Page 1 of 6
European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online:https://ejbss.org/ P a g e | 1532
Research on the relationship between the performance indicators of
technological transport deep pits
Saidova Lola Shodievna
Navoi branch Academy of Sciences Republic of Uzbekistan
Abstract
This article deals with the study of the relationship of performance indicators
of technological transport with the mining conditions of deep quarries. The in
flounce of mining factors on the transportation of rock with the use of various
types of transport, as one of the main processes for the production of open cast
mining, is substantiated. The scopes of various types of transport are justified
depending on the open-pit mine productivity and transportation distance.
Key words: deep quarry, quarry transport, mountain mass, mining conditions,
vehicles, conveyor, transportation distance.
A feature of the development of open pit mining at great depths is the
complication of mining conditions of development. Mining conditions for the
development of mineral deposits in the coming years will be characterized by a
further increase in the depth of the quarry and transportation distances, an increase
in the share of hard rocks and ores in the total volume of rock mass, which will
lead to an increase in production costs and reduce its competitiveness.
The efficiency of the mining enterprises is determined by the direction of
development of mining in the career field. The process of mining and extraction of
enclosing and covering rocks is characterized by two main directions of
development of mining operations: in depth, characterized by the direction of the
dredging, and in the horizontal direction. To maintain the production capacity of
the quarry at the proper level, intensive development of work in both directions is
necessary.
In deep quarries, before the quarry transport, there are the tasks of
maintaining sufficiently high productivity and maintaining the pace of deepening
mining operations, reducing the length of transport communications, and ensuring
the necessary efficiency of development. As a rule, compliance with these
conditions is achieved only with the consistent use of several modes of transport in
a single transport network, i.e. combination of transport. With combined use, each
Page 2 of 6
European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online:https://ejbss.org/ P a g e | 1533
type of transport operates in the most convenient and favorable conditions for it. In
this regard, the choice of career transport, the evaluation of its main parameters and
technical and economic indicators are of particular importance.
The variability of the mining characteristics of rock deposits significantly
affects the efficiency of mining, significantly complicating the choice of
technological parameters of transport and other mining processes.
The marked negative trends associated with a decrease in mining operations
are also characteristic of Muruntau’s deep quarry, in which mining operations may
in the future descend to a depth of 850 m or more. To reduce the negative impact
of the depth of the pit on the efficiency of mining, theoretical studies of the
relationship between the performance of technological transport and the mining
conditions of deep open pit mines have been carried out, which allow evaluating
the effectiveness of various types of deep pit open pit transport.
As a rule, the development of a structurally complex field inevitably leads to
technological and technical difficulties associated with the organization of work,
the selection and management of technological process parameters, including no
less important when choosing a rational scheme of transportation of rock mass.
The intensive increase in the depth of open-cast mining required the study of
the influence of the mining conditions of quarries on the performance of
technological vehicles. The index of the depth of the quarries in this case is
decisive.
Earlier studies on the impact of mining and technical conditions of deep
quarries on the work of transport, an indicator of the below (equivalent)
transportation distance was taken, taking into account the labor costs of horizontal
movement and lifting of the rock mass from the quarry [1,2]. There are direct
dependences between the horizontal transportation distance, lifting height and
reduced transportation distance with a correlation coefficient, which allows to
establish their relationship with the mining conditions of quarries, which is a
reliable basis for planning and designing mining and transport operations on deep
horizons [2].
The deterioration of the performance of transport in deep quarries necessitates
finding ways to intensify it, replacing it with another type of transport or using
several types of transport, each of which is assigned a certain spatial area of the
quarry. In these cases, several modes of transport can be used in parallel or in
Page 3 of 6
European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online:https://ejbss.org/ P a g e | 1534
combination. In the practice of open work in deep foreign quarries and domestic
quarries [3-7] the most common combination of road with rail, as well as conveyor
transport.
The introduction of combined transport reduces fuel costs, reduces personnel,
increases productivity in some cases, improves working conditions for people in
the quarry and protects the environment while maintaining the flexibility of the
system based on the use of dump trucks. With combined use, each type of transport
operates in the most convenient and favorable conditions for it.
The fullest use of all the advantages of the combined transport can be
achieved with proper justification of the scope of its application and ensuring
rational conditions for vehicles, depending on the number, location in the quarry
space and the transfer step of the transfer points.
In justifying the use of various modes of transport, the predominant goal is to
reduce transportation costs in the quarry. In this case, other technical and
technological parameters should also be taken into account. Research has
established that a rational sphere of one or another type of transport may be limited
depending on two main factors: the productivity of the excavation and loading
complex and the distance of transportation.
It has been established that with limited productivity, it is rational to use
motor transport even over long distances; with a fairly high pit career, conveyor
transport turns out to be profitable even at short transport distances [8].
Capital expenditures for automobile conveyor transport are higher than for
motor transport, but slightly lower than motor transport by rail, and compared with
the latter are repaid in a shorter period.
The Muruntau deposit is characterized by high variability of gold content in
the ore, and the complex structure of the ore bodies. The ore is delivered to the
transshipment points of the open pit by road. The concept of the development of
the Muruntau open-pit mine envisages the transfer of the ore flow to the motor- conveyor transport. Therefore, the methods and means of controlling the quality of
the ore flow in the process of developing the Muruntau open-pit mine in stage V
undergo significant changes. At the same time, efforts are directed mainly at
solving the problem of the formation of the ore flow of the required quality inside
the open-pit mine during the cyclical flow technology of work.
