{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,25]],"date-time":"2026-10-25T13:45:03Z","timestamp":1792935903307,"version":"4.5.0"},"reference-count":16,"publisher":"EDP Sciences","license":[{"start":{"date-parts":[[2018,1,31]],"date-time":"2018-01-31T00:00:00Z","timestamp":1517356800000},"content-version":"vor","delay-in-days":30,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["E3S Web Conf."],"published-print":{"date-parts":[[2018]]},"abstract":"<jats:p>A powered roof support is a machine responsible for protection of an underground excavation against deformation generated by rock mass. In the case of dynamic impact of rock mass, the proper level of protection is hard to achieve. Therefore, the units of the roof support and its components are subject to detailed tests aimed at acquiring greater reliability, efficiency and efficacy. In the course of such test, however, it is not always possible to foresee values of load that may occur in actual conditions. The article presents a case of a dynamic load impacting the powered roof support during a high-energy tremor in an underground hard coal mine. The authors discuss the method for selecting powered roof support units proper for specific forecasted load conditions. The method takes into account the construction of the support and mining and geological conditions of an excavation. Moreover, the paper includes tests carried out on hydraulic legs and yield valves which were responsible for additional yielding of the support. Real loads impacting the support unit during tremors are analysed. The results indicated that the real registered values of the load were significantly greater than the forecasted values. The analysis results of roof support operation during dynamic impact generated by the rock mass (real life conditions) prompted the authors to develop a set of recommendations for manufacturers and users of powered roof supports. These include, inter alia, the need for innovative solutions for testing hydraulic section systems.<\/jats:p>","DOI":"10.1051\/e3sconf\/20182900006","type":"journal-article","created":{"date-parts":[[2018,1,31]],"date-time":"2018-01-31T08:49:12Z","timestamp":1517388552000},"page":"00006","source":"Crossref","is-referenced-by-count":17,"title":["Analysis of rock mass dynamic impact influence on the operation of a powered roof support control system"],"prefix":"10.1051","volume":"29","author":[{"given":"Dawid","family":"Szurgacz","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jaro\u0142aw","family":"Brodny","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"250","published-online":{"date-parts":[[2018,1,31]]},"reference":[{"key":"R1","unstructured":"Paty\u0144ska R., Zagro\u017cenia t\u0105paniami (2008 \u2013 2017). Raport roczny o stanie zagro\u017ce\u0144 naturalnych i technicznych w g\u00f3rnictwie w\u0119gla kamiennego, The Central Mining Institute, Katowice (2017)"},{"key":"R2","unstructured":"Prusek S., Rajwa S., Walentek A., Masny W., 3rd International Symposium on Mine Safety Science and Engineering, Paper No. 148, Montreal (2016)"},{"key":"R3","doi-asserted-by":"crossref","unstructured":"Prusek S., Rajwa S., Wrana A., Krzemien A., International Journal of Mining, Reclamation and Environment 31\/8 (2017)","DOI":"10.1080\/17480930.2016.1200897"},{"key":"R4","doi-asserted-by":"crossref","unstructured":"Prusek S., P\u0142onka M., Walentek A., Arabian Journal of Geosciences 3\/9 (2016)","DOI":"10.1007\/s12517-015-2171-2"},{"key":"R5","unstructured":"Bilinski A., Prace Naukowe \u2013 Monografie CMG KOMAG, Gliwice (2005)"},{"key":"R6","unstructured":"Prusek S., Stability of longwall workings during the operation of coal deposits based on cave mining (in Polish), The Central Mining Institute, Katowice (2016)"},{"key":"R7","unstructured":"Szurgacz D., Polsk\u00e9 hornictvi v sou\u00e8astn\u00e9 dobi, VIII. Mezin\u00e1rodni konferencje, Strojni za\u0159izeni pou\u017eivan\u00e1 p\u0159i hornick\u00e9 \u010dinnosti a \u010dinnosti prov\u00e1d\u011bn\u00e9 hornick\u00fdm zp\u016fsobem, jejich bezpe\u010dnost a nov\u00e9 trendy \u010d. 101, 27-28.4.2017 v Ostravici (2017)"},{"key":"R8","unstructured":"Szurgacz D., Wiadomo\u015bci G\u00f3rnicze 10 (2011)"},{"key":"R9","unstructured":"Stoi\u0144sk K., Gil J., XXII International Conference TEMAG 2014, Gliwice \u2013 Ustro\u0144 249-255 (2014)"},{"key":"R10","first-page":"303","volume":"56\/2","author":"Brodny","year":"2011","journal-title":"Archives of Mining Sciences"},{"key":"R11","doi-asserted-by":"crossref","first-page":"209","DOI":"10.2478\/v10267-012-0015-4","volume":"57\/1","author":"Brodny","year":"2012","journal-title":"Archives of Mining Sciences"},{"key":"R12","first-page":"383","volume":"2017","author":"Tutak","year":"2017","journal-title":"Proceedings of the 22nd International Scientific Conference"},{"key":"R13","unstructured":"Stoi\u0144ski K., Nap\u0119d i Sterowanie 7\/6 (2006)"},{"key":"R14","unstructured":"Doleg\u0142o L., Gil J., Stoi\u0144ski K., Maszyny G\u00f3rnicze 4 (2009)"},{"key":"R15","first-page":"171","volume":"22\/2","author":"Szurgacz","year":"2015","journal-title":"Mining Science"},{"key":"R16","unstructured":"GIG Test Report no. 57205506-182. Technical test of a hydraulic leg type 320\/305\/250\/230x1351, applied to a KHW-12\/28 POz roof support with a support system (DOH DN12 valve block type 2010 0312 0502 with a SP10.C valve, and a DOH valve type 2020 2020 0345 1000) (2015)"}],"container-title":["E3S Web of Conferences"],"original-title":[],"link":[{"URL":"https:\/\/www.e3s-conferences.org\/10.1051\/e3sconf\/20182900006\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,3,13]],"date-time":"2020-03-13T15:21:57Z","timestamp":1584112917000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.e3s-conferences.org\/10.1051\/e3sconf\/20182900006"}},"subtitle":[],"editor":[{"given":"T.A.","family":"Przylibski","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"editor"}]},{"given":"D.","family":"Kasza","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"editor"}]}],"short-title":[],"issued":{"date-parts":[[2018]]},"references-count":16,"alternative-id":["e3sconf_cpsys2018_00006"],"URL":"https:\/\/doi.org\/10.1051\/e3sconf\/20182900006","relation":{},"ISSN":["2267-1242"],"issn-type":[{"value":"2267-1242","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018]]}}}