cushioning layer meaning in English

缓冲层

The cushion layer for the dam is constructed with the material prepared mainly with natural sandy gravel and mixed with proper amount of pebble and coarse sand
大坝垫层料采用以天然砂砾料为主、掺入小石和粗砂以调整级配的方式生产。
In order to know the characteristics of the material , analysis on the particle gradation and the related tests on seepage and seepage deformation are made , with which the problems related to the cushion layer material mainly composed of the natural sandy gravel are solved , and the construction demand is met as well , which can provide a reference for the other similar project
为掌握其特性，进行了颗粒级配分析、渗透和渗透变形等项试验，研究解决了以天然砂砾料为主的垫层料的水力学指标问题，满足了工程需要，可为类似工程应用提供参考。
For reducing cost and accelerating construction speed sparingly , at present in irrigation works construct in producing testing progressively and antiabrasion layer that popularize excavating method competent to split law in advance , flexible cushion layer etc . accumulative charge to vertical hole has been tested in three gorege project only
为了节省施工成本、加快施工进度，目前在水利工程施工生产中逐步试验并推广的保护层开挖方法有水平预裂法，柔性垫层法等。对于垂直孔水平聚能药包爆破用于生产试验仅在三峡进行过。