JP3880592B2 - Slope work method - Google Patents

Description

The present invention relates to a method for performing operations such as slope protection construction in slope formed on the natural ground or the like.

  When slopes are formed by cutting mountains and cliffs, slope protection works such as mortar spraying and concrete laying are carried out to prevent the slope from collapsing. In such slope protection construction, for example, a rope is tied to a standing tree located on the shoulder and the rope is lowered from above the slope. Then, a safety belt mounted around the operator's waist is connected so as to be movable and lockable along the rope, and the operator performs the slope work while hanging on the rope.

  Conventionally, as a method of working on the slope, a method has been proposed in which a lifeline is tied to a standing tree located on the shoulder, the lifeline is lowered to the slope, the worker attaches the lifeline to the body so that it can be extended, and moves up and down along the lifeline (For example, Patent Document 1). In addition, a method has been proposed in which a direction change pulley is fixed above the slope, the rope is lowered to the slope via the direction change pulley, and the operator moves up and down along the rope and swings and moves left and right. (For example, Patent Document 2). Furthermore, a lateral movement rope and a traverse winch are installed above the slope, the rope is lowered from the lateral traverse to the slope, and the operator moves up and down along the rope, and operates the traverse winch. A method of lateral movement has been proposed (for example, Patent Document 3).

JP 2002-146794 A Japanese Patent Laid-Open No. 2002-70017 JP-A-11-36309

  Conventionally, in order to prevent the rope from rubbing and being damaged by the shoulder or the ground of the slope, a rod-shaped member such as a single pipe pipe is arranged in the lateral direction near the shoulder and the rope is hung on the rod-shaped member. The rope was moved away from the ground. Further, a cloth-like protective material is wrapped around the portion of the rope in contact with the rod-shaped member to protect the rope from being rubbed and damaged directly with the rod-shaped member.

  However, in the conventional slope working method, the protective material wrapped around the rope is easily displaced and needs to be firmly fixed. In this case, it is troublesome to attach and remove the protective material. In addition, when the operator moves by shaking greatly in the lateral direction, the part covered with the protective material is displaced from the bar-shaped member, and the part not covered with the protective material comes into contact with the bar-shaped member or the support member of the bar-shaped member and is damaged. There was a problem to do.

An object of the present invention is to provide a slope working method capable of preventing damage to a rope used in slope work .

  In order to solve the above-mentioned problems, according to the present invention, a method of lowering a rope supported on an arbitrary fulcrum to a slope and performing an operation on the slope while an operator suspends the rope. A rod-shaped member is installed horizontally above or on the front surface of the slope, and a jig movable along the rod-shaped member is inserted through the rod-shaped member and roped into a holding groove provided on the peripheral surface of the jig. A slope working method is provided, wherein the rope is lowered to the front of the slope through the jig. According to such a slope working method, it is possible to prevent the rope from rubbing and being damaged by the rod-shaped member. The rope is always protected by the jig even if the operator swings and moves in the horizontal direction. In addition, there is no trouble of attaching or removing the protective material.

In this slope working method, the jig may include a cylindrical body having a through-hole penetrating the rod-shaped member. The holding groove may be formed on the peripheral surface of the cylindrical body. You may provide a flange part in the both ends of the said cylinder. Further, the jig may be divided into a plurality of members, and the jig may be attached to the rod-like member by surrounding the rod-like member with the plurality of members and coupling the plurality of members to each other. good.

  According to the present invention, the rope can be smoothly moved with respect to the rod-shaped member, and the rope can be prevented from being rubbed and damaged. Even if the operator moves laterally, the rope is always reliably protected by the jig, and the rope can be prevented from being damaged by rubbing against the rod-shaped member. By forming the flange portion on the jig, it is possible to prevent the rope from coming into contact with the support member or the like of the rod-shaped member and being damaged. In addition, there is no hassle of attaching and removing rope protection materials that have been used in the past.

