JPS5862298A - Fixing cartridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention is an automatic curing device consisting of a solid component and a liquid component.

The present invention relates to a fixing cartridge used for fixing a predetermined element 1, such as a fixing member such as a rock bolt or an anchor rod, in a hole in rock, concrete, etc. using a chemical composition.

In a hole drilled in rock, concrete, etc.

One method for fixing an element such as a fixing member such as a lock bolt or an anchor rod is to push a cartridge containing components of the self-curing composition into the perforation, and to attach a predetermined element to the perforation. A method is known in which the cartridge is destroyed by inserting it into the element, and a self-curing composition is filled around the element and cured.

Unexamined Japanese Patent Publication No. 54-54422, Special Publication No. 55-5QO4
Publication No. 66, etc. describes, as an example of using such a cartridge, a cartridge made of perforated plastic or paper to fix an element with a self-curing composition consisting of a solid component such as cement mortar and a liquid component such as water. A predetermined cement component is put into the cartridge using a cartridge.

A method has been disclosed in which, upon use, the cartridge is immersed in water to induce a reaction between the two, thereby automatically curing the cartridge. That is, when the cartridge is immersed in water, water naturally enters through the fine pores on the surface of the cartridge and mixes with the cement components.

Therefore, if the cartridge in such a state is pushed into the intended perforation and destroyed by a predetermined element, the element will be a self-hardening element made of cement components and water. It becomes surrounded by the composition and becomes firmly fixed within the hole as the reaction progresses.

However, in such conventional methods, j liquid acid 1
In order to ensure that water is supplied only by the natural penetration of water from the fine particles on the surface of the cartridge when immersed in water, it takes time for water to penetrate, and the water reaches the center of the cartridge. There was a problem that made it difficult to penetrate the system. Since water is absorbed from the entire circumference of the cartridge, a cream-like layer (wall) is formed on the two surface layers of the cement component inside the cartridge, which traps the air inside and makes it even more difficult for water to penetrate. It is. In addition, depending on the way the cement components were packed into the cartridge, there were likely to be areas where water was difficult to penetrate, making it unreliable.

Furthermore, another big problem with this conventional method is that
Since it absorbs water from the surface, it is impossible to confirm whether water has been absorbed to the center. Conventionally, this was controlled by the immersion time in water.
As mentioned above, since the water permeation time may differ depending on the cartridge, there may be an excess or deficiency of water as one of the reactants, and the automatic curing reaction may not be sufficiently controlled, resulting in an unstable element. be.

In addition, in this type of cartridge, the liquid component is enclosed in a capsule and housed in the cartridge, and when the cartridge is used, the capsule is destroyed by an appropriate means to completely mix the solid component and the liquid component. Although this method is considered complicated, it still has the same problems as described above, although it is possible to achieve rapid and uniform mixing of the solid and liquid components.

The present invention has been developed against the background of the above circumstances, and its purpose is to ensure and prompt penetration of liquid components such as water, and to enable liquid components/solid components to permeate reliably and quickly. It is an object of the present invention to provide a novel cartridge structure in which the ratio of liquid components can be controlled to be substantially constant, and furthermore, the state of penetration of liquid components can be visually observed.

In order to achieve this object, one aspect of the present invention is (a
(b) a liquid-permeable cylindrical outer container with both ends closed and filled with a predetermined solid component; , and one end penetrates the outer container and is exposed to the outside.
A cartridge is formed using a liquid-permeable cylindrical liquid-feeding member, and when the cartridge is used, the liquid is transferred from the externally exposed portion of the liquid-feeding member to the inside of the outer container through the liquid-feeding member, together with the solid component. A self-curing composition may be formed. The purpose is to forcibly inject a predetermined liquid component.

Therefore, according to the present invention, a predetermined liquid component is forcibly injected into the cartridge through the cylindrical liquid feeding member, passes through the liquid feeding member, and mixes with the solid component filled in the outer container. Therefore, injection of the liquid component only takes a few seconds, and the liquid component easily permeates the entire inside of the cartridge (outer container). Furthermore, due to the liquid permeability of the outer container, air and excess liquid components within the cartridge are discharged from the outer nuclear container to the outside, and the liquid component/solid component ratio can be easily adjusted to be approximately constant. You get it. Furthermore, since the liquid component permeates from the inside of the cartridge toward the outside, the permeation is reliable, and it is extremely easy to visually confirm whether or not the liquid has permeated, especially when the outer container is made of a transparent material. This will make it even easier to visually recognize it.

