【摘要】 占我国地下开采 1 / 3以上出矿量的浅孔留矿法 ,经过几十年的不断完善和发展 ,不但采用了多种新技术 ,而且也发明与应用了适用不同开采技术条件的新工艺。在此略作介绍并加以评述更多还原

【Abstract】 Shallow hole shrinkage stoping is over 1/3 onunderground mining outmine, through the umpty year unceasingly parfection and development, it adopted many new technology and invented or applied new technique at variant mining technology. To that, this paper summarily introduced and enpounded it.更多还原