  Hereinafter, a preferred embodiment of the present invention will be described based on a slope protection construction facility. As shown in FIG. 1, a shoulder 2 is formed above the slope 1, and a plurality of trees 3 grow near the shoulder 2. The shoulder 2 is formed between the slope 1 and the stand 3. A temporary structure 5 is installed in the vicinity of the shoulder 2. Further, the ropes 7a and 7b are wound around the trunks of the two standing trees 3 and fixed, and the ends of the ropes 7a and 7b and one end of the rope 7 are connected to each other, thereby supporting one end of the rope 7. The rope 7 is held by the temporary structure 5 in the middle and lowered to the front surface of the slope 1. A safety belt 11 attached to the rope 7 around the waist of the operator 10 is connected to the rope 7. The safety belt 11 is connected along the rope 7 so as to be movable and lockable. The operator 10 works on the slope 1 while hanging on the rope 7 via the safety belt 11.

  As shown in FIG. 2, the temporary structure 5 is composed of a plurality of support members 15 and a rod-like member 16 that are erected on the ground near the shoulder 2. The rod-like member 16 is disposed sideways and is fixed to each column member 15 by a clamp 17. As each support | pillar member 15 and the rod-shaped member 16, a steel single pipe pipe etc. are used, for example. A jig 20 according to the present invention is attached to the rod-shaped member 16. A through hole 21 is formed in the jig 20. The jig 20 is attached in a state where the rod-like member 16 is passed through the through-hole 21, and is mounted so as to be movable along the rod-like member 16 between the two column members 15. A holding groove 22 is formed on the peripheral surface of the jig 20 to hold the rope 7 so as to hang on the way. By holding the rope 7 in the holding groove 22, the rope 7 is lowered to the front surface of the slope 1 through the jig 20.

  As shown in FIG. 3, the jig 20 includes a cylindrical body 23 having a through hole 21 on the inside. Flange portions 24 and 25 are formed at both ends of the cylindrical body 23, respectively. The peripheral surface of the cylindrical body 23 is formed such that the diameter is small at the intermediate portion and the diameter increases toward the flange portions 24 and 25, and the cross-sectional shape (when cut by a plane including the central axis of the through hole 21) Is formed in a U-shape. The peripheral surface of the cylinder 23 is a holding groove 22, and the holding groove 22 is formed so as to be continuous in the circumferential direction of the cylinder 23. The material of the jig 20 is preferably plastic, for example, and polypropylene is particularly preferable.

  Next, the slope protection work using the above equipment will be explained. As shown in FIG. 1, one end is supported by ropes 7 a and 7 b fixed to the trunks of two standing trees 3, and the rope 7 is lowered to the front surface of the slope 1 through the jig 20 of the temporary structure 5. The safety belt 11 is connected. The worker 10 hangs on the rope 7 and lands his / her foot on the slope 1 to fix the body and work. When moving in the vertical direction, the safety belt 11 is moved relative to the rope 7 while moving up and down on the slope 1.

  When the operator 10 moves in the lateral direction, as shown in FIG. 2, the rope 7 held in the holding groove 22 of the jig 20 moves in the lateral direction, and the jig 20 moves along the rod-shaped member 16 with the rope 7. Move together. Therefore, the rope 7 can be smoothly moved in the horizontal direction, and the operator 10 can easily move in the horizontal direction. Since the flange portions 24 and 25 are formed on both sides of the holding groove 22, there is no possibility that the rope 7 is detached from the jig 20. Since the jig 20 always moves laterally integrally with the rope 7, the rope 7 is always protected by the jig 20, and the rope 7 does not directly contact the rod-shaped member 16. Therefore, there is no possibility that the rope 7 is rubbed with the rod-shaped member 16 and damaged. Further, when the rope 7 and the jig 20 are moved in the vicinity of the support member 15 and the clamp 17, the flange portions 24 and 25 abut against the clamp 17, but the rope 7 does not directly contact the support member 15 or the clamp 17. No. Therefore, it is possible to prevent the rope 7 from being damaged by rubbing against the support member 15 or being caught by the clamp 17. Further, when the rope 7 is moved largely in the lateral direction, the portion of the rope 7 held by the holding groove 22 moves in the vertical direction, but the jig 20 is attached to be rotatable around the rod-shaped member 16. In addition, since the holding groove 22 is continuously formed in the circumferential direction of the jig 20, the jig 20 is rotated according to the vertical movement of the rope 7, and the rope 7 is always held by the holding groove 22. However, the rope 7 and the jig 20 can be moved in the lateral direction. In this case, it is possible to prevent the rope 7 from being damaged by rubbing against the holding groove 22.

