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采用高密度电法对交河故城崖壁裂隙灌浆前后的电阻率进行了对比探测,通过电性分析,提出了灌浆效果的评价方法。对比分析结果显示,灌浆前裂隙表现为极高阻,灌浆后裂隙电阻率为凝固浆液与周边土体的综合反应,裂隙越小,越接近土体,裂隙越大,越接近凝固浆液。总体结果显示,交河古城崖壁灌浆效果较好,浆液充填饱满,灌浆后不存在裂缝或孔洞。
Using high density electric method, the resistivity before and after grouting in the cliffs of Jiahe Old City was compared and detected. Based on the electrical analysis, the method of evaluating the grouting effect was put forward. The results of comparative analysis show that the fractures before grouting show extremely high resistance, and the resistivity of fractures after grouting is the comprehensive response of the grout and the surrounding soil. The smaller the fractures, the closer to the soil. The larger the fractures, the closer to the coagulation slurry. The overall results show that the Cross River wall grouting effect is better, full of slurry filling, there is no cracks or holes after grouting.