JP3120027B2 - Rock bolt construction equipment for tunnels - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock bolt installation device for a tunnel, and more particularly to a lock bolt for a tunnel which can be integrated from a drilling operation to an injection of a fixing material for installing a long lock bolt. Related to construction equipment.

[0002]

2. Description of the Related Art Conventionally, the length of a lock bolt used as a support member for a tunnel having a general cross section was about 2 to 4 m. However, in recent tunnel construction, large sections, large lengths, and high-speed construction tend to be performed regardless of the location and ground conditions. For this reason, tunnels with a considerably large excavated section have been planned and constructed even under conditions of poor geology. In these tunnels, long lock bolts have been used in order to further increase the support effect of the lock bolts as support members.

[0003]

However, in order to effectively support a large-section tunnel or a tunnel with a bad ground, the length of a lock bolt to be constructed is about 6 m to 12 m, and the work inside the work is unavoidable. It is necessary to cope with joint rods and joint lock bolts due to cross-sectional restrictions. For this reason, in the construction of the lock bolt as before, the connection of the drilling rod and the lock bolt is performed manually by the operator, while the ground drilling, the injection of the fixing material into the hole, and the insertion of the lock bolt are performed. Performing a series of operations significantly reduces the construction speed, which is contrary to the purpose of high-speed construction. In order to construct a long lock bolt quickly and safely, the following problems must be specifically solved. (1) Without drilling multiple drilling rods manually,
Enables quick connection for long hole drilling. (2) The filling material can be reliably filled over the entire deep hole without leaking out of the hole. (3) The fixed-length lock bolts can be quickly connected by a predetermined number without being manually operated by an operator, and can be inserted into the holes.

[0004] Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to quickly supply and connect drilling rods and lock bolts in drilling work and lock bolt insertion work. It is an object of the present invention to provide a tunnel lock bolt construction apparatus capable of reliably injecting a fixing material into a deep hole.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a tunnel rock bolt installation apparatus mounted on a guide shell of a tunnel drill jumbo, wherein the guide shell is provided with the guide shell. Equivalent to drilling length and bolt length while maintaining the parallel state along the longitudinal direction
And a plurality of drilling rods and lock bolts
With notches formed at predetermined intervals along the periphery
It is stored in the notch of the rack, and one of the drilled rod and the lock bolt, which is selected by the control means according to the process, is positioned at a predetermined position on the guide shell .
Thus, a storage device having a drive unit for operating the rack, a clamp device capable of gripping the specific one positioned at a predetermined position of the guide shell, and a fixing device accommodated in a part of the storage device An injection hose supply device capable of inserting an injection hose having a material injection tube as a guide tube into a lock bolt hole is provided.

A tunnel rock bolt installation device mounted on a guide shell of a tunnel drill jumbo, wherein the guide shell holds a parallel state along a longitudinal direction of the guide shell, and has a drilling length, Equivalent to bolt length
A plurality of drilling rods and lock bolts
It is plate-shaped, with notches formed at predetermined intervals along its periphery.
Stored in the notch of the rack, and selected by the control means according to the process among the drilling rod and the lock bolt.
Position of a particular one in a predetermined position on the guide shell that
Thereby manner, characterized a storage device having a driving unit for operating said rack, that equipped with a gripping clamp device the specific one which is positioned at a predetermined position of the guide shell.

Further, there is provided a tunnel rock bolt construction device mounted on a guide shell of a tunnel drill jumbo, wherein the guide shell holds a parallel state along a longitudinal direction of the guide shell, and a drilling length, Phase for bolt length
The multiple drilling rods and lock bolts
Disc-shaped, with notches formed at predetermined intervals along the periphery
The rack is stored in the notch , and the drilling rod and the lock bolt are selected by the control means according to the process.
Located at a predetermined position on the guide shell a specific one to be
As to the storage device having a driving unit for operating the rack, one clamp device capable gripping the positioned identified at a predetermined position of the guide shell, housed in a part of the storage device An injection hose supply device capable of inserting an injection hose having a fixing material injection tube as a guide tube into a lock bolt hole is mounted, and is provided on the drive unit, the clamp device, and the guide shell at a predetermined timing by the control means. The drilling operation is performed by linking the drilling rods, the drilling rods are sequentially connected to a number of drilling rods corresponding to the predetermined drilling length stored in the storage device, and drilling is performed. is operated by inserting the injection hose to inject fixing material in said hole, is sequentially connected Shinano the number lock bolt of which corresponds to the storage device a predetermined bolt length stored in thereafter Characterized in that so as to insert the injected hole of the fixing member.

