Conducted review of methods of calculation of productivity of open-pit excavators and results of verification calculations shows that, there is no uniform method that counts constantly changing physical and mechanical properties of developed rocks, technological parameters of a face, design and force parameters of an excavator, probability of its no-failure operation, casual character of transport delivery, qualification of the excavator operator, climatic conditions. Calculation of productivity of open-pit excavators under specific mining and geological conditions is made for planning and rationing of excavation and loading machines, the choice and provision of transport and establishment of a rational mode of their operation. In the given conditions of open-cut mining, an excavator, productivity depends on many natural, mining-technological, and organizational factors, which are difficult to take into account and largely interact with the design parameters of open-pit excavators. In fact, most of the factors are probabilistic in nature. As a consequence, it is advisable to define new values of productivity for each individual case based on the cumulative account of changes of multifactorial conditions of operation and technical conditions of technologically connected equipment. In this regard, it is of interest to determine the value of productivity of quarry excavators with an account of the stated factors.
Карьер экскаваторлари унумдорлигини ҳисоблаш методикаси бўйича амалга оширилган таҳлиллар ва текширув натижалари шуни кўрсатдики, экскаватор унумдорлигини аниқлаш бўйича тоғ жинсларининг физик ва механик хусусиятлари, ковжойнинг технологик ўлчамлари, экскаваторнинг конструктив ва куч ўлчамлари, узлуксиз ишлаш эҳтимоллиги, транспорт воситасининг тасодифий узатилиши, экскаватор машинистининг малакаси, климатик шароитларни инобатга олувчи ягона методика мавжуд эмас. Аниқ кон-геологик шароитлар учун экскаваторлар унумдорлигини ҳисоблаш қазиш-юклаш ишларини режалаштириш ва нормаллаштириш, транспорт воситасини танлаш ва таъминлаш ҳамда улар функционаллигининг рационал режимларини аниқлаш учун амалга оширилади. Мавжуд очиқ кон шароитлари учун экскаваторнинг унумдорлиги карьер экскаваторларининг конструктив ўлчамларига маълум миқдорда таъсир этувчи ва қийин ўлчанадиган табиий, кон-технологик, ташкилий омилларга боғлиқ. Аслида, омилларнинг аксарияти эҳтимоллик хусусиятига эга. Бунинг оқибатида ҳар бир реал ҳолат учун кўп омилли иш шароитлари ва технологик боғлиқ бўлган жиҳозларнинг техник ҳолатидаги ўзгаришларни ҳисобга олган ҳолда, унумдорлик қийматларини аниқлаш мақсадга мувофиқдир. Шу боис тоғ-кон экскаваторлари иш унумдорлиги қийматини юқоридаги омилларни ҳисобга олган ҳолда аниқлаш долзарб масаладир.
Проведенный анализ методик расчета производительности карьерных экскаваторов и результатов выполненных проверочных расчетов показывает следующее, что нет единой методики, учитывающей: постоянно меняющиеся физико-механические свойства разрабатываемых пород, технологические параметры забоя, конструктивно-силовые параметры экскаватора, вероятность безотказной его работы, случайный характер подачи транспорта, квалификацию машиниста экскаватора, климатические условия. Расчет производительности карьерных экскаваторов при конкретных горно-геологических условиях работы ведется для планирования и нормирования выемочнопогрузочных машин, выбора и обеспечения транспортом и установления рационального режима их функционирования. В заданных условиях разработок открытым способом производительность экскаватора зависит от множества природных, горно-технологических, организационных факторов, сложно поддающихся учету и в значительной степени взаимодействующих с конструктивными параметрами карьерных экскаваторов. По существу, большинство факторов носят вероятностный характер. Вследствие этого для каждого реального случая на основе совокупного учета изменений многофакторных условий эксплуатации и технического состояния технологически увязанного оборудования целесообразно определять значения по производительности. В связи с этим представляет интерес вопрос определения значения производительности карьерных экскаваторов с учетом изложенных факторов.
