SU875043A1

SU875043A1 - Method of solid roof control

Info

Publication number: SU875043A1
Application number: SU802872111A
Authority: SU
Inventors: Юрий Филиппович Савенко; Дмитрий Дмитриевич Глазов; Станислав Владимирович Антюхов; Виктор Алексеевич Аладышев; Виктор Иванович Лиликович
Original assignee: Коммунарский горно-металлургический институт; Тульский Политехнический Институт
Priority date: 1980-01-22
Filing date: 1980-01-22
Publication date: 1981-10-23

Description

II

Изобретение относитс к горной промыш ленности и предназначено дл управлени труднообрушающейс кровлей в длинных очистных забо х при ее первой осадке.The invention relates to the mining industry and is intended to control a roof that is hard to break in long clearing holes during its first draft.

Известен способ управлени труднообрушающейс кровлей при разработке угольных пластов длинными йтолбами, осущест- вл емый путем бурени скважин в кровле пласта перпендикул рно к фронту очистных работ из выработок, проводимых впереди линии очистного забо параллельно последней с рассто нием между выработками, мень- ,д шим двух длин скважин, с последующим взрыванием последних 1.There is a known method of controlling a hard-topping roof in the development of coal seams with long holes, carried out by drilling holes in the roof of the reservoir perpendicular to the front of the clearing works from the workings held ahead of the clearing line parallel to the last one with a distance between the workings of less than two well lengths, followed by blasting the last 1.

Однако данный способ характеризуетс недостаточной безопасностью при очистной выемке.However, this method is characterized by inadequate safety during the clearing recess.

Известен способ управлени труднооб- $ рущающейс кровлей, включающий бурение до иачала очистных работ из штреков вертикальными BeepiaMH взрывных скважин па раллельно линии очистного забо и их взрывание 2.There is a known method of controlling a hard-to-collapsing roof, which includes drilling of drift wells vertical BeepiaMH parallel to the clearing-hole line and their blasting 2, up to the beginning of the cleaning work from the drifts.

Однако известный способ характеризует- 20 с большими динамическими нагрузками на крепь при первичных осадках кровли.However, the known method characterizes - 20 with large dynamic loads on the lining during the initial precipitation of the roof.

Цель изобретени - исключение динамических нагрузок на крепь при перви ных осадках кровли за счет ликвидации ее зависани .The purpose of the invention is the elimination of dynamic loads on the lining during the first precipitation of the roof due to the elimination of its suspension.

Поставленна цель достигаетс тем, что скважины бур т позади линии очистного забо , а их взрывание производ т до начала очистных работ.The goal is achieved by the fact that the wells are drilled behind the clearing line and their blasting is performed before the start of the cleaning operation.

На фиг. 1 показана схема заложени взрывных скважин в плоскости пласта; на фиг. 2 - схема заложени взрывных скважин вкрест простирани пласта.FIG. 1 is a schematic of the initiation of explosive wells in the formation plane; in fig. 2 is an explosive wellbore pattern across the strike of the formation.

Способ управлени труднообрушающейс кровлей осуществл етс следующим образом .The method of controlling a hard-wearing roof is as follows.

Claims

From the preparatory workings I behind the installation chamber 2, parallel to the line of the clearing of the bottom, fans of explosive wells 3 are drilled. It is also possible to drill these wells until the completion of the installation chamber and the installation of the complex. The distance between the plane of drilling of wells and the installation chamber should not exceed 3 m. The wells are drilled using commercially available drilling equipment used in torpedoing the roof. Borehole setting parameters are calculated in the same way as for the case of advanced torpedoing using existing methods. Before the start of the cleaning operation, wells were blown up. The proposed method of managing a hard-to-damage roof will eliminate the dynamic loads on the lining during the initial precipitation of the roof. Claims method of managing a hard-to-collapsing roof, including drilling vertical holes of explosive wells parallel to the clearing bore line prior to the start of cleaning works from shchtrek, characterized in that, in order to eliminate dynamic loads on roof supports during primary precipitation of the roof by eliminating its suspension, the drill is behind the clearing line, and their blasting is performed prior to the start of the cleaning operation. Sources of information taken into account during the examination 1. USSR author's certificate No. 582402, cl. E 21 C 41/04. 1974.

2. Authors certificate of the USSR. No. 313979, cl. E 21 D 23/00, 1966 (prototype).