1.1 本规程涵盖了厚壁、分桶驱动土壤采样的程序，以获得土壤的代表性样本，用于分类和实验室测试。取样器被视为厚壁取样器，带有锋利的切割鞋和球形止回孔。中间筒体部分为分裂筒体设计，包含环形衬套。取样器通常是驱动式的，但也可以推入较软的沉积物中。可记录贯入阻力数据。本标准使用与试验方法类似的程序 D1586 土壤的渗透阻力和分桶取样。然而，在本实践中，使用了不同的锤重、落差高度和不同尺寸的取样器，因此不得将数据报告为符合试验方法 D1586 不能用于根据实践确定砂土的归一化贯入阻力数据 D6066 . 1.2 本实践涉及旋转钻井设备的使用（指南 D5783 实践 D6151 ). 其他钻孔和取样程序（指南 D6286 指导 D6169 )是可用的，可能更合适。未考虑无钻孔的手动或浅层采样。地下勘探应按照指南进行记录 D5434 . 土壤样本应根据实践进行分类 D2488 . 1.3 由于取样器是一个驱动厚壁取样管，因此本试验中的土壤样本将有一定程度的干扰。 指南表2 D6169 土壤和岩石采样为可能需要术语定义的完整样本的样本选择土壤采样器提供了指导 D653 用于实验室测试。用户（工程师）必须评估干扰程度，以确定样品在实验室测试中的适用性。如果样品不适合实验室测试，则应使用其他土壤取样器（参见 4.4.1 ). 1.4 以英寸-磅单位或国际单位制（括号内）表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值； 因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准 1.5 所有观察值和计算值应符合实践中确定的有效数字和舍入准则 D6026 ，除非被本标准取代。 1.6 这种做法提供了有组织的信息收集或一系列选择，并不建议采取具体行动。本文件不能取代教育或经验，应与专业判断结合使用。并非本惯例的所有方面都适用于所有情况。 本ASTM标准不代表或取代必须根据其判断给定专业服务的充分性的谨慎标准，也不应在不考虑项目的许多独特方面的情况下应用本文件。本文件标题中的“标准”一词仅表示该文件已通过ASTM共识程序获得批准。 1.6.1 本实践并不旨在全面解决与土壤采样相关的所有方法和问题。用户应寻求合格的专业人士，以决定最成功的现场勘探设备和方法。 可以使用其他方法监测土壤采样，合格的专业人员应能够灵活地对本实践中未涵盖的可能替代方案进行判断。 1.7 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制定适当的安全和健康实践。用户在使用本规范时必须遵守现行的监管规范，如OSHA（职业健康安全管理局）指南。有关良好的安全实践，请参阅适用的OSHA法规和其他钻井安全指南。 2. 1.8 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《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 在美国西南部干旱地区，厚壁环形衬里驱动取样器已经使用了50多年，在那里，非饱和土壤很难使用薄壁管进行采样（实践 D1587 ). 取样器的不同名称包括“Dames and Moore，California，Modified California桶”，桶外径为2。 5至3.5英寸。[60-90毫米]。 4. 除了锤击数外，这些驱动取样器还有一个额外的优点，即具有可以在实验室评估的环形衬里样本。原始Dames和Moore型采样器的版本如所示 图1 仍在使用，但许多现在使用的是金刚石钻芯制造商协会（DCDMA） 5. 分体式桶驱动取样器规范 图2 . 环形取样器通常具有6英寸的规定。[150 mm]废桶，桶顶部有或没有环。在非饱和土壤中钻孔几乎完全采用空心- 阀杆螺旋钻（实践 D6151 )因为这是一种干式钻井方法。该测试可以在流体旋转或其他钻孔中进行，但不建议在非饱和土壤中使用流体旋转方法，因为钻井液可能会改变样品的性质。大多数操作员使用140 lb[75 kg]的锤子质量，但也可以使用其他锤子质量。 实践 D3740 是为从事土壤和岩石实验室测试和/或检查的机构开发的。因此，它并不完全适用于执行这种做法的机构。然而，这种做法的使用者应该认识到，实践的框架 D3740 适用于评估执行此实践的机构的质量。目前，还没有已知的合格国家机构来检查执行这种做法的机构。

1.1 This practice covers procedure for thick wall, split barrel drive sampling of soil to obtain representative samples of soil for classification and laboratory testing. The sampler is considered to be a thick wall sampler with sharpened cutting shoe and ball check vent. The middle barrel section is split barrel design containing ring liners. The sampler is often driven, but can also be pushed in softer deposits. Penetration resistance data may be recorded. This standard uses procedures similar to Test Method D1586 on Penetration Resistance and Split Barrel Sampling of Soils. However, in this practice, differing hammer weights, drop heights, and different size samplers are used, so the data must not be reported as conforming to Test Method D1586 and cannot be used to determine Normalized penetration resistance data for sands in accordance with Practice D6066 . 1.2 This practice involves use of rotary drilling equipment (Guide D5783 , Practice D6151 ). Other drilling and sampling procedures (Guide D6286 , Guide D6169 ) are available and may be more appropriate. Considerations for hand driving or shallow sampling without boreholes are not addressed. Subsurface explorations should be recorded in accordance with Guide D5434 . Soil samples should be classified in accordance with Practice D2488 . 