JP2002180464A - Anchor tendon structure of permanent anchor and packer member thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid increases in the diameter and cost of a water sealing portion. SOLUTION: A packer member 14 is formed as a packer made of a continuous length of cloth formed by sewing together the rear end 14-1r of an expansible first cloth packer 14-1 having the property of allowing grout to leak out and the front end 14-2f of a non-expansible second cloth packer 14-2 having the property of allowing almost no grout to leak out. The packer member is formed into a length that can cover at least the anchored length portion L1 of an anchor tendon 12. The required lengths of the anchored length portion L1 and the free length portion L2 of the anchor tendon are continuously covered with the packer member 14 having the first cloth packer 14-1 sealed at its end and disposed at the front end of the anchor tendon 12, and the front end 40a of a grout hose 40 passed through a free-length sheath 22 is disposed to be capable of communicating with the interior of the packer member and the rear end 14-2r of the second cloth packer 14-2 located behind the anchor tendon is sealed and fixed around the free-length sheath as a water sealing process is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention tensions a tendon of an uncurtain don inserted and fixed in an anchor hole,
The present invention relates to a permanent anchor uncurtain-don structure for introducing and transmitting a load generated by this tension from the anchor head to a target ground, and a packer member suitable for use in the construction of the permanent anchor.

[0002]

2. Description of the Related Art For example, an anchor rod having a steel strand or the like as a tendon is inserted into an anchor hole, and a fixed length of a fixed length is fixed by grout. A so-called permanent anchor, which is fixed and fixed, is generally constructed and constructed as a structure for stabilizing the ground, the bedrock or the like, or reinforcing the same.

By the way, the grout for the fixing length portion is as follows.
Usually, this is performed by pressurizing injection and filling of a grout material such as cement milk into the anchor hole. However, in the case where the anchor is to be applied to a ground with large gaps of soil particles or a bedrock with cracks, etc., the grout material leaks from the gaps in the anchor hole peripheral wall, cracks, etc., and is lost,
Not only cannot efficient grouting be performed, but also there is a possibility that the consolidation strength due to the grout and, consequently, the fixing strength may be reduced.

[0004] Therefore, as disclosed in, for example, JP-A-11-200365, a predetermined length on the leading end side corresponding to the fixing length portion of the uncurtain-don is covered with a cloth packer, and a grout material is applied inside the cloth packer. There has been provided a construction method capable of preventing the grout material from overflowing or leaking out from the anchor hole by performing pressure injection.

According to such a configuration, since overflow and leakage of the grout material in the fixing length portion can be prevented, the fixing is stabilized and the fixing strength is sufficiently enhanced.

[0006]

SUMMARY OF THE INVENTION Here, the above-mentioned Japanese Patent Application Laid-Open
In the known method disclosed in 11-200365 publication,
As a cloth packer for the fixing unit, a general cloth packer having elasticity as a woven fabric of nylon yarn and almost no leaking property of a grout material is used. However, this kind of general cloth packer has little elasticity,
When using such a cloth packer, since it is inferior to the irregularity of the peripheral wall of the anchor hole,
A grout is required on the outside of the cloth packer, in addition to the grout for the inside of the cloth packer, in order to obtain reliable consolidation and fixing, and to fill the gap between the unevenness of the peripheral wall of the anchor hole and the cloth packer.

That is, even if the fixing portion is covered with a cloth packer, individual grouts are required inside and outside the fixing portion. Therefore, a known method of covering the fixing portion with a general cloth packer is required. Is likely to cause an increase in man-hours and, consequently, a decrease in workability.

For this reason, in this type of construction method, a special cloth packer made of, for example, a cloth having elasticity and leaking out of a grout material is used as a packer member for the fixing portion. .

[0009] With such a special cloth packer having elasticity and leakage of the grout material, expansion following the irregularities of the peripheral wall of the anchor hole can be easily obtained under the elasticity. Therefore, it is possible to fill the gap with the peripheral wall of the anchor hole without grouting to the outside of the cloth packer.

