摘要
古构造应力场对芙蓉矿区煤与瓦斯突出起主控作用。本文采用煤镜质体有限应变分析、Ｅｔｃｈｅｃｏｐａｒ电算、共轭剪节理解析以及有限元模拟等方法对其作了定量化研究。结果表明：矿区现存构造是在最大主压应力方向分别为１９４°∠２３°和１４５°∠２９°的两期应力场作用下产生的，对应构造差应力分别为２１ＭＰａ和２３ＭＰａ，使全区各级构造呈北东向和东西向为主的复合叠加规律。这些不同构造型式对矿区煤层气赋存及煤与瓦斯突出具有不同的控制方式。
he palaeotectonic stress field is the main factor to control coal and gas outburst in Furong mining area. Taken the methods of finite stress analysis of vitrinite reflectance, Etchecopar computer calculation, analysis of conjuated shear stress and numerical simulation, the palaeotectonic stress field was quantitatively studied by the paper. It indicated the structures were respectively formed by the stress field with the direction of 190°23°and 145°29°, the strengy of 21MPa and 23MPa. These made the structures in different scales stacked in the direction of EW and NE. It provided the theorical basis for the prediction of coal and gas outburst.
出处
《地质科学》
CAS
CSCD
北大核心
1995年第1期71-84,共14页
Chinese Journal of Geology(Scientia Geologica Sinica)
关键词
芙蓉矿区
古构造应力场
瓦斯突出
煤突出
控制
Furong mining area, Palaeotectonic stress field, Compounding of structures coal, Gas outburst
