CORRELATION BETWEEN SLAKE DURABILITY INDICES AND STRENGTH OF COAL FROM KARAGANDA COAL BASIN

Abstract

The uniaxial compressive strength is a very important parameter in mine design. For weak rocks such as coal, it is particularly difficult to obtain cores for mechanical testing. Especially for the weak rocks, another possibility of obtaining strength can be slake durability test (SDT) that is quick and inexpensive. A laboratory testing project was designed and carried out to characterize some physical (porosity and bulk density) and mechanical properties (UCS and PLI) and also slake durability indices (SDI)....