论文部分内容阅读
常言道土坝十有九裂。裂缝是土坝不能正常运用的四大原因(漫顶、滑坡、裂缝、渗漏)之一,应该给予足够的重视。裂缝产生的原因甚多,近年来这一问题日益受到人们的关注,研究的论文也不少,本文就这方面作一简略的综述并谈点粗浅看法供同志们参考。土体遭到破坏的形式有二:剪切、张拉。土体具有一定的抗剪强度,所以能维持某一坡度的稳定。土的抗剪强度愈大,土坡也就愈陡;土体亦具有一定的抗拉强度,当土体产生差异变形引起的拉应力超过土的极限抗拉强度时,就将导致坝体表面或内部产生裂缝。
As usual, earth dam ten nine crack. Crack is one of the four reasons why earth dams can not be used normally (landslides, landslides, cracks and seepage) and should be given enough attention. There are many reasons for the cracks. In recent years, this issue has been paid more and more attention by people and many papers have been studied. This article gives a brief overview of the problems and talks about the superficial views for reference. There are two forms of soil destruction: shear, tension. Soil has a certain shear strength, it can maintain a certain slope stability. The greater the shear strength of soil, the steeper the soil slope. The soil also has a certain tensile strength. When the soil tensile stress caused by the difference deformation exceeds the ultimate tensile strength of the soil, it will lead to the dam surface Or internal cracks.