注浆加固技术在防治陷落柱奥灰突水中的应用

Application of grouting reinforcement technology in water inrush prevention of collapse column

东坡煤矿在注浆工程中,通过设计合适的止水塞厚度、浆液扩散半径及陷落柱密实度分析、边坡角的确定,实现巷道底板的有效加固。注浆前后效果对比明显,注浆后物探报告显示异常区域变小,异常区域阻值增大,达到预期效果。

By analyzing the grouting diffusion radius and density of collapse column,the blocklet thickness is design and slope angle is determined. The grouting engineering in Dongpo mine shows that the abnormal area reduced and the resistance of abnormal area increased after grouting. The roadway floor is reinforced effectively and the desired effect is achieved.