1.3 The soil samples from this test will have some degree of disturbance because the sampler is a driven thick walled sample tube. Table 2 of Guide D6169 on Soil and Rock Sampling provides guidance for selection of soil samplers for samples that may require intact samples defined by Terminology D653 for laboratory testing. The degree of disturbance must be evaluated by the user (engineer) to determine the suitability of the sample for use in laboratory tests. If samples are not suitable for laboratory testing, other soil samplers should be used (see 4.4.1 ). 1.4 The values stated in either inch-pound units or SI units [presented in brackets] are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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. 1.6 This practice offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgement. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process. 1.6.1 This practice does not purport to comprehensively address all of the methods and the issues associated with soil sampling. Users should seek qualified professionals for the decisions as to the proper equipment and methods that would be most successful for their site exploration. Other methods may be available for monitoring soil sampling and qualified professionals should have flexibility to exercise judgement as to possible alternatives not covered in this practice. 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 and health practices. The user must comply with prevalent regulatory codes, such as OSHA (Occupational Health and Safety Administration) guidelines while using this practice. For good safety practice, consult applicable OSHA regulations and other safety guides on drilling. 2 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 thick-wall ring lined drive sampler has been used for over 50 years in the arid southwest regions of the U.S. where unsaturated soils are too difficult to sample using the thin-walled tube (Practice D1587 ). Variations of the sampler include names such as “Dames and Moore, California, Modified California barrels” with outside barrel diameters ranging from 2.5 to 3.5 in. [60-90 mm]. 4 In addition to the blow count, these drive samplers have the added benefit of having a ring lined specimens that can be evaluated in the laboratory. Versions of the original Dames and Moore type sampler shown in Fig. 1 are still used, but many now use the Diamond Drill Core Manufacturers Association (DCDMA) 5 specification split barrel drive samplers Fig. 2 . The ring lined samplers normally have provisions for a 6-in. [150 mm] waste barrel with or without rings in the top section of the barrel. Drilling in the unsaturated soils is performed almost exclusively with hollow-stem augers (Practice D6151 ) because it is a dry drilling method. The test can be performed in fluid rotary or other drill holes but use of fluid rotary methods are not recommended in unsaturated soils as the drill fluid may alter the sample properties. Most operators use a 140 lb [75 kg] hammer mass but other hammer masses may be used. Practice D3740 was developed for agencies engaged in the laboratory testing and/or inspection of soil and rock. As such, it is not totally applicable to agencies performing this practice. However, user of this practice should recognize that the framework of practice D3740 is appropriate for evaluating the quality of an agency performing this practice. Currently there is no known qualifying national authority that inspects agencies that perform this practice.