KR102243531B1 - Slope Protecting Structure and Protecting Method - Google Patents

Abstract

The safety of work can be improved while improving work efficiency.After construction, the load burden on the rope and anchor can be reduced, and furthermore, the slope protection structure that can perform full or partial reinforcement of the slope quickly and economically. A method of protection is disclosed. According to the present invention, a support pressure mooring device 50 having a support pressure fixing function of the net 20 and a mooring function of a plurality of ropes 30, 31 is used, and the slope is (10) After fixing the net (20), reinforcing by placing the ropes (30, 31) between the plurality of support pressure mooring ports (50), the load applied to a part of the ropes (30, 31) While being transmitted over the total length of the rope, it is distributed and supported by a plurality of anchors 40.

Description

Slope Protecting Structure and Protecting Method

The present invention relates to a slope protection structure and a protection method for preventing rockfall or soil collapse.

As a means of protecting slopes with the risk of falling rocks or landslides, cover the slope with metal nets or wire rope nets, and dedicate multiple points of metal nets or intersections of rope nets. Fixing with an anchor is disclosed in Patent Documents 1 and 2.

In Patent Document 3, it is described that the slope is covered with a metal net and a longitudinal and horizontal rope, and the intersection of the longitudinal and transverse rope and the metal net are fixed together to an anchor.

In addition, since the collapse risk of each pumice stone scattered on the slope is not uniform, it is necessary to partially reinforce the slope where the risk of collapse is high.

As a means for partially reinforcing the reinforced slope, Patent Document 3 discloses that the reinforcement range is covered with an auxiliary net and the surrounding of the auxiliary net is fixed with a dedicated anchor, and a reinforcing rope is wrapped around the reinforcement range. Patent Document 4 discloses that both ends of a reinforcing rope are fixed with a dedicated anchor.

The conventional slope protection technology has the following problems.

<1> In the double netting method described in Patent Literatures 1 and 2 in which the slopes are covered with a net by a metal net alone or a rope net alone, the collapse suppressing power of pumice stone and earth and sand is small.

<2> The double netting method described in Patent Documents 1 to 3 is a structure in which transmission of a load is prevented at a fixed point of a rope. For this reason, not only a high anchor strength is required for each anchor, but also a rope having a high tensile strength must be used, so there is room for improvement in terms of cost and workability.

<3> In the method of additionally reinforcing the slopes described in Patent Documents 3 and 4, since a large number of exclusive anchors must be additionally provided, the operation takes time and the reinforcement cost increases.

<4> After the slope is covered and protected, when the risk of pumice stone fall or soil collapse due to an earthquake or the like is increased, a desirable technology for rapid and economical response has not yet been proposed.

<5> In the conventional rewinding method, in which a fixing plate is installed on the anchor head, then the nut is tightened and the mesh is pushed to a slope to fix it. In order to replace the old rope with a new rope, the nut and the fixing plate must be removed at each anchor point. Because of the necessity, there is a problem that a lot of effort and time are required for maintenance of the respirator, and the rope does not exist until the replacement of the rope is completed, which is dangerous.

<6> This type of slope is rugged and the work environment is bad, and there is a risk of pumice stones falling during work.

Because workers have to work while hanging in the air, the work efficiency of the reinforcing process is poor, the work time is long, and the safety of work is threatened because workers are exposed to dangerous environments for a long time.

[Prior art]

Patent Document 1: Japanese Patent Laid-Open No. 2009-249823 (Fig. 6)

Patent Document 2: Japanese Patent Laid-Open Publication No. Hei 8-260423 (Figs. 1 and 2)

Patent Document 3: Japanese Patent Laid-Open Publication No. 2009-203681 (Figs. 6 and 11)

Patent Document 4: Japanese Patent Laid-Open No. 2000-27123 (Fig. 1)

The present invention has been implemented in view of the above points, and an object thereof is to provide at least one of the following slope protection techniques.

<1> Improve work safety while improving work efficiency on slopes.

<2> Reduce the load burden on the rope and anchor.

<3> The entire or partial reinforcement of the slope should be carried out quickly and economically.

