1.1 本规程适用于岩土工程和水利工程系统密封中由聚合物材料制成的土工膜衬垫的热楔焊接。 1.2 焊接设备可以包括热楔或热空气楔焊机。 1.3 在这一实践中，目的是提供有关影响土工膜焊缝质量和耐久性的因素的信息，并深入了解这些因素的重要性。本标准涵盖所有可焊接热塑性土工膜，包括增强材料。 1.4 挤压焊接以及沥青和非热塑性土工膜的焊接不包括在内。 1.5 只能由具备聚合物土工膜焊接能力的操作员进行作业。只能使用设计用于焊接聚合物土工膜的设备。此类设备的所有操作员都应接受针对所用设备和土工膜的培训。 1.6 单位-- 以英寸磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.7 本标准并不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。 1.8 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====== 4.1 本规程的目的是提供关于如何使用热空气或电热楔焊机组装聚合物土工膜的一般指导，包括温度、速度和压力（T、S和P）的影响，表面的制备/清洁等，以确定组件的质量和耐用性。

1.1 This practice is applicable for the hot wedge welding of geomembrane liners produced from polymer materials in sealing of geotechnical and hydraulic engineering systems. 1.2 Welding devices may include hot wedge or hot air wedge welders. 1.3 In this practice, the aim is to provide information on and give insight into the importance of factors that influence the quality and durability of geomembrane welds. This standard covers all weldable thermoplastic geomembranes, including of reinforced materials. 1.4 Extrusion welding and the welding of bituminous and non-thermoplastic geomembranes are not covered. 1.5 The work should only be carried out by operators with demonstrated competency in the welding of polymeric geomembranes. Only equipment designed for the welding of polymeric geomembranes shall be used. All operators of such equipment shall have training specific to the equipment and geomembranes being used. 1.6 Units— The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.7 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. 1.8 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 ====== 4.1 The purpose of this practice is to provide general guidance on how to assemble polymeric geomembranes using hot air or electrically heated wedge welder, including the influence of temperature, speed, and pressure (T, S, and P), preparation/cleaning of the surface, and so forth, to establish the quality and durability of the assembly.