采动诱发煤与瓦斯突出渗流-应力-损伤机理与预报指标研究

项目名称： 采动诱发煤与瓦斯突出渗流-应力-损伤机理与预报指标研究

项目编号： No.51304235

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 矿业工程

项目作者： 王根霞

作者单位： 山东科技大学

项目金额： 25万元

中文摘要： 本项目以煤炭开采过程中瓦斯运移及灾变的动力学机制为研究主线，以瓦斯灾害机理及预防基础为研究重点，以采动诱发煤与瓦斯突出渗流-应力-损伤机理与预报指标为研究目标，采用理论分析、现场测试、实验室实验和数值模拟等多种方法，对采动裂隙场演化、瓦斯在采动裂隙带的聚集规律以及采动裂隙场的时空分布与瓦斯流动场耦合规律研究；运用现代微震监测技术，对含瓦斯煤岩体在不同状况下的破裂过程中微震分布特征进行研究，确定有效的微震信息和预测方法。在此基础上，对软分层、区域构造煤及断层对瓦斯突出微震前兆特征的影响进行分析，揭示煤与瓦斯突出动力灾害孕育过程中的微震活动时空演化与响应规律，并建立采动煤岩体渗流-应力-损伤耦合模型，实现数值模拟，探寻煤与瓦斯突出动力灾害的微震前兆信息和失稳模式，为建立快速预报模型提供理论依据。

中文关键词： 煤与瓦斯突出；预报指标；层次分析法；；

英文摘要： This project regards methane migration and cataclysmic kinetics mechanisms in the process of coal mining as the leading line of the research, considers mechanisms of methane disasters and prevention base as the key point of the research and treats the percolation-stress-damage mechanism of coal and methane outburst caused by mining and forecasting indicators as the target of the research. Meanwhile, it uses several methods like theoretical analyses, site tests, laboratory experiments and numerical simulation to study the evolution of mining fracture field, the aggregation law of methane at the mining fracture region, the spatial and temporal distribution of the mining fracture field and the coupling law of methane migration filed. In addition, it adopts modern micro-seismic monitoring to study micro-seismic characteristics in the fracture process of coal and rock mass containing methane under different conditions and determine effective micro-seismic information and prediction technique. Based on this, it analyzes the impacts of soft stratification, regional structure coal and fault on the micro-seismic premonition and features of methane outburst, reveals spatial-temporal evolution and response laws when micro-seismic activities happen in the process in which dynamic disasters of coal and gas outburst are bred,

英文关键词： coal and gas outburst；forecast indicators；AHP；；