全面留矿法采场顶板支护和落矿爆破工艺的研究

Study of roof support and ore blasting in the stope where the breasting-shrinkage method is employed

本文介绍的接杆锚杆护顶技术和上向眼大孔距多排微差爆破落矿技术，解决了送昌金矿全面留矿法采矿工艺中存在的采场顶盘围岩大面积冒落和采场落矿爆破效果差、效率低这两个主要问题。

Technology of roof support with connected bolt and the employment of multirow of upward and broad spaced holes for slight time-differenceblasting are introduced in this paper,through which the problems of roof andcountry rock fall in big way and the poor efficiency and effectivsness of oreblasting in the stope of Sui-Chang Gold Mine are solved in the application ofbreasting-shrinkage method.