scholarly journals On the parameters of an industrial motor vehicle designed to transport sized coal out of the face of an open pit

2019 ◽  
Vol 1 (1) ◽  
pp. 6-13
Author(s):  
Mulenkova A ◽  
◽  
Demchenko I.I. ◽  
Keyword(s):  
Carrying Capacity ◽  
Motor Vehicle ◽  
Structural Parameters ◽  
Computer Calculation ◽  
Open Pit ◽  
Coal Production ◽  
Processing Equipment ◽  
Coal Transportation ◽  
The Face ◽  
Basic Parameters

Introduction. Sized coal production in the face of an open pit allows to reduce its prime cost by reducing transfers and backhauls. At that, the maintenance of the quantitative and qualitative characteristics of the produced coal is highly significant. For this purpose it is suggested that the coal’s transfer from the face to the daylight surface ought to be carried out in specialized containers installed on an industrial motor vehicle being the initial link in the resource-saving and ecological technology of sized coal transportation out of the face of an open pit. The research aims to determine and substantiate the parameters of an industrial motor vehicle for sized coal transportation in specialized containers out of the face to the daylight surface. Methodology. An industrial motor vehicle parameters determining mathematical model have been worked out, which allows to determine the rational values of its carrying capacity and structural parameters. Research methods include mathematical modeling and analysis, computer calculation software tools, and physical modeling. Results. The present work has determined the range of parameters and the alternatives of structural variants of an industrial motor vehicle adapted for the specialized containers with sized coal transportation out of the face of an open pit. Interdependences between its basic parameters among themselves and between its basic parameters and external factors have been examined. The dependences between the carrying capacity and the productivity of processing equipment, time of sized coal loading into the containers, and the dimensions of a freight platform. Conclusions. Dependences derived in the present work allow to determine rational values of industrial motor vehicle parameters and come into the substantiation of excavating and loading equipment and processing equipment for co-operation in the process chain of coal production in the face of an open pit.

ABOUT THE CAPACITY OF THE RECEIVING HOPPER OF THE QUARRY CRUSHING PLANT

ASJ. ◽  
2021 ◽  
Vol 1 (49) ◽  
pp. 49-51
Author(s):  
I. Zharikov
Keyword(s):  
Carrying Capacity ◽  
Open Pit ◽  
Analytical Expression ◽  
Dump Trucks ◽  
Crushing Plant

The results of the analysis of the application of the methods of the theory of queuing for calculating the capacity of the receiving hopper of an open-pit crushing plant used in combination with a combined automobile-conveyor transport are presented. An analytical expression is given for calculating the capacity of the bunker, taking into account the minimum possible duration of the interval between unloading dump trucks into the bunker. The capacity of the receiving hopper of the crushing plant with a capacity of 4300 t / h was determined when working with dump trucks with a carrying capacity of up to 180 tons.

scholarly journals Selection of Coal Transportation Company Based on Fuzzy SWARA-COPRAS Approach

Logistics ◽  
2022 ◽  
Vol 6 (1) ◽  
pp. 7
Author(s):  
Ziquan Xiang ◽  
Muhammad Hamza Naseem ◽  
Jiaqi Yang
Keyword(s):  
Transportation Costs ◽  
Coal Production ◽  
Road Transportation ◽  
Coal Transportation ◽  
Index Weight ◽  
Copras Method ◽  
Selection Of ◽  
Transportation Company

Background: Coal production and marketing enterprises can significantly reduce transportation costs and improve their competitiveness by choosing appropriate road transportation companies. Methods: Based on this, a trapezoidal fuzzy SWARA-COPRAS method is proposed to select coal transportation companies. The trapezoidal fuzzy SWARA method is used to determine the index weight of coal transportation companies. The ranking of coal transportation companies is determined using the trapezoidal fuzzy COPRAS method. Results: Taking a coal production and marketing enterprise in Hubei, China as an example, the application of the trapezoidal fuzzy SWARA-COPRAS method is illustrated, and the coal transportation companies are sorted and analyzed for sensitivity. Conclusions: Compared with the results of other methods, the effectiveness and practicability of the trapezoidal fuzzy SWARA-COPRAS method are verified.

scholarly journals Recommendations for determining the thickness of the road pavement of technological roads built from coal-bearing rocks

2019 ◽  
Vol 134 ◽  
pp. 01013
Author(s):  
Victor A. Shalamanov ◽  
Sergey N. Shabaev ◽  
Faruz Alama
Keyword(s):  
Asphalt Concrete ◽  
Open Pit ◽  
Open Pit Mining ◽  
Coal Production ◽  
Mining Method ◽  
Cement Concrete ◽  
Mining Company ◽  
The Road ◽  
Road Pavement ◽  
The Cost

With open-pit mining method in Kuzbass is widely used automobile transport, transportation costs up to 70% of the cost of coal production. It is not economically feasible to use asphalt concrete and cement concrete as a material of temporary technological roads, and the use of crushed coal-bearing rocks will make it possible to increase the efficiency of coal mining by open method. Currently, the question of the application of the coal-bearing rocks for building temporary technological roads is poorly studied. The paper proposes a method of determining the thickness of road pavements of technological roads, which can be applied directly by the mining company, their analysis has been carried out, the dependence from the strength factor and the category of blockiness of foundation rocks has been determined.

