JPS59158900A - Grouting material for fixing lock bolt - 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 invention for fixing the mouthpiece to the stratum.
7.1 Cock bolts or roof bolts are used in mining operations, etc. to maintain strata in a consistent state and to support such strata. has been done. Such a 1-coupolto is usually located within the earth's 11th layer line,
- Person drilled at an angle of U: Inside the hole 4. - Fixed.

Some rock bolts are equipped with a locking device at the tip that can be expanded mechanically within the borehole in order to hold the bolt securely within the borehole. )
.

In some cases, IJ+ to maintain 1.1
A breakable panoge with a pawn is also placed inside the hole. -C has been used (U.S. License No. 4.1.26,
003, 4.1.26,005 and 4.1
．． No. 27,001). Break the buff cage containing cementitious material with a rock bolt, t:y 1. Shake the Kuholt to mix each component of the cementum. After that, seven
Place the bolt with C1 as it is in the hole that holds the hole.

-T Niyo-174 It has been used by storing it in a breakable container according to the J method (US 1'1jt
l'fsj permit No. 3.61. i (, No. 326, No. 3.
No. 302,410, same No. 4.211. ．． No. 681 and No. 4,136,774-bi). This type of hardenability (A) is generally different from Grouting materials in the technical field of Rockhol.As this type of 4411'4,
)two! The rate of gelation and hardening of the fluid that secures the tuber within its borehole, the ease of mixing within the borehole, and the storage method or permissible amount of water (due to the presence of an organic A polymeric resin is preferred.The grouting composition usually contains two types of reaction agents (1), and both agents (1) and (1) are separated by a rupturable partition wall (1).
5 people - accommodated in one common banageshi with two compartments. Organic car body resin publication material IJ: Mumurami cement material book 31: Much higher than I (song. Therefore, Y
The resin materials are usually mixed with sand, silica, and other active finely powdered materials. It is subject to shrinkage due to the 1F point during its use.

The use of foamable resin compositions has been proposed to overcome this inherent shrinkage disadvantage. Parable (J,
U.S. Special No. d'I No. 4, 136,774, Neell
It has been proposed to use ammonium carbonate and helium bicarbonate to generate 1H'LC carbon scum and foam the fat+A material.

The low boiling point>+ν substance was also tested as ti-1 and was 7C, but was denied as 4. The combination of unsaturated polyester resin and polyhydric alcohol or polyhydric alcohol or foaming agent (for forming a Δ4 fat composition) is described in the above-mentioned U.S. patent. The same U.S. Pat.
Considerable foaming of Crouchink abrasive material is required due to curing-C
One thing is well known.

What is needed for Roofpol River Crouchink H is the foaming of the composition during curing, an adequate shelf life, a relatively low price, and the ability to fix the composition (Lonochol) as a solid anchor. The structural properties after foaming are sufficient to maintain the foam at 1°, and the convenience in use.

According to the present invention, the above-mentioned various requirements are not met, and if >
, lI+, 3・Lili 1 conversion・+9, Noshi 1Tsu port fixation crouch ``ink'' (, Ino) ・Provided L'shii). This grouting material has the following ingredients: 11'# 1y, inorganic carbonate or bicarbonate;
droxide) (usually supplied in the form of an aqueous solution); then C) a suitable catalyst to initiate the curing of the unsaturated polyester (Δ1 resin); Optionally, a small amount of aluminum chloride may also be added to the grouting material for foam-like properties.

A preferred composition that can be used as grouting 4A of the present invention is described in JP-A-57-63319.

It has been found that a grouting material consisting of a combination of components listed above is very suitable for use in the crouting of rock bolts. ” - When mixed, each component will be 1,
Under suitable conditions, it cures rapidly and expands by about 1-2 cm in volume. The actual degree of expansion can be adjusted by changing the ratio of each component.

The present invention further provides a Rockpold hard foil grouting cage housed in a package. In the grouting material, unsaturated poly: l Nisler + J411 effect:>
mll dag and 1 powdered inorganic carbonate or t i1i
The carbonate is separated from the finely powdered hyp' L:l aluminum oxychloride, λ1 by breakable septa.
1 and housed in the PC. When using, Y
] When Nokhor 1~ breaks through the package, the IVA wall inside the Pasokane is also broken, and then, with Rockport's influence, the components are tightly sealed.