The first invention of the present invention is a slope protection structure that restrains the surface of the slope by attaching a net covered over the protection range of the slope and a plurality of ropes that are intersected and laid on the net in an intersecting direction, to an anchor provided on the slope, A support pressure mooring port having both a support pressure fixing function of the net and a mooring function of the plurality of ropes is used, and the support pressure mooring port is a shovel capable of inserting an anchor head in the center. A pair of restraint plates having through holes, a mooring roller rotatably installed between the central portion of the restraint plate and forming an insertion hole through which the anchor head can be inserted, and a circumference of the restraint plate. A regulation pin is provided, and an insertion space through which a rope can be inserted is formed between the mooring roller and the regulation pin, and the insertion space has a size capable of inserting a plurality of ropes in the same space, and the regulation pin is the It has a function of preventing displacement of the rope inserted into the insertion space, and fixes the net overlooking the slope by a support pressure mooring port installed on the head of the anchor, and between the plurality of support pressure mooring ports used for fixing the net. At the same time as arranging the rope by mooring between both ends of the rope, both ends of the rope are fixed to the slope, and the load applied to a part of the rope through the net is transmitted over the total length of the rope, It is characterized in that the transmitted load is distributed to and supported by a plurality of anchors through the support pressure mooring port.

In the second invention of the present application, in the first invention, the ropes combined in the intersecting direction are any one of a combination of a single rope, a combination of a plurality of ropes, or a combination of a single rope and a plurality of ropes.

In the third invention of the present application, in the second invention, the rope combined in the cross direction is a combination of a longitudinal rope disposed in the longitudinal direction of the slope and a transverse rope disposed in the transverse direction of the slope.

In the fourth invention of the present application, according to the second invention, the ropes combined in the cross direction are vertical ropes arranged in the longitudinal direction of the slope, transverse ropes arranged in the transverse direction of the slope, and arranged in the oblique direction of the slope. It is characterized in that it is a combination of inclined ropes.

In the fifth invention of the present application, in the second invention, the rope combined in the crossing direction is a rope arranged in the longitudinal and transverse direction of the slope, and the longitudinal rope is previously installed on both left and right edges of the net. It is done.

The sixth invention of the present application is to cover the slope with a net after providing anchors at a plurality of points on the slope, to fix the net on the slope by obtaining a reaction force from the anchor to the slope, and to lay a plurality of ropes combined with the net in the crosswise direction. As a method of protecting the slope, a support pressure mooring port having both a support pressure fixing function of the net and a mooring function of the plurality of ropes is used, and the support pressure mooring port is a shovel capable of inserting the anchor head in the center. A pair of restraint plates having through holes, a mooring roller rotatably installed between the central portion of the restraint plate and forming an insertion hole through which the anchor head can be inserted, and a circumference of the restraint plate. A regulation pin is provided, and an insertion space through which a rope can be inserted is formed between the mooring roller and the regulation pin, and the insertion space has a size capable of inserting a plurality of ropes in the same space, and the regulation pin is the It has a function of preventing displacement of the rope inserted into the insertion space, and the net reinforcing process of fixing the net having the sloped surface to the slope by the support pressure mooring port attached to the head of the anchor, and the plurality of the above used for fixing the net A rope post-installation process is provided in which a rope is placed by mooring between both ends of the rope between the supporting pressure mooring ports of the rope, and at the same time, both ends of the rope are fixed to the slope and combined in a cross direction to the net to lay the rope, It is characterized in that the surface of the slope is restrained by a plurality of ropes capable of transmitting a load applied to the net and a portion of the rope fixed by receiving a reaction force from the anchor over the total length of the rope.

In the seventh invention of the present application, in the sixth invention, a rope is arranged by mooring between both ends of the additional rope between the plurality of support pressure mooring ports, and at the same time, both ends of the additional rope are fixed to the slope. It characterized in that it further comprises an installation process after the addition of the rope.

In the eighth invention of the present application, in the sixth or seventh invention, the rope combined in the crossing direction is any one of a combination of a single rope, a combination of a plurality of ropes, or a combination of a single rope and a plurality of ropes. It is done.

In the ninth invention of the present application, in the eighth invention, the rope combined in the cross direction is a combination of a longitudinal rope disposed in the longitudinal direction of the slope and a transverse rope disposed in the transverse direction of the slope.