At this time, the operation at the predetermined timing is performed by the operation of the driving unit in a state where a specific one has been moved to a position substantially coincident with the axial position of the shank rod of the drifter. This is realized by a series of operations of each specific configuration in which the position holding is changed, and the drill is continuously connected to the drilling rod or the lock bolt at the positioned position by feeding and rotating the drifter. Alternatively, a lock bolt is inserted into the hole, and a subsequent drilling rod or lock bolt can be sequentially connected as a connecting rod or connecting lock bolt.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an apparatus for constructing a lock bolt for a tunnel according to the present invention. In the embodiment of the present invention, as shown in FIG.
Crawler type 2 boom 1 cage hydraulic jumbo 1 as base machine of rock bolt construction equipment for tunnel
Is used. The hydraulic jumbo 1 is a known drill jumbo, and the total length of the mounted guide shell 2 is:
As shown in FIG. 1, the guide shell 2 is erected at the time of the upper half construction so that the top end lock bolt can be constructed so that L0 can be constructed.
= 5.5 m. The boom 3 is provided with a hydraulic drive mechanism having a tuning circuit so that the guide shell 2 can be moved in a predetermined direction. Further, a turning actuator (not shown) for freely turning the guide shell 2 is provided, and the guide shell 2 can be moved to a predetermined spatial position in the tunnel with the movement of the boom 3. In addition, drill jumbo 1
May use a wheel type in terms of mobility.

A known hydraulic drifter 4 is mounted on the guide shell 2. The hydraulic drifter 4 is fed over the guide shell 2 during drilling. Guide shell 2
The length of the drilling rod 6 mounted on the top is Lr = 2.0 m
Set to about. The length of the drill rod 6 is preferably set to an appropriate length according to the feed length of the guide shell 2, the capacity of the hydraulic drifter 4, and the like. A centralizer 5 is attached to the tip of the guide shell 2. This centralizer 5 is used as a flea catcher when drilling.
Further, it serves as a bolt receiver when the lock bolt is inserted, and in this embodiment, a hydraulic clamp mechanism is employed.

Next, each device mounted on the guide shell 2 will be described with reference to FIGS. FIG. 2 is a plan view showing the guide shell 2 and a group of devices mounted on the guide shell 2, and FIG. 3 is a front view of the same. As shown in FIG. 2, a rod / bolt storage device 10 is provided on the left side surface when viewed from the tip of the guide shell 2. This rod / bolt storage device 10 includes two swing arms 1
1A, a casing pipe 13 erected between the two swing arms 11A, 11A, and the casing pipe 13
And a step motor 14 as a drive unit for rotating the rod rack 20 stepwise. Of these, the swing arm 11A is, as shown in FIGS.
It is a box with a substantially rectangular shape. And the arm lower end 1
1Aa is supported by a bracket 16 fixed to the lower surface of the guide shell 2 via a turning support shaft 15 (FIG. 4).
reference). Further, as shown in FIGS. 4 and 7, the tip of a cylinder rod 26 of the tilt jack 25 is rotatably mounted near the turning support shaft 15 below the turning arm 11A. The tilt jack 25 is attached to a part of the guide shell 2 so as to be substantially horizontal.
Depending on the amount of extension of the cylinder rod 26, the swing arm 11A
Is controlled precisely.

As shown in FIGS. 2 and 3, a steel casing pipe 13 is provided between the two turning arms 11A. At this time, both ends of the casing pipe 13 are rotatably supported by bearings 17 at the upper end of the swing arm 11A. The casing pipe 13 accommodates a fixing material injection pipe 31 described later in the pipe,
A step motor 14 fixedly supported on a part of the upper arm of A
By the rotation drive of, it is possible to rotate every predetermined rotation angle. Rod racks 20 are fitted to the front and rear pivot arms 11A of the casing pipe 13, respectively. As shown in FIG. 5A, the rod rack 20 has a disk shape in the present embodiment, and 14 notches 21 are formed around the disk at equal intervals in the circumferential direction. . The notch 21 can hold the drilling rod 6 or the lock bolt 7. Therefore, as shown in FIGS. 2 and 3, the present apparatus can store the drilling rods 6 or the lock bolts 7 in an appropriate number by bridging between two rod racks 20. In the present embodiment, seven drilling rods 6 and lock bolts 7 are stored in a rod rack 20 (see FIG. 5A). Notch 2 of rod rack 20
The ratio of the number of 1s and the number of stowed rods 6 or lock bolts 7 to be stored can be set as appropriate according to the conditions of the ground to be applied, the drilling length, and the lock bolt length.

