A vertical fault has neither a footwall nor a hanging wall. 具有直立斷層面的斷層既無上盤，也無下盤。
As a result,the new scheme of sublevel caving with footwall drifts,is raised. 為此，提出自放頂、設(shè)回收進(jìn)路的無底柱分段崩落法新方案，實(shí)施后成效顯著。
The influence of mining and seepage on footwall rocks is analyzed by the... 在此基礎(chǔ)上,進(jìn)行了采動(dòng)和滲流對煤層底板巖體穩(wěn)定性影響的有限元分析計(jì)算。
In structural geology the relative movement of the banging wait and footwall is a major factor to classify various faults. 在構(gòu)造地質(zhì)學(xué)中，斷層上盤和下盤的相對位移運(yùn)動(dòng)特征是劃分各種類型斷層的一個(gè)主要因素。
The exploration experience of the Los Angeles basin demonstrates that the footwall fault traps can have very significant reserves. 洛杉磯盆地的勘探實(shí)踐說明斷層下盤圈閉有時(shí)也能含有很可觀的儲(chǔ)量。