Conducted review of methods of calculation of productivity of open-pit excavators and results of verification calculations shows that, there is no uniform method that counts constantly changing physical and mechanical properties of developed rocks, technological parameters of a face, design and force parameters of an excavator, probability of its no-failure operation, casual character of transport delivery, qualification of the excavator operator, climatic conditions. Calculation of productivity of open-pit excavators under specific mining and geological conditions is made for planning and rationing of excavation and loading machines, the choice and provision of transport and establishment of a rational mode of their operation. In the given conditions of open-cut mining, an excavator, productivity depends on many natural, mining-technological, and organizational factors, which are difficult to take into account and largely interact with the design parameters of open-pit excavators. In fact, most of the factors are probabilistic in nature. As a consequence, it is advisable to define new values of productivity for each individual case based on the cumulative account of changes of multifactorial conditions of operation and technical conditions of technologically connected equipment. In this regard, it is of interest to determine the value of productivity of quarry excavators with an account of the stated factors.
| № | Author name | position | Name of organisation |
|---|---|---|---|
| 1 | Mahmudov S.A. | texnika fanlari bo‘yicha falsafa doktori (PhD),“Konchilik elektr mexanikasi” kafedrasi dotsenti | Navoiy davlat konchilik va texnologiyalar universiteti |
| № | Name of reference |
|---|---|
| 1 | Andreeva J.I. Metodika formirovaniya tekhnicheskoy sluzhby na ugledobyvayushchem predpriyatii [Methodology of technical service formation at a coal-mining enterprise]. Abstract of Doctor’s degree dissertation. Chelyabinsk, 2004, 52 p. |
| 2 | Velikanov V.S., Olizarenko V.V. Opredeleniye proizvoditel’nosti odnokovshovogo gusenichnogo ekskavatora s uchetom professional’nykh navykov mekhanizatora [Determination of the single-bucket crawler excavator performance taking into account the machine operator’s professional skills]. Mining, Processing and Application of Natural Stone. Proceedings of scienti�ic works, 2009, pp. 85–91. |
| 3 | Zharikov S.N. Uluchshena otsenka proizvoditel’nosti kar’yernykh ekskavatorov [Improved estimation of the productivity of quarry excavators]. Journal of the Mining Institute, 2018, vol. 229, p. 56. DOI: 10.25515/pmi.2018.1.56/. |
| 4 | Ivanov S.L. Izmeneniye narabotki sovremennykh otechestvennykh ekskavatorov EKG v zavisimosti ot usloviy ikh ekspluatatsii [Variation in the operating time of modern domestic EKG excavators as a function of their operating conditions]. Journal of the Mining Institute, 2016, vol. 221, p. 692. DOI: 10.18454/pmi.2016.5.692/. |
| 5 | Ivanov S.L., Ivanova P.V., Kuvshinkin S.Y., Shibanov D.A. Otsenka vliyaniya pogodnoklimaticheskikh faktorov na otkazoustoychivost’ oborudovaniya mineral’no-syr’yevogo kompleksa [Evaluation of the impact of weather and climate factor on the resilience of mineral and raw material complex equipment]. Resources of the European North. Technologies and economics of development, 2018, no. 4 (14), pp. 17–27. |
| 6 | Ivanova P.V., Asonov S.A., Ivanov S.L., Kuvshinkin S.Y. Analiz struktury i nadezhnosti sovremennogo parka kar’yernykh ekskavatorov [Analysis of the structure and reliability of the modern fleet of open-pit excavators]. Mining Information and Analytical Bulletin, 2017, no. 7, pp. 51–58. |
