ASTM D4729-2008 标准详情
- 标准号:ASTM D4729-2008
- 中文标题:使用扁千斤顶法现场测定变形的应力和模数的标准试验方法
- 英文标题:Standard Test Method for In Situ Stress and Modulus of Deformation Using Flatjack Method
- 标准类别:美国材料与试验协会ASTM
- 发布日期:2008
Tests in Orthogonal Directions8212;The flatjack most accurately determines the stress parallel to the long axis of the adit, because this stress is the least affected by the presence of the opening. (The other tangential stress is highly concentrated
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