soil cave roof 土洞顶板
soil cave collapse 土洞塌陷
critical soil cave 临界土洞
soil cave foundation 土洞地基
Subgrade soil cave karst 岩溶路基土洞
soil cave construction technique 土洞施工技术
cave in soil 土洞
The formation mechanism of cave and soil cave has been analyzed.
对溶洞和土洞的发育机制进行了分析。
Cave, soil cave and the collapse caused by them have been paid more and more attention in Karst region.
岩溶区的溶洞、土洞及其产生的塌陷越来越受到人们的关注。
The seepage erosion and disintegration produced by the activity of ground water will result in formation of soil cave.
岩溶区地下水或地表水的活动，将对土层产生潜蚀作用及崩解作用，进而形成土洞。
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