support 5 and a mounting bracket 6. The pipe support 5 includes a belt pipe 51 and an insertion pipe 52. In Figure 4, part of the belt pipe 51 of the reaction force device 4 is not shown. The hollow belt pipe 51 has a base plate 513 at one end and an adjustment male thread 511 at the other end. The base end of the insertion pipe 52, which has pin holes 521 at regular intervals and a support plate 522 at its tip, is inserted into the hollow belt pipe 51, and support pins (not shown) are inserted into the pin holes 521 to fix it at any length, allowing for extension and contraction adjustment. The mounting bracket 6 also has holes on one side for bolting the base plate 513, and on the other side, which is integrated with the first side via a rib, has holes for bolting the base end of the guide cell 21. The support pin (not shown) and the handle 532 for movement are attached to a ring-shaped slide plate 53 which has an adjustment female screw 531 on the back side and slides while rotating by overlapping the adjustment female screw 531 with the groove of the adjustment male screw 511. The adjustment male screw 511 has a vertically long hole in the longitudinal direction, and the support pin (not shown) is inserted and fixed with the pin hole visible from inside the vertically long hole. With this mechanism, extension and contraction can be adjusted by inserting the pin to any length from the other end of the waist tube 51 and fixing it at any length.

[0023] Figure 5 shows the configuration of the mounting bracket for the rock bolting machine shown in Figure 2, with (a) a left side view, (b) a front view, (c) a bottom view, and (d) an explanatory diagram of the guide cell side plate. As shown in Figure 5, the mounting bracket 6 has a pipe support side plate 64 on one side with pipe support mounting bolt holes 61, which are holes for bolting the base plate 513 to the mounting bracket 6, and on the other side, which is integrated with the pipe support side plate 64 via a rib 66, has a guide cell side plate 65 with guide cell mounting bolt holes 62, which are holes for bolting the base side of the guide cell 21.

[0024] {Construction method} Figure 6 is a construction diagram of a rock bolt installation method according to a first embodiment of the present invention. Figure 6 shows the state of rock bolt installation work in a tunnel. Figure 6(a) is a plan view, and Figure 6(b) is a front view. The rock bolt installation machine 1 of this embodiment has a rock drill attachment 2 attached to a rail-mounted backhoe 3 that can travel on railroad tracks, and a reaction force device 4 attached to its base side (the side opposite to the side where holes are installed). When set in the installation position within tunnel T, it is fixed to tunnel T via a camber 7.

[0025] In this embodiment, during rock bolt installation, the pipe support 5 of the reaction device 4 behind the guide cell 21 of the rock bolt attachment 2 contacts the tunnel T with the camber 7 sandwiched between them, preventing the rail-mounted backhoe 3 from rotating. Furthermore, the driving force of the drifter is efficiently transmitted to the rock bolt without escaping, improving operability, increasing drilling speed, and increasing drilling accuracy. While manual drilling requires a drilling speed of approximately 30 to 40 minutes per meter, this embodiment achieves drilling at a speed of approximately 4 to 5 minutes per meter. This embodiment utilizes the advantages of a rail-mounted backhoe while overcoming its disadvantages, enabling efficient rock bolt installation. It also reduces drifter vibration, enabling stable drilling. Conventional manual drilling requires a pushing force as the rock bolt length increases, resulting in heavy labor. This reduces work efficiency due to the limited long working hours required to prevent occupational diseases such as vibration sickness. This also reduces drilling speed and increases safety costs due to the long working days. However, according to this embodiment, it is possible to prevent occupational diseases, save labor, improve work efficiency, reduce heavy labor, shorten the number of work days, and reduce security costs.

[0026] In the rock bolt installation method of Example 1, the rock bolt installation machine 1 is self-propelled along the road, traveling along the tracks from the railroad crossing and entering the tunnel. It is then moved to the cross-section where the rock bolt will be installed. In this example, the reaction force equipment 4 is attached before the rock bolt installation machine 1 is entered into the tunnel, but because the reaction force equipment 4 can be attached and detached by simply tightening the bolts, the rock bolt installation machine 1 can also be entered into the tunnel without the reaction force equipment 4 attached.

