SU1177484A1

SU1177484A1 - Method of controlling solid roof prior to primary settling in mining sloping coal beds

Info

Publication number: SU1177484A1
Application number: SU833709417A
Authority: SU
Inventors: Григорий Васильевич Овчаренко; Иван Николаевич Богураев; Петр Михайлович Бигма; Анатолий Иванович Серебрянский; Алексей Иванович Сухинин
Priority date: 1983-11-25
Filing date: 1983-11-25
Publication date: 1985-09-07

Abstract

СПОСОБ УПРАВЛЕНИЯ ТРУДНООБРУШАЕМОЙ КРОВЛЕЙ ДО ПЕРВИЧНОЙ ПОСАДКИ ПРИ РАЗРАБОТКЕ ПОЛОГИХ И НАКЛОННЫХ УГОЛЬНЫХ ПЛАСТОВ, включающий отработку длинными столбами по восстанию и выемку столбов длинными очистными забо ми, бурение из подготовительных выработок скважин в почву пласта длиной, равной 2/3 шага посадки основной кровли, с рассто нием между скважинами не более 2/3 шага посадки основной кровли, подвигание границы призабойного npocTpafjCTBa от забо скважины до обнаженной поверхности почвы пласта, зар жение и взрывание зар дов ВВ в скважинах с образованием опорного вала в выработанном пространстве, отличающийс тем, что, с целью повышени эффективности управлени кровлей в лавах путем увеличени плотности опорного вала и безопасности работ, дополнительно бур т скважины в кровлю пласта, причем и в почву и в кровлю пласта скважины бур т в плоскости, перпендикул рной плоскости напластовани , причем скважины в кровлю пласта бур т под углом ос к плоскости напластовани , определ емым из выражени с S3 4-„о( йЬн 2Lo6-p сл где Ь -мощность непосредственной кровли , м; Lo6t-первичный шаг обрушени пород основной кровли, м, а взрывание зар дов ВВ провод т сначала в почве, а затем - в кровле пласта. 00 4THE METHOD OF MANAGING THE LABOR-CIRCULATED ROOFURES TO THE PRIMARY LANDING WHEN DEVELOPING THE SHEET AND TILTING COALS, including working out the long pillars on the uprising and dredging the pillars with long clearing holes, drilling from the development workings of the well to the uprising and digging the pillars with long clearing holes, drilling from the development workings of the well to the rebellion and dredging the pillars with long clearing holes, drilling from the development workings of the well to the uprising and digging the pillars with long clearing holes, drilling from the workings of the well to the uprising and digging the pillars with long cleaning holes, drilling out of the development workings of the wells into the reservoir, between the wells, no more than 2/3 of the landing step of the main roof, pushing the bottomhole boundary npocTpafjCTBa from the bottom of the well to the exposed surface of the soil of the reservoir, charging and blasting explosives in a well with the formation of a support shaft in the open space, characterized in that, in order to increase the efficiency of roof management in lavas by increasing the density of the support shaft and safety of work, the wells are additionally drilled in the roof of the formation, and in the plane perpendicular to the bedding plane, the wells in the roof of the reservoir are drilled at an angle to the plane of the bedding, determined from the expression S3 4-о ((L = 2Lo6-p) where L is the power of the immediate roof, m; Lo6t is the primary step of collapsing the rocks of the main roof, m, and the explosive charges of explosives are carried out first in the soil and then in the roof of the seam. 00 4

Description

Изобретение относитс к горной промышленности и предназначено дл управлени кровлей при разработке пологих и наклонных угольных пластов.The invention relates to the mining industry and is intended to control the roof when developing flat and inclined coal seams.

Цель изобретени - повышение эффективности управлени кровлей в лавах путем увеличени плотности опорного вала и безопасности работ.The purpose of the invention is to increase the efficiency of roof control in pits by increasing the density of the support shaft and the safety of work.

Способ осуш,ествл етс следующим образом .The method of drying is as follows.

Вслед за подвиганием лавы из штрека в почве и кровле пласта бур т скважины перпендикул рно линии очистного забо длиной , равной 2/3 шага первичной посадки основной кровли без учета ширины целика,Following the movement of the lava from the drift in the soil and the roof of the reservoir, the wells are drilled perpendicular to the clearing line of a length equal to 2/3 of the primary landing step of the main roof without considering the width of the rear sight,

оставл емого у штрека. Рассто ние между скважинами по длине лавы должно составл ть не более 2/3 шага первичной посадки основной кровли, чтобы исключить возможность разлома основной кровли между возводимыми опорными валами. Скважины в почве пласта бур т в плоскости напластовани , а в кровле пласта - под углом оС к плоскости напластовани до контакта пород непосредственной и основной кровель. Угол определ ют из выражени left at the drift. The distance between the wells along the length of the lava should be no more than 2/3 of the primary landing step of the main roof in order to exclude the possibility of the main roof breaking between the erected support shafts. The wells in the soil of the reservoir are drilled in the bedding plane, and in the roof of the reservoir - at an angle of ° C to the bedding plane before contact of the rocks of the direct and main roofs. The angle is determined from the expression

tgat. , 2.Lo6ptgat. , 2.Lo6p

а взрывание зар дов производ т сначала в почве, а затем в кровле пласта.and the blasting of charges occurs first in the soil and then in the top of the formation.

Claims

METHOD FOR MANAGEMENT OF DIFFICULT ROOFING TO PRIMARY LANDING AT THE DEVELOPMENT OF SLEEP AND TILT COAL LAYERS, including working out with long pillars for rebellion and excavating columns with long treatment faces, drilling from the preparatory workings of wells into the soil with 2 main steps / into the soil with the main layer / 2 boreholes no more than 2/3 of the step of landing the main roof, moving the bottomhole boundary from the bottom of the borehole to the exposed surface of the formation soil, charging and blasting explosive charges in the borehole different with the formation of a support shaft in the worked out space, characterized in that, in order to increase the efficiency of roof management in lavas by increasing the density of the support shaft and the safety of work, additional wells are drilled into the roof of the formation, and in the soil and into the roof of the formation, wells are drilled in the plane perpendicular to the bedding plane, and the wells are drilled into the formation roof at an angle os to the bedding plane, determined from the expression with ^S 2L _O 6p 'where yy is the power of the direct roof, m;

This is the primary step of the collapse of the rocks of the main roof, m, and the explosion of explosive charges is carried out first in the soil, and then in the roof of the formation.