An injection hose supply device 30 is provided at a position rearward of the rod / bolt storage device 10.
The injection hose 32 is a flexible resin hose connected to the rear of the fixing material injection pipe 31 housed inside the casing pipe 13, and is driven by a feeding operation of a feeding roller 33 in the injection hose supply device 30. Using the injection pipe 31 as a guide pipe, the injection hose 32 can be inserted into the lock bolt hole in which drilling has been completed. When the injection hose 32 is inserted to a predetermined depth, mortar supplied from a mortar pump (not shown) installed behind the lock bolt application device can be injected into the lock bolt hole.

On the other hand, a bracket 41 is fixed to the opposite side of the rod / bolt storage device 10 with the guide shell 2 interposed therebetween, as shown in FIG. The bracket 41 plays a role of a support for supporting the clamp device 40. The clamp device 40 has a hydraulic cylinder jack 43 that can operate the clamp arm 42. The hydraulic cylinder jack 43 is fixed on a slide plate 44 provided on the upper surface of the bracket 41. Further, as shown in FIG. 4, the distal end of the clamp arm 42 can be moved forward by the rod extending operation of the slide jack 45 provided below the slide plate 44, and the guide shell 2 can be moved forward.
The drill rod 6 or the lock bolt 7 can be gripped at the upper predetermined position.

At the rear end of the guide shell 2, a hydraulic drifter 4 is mounted via a slide base 8.
The hydraulic drifter 4 is fed by a predetermined propulsive force toward the ground on the guide shell 2 using the upper pipe frame of the guide shell 2 as a guide.

Hereinafter, the configuration and operation of each device will be described with reference to FIGS. FIG. 4 shows the hydraulic drifter 4 mounted on the guide shell 2 by a two-dot chain line. The rod / bolt storage device 10 of the present invention can operate the turning arm 11A by controlling the extension amount of the cylinder rod 26 of the tilt jack 25. Thereby, the axis of the drilled rod 6 or the lock bolt 7 stored in the rod rack 20 can be substantially aligned with the center position of the shank rod 9 mounted on the hydraulic drifter 4. Hereinafter, in this specification, the rotational center, the hammering operation, and the feed operation of the hydraulic drifter 4 will be referred to as a work axis C at an axial position at which the operations can be transmitted to the drilling rod 6 or the lock bolt 7.

When drilling a lock bolt hole, the rod and bolt storage device 10 moves the drilling rod 6 mounted and stored in the rod rack 20 to the position of the working axis C, and the drilling rod 6 is clamped by the clamping device 40. In this state, the drilling rod 6 can be connected to the shank rod 9 (or the drilling rods 6) of the hydraulic drifter 4 in this state. Also,
When inserting the lock bolt, the lock bolt 7 mounted and stored in the rod rack 20 is moved to the position of the working axis C, and the lock bolt 7 and the shank rod 9 of the hydraulic drifter 4 are gripped by the clamp device 40.
(Or the lock bolts 7 via a sleeve). In order to confirm that the drilling rod 6 or the lock bolt 7 is positioned at the position of the working axis C, a position sensor may be provided, or a position detecting means such as a rod stroke measuring limit switch of the hydraulic cylinder may be provided. Can be used. The operation information signal from the position detection unit to the drive unit such as the step motor 14 is output to a sequential controller as a control unit, and an instruction to each operation unit is output according to an operation instruction from the sequential controller.

Here, the configuration of the rod rack 20 will be described. Each notch 21 formed in the rod rack 20
As shown in FIG. 5B, the width b is set slightly larger than the diameter of the drilling rod 6. For this reason, the drill rod 6 or the lock bolt 7 described later can be held in the notch 21 portion. At this time, in order to hold the drilling rod 6 and the lock bolt 7 in the notch 21,
Attraction magnets 22 are arranged radially from the support ring 23. In the present embodiment, the attraction magnet 22 is a B-contact type electromagnet. The operator can operate the control panel (not shown) by manual operation to control the ON / OFF state of the attraction magnet 22 at an arbitrary notch 21 position. Further, it is possible to automatically set ON / OFF at a predetermined notch 21 position by a control circuit such as a programmable controller based on the relationship between the rotation direction of the rod rack 20 and the mounting position of the drill rod 6 or the lock bolt 7. Is also possible. When a fiber bolt or the like is used as the lock bolt, a large number of mechanical clamp mechanisms may be provided in place of the attraction magnet 22 to attach and detach the lock bolt.