Hereinafter, in order to further facilitate understanding of the present invention, a few specific examples of the present invention will be explained in detail.

First, in FIGS. 1 and 2, reference numeral 1 is a perforated plastic tube with a large number of fine needle holes 2, and both ends of the tube are closed with clips 8.4, and the outer container 5 is closed. It consists of The outer container 5 is filled with, for example, cement mortar 6 as a solid component.

In addition, inside the outer container 5, a perforated pipe 8 made of glass or plastic, etc., having a large number of small holes 7 formed throughout it, is arranged as a liquid feeding member, located approximately at the center of the outer container 5. At the same time, one end of the pipe 8 passes through one closed end of the outer container 5 and is exposed to the outside.

Specifically, with the end of the pipe 8 protruding to the outside and exposed, the end of the external container 5 (perforated plastic tube l) is fastened to the pipe 8 with a clip 8. It is blocked and blocked. In addition, the pipe 8
The other end is closed and placed inside the nuclear envelope 5.

Prior to its use, the cartridge 10 of this construction has an open end exposed on the outside of the pipe 8 and contains a liquid component, filtrate, which reacts with the cement mortar/L/6 to form a self-hardening composition. As a result of the forcible injection, the Yamento Morta /I/
6, it is quickly and completely penetrated. By this forced injection of water, the air in the cartridge IO and further the air in the cement mortar/I/6 are pushed out through the needle hole 2 of the perforated plastic tube 1 constituting the outer container 5. In addition, the water that has been injected in excess is also discharged from the needle hole 2, so that the amount of water can be supplied in just the right amount, and therefore the water/cement ratio can be adjusted for each cartridge 10. This makes it possible to hold the value approximately constant.

In addition, since the water penetrates from the center of the cartridge 10, it is certain that the water penetrates.Also, it is possible to judge whether or not the water has leaked from the needle hole 2 of the outer container 5. In particular, the perforated plastic tube 1 of the outer container 5 should be made transparent so that the degree of penetration can be checked extremely easily with the operator's eyes. This can lead to advantages.

Then, the car (IJ Tsuji 10) in which such water was injected and a water-cement self-hardening composition was formed inside,
According to a known method, it is inserted into a predetermined hole in rock, concrete, etc., and then it is destroyed by inserting and rotating an element such as a rock bolt or anchor rod once, and the surrounding area of the element is destroyed. As the reaction of the filled self-curing composition progresses, the element becomes firmly fixed in the intended perforation.

In addition, in the cartridge 10 with a peel-off top, the cylindrical liquid feeding member is made of a rigid material such as glass or plastic. Moreover, since the fragile pipe 8 is used, it is self-supporting, and this property is a great advantage in inserting the cartridge into a deep hole. This makes it easier to destroy the outer container 5, and furthermore, the outer container 5 is easily destroyed by the fragments.

In addition, the porous plastic tube 10 needle hole 2 of the outer container 5
Also, the small hole 7 of the pipe 8 which is the liquid sending member.

Cement mortar/l/ generally filled in the nuclear container 5
The size of the opening (2, 7) is such that the solid components such as 6 cannot freely leak out, for example, the opening area is about 0.1 to 0.5. The holes (2, 71 and larger ones) are then removed or eluted when liquid components are injected, or thixotropic agents are mixed with solid components. Therefore, the air permeability through the needle hole 2 of the outer container 5, in other words, the liquid permeability, is generally smaller than the air permeability (liquid permeability) through the small hole 7 of the pipe 8. Therefore, here, the total opening area of the needle hole 2 is also set to be smaller than the total opening area of the small hole 7. In other words, by making the liquid permeability of the pipe 80 4 greater than that of the outer container 5, the filtrate (liquid component) is forcibly injected through the pipe gt into the outer container 5. This is because the particles are distributed throughout the entire body, effectively achieving uniform penetration.

Further, on the upper side, the other end of the pipe 8 located in the outer container 5 is blocked, and the cement mortar A/
However, if a certain amount of leakage is allowed, the other end can be made open, and the other end can be made to penetrate through the outer container 5 and be exposed to the outside. If the end of the hole 2fL is blocked so that it can be opened with a plug or the like, the other end may be opened or the size of the small hole 7 may be made larger than the size t, without any consideration for the leakage of the cement mortar 6. It is possible to do this.

As a liquid feeding member in place of such a rigid pipe 8, a flexible pipe 1 similar to the perforated plastic tube 1 constituting the outer container 5 is used. Using an inner tube 11 made of perforated plastic film or paper such as Japanese paper, the next side is the 8th to 6th tubes.
It is shown in the figure.

