SU768982A1

SU768982A1 - Method of working thick coal seams

Info

Publication number: SU768982A1
Application number: SU782694438A
Authority: SU
Inventors: Юрий Гаврилович Пахтусов; Сергей Григорьевич Фомичев
Priority date: 1978-12-07
Filing date: 1978-12-07
Publication date: 1980-10-07

Description

мониторами 10 или агрегатами. Выемку угл могут производить одновременно в нескольких столбах с опережением выемки столбов у выработанного пространства 12. Одновременно с началом выемки каждого столба могут производить выемку надштрекового целика 13. Выемку в столбе начинают с отбойки нижнего сло 14. Верхний слой 15 не отбивают, и он остаетс в виде нависающей консоли 16, котора может обрушатьс под действием давлени горных пород выработанного пространства 12 на гибкое перекрытие. При необходимости консоль может быть подсечена щелью 17. Обрушивщийс уголь 18 верхнего сло в дальнейщем разрушаетс гидромонитором 10 и в виде пульпы транспортируетс на аккумулирующий щтрек. После выемки угл в обоих сло х гидромонитор переставл ют и цикл операций повтор ют. Отработку столбов 9 производ т с оставлением охранных целиков 19. По мере отработки столбов надщтрековые целики 19 вынимают гидромонитором 20 из аккумулирующего и параллельного штреков.monitors 10 or aggregates. The coal can be removed simultaneously in several pillars with advance of the excavation of the pillars at the open space 12. Simultaneously with the beginning of the excavation, each pillar can be removed at the top of the rear pillar 13. in the form of an overhanging cantilever 16, which may collapse under the effect of the pressure of the rocks of the open space 12 on the flexible overlap. If necessary, the console can be undercut by slit 17. The overburden of coal 18 of the upper layer is further destroyed by the jetting machine 10 and, in the form of pulp, is transported to the accumulating tongue. After the coal has been removed in both layers, the hydromonitor is repositioned and the cycle of operations is repeated. The testing of the pillars 9 is carried out leaving the guard pillars 19. As the pillars are worked out, the super-pillar pillars 19 are removed by the jetting machine 20 from the accumulating and parallel drifts.

Данный способ позволит повысить эффективность и безопасность ведени очистных работ.This method will improve the efficiency and safety of cleaning operations.

Claims

1. The way to develop powerful coal seams, including the drift

and excavation workings at the Soil of the Reservoir, working out of the installation layer at the roof of the reservoir with laying of flexible overlap and excavation of coal under flexible overlap with pillars by falling from the excavation workings, in order to increase the efficiency and safety of cleaning work, each column of coal is worked in two layers

in this case, first of all, the lower layer is tested, and after the collapse under pressure of the roof rocks of the hanging console of the upper layer, the latter is dredged, and the columns are inclined

towards the pristine massif ang.

2. A method according to claim 1, characterized in that during the development of the lower layer, the hanging console of the upper layer is cut off from the column mass of the column.

3. The method according to claim 1, characterized in that, in order to reduce coal losses in the presence of podshtrekovyh pillars, the coal from the latter is extracted after the advancement of the cleaning works.

Information sources,

taken into account in the examination

1. USSR Author's Certificate No. 538135, cl. E 21S 41/04, 1973.

2.Ohrimenko V.A. and others. Underground coal mining, M., Nedra, 1974, p. 80-

81.

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