[0010] Further, since the texture is appropriately expanded by the expansion of the grout material due to the pressure injection, leakage of the grout material through the texture is obtained by the special cloth packer. Then, the leaked grout material goes around the outer peripheral surface of the cloth packer and enters between and solidifies with the peripheral wall of the anchor hole, so that the leaked grout material solidifies the cloth packer to the peripheral wall of the anchor hole. Since it functions as a bond, further enhancement of its bonding strength can be automatically secured by this special cloth packer.

Although this special cloth packer has the property of leaking grout material, so-called clogging caused by the leaked grout material occurs in the weave of the cloth packer. The pressurized state inside is secured and maintained without lowering. Therefore,
Considering this point, it is considered that this special cloth packer is suitable as a packer member for the fixing length part, and permanent anchors made of uncurtain don covering the fixing length part with this special cloth packer have actually been used in many construction sites. Has achieved many achievements.

The special cloth packer having the elasticity and the leaking property of the grout material is usually called a friction packer, and is called a non-leak packer having almost no elasticity and the leaking property of the grout material. Common cloth packers and their functions, properties and names.

By the way, the tip of the packer member covering the fixing length portion is usually sealed to the bottom of the bag, or accompanied by a water stopping process to a tip provided at the tip of the uncurtain don. Sealed under fixation. On the other hand, the rear end of this packer member is usually fixed and sealed with a water-stopping treatment on the peripheral surface of a so-called free-length sheath that covers the free-length portion of the uncurtain-don.

However, a friction packer (special cloth packer) suitable for covering the fixing length portion is inevitably thick due to the properties of the cloth. Since the sealing is usually performed by filling or applying a rubber-based water-stopping material or an epoxy-based putty material or the like, and then tightening the portion with a fastening material such as a number line, the free-length portion sheath is formed. At the rear end of the friction packer around which the water-blocking seal is formed, an increase in the diameter, that is, an increase in the diameter of the water-blocking seal is inevitable.

As described above, when the diameter of the watertight sealing portion of the friction packer, that is, the packer member, is increased, the uncurtain don has a projection-like projection on the peripheral surface thereof. When the uncurtain-don is inserted into the water-proof sealing portion, the water-tight sealing portion is easily caught and not only is not easily inserted, but also the safety of the water-tight sealing portion is liable to decrease.

In addition, grout is applied not only to the fixing length portion but also to the free length portion of the uncurtain don, thereby protecting the uncurtain don and thus the tension member, and filling the gap between the anchor holes as a whole. Strengthening,
In addition, an anchor method for stabilizing the soundness for a long time by dispersing the transmission path of the tensile strength is also performed as one form of the construction method of the permanent anchor.

In a so-called full length fixing type permanent anchor in which grout is applied to almost the entire length of the uncurtain don, since grout is applied to the free length portion in addition to the fixing length portion, the anchor hole periphery of the free length portion is provided. If there are gaps between the soil particles and cracks in the bedrock on the face wall, the leakage and loss of the grout material via these are inevitable as in the case where these are present in the anchoring length.

Therefore, in this full-length fixed type permanent anchor, it is considered that the fixed length portion and the free length portion of the uncurtain don are continuously covered with a packer member composed of a friction packer. However,
Since the friction packer is more expensive than a general non-leak packer, a significant increase in cost in the case where the anchoring portion and the free length portion of the uncurtain don are continuously coated with the friction packer is inevitable. .

An object of the present invention is to provide a permanent anchor uncurtain-don structure in which the diameter of the water-blocking sealing portion is increased and the cost is suppressed, and a packer member thereof.

