CAJ | 학술논문

根据多种勘察方法取得资料分析，本研究的塌陷区属于覆盖型岩溶区，覆盖在岩溶地层之上的土体属级配不良的土体，在长期的地下水潜蚀演化过程中，土体中的细粒不断被渗流携走，使土体形成隐伏“土洞”地层，土体抗剪强度逐渐降低，在巨大的暴雨洪水水动力作用下隐伏的“土洞”地层突然坍塌，松散的土体被洪水携带流入下伏灰岩岩溶地层，最终造成河道地面塌陷。对地面塌陷区应采取水平防渗铺盖、垂直灌浆、强夯密实等工程措施进行治理。
근거다충감찰방법취득자료분석，본연구적탑함구속우복개형암용구，복개재암용지층지상적토체속급배불량적토체，재장기적지하수잠식연화과정중，토체중적세립불단피삼류휴주，사토체형성은복“토동”지층，토체항전강도축점강저，재거대적폭우홍수수동력작용하은복적“토동”지층돌연담탑，송산적토체피홍수휴대류입하복회암암용지층，최종조성하도지면탑함。대지면탑함구응채취수평방삼포개、수직관장、강항밀실등공정조시진행치리。
According to the analysis of a variety of reconnaissance method to access data,the subsidence of the study belongs to karst area,covering soil in karst strata above the gradation of poor soil. With the creep in the long?term groundwater evolution process,the fine grained soil by continual seepage was carried away,making the soil formation of concealed“hole”formation. Accordingly,the soil shear strength gradually reduced,in a huge storm floods under the hydrodynamic action,the concealed“hole”formation collapse suddenly. And the loose soil was carried by the flood into the underlying limestone karst formation,resulting in the river surface collapse. Engineering measures such as horizontal impervious blanket,vertical grounting,dynamic compaction,were suggusted for the ground subsidence governance.