RU2013136259A

RU2013136259A - METHOD FOR OPEN DEVELOPMENT OF LARGE-SCALE DEPOSITS OF LONG LENGTH WITH INTERNAL DUMPING

Info

Publication number: RU2013136259A
Application number: RU2013136259/03A
Authority: RU
Inventors: Георгий Григорьевич Саканцев
Priority date: 2013-08-01
Filing date: 2013-08-01
Publication date: 2015-02-10
Also published as: RU2553672C2

Abstract

Способ открытой разработки крутопадающих вытянутых месторождений с внутренним отвалообразованием, при котором карьер по длине делят на очереди, из которых первую отрабатывают до проектной глубины с внешним отвалообразованием, а отработку второй очереди ведут с применением внутреннего отвалообразования, размещая вскрышные породы в выработанное пространство первой очереди с общим формированием отвальных ярусов по мере развития горных работ в направлении торца по всей глубине, отличающийся тем, что рабочую зону по высоте делят на две части, вскрытие и отработку нижней части производят наклонными продольными слоями с подъемом 20-25% в сторону торца с помощью колесных погрузчиков и автотранспорта, способного преодолевать эти крутые уклоны, высота нижней части определяется по выражениюH=2B+h/i-Ш,где B- ширина транспортной площадки, м; h- высота рабочего уступа, м; i - уклон вскрывающих выработок, доля ед.; Ш- ширина дна карьера, м,отработку верхней части рабочей зоны производят с применением поперечной системы разработки и скользящих съездов, ширину которых принимают исходя из условия размещения на них развала взрываемой горной массы при их расширении и одновременно обеспечения двухстороннего проезда транспортных средств, обеспечивающих грузотранспортную связь между ниже- и вышележащими уступами, отработку наклонных продольных слоев нижней части рабочей зоны ведут отдельными последовательно формируемыми сверху вниз крутонаклонно-горизонтальными слоями с максимальной высотой, определяемой с учетом траектории движения ковша погрузчика, при отработке каждого очередного крутонаклонно-горизонтального слоя горA method for open-cast mining of steeply dipping elongated deposits with internal dumping, in which the quarry is divided into lengths in turn, of which the first is mined to the design depth with external dumping, and the second stage is mined using internal dumping, placing overburden in the first space mined with the general the formation of dump tiers with the development of mining operations in the direction of the end along the entire depth, characterized in that the working area is divided by height in two hours Parts, opening and mining of the lower part are performed by inclined longitudinal layers with a rise of 20-25% towards the end using wheel loaders and vehicles capable of overcoming these steep slopes, the height of the lower part is determined by the expression H = 2B + h / i-Ш, where B - width of the transport platform, m; h is the height of the working ledge, m; i - the slope of the openings, the share of units; W is the width of the quarry bottom, m, the top part of the working area is mined using the transverse development system and sliding ramps, the width of which is taken based on the conditions for placing the collapsed rock mass on them when expanding and at the same time ensuring two-way passage of vehicles providing freight transportation between the lower and overlying ledges, the development of inclined longitudinal layers of the lower part of the working area is carried out separately sequentially formed from top to bottom steeply inclined izontalnymi layers having a maximum height defined by considering trajectories loader bucket movement when developing high-angle-of each next horizontal layer mountains

Claims

A method for open-cast mining of steeply dipping elongated deposits with internal dumping, in which the quarry is divided into lengths in turn, of which the first is mined to the design depth with external dumping, and the second stage is mined using internal dumping, placing overburden in the first space mined with the general the formation of dump tiers with the development of mining operations in the direction of the end along the entire depth, characterized in that the working area is divided by height in two hours Parts, opening and mining of the lower part are performed by inclined longitudinal layers with a rise of 20-25% towards the end using wheel loaders and vehicles capable of overcoming these steep slopes, the height of the lower part is determined by the expression

H = 2B _mp + h _y / i-W _d ,

where B _Tr - the width of the transport platform, m; h _y - the height of the working ledge, m; i - the slope of the openings, the share of units; W _d - the width of the bottom of the quarry, m,

mining of the upper part of the working area is carried out using a transverse development system and sliding ramps, the width of which is taken based on the conditions for placing on them the collapse of the blasted rock mass while expanding and at the same time ensuring two-way travel of vehicles providing freight transportation between lower and overlying ledges, mining inclined longitudinal layers of the lower part of the working zone are led by steeply inclined horizontal layers with successively formed from top to bottom with Maximum Feed height determined in view of the trajectory of movement of the bucket loader, when developing each successive high-angle-horizontal layer previously loosened rock mass loader produces its recess and a loading motor vehicles installed on as close to the bottom of the horizontal areas.