- Tytuł:
- Open pit slope stability analysis in soft rock formations at Thar Coalfield Pakistan
- Autorzy:
-
Pathan, Shafi Muhammad
Pathan, Abdul Ghani
Siddiqui, Fahad Irfan
Memon, Muhammad Burhan
Soomro, Mairaj Hyder Alias Aamir - Powiązania:
- https://bibliotekanauki.pl/articles/2203337.pdf
- Data publikacji:
- 2022
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
szyb górniczy
skała osadowa
modelowanie komputerowe
open pit slope stability
overall slope angle
Thar Coalfield
computer modelling - Opis:
- Slope Stability Analysis is one of the main aspects of Open-pit mine planning because the calculations regarding the stability of slopes are necessary to assess the stability of the open pit slopes together with the financial feasibility of the mining operations. This study was conducted to analyse the effect of groundwater on the shear strength properties of soft rock formations and determine the optimum overall slope angle for an open pit coal mine at Thar Coalfield, Pakistan. Computer modelling and analysis of the slope models were performed using Slide (v. 5.0) and Phase2 (v. 6.0) software. Integrated use of Limit Equilibrium based Probabilistic (LE-P) analysis and Finite Element Method (FEM) based shear strength reduction analysis was performed to determine the safe overall slope angle against circular failure. Several pit slope models were developed at different overall slope angles and pore-water pressure ratio (Ru) coefficients. Each model was initially analysed under dry conditions and then by incorporating the effect of pore-water pressure coefficients of Ru = 0.1, 0.2, and 0.3 (partially saturated); finally, the strata were considered to be fully saturated. It was concluded that at an overall slope angle of 29 degrees, the overall slope will remain stable under dry and saturated conditions for a critical safety factor of 1.3.
- Źródło:
-
Archives of Mining Sciences; 2022, 67, 3; 437--454
0860-7001 - Pojawia się w:
- Archives of Mining Sciences
- Dostawca treści:
- Biblioteka Nauki
Artykuł