覆土深度 meaning in English

covering depth
depth of covering

Assessment of site conditions is necessary to ascertain suitability for the mf method . these include geological conditions , underground water table levels and overlying soil thickness , and all other relevant factors
（六）多圆形潜盾隧道之施工条件探讨，对多圆形潜盾隧道工法之适用地质、覆土深度及其他限制条件需一并考量。
As far as vibration is concerned , there is an urgent need to establish relevant laws and standards that not only conform to international standards but also satisfy local residents . these standards must be set according to the technical limitations that govern mrt construction in densely - populated areas : namely , line configuration , station location , headway , soil cover , proximity of residences , underground passage , road width , etc
又如振动问题，在狭隘都会区中建造捷运系统，受到线形、设站、车间距、道路覆土深度、紧邻民房、地下穿越、路辐等技术限制，故如何订定一套合于国际潮流之标准又能府合民意之