无煤柱开采中沿空留巷围岩变形规律及控制技术研究

Study on Surrounding Rock Deformation Law and Control Technology of Gob-side Entry Retaining in Coal Pillar-free Mining

通过对无煤开采沿空留巷技术原理的简单阐述,引出底鼓发生的原因,以及底鼓现象对该技术发展的严重制约问题。通过沿空留巷现场实测数据分析巷道底板的变形规律,进而提出底鼓控制技术的基本思路,对促进沿空留巷技术的发展及在煤矿开采中推广应用具有积极的意义。

Through the simple explanation of the technical principle of gob-side entry retaining in coal pillar-free mining,the causes of floor heave and the serious restriction of floor heave on the development of this technology are introduced.The deformation law of roadway floor is analyzed through the field measured data of gob-side entry retaining,and then the basic idea of floor heave control technology is put forward,which has positive significance for promoting the development of gob-side entry retaining technology and its popularization and application in coal mining.