Tendency Prediction And Rock Burst HUIZE Dolomite Rock Burst

Rockburst is a common occurrence geologic disaster for deep operations in metal mine.Many countries scholars explain the mechanism of rockburst based on different theories from the rockburst was first discovered to now, but they have failed to form a unified understanding. Because of complicated mining technology conditions for8and10orebody in huize lead-zinc mine,at the same time,with the exploitation of depth, the happening times for rockburst is more frequent and the level of rockburst is more higher.In order to study the tendency of rockburst, dolostone is taken as sample for1308m Level of the deep No.10orebody in huize lead-zinc mine.Physical and mechanical properties of dolostone are determined by experiments and the level of rockburst is predicated by index Kcf and B.Three groups formula about determining level of rockburst by depth and energy formula of rockburst are introduced in this paper.On the basis of the experimental data,the result of determination is got.Analysising and comparing with two group determined results,conclusion is obtained.The content about this paper is the following aspects.The definition of rockburst and research results of predecessors are introduced. What is more,the two most important factors are that engineering excavation depth and rock compressive strength about influencing rockburst are abtained.The tendentiousness of rockburst about dolostone for1308m level of the deep No.10orebody in huize lead-zinc mine is predicted by two rockburst judgement factor,three groups of rockburst depth decision formula and energy formula of rockburst. All of results are existing medium or strong occurrence of rock burst.The regular pattern of acoustic emission determined by experiment. Failure process of sample is descripted by experimental curves and the prediction of rockburst is explained by combining with stress-time of sample.The experimental analysis and theoretical research are made by results of the determination of the rockburst. Combining with stress curve,the occurrence of rockburst is predicted by acoustic emission phenomenon of rock.The experimental analysis and theoretical research are done in this paper so that the basis for prediction of rockburst and the mechanism of rockburst are afforded in future.