微震多维信息远程解析与冲击地压机制研究  

Remote Analysis of Microseismic Multidimensional Information and the Study on Rockburst Mechanism

作　　者：连鸿全 王桂峰[2] 袁晓园[2] LIAN Hong-quan;WANG Gui-feng;YUAN Xiao-yuan(Heilongjiang Longmay Hegang Mining Limited Liability Company, Hegang,Heilongjiang,154100;State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Xuzhou, Jiangsu,221116)

机构地区：[1]黑龙江龙煤鹤岗矿业有限责任公司,黑龙江鹤岗154100 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《煤炭科技》2019年第5期1-5,共5页Coal Science & Technology Magazine

基　　金：国家重点研发计划（2016YFC0801403、2016YFC0801407）;国家自然科学基金（51504248）;江苏省自然科学基金项目（BK20140194）;江苏省重点研发计划（BE2015040）;江苏高校优势学科建设工程资助项目（SZBF2011-6-B35）

摘　　要：基于矿山微震监测服务系统所记录的微震实时监测信息,从矿震能量和频次、矿震空间分布和能量密度云等方面,分析矿震活动特征及演化规律,对强矿震的孕育规律及冲击地压产生机制进行了探索性的研究。研究表明:微震监测数据表现为时间序列的非线性活动,强矿震和冲击地压发生之前普遍存在孕育过程,并伴随着大量微破裂的产生和能量的释放。矿震活动的空间分布图可以展示矿震的聚集区域,但矿震的空间分布特征异常复杂,很难直观得出矿震空间活动随时间的演变规律。能量密度云呈现出明显的加速扩展特征,表明煤岩体正处于一个破坏集聚的过程,由此可以推断局域应力跃升及能量集中,导致岩体变形局部化诱发裂隙突变产生强矿震的空间历程。矿山微震监测服务系统通过微震的多维信息很好地表征煤岩结构即将失稳的前兆特征,能够从时间上描述冲击危险状态,空间上确定冲击危险区域。Based on the data recorded by Microseismic Monitoring Service(MMS) system, tremor activities were analyzed to study the breeding law of strong tremors and the mechanism of rockbursts. The results demonstrated that microseismic data were nonlinear in time series. There were usually breeding processes before strong tremors and rockbursts, accompanied by a large number of micro-fractures and energy release. The microseismic spatial distribution map can show the accumulation area of tremors. However, the spatial distribution characteristics of mining-induced tremors were very complex, so it was difficult to obtain the evolution law of the spatial activity of tremors with time. The energy density clouds showed an obvious acceleration feature. This indicated that the coal-rock masses was in a development process of destruction. Then the spatial breeding process of strong tremors could be deduced in which the local stress jump and energy concentration led to the localization of rock mass, fractures subsequently mutated and strong tremors occurred. MMS system could well characterize the instability precursory of coal-rock masses through multi-dimensional microseismic information. It could describe the rockburst danger state from time and determine the dangerous area in space.

关 键 词：微震监测 矿震 冲击地压 机制 

分 类 号：TD324[矿业工程—矿井建设]