Application of the strain energy to estimate the rock load in non-squeezing ground condition

• Autorzy: Dehkordi M. S. , Shahriar K. , Maarefvand P. , Gharouninik M.

Warianty tytułu

PL

Zastosowanie energii odkształceń do estymacji obciążenia górotworu w warunkach braku osiadania gruntu

• Języki publikacji: EN

Abstrakty

EN

Estimation of rock load is very important issue because the selection of support system is highly related to this parameter. Several methods are used to estimate this parameter such as experimental, empirical and numerical methods. In this study, a new empirical method is proposed to estimate the rock load based on the ration of the residual strain energy of post failure to the stored strain energy of pre failure. Also a statistical analysis is performed through collected actual data from five tunnels in non squeezing condition. The result showed that there is a direct relationship between both parameters and the good correlation between both parameters is achieved by using of power equation to estimate of rock load in non squeezing condition.

PL

Określenie obciążenia górotworu jest niezwykle ważnym zagadnieniem gdyż warunkuje dobór odpowiedniej obudowy. Istnieje wiele metod określania tego parametru: metody eksperymentalne, empiryczne oraz numeryczne. W pracy tej zaproponowano nową empiryczną metodę prognozowania obciążenia górotworu na podstawie określenia szczątkowej energii odkształceń w warunkach po zniszczeniu w stosunku do zgromadzonej energii odkształcenia przed zniszczeniem. Przeprowadzono analizę statystyczną danych zebranych w pięciu tunelach w warunkach braku osiadania. Wyniki analizy wskazują, że istnieje bezpośredni związek pomiędzy obydwoma parametrami. Dobra korelację pomiędzy dwom parametrami uzyskać można poprzez zastosowanie funkcji potęgowej do określenia obciążeń górotworu w warunkach braku osiadania.

Słowa kluczowe

EN

rock load; strain energy; non-squeezing ground condition; empirical methods

PL

obciążenia górotworu; energia odkształcenia; brak osiadania; metody empiryczne

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2011
• Tom: Vol. 56, no 3
• Strony: 551--566
• Opis fizyczny: Bibliogr. 37 poz., rys., tab., wykr.

Twórcy

autor

Dehkordi M. S.

autor

Shahriar K.

autor

Maarefvand P.

autor

Gharouninik M.

• Islamic Azad University, Department of Mining, Tehran, Iran,

Bibliografia

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