| 7 | Ivanova P.V., Ivanov S.L., Kuvshinkin S.Y., Shibanov D.A. Indeks zhestkosti pogody kak integral’nyy pokazatel’ vliyaniya pogodnykh usloviy na rabotu kar’yernykh ekskavatorov [Weather hardness index as an integral indicator of the impact of weather conditions on the performance of quarry excavators]. Proceedings of the III International Scientific and Practical Conference. Mining Information and Analytical Bulletin, 2017, no. 12, spec. iss. 38, vol. 2, pp. 359–365. |
| 8 | Podernyy R.Y. Analiz tekushchego sostoyaniya rynka kar’yernoy tekhniki v mire [Analysis of the current state of the quarry machinery market in the world]. Mining Industry, Moscow, 2013, no. 4 (110), pp. 48–54. |
| 9 | Podernyy R.Y. Analiz tekushchego sostoyaniya mirovogo rynka postavok kar’yernoy tekhniki (mekhanicheskiye ekskavatory i draglayny) [Analysis of the current state of the world market for the supply of quarry equipment (mechanical shovels and draglines)]. Mining Industry, Moscow, 2013, no. 6 (111), vol. 2, pp. 14–19. |
| 10 | Sytenkov V.N., Ganin A.R., Donchenko T.V., Shibanov D.A. Analiz primeneniya kanatnykh i gidravlicheskikh ekskavatorov na otkrytykh gornykh rabotakh [Analysis of applications of rope and hydraulic excavators in open pit mining]. Rationale Exploitation of Subsoil, Moscow, 2014, no. 3, pp. 30–34. |
| 11 | Anistratov K.Y., Konopelko S.A. Optimal’nyy srok sluzhby kar’yernykh odnokovshovykh ekskavatorov [Optimal service life of pit single-bucket excavators]. Mining Industry, Moscow, 2012, no. 3, pp. 8–12. |
| 12 | Anistratov K.Y. TEO effektivnosti primeneniya kar’yernykh ekskavatorov EKG-18 s reyechnoy tyagoy PAO «Uralmashzavod» na ugol’nykh shakhtakh [Feasibility study of the effectiveness of using open-pit excavators EKG-18 with a rack-and-pinion thrust of PJSC Uralmashzavod in coal mines]. Mining, 2016, no. 3 (9), pp. 6–11. |
| 13 | Velikanov V.S. Prognoz zagruzki rabochego oborudovaniya kar’yernykh ekskavatorov po nechetko-logisticheskoy modeli [Prediction of loading of working equipment of open-pit excavators by fuzzy-logistic model]. Journal of the Mining Institute, 2020, vol. 241, p. 29. DOI: 10.31897/ pmi.2020.1.29/. |
| 14 | Ivanov S.L., Ivanova P.V., Kuvshinkin S.Y. Otsenka proizvodstva kar’yernykh ekskavatorov perspektivnogo model’nogo ryada v neslozhnykh usloviyakh ekspluatatsii [Estimation of production of prospective model range quarry excavators in minor operating conditions]. Memoirs of the Mining Institute, 2020, vol. 242, p. 228. DOI: 10.31897/pmi.2020.2.228/. |
| 15 | Ivanova P.V. Vyyavleniye zakonomernosti izmeneniya narabotki kar’yernogo elektroekskavatora bol’shoy yedinichnoy moshchnosti s uchetom vozdeystviya prirodnotekhnogennykh faktorov [Identi�ication of a pattern of change in the operating time of an open-pit electric excavator of large unit capacity taking into account the impact of natural-technogenic factors]. Abstract of PhD thesis. St. Petersburg, 2018, 24 p. |
| 16 | Kantovich L.I., Litvin O.I., Khoreshok A.A., Tyuleneva E.A. Opyt i perspektivy primeneniya gidravlicheskikh ekskavatorov pri otrabotke uglenasyshchennykh zon ugol’nykh shakht Kuzbassa [Experience and prospects of using hydraulic excavators during mining of coal-saturated zones at Kuzbass]. Mining Information and Analytical Bulletin, 2019, no. 4, pp. 152–160. DOI: 10.25018/0236- 1493-2019-04-0-152-160/. |
| 17 | Shibanov D.A., Shishlyannikov D.I., Ivanova P.V., Ivanov S.L. Kompleksnaya otsenka faktorov, opredelyayushchikh narabotku ekskavatorov EKG novoy proizvodstvennoy lineyki proizvodstva IZKARTEKS [Comprehensive assessment of factors determining the operating time of EKG excavators of the new productive line produced by IZ-KARTEX]. Mining Equipment and Electro Mechanics, 2015, no. 9 (118), pp. 3–9. |
| 18 | Faul A.A. Increasing the efficiency of quarry equipment complexes. Journal of the Mining Institute, 2010, vol. 186, p. 86. |