Hereinafter, 1, the present invention will be further described in relation to Examples 6 and 11.
Detailed explanation] In this specification, [-%l means 1% by weight unless otherwise specified.

Inukai-1 has two isolated compartments. The following composition was applied to Nokhor I.

To K1 (drug A) 1 ml of unsaturated polyester (fatty syrup 2038.g
(Freeman 5typo1 41 fat 4O-4(+
12) Powdered calcium carbonate 3338
g Polymerization accelerator (phenylethyl ethyl 9E-nolamine) All ingredients to the drug are mixed intimately and placed in one compartment of the resin tank cage.

1 to ±13-(drug 13) h):' l:l aluminum oxychloride 3
340 g (50% water 1 volume) Aluminum chloride (32°B) 25
0 g interface/+11 sex agent
12g1fI11: Medium (Hendyl peroxide, 35% base l-) 600g Drug H Drug ingredients are mixed intimately and placed in the other isolated saw compartment of the resin package.

This resin package is sealed. The composition of item -1-4 has a shelf life of more than 6 months as long as the catalyst and hydro, oxo aluminum chloride are kept separate from the unsaturated polyester resin syrup.

The panogage was filled with 1 part of drug B and 3 parts of drug Δ.

Upon mixing 13 into the drug, the volume of the mixture begins to increase. Kelization time was about 1.5 minutes at 70°C (21°C), and the exothermic peak was at about 160°C (71°C). The volume of the cured mixture was approximately 1.5 times that of the initial composition. The cured mixture has high hardness and strength, with a density of approximately 60 to 65 Bons F'/cubic foot (960 to +-
040k F,.

/ Wei). Another advantage of this composition is that it cures even in the presence of water.

The operation when using the grouting method in the form of a resin package according to the present invention will be described with reference to the accompanying drawings. 10 is a hole drilled through several layers 11, 12, 13 of -ζ. As shown in FIG. 1, the resin package 14 is inserted into the tip of the perforation 10. Thereafter, as shown in FIG. 2, when Rockpol I-15 is inserted into the perforation 10, it pierces the pan cage 14 and the resin component 1.
6 is released and can be mixed. The match can be achieved by quickly turning or shaking the I-Koppol I-15. Once mixing has taken place, Rockpol 1-15 is held in place until resin component 16 hardens and foams. As shown in FIG.
The -C foams and hardens in the cracks and fissures 17. To install Rockpol 1-15, Rockpol I/Plate 1
8 and screw-in Nano 1-19 to Rockpol I/15 to complete.

An example of the form of the resin package is shown in FIG.

In the figure, 20 is a gauging similar to a sausage casing, which has 2 (prisoner compartments 21, 22).

Both ends of the gauging 20 are fitted with sausage casing knots (
Alternatively, it can be fastened with a tie) 23.

As shown in FIG.
- It is assumed that it is contained inside the lock 24, and the other compartment 22 is an annular 1-me chamber formed by the gating 20.24. In another example shown in Figure 6,
The outer casing 20 has a barrier film 25, which separates the two compartments 21,22.

The length of the borehole 10 is typically 4 to 16 feet (1,2 to 4 mm).
9 m). The package 14 has a perforation 10 in diameter.
Smaller, one bait takes one minute to provide the amount of resin needed to fix the holt. 1lilil perforation 1
Two or more resin packages may be inserted into 0.

If there are fissures, micropores, cracks, etc. in the stratum to be treated,
By increasing the amount of the resin composition, the cured material will form these vortices,
It can penetrate into micropores, cracks, etc. and prevent foaming.

This resin syrup is usually made from polymerizable unsaturated polyester resin. This is a solution prepared by dissolving a copolymerizable monomer such as (N'). Unsaturated polyester resins 1 are usually reaction products of polycarboxylic acids or acid anhydrides and polyols. At least a portion of the polycarboxylic acid contains ethylenically unsaturated bonds that enable crosslinking of the resulting unsaturated polyester resin.

Commonly used such acids and anhydrides include maleic acid, maleic anhydride, fumaric acid, phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, and the like. The polyol component may be hydroxy-terminated esters of glycols such as ethylene glycol, propylene glycol, butylene glycol, polyethylene glycol, polypropylene glycol, or diesters of dicarboxylic acids with algylene glycols or polyalkylene glycol esters.