[0020]

According to the present invention, there is provided a permanent anchor having an uncurtained structure according to the present invention, wherein the first anchor has elasticity and leakage of grout material.
The rear end of the cloth packer and the front end of the second cloth packer having almost no elasticity and no leakage of the grout material are placed in a second position.
A property in which the first cloth packer is overlapped by a predetermined length under a partial interpolation of the first cloth packer with respect to the cloth packer, and the first cloth packer and the second cloth packer are integrally connected to each other at the overlapping portion by sewing. The continuous long cloth packer having different portions is a packer member for covering the required length of the fixing length portion and the free length portion of the uncurtain don.

[0021] Then, the packer member in which the first cloth packer whose end is sealed is disposed on the end side of the uncurtain-don, covers the required length of the anchoring length of the uncurtain-don and the free length, and anchors the anchor. The tip of the grout hose, which is inserted and inserted into the free length sheath covering the free length portion of the tendon, is arranged so as to be able to communicate inside this packer member, and is located on the rear side of the uncurtain don. The rear end portion of the second cloth packer is sealed and fixed around the free length sheath with a water stopping process.

Further, according to the packer member of the permanent anchor of the present invention, the rear end portion of the first cloth packer having the elasticity and the leaking property of the grout material, the elasticity and the leaking property of the grout material are substantially provided. The front end of the second cloth packer does not overlap with the second cloth packer by a predetermined length under partial interpolation of the first cloth packer with respect to the second cloth packer. Then, by integrally connecting the first cloth packer and the second cloth packer by suturing at the overlapping portion, the packer member is inserted through the anchor hole as a continuous long cloth packer having portions having different properties. The length of the uncurtain don is such that at least the fixing length can be covered.

[0023]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 1, in the anchor anchor dowel structure 10 according to the present invention, at least the anchoring length L1 of the anchor rod 12 is a first cloth packer 14-1 and a second cloth which have different properties. The packer 14-2 is covered with a packer member 14 that is a continuous long-packed packer integrally connected.

The uncurtain don 12 binds a predetermined tendon material, for example, a plurality of PC strands 16 by binding with a spacer 18 or the like, for example, with a binding band 20 or the like,
For example, the ground, rock, etc. (hereinafter referred to as target ground, etc.) 23, which are the target ground, are covered with a tubular covering called a free length sheath 22 from substantially the rear end of the planned length to be the fixing length portion L1. It is formed so that it can be inserted and placed in the anchor hole 24 excavated at the same time, and that the PC stranded wire (tensile member) 16 can be tensioned at least after the grout is consolidated at the anchoring length portion L1.

The fixing length portion L1 shown in this embodiment
A free length sheath 22 extends from almost the rear end of the
In the uncurtain don 12 covered with the water, the distal end of the free length sheath 22 is sealed under a water stopping process by filling the inside thereof with a processing material 26 such as a rubber water stopping material or an epoxy putty material. The free end sheath is isolated from the inside and outside of the free length sheath by sealing the tip.

Here, as can be seen from FIG. 2 in addition to FIG.
Of the packer member 14 covering at least the fixing length portion L1
Combines the thick first cloth packer 14-1 with elasticity and grout material leakage with the second cloth packer 14-2 with almost no elasticity and grout material leakage. It is formed as a continuous long cloth packer having different properties.

As the second cloth packer 14-2, for example, a known general cloth packer in which a woven cloth made of plain weave such as nylon yarn is formed in a tubular shape or the like can be used.
On the other hand, as the first cloth packer 14-1, a cylindrical body made of a special thick cloth, such as a knitted cloth, having the same strength and elasticity as the second cloth packer 14-2 is used. Is done.

[0029] A general cloth packer conventionally used for the construction of a permanent anchor is generally called a non-leak packer because it is characterized by no leakage of grout material. On the other hand, a thick cloth packer made of knitted fabric or the like is usually called a friction packer, and is distinguished from a general cloth packer (non-leak packer) not only in function and performance but also in name. .

