基本解釋[土木建築工程]防滲牆專業(yè)釋義土木建築工程防滲牆But the deep foundation in excess of 50m is a technically difficult problem in constructing the underground stub cutoff wall. In recent years it has been improved on equipment,techniques and materials,and breakthrough progress has been made.超過50m的深地基是該項技術(shù)在搆築地下防滲牆時難以跨越的技術(shù)難題。