Other unsaturated polyesters can be formed by combining ethylenically unsaturated monocarphonic acids such as acrylic acid or methacrylic acid with polyol compounds such as bisphenols. Another unsaturated polyester resin can be produced by reacting diglycidyl ether of bisphenol with an ethylenically unsaturated carboxylic acid such as acrylic acid or methacrylic acid (4).

This type of composition can be characterized as an unsaturated polyester resin because it contains 2 or more ester bonds and has ethylenically unsaturated bonds.

Carry for unsaturated polyester resin? − becomes J
'<m Polymers usually include styrene, vinyl luene, divinyl chloride, acrylic ester,
It is a tyrenic unsaturated compound such as methacrylic acid, acrylic acid, and methacrylic acid. Generally, the copolymerizable monomer will account for about 25-50% by weight of the unsaturated polyester resin and the remaining 75-53% by weight of the unsaturated polyester component or syrup). , :/″
D.7 may also contain a small amount of a polymerization inhibitor such as hydroquinone. This composition is 1:l
: May contain a naxo-rope agent such as silica airgel. Suitable unsaturated polyester resins are available from a number of resin manufacturers.

The grouting of the present invention also includes inorganic carbonates or heavy acid salts, preferably carbonic acid luciuno 1, bicarbonate calcila () 8, magnesium carbonate, Contains lucal earth metal carbonates or orthocarbonates such as magnesium bicarbonate. Other inorganic carbonates or graviacids that may be used include:
Carbonates and weight # of lead, Ni-gel, zinc, aluminum, potassium, sodium, salts, and dolomy I.
, natural carbonates such as limestone and marble. These materials are relatively inexpensive and easily available. During the reaction in the part where grouting +3 of the present invention is used, the inorganic carbonate or d [carbonate] is converted into carbon dioxide gas when it comes into contact with the acidic aluminum oxychloride contained in the agent (3). Ru. For dispersion into the drug and the desired rapid generation of carbon oxide gas, the carbonate or bicarbonate should not be in the form of finely divided particles.

5E-1 To ensure rapid and complete polymerization of the components after mixing within the 5E-tracing borehole, it is preferred to include a polymerization accelerator in the drug mixture. In general, as a polymerization accelerator for unsaturated polyesters (1), any known IW, J, etc. can be used. The amount of polymerization accelerator used is from about 0.2 to
It is 1.0% of the vehicle volume. The promoter must be compatible with the catalyst selected for the system of the invention.

[Mae 13-Qλ'' ≦ agent - 1 sea A knee 1 ≦ salt 13-Qλ'' 11-1 Aluminum oxychloride is a substance represented by the general formula below. Yes: AP) 2 (OH) x C+! ,,-x(j-
(Medium, X is 1 to 5). The value of X is small (e.g. x-・
In the case of 1 to 2), the 7.37 treated carautink material may be somewhat difficult to handle, but it can still be used. x(2
) grouting containing hydroxyaluminum chloride with a low value (force of A or grouting containing one with a high value of However, in order to obtain uniform foaming, it is usually desirable that X be between 3 and 5r.

10 oxidized aluminum is Juntsu, approximately 50% Ichikawa
It has been reprinted in the form of an aqueous solution containing approximately 50:69 of aluminum hydroxychloride and approximately 50:69 of water.

In order to achieve the necessary rapid mixing within the limited space available within the borehole, a substantial amount of surfactant is included in the grouting material. It is preferable to let The surfactant may be a polyalkylene conickel or silicone surfactant. The amount of surfactant is within the range of about 0.05-1.0% for the sum of all components of Drugs A and I3 @ 1lflLl-JA.

The catalyst for the unsaturated polyester resin syrup should be present in drug #3. The catalyst is heated at normal temperatures, especially at 1
At the temperature expected within the borehole of Konokpo Tsukikawa, it should be said that it will occur at the same temperature as that of eight instincts. In order to ensure the reaction of Approximately 1.5 to 15% by weight.If the catalyst is used for this purpose, it should be 30 to 40% to ensure good water dispersibility.
It is desirable to use it in a paste state.

7 Public J[]]J Drug A or Drug I3 or both: h is an additive other than the listed component, such as aluminum hydroxide J.
It may be augmented with inert fillers such as pulverulent silica, glass, sand, fly ash, etc. The amount is preferably (7)
Approximately 10 to 50% by weight of the entire grouting material is aged chloride.
A. Preferred embodiments of the grouting material of the present invention
The mixture of drug B contains a small amount of aluminum chloride. Aluminum chloride appears to improve the foaming properties of some unsaturated polyester resin compositions. Aluminum chloride is commercially available as an aqueous solution and is readily available in a variety of concentrations from a variety of suppliers. Density 32
°B aqueous solutions are useful.

