SU855220A1

SU855220A1 - Method of securing development working of thick coal seam low layers

Info

Publication number: SU855220A1
Application number: SU772535854A
Authority: SU
Inventors: Вячеслав Павлович Кругликов; Юрий Викторович Громов; Марк Абрамович Розенбаум; Валерий Алексеевич Андранович
Original assignee: Всесоюзный научно-исследовательский институт горной геомеханики и маркшейдерского дела
Priority date: 1977-10-21
Filing date: 1977-10-21
Publication date: 1981-08-15

Description

Изобретение относится к разработке мощных пологих пластов угла наклонными слоями, а именно к способам крепления подготовительных выработок нижних слоев.The invention relates to the development of powerful shallow formations of the angle with inclined layers, and in particular to methods of fastening preparatory workings of the lower layers.

Известен способ крепления подготови— $ тельных выработок нижних слоев мощных угольных пластов,,включающий перед погашением выработки опускание крепи из отработанного слоя в нижележащий ПЪA known method of attaching preparatory workings of the lower layers of powerful coal seams, including lowering the supports from the spent layer to the underlying P

Однако такой способ крепления является трудоемким, так как требует проведения выработок одновременно на высоту двух слоев и возведение специальной пневмобалонной крепи.However, this method of attachment is time-consuming, since it requires conducting workings simultaneously to the height of two layers and the construction of a special pneumobalon support.

Известен также другой способ крепления подготовительных выработок нижних слоев мощных угольных пластов, включающий выемку¹ врубовых щелей в поташаемой выработке и возведение в них крепи, оконтуривающей массив угля, подлежащий выемке при проведении выработки по нижележащему слою [?].There is also another method of fastening the preparatory workings of the lower layers of powerful coal seams, including the excavation of ¹ cut-in slots in the plowed mine and the erection of lining in them, contouring the coal mass, to be excavated during mining on the underlying layer [?].

Однако такой способ требует значительных- затрат на крепь и на выполнение трудоемких операций по ее возведению.However, this method requires significant costs for the support and for the implementation of labor-intensive operations for its construction.

Цель изобрегёния - снижение затрат на крепление в условиях многолетней мерзлоты.The purpose of the invention is to reduce the cost of fastening in the conditions of permafrost.

Эта цепь достигается тем, что крепь, оконтуривающую массив угля, возводят из льда, который намораживают путем заливки врубовых щелей и почвы погашаемой выработки водой.This chain is achieved by the fact that the lining, contouring the coal mass, is erected from ice, which is frozen by pouring cut-in slots and soil of redeemable water production.

На фиг. 1 изображены погашения слоевых подготовительных выработок, вид в плане; на фиг. 2 - разрез А-А на фиг. 1; на фиг. 3 - разрез Б-Б на фиг. 2;на фиг. 4 - разрез В-В на фиг. 2.In FIG. 1 shows the repayment of the lay preparatory workings, view in plan; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - section BB in FIG. 2; in FIG. 4 is a section BB of FIG. 2.

Крепление подготовительных выработок нижних слоев производят следующим о^»азом.The preparatory workings of the lower layers are fastened in the following manner.

При погашении выработок 1, пройденных в условиях многолетней мерзлоты по верхнему слою 2 мощного пласта и закрепленных анкерной крепью 3, производят выемку врубовых щелей 4 в ни же л ежа ’«s щем слое 5.When repaying mine workings 1, passed under permafrost conditions along the upper layer 2 of a thick layer and secured with anchor support 3, excavation of cut holes 4 is made in the same layer 5.