There, the inner tube 11 is submerged within the outer container 5.
It is arranged in a flattened state 29, and one end thereof protrudes from one end of the nuclear envelope 5 and is exposed to the outside.

Then, a ring-shaped elastic nubasa 12 is inserted and arranged inside the inner tube 11 near the end on the externally exposed side.
At the insertion position, the ends of the perforated plastic tubes l of the outer container 5 overlap and are not tightened by the clips 13, thereby closing the outer container 5 and flattening the elastic nupacer 12. The aim is to block the inner tube 11 by Due to this closure, there is no need to consider leakage of cement mortar/L/6 from the small hole (needle hole) 14 provided in the inner tube 11 or the other end of the inner tube 11.

When injecting water, loosen the clip 13 and flatten it.
By restoring the elastic spacer 12 to its original ring shape, the inside and outside of the inner tube 11 are communicated, and by forcibly injecting water from the externally exposed end of the inner tube 11, water can be forcibly injected from each small hole 14 of the inner tube 11. Water is allowed to permeate into the outer container 5.

In particular, when the tube 11 made of plastic or paper is used as the liquid feeding member, the perforation operation (formation of the small holes 14) is easy, and therefore the liquid permeability can be easily controlled. , by flattening it by filling it with cement mortar 6, etc., it becomes possible to ignore the leakage of the cement mortar through the small holes 14. Further, due to the presence of the elastic spacer 12, the cartridge inlet portion of the inner tube 11 is opened wide, making it easier to introduce water to be injected into the cartridge.

Further, FIG. 6 shows an example in which a pipe or rod-shaped support member 16 of a predetermined length is inserted and arranged within the inner tube 11. In the case where the inner tube 11 having no stiffness is used, the support member 16 can be inserted into the inner tube 11 to provide independence. By inserting the support member 16, the cement mortar/mortar from the small hole 14 of the inner tube 11 and its inner open end (if opened) is removed.
Leakage of I/6 will be well prevented. In these respects, it may be desirable that the support member 16 has an outer diameter that is approximately equal to or slightly smaller than the inner diameter of the inner tube 11. 2. Water can be injected into the support member 16 as it is or after it is pulled out from the inner tube 11.

Furthermore, FIG. 7 shows still another embodiment of the present invention, in which a pipe 18 made of garland, plastic, etc. and provided with a large number of small holes 17 penetrates the outer container 5. It is set up.

Therefore, both ends of the pipe 18 are exposed to the outside, but one of the ends exposed to the outside is closed, and water is injected from the other open end.

The other circumstances are almost the same as those shown in FIGS. 1 and 2, but in this example, the pipe 18 completely penetrates the outer container 5, which further improves the uprightness of the entire cartridge. They are forced to do so.

In the above example, only cement mortar was pointed out as a solid component, but in addition to such hydraulic cements, stucco, gypsum, plasters such as dolomite planuta, well-known water such as lime, anhydrite, etc. Hard materials can also be used, as well as other solids that can react with a given liquid to form a self-curing composition. Further, as for the liquid component, although water as shown above is typical, a suitable liquid component that reacts with the solid component to be used is appropriately selected depending on the solid component to be used. The solid component to be filled into the outer container 6 is generally used in powder form, and may further contain a known plasticizer, curing accelerator or curing retardant, if necessary.
solid binder.

Foaming agents, fillers, thixotropic agents, etc. may also be incorporated.

The material for the outer container 5 is most preferably the tube (1) made of perforated plastic film as described above, but other materials such as paper tubes such as Japanese paper may also be used. However, it is desirable that the nuclear envelope 5 be easily destroyed by the element, and a material that satisfies such conditions is appropriately selected. In addition, the liquid feeding member may be a pipe as described above; a tube made of perforated plastic film, a tube made of paper, or a tube made of cloth.

Furthermore, in the previous example, clips (8, 4, 18) were used to close the ends of the cylindrical outer container and liquid delivery member, and to fix the two, but instead of this, means such as welding or gluing were used. It is also possible to close it or fix it.

2. It goes without saying that various changes and modifications can be made to the present invention based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

The excellent effects of the present invention as described above are clearly demonstrated by the first experimental example.

Experimental example l Diameter x length is B2nφ x 640m and 200φ x 64oa
++D Two nylon film tubes are used, the former being an outer container with needle holes of 10 pitches vertically and horizontally, and the latter being a liquid delivery member having needle holes of 51 pitches vertically and horizontally. A cartridge according to the present invention was prepared as (inner tube). In addition, as a solid component,
Cement mortar is used.

