补充勘探孔综合检测手段在复杂地质条件下的运用及分析

Application and Analysis of Comprehensive Detection Means of Additional Exploration Holes under Complex Geological Conditions

工程前期地勘资料是否准确对工程实施阶段具有很大的影响。当地勘资料不能完全指导坝体深孔帷幕灌浆施工技术要求时,需增加相应的地质勘探孔,以便于指导施工。补充地质勘探孔的探测手段除取芯、注水以外,还有灌注砂浆、灌注水泥浆、孔内摄像(孔内电视)、声波测试等综合检测手段。本工程采用上述综合检测手段对补充勘探孔是一次有益的探索,取得了较好的成果,对类似复杂地质条件下的工程施工具有一定的参考价值。

Accuracy of project early stage geological exploration data is very significant in project construction stage. As geological exploration data cannot sufficiently meet requirements of deep hole curtain grouting construction,proper geological exploration holes should be added to guide construction. Detection means of additional exploration holes not only include core drilling and water injection,but also mortar injection,cement grouting,downhole camera( downhole TV) and sonic wave test. The above comprehensive detection means is a beneficial exploration for additional exploration holes and gains remarkable achievements. This experience will give references to the similar projects under complex geological conditions.