International journal of mining, reclamation and environment
Paginering:
Jaargang 1 (1987) nr. 1 pagina's 13-20
Jaar:
1987
Inhoud:
Geotechnical technology for surface mining has become increasingly sophisticated as lower grade ore deposits are being developed. With larger and deeper open pits, more detailed and accurate investigation has become necessary during the past decade. Many variables influence successful open pit operations. These include ore grade, metal price, development costs, construction costs, mine design, stability and operating costs. With the great increase in the size of open pits to depths over 600 ∼ 800 meters, the determination of pit slope angle and control of wall stability has a major influence on project economics. This paper briefly discusses preliminary considerations for pit slopes from a geotechnical standpoint to optimize economics and safety, describes recent developments in stability engineering and to illustrate a wide range of stability problems, typical examples are briefly reviewed.
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