Tap water was forcibly injected into the thus obtained fLta cartridge under various pressures from the injection port at the externally exposed end of the inner tube until water leaked from the surface of the cartridge (external container). The time was measured and the results are shown in FIG. The water/cement ratio in the cartridge after water injection was approximately 86% in all cases, which was approximately constant.

As is clear from FIG. 8, by forcibly injecting water from the inner tube (liquid feeding member), the time for water to penetrate into the cement mortar can be significantly shortened.

In addition, it was rotated and inserted and fixed in a 420φX 2.8 tB length iron pipe together with the 80IIIφX (using all six cartridges of iQQlnl length, 251φxam length PO/L/) for 24 hours. When the bolt was pulled out after the elapsed time, a pulling force of 2θ tons was required to pull it out.

Experimental Example 2 A cartridge was made using a tube made of Japanese paper both inside and outside with the same size as in Experimental Example 1, and in order to make the cartridge self-supporting, a glass with a diameter of 5flφ was placed inside the inner tube (liquid delivery member). I inserted the rod.

When water was injected into this mortar cartridge from the injection port at the externally exposed end of the inner tube,
Water pressure: Approximately 1.0 Kg/t:d, and water permeated the entire cartridge in 6 seconds.

Excess water was drained out from the surface of the outer container (outer tube). The water/cement ratio was approximately 84%.

With these 6 cartridges of 3QWllφ x 600 fin length, 25w1! φxsm length bolt 42 long φ×2.8
It was revealed that a pulling force of 19 tons was required to insert and fix the tube into a meter-long iron pipe.

The present invention has a double cylindrical structure, and the inner member of the cartridge is used as a liquid feeding member that can forcibly inject water from the portion exposed to the outside. The liquid component is allowed to permeate from inside the cartridge, which allows for rapid permeation of the liquid component, constant liquid component/solid component ratio, certainty of permeation of the liquid component, and ease of confirmation. It has great industrial significance in that it was able to achieve this.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of a cartridge according to the present invention, FIG. 2 is a cross-sectional view of FIG.
FIG. 8 is a partially cutaway front view showing another embodiment of the present invention;
Figures 4 and 5 are IV-IV in Figure 8, respectively.
and v-■ sectional view, FIG. 6, and FIG. 7 are partially cutaway front views showing still other embodiments of the invention, and
The figure is a graph showing the relationship between water pressure t' obtained in Experimental Example 1 and water penetration time. 1: Perforated plastic tube 2: Needle hole 8.4: Clip 5: Outer container 6: Cement Moffretal 7: Small hole 8: Perforated pipe 10: Cartridge 11: Inner tube 12: Elastic spacer 18: Clip
14: Small hole 16: Support member 18: Pipe applicant Tokai Rubber Industries Co., Ltd. ff14 Figure 5

Claims (1)

[Scope of Claims] (1) A fixing cartridge used for fixing a predetermined element in a hole in rock, concrete, etc. using a self-curing composition comprising a solid component and a liquid component. A liquid-permeable cylindrical outer container whose both ends are closed and whose interior is filled with the solid component. located in the solid component filled in the outer container,
and a liquid-permeable cylindrical liquid-feeding member, one end of which penetrates the outer container and is exposed to the outside. A fixing cartridge comprising: a fixing cartridge, wherein the liquid component is forcibly injected into the outer container from the externally exposed portion of the liquid feeding member through the liquid feeding member during use. (2) The car weighing device according to claim 1, wherein the liquid feeding member has greater filtration property than the outer container. (8) Both the liquid feeding member and the outer container have a large number of through holes in their cylindrical walls, and the total opening area of the former's through holes is larger than the total opening area of the latter's through holes. The cartridge according to claim 2, wherein the cartridge is also large. (4) The cartridge according to claim 1, wherein the outer container is made of a tubular body such as a perforated plastic film or Japanese paper. (5) The cartridge according to claim 1, wherein the liquid feeding member is not a rigid yet fragile pipe made of glass, plastic, etc., and a large number of small holes are bored in the wall thereof. . (6) Claim 1, wherein the liquid feeding member is a tube-shaped body such as a perforated plastic film or Japanese paper.
Cartridges listed in section. (7) The cartridge according to claim 1, wherein the other end of the liquid feeding member is located within the outer container and closed. (8) The cartridge according to claim 1, wherein one end of the liquid feeding member that penetrates the outer container and is exposed to the outside is closed until immediately before injection of the liquid component.