Ingredient 9 Growth One of the factors to consider when determining the proportions of each component in the composition of the present invention is the price of each component. Another factor is the rate of reaction. Yet another factor is the properties of the resulting cured grouting material. Generally the following ratios are useful.

Preferably, the unsaturated polyester resin syrup comprises about 12-50% by weight of the total grouting material, more preferably about 20-40%. Preferably, the aluminum chloride and aluminum chloride account for about 2 to 15% by weight of the total grating material. Preferably, the inorganic carbonate or bicarbonate constitutes about 10-50% by weight of the total grouting material.

夾用聯jλ− The compositions of drugs A and B used are as follows.

Drug A Unsaturated polyester resin syrup 2038 g Calcium carbonate 3338 g Polymerization accelerator
9g Drug B Hydrookidi aluminum chloride 400g (50
% aqueous solution) Surfactant 8g Hendyl peroxide (35% paste) 300g Drug B A resin package for perforation containing 4 parts by weight of the drug per part of the drug type was prepared. This package has a kelization time of 1 minute and 45 seconds after mixing the ingredients. The observed volumetric expansion ratio is between 1 and 1.2.

Drug A Example-3-Example-4
-Unsaturated polyester resin (Yubica 87.31T) 1000 g
1000g calcium carbonate 500
g 1000 g, Jj mark 113
Length j color inheritance J-real-absolutely 1 hill l
:J oxychloride aluminum shim (50% water/volume) 10
00 E÷ 〇00 Polycone foaming agent 20 g 20 g Water t'tJj Aluminum chloride 1000 g 1000 g Chloride-aluminum; Lamb HlOg (
50'% aqueous solution) Hensoil peroxide 140 g140 g (
35% base) In the formulation of Example 3, 1 part by weight of drug B was added to 2 parts by weight.
A resin pancage for perforation containing the following parts by weight is manufactured.

・Mix the ingredients of the second package at an environmental temperature of 30°CQ,
As a result, foaming and hardening occurred in 1.5 minutes, and the volume expansion ratio at this time was 2.3 times.

On the other hand, a resin package for perforation containing 1 part by weight of drug B and 2 parts by weight of drug was prepared using the formulation of Example 4, and the components of this package were mixed in an environmentally heated environment at 5°C. . The package was foamed and hardened 10 minutes after mixing, and the volumetric foaming ratio at this time was 2.0 times.

Even in this situation, the Rockpole 1- is firmly fixed.

[Brief explanation of drawings]

Figures 1 to 3 are shi! 7. Resin bag for Kuhol I. A cross-sectional view of a stratum with gauged holes; FIG. 4 is a perspective view of the most advanced resin filter of the present invention;
Also, FIGS. 5 and 6 show representative resin bathonores of the present invention.
FIG. 10...Drilling 1112.13...Ground 1A
14...Resin package 15...Rock bolt, 16...Resin mixture 18.
... Rockpol I plate 19 ... Neso-filled Nano I 20 ... Casing 2], 22 ... Chamber 23 ... Fastening section 24 ... Inside / Casing 25 ... Barrier film application People Nippon Yubika Co., Ltd.

Claims (1)

[Scope of Claims] (1) The following components: (1) Unsaturated polyvarnish-'rol) δ1 fatty acid,
(2) Toru 49) Fui! ,4 tjL! + real salt map,
- bicarbonate, (3) an aqueous solution of powdered aluminum chloride, and (4) a medium for initiating the curing of the unsaturated polyester resin. The combination of U' and 1-rugoto is characterized by the combination of U' and 1-rugoto. (2) The following composition 53 is included in the box: (1) Unsaturated polyester resin I:] , , (2)
) Finely powdered inorganic carbonate or bicarbonate, (4) Start curing of the unsaturated polyethylene resin (27), (4) Start curing of the unsaturated polyester resin. A second catalyst, comprising the set a-C, wherein said components (1) and (2) are separated by said components (3) and (4) by a breakable gap 4V.
4'A for fixing a rock bolt, characterized in that it is housed in a storage unit separated from the storage unit (4'A). (3) Groutink+A5 according to claim 1 further containing aluminum chloride