1.1 本标准实施规程描述了使用导电土工布和电气方法定位暴露土工膜和覆盖有水或含水分土材料的土工膜中泄漏的标准程序。 1.2 本标准实施规程为在土工膜泄漏位置调查中使用适当的导电土工布提供了指导。本指南包括具有足够导电性的所有类型的导电土工布，用于特定的漏电定位方法。当土工膜下没有导电层时，导电土工布适用于所有类型的地电测量。 1.3 本标准实践旨在确保始终能够以合理的确定性水平进行泄漏位置调查。 本标准实施规程为在土工膜泄漏位置调查中使用适当的导电土工布提供了指导。 1.4 泄漏位置调查可用于安装在水池、池塘、储罐、矿石和废物垫、垃圾填埋场、垃圾填埋盖、其他防护设施以及停车场、甲板和绿色屋顶等建筑应用中的非导电土工膜。该程序适用于由非导电材料制成的土工膜，如聚乙烯、聚丙烯、聚氯乙烯、氯磺化聚乙烯、沥青材料和其他电绝缘材料。涉及导电或部分导电土工膜的泄漏位置调查不在本文件的范围内。 1.5 警告- 用于土工膜泄漏定位的电气方法可能使用高电压，导致触电或触电的可能性。这种危险可能会增加，因为作业可能在水中或附近进行。特别地，在水或接地材料与接地或任何接地导体之间可能存在高电压。这些程序可能非常危险，并可能导致人身伤害或死亡。由于可能涉及高压以及电击或触电危险，除非关闭励磁电源，否则不要与任何泄漏进行电气接触。只有合格且经验丰富的人员才能尝试土工膜泄漏定位的电气方法。 必须采取适当的安全措施来保护泄漏位置操作员以及现场的其他人员。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 随着越来越多地使用土工膜作为屏障材料来限制液体从一个位置迁移到另一个位置，人们需要进行标准化测试，通过这些测试可以评估已安装土工膜的连续性，包括接缝。这种做法旨在满足路基土壤不导电或土工膜安装在不导电材料上时的这种需求。 5.2 使用安装在非导电土壤或材料与土工膜之间的适当导电土工布将允许进行漏电位置调查。 5.3 导电土工布和泄漏定位设备的兼容性应针对所考虑的每种泄漏定位技术（如适用，覆盖或暴露）进行评估。 土工布和/或泄漏检测设备的供应商应进行实际的小规模测试，以证明其对给定泄漏检测技术的相互兼容性。

1.1 This standard practice describes standard procedures for using a conductive geotextile with electrical methods to locate leaks in exposed geomembranes and geomembranes covered with water or earth materials containing moisture. 1.2 This standard practice provides guidance for the use of appropriate conductive geotextile used in leak location surveys on geomembranes. This guide includes all types of conductive geotextiles with sufficient conductivity for the particular electrical leak location method. A conductive geotextile is applicable to all types of geoelectric surveys when there is otherwise not a conductive layer under the geomembrane. 1.3 This standard practice is intended to ensure that leak location surveys can always be performed with a reasonable level of certainty. This standard practice provides guidance for the use of appropriate conductive geotextiles used in leak location surveys on geomembranes. 1.4 Leak location surveys can be used on nonconductive geomembranes installed in basins, ponds, tanks, ore and waste pads, landfill cells, landfill caps, other containment facilities, and building applications such as in parking garages, decks, and green roofs. The procedures are applicable for geomembranes made of nonconductive materials such as polyethylene, polypropylene, polyvinyl chloride, chlorosulfonated polyethylene, bituminous material, and other electrically insulating materials. Leak location surveys involving conductive or partially conductive geomembranes are not within the scope of this document. 1.5 Warning— The electrical methods used for geomembrane leak location could use high voltages, resulting in the potential for electrical shock or electrocution. This hazard might be increased because operations might be conducted in or near water. In particular, a high voltage could exist between the water or earth material and earth ground, or any grounded conductor. These procedures are potentially VERY DANGEROUS, and can result in personal injury or death. Because of the high voltage that could be involved, and the shock or electrocution hazard, do not come in electrical contact with any leak unless the excitation power supply is turned off. The electrical methods used for geomembrane leak location should be attempted only by qualified and experienced personnel. Appropriate safety measures must be taken to protect the leak location operators as well as other people at the site. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 With the increased use of geomembranes as a barrier material to restrict liquid migration from one location to another, a need has been created for standardized tests by which the continuity of the installed geomembrane, including the seams, can be evaluated. This practice is intended to meet such a need whenever the subgrade soil is nonconductive, or a geomembrane is installed on a nonconductive material. 5.2 The use of a suitably conductive geotextile installed between a nonconductive soil or material and the geomembrane will permit electrical leak location survey to be conducted. 5.3 The compatibility of a conductive geotextile and leak location equipment shall be assessed for each leak location technique considered (covered or exposed, when applicable). A realistic small-scale test shall have been conducted by the supplier of geotextile and/or leak detection equipment to demonstrate their mutual compatibility for a given leak detection technique.