Packer member as continuous long cloth packer
Reference numeral 14 designates a rear end 14-1r of the first cloth packer (friction packer) and a front end 14-2f of the second cloth packer (non-leak packer) by partially connecting the first cloth packer to the second cloth packer. It is formed by overlapping a predetermined length under a proper interpolation, and by suturing the overlapping portion integrally with the sewing thread 28 over the entire circumference.

The rear end 14-1r of the first cloth packer and the second
The connection and suturing with the front end 14-2f of the cloth packer are performed, for example, as shown in FIG.
Of the first cloth packer as an overlapping portion of the second cloth packer side with respect to the rear end part 14-1r of the first cloth packer. Is preferred. According to such a configuration, the outer periphery of the stitched portion between the rear end portion 14-1r of the first cloth packer and the front end portion 14-2f of the second cloth packer is formed by the second cloth packer 14-r.
Since the sewing thread 28 is covered by 2, the protection of the sewing thread 28 from external force and the like can be ensured.

As can be seen from FIG. 1, the total length of the packer member 14 thus formed is the
The length is formed so as to cover at least the fixing length portion L1 and, if it is strong, the fixing length portion and the required length of the free length portion L2 can be continuously covered, and has a stretchability and the like. By arranging one cloth packer 14-1 on the front end side of the uncurtain don 12, this packer member is arranged.

As shown in the drawing, in the embodiment of the present invention, the first cloth packer 14-1 disposed on the front end side of the uncurtain don 12 is formed to have a length covering the entire fixing length L1 of the uncurtain don. Have been. In this embodiment, the first cloth packer 14 which is a front part of the packer member 14 is used.
Since -1 is a substantially cylindrical body, its front end 14-1f
Is inserted, for example, into the tip tool 30 of the uncurtain don 12 provided at the tip of the PC steel strand 16, and is sealed and fixed to the tip tool with a predetermined water stopping process. Then, a rear end portion 14-2r of the second cloth packer 14-2, which is a rear portion of the packer member 14, is overlapped on the peripheral surface of the free length sheath 22, and a rubber-based waterproof material, an epoxy-based putty material, etc. The packing member is arranged with respect to the uncurtain don 12 by forming a water-stop sealing portion 36 formed by filling the processing material 32 with the water-stopping material 32 and tightening with a fastening material 34 such as a number line at the rear end. Installed and fixed.

As shown in FIG. 1, the anchor rod 12 formed in this manner is similar to the conventional anchor method,
After the excavation of the anchor hole 24 in the target ground 23 or the like, the anchor hole 24 is inserted and arranged in the anchor hole from the tip end side serving as the anchoring length L1. Then, after the insertion and placement of the uncurtain don 12, grout is applied to the fixing length portion L1, that is, the inside of the packer member 14.

The grout, that is, the filling of the grout material 38 by pressurized injection into the inside of the packer member 14 is performed by inserting the tip end 40a into the packer member and inserting it into the free length sheath 22,
This is performed by a penetrated grout hose 40. And
After confirming that the specified amount of pressurization has been reached, the pressure injection of the grout material 38 is terminated, and after the grout material solidifies, the PC steel strand 16 is pulled and fixed with a predetermined tensile load by a conventional method. Thereby, the construction of the permanent anchor by the uncurtain don 12 is completed.

As described above, in the present invention, the packer member 14 is a continuous long cloth formed by integrally connecting the thin second cloth packer 14-2 behind the thick first cloth packer 14-1. Formed as a packer. That is, it is sufficient if the water-stopping sealing portion 36 formed on the peripheral surface of the free length sheath 22 is formed at the rear end portion 14-2r of the thin second cloth packer. As a result, an increase in the diameter of the water-stop sealing portion to be sealed and fixed is reliably prevented.