In the tenth invention of the present application, in the eighth invention, the ropes combined in the cross direction are vertical ropes arranged in the longitudinal direction of the slope, transverse ropes arranged in the transverse direction of the slope, and the ropes arranged in the oblique direction of the slope. It is characterized in that it is a combination of inclined ropes.

In the eleventh invention of the present application, in the eighth invention, the rope combined in the cross direction is a rope arranged in the longitudinal and transverse direction of the slope, wherein the longitudinal rope is previously installed on both left and right edges of the net, and It is characterized in that after fixing the net on which the directional rope is installed to the slope, the transverse rope is later installed on the net.

The present invention exhibits at least one of the following effects.

<1> After the pre-fixing work over the slope is quickly performed using the support pressure mooring port, the slope is restrained, and the rope is placed between the plurality of support pressure mooring ports.

Therefore, it is possible to perform the post-installation work of the rope in a short time and with high efficiency in a safe environment.

<2> By using the support pressure mooring, the load acting on a part of the rope can be transmitted over the total length of the rope, and furthermore, the load acting on a part of the rope can be distributed and supported by a plurality of anchors.

Accordingly, it is possible to reduce the load burden of the rope and the anchor, so that the ideal load burden is possible, and the restraining effect of the slope is improved as compared to the conventional reversing method.

<3> By appropriately selecting the number and arrangement direction of the ropes, it is possible to adjust the collapse suppressing force appropriately according to the size of the pumice stone existing on the slope and the risk of collapse.

<4> If the risk of collapse of a slope increases after construction, an additional rope can be placed over an arbitrary section by utilizing the previously installed anchor and the already installed support pressure mooring without providing an additional anchor.

Therefore, it is possible to quickly and economically perform the entire reinforcement or partial reinforcement of the slope.

<5> Since the replacement of the rope partially deteriorated with aging can be easily performed without affecting the whole, the maintenance of the rope is simple, and the maintenance cost can be reduced.

<6> Since the supporting pressure mooring tool serves as both a fixing tool for a net and a mooring tool for a rope, it is not necessary to use two types of fixing devices as in the prior art.

1 is a plan model diagram of a slope protection structure according to the present invention.
Fig. 2 is an enlarged perspective view of a fixing portion of a net in which a part of a supporting pressure mooring port is broken.
3 is a longitudinal sectional view of a fixing portion of a net using a support pressure mooring tool.
Fig. 4 is an explanatory diagram of a reinforcing net construction method, in which (A) is a model diagram of an anchor process, and (B) is a model diagram of a net covering process and a fixing process.
5 is a horizontal cross-sectional view of a supporting pressure mooring port and a mooring portion of a vertical and horizontal rope.
6 is a horizontal cross-sectional view of an outermost anchor and a fixing portion of an end portion of a longitudinal and transverse rope.
Fig. 7 is a plan model diagram of a slope protection structure in which the number of vertical and horizontal ropes are installed and the installation direction is selected to adjust the collapse suppression force.
8 is a plan model diagram of a slope protection structure according to Modification Example 2 using a net provided with a longitudinal rope.
Fig. 9 is a plan view of a place where a net provided with a vertical rope in Modified Example 2 is butted.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1> Summary of slope protection structure

Referring to Figure 1, the slope protection structure according to the present invention, the net 20 covering the slope 10 to be protected where the pumice stone 11, etc. is present, is laid apart at predetermined intervals on the surface of the net 20 A plurality of vertical and horizontal ropes (30, 31), anchors 40 fixed at a plurality of points on the slope 10, and anchors 40, while fixing the net 20 while fixing the vertical and horizontal ropes (30, 31). It is provided with a support pressure mooring port 50 to determine the position by locking.

The longitudinal and transverse ropes 30 and 31 and the net 20 are connected by a connecting means 32 such as a connecting coil or the like.

In the present invention, the anchor 40 and the support pressure mooring port 50 are used in combination to fix the net 20 in the slope 10 in advance, and the support pressure mooring port 50 used for fixing the net 20 ) To the surface of the net (20) vertical and horizontal ropes (30, 31) to be installed in a safe environment after.

<2> Net

The net 20 for installing the rope on the slope 10 to be protected is a net-shaped material with excellent plasticity, high strength, and weather resistance. For example, high-strength tortoiseshell type metal net, rhombic metal net, resin coated metal net, etc. Non-metallic nets, such as a metal metal net, a resin net, a resin net made of a high-strength fiber as a core material, and a fiber net, are included.

