三维可加载条件下工作面围岩局部变形规律 .pdfVIP

学兔兔 2010年第2期 煤 炭 工 程 三维可加载条件下工作面围岩局部变形规律 郭秉超 ，张 坤 ，曹建涛 ， (1．神华新疆能源有限责任公司，新疆乌鲁木齐 830027；2．西安科技大学能源学院，陕西西安 710054； 3．西安科技大学教育部西部矿井开采及灾害防治重点实验室，陕西西安 710054) 摘 要：以苇湖梁煤矿+579E2EB…急倾斜特厚综放开采工作面为典型物理原型，系统的 进行大型三维立体相似模拟实验，同时利用数字化声发射技术(acoustic emission，AE)对局部化 过程中的动态力学响应参数及其与之对应的微结构演化过程进行实时追踪，从宏观与微观角度揭 示不同开采条件下煤岩复合围岩介质局部化变形一演化一失稳规律，为开采扰动区衍生动力学灾 变行为预报和控制研究提供线索。 关键词：大型三维立体相似模拟实验；声发射；局部化变形损伤 中图分类号：TD322 ．4 文献标识码：B 文章编号：1671—0959(2010)02-0081-04 Local deformation law of surrounding rocks in coal mining face under 3 D loaded conditions GUO Bing—chao ．ZHANG Kun ．-．CAO Jian—tao ， (1．Shenhua Xinjiang Energy Ltd．，Wulumuqi 830027，China； 2．School of Energy and Resources，Xi an University of Science and Technology ，Xi an 710054，China； 3．Ministry of Education Key Lab of Westem Mining and Disaster Prevention，Xi an University of Science and Technology，Xi an 710054，China) Abstract：Abstract：Base on the+579E2EBl+2 fully mechanized top coal caving mining face in steep inclined ultra thick seam as a typical physical model，a large 3D similar simulation experiment was systematically conducted．Also the digital acoustic emission technology was applied to a real—time tracing on the dynamic mechanics response parameters during the localization procedure and the related micro structure evolution procedure．From the macro and micro points，the local deformation ——evolution —-instability law of the coal and rock complex surrounding rock medium was revealed under the different mining forward conditions，which could provide the clues for the predict