通过大型模型试验，研究了深层浸水条件下膨胀土挡墙侧向膨胀压力的变化规律。
A large scale model test was carried out to study the variation of lateral swelling pressure of expansive soil acting on retaining wall due to deep inundation.
管道安装后进行压力试验时，施工验收规范要求要对管道上的膨胀节进行临时约束。
In accordance with construction acceptance specification, temporary restraint is to apply to the expansion joint on pipeline at pressure test after pipe installation.
本项工作系统地进行了膨胀土的物理-力学性质试验及分析，尤其是膨胀率与干容重和含水量及外覆压力关系分析。
Systematic physio-mechanical properties test and analysis, especially analysis of relationship between expansion rate, dry density, water content, and overlying pressure, are carried out.
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