<3> rope

The vertical rope 30 and the transverse rope 31 are continuous metal or non-metallic ropes having a length equal to or greater than the section distance of the pair of anchors 40 and 40, and are installed on the surface of the net 20.

Between both ends (middle part) of each longitudinal and transverse rope (30, 31) is moored in a plurality of support pressure mooring ports 50, respectively, and the ends of each longitudinal and transverse rope (30, 31) are through the support pressure mooring port (50). It is directly fixed to the outermost anchor 40 or directly fixed to the outermost anchor 40.

The ends of each of the longitudinal and transverse ropes 30 and 31 need only be fixed to the slope 10.

Mooring between the both ends of each longitudinal and transverse rope (30, 310) in the support pressure mooring (50) allows the load acting on a part of each longitudinal and transverse rope (30, 31) to be transmitted over the total length of the rope. It is to do.

<4> support pressure mooring

The support pressure mooring port 50 is a combined jig for mooring a plurality of vertical and horizontal ropes 30 and 31 while the net 20 pushes and fixes a plurality of points to the slope 10, and is installed on the head of the anchor 40 Fix it.

Support pressure moorings 50 are not limited in the arrangement direction or number of moorings of the vertical and horizontal ropes 30 and 31, and any number of moorings may be arranged in any direction across the heads of the plurality of anchors 40. . It is possible to arbitrarily set the arrangement direction or the number of moorings of the vertical and horizontal ropes 30 and 31 in order to partially adjust the collapse suppression force according to the situation of the slope 10.

Referring to the support pressure mooring unit 50 illustrated in Figs. 2 and 3, the support pressure mooring unit 50 is arranged to face each other, and a pair of restraining plates 51 having insertion holes 51a and 52a in the center. ,52), between the mooring roller 53 rotatably installed between the central portions of the restraining plates 51 and 52 and having an insertion hole 53a formed therein, and the circumferential portions of the restraining plates 51 and 52 It is provided with a temporary regulation pin 54.

An insertion space 55 through which a rope can be inserted is formed between the mooring roller 53 and the regulation pin 54. The size of the insertion space 55 is appropriately selected in consideration of the number of insertions of the rope.

The support pressure mooring hole 50 may insert the head of the anchor 40 through the plurality of insertion holes 51a, 52a, and 53a.

<4.1> restraint plate

The restraint plates 51 and 52 have both a function of pressing the surface of the net 20 and a function of preventing displacement of the vertical and horizontal ropes 30 and 31 by cooperation with the regulation pin 54.

The lower restraint plate 51 may be in a form capable of acupressure against the net 20, and the upper restraint plate 52 cooperates with the regulation pin 45 to prevent displacement of the ropes 30 and 31. This is enough.

In the drawings, the restraining plates 51 and 52 have the same annular shape, but there is no restriction on the planar shape of the restraining plates 51 and 52 and may be rectangular.

<4.2> Mooring roller

The mooring roller 53 is a roller that supports the shaft to the anchor 40 so as to be rotatably supported, and has a mooring function of the longitudinal and transverse ropes 30 and 31.

In this example, the mooring roller 53 has a sheave shape having an annular groove, but may be a uniform diameter without grooves.

The mooring roller 53 is rotatably provided to improve the transmission of the load over the total length of each longitudinal and transverse rope (30, 31), and friction between the mooring roller (53) and the longitudinal and transverse ropes (30, 31) This is to reduce the resistance.

<4.3> regulation pin

The regulation pin 54 has a function of preventing the vertical and horizontal ropes 30 and 31 from shifting by cooperation with the restraining plates 51 and 52. The number of regulation pins 54 is appropriately selected according to the number of mooring ropes, and at least one may be provided.

<5> anchor

The anchor 40 is for fixing by pulling the support pressure mooring port 50 taut, and for example, various known anchors such as a rock bolt, a ground anchor, and a rope anchor can be applied. I can.

In this example, a state in which a lock bolt tightened with a nut 41 is applied as the anchor 40 is shown.

[Construction method]

Next, a method of constructing a reinforcing net will be described.