[0027] FIG. 7 is a flow chart showing the construction procedure of the rock bolt driving method according to the first embodiment of the present invention.

[0028] The rock bolt installation method of Example 1 includes: (1) an installation step of attaching the rock drill attachment 2 to the rail-mounted backhoe 3; (2) a connection step of connecting the reaction force equipment 4 to the base of the guide cell 21; (3) an extension step of adjusting the installation direction of the rock bolt 22 to a predetermined angle in the cross section of the tunnel side wall where the bolt is to be installed, and extending and adjusting the length of the pipe support 5 via the camber 7 until the tip of the pipe support 5 contacts the side wall or the ground on the opposite side of the installation location; and (4) a drilling step of drilling a hole with the rock drill attachment 2 fixed by the reaction force equipment 4 and the rock bolt 22. The method also includes a fixing step of fixing the rock bolt 22 while inserted into the hole drilled by the rock bolt 22. The method also includes an angle adjustment step of adjusting the orientation of the rock drill attachment 2 to another angle. This will be explained in detail below.

[0029] (Installation steps) First, as an installation step, before the rail-road vehicle is placed on the tracks, a rock drill attachment 2 equipped with a guide cell 21, a self-drilling rock bolt 22 arranged parallel to the guide cell 21, and a drifter 23 arranged at the base of the rock bolt 22 is attached to the rail-road backhoe 3.

[0030] (Connection step) Next, in the connection step, the reaction force equipment 4, which is equipped with a pipe support 5 and a mounting bracket 6, is connected to the base of the guide cell. The mounting bracket 6 connects the pipe support 5 to the guide cell 21. By aligning the drifter parallel to the longitudinal direction of the tunnel, the rail-mounted backhoe 3 can travel through the tunnel with the rock drill attachment 2 attached.

[0031] (extension step) Next, in the extension step, the drilling direction of the rock bolt 22 is aligned with a predetermined casting angle in the cross section of the casting point on the side wall inside tunnel T, and the length of the pipe support is extended and adjusted via camber 7 until the tip of the pipe support comes into contact with the side wall or ground on the opposite side of the casting point. Camber 7 is a wedge used to adjust the gap between the side wall or ground and the backing plate 522, and is used to stably hold the backing plate without damaging the side wall inside the tunnel. Camber 7 may be made of wood or resin.

[0032] (Drilling step) Next, in the drilling step, the rock drill attachment 2 is fixed by the reaction force equipment 4 and the rock bolt 22, and the side wall inside the tunnel is drilled.

[0033] (fixed step) Next, in the fixing step, mortar is injected into the hole drilled with the rock bolt 22 while the rock bolt 22 is still inserted, filling it with a hanger effect that makes it difficult to pull out, and then the rock bolt is fixed with a washer to secure it in place. In this embodiment, a self-drilling rock bolt is used, but this is not limited to this. If the rock bolt is not a self-drilling rock bolt, a drilling rod is attached to the rock drill attachment 2 instead of the rock bolt, the drilling rod is removed from the hole, mortar is injected into the hole, and a rock bolt (e.g., 2 m long) is inserted into the hole, and optionally the rock bolt is extended and fixed with a washer to secure it in place. The use of a drilling rod is preferable when the hole wall is upright when the drilling rod is removed, i.e., when the hole has not collapsed. If the tunnel wall is not made of consolidated rock and the hole would collapse and become clogged when the drilling rod is removed from the hole, it is preferable to use a self-drilling rock bolt and inject mortar into the hole with the rock bolt inserted as described above. Furthermore, self-drilling rock bolts can be used even faster because they eliminate one labor step. Therefore, taking into account the time it takes for the train to arrive, self-drilling rock bolts are preferable in order to shorten the time as much as possible.

