82 }mepceŠh)eqjne ung"iqŠbn. 'bŠnl'Šhg'0h" Введение Буровая техника на карьерах России представлена в основном 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 удельный вес буровых работ в общей стоимости добычи полезного ископаемого достигает 30 % и более [1]. А. О. ШИГИН, доцент, д-р техн. наук, shigin27@rambler.ru А.

more »

... ГИЛЁВ, проф., д-р техн. наук А. А. ШИГИНА, аспирант Сибирский федеральный университет, Красноярск, Россия УДК 622.233.05:621.3 njǎǞǚǘnjǞǔǓnjǢǔǫ ǤnjǜǚǤǑǣǙǚǏǚ ǍǟǜǑǙǔǫ ǎǓǜǧǎǙǧǡ ǝǖǎnjǒǔǙ Ǚnj ǖnjǜǨǑǜnjǡ Необходимость создания дистанционно управляемых или автономных шарошечных буровых станков возникла по причине высокой вредности и опасности условий труда. Для эффективного дистанционного управления бурением необходим специальный технический комплекс, учитывающий особенности работы станка и бурового инструмента. При бурении массивов горных пород, характеризующихся сложной структурой, требуется постоянная корректировка режимных параметров. Таким образом, при отработке карьера бурение должно быть интеллектуализированным. Ключевые слова: автономный буровой станок, интеллектуальная система бурения, бурение сложноструктурных массивов горных пород, адаптивный вращательно-подающий механизм. Abstract The 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. Abstract In Russia and abroad the main volume of drilling in open pit mines is performed by rotary drilling rigs. The article highlights the lack in the technology and equipment of rotary drilling, including the methods to optimize control over basic parameters of the process. The importance of drilling process automation, down to creation of unmanned technologies, is conditioned by a rapid rate of growth in production output and a higher personnel risk in mining under increasingly complicated operating conditions both for the machine and the operator. The need to create the remote-controlled or autonomous rotary drilling rigs is caused by the highly hazardous working conditions. The e ective remote control of drilling requires a special technical system taking into account the peculiarities of the machine and drilling tools. Drilling in complex-structure rock masses requires continuous adjustment of operating parameters. Thus, drilling in open pit mines should be intellectualized. The article indicates the need to use adaptable rotary feeders in combination with the monitoring system for the structure and strength characteristics of rocks in the array of intelligent control of rotary drilling. It is proposed to use an adaptable sensor with the quick feedback and adaptable damping function. The problem of uncertainty of rock properties is proposed to be handled by monitoring the changes in the rock properties and by implementing stepwise adjustments of drilling parameters using the developed calculation methods.