SOFTWARE MANAGEMENT OF THE ROCK EXCAVATION PROCESS BY A QUARRY EXCAVATOR

2020 ◽  
pp. 28-33
Author(s):  
Anatoly P. Komissarov ◽  
Yuliya A. Lagunova ◽  
Olga A. Lukashuk
Keyword(s):  
Software Management ◽  
Rock Excavation ◽  
Excavation Process

scholarly journals Determining operation parameters of the leverage mechanism in a mining excavator

2021 ◽  
Vol 1 ◽  
pp. 94-102
Author(s):  
Olga A. Lukashuk ◽  
◽  
Konstantin Iu. Letnev ◽  
Keyword(s):  
Kinematic Chain ◽  
Open Pit ◽  
Rock Excavation ◽  
Operational Parameters ◽  
Working Process ◽  
Equipment Operation ◽  
Excavation Process ◽  
Work Area ◽  
Operation Parameters ◽  
Optimizing Algorithm

Introduction. The paper analyzes the process of rock excavation using a front-shovel operational equipment of an open-pit excavator in the context of determining rational modes of operation for its main mechanisms (lifting and thrusting mechanisms) during the excavation. The main purpose of the study is to establish the kinematic and dynamic characteristics of the excavation process by identifying patterns of changes in the operating parameters of the main mechanisms. Research methodology includes mathematical modelling and computational experiment with the use of machines and mechanisms theory methods. Results. Dependencies were obtained to determine rational values of lifting and thrusting velocities which ensure that the bucket (top of its cutting edge) moves along a specified trajectory while excavating. A simulation model was built for the process of rock excavation carried out by front-shovel excavators, which represents a set of calculated values for the operational parameters of the main mechanisms to realize the bucket movement along a specified path and provide specified energy-force parameters on the bucket. An optimizing algorithm was developed to control the working process of an open-pit excavator and achieve required values of the operation parameters to get the bucket moving at a specified excavating velocity within the work area of the excavator. It is shown that their joint action forms a kinematic chain which connects the main mechanisms and the bucket and includes driven links of those mechanisms and elements of the operational equipment. Operation parameters of the main mechanisms were found to be formed in accordance with kinematic properties of the transmission mechanism (with the kinematic chain as its part). Scope of results. The results of the research could be used to develop a control system for the drives of the main mechanisms.

Huge Job of Solid Rock Excavation

1926 ◽  
Vol 135 (4) ◽  
pp. 274-275
Author(s):  
Frank W. Skinner
Keyword(s):  
Solid Rock ◽  
Rock Excavation

MANAGING INFORMATION AND COMMUNICATION TECHNOLOGIES APPLICATIONS IN THE LOWER SECONDARY SCHOOLS IN K’RONG PAC DISTRICT, DAK LAK PROVINCE IN THE CONTEXT OF TECHNOLOGY REVOLUTION 4.0

2018 ◽  
Author(s):  
Pham Van Truong
Keyword(s):  
Secondary Schools ◽  
Information And Communication Technologies ◽  
Teaching And Learning ◽  
Communication Technologies ◽  
Software Management ◽  
Active Teaching ◽  
Application Management ◽  
Local Practices ◽  
Information And Communication ◽  
Lower Secondary Schools

The author analyze deeply management status of information and communication technologies (ICTs) application in teaching at the lower secondary schools in Krong Pac District, Dak Lak province today on the back: management status of building and using multimedia classrooms; management status of using teaching software; management status of desining and using active teaching and learning (ATL) lesson plans with using ICTs; management status of using ICTs in the examination and evaluation learning outcomes of pupils from that author proposed 6 application management solutions for ICTs in the lower secondary schools in Krong Pac district, Dak Lak province in the context of technological revolution 4.0 fit the circumstances of local practices.

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