At the position of the notch 21, a rod holder 24 is mounted as shown in FIG. 5 (b). The rod holder 24 has a spring S
Even if the attracting magnet 22 is in the OFF state, the spring S
The rod or lock bolt 7 can be retained in the notch 21 by protruding into the notch 21. The drill rod 6
Is different from the diameter of the lock bolt 7, but the amount of protrusion of the rod retainer 24 is limited according to the diameter, so that in any case, the position can be held in the notch 21 in a stable state. For example, when the drilling rod 6 is gripped by the clamp device 40 and the turning arm 11A is turned to return to the standby position, the rod rack 20 comes off the drilling rod 6 held at the position of the work axis C. As described above, the drilling rod 6 comes off the notch 21 while pressing the rod retainer 24.

Next, a drill rod 6 for drilling a lock bolt hole and a lock bolt 7 as a support member will be described. In this embodiment, the length of one drilling rod 6 is Lr = 2.0 m from the feed length of the guide shell 2 and the like.
Is set to Therefore, drilling is performed by the joint chisel method so that a maximum drilling length of about 20 m can be expected. Further, in the present embodiment, a drilled rod 6 in which a sleeve 6B is integrally formed on one side of a rod body 6A is employed so that the rod can be easily connected and disconnected. As shown in FIGS. 6 (a) and 6 (b), this drilled rod 6 is a hollow rod having a hexagonal cross section and a diagonal length of 32 mm, and has a left external thread 6a at the tip of the rod body 6A. Is formed at the rear end, and a widened sleeve 6B (outer diameter: 45.3 mm) is formed, and a left female screw 6b is formed at the hollow inner peripheral surface of the sleeve 6B. In addition, it goes without saying that the connecting rod of the double-end screw type may be connected by a sleeve (coupler). In the present embodiment, a deformed steel bar (D25) cut into a predetermined length and provided with a thread portion at an end is used for the lock bolt 7. This lock bolt 7 is also connected by a predetermined sleeve. Lock bolt 7
As long as it has a function as a connecting rod, various known types can be used.

Next, the configuration and operation of the injection hose supply device 30 will be described with reference to FIGS. The injection hose supply device 30 is provided with the injection hose 32 as described above.
Is a device for inserting the lock bolt into the lock bolt hole. In order to smoothly insert the injection hose 32 into the lock bolt hole, a fixing material injection pipe 31 as a guide pipe is connected to the end of the hose. The fixing material injection pipe 31 is accommodated in the casing pipe 13 at the standby position. Inside the apparatus, a pair of feeding rollers 3 composed of two opposed wheels are provided.
3 are arranged in the hose feeding direction. In the present embodiment, a roller row is formed by four feeding rollers 33. The lower roller row 33a is a hydraulic motor 3
The upper roller row 33b is supported by a hose pressing mechanism 35, and constitutes a driven wheel that assists in the feeding of the hose. An injection hose 32 is provided between the driving wheel and the driven wheel.
Is pinched. The injection hose supply device 30 is in an upright state at the standby position shown in FIGS. 2 and 3 at the time of drilling and inserting the lock bolt, but at the time of hose supply, as shown in FIG. The cylinder is pivoted by the extension operation of the rod 38 of the cylinder 37 and is inclined so that the axial center position of the injection hose 32 coincides with the working axis C.

Next, a description will be given, with reference to FIGS. 9 to 11, of a procedure for drilling holes and inserting lock bolts by the lock bolt construction apparatus having the above-described configuration. All work processes are
It can be roughly divided into process blocks A to E. A description will be given along the operation procedure in each process block.

