82 }mepceŠh)eqjne ung"iqŠbn. `bŠnl`Šhg`0h"
ВведениеБуровая техника на карьерах России представлена в основ-ном станками шарошечного бурения (до 95 % всего парка). Это обусловлено технологией разработки месторождений открытым способом и необходимостью бурения сетки взрывных скважин с последующим подрывом массива горных пород. При этом удель-ный вес буровых работ в общей стоимости добычи полезного ис-копаемого достигает 30 % и более [1].
AbstractThe author proposes to predict electric energy consumption in a coal mine using the botom-up ow modeling based on the hierarchy of constituents. At the top of the model hierarchy is a 'system' (coal mine) composed of lower scale objects or 'subsystems' (ensemble of mining equipment grouped based on a certain criterion, e.g. mining equipment of extraction panels, mining equipment of permanent roadways, etc.). The state of the object 'system' is described with a set of characteristics which assign admissible states for each 'subsystem' . Each object 'subsystem' is composed of the objects of the next lower level of the hierarchy, and the state of each 'subsystem' is described with a set of characteristics which assign states for that lower level objects named 'members' (cutter-loaders, conveyors, main mine drainage pumps, reloaders, etc.). This problem is solved using one of the most promising methods for the numerical modeling of random processes -direct simulation Monte Carlo method. Mining equipment is a system possessing nite number of states, and each simulation of evolution of states uses the method of probabilistic automata to generate transitions between the states according to a certain pre-set rule. Using the Microsoft Solutions Framework, the programmable solution is constructed for the numerical modeling of the Markov processes of a system evolution under random impacts and is implemented as a stand-alone application for Windows XP based on Microsoft Visual Basic 10.0. The test of the programmable solution using an exactly solvable model of a machine operating cycle has shown that the resultant current average values otained to an accuracy not higher than 11% o er su cient information on distribution of probabilities for the analyzed parameters of the system. The energy consumption regularities found for individual members, subsystems and the systemmine as a whole using the proposed model are applicable to solving problems of energy e ciency improvement both in the stage of mine design and under normal operation.
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83ǏǚǜǙǧǕ ǒǟǜǙnjǗ, 2017, ȱ 2 }mepceŠh)eqjne ung"iqŠbn. `bŠnl`Šhg`0h"Длительное время конструкции станков шарошечного бурения отечественных и зарубежных производителей не модернизирова-лись. Все изменения были направлены, как правило, на улучше-ние эргономики, механизацию и автоматизацию некоторых про-межуточных операций [2, 3]. Основные процессы, связанные не-посредственно с бурением скважины, в настоящее время не ав-томатизированы.Необходимость создания дистанционно управляемых или ав-тономных шарошечных буровых станков возникла по причине вы-со...
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