STUDY ON THE FORM OF BLASTED DOWN BLOCK AND ITS IMPACT

With an eye to the problems facing Sublevel Caving Method Without Sill Pillar,this paper proposes the definition of caved are body,derives the form of caved ore body,analyzes the mian factors influencing the form of caved ore body,expatiates the relationship among drawn-out ore body,loosened ore body and caved ore body and studies the impact of the form of caved ore body on ore drawing.The paper is of important instructive importance to reduce loss and depletion by sublevel caving method without sill pillar.