  Thus, the operator 10 can perform work on the slope 1 by hanging on the rope 7 while moving in the vertical and horizontal directions as appropriate. Furthermore, the jigs 20 are mounted on the other rod-like members 16 provided side by side in the temporary structure 5 so that the ropes 7 are held by the jigs 20, and the ropes 7 are passed through the jigs 20. Then, the operator 10 hangs on each rope 7 while appropriately moving in the vertical direction and the horizontal direction, and performs the work on the slope 1 respectively. In this way, the entire slope 1 is constructed.

  According to such a slope working method, the jig 20 holding the rope 7 can be moved along the rod-like member 16, so that even if the operator 10 moves laterally, the rope 7 moves smoothly in the lateral direction. The operator 10 can easily move in the lateral direction. Since the rope 7 is always securely held in the holding groove 22, it is possible to prevent the rope 7 from being damaged by rubbing against the rod-shaped member 16. Since the jig 20 is attached so as to be rotatable around the rod-shaped member 16, the rope 7 can be prevented from being rubbed and damaged by the holding groove 22. By forming the flange portions 24 and 25 on the jig 20, it is possible to prevent the rope 7 from coming off the jig 20, and further, it is possible to prevent the rope 7 from coming into contact with the support member 15 and the clamp 17 and being damaged. In addition, there is no hassle of attaching and removing rope protection materials that have been used in the past.

  Although an example of a preferred embodiment of the present invention has been described above, the present invention is not limited to the embodiment described here. The present invention can be applied to various slope protection works such as mortar spraying. Further, in the present embodiment, the explanation is based on the slope protection work as an example of the slope work. However, the slope work is not limited to such work, and may be, for example, the dismantling work of the covering slope. .

  In the present embodiment, one end of the rope 7 is supported by using a point where the ends of the ropes 7a and 7b fixed to the trunk of the tree 3 and the rope 7 are connected to each other as a fulcrum. The fulcrum and the method of supporting the rope 7 at the fulcrum are not limited to such a form. For example, the fulcrum of the rope 7 may be arranged below the slope 1 and the rope 7 may be stretched and hung on the jig 20 from below the slope 1. Further, the rope 7 may be supported using a hoisting machine or the like for feeding or winding the rope 7 as a fulcrum.

  In this embodiment, when the worker 10 moves in the vertical direction, the worker 10 moves up and down while moving the safety belt 11 with respect to the rope 7. However, the worker 10 moves in the vertical direction. The method is not limited to such a method. For example, the rope 7 is extended from the hoisting machine, lowered to the slope 1 through the jig 20, the rope 7 is fixed to the safety belt 11 of the operator 10, and the operator 10 is suspended, and the hoisting is performed. It is good also as a structure which raises / lowers the operator 10 by drawing out or winding up the rope 7 with a machine. In addition to the rope used as the lifeline of the worker 10, the rope may be an auxiliary rope provided for preventing the fall. Furthermore, the jig of the present invention may be used when the equipment used for the work is suspended on the rope and raised and lowered on the slope, and by lowering the rope to the slope through the jig of the present invention, Damage to the rope that raises and lowers the equipment can be prevented.

  As shown in FIG. 4, in the jig 20, the peripheral surface of the cylindrical body 23 may be formed with a constant diameter, and the groove formed by the flange portions 24 and 25 and the peripheral surface of the cylindrical body 23 may be used as the holding groove 22. . In this case, it is preferable that the width of the holding groove 22 (the width between the flange portion 24 and the flange portion 25) is made larger than when the holding groove 22 has a U-shaped cross section. Then, the rope 7 can be held with a margin.

