水泥土注浆在路基下伏稀土采空区处理中的应用

摘要

The geological disasters caused by rare earth mined-out area have serious endangerment for the construction and operation of highway. Aiming at a specific gob subgrade strengthening projects , and combining with the geological conditions and engineering requirements , a method of cement-soil grouting reinforcement is put forward and applied to practical engineering. Test results show that good grouting effect is achieved with the slurry filling the mined-out area and consolidating the soil well and the soil mass stability being improved to meet the specification requirement. Therefore , the method of cement-soil grouting has good feasibility and applicability for the reinforcement of the rare earth mined-out area.%稀土采空区引发的地质灾害对公路的建设和运营具有严重的危害。针对某一具体的稀土采空区路基加固治理工程，结合地质条件及工程要求，提出了一种水泥土注浆加固方法，应用于实际工程。检测结果表明：浆液较好地填充了稀土采空区，有效地固结了土体，提高了土体稳定性，满足规范要求，取得了良好的注浆效果。因此，水泥土注浆方法对稀土采空区加固治理具有良好的可行性和适用性。