[Process block A: Jumbo positioning,
Drilling preparation] The body of the drill jumbo 1 is operated to move to the lock bolt installation position of the tunnel face, and the body of the drill jumbo 1 is positioned. Thereafter, the boom 3 is fixed in a horizontal state, and the drilling rod 6 and the lock bolt 7 are mounted on the rod rack 20. At this time, the cylinder rod 26 of the tilt jack 25 is in an extended state. In the present embodiment, seven drilling rods 6 and seven lock bolts 7 are stored in the rod rack 20 each. In addition, the rod rack 20
The rod 6 and the bolt 7 attached to the
2 securely holds. Subsequently, the drilling state of the boom 3 is checked. Items to be confirmed include the standby position of the hydraulic drifter 4 on the guide shell 2, the mounting state of the drilling rod 6, the lock bolt 7 on the rod rack 20, the accommodation state of the fixing material injection pipe 31 in the casing pipe 13, and the injection state. There are the connection state of the hose 32, the standby position of the injection hose supply device 30, the position state of the clamp device 40, and the like. Whether these confirmation items are in a normal state can be confirmed by mechanical or electrical measurement results or visually. afterwards,
The tip of the guide shell 2 is moved to the drilling position.

[Process Block B: Drilling Work] By retracting the cylinder rod 26 of the tilt jack 25, the turning arm 11A of the rod / bolt storage device 10 is turned to work the mounting position of the drilling rod 6 of the rod rack 20. Set to axis C. Next, the rod rack 20 is rotated to the rod storage position where the drill bit 6 is attached to the tip, and the drill rod 6 is positioned and set to the working axis C. Next, by extending the cylinder of the slide jack 45 of the clamp device 40, the clamp arm 42 is advanced to the position of the work axis C, and the drilling rod 6 is caught by the clamp arm 42 by the operation of the hydraulic cylinder 43 of the clamp device 40. The clamp arm 42 is set to the “closed” state. From this state, the cylinder rod 26 of the tilt jack 25 is extended and the turning arm 11A is turned to return the rod / bolt storage device 10 to the standby position.
The hydraulic drifter 4 is advanced to a position near the rear end of the drilling rod 6 held by the clamp device 40, and in a state where the sleeve 6 </ b> B at the rear end of the drilling rod 6 and the shank rod 9 of the hydraulic drifter 4 are in light contact with each other, The drill rod 4 is moved forward while rotating forward to connect the drilling rod 6 and the shank rod 9. In this state, the centralizer 5 at the tip of the guide shell 2
Then, the drilling rod 6 is released, and the hydraulic drifter 4 is driven to perform drilling. Drilling is achieved by rotation, hitting, and feeding of the hydraulic drifter 4 transmitted to the drilling rod 6 via the shank rod 9. When the drilling rod 6 advances into the ground by one drilling length, the centralizer 5 is brought into the “closed” state and the rear end of the rod is held at the tip of the guide shell 2. In this state, the hydraulic drifter 4 is retracted while rotating in the reverse direction, and the rod 6
And the hydraulic drifter 4 are dissociated. After confirming the dissociation of the two, the hydraulic drifter 4 is retracted along the guide shell 2 to the standby position. This cycle is repeated, and drilling is performed by connecting the drilling rod 6 until a predetermined drilling length is reached.

[Step Block C: Drilling Rod Collection Work] When drilling up to a predetermined drilling length is completed, the drilling rods 6 connected in the ground are collected. First, when the insertion of the final drilling rod 6 is completed, the hydraulic drill 4 is retracted and the final drilling rod 6 is pulled out from the ground. When the predetermined withdrawal amount is reached, the clamp mechanism of the centralizer 5 located at the rear end of the rod (the rod to be removed next) located in the ground is set to the “closed” state, and the last drilled hole that has just been withdrawn. The rod 6 is caught by operating the clamp device 40 and is held. In this state, the hydraulic drifter 4 is rotated in the reverse direction to disengage the rod and the hydraulic drifter 4. Further, the pivot arm 11A of the rod / bolt storage device 10 is pivoted to move the rod rack 20 to the rod position, and the rod rack 20 is moved to the working axis C so that the notch 21 for storing the rod to be collected comes to the rod position. Rotate to near. The clamp device 40 holding the collection rod is further advanced, and the notch 21 of the rod rack 20 is cut.
And stored in the rod rack 20. Thereafter, the clamp arm 42 of the clamp device 40 is released, and the clamp device 40 is retracted. The rod / bolt storage device 10 storing the recovery rod is returned to the standby position. Thus, the collection of one drilling rod 6 is completed. Thereafter, the step of advancing the hydraulic drill 4 to the rear end position of the next drilling rod 6, connecting the shank rod 9 and the drilling rod 6, and pulling out the next drilling rod 6 is repeated by a predetermined number.