  As shown in FIG. 5, when the second temporary structure 28 is installed in front of the slope 1 and the rope 7 lowered to the slope 1 is held by the second temporary structure 28, A second jig 30 similar to the jig 20 may be attached to the temporary structure 28. The second temporary structure 28 is installed, for example, on the ground (convex portion) 31 projecting in the middle of the slope 1, and the second temporary structure 28 holds the middle of the rope 7 so that the rope 7 Is installed to prevent rubbing in the middle of the protrusion 31. The second temporary structure 28 includes a plurality of support members 32 fixed to the ground near the convex portion 31 and a rod-shaped member 33. The rod-shaped member 33 is disposed sideways and is fixed to each column member 32 by a clamp or the like (not shown). A second jig 30 according to the present invention is attached to the rod-shaped member 33. The jig 30 has the same configuration as that of the jig 20, is attached to the through hole 21 with a bar-shaped member 33 penetrating, and is provided between the column members 32 so as to be movable along the bar-shaped member 33. Then, the middle of the rope 7 is hung on the holding groove 22 of the jig 30 and lowered. According to this configuration, since the jig 30 holding the rope 7 can be moved along the rod-shaped member 33, the rope 7 can be smoothly moved in the lateral direction even if the operator 10 moves laterally. The operator 10 can easily move in the horizontal direction. Since the rope 7 is always securely held in the holding groove 22 of the jig 30, it is possible to prevent the rope 7 from rubbing against the rod-shaped member 33 and being damaged. Since the jig 30 is rotatably mounted around the rod-shaped member 33, the rope 7 can be prevented from rubbing against the holding groove 22 of the jig 30 and being damaged. By forming the flange portions 24 and 25 on the jig 30, it is possible to prevent the rope 7 from coming off from the jig 30, and further, the rope 7 comes into contact with the support member 32 and a clamp (not shown) and is damaged. Can be prevented.

  In addition, the installation location of the 2nd temporary structure 28 should just be the front surface of the slope 1, and is not limited to the convex part 31. FIG. Moreover, the installation location of the temporary structure 5 and the temporary structure 28 is not limited to one location, and the temporary structure 28 may be provided at a plurality of locations and the rope 7 may be held by a plurality of jigs 30.

  As shown in FIG. 6, the jig according to the present invention is configured to be divided into a plurality of members, and the rod-shaped member 16 is surrounded by the plurality of members, and the plurality of members are combined to be attached to the rod-shaped member 16. You may be able to do it. In this case, it is convenient because it can be easily attached to and detached from the rod-like member 16. The jig 35 illustrated in FIG. 6 can be divided into a first member 41 and a second member 42 by a plane passing near the center line of the through hole 36. The connecting surface 43 and the connecting surface 44 of the second member 42 are joined together to be assembled together.

  The jig 35 includes a cylindrical body 53 whose inner space is a through-hole 36, and flange portions 54 and 55 provided at both ends of the cylindrical body 53. Each flange part 54 and 55 is formed so that it may spread outside, so that it leaves | separates from the cylinder 53. FIG. In addition, both end portions of the cylindrical body 53 protrude outward at the center portion of the outer surface of each flange portion 54, 55. A space formed between the flange portions 54 and 55 is a holding groove 56 on the outer peripheral surface of the cylindrical body 53. Four reinforcing ribs 57 are provided on the outer surfaces of the flange portions 54 and 55. The reinforcing ribs 57 are formed on the outer side surfaces of the flange portions 54 and 55 so as to extend radially from the outer peripheral surface of the end portion of the cylindrical body 53, and the angle between the reinforcing ribs 57 is about 90 °. Are arranged in a cross shape. The jig 35 includes the first member 41 and the first member 41 along a plane including the central axis of the through-hole 36 and passing through substantially the center of the two reinforcing ribs 57 positioned on the opposite sides of the flange portions 54 and 55. The second member 42 is divided.

