1.1 本试验方法包括评估临时沟渠检查系统保护土渠免受雨水侵蚀能力的指南、要求和程序。该保护的关键要素是临时沟渠检查的能力: 1.1.1 减缓或池塘径流，或两者兼而有之，以促进沉降，从而减少土壤颗粒向下游的迁移； 1.1.2 捕获结构上游的土壤颗粒；和 1.1.3 减少土壤侵蚀。 1.2 该测试方法采用全尺寸测试程序，而不是缩小规模（台架规模）模拟，并在土方工程作业结束时，但在植被重建工作开始之前，根据施工现场的典型情况进行模式化。因此，该测试方法仅考虑未获取的条件。 1.3 该试验方法提供了在受控和记录条件下，临时沟渠检查与基线裸土条件的对比评估。 1.4 单位- 以国际单位制表示的值应视为标准值。括号中给出的值是英寸磅单位的数学转换，仅供参考，不被视为标准值。 1.5 所有观测值和计算值应符合实践中确立的有效数字和舍入指南 D6026型 除非被本标准取代。 1.5.1 本标准中用于规定如何收集/记录和计算数据的程序被视为行业标准。此外，它们代表通常应保留的有效数字。使用的程序不考虑材料变化、获取数据的目的、特殊目的研究或用户目标的任何考虑因素；通常的做法是增加或减少报告数据的有效位数，以符合这些考虑。 考虑工程设计分析方法中使用的有效数字超出了本标准的范围。 1.6 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建立适当的安全、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（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 本试验方法评估临时沟渠检查系统及其安装方式，以: 5.1.1 在不同渠道条件和土壤类型的条件下，减少雨水径流中的土壤流失和泥沙浓度；和 5.1.2 通过减少悬浮固体，改善受土方工程影响区域的水质。 5.2 该测试方法模拟并检查了通常在涉及土方工程活动的施工现场发现的条件，包括:公路和道路；机场；住宅、商业和工业发展；管道、矿山和垃圾填埋场；高尔夫球场；等 5.3 此测试方法为性能测试。它是评估不同临时沟渠检查的侵蚀控制特性的比较工具。在比较不同实验室的结果时要谨慎，因为有关实验室间精度的信息不完整，土壤和其他环境和岩土条件的细微差异可能会影响。 注1: 本标准产生的结果质量取决于执行人员的能力以及所用设备和设施的适用性。符合实践标准的机构 第740页 通常认为能够胜任和客观的测试/取样/检验等。本标准的使用者应注意遵守规程 第740页 其本身不能保证可靠的结果。可靠的结果取决于许多因素；实践 第740页 提供了评估其中一些因素的方法。

1.1 This test method covers the guidelines, requirements, and procedures for evaluating the ability of temporary ditch check systems to protect earthen channels from stormwater-induced erosion. Critical elements of this protection are the ability of the temporary ditch check to: 1.1.1 Slow or pond runoff, or both, to encourage sedimentation, thereby reducing soil particle transport downstream; 1.1.2 Trap soil particles up stream of structure; and 1.1.3 Decrease soil erosion. 1.2 This test method utilizes full-scale testing procedures, rather than reduced-scale (bench-scale) simulation, and is patterned after conditions typically found on construction sites at the conclusion of earthwork operations, but prior to the start of revegetation work. Therefore this test method considers only unvegetated conditions. 1.3 This test method provides a comparative evaluation of a temporary ditch check to baseline bare soil conditions under controlled and documented conditions. 1.4 Units— The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units, which are provided for information only and are not considered standard. 1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 unless superseded by this standard. 1.5.1 The procedures used to specify how data are collected/recorded and calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that should generally be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. 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 This test method evaluates a system of temporary ditch checks and their means of installation to: 5.1.1 Reduce soil loss and sediment concentrations in stormwater runoff under conditions of varying channel conditions and soil type; and 5.1.2 Improve water quality exiting the area disturbed by earthwork activity by reducing suspended solids. 5.2 This test method models and examines conditions typically found on construction sites involving earthwork activities, including: highways and roads; airports; residential, commercial and industrial developments; pipelines, mines, and landfills; golf courses; etc. 5.3 This test method is a performance test. It is a comparative tool for evaluating the erosion control characteristics of different temporary ditch checks. Take caution when comparing results from different laboratories because information about between-laboratory precision is incomplete and slight differences in soil and other environmental and geotechnical conditions may affect. Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.