back-fill

基本解释

One common method uses alternating layers of welded wire matting with layers of compacted back-fill earth from the landscaping site.
一个常见的方法是使用电焊交替层与层压实回席子，填补网站的美化地球。
By analyzing a practical project, the application of this technique in waste back-fill foundation of coalmine subsidence area is discussed.
结合工程实例，论述了该技术在煤矿塌陷区矸石回填地基中的应用。
Starting with analysis of goal of mining using back-fill method, the course of rock mechanics analysis is explained.
从分析冶金矿山充填采矿法开采的目的入手，探讨性地说明了相关的岩石力学分析过程。

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to refill an excavated trench, esp (in archaeology) at the end of an investigation
the soil used to do this