  In FIG. 6, the first member 41 includes a half cylinder 53 a constituting the lower half of the cylinder 53, a half flange body 54 a constituting the lower half of the flange portion 54, and a half constituting the lower half of the flange portion 55. And a flange body 55a. Semi-reinforcing rib bodies 57a and 57b are formed on the outer surface of the half flange body 54a at positions facing each other across the upper surface of the half cylinder body 53a. Semi-reinforcing rib bodies 57c and 57d are formed at positions facing each other across the upper surface of the body 53a. The connection surface 43 of the first member 41 is constituted by an upper surface portion of the semi-cylindrical body 53a and upper surface portions of the semi-reinforcing rib bodies 57a, 57b, 57c, and 57d. As shown in FIG. 7, four engagement pins 61 are provided on the connection surface 43. One engagement pin 61 is disposed on each upper surface portion of the semi-reinforcing rib bodies 57a, 57b, 57c, and 57d. The tip of each engagement pin 61 has a hook shape. Further, the connection surface 43 is provided with two protrusions 62 for positioning. The two protrusions 62 are provided at positions facing each other across the inner space (portion serving as the through hole 36) in the central portion of the upper surface of the half cylinder 53a.

  In FIG. 6, the second member 42 includes a half cylinder 53 b that constitutes the upper half of the cylinder 53, a half flange body 54 b that constitutes the upper half of the flange portion 54, and a half that constitutes the upper half of the flange portion 55. And a flange body 55b. Semi-reinforcing rib bodies 57e and 57f are formed on the outer surface of the half flange body 54b at positions facing each other across the upper surface of the half cylinder body 53b. Semi-reinforcing rib bodies 57g and 57h are formed at positions facing each other across the upper surface of 53b. The connection surface 44 of the second member 42 includes a lower surface portion of the half cylinder 53b and lower surface portions of the semi-reinforcing rib bodies 57e, 57f, 57g, and 57h. Further, as shown in FIG. 8, the connection surface 44 is provided with four engagement holes 71 for engaging the engagement pins 61. One engagement hole 71 is arranged on each lower surface portion of the semi-reinforcing rib bodies 57e, 57f, 57g, and 57h, and penetrates from the lower surface to the upper surface of the semi-reinforcing rib bodies 57e, 57f, 57g, and 57h. Is provided. Further, the connection surface 44 is provided with two holes 72 for engaging the protrusions 62. The two holes 72 are provided at positions facing each other across the inner space at the center of the lower surface of the half cylinder 53b.

  In such a configuration, the respective engagement pins 61 are inserted into the engagement holes 71, and the engagement pins 61 are respectively engaged with the top surfaces of the semi-reinforcing rib bodies 57e, 57f, 57g, and 57h. By doing so, the connection surface 43 of the first member 41 and the connection surface 44 of the second member 42 are connected to each other. Further, by inserting the protrusions 62 into the respective holes 72, the connection surface 43 of the first member 41 and the connection surface 44 of the second member 42 are positioned with respect to each other and reliably coupled. . By coupling the first member 41 and the second member 42 in this manner, the cylinder 53 is formed by the half cylinder 53a and the half cylinder 53b, and the inner peripheral surface of the half cylinder 53a and the half cylinder 53b are formed. A through-hole 36 is formed between the inner flange surface 54a, the flange portion 54 is formed by the half flange body 54a and the half flange body 54b, and the flange portion 55 is formed by the half flange body 55a and the half flange body 55b. The semi-reinforcing rib body 57a and the semi-reinforcing rib body 57e, the semi-reinforcing rib body 57b and the semi-reinforcing rib body 57f, the semi-reinforcing rib body 57c and the semi-reinforcing rib body 57g, and the semi-reinforcing rib body 57d and the semi-reinforcing rib body. As a result of 57h being coupled to each other, an integral reinforcing rib 57 is formed.