<1> Anchor process

As shown in Fig. 4A, a plurality of anchors 40 are provided on the slopes 10 dotted with pumices 11 and the like.

In the present invention, it is possible to arbitrarily select the number and direction of arrangement of the vertical and horizontal ropes (30. 31) to partially adjust the collapse suppression force according to the situation of the slope (10), so it is necessary to equalize the installation interval of the anchors (40). There is no, and it is just an appropriate interval according to the site situation.

<2> net coating process

As shown in Fig. 4(B), the surface of the slope 10 is covered with a net 20 over the protection range, and the head of the anchor 40 is inserted through the mesh of the net 20.

<3> net fixing process

Attachment scattered on the slope 10 by installing a support pressure mooring port 50 on the head of the anchor 40 protruding from the surface of the net 20 and fixing the circumference of the net 20 and a plurality of points inside the net 20 (11) Constrain the displacement of the back.

The fixing structure of the net 20 using the support pressure mooring device 50 will be described in detail with reference to FIGS. 2 and 3.

A nut 41 inserted into the head of the anchor 40 by inserting the insertion holes 51a, 52a, 53a of the support pressure mooring port 50 into the head of the anchor 40, and screwed to the head of the anchor 40 protruding from the upper restraint plate 51 It is possible to fix a plurality of points of the net 20 to the slope 10 so as not to be displaced by only the tightening operation.

<4> Rope post installation process

As shown in Fig. 1, while mooring at each support pressure mooring port 50 installed on the head of the anchor 40, the vertical and horizontal ropes 30, 31 are arranged on the surface of the net 20, and at the same time, the vertical and horizontal ropes ( The ends of the 30, 31) are fixed to the outermost anchor 40 through the support pressure mooring port 50, and the longitudinal and transverse ropes 30 and 31 are later installed on the surface of the net 20.

Finally, by connecting between the longitudinal and transverse ropes (30, 31) and the net (20) with a connecting means (32), the reconstruction work of the slope (10) is terminated.

5 shows a mooring portion of each of the longitudinal and transverse ropes 30 and 31 and the support pressure mooring port 50.

Each of the vertical and horizontal ropes 30 and 31 that are sequentially inserted through and moored through the insertion space 55 of the support pressure mooring port 50 adjacent to each other are mooring rollers 53 and a regulation pin ( 54) and the upper restraint plate 52 prevent displacement.

Both ends of each of the longitudinal and transverse ropes 30 and 310 are fixed to the slope 10.

In FIG. 6, both ends of each of the longitudinal and transverse ropes 30 and 31 are wound around the mooring roller 53 of the supporting pressure mooring port 50 attached to the outermost anchor 40 and fixed with a clip 33, It can also be directly fixed to the outermost anchor 40.

In addition, when mooring the transverse rope 31 to the support pressure mooring port 50, it is preferable to place the transverse rope 31 on the higher side of the slope of the anchor 40, that is, the upper side of the mooring roller 53. Do. By arranging the transverse rope 31 in this way, the load toward the lower side of the slope acting on the transverse rope 31 can be transmitted to the anchor 40 with high efficiency through the mooring roller 53.

As described above, by simply inserting the vertical and horizontal ropes 30 and 31 into each support pressure mooring port 50, the longitudinal and transverse ropes 30 and 31 are attached to the anchor 40 through the support pressure mooring port 50. It can be fixed by mooring the intersection of.

In the conventional reiteration process, the net and the rope were simultaneously fixed to the slope.

In contrast, in the present invention, since the safety of the slope 10 is secured by performing the work of fixing the net 20 in advance, the post-installation work of the longitudinal and transverse ropes 30 and 31 is performed in a short time under a safe environment. Can be done with.

In addition, since the support pressure mooring device 50 also serves as a fixing device for the net 20 and a mooring device for the longitudinal and transverse ropes 30 and 31, there is no need to separate the two types of fasteners as in the prior art.

<5> Number of ropes installed

In this example, a case in which each vertical and horizontal rope 30, 31 installed in combination in the cross direction is described is described, but the number of ropes constituting each vertical and horizontal rope 30, 31 is a combination of single ropes or multiple ropes. Any one of a combination of each other or a combination of a single rope and a plurality of ropes can be adopted.

