Stability and structural dimension of access mechanized panel^①

来源期刊：中南大学学报(英文版)2005年第1期

论文作者：罗一忠 吴爱祥 王洪江 刘湘平

文章页码：73 - 77

Key words：mechanized panel; stability; stoping sequence; structural dimension; elasto-plastic finite element; energy release rate

Abstract: To acquire a knowledge of the stress-strain state in the process of mining beforehand, a numerical method was used to simulate the stoping process of access mechanized panel mining in No. 3 ore-body of Tonglushan mine; and for the sake of obtaining better stability, the optimal panel dimension and access stoping sequence were researched. The results show that the integral stability of the mechanized panel of No. 3 ore-body is passable in the process of winning at full level height; the stability of panel tends to be worse gradually with continuous increasing of panel width; and the better width of access panel in No.3 ore-body is less than 52 m. It is indicated that 3D elasto-plastic finite element method can make a satisfactory study of numerical simulation on the panel stability and its structural dimension in the test for the upward access mechanized-panel mining. The results of the theoretical calculation and analysis accord with the actual situation from the field ground pressure monitoring.