SU898065A1

SU898065A1 - Method of excavating minerals by auger-drill unit

Info

Publication number: SU898065A1
Application number: SU792853615A
Authority: SU
Inventors: Анатолий Ильич Зильберман; Валентин Николаевич Кухарев; Юрий Николаевич Бабец; Владимир Васильевич Харченко; Анатолий Иванович Ковалев; Эдуард Григорьевич Кабат; Виктор Афанасьевич Протасов; Николай Андреевич Сетраков
Original assignee: Днепропетровский Ордена Трудового Красного Знамени Горный Институт Им.Артема
Priority date: 1979-12-17
Filing date: 1979-12-17
Publication date: 1982-01-15

Description

II

Изобретение относитс к горной Промышленности и может быть использовано при разработке буроугольных и рудных осадочного происхождени месторождений полезных ископ-аемых, залегающих в рыхлых, слабых породах.The invention relates to the mining industry and can be used in the development of lignite and ore sediments of mineral deposits found in loose, weak rocks.

Известен способ выемки полезных ископаемых бурошнековой установкой без остановлени целиков с применением пневматических кондукторов 1,1 J.There is a method of excavation of minerals with a brown-screw installation without stopping the pillars using pneumatic conductors 1.1 J.

Однако этот способ, обеспечива сокращение потерь в междускваженных целиках, требует больших денежных и трудовых затрат на приобретение кондукторов с пневмобаллонами и их монтаж и демонтаж в скважинах.However, this method, ensuring the reduction of losses in between-pillar pillars, requires large monetary and labor costs for the purchase of conductors with air bellows and their installation and disassembly in wells.

Известен также способ выемки полезных ископаемых бурошнековой установкой , включающий бурение скважин по полезному ископаемому с оставлением между ними целиков и последующее их выбуривание f 2.There is also known a method of excavation of minerals by a blast-type installation, including the drilling of wells for the mineral, leaving the pillars between them and their subsequent drilling out f 2.

Недостаток этого способа заключаетс в том, что он, исключа по-.The disadvantage of this method lies in the fact that it, excluding -.

тери и разубоживание полезного ископаемого , требует больших материальных и трудовых ресурсов.teri and dilution of minerals, requires large material and labor resources.

Цель изобретени - повышение эффективности .The purpose of the invention is to increase efficiency.

Указанна цель достигаетс тем, что перед выбуриванием целиков обрушают породы кровли и заполн ют ими предварительно пробуренные скважины.This goal is achieved by the fact that, before the pillars are drilled, roof rocks collapse and pre-drilled wells are filled with them.

На чертеже приведена схема выемки пластов полезного ископаемого.The drawing shows a diagram of the excavation of mineral deposits.

Claims

Mineral deposits, which lie in weak, loose rocks, carry out excavation production 1 with an upper undermining in which two drill-screw installations 2 and 3 are installed. Installation 2 begins to work the drilling of well 4, leaving only 5 pillars between them, with a width of 20 on the pillars 5 equal to the width of the paired wells. The fastening of the boreholes 1 is not carried out, but a drift guard is installed for the passage of augers. In the case of a bed in the roof of the rock sheet, for which it takes considerable time (1-2 months) to collapse into the wells and subsequent compaction, forcibly collapse, for example, using drilling and blasting operations. If the roof is weak, weak rocks, their collapse is due to the use of gravitational forces. Under the influence of the weight of the rock, which overcomes the adhesion forces, 5–15 days after the beginning of the operation of the drilling unit 2 in the wells drilled by it in the roof, the roof (clays, sands) collapses and the wells are filled (started). The collapsed rocks are compacted and bonded to the rocks that are located above the pillars 5, as a result of which these pillars receive support strips 6. This allows the pillars 5 to be pounded out by another brown-screw installation 3 with insignificant percentages of dilution and loss of mineral. Tests have shown that under production conditions, the destruction of the remaining pillars 5 during the collapse of the roof rocks in the drilled holes of the former well k practically does not occur, and the weaker and loose rock lies above the mineral layer, the more stable it is destruction, and the more effective is the proposed method, since the simple second drilling machine 3, determined by the time of complete collapse of the roof rocks, the filling of the previously drilled with installation 2 wells k and compaction is reduced to min Imum (1-3 days). The application of the proposed method of excavating minerals with a brown-screw installation in the development of low-power lignite and ore sediments of mineral deposits allows to reduce material and labor costs; increase the load on the bottom due to the use of simultaneous operation of two machines in one development and the elimination of downtime of a drilling auger installation due to the need to mount the wells with pneumocylinders; increase the concentration of mining operations, as well as the effect of the use of conveyor transport; reduce the mining time of the excavation site by almost two times, which, in turn, reduces the cost of maintaining excavation workings. The annual economic effect only due to the refusal to mount the wells with pneumatic cylinders amounts to 1,820 thousand rubles. for one excavation site. Claims of the method of excavation by a brown-screw installation, including drilling of minerals with the remaining pillars between them and their subsequent drilling, characterized in that, in order to increase efficiency, before breaking the pillars, the roof rocks collapse and fill the previously drilled wells. Sources - information taken into account during the examination 1. USSR author's certificate No. 381767, cl. E 21 C 41/00, 1972.

2. USSR Author's Certificate No. 503020, cl. E 21 C 41 / 0t, 1975 (prototype).