Analysis and Dispose of Deviation of Mine Belt Conveyor

2014 ◽  
Vol 608-609 ◽  
pp. 685-688
Author(s):  
Miao Zhang ◽  
Hong Liang Gao ◽  
Yang Zhang ◽  
Peng Zhan Wang
Keyword(s):  
Mining Area ◽  
Pivotal Role ◽  
Coal Production ◽  
Production Operation ◽  
Belt Conveyor ◽  
Coal Transportation

In order to improve the efficiency of coal production, the security and stability of the coal transportation plays a pivotal role. According to belt conveyor production operation of Huaibei mining area, this paper analyzes in detail the reasons of the deviation of belt and proposes some effective measures.

3D Finite Element Analysis on ChaHanWuSu CFRD Built on Thick Alluvium Deposits

2011 ◽  
Vol 243-249 ◽  
pp. 4482-4487 ◽  
Author(s):  
Da Wei Sun ◽  
Kang Ping Wang ◽  
Hui Qin Yao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Computer Calculation ◽  
Element Analysis ◽  
Produce Water ◽  
3D Finite Element ◽  
3D Mesh ◽  
3D Finite Element Analysis ◽  
The Face ◽  
Cushion Layer

As a very popular dam style, more concrete- faced rockfill dams have been built in the world, but there is presently only a few high CFRDs with dam height more than 100m built on thick alluvium deposits. ChaHaWuSu CFRD with dam height 107.60m and the maximum thickness of alluvium deposits 46.70m, has been built in Xinjiang province, China recently. The excessive of displacement of foundation and dam body may lead to big deformation of peripheral joint and cause the failure of seal materials and produce water leakage. Therefore, 3D finite element analysis was carried out to estimate the deformation of dam. Firstly, 3D mesh including surrounding mountain and alluvium deposits was established by use of advanced grid discreteness technique. Secondly, Desai thin layer elements were adopted to model the interface between the face slab and cushion layer. Moreover, joint elements were adopted to model the joints between the face slab and plinth, plinth and connecting slab, connecting slab and connecting slab, connecting slab and diaphragm wall. Finally, large scales of equations solving method were adopted in the procedure thus the computer calculation time was greatly reduced. The calculation result was compared with the monitored deformation date of ChaHaWuSu CFRD. All in all, the above research will do much benefit to the CFRD design on thick alluvium deposits.

Environmental carrying capacity and tourism development in the Maldives and Nepal

1997 ◽  
Vol 24 (4) ◽  
pp. 316-325 ◽  
Author(s):  
KATRINA BROWN ◽  
R. KERRY TURNER ◽  
HALA HAMEED ◽  
IAN BATEMAN
Keyword(s):  
Natural Resources ◽  
Carrying Capacity ◽  
Fundamental Problem ◽  
Tourism Development ◽  
Environmental Damage ◽  
Solid Waste Disposal ◽  
Resource Base ◽  
Poor Countries ◽  
The Face ◽  
Natural Resource Base

Tourism is regarded by many countries, particularly resource-poor countries, as a potential stimulus to the economy. Yet tourism, by the nature of the activities involved, is constrained by the natural resource base and infrastructure, and by the pollution and other environmental and social impacts of tourist numbers. Tourism development strategies of national governments have been diverse in the face of this complex relationship between the economic costs and benefits of tourism. This paper examines tourist development based on concepts of open access and renewable natural resources. The experiences of two economies highly dependent on tourism, the Maldives and Nepal, are compared and contrasted. Although these countries offer very different attractions to tourists, they are faced with similar problems in terms of adverse environmental impacts of tourism. The dominant impacts in both areas are those associated with solid waste disposal and water resources, compounded by the depletion of natural resources. Both countries are currently employing 'dispersal' techniques to overcome the adverse impacts of tourism, but such strategies do not address the fundamental problem of maintaining tourism revenues whilst minimizing environmental damage. Even if an ecological carrying capacity can be defined, the experiences of these two countries indicate that impacts on local communities may well exceed so-called cultural carrying capacity.

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