As described above, by suppressing the diameter of the water-stopping sealing portion 36, the thick first sealing member suitable for the packer member for the fixing long portion can be obtained.
Even in the uncurtain don 12 having the cloth packer 14-1, since the formation of the knob-shaped protrusion on the peripheral surface is eliminated,
Insertion of the anchor rod into the anchor hole 24 is facilitated. In addition, since the breakage of the water stop sealing portion 36 due to the hooking is sufficiently prevented, the safety of the water stop sealing portion is surely improved.

Further, since the connection between the first cloth packer 14-1 and the second cloth packer 14-2 is made by sewing, it is possible to reliably prevent the diameter of the stitched portion from increasing.

Further, the packer member 14 is made of a thin second material having almost no elasticity and little leakage of the grout material 38.
Although the cloth packer 14-2 is provided on the rear end side, the fixing length L1 of the uncurtain don 12 is the first cloth having the elasticity disposed on the front end side and the leakage property of the grout material 38. Covered by packer 14-1. In other words, the high strength required as a packer member for the fixing length portion, the diameter of the peripheral wall of the anchor hole 24, the expansion and contraction following the irregularities, or the leakage of the grout material between the packer member and the anchor hole peripheral wall. The special cloth packer (friction packer), which has achieved a number of achievements as a packer member for the fixing length section, that is, it can be sufficiently secured without any difference from the use of the first cloth packer alone. Also in the present invention, the consolidation strength by grout of the uncurtain don 12 with respect to the peripheral wall of the anchor hole 24, and eventually, the fixing strength are reliably kept high.

Here, in the embodiment of the present invention, a configuration in which the entire fixing length portion L1 of the uncurtain don is covered by the first cloth packer 14-1 is exemplified.
It is sufficient to cover the fixing length portion of the uncurtain don with the entire packer member 14 which is integrally connected to the second cloth packer 14-2 to the cloth packer. The present invention is not limited to this configuration using a cloth packer. For example, as shown in FIG. 3, a stitched portion between a first cloth packer rear end 14-1r and a second cloth packer front end 14-2f may be
It may be arranged within the range of the fixing length.

Incidentally, the rear end of the first cloth packer as described above.
According to the configuration in which the stitched portion between the 14-1r and the front end 14-2f of the second cloth packer is arranged within the range of the fixing length L1, the length of the expensive first cloth packer can be sufficiently reduced. In addition, the cost of the packer member 14 for covering the fixing length portion of the uncurtain don 12 is reduced.

In the above-described embodiment, the permanent anchor for grouting only the fixing length L1 of the anchor rod 12 is exemplified. However, the present invention is not limited to this. For example, in addition to the fixing length, The present invention is also applicable to a so-called full-length fixed type permanent anchor in which grout is applied to a free length portion L2 extending rearward.

As shown in FIG. 4, in this permanent anchor of the full length anchoring type, the anchoring length L
1, and the free length portion L2 are covered with the packer member 14. In this case, the packer member 14 has a fixing length L1.
A first cloth packer 14-1 having a length capable of covering the free length L2, and a second cloth packer 14-1 having a length capable of covering the free length L2.
-2, the rear end, that is, the rear end 14-2r of the second cloth packer is provided around the free length sheath 22 around the free length sheath 22 in the same manner as in the above-described embodiment. Sealed and fixed under formation.

Then, under the pressure injection of the grout material 38 through the grout hose 40, the fixing length portion L1 and the free length portion L2 of the uncurtain don 12 are continuously formed into grout.

Even in such a configuration, the grout material 38
Is filled under pressure into the packer member 14, and the first cloth packer 14-1 having the elasticity and the leakage property of the grout material is arranged in the fixing length portion L1, so that the Ensuring high fixing strength in the fixing length portion can be obtained in the same manner as in the above-described embodiment.

According to such a configuration, even if there is a gap between soil particles, a crack in rock or the like in the peripheral wall at the free length portion L2 of the anchor hole 24, the grout material is passed through these. 38 can be prevented from leaking or losing, protecting the uncurtained don 12 and strengthening the ground by filling the gap between the anchor holes as a whole, and long-term stability of soundness by dispersing the transmission path of tensile strength And so on.

