Możliwość eksploatacji górniczej w filarze ochronnym szybów w świetle sposobu oceny zdolności odkształceniowej ich obudowy i obliczeń deformacji górotworu
cytuj
pobierz pliki
RIS BIB ENDNOTEWybierz format
RIS BIB ENDNOTEProspects of mining operations in shaft protection pillars in terms of the assessment method of strain efficiency of their lining and calculations of rock mass deformation
Data publikacji: 19.12.2019
Geoinformatica Polonica, 2019, Vol. 18 (2019), s. 145 - 155
https://doi.org/10.4467/21995923GP.19.012.11579Autorzy
Prospects of mining operations in shaft protection pillars in terms of the assessment method of strain efficiency of their lining and calculations of rock mass deformation
The assessment involving the prospects of mining exploitation, in particular with the disruption of protective pillars, is frequently a fundamental issue in the engineering practice. It is even more important when the problem involves the completed mining exploitation which was carried out for many years and which already brought about stress-strain changes in the protected objects whose technical condition should ensure safety of use.
The impact of mining exploitation on rock mass and surface ground can be most reliably determined basing on the results of geodetic surveys, but in practice, in the conditions where mining exploitation was carried out for many years, the results of geodetic surveys with the records of deformations that occurred in such areas are not available. Then, to assess the impact of mining operations carried out so far, we can only apply the available partial results of geodetic surveys. It happens in situations when we are to assess the prospects of mining exploitation, especially with the disruption of the protective pillar of mining shafts, which are of fundamental importance for mining operations.
The article presents an exemplary assessment involving the prospects of mining exploitation with roof fall in the protective pillar of shafts in terms of the results of the reprognosis involving the impact of completed mining exploitation on the surface ground and rock mass.
The methodology used to assess the prospects of further mining exploitation in the vicinity of the protective pillar of main shafts takes into account the fact that in view of the reprognosis results, years-long mining exploitation carried out to the boundaries of the protective pillar resulted in relatively large horizontal displacements around the area of the shafts, and smaller vertical displacements. In such circumstances, the latest surveys of horizontal displacements were used to infer about the current curvature of the vertical axis of shaft No.1, located closest to the plots of the completed mining. The calculation involving the possibility to carry out further mining operations within the impact range on the protected shafts No.1 and No.2 was determined by comparing the calculated permissible curvature radius of the shaft axis, reflecting the strain efficiency of the lining, with the calculated curvature radius of the vertical axis of the shaft lining effected by horizontal displacements of rock mass.
[1] Białek J.: Algorytmy i programy komputerowe do prognozowania deformacji terenu górniczego. Wydawnictwo Politechniki Śląskiej, Gliwice, 2003.
[2] Borecki M., Chudek M., Podgórski K., Straś J., Szczepaniak Z.: Współpraca nieupodatnionej obudowy szybu z górotworem poddanym wpływom eksploatacji górniczej. ZN Pol. Śl., s. Górnictwo z. 85, Gliwice, 1977, str. 29–36.
[3] Chudek M., Olaszowski W., Drzęźla B.: Obliczanie deformacji szybu pod wpływem eksploatacji. ZN Pol. Śl., s. Górnictwo z. 48, Gliwice, 1971, str. 123–134.
[4] Drzęźla B.: Poziome deformacje górotworu przy eksploatacji górniczej. ZN Pol. Śl., s. Górnictwo z. 44, Gliwice, 1971, str. 25–40.
[5] Hao Yan, Jixiong Zhang, Sheng Zhang, Nan Zhou: Physical modeling of the controlled shaft deformation law during the solid backfill mining of ultra-close coal seams. Bulletin of Engineering Geology and the Environment https://doi.org/10.1007/s10064-018-1335-1.
[6] HUANG Pinglua, CHEN Congxina, XIAO Guofen: Feasibility Analysis on Using Shaft in the Region with Large Deformation. First International Symposium on Mine Safety Science and Engineering. www.sciencedirect.com Procedia Engineering 26 (2011) 1726–1730.
[7] Kleta H.: Zasady oceny bezpieczeństwa szybów i ich odporność na oddziaływania górnicze. Monografia, wyd. Politechniki Śląskiej, Gliwice, 2013.
[8] Mielimąka R.: Wpływ kolejności i kierunku eksploatacji prowadzonej frontami ścianowymi na deformacje terenu górniczego. Monografia, wyd. Politechniki Śląskiej, Gliwice, 2009.
[9] Praca zbiorowa: Ochrona powierzchni przed szkodami górniczymi. Wyd. Śląsk, Katowice, 1980.
[10] Qing Yu, Hideki Shimada, Takashi Sasaoka, Kikuo Matsui: Impact of Underground Mining on Shaft Lining and Aquifer in Eastern China. Open Journal of Geology, 2012, 2, 158–164 http://dx.doi.org/10.4236/ojg.2012.23016 Published Online July 2012.
[11] Zych J., Strzałkowski P.: Przemieszczenia i deformacje występujące w szybach pod wpływem eksploatacji górniczej. Metody i środki eksploatacji na dużych głębokościach (Wybrane zagadnienia). Wyd. Pol. Śl., Gliwice, 1987, str. 243–262.
[12] Xianzhou Lyu, Weiming Wang: Deformation Monitoring and Stability Analysis of Shaft Lining in Weakly Cemented Stratum. Advances in Civil Engineering Volume 2018, Article ID 8462746, 12 pages https://doi.org/10.1155/2018/8462746.
Informacje: Geoinformatica Polonica, 2019, Vol. 18 (2019), s. 145 - 155
Typ artykułu: Oryginalny artykuł naukowy
Tytuły:
Prospects of mining operations in shaft protection pillars in terms of the assessment method of strain efficiency of their lining and calculations of rock mass deformation
Możliwość eksploatacji górniczej w filarze ochronnym szybów w świetle sposobu oceny zdolności odkształceniowej ich obudowy i obliczeń deformacji górotworu
Faculty of Mining, Safety Engineering and Industrial Automation Silesian University of Technology in Gliwice
Faculty of Mining, Safety Engineering and Industrial Automation Silesian University of Technology in Gliwice
Publikacja: 19.12.2019
Status artykułu: Otwarte
Licencja: CC BY-NC-ND
Udział procentowy autorów:
Korekty artykułu:
-Języki publikacji:
AngielskiLiczba wyświetleń: 878
Liczba pobrań: 1083