[0034] (Angle adjustment step) Next, in the angle adjustment step, without changing the position of the rail-mounted backhoe 3, the length of the pipe support 5 is shortened, and the drilling direction of the rock bolt 22 is adjusted to a predetermined angle at the same cross section. Figure 8 shows the construction procedure for the rock bolt installation method of Example 1 of the present invention, with (a) First Explanatory Diagram, (b) Second Explanatory Diagram, and (c) Third Explanatory Diagram. Each diagram in Figure 8 shows a different installation angle. Depending on the orientation, the distance from the base end of the rock drill attachment 2 (the opposite side from the tip end where drilling is performed on the side wall) to the side wall of the tunnel opposite the side wall where drilling is performed or to the ground varies. However, the rock drill attachment 2 can be fixed using the reaction force device 4, which has an adjustable length, and this prevents the rail-mounted backhoe 3 from tipping over due to the vibrations caused by the installation.

[0035] (repetition) After the angle adjustment step, the extension step, drilling step, and fixing step are performed, and these steps are repeated at each angle to drive rock bolts into multiple driving positions on the same cross section.Then, the rail-mounted backhoe is moved to the next driving position, and the same steps are repeated.

[0036] The width of the rock bolting machine, measured from the outside of the crawler, is approximately 2.38 m in this example, making it suitable for driving rock bolts in tunnels with a sidewall distance of approximately 4.56 m. In this example, the longitudinal length of the rock drill attachment 2 is approximately 3.63 m.

[0037] The width and height of the tunnel are not the same, and the rock drill attachment 2 is smaller than both the width (approximately 4.56 m in Figure 8) and height (approximately 5.06 m in Figure 8) of the tunnel. Therefore, the rock drill attachment 2 can cast and rotate inside the single-track railway tunnel. However, the single-track railway tunnel is vertical, and the opening is a semicircular shape with an R of approximately 2.28 m above ground level, approximately 2.78 m above ground level. Furthermore, the rock drill attachment 2 is not located at the center of the tunnel, so it cannot rotate freely. If the rock drill attachment 2 were used alone, the impact of the reaction force during casting could cause the rail-mounted backhoe 3 to tip over inside the tunnel, or damage or create holes in the side walls or ground inside the tunnel. However, in this embodiment, the presence of the reaction force system 4 avoids the risk of tipping over.

[0038] In the example of Figure 8, the length of the pipe support 5 attached to the rock drill attachment 2 is adjusted to its shortest so that the length of the reaction equipment is approximately 0.93 m when driving at the location (R3) shown in Figure 8(b), and is adjusted to its longest so that the length of the reaction equipment 4 is approximately 2.02 m when driving at the location (R5) shown in Figure 8(a), since the distance from the driving position to the ground is approximately 5.66 m. Even at the location (L1) shown in Figure 8(c), rock bolts 22 can be accurately driven by simply changing the angle and supporting them with the reaction equipment, without using a cart or the like.

[0039] Figure 9 is an explanatory diagram of the locations where rock bolts are installed using the rock bolt installation method of Example 1 of the present invention. Rock bolts 22 are installed in five locations on each side of the tunnel, radially from the center of the tunnel. With conventional manual rock bolt installation methods, installing 10 rock bolts in the same cross section required changing the height of the scaffolding and re-installing the work platform each time, which required a great deal of time and effort. To improve work efficiency, the conventional method involved setting the scaffolding in one direction, moving to the next cross section, and repeating the same installation in the same direction. This required changing the height of the scaffolding and re-installing the work platform for the next direction, but this still required a lot of time and effort. According to this example, installing 10 rock bolts in the same cross section can be completed simply by adjusting the direction and the reaction equipment.

[0040] Therefore, according to this embodiment, construction efficiency is improved, the burden on workers can be reduced, and costs can be reduced.

[0041] {effect} The rock bolt installation method and rock bolt installation machine of this embodiment provide high construction efficiency, reduce the burden on workers, and also lead to cost reductions.

