某深井矿山岩爆特征及形成机理研究

地应力、构造发育。对矿山地质条件进行了阐述，通过现场调查，描述了岩芯饼化和围岩剥落现象，分析了岩爆特征，总结了发生岩爆的基本规律，对8#矿体进行了岩爆类型和岩爆烈度分级划分，得出了该矿体围岩从1 451 m中段至1 261 m中段具有中等至强烈岩爆倾向性，从原岩应力、地质构造及开采深度等岩爆影响因素分析了岩爆发生的成因和形成机理，为选择合理的采矿方法和岩爆控制技术措施提供了重要依据。

Study on the Rockbust Mechanism and Characteristics in a Deep Mine

Huize Lead &; Zinc Mine of Yunnan Chihong Zn &; Ge Co., Ltd is a one thousand meter-deep mine. The main problems in the mining of this hard-rock deposit include high ground stress and developed fault structure. The paper describes the mine geological conditions and the rock core caking and wall rock spalling observed in the field investigation, analyzes the rockburst characteristics, summarizes the basic law of rockburst occurrence and classifies the rockburst type and intensity of No. 8 orebody. It is concluded that the wall rock of this orebody between 1 451 m level to 1 261 m level has medium to strong trend of rockburst. The causes and mechanism of rockburst are analyzed from the initial rock stress, geological structure and mining depth, hereby providing an important basis for choosing the rational mining method and the technical measures for controlling the rockburst.