[Process Block D: Injection of Fixing Material] When all the drilling rods 6 have been collected, the positions of the hydraulic drifter 4 and the rod / bolt storage device 10 are checked, and the mortar pump installed behind the lock bolt application device. Prepare and check the operation of the mortar pumping device. The pivot arm 11A of the rod / bolt storage device 10 is driven to make the axis of the casing pipe 13 coincide with the axis of operation C. A fixing material injection pipe 31 is accommodated in the casing pipe 13. At the same time, the swivel arm 11A of the injection hose supply device 30
To adjust the position of the injection hose 32 of the apparatus to the position of the fixing material injection tube 31. With the fixing material injection pipe 31 aligned with the hole, the injection hose supply device 30 is operated to insert the injection hose 32 into the lock bolt hole.
When the feeding length is confirmed and the fixing material injection pipe 31 reaches the innermost part, mortar pressure feeding is started. Since the inside of the hole is gradually filled from the back, withdrawal of the injection hose 32 is started several minutes later, and mortar pressure feeding is continued while pulling out the injection hose 32 at a predetermined withdrawal speed. When the mortar filling is completed, the injection hose 32 is pulled out. At this time, it is preferable to provide a mortar cover at the tip of the lock bolt application device so that the slime and the fixing material do not leak out of the holes and contaminate the surroundings. As the mortar cover, various shapes such as a plate that covers the front part around the centralizer 5 like an umbrella can be used. As the material of the cover, a hard plastic, a glass fiber reinforced resin, a steel plate or the like is preferable.

The injection hose 32 is cleaned immediately after being pulled out. The cleaned injection hose 32 is stored. The injection hose supply device 30 and the rod / bolt storage device 10 are returned to the standby position, and the injection operation is completed. The material used as the fixing material is a resin-based fixing material other than mortar,
Cement milk or the like can be used. Also, in consideration of the workability of the top end lock bolt, it is also preferable to use a fixing material having enhanced thixotropy in order to prevent mortar from dropping from the upward bolt hole. Further, the injection hose supply device 30 does not have to be mounted on the guide shell,
In this case, the operation of the rod / bolt storage device and the clamp device may be performed by the lock bolt application device so that the drilling and the insertion of the lock bolt can be performed consistently.

[Step Block E: Lock Bolt Insertion Work] Insertion work of the lock bolt 7 is basically equivalent to drilling work (process block B). In the work process,
After the lock bolt insertion operation, the mortar filling operation may be performed. In such a case, the order of the process blocks D and E may be changed to perform a series of operations.

[0029]

As is apparent from the above description, according to the present invention, when constructing a long lock bolt, a series of operations of ground drilling, injection of a fixing material, and insertion of a lock bolt are performed.
The mechanized construction has the effect that it can be implemented quickly and safely.

[Brief description of the drawings]

FIG. 1 is a front view and a side view showing an embodiment of a tunnel lock bolt construction device according to the present invention.

FIG. 2 is a plan view showing a configuration of a guide shell shown in FIG. 1 and a device mounted on the guide shell.

FIG. 3 is a front view showing the configuration of the guide shell shown in FIG. 1 and a device mounted on the guide shell.

FIG. 4 is a partial cross-sectional view showing a configuration and an operation state of a rod / bolt storage device and a clamp device.

FIG. 5 is an enlarged view showing a detailed configuration of a rod rack.

FIG. 6 is a front view and a cross-sectional view showing a configuration of a drilling rod.

FIG. 7 is a partial sectional view showing an operation state of the rod / bolt storage device.

FIG. 8 is a partial cross-sectional view showing a configuration and an operation state of the injection hose supply device.

FIG. 9 is a flowchart (part 1) illustrating a work flow of rock bolt construction by the lock bolt construction device of the present invention.

FIG. 10 is a flowchart (part 2) illustrating a work flow of rock bolt construction by the lock bolt construction device of the present invention.