Выемку щелей 4 производят со стороны вьработаннсго пространства на сопряжении очистного забоя по мере его подвигания.; Работы по возведению крепи для выработки нижележащего слоя 5 выполняют под защитой крепи сопряжения 6, примыкающей к крепи 7 очистного забоя. По мере выемки врубовых щелей 4 их заливают водой из трубопровода 8. Одновременно заливают водой почву выработки 1 за ограждение 9 типа резиновой перед, вижной опалубки, предотвращающей ее растекание за пределы погашаемой части выработки 1. Ограждение 9 перемещается вместе с крепью сопряжения 6. Для предохранения трубопровода 8 от образующихся пород 10 на крепи сопряжения 6 устанавливают навесное ограждение 11. Залитая в щели 4 й на Почву выработки 1 вода замерзает под воздействием отрицательной температуры окружающей среды и образует ледяную оболочку крепи 12, оковтуривающую массив угля 13, который под лежит выемке при проведении выработки по нижележащему слою 5.The excavation of slots 4 is carried out from the side of the worked space at the interface of the working face as it moves .; Work on the construction of the lining for the development of the underlying layer 5 is performed under the protection of the lining of the interface 6 adjacent to the lining 7 of the working face. As the cut-out slots 4 are removed, they are poured with water from the pipeline 8. At the same time, the soil of mine 1 is poured with water for the type 9 rubber fence in front of the movable formwork, which prevents it from spreading beyond the repayable part of the mine 1. The guard 9 is moved together with the coupling support 6. For protection of the pipe 8 from the formed rocks 10, a hinged fence 11 is installed on the lining of the mating 6 11. The water poured in the slot 4 on the Production Ground 1 freezes under the influence of negative ambient temperature and forms an ice support bolt 12, enveloping an array of coal 13, which lies beneath the recess when conducting development along the underlying layer 5.

Claims

(54) METHOD FOR FIXING PREPARATORY EXPLOSIONS OF LOWER LAYERS OF POWERFUL COAL STRUCTURES The invention fires to the development of thicker flat seams of angle with inclined layers, namely to methods of fastening preparatory bottom layers. There is a known method of fastening preparatory workings of the lower layers of thick coal seams, including before. by extinguishing the lowering of the support from the spent layer to the underlying .i. However, this method of fastening is laborious, since it requires carrying out windings simultaneously to the height of two layers and erecting a special support strap. Another method is also known for attaching preparatory workings of the lower layers of thick coal seams, including dredging-cutting gaps into the working layer and erecting an array in it, delineating the mass of coal that is to be dredged when carrying out the working on the underlying layer 2j OpfiaKO. lining and to perform labor-intensive operations for its construction. The purpose of the invention is to reduce the cost of fixing in permafrost conditions. This chain is achieved by the fact that the lining, which contouring the coal mass, is erected from the ice, which is frozen by pouring the cutting gaps and the soil with water to be recharged. FIG. 1 shows the repayment of the so-called preparatory works, plan view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2; FIG. 4 - B-B in FIG. 2. The fixing of the preparatory bottom layers is carried out as follows. redemption of overfilling permafrost conditions in the permafrost conditions in the upper layer 2 of the thick reservoir and anchored by anchoring 3, produced 3fi5 cutting of the cuttings of slots 4 in the lower section: shem layer 5. Taking the notches of the 4 holes from the side of the covering. cleansing as far as his podviganv .; The works on the erection of the lining for the implementation of the underlying layer 5 are performed under the support lining of the joint 6 adjacent to the lining 7 of the clearing slab. As the vrubovos 4 are dredged, they are poured with water from the pipeline 8. At the same time, the soil of the factory 1 is poured with water over the fence 9 of the reache type in front of the sliding formwork to prevent it from spreading out of the drivable part of the mine 1. The fence 9 moves with the support (fi In order to protect pipeline 8 from the outlying rocks of U, crepe mating 6 installs a guard 11. 11. It is flooded in the slit 4 and at the 11th generation 1 water freezes under the influence of negative ambient temperature bolp lining 12, the contouring massif of coal 13, which under the jO lies in the groove of the underlying layer 5. Formula of the invention to be excavated during the production of noi to the underlying layer, characterized in that, in order to reduce the cost of fixing in permafrost conditions, lining, contour-; The coal mass is erected from the ice, which is frozen by pouring cut holes and redeemable soil with water. Sources of information taken into account in the examination 1. Avtskoe. USSR certificate number 649855, cl. E 211) 11/14, 1976.

2. USSR author's certificate №.659752, cl. E 21 D 13/02, 1977 (prototype).

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