防渗土工膜缺陷探测方法述评

针对土工膜防渗工程在各个阶段不可避免的土工膜缺陷问题,在阅读整理国内外相关文献的基础上,介绍适用于不同阶段的土工膜缺陷探测(含质量检测和渗漏监测)方法,重点对各类电学探测方法的优缺点及适用范围进行阐述评价。最后,归纳总结各种缺陷探测方法的适用性,提出若干土工膜缺陷处理技术建议。总结表明:电学法与其他探测方法相比,具有适用性强和精度高等优势,是未来进一步重点发展的土工膜缺陷探测主流方法;电学法若与缺陷处理技术相结合,可形成一套有效的土工膜缺陷预防和处理措施,以提高土工膜防渗体系的完整性。

Review of the defect detecting method of geomembrane for the seepage control

During the different stages of anti-seepage engineering using geomembrane, the defect is almost inevitable. According to many related literatures at home and abroad, the paper introduced some detecting methods of geomembrane defect including the examining and monitoring. In particular, the advantages and disadvantages of various detecting methods and their application scope were analyzed and evaluated in detail. After summarizing the applicability of various detecting methods, the paper lists the various repair technologies of geomembrane defects during the different stages of anti-seepage engineering. The study indicates that, compared with other detecting methods, the electrical method has strong applicability, high accuracy, and easy operation, which will attract more attention and development in the future. The combination of the electrical detecting method and the relevant defect repairing will be helpful for the forming of an effective prevention system of the geomembrane defect and the integrity improvement of geomembrane impervious system.