[Disintegration inhibitory action]

Next, a description will be given of a fall-inhibiting action of the slope 10 by the net 20 provided with a rope on the slope 10 and the longitudinal and transverse ropes 30 and 31.

<1> Slope restraint support

In FIG. 1, the net 20 covered in the protection range of the slope 10 is fixed to the plurality of anchors 40 through the support pressure mooring port 50, and is disposed on the surface side of the net 20. The longitudinal and transverse ropes 30 and 31 for reinforcement are also fixed to the plurality of anchors 40 through the support pressure mooring port 50.

The net 20 and the vertical and horizontal ropes 30 and 31 receive a reaction force from the anchor 40 and restrain the slope 10 to prevent the pumice stone 11 from falling.

<2> Support for distribution of load

The slopes 10 covered with the net 20 and the vertical and horizontal ropes 30 and 31 are divided into a plurality of units and are constrained in a range surrounded by four support pressure mooring ports 50 adjacent to each other vertically and horizontally.

Further, each of the longitudinal and transverse ropes 30 and 31 is moored in each supporting pressure mooring port 50 so that the load applied to a portion thereof can be transmitted over the total length of the rope.

Therefore, the load generated in a specific section is distributed and supported by a plurality of anchors 40 beyond a specific area, and the load acting on a part of the specific longitudinal and transverse ropes 30 and 31 through the net 40 is also applied to a specific longitudinal and transverse direction. Not only can it be distributed and transmitted over the total length of the ropes 30 and 31, but it is also possible to distribute and support all anchors 40 on which the longitudinal and transverse ropes 30. 31 are moored, so the specificity of the net 20 The load burden of each anchor 40 surrounding the area is greatly reduced.

In the present invention, in which the load transmission range is expanded using the support pressure mooring device 50, not only the net, but also the rope is prevented from collapsing compared to the conventional double mesh method in which load transmission is prevented at a fixed point with the anchor. It gets bigger.

<3> Adjustment of collapse inhibition power

Since the size and weight of the pumice stone 11 and the like are different from each other, the risk of collapse according to the situation of the slope 10 is different.

In the conventional net covering method, the strength of the metal net or rope used was matched to the maximum pumice stone 11, but in the present invention, the slope 10 The collapse inhibition power can be adjusted according to the different risk of collapse according to the situation of ).

7 shows an example of adjustment of the collapse inhibiting force.

In areas where the risk of collapse is low, the number of vertical and horizontal ropes (30, 31) is reduced, the spacing is expanded, and the use of low-strength ropes is used. In addition, in areas where the risk of collapse is high, the vertical and horizontal ropes (30, 31) are Increasing the number of arrangements, additional arrangements of the inclined ropes 33, narrowing the arrangement intervals of the ropes 30, 31, 33, and the use of high-strength ropes.

<4> additional installation of rope

After construction, the risk of collapse of the slope 10 may increase due to an earthquake or the like.

In this case, the entire reinforcement of the slope 10 or the slope ( Perform partial reinforcement of 10).

In the present invention, since there is no need to provide additional anchors or fixtures for additional purposes, reinforcement of the slope 10 after construction can be performed quickly and economically.

<5> Rope exchange

Between both ends of each of the longitudinal and transverse ropes (30, 31) is moored in a plurality of support pressure mooring port (50), the both ends of each of the longitudinal and transverse ropes (30, 31) is only fixed to the slope (10).

Therefore, when some of the plurality of vertical and horizontal ropes (30, 31) are deteriorated, for example, a new rope is placed along the old rope to fix it, and then the old rope is removed and removed. 30. 31) can be exchanged. It is also possible to arrange a new rope over the plurality of support pressure moorings 50 after the old rope is removed.

As such, since the exchange of the vertical and horizontal ropes 30 and 31 can be performed simply, maintenance of the vertical and horizontal ropes 30 and 31 is simple, and maintenance cost can also be reduced.

[Example 1]

Next, a modified example of the embodiment will be described, but in the description, the same parts as those of the embodiment are denoted by the same reference numerals, and detailed descriptions thereof will be omitted.

In the previous embodiment, a form of arranging and laying a plurality of ropes 30, 31, 33 on the surface of the net 20 in the longitudinal or transverse direction or in an inclined direction has been described, but the plurality of ropes are intersected in an inclined direction. You can also place it.

