顶板淋水主斜井预应力注浆锚索堵水支护加固试验

Experiment of water plugging and supporting reinforcement with prestressed grouting anchor cable in main inclined shaft with dripping roof

针对古城矿主斜井顶板锚索孔导通裂隙水,导致顶板淋水严重,通过对主斜井淋水段实地钻孔探放水,分析了顶板含水层分布及淋水规律,设计了适合该工程状况的注浆锚索支护方案及注浆参数,并在现场进行注浆试验,进而推广到主斜井淋水段支护中。矿压观测结果表明,注浆锚索堵水加固支护在古城矿主斜井淋水段取得了成功。

The anchor cable holes unblocked fissure water in roof of main inclined shaft in Gucheng Mine, which lead to serious roof dripping, aquifer distribution and water dripping law in roof were analyzed through drilling and water exploration in the dripping zone of main inclined shaft, the suitable grouting anchor cable supporting scheme and grouting parameters were designed, and grouting tests were carried out on site, which had been generalized to the supporting of the dripping zone of main inclined shaft. Observation results of rock pressure showed that water plugging and supporting reinforcement with prestressed grouting anchor cable had succeeded in the dripping zone of main inclined shaft in Gucheng Mine.