  When the jig 35 is attached to the rod-shaped member 16, each engagement pin 61 is removed from the engagement hole 71, and the first member 41 and the second member 42 are separated, and the half cylinder 53a and the half cylinder are separated. The first member 41 and the second member 42 are arranged on both sides of the rod-shaped member 16 so as to surround the outer surface of the rod-shaped member 16 by 53b. Then, each engagement pin 61 is engaged with the engagement hole 71. As a result, the through hole 36 is formed between the half cylinder 53a and the half cylinder 53b, and the rod-like member 16 is passed through the through hole 36. The connection surface 44 of the member 42 is coupled. Thus, the jig 35 can be easily attached to the rod-like member 16. Further, when the jig 35 is removed from the rod-shaped member 16, the first member 41 and the second member 42 can be separated by simply removing each engaging pin 61 from the engaging hole 71, and can be easily removed. be able to. That is, when the jig 35 is attached to or removed from the rod-shaped member 16, it is not necessary to pass the jig 35 from the end of the rod-shaped member 16, so that the rod-shaped member 16 can be removed from the clamp or the temporary structure. It is not necessary to perform troublesome work such as disassembling the object, and it can be attached and detached in a short time. For example, the operation of replacing the jig 35 with another rod-shaped member can be easily performed while the rod-shaped member is held by a clamp or the like, and the workability is good. The jig may be divided into three or more members.

  In the jig 35 according to the present invention, the through hole 36 is preferably formed from the bottom of the holding groove 56 to the outside. If it does in this way, the jig | tool 35 can be hold | maintained to the rod-shaped member 16 in the stable state. For example, in the jig 35 shown in FIG. 9, when the through hole 36 is not formed outside the bottom of the holding groove 56, that is, the end of the cylindrical body 53 does not protrude from the base end of the flange portion 54. In this case, when the rope moves to the flange portion 54 side in the holding groove 56, the flange portion 54 is pushed by the rope and tilts toward the rod-like member, and the flange portion 55 side of the through hole 36 is separated from the rod-like member. There is a possibility that the entire tool 35 is inclined with respect to the rod-shaped member. On the other hand, if the end portion of the cylindrical body 53 is projected from the base end portion of the flange portion 54, the end portion of the through hole 36 comes into contact with the rod-like member when the flange portion 54 is pushed by the rope. , The jig 35 can be prevented from tilting. Therefore, the jig 35 can be stabilized by forming the through hole 36 to the outside from the bottom of the holding groove 56. Further, since the tilt of the jig 35 is prevented, the lateral movement and rotation of the jig 35 along the rod-like member 16 is performed smoothly. For the same reason, it is preferable that the end portion of the cylindrical body 53 is protruded at the base end portion of the flange portion 55, and the end portion of the through hole 36 is protruded outside the bottom portion of the holding groove 56. The length L in the central axis direction of the through hole 36 is preferably about twice or more, more preferably about three times the outer diameter (inner diameter of the through hole 36) φ of the rod-like member 16. In this way, the tilt of the jig 35 can be more effectively prevented, and the lateral movement of the jig 35 can be further smoothed.

It is explanatory drawing which showed the equipment of slope protection construction. It is explanatory drawing which showed the structure of the temporary structure. It is a perspective view of a jig. It is a perspective view of the jig concerning another embodiment. It is a perspective view of the equipment of slope protection construction concerning another embodiment. It is a perspective view of the jig concerning another embodiment. It is a perspective view of the 1st member in the jig concerning another embodiment. It is a perspective view of the 2nd member in the jig concerning another embodiment. It is sectional drawing of the jig | tool concerning another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slope 3 Tachiki 5 Temporary structure 7 Rope 10 Worker 16 Bar-shaped member 20 Jig 21 Through-hole 22 Holding groove 23 Cylindrical part 24, 25 Flange part

Claims (3)

A method in which a rope supported on an arbitrary fulcrum is lowered to a slope, and an operator hangs on the rope while working on the slope.
A bar-like member is installed beside the slope or above the slope,
A jig that is movable along the rod-shaped member is inserted through the rod-shaped member,
A slope working method, wherein the rope is lowered to the front face of the slope through the jig by holding the rope in a holding groove provided on the peripheral surface of the jig. The jig includes a cylindrical body having a through-hole penetrating the rod-shaped member,
The holding groove is formed on a peripheral surface of the cylindrical body,
The slope working method according to claim 1, wherein flanges are provided at both ends of the cylindrical body. The jig is configured to be divided into a plurality of members,
  3. The slope working method according to claim 1, wherein the bar-shaped member is surrounded by the plurality of members, and the plurality of members are coupled to each other to be attached to the bar-shaped member. .

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