[0042] According to this embodiment, because a rail-mounted backhoe is used, unlike a rail-mounted dump truck, which moves by lowering iron wheels on the rails, bringing them into contact with the tires, and using the tire's driving force to rotate the iron wheels, there is no need to set up scaffolding, a work platform, or a rock drill. Also, instead of lowering the iron wheels on the rails and rotating them with a crawler, the iron wheels are driven by a motor to move the rail-mounted backhoe to the drilling location, and then the backhoe can be used to drive the rock bolts. This eliminates the time and effort required for changing the height of the scaffolding or re-setting the work platform depending on the angle and height of the bolts to be driven in order to drive rock bolts in all directions on the side walls of the tunnel in the same location.

[0043] Compared to the method of manually installing rock bolts into multi-section, one-way side walls, this method does not require the reassembly of scaffolding or complicated moving work, so construction time is shortened, the labor required for the work is reduced, construction time can be significantly shortened, and security and labor costs can be reduced, resulting in cost savings.

[0044] Furthermore, according to this embodiment, since reaction forces from the tunnel sidewalls and the ground can be secured, the drilling force is higher than when drilling holes manually using a hand-held rock drill. Furthermore, according to this embodiment, the drilling speed is fast, construction efficiency does not decrease even when the rock hardness is high, and stable high construction accuracy can be ensured.

[0045] Furthermore, since there is no need to manually hold a heavy rock drill, the work is not strenuous, there are no time limits on vibration work, and the risk of illness caused by vibration disorders is reduced.In addition, since the work can be done by non-expert technicians, the problems of an aging workforce and labor shortages are alleviated compared to conventional construction methods.

[0046] The present invention is not limited to the above-described embodiments, and various modifications and variations are possible without departing from the spirit of the invention. Furthermore, the components of the above-described embodiments can be combined in any manner without departing from the spirit of the invention. [Explanation of symbols]

[0047] 1. Rock bolting machine 2 Rock Drill Attachments 21 Guide Cell 22 Rock Bolt 23 Drifter 24 Mounting part 3. Rail-road backhoe 31 Iron Wheel 4. Reaction equipment 5 Pipe Support 51 Lumbar tube 511 Adjustment screw 512 Vertical hole 513 Baseplate 52 Insertion pipe 521 Pinhole 522 Receiving plate 53 Slide plate 531 Adjustment screw 532 Handle 6 Mounting bracket 61 Pipe support mounting bolt holes 62 Guide cell mounting bolt holes 63 volts 64 Pipe support side plate 65 Guide cell side plate 66 Ribs 7. Camber T-Tunnel

Claims

1. A rock drill attachment including a guide cell, a rock bolt or a drill rod arranged parallel to the guide cell, and a drifter arranged on the base side of the rock bolt or the drill rod; A rail-mounted backhoe to which the rock drill attachment is detachably attached; a reaction force device attached to the rock drill attachment; Equipped with The reaction force facility is A pipe support that can be adjusted for extension and contraction by inserting the base end of an insertion pipe with pin holes at regular intervals and a support plate at the tip into a hollow waist pipe with a base plate at one end and an adjustment male screw at the other end, and then inserting support pins into the pin holes to fix it at any length; a mounting bracket having a hole on one side for bolting the base plate and a hole on the other side integrated with the one side via a rib for bolting a base side of the guide cell; The device is provided with: A rock bolt driving machine characterized in that the reaction force equipment is detachably attached to the rock drill attachment inside a single-track railway tunnel.

2. A rock bolt installation method using the rock bolt installation machine according to claim 1, An attachment step of attaching the rock drill attachment to a rail-mounted backhoe; a connecting step of connecting the reaction force facility to the root side of the guide cell; An extension step in which the driving direction of the rock bolt is adjusted to a predetermined angle in the cross section of the driving point of the side wall in the tunnel, and the length of the pipe support is extended and adjusted via a camber to a position where the tip of the pipe support contacts the side wall or the ground on the opposite side of the driving point; a drilling step of drilling a hole with the rock drill attachment fixed by the reaction force equipment and the rock bolt; A rock bolt installation method comprising:

3. 3. The rock bolt driving method according to claim 2, wherein the drilling rod is used instead of the rock bolt from the mounting step to the drilling step.

4. 4. The rock bolt driving method according to claim 2 or 3, further comprising a fixing step of fixing the rock bolt in the drilled hole.

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