综放开采采动裂隙分布及其演化特征分析  

Distribution of Mining Fissures Induced by Fully Mechanized Caving Mining and Analysis on Their Evolvement Characteristics

作　　者：杨科[1] 谢广祥[1] 

机构地区：[1]安徽理工大学煤矿安全高效开采教育部重点实验室,安徽淮南232001

出　　处：《矿业安全与环保》2009年第4期1-3,共3页Mining Safety & Environmental Protection

基　　金：安徽省优秀青年基金项目(08040106839);国家重点基础研究发展计划(973计划)项目(2005CB221503);安徽高等学校省级自然科学研究项目(KJ2009A139)

摘　　要：基于非对称综放开采布置特点,以谢桥煤矿1151(3)综放工作面地质及技术条件为背景,采用现场实测、实验室相似材料模拟和计算机数值模拟综合分析方法,开展了综放开采采动裂隙分布及其演化特征研究。结果表明,随工作面推进,采动裂隙发育高度呈梯级跃升并趋于稳定,其演化具有"∩"形高帽状、前低后高驼峰状、前后基本持平驼峰状、前高后低驼峰状等4阶段特征,非对称开采采动裂隙分布呈非对称性,揭示出非对称综放开采采动裂隙分布规律及其演化特征。该研究可为采场围岩稳定性控制、瓦斯抽放、安全高效开采等提供理论依据。Based on the characteristics of non-symmetric fully-mechanized caving mining, taking the geologic conditions of 1151 (3) fully-mechanized caving face in Xieqiao Coalmine as background and adopting the comprehensive analysis of actual measurement at the site, the similar material simulation in the lab and the numerical simulation by computer, study was made on the distribution and evolvement characteristics of mining fissures induced by fully mechanized caving mining. The results showed that the development height of mining fissures went up step by step and trended to stability, its evolvement presented four-stage characteristics including a tall'∩ 'hat shape, a hump shape low in front and high at the back, a hump shape basically keeping fair in front and behind and a hump shape high in front and low at the back, and the distribution of non-symmetric mining fissures assumed non-symmetry, which revealed the distribution law and evolvement characteristics of non -symmetric mining fissures induced by fully mechanized caving mining. This study provided theoretical basis for the control of surrounding rock stability, the gas drainage and the safe and efficient mining.

关 键 词：综放开采 非对称布置 采动裂隙 演化特征 

分 类 号：TD32[矿业工程—矿井建设]