FIG. 11 is a flowchart (part 3) illustrating a work flow of rock bolt construction by the lock bolt construction device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drill jumbo 2 Guide shell 4 Hydraulic drifter 6 Drilling bolt 7 Lock bolt 10 Rod / bolt storage device 11A, 11B Swivel arm 13 Casing pipe 14 Step motor 20 Rod rack 22 Adsorption magnet 24 Rod presser 30 Injection hose supply device 31 Fixing material Injection pipe 32 Injection hose 33 Feeding roller 34 Hydraulic motor 40 Clamp device 42 Clamp arm

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuo Kawabata 2 Tobanjima Construction, Sanbancho, Chiyoda-ku, Tokyo Inside (72) Inventor Shigeru Ishibashi 2052-2, Kamino, Kumagaya-shi, Saitama (56) References Special JP 4-75997 (JP, B2) JP 6-52033 (JP, B2) JP 6-52034 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 20 / 00 E21B 19/20 E21B 19/18

Claims (4)

(57) [Claims] 1. A tunnel rock bolt installation device mounted on a guide shell of a tunnel drill jumbo, wherein the guide shell is arranged in a parallel state along a longitudinal direction of the guide shell.
Multiple drilling rods equivalent to drilling length and bolt length
The lock bolt and the substantially disk-shaped, along the periphery
Stored in the cut of the rack notches are formed at predetermined intervals, of the drilling rod and the locking bolt, according to step
A storage device having a drive unit for operating the rack so that a specific one selected by the control means is positioned at a predetermined position on the guide shell; and And a pouring hose supply device capable of inserting a pouring hose having a fixing material pouring tube housed in a part of the storage device as a guide tube into a lock bolt hole. A rock bolt construction device for a tunnel, characterized in that: 2. A tunnel lock bolt installation device mounted on a guide shell of a tunnel drill jumbo, wherein the guide shell is arranged in a state of being parallel to the guide shell along a longitudinal direction of the guide shell.
Multiple drilling rods equivalent to drilling length and bolt length
The lock bolt and the substantially disk-shaped, along the periphery
Stored in the cut of the rack notches are formed at predetermined intervals, of the drilling rod and the locking bolt, according to step
A storage device having a drive unit for operating the rack so that a specific one selected by the control means is positioned at a predetermined position on the guide shell; and And a clamp device capable of holding one of the above. 3. A tunnel rock bolt installation device mounted on a guide shell of a tunnel drill jumbo, wherein the guide shell holds a parallel state along a longitudinal direction of the guide shell, and has a drilling length. Equivalent to bolt length
And a plurality of drilling rods and lock bolts
With notches formed at predetermined intervals along the periphery
It is stored in the notch of the rack, and one of the drilled rod and the lock bolt, which is selected by the control means according to the process, is positioned at a predetermined position on the guide shell .
Thus, a storage device having a drive unit for operating the rack, a clamp device capable of gripping the specific one positioned at a predetermined position of the guide shell, and a fixing device accommodated in a part of the storage device An injection hose supply device capable of inserting an injection hose having a material injection tube as a guide tube into a lock bolt hole is mounted, and is provided on the drive unit, the clamp device, and the guide shell at a predetermined timing by the control means. The driller is operated in cooperation with the drilling rods of the number corresponding to the predetermined drilling length stored in the storage device in order to perform drilling, and the injection hose supply device is operated in the drilled hole. is not the injection hose inserted by injecting fixing material in said hole, the lock bolt in the number corresponding to the predetermined bolt length stored in the storage device and thereafter, before while sequentially connected Tunnel lock bolt construction apparatus is characterized in that so as to insert the injected hole of the fixing member. 4. A tunnel rock bolt installation device mounted on a guide shell of a tunnel drill jumbo, wherein the guide shell holds a side-by-side state along a longitudinal direction of the guide shell, and has a drilling length. Equivalent to bolt length
And a plurality of drilling rods and lock bolts
With notches formed at predetermined intervals along the periphery
It is stored in the notch of the rack, and one of the drilled rod and the lock bolt, which is selected by the control means according to the process, is positioned at a predetermined position on the guide shell .
As described above, a storage device having a drive unit for operating the rack, and a clamp device capable of gripping the specific one positioned at a predetermined position of the guide shell are mounted, and the control unit performs the control at a predetermined timing. The drive unit, the clamp device, and the drifter provided on the guide shell are operated in cooperation with each other to adjust the drilling length to the predetermined hole length stored in the storage device.
Drilling is performed by sequentially connecting the corresponding number of drilling rods, and then the predetermined number stored in the storage device in the drilled hole is completed.
A lock bolt installation device for a tunnel, wherein a number of lock bolts corresponding to a bolt length are sequentially connected and inserted into the hole.