In short, a plurality of ropes may be combined in an intersecting direction and laid on the surface of the net 20.

In addition, only one of the longitudinal and transverse ropes 30 and 31 may be provided.

[Example 2]

In Figs. 8 and 9, a modified example in which a net 20A provided with a longitudinal rope 30 is used in place of the net 20 is shown.

<1> Net with longitudinal rope installed

Referring to the plan view with the side edges of the nets 20A and 20A in which the bell rope 30 is installed in FIG. 9, the net 20A is a net body 21 such as a high-strength tortoiseshell type metal net, and the net body It is constituted by a longitudinal rope 30 installed in advance over the total length of the side edge on both left and right edges of (21).

In this example, the wire at the side edge of the net body 21 is wound around the longitudinal rope 30 and connected, but may be connected using a separate connecting means, and the net body 21 and the longitudinal rope ( There are no special restrictions on the means of connection of 30).

<2> Construction method

<2.1> Anchor process

A plurality of anchors 40 are provided on the slope 10 dotted with pumice and the like.

<2.2> Net coating process

Nets (20A) with vertical ropes 30 are installed sequentially in the protected range of slopes 10 in the longitudinal direction, and the side edges of the nets (20A) with each of the types of ropes 30 adjacent to each other are facing each other. By connecting the place with a connecting means 22 such as a coiling wire, the net 20A has connectivity.

<2.3> Net fixing process

A support pressure mooring port 50 is installed on the head of the anchor 40 protruding through the net 20, and the slope 10 is restrained by fixing a plurality of locations of the net 20.

A support pressure mooring port 50 is installed on the head of the anchor 40 protruding from the side edge of the net 20A to fix a plurality of locations of the net 20A to the slope 10.

As shown in an enlarged scale in FIG. 9, in a place where the side edges of the net 20A in which the adjacent longitudinal ropes 30 are installed are facing each other, the support pressure mooring port 50 is provided across the adjacent longitudinal ropes 30 and 30. Fix it.

By fixing the net 20A on which the longitudinal rope 30 is installed to the slope 10, the installation process of the net 20A and the installation process of the longitudinal rope 30 are simultaneously performed.

<2.4> Rope post installation process

As shown in Fig. 8, while mooring at each supporting pressure mooring port 50 provided on the head of the anchor 40, the transverse rope 31 is placed on the surface of the net 20A, and at the same time, each transverse rope 31 The end of the net is fixed in the same manner as in the previous embodiment, and a transverse rope 31 is later installed on the surface of the net 20A.

In this example, by using the net 20A on which the vertical rope 30 is installed, it is necessary to perform the post-rope installation work only for the transverse rope 31. The workability of the installation process is better.

<3> collapse inhibitory action

The net 20 and the vertical and horizontal ropes (30, 31) cooperate to support the restraining and support action of the slope (10), and a part of the transverse rope (31) is provided with a support pressure mooring (50) ), and the collapse suppression force that adjusts the collapse suppression force according to the different collapse risk according to the situation of the slope 10 by appropriately selecting the number and installation direction of the horizontal rope 31 and the number of horizontal ropes 31 installed. Since the promoting action is the same as in the above-described embodiment, a description thereof will be omitted.

10 slopes
20 net
Net with 20A class rope installed
21 net body
22 Connection means
30 kinds of rope
31 transverse rope
32 Connection means
40 anchor
41 nuts
50 support pressure mooring
51 lower restraint plate
52 Upper Constraint Plate
53 mooring roller
54 regulatory pin
55 insertion space

Claims (11)

