1.1 本规程涵盖了用于确定渗漏或非渗漏承压含水层的透射率和蓄水系数的分析解决方案。它用于分析来自控制井的流量数据，同时保持井内水头恒定。 1.2 该分析程序在实践中与现场程序结合使用 D5786 . 1.3 限制- 该技术在确定含水层水力特性方面的局限性主要与现场情况和解决方案简化假设之间的对应关系有关。 1.4 单位- 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中的值可能不是精确等价的；因此，每个系统应独立使用。将两个系统的值合并可能会导致不符合标准。以国际单位制以外的单位报告试验结果不应视为不符合本惯例。 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 . 1.6 本实践提供了一组用于执行一个或多个特定操作的说明。本文件不能取代教育或经验，应与专业判断一起使用。并非实践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。 1.7 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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（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====== 5.1 假设渗漏含水层: 5.1.1 提款( s W )在控制井中是恒定的， 5.1.2 油井直径无限小，完全穿透含水层， 5.1.3 含水层是均质、各向同性和广泛分布的，并且 5.1.4 控制井为100 % 有效率的 5.2 假设非渗漏含水层: 5.2.1 提款( s W )在控制井中是恒定的， 5.2.2 油井直径无限小，完全穿透含水层， 5.2.3 含水层是均质、各向同性的，区域广泛， 5.2.4 油井排放仅来自非渗漏含水层中的蓄水，以及 5.2.5 控制井为100 % 有效率的 5.3 假设的含义: 5.3.1 这些假设适用于承压含水层和全渗透控制井。然而，这种做法可适用于部分穿透井，其中，如果水平导水率显著大于垂直导水率，则该方法可提供与井开放区间相邻的含水层的导水率估计值。 5.3.2 存储系数获得的值不如透射率计算值可靠。根据控制井数据计算的存储系数值不可靠。 注7: 本标准产生的结果的质量取决于执行该标准的人员的能力，以及所用设备和设施的适用性。符合实践标准的机构 D3740 通常认为能够胜任和客观的测试/采样/检查等。本标准的用户应注意遵守惯例 D3740 本身并不能保证可靠的结果。可靠的结果取决于许多因素；实践 D3740 提供了一种评估其中一些因素的方法。

1.1 This practice covers an analytical solution for determining transmissivity and storage coefficient of a leaky or nonleaky confined aquifer. It is used to analyze data on the flow rate from a control well while a constant head is maintained in the well. 1.2 This analytical procedure is used in conjunction with the field procedure in Practice D5786 . 1.3 Limitations— The limitations of this technique for the determination of hydraulic properties of aquifers are primarily related to the correspondence between field situation and the simplifying assumption of the solution. 1.4 Units— The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values 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. Reporting of test results in units other than SI shall not be regarded as nonconformance with this practice. 1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 . 1.6 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of the 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 the 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. 1.7 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 ====== 5.1 Assumptions—Leaky Aquifer: 5.1.1 Drawdown ( s W ) in the control well is constant, 5.1.2 Well is infinitesimal diameter and fully penetrates aquifer, 5.1.3 The aquifer is homogeneous, isotropic, and areally extensive, and 5.1.4 The control well is 100 % efficient. 5.2 Assumptions—Nonleaky Aquifer: 5.2.1 Drawdown ( s W ) in the control well is constant, 5.2.2 Well is infinitesimal diameter and fully penetrates aquifer, 5.2.3 The aquifer is homogeneous, isotropic, and areally extensive, 5.2.4 Discharge from the well is derived exclusively from storage in the nonleaky aquifer, and 5.2.5 The control well is 100 % efficient. 5.3 Implications of Assumptions: 5.3.1 The assumptions are applicable to confined aquifers and fully penetrating control wells. However, this practice may be applied to partially penetrating wells where the method may provide an estimate of hydraulic conductivity for the aquifer adjacent to the open interval of the well if the horizontal hydraulic conductivity is significantly greater than the vertical hydraulic conductivity. 5.3.2 Values obtained for storage coefficient are less reliable than the values calculated for transmissivity. Storage coefficient values calculated from control well data are not reliable. Note 7: 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.