| 19 | Samwel V.M. Investigation of excavator performance factors in an open-pit mine using loading cycle. Timen Engineering, 2017, January, vol. 09 (07), pp. 599–624. DOI: 10.4236/eng.2017.97038/. |
| 20 | Venkatesh J. An introduction to Total Productive Maintenance (TPM). Available at: http:// www.plant maintenance.com/articles/tpm_intro.pdf/ (accessed 11.10.2017). |
| 21 | Kvaginidze V.S. Diagnostika, tekhnicheskoye obsluzhivaniye i remont kar’yernogo gornotransportnogo oborudovaniya v usloviyakh nizkikh temperatur [Diagnostics, maintenance and repair of quarry mining transport equipment in conditions of low temperatures]. Abstract of Doctor’s degree dissertation. Kemerovo, 2003, 422 p. |
| 22 | Lukashuk O.A., Letnev K.Y. Opredeleniye energozatrat pri ekskavatsii grunta [Determination of energy consumption when excaving soil]. Mining Information and Analytical Bulletin, 2018, no. 6, pp. 113–118. DOI: 10.25018/0236-1493-2018-6-0-113-118/. |
| 23 | Malafeev S.I., Serebrennikov N.A. Povysheniye energoeffektivnosti kar’yernykh ekskavatorov za schet modernizatsii elektrooborudovaniya i sistem upravleniya [Increasing the energy efficiency of quarry excavators through the modernization of electrical equipment and control systems]. Coal, Moscow, 2018, no. 10, pp. 30-34. |
| 24 | Malafeev S.I., Konyashin V.I., Novgorodov A.A. Excavator EKG-20: new technical solution of mechatronic complex. Coal, 2019, no. 7, pp. 4–7. DOI: 10.18796/0041-5790-2019-7-4-7/. |
| 25 | Mislibayev I.T., Makhmudov A.M., Makhmudov Sh.A. Teoreticheskoye obobshcheniye rezhimov funktsionirovaniya i modelirovaniye ekspluatatsionnykh pokazateley ekskavatorov [Theoretical generalization of functioning modes and modelling of operational indicators of excavators]. Mining Information and Analytical Bulletin, 2021, no. 1, pp. 102–110. DOI: 10.25018/0236-1493-2021-1-0- 102-110/. |
| 26 | Makhmudov Sh.A. Systematization of functional elements of the structure of complex mechanization at careers. Australian Journal of Science and Technology, 2020, March, vol. 4; no. 1, pp. 222–227. |
| 27 | Opanasenko P.I., Isaichenkov A.B. Novyy sposob opredeleniya vliyaniya granulometricheskogo sostava porody na parametry prokhodki [New way of determining the effect of rock grain size distribution on excavation parameters]. Mining Information and Analytical Bulletin, 2017, no. 1, pp. 317–226. |
| 28 | Ivanov S.L., Shishkin P.V. Integral criterion of mining machines technical condition level at their operation. Proceedings of the IOP Conf. Series: Earth and Environmental Science, 2017, vol. 87, no. 022009. DOI: 10.1088/17551315/87/2/022009/. |
| 29 | Mislibayev I.T., Makhmudov Sh.A. Investigation of productivity of open-pit excavators at different technological processes. Mining Bulletin of Uzbekistan, Navoi, 2019, no. 2 (77), pp. 113–117. |
| 30 | Shibanov D.A., Ivanov S.L., Fokin A.S., Zvonarev I.E. Sovershenstvovaniye strategii tekhnicheskogo obsluzhivaniya kanatnykh elektroekskavatorov putem vvedeniya v sistemu tekhnicheskogo obsluzhivaniya elementov podderzhaniya obshchey proizvoditel’nosti [Improvement of maintenance strategy of electric wire rope excavators by introducing elements of Maintaining overall performance into maintenance system]. Journal of the Mining Institute, 2014, vol. 209, p. 109. |
| 31 | Paterson L.B., Özdoğan M. Performance of the bigger, faster and smarter new generation electric mining shovels. Proceedings of the 17 International Mining Congress and Exhibition of Turkey, 2019, December, pp. 237–242. |
| 32 | Zimmermann E., Sammut G. Pioneering developments on Mining Hydraulic Excavators to cope with high altitude operation. Mine Planning and Equipment Selection (MPES), 2010, pp. 888–904. |