It is a slope protection structure that restrains the surface of the slope by attaching a net covered over the protection range of the slope and a plurality of ropes that are laid by combining the net in a crosswise direction to the anchor provided on the slope.
Using a support pressure mooring port having both a support pressure fixing function of the net and a mooring function of the plurality of ropes,
The supporting pressure mooring port is a pair of restraining plates having an insertion hole through which the anchor head can be inserted in the center, a mooring roller installed between the central part of the restraining plate and forming an insertion hole through which the anchor head can be inserted. , And a regulating pin interposed between the circumferential portion of the restraining plate, and forming an insertion space through which a rope can be inserted between the mooring roller and the regulating pin,
The insertion space has a size capable of inserting a plurality of ropes in the same space, and the regulation pin has a function of preventing displacement of the rope inserted into the insertion space,
The net covering the slope is fixed by a support pressure mooring port installed on the head of the anchor,
A rope is arranged by mooring between both ends of the rope between the plurality of support pressure mooring ports used for fixing the net, and at the same time, both ends of the rope are fixed to the slope,
A slope protection structure, characterized in that the load applied to a part of the rope is transmitted through the net over the total length of the rope, and the load transmitted to the rope is distributed to and supported by a plurality of anchors through the support pressure mooring port. .
The method of claim 1,
The slope protection structure, characterized in that the ropes combined in the intersecting direction are any one of a combination of a single rope, a combination of a plurality of ropes, or a combination of a single rope and a plurality of ropes.
The method of claim 2,
The slope protection structure, characterized in that the rope combined in the crossing direction is a combination of a longitudinal rope arranged in a longitudinal direction of the slope and a transverse rope arranged in a transverse direction of the slope.
The method of claim 2,
The slope protection structure, characterized in that the rope combined in the crossing direction is a combination of a longitudinal rope arranged in a longitudinal direction of the slope, a transverse rope arranged in a transverse direction of the slope, and an inclined rope arranged in an oblique direction of the slope.
The method of claim 2,
The slope protection structure, characterized in that the ropes combined in the cross direction are ropes arranged in the longitudinal and transverse direction of the slope, and the longitudinal ropes are previously installed on both left and right edges of the net.
This is a method of protecting the slope by covering the slope with a net after providing anchors at multiple points on the slope, securing the net reinforced on the slope by receiving reaction force from the anchor, and laying a plurality of ropes combined in the cross direction on the net. ,
Using a support pressure mooring port having both a support pressure fixing function of the net and a mooring function of the plurality of ropes,
The supporting pressure mooring port is a pair of restraining plates having an insertion hole through which the anchor head can be inserted in the center, a mooring roller installed between the central part of the restraining plate and forming an insertion hole through which the anchor head can be inserted. , And a regulating pin interposed between the circumferential portion of the restraining plate, and forming an insertion space through which a rope can be inserted between the mooring roller and the regulating pin,
The insertion space has a size capable of inserting a plurality of ropes in the same space, and the regulation pin has a function of preventing displacement of the rope inserted into the insertion space,
Net reinforcing step of fixing the net reinforcing the slope to the slope by the support pressure mooring port attached to the head of the anchor, and
A rope is placed by mooring between both ends of the rope between the plurality of support pressure mooring ports used for fixing the net, and at the same time, the rope is laid by fixing both ends of the rope to the slope and combining them in a crosswise direction to the net. It is equipped with a rope post-installation process,
The slope protection method, characterized in that the surface of the slope is constrained by a plurality of ropes capable of transmitting a load applied to the net and a portion of the rope fixed by receiving a reaction force from the anchor over the total length of the rope.
The method of claim 6,
It characterized in that it further comprises an additional post-installation step of a rope fixing both ends of the additional rope to the slope while arranging the rope by mooring between both ends of the additional rope between the plurality of support pressure mooring ports. Slope protection method.
The method according to claim 6 or 7,
The slope protection method, characterized in that the ropes combined in the intersecting direction are any one of a combination of a single rope, a combination of a plurality of ropes, or a combination of a single rope and a plurality of ropes.
The method of claim 8,
The slope protection method, characterized in that the rope combined in the crossing direction is a combination of a longitudinal rope arranged in a longitudinal direction of the slope and a transverse rope arranged in a transverse direction of the slope.
The method of claim 8,
The slope protection method, characterized in that the rope combined in the crossing direction is a combination of a longitudinal rope arranged in a longitudinal direction of the slope, a transverse rope arranged in a transverse direction of the slope, and an inclined rope arranged in an oblique direction of the slope.
The method of claim 8,
The rope combined in the cross direction is a rope arranged in the longitudinal and transverse direction of the slope, and the longitudinal rope is previously installed on both left and right edges of the net, and the net with the longitudinal rope installed is fixed to the slope and then in the transverse direction. Slope protection method, characterized in that the rope is installed after the net.

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