SU934040A1

SU934040A1 - Plugging composition

Info

Publication number: SU934040A1
Application number: SU792823102A
Authority: SU
Inventors: Людвиг Павлович Томашевский; Виктор Михайлович Болдин; Петр Алексеевич Боровиков; Нонна Павловна Кривощекова; Галина Григорьевна Федорова; Леня Рувимовна Вин; Нина Николаевна Прудникова; Ирина Федоровна Кошелева; Лариса Дмитриевна Прохоревич
Original assignee: Всесоюзный научно-исследовательский и проектно-конструкторский угольный институт "КузНИУИ"
Priority date: 1979-09-18
Filing date: 1979-09-18
Publication date: 1982-06-07

Description

(54) ТАМПОНАЖНЫЙ РАСТВОР(54) MIXING SOLUTION

1one

Изобретение относитс к горнодобывающей промышленности и может быть использовано при упрочнении треш,иноватого горного массива дл повышени его устойчивости .The invention relates to the mining industry and can be used in the hardening of a trash, a fresh rock mass to increase its stability.

Известен тампонажный раствор, включаюший св зуюш.ее, отвердитель и воду 1.Known cement slurry, including bonding, hardener and water 1.

Недостатком его вл етс низка жизнеспособность , 1 -15 мин, не позвол юща обеспечить нагнетание в скважину.The disadvantage of it is low viability, 1-15 minutes, which does not allow for injection into the well.

Наиболее близким к изобретению по технической сущности и достигаемому результату вл етс тампонажный раствор дл упрочнени трещиноватого горного массива, включающий св зующее, кислотный отвердитель и воду.2.The closest to the invention in its technical essence and the achieved result is a cement slurry for strengthening a fractured rock mass, including a binder, an acid hardener and water.

Недостатком этого состава вл етс то, что из-за высокой текучести состава происходит медленное отвердевание смеси, что отрицательно вли ет на процесс упрочнени массива.The disadvantage of this composition is that, due to the high fluidity of the composition, the mixture slowly slows down, which negatively affects the process of hardening the massif.

Цель изобретени - повышение скорости холодного отверждени раствора.The purpose of the invention is to increase the rate of cold curing of the solution.

Поставленна цель достигаетс тем, что в качестве св зующего используют фенолформальдегидную смолу, модифицированную диэтиленгликолем, при следующем соотношении компонентов, вес. ч.: Фенолформ альдегидна смола, модифицированна диэтиленгликолем100This goal is achieved by using phenol-formaldehyde resin modified with diethylene glycol as a binder in the following ratio of components, wt. b .: Phenolform aldehyde resin, modified with diethylene glycol 100

Кислотный отвердитель 8-16 Вода2-4Acid hardener 8-16 Water2-4

Фенолформальдегидна смола, модифицированна диэтиленгликолем, представл ет собой 80%-ный водный раствор продукта Phenol-formaldehyde resin, modified with diethylene glycol, is an 80% aqueous solution of the product.

10 конденсации фенола и формальдегида в присутствии гидроокиси натри в качестве катализатора и диэтиленгликол в качестве химически модифицирующего агента.10 condensation of phenol and formaldehyde in the presence of sodium hydroxide as a catalyst and diethylene glycol as a chemically modifying agent.

Именно химическа модификаци , осуществл ема в процессе поликонденсации фенолформальдегидной смолы, способствует получению св зывающего. В известном тампонажном растворе диэтиленгликоль, вводимый в период приготовлени (омпозиции , не может взаимодействовать с фенол20 формальдегидиой смолой, так как в данном случае отсутствуют услови , необходимые дл химической модификации.It is chemical modification, carried out in the process of polycondensation of phenol-formaldehyde resin, helps to obtain a binding agent. In the known cement slurry, diethylene glycol, introduced during the preparation period (the compositions cannot interact with phenol20 with formaldehyde resin, since in this case there are no conditions necessary for chemical modification.

Claims

Chemical modification of phenol-formaldehyde resin with diethylene glycol helps to increase the adhesion of the cement slurry to coal and rock, and also reduces the curing time. As an acid hardener, aromatic sulfonic acids, their salts, anhydrides and chlorides (benzenesulfonic acid, l-toluenesulfonic acid, / g-chlorobenzenesulfonic acid, etc.) or mixtures of various acids, for example benzene sulfonic acid and phosphoric acid, can be used. Consumption of hardener within the range of 8-16 ° / o in combination with other signs allows to obtain cement grouting solutions with a wide range of flow loss time, an important indicator for its application in various geological and mining engineering conditions. This time should be longer than the time required to inject the solution into the array and flush the equipment, which, in turn, depends on the amount of solution being prepared, the performance of the injection unit, the trash, the newness of the array, etc. The slurry is prepared as follows. The components, measured according to the recipe, are mixed in a mixer equipped with an electric motorized stirrer for 10-15 minutes until a homogeneous mass is obtained. Cement slurry has a wide range of flow loss times. Experience has shown that a time of 2.5-3 hours is optimal. However, if necessary, the cement slurry can shorten the yield loss time to shorten the full cure time, which will shorten the time from hardening to operation of the coal seam. The well-known cement slurry cannot provide a flow loss time of 2.5-3 hours, since this will unacceptably increase the time for complete curing. Laboratory tests of an experimental batch of phenol-formaldehyde resin modified with diethylene glycol showed that cement slurry solutions based on it meet the requirements of 9 0 cement slurry solutions for strengthening the rock mass with respect to water solubility, viscosity, water resistance of hardened samples, with a wide range of time control loss. yield and high strength properties. The proposed cement slurry for hardening fractured rocks and coal improves the strength and stability of the rock mass and prevents the formation of dumps and collapses, avoids unproductive labor and materials to fix the domes, increase the safety of mining, increase the pace of cleaning and preparatory faces, reduce coal loss. in the depths. Based on positive laboratory tests of a new cement slurry at KNIIKHP, a batch of phenol-formaldehyde resin, modified with diethylene glycol, is being prepared for pilot testing of it in underground conditions at the Koksovoy Prokopyevskugugol mine. Claims Cement slurry for strengthening a fractured rock mass, including a binder, an acid hardener and water, characterized in that, in order to increase the rate of complete curing of the solution, phenol-formaldehyde resin modified with diethylene glycol is used as a binder, with the following ratio of components, weight. h .: Phenol formaldehyde resin modified with diethylene glycol -100 Acid hardener 8-16 Water2-4 Sources of information taken into account during the examination 1. USSR Author's Certificate No. 368406, cl. E 21 D 21/00, 1970.

2. USSR author's certificate No. 591581, cl. E 21 V 33/138, 1974.