中文摘要：

针对厚大、缓倾斜、顶板基本稳定的磷矿床,在使用房柱法开采过程中顶板容易跨冒的特点,本文探索性地提出了设置电耙底部结构、溜井振动放矿的房柱采矿方法.通过这些改进,将可以避免人员直接在较大的暴露空场下作业,减少安全事故的发生,同时盘区生产能力和回收率可以得到较大幅度的提高,电耙和窄轨电机车运输系统等常规设备的大量使用可以节省投资.

英文摘要：

Gentle slope and big phosphate deposit with stable roof is mined by way of room and pillar, the roof cocrupt ocuurs easily, room and pillar mining is presented with the bottom of electric scraper and vibro-drawing of drop shaft. With these improvements, it is avoided that worker is direct in the larger void field, which it also can reduce security incidents, while panel production capacity and recovery rate can be increased largely, A lot of investment can be saved due to using electric scraper and narrow-gauge electric locomotive transport system.