Further, the free length portion L2 is replaced with an inexpensive second cloth packer.
Since coating with 14-2 is sufficient, by applying the present invention to the uncurtain don of this full-length anchoring permanent anchor, it is possible to reliably suppress an increase in the cost of the entire uncurtain don.

Further, since a separate cloth packer is provided for the fixing length portion L1 and the free length portion L2, even if the fixing length portion and the free length portion have different diameters, it is possible to cope with the different diameters. And easily.

In the above-described embodiment of the present invention, the uncurtain don 12 has a structure in which the PC steel strand 16 is used as a tension member and its free length L2 is covered with the free length sheath 22. However, since the tension load of the tension member after consolidation of the fixing portion L1 after the consolidation of the fixing portion L1 is sufficient to be transmitted and introduced under fixing, the uncurtainment don 12 of the fixing portion covered by the packer member 14 can be introduced. The configuration is not limited to this.

The embodiments described above are intended to explain the present invention, and do not limit the present invention in any way. All the modifications and alterations within the technical scope of the present invention are also included in this embodiment. It goes without saying that it is included in the invention.

[0051]

As described above, according to the present invention, the packer member has the thin second cloth packer behind the thick first cloth packer.
It is sufficient to form a water-stopping seal formed on the peripheral surface of the free length sheath at the rear end of the thin second cloth packer, which is formed as a continuous long cloth packer by integrally connecting the cloth packers. Therefore, an increase in the diameter of the water-stopping sealing portion that seals and fixes the rear end portion of the packer member is reliably prevented.

As described above, by suppressing the diameter of the water blocking portion, even in the case of the uncurtain don having the thick first cloth packer suitable for the packer member for the fixing long part, the bulge on the peripheral surface thereof is obtained. Since there is no longer a protruding portion, the insertion of the anchor rod into the anchor hole is facilitated. In addition, since the breakage of the water blocking portion due to the hooking is sufficiently prevented, the safety of the water blocking portion is surely improved.

Further, since the connection between the first cloth packer and the second cloth packer is performed by stitching, the diameter of the stitched portion can be reliably prevented.

Further, although this packer member has a thin second cloth packer on the rear end side which has little elasticity and little leakage of grout material, the fixing length portion of the uncurtain don is It is covered with a first cloth packer having elasticity and a grout material leaking property arranged on the front end side. In other words, the high strength required as a packer member for the fixing length portion, the diameter of the peripheral wall of the anchor hole,
And expansion and contraction following irregularities, or leakage of grout material between the packer member and the peripheral wall of the anchor hole, etc.
Since the cloth packer can be sufficiently secured without any difference from the use of the cloth packer alone, also in the present invention, the solidification strength of the uncurtain don to the peripheral wall of the anchor hole by the grout, and furthermore, the fixing strength are reliably maintained.

Then, the first cloth packer of the packer member serving as the continuous long cloth packer is formed to have a length covering at least the fixing length portion of the uncurtain don, and the second cloth packer of the packer member is formed of the uncurtain don. If it is formed so as to cover almost the free length, even if there are gaps between soil particles or cracks in the bedrock on the peripheral wall at the free length of the anchor hole, leakage of grout material through these will occur. The loss can be prevented, ensuring the protection of the uncurtain and strengthening the ground by filling the gaps between the anchor holes as a whole, and the long-term stability of the soundness by dispersing the transmission path of tensile strength. Can be attached.

Further, since it is sufficient if the free length portion is covered with an inexpensive second cloth packer, by applying the present invention to the uncurtain don of the full-length fixed type permanent anchor, it is possible to surely increase the cost of the uncurtain don as a whole. Can be suppressed.

Further, since the individual fabric packers are provided for the fixing length portion and the free length portion, even if the fixing length portion and the free length portion have different diameters, it is possible to reliably and easily cope with the different diameters. Can be done.

