某煤矿210工作面底板注浆加固技术的实践应用

Practical Application of Grouting Reinforcement Technology for Bottom Slab of 210 Working Face in a Coal Mine

为了确保工作面的安全生产,某煤矿采取底板注浆加固的方法对210工作面底板太原组灰岩进行全层全覆盖的注浆,将底板太原组灰岩含水层改造为隔水层,从而将底板突水危险性系数降低到安全值以内,实现了工作面安全回采。

In order to ensure the safe production of the working face, a coal mine adopted the method of grouting rein- foreement on the floor of 210 working faee Taiyuan Formation limestone full-eoverage grouting, the floor of Taiyuan formation limestone aquifer was transfomled into a water-proof layer, thus redueing the risk faetor of water inrush from the floor to a safe value, and realizing the safe mining of the working faee.