... ABSTRACT: Steady-state creep is increasingly used to model structures hosted in salt and potash. This is presumably due to the absence of representative constitutive models available in commercial geomechanics software. We consider a standard suite of tests performed on salt. These include...

... ABSTRACT: A combination of field monitoring, Close Range Photogrammetry (CRP) and 3-dimensional numerical modeling is used in an underground potash mine to study the closure rates in the main panel as well as in large underground storage areas. The main interest is to predict the closure rate...

... ABSTRACT: The time dependent characteristics of acoustic emission during creep tests on potash have received little attention. In this paper the results of uniaxial creep to failure tests on potash samples with acoustic emission monitoring are described. Results indicate a characteristic "U...

... ABSTRACT INTRODUCTION The Potash Corporation of Saskatchewan Mining Ltd. is the operator of four potash mines in Saskatchewan, Canada. These divisions mine the ore sylvinite, at horizons within the Prairie Evaporite formation. Fuzesy, (1982). The depth of the mining operations at all...

... ABSTRACT INTRODUCTION In 1982 and 1983, as part of the mine design program for a New Brunswick potash mine, series of laboratory tests were conducted on potash and salt samples obtained during the mine exploration program. Concurrently, two rock mechanics monitoring programs were initiated...

... ABSTRACT This chapter presents a successful approach for achieving mine entry stability at the Cane Creek potash mine by the utilization of closure measurements. The mine is located in southeastern Utah (Fig. 1). Mining is being conducted at depths in excess of 3000 ft under structurally...

... elastic 1, although the assumption of elastic behavior remains valid enough for most practical purposes. Some rocks, however, notably rock salt and potash, are so anelastic that most of the previously accepted principles of rock behavior must be completely disregarded. This paper describes part of a rock...

... intact and support the structure indefinitely; in operations involving induced caving, the pillars are generally reduced to a size such that they will crush and fail at some predetermined rate; and in some incompetent rock, especially in salt and potash mines, the pillars usually undergo continuous...