Further, a predetermined length of the front end of the second cloth packer is folded inward, and this folded portion is defined as an overlapping portion on the second cloth packer side with respect to the rear end of the first cloth packer. If the stitching and connection are performed by overlapping the outer surface of the first cloth packer, the outer periphery of the stitched portion between the rear end of the first cloth packer and the front end of the second cloth packer is covered with the second cloth packer. Therefore, protection of the sewing thread from external force and the like can be ensured.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of an anchor rod according to the present invention, showing an anchor rod structure of a permanent anchor.

FIG. 2 is a partially enlarged perspective view of a partly broken packer member according to the present invention.

FIG. 3 is a schematic longitudinal sectional view of an uncurtain don showing a modified example of the uncurtain don according to the present invention.

FIG. 4 is a schematic vertical cross-sectional view of an uncurtain don showing another modification of the uncurtain don structure according to the present invention.

[Description of Signs] 10 Uncurtain-don structure of permanent anchor 12 Uncurtain-don 14 Packer member 14-1 First fabric packer 14-2 Second fabric packer 22 Free length sheath 36 Waterproof sealing part 38 Grout material

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shichiro Haruyama 7 Higashihara, Kamikawarazaki, Tsukuba City, Ibaraki Pref. Moriya Steel Machinery Co., Ltd. Machine F-term (reference) 2D041 GA01 GB01 GC02 GC06 GC14 GD01

Claims (4)

[Claims] An anchor rod formed mainly of a tension member is inserted into an anchor hole, and at least a grout material is pressure-injected around a fixing length defined as a predetermined length on the tip side of the anchor rod. In the uncurtain-don structure of the permanent anchor, which can transmit and introduce the tensile load due to the tension of the tension member to the target ground where the anchor hole is formed by consolidating the portion with the peripheral wall of the anchor hole, the elasticity and the grout material A part of the first cloth packer with respect to the second cloth packer is formed by combining the rear end of the first cloth packer having the leakage property of the first cloth packer and the front end of the second cloth packer having almost no elasticity and the leakage property of the grout material. The first cloth packer and the second cloth packer are integrally connected by suturing at the overlapped portion at a predetermined length under proper interpolation. A continuous cloth packer having a portion that covers the fixed length of the uncurtain don and a packer member covering the required length of the free length, and the sealed first cloth packer at the tip of the pack is attached to the tip of the uncurtain don. By this arranged packer member, at least the anchoring length portion of the uncurtain don is covered, inserted into the free length sheath covering the free length portion of the uncurtain don, the tip of the grout hose arranged under the penetration ,
It is arranged so as to be able to communicate within this packer member,
An uncurtain don structure for a permanent anchor, wherein a rear end of a second cloth packer located on the rear side of the uncurtain don is sealed and fixed around a free length sheath with a water stop treatment. 2. The first fabric packer of a packer member serving as a continuous long fabric packer is formed to have a length covering at least the fixing length portion of the uncurtain don, and the second fabric packer of the packer member is formed of an uncurtain don. 2. An uncurtain-don structure for a permanent anchor according to claim 1, wherein the uncurtain-don structure has a length substantially covering the free length portion. 3. A front end of a first cloth packer having elasticity and a leaking property of a grout material, and a front end of a second cloth packer having almost no elasticity and a leaking property of a grout material. The first cloth packer is overlapped with the two cloth packers by a predetermined length under a partial interpolation, and the first cloth packer and the second cloth packer are integrally connected to each other at the overlapping portion by sewing. A permanent anchor packer member formed to have a length capable of covering at least the fixing length portion of the uncurtain don inserted into the anchor hole as a continuous long cloth packer having different portions. 4. The permanent anchor packer member according to claim 3, wherein the end of the second cloth packer is folded inward, and the folded end is sewn to an overlapping portion of the first cloth packer.