CAJ | 학술논문

本研究主要目的在于建立可同时考虑土壤参数及体力(body force)随孔隙率(porosity)变化之一维耦合地层下陷黏弹塑性数值模式，期能更精确地模拟现地之地层下陷现象。研究中加入水力传导系数、杨氏系数及体力随孔隙变化之影响，推导超抽地下水引致土壤压密之黏弹塑性控制方程式、初始条件及边界条件，并采用有限差分法建立数值计算模式。除以建立完成之模式测试评估体力、土壤参数随孔隙率变化、塑性效应及黏滞效应对土壤压密之影响程度外，并配合现地实测下陷数据，以验证模式之正确性。研究结果显示，一维黏弹塑性地层下陷模式可有效地仿真台湾现地之地层下陷变化。
본연구주요목적재우건립가동시고필토양삼수급체력(body force)수공극솔(porosity)변화지일유우합지층하함점탄소성수치모식，기능경정학지모의현지지지층하함현상。연구중가입수력전도계수、양씨계수급체력수공극변화지영향，추도초추지하수인치토양압밀지점탄소성공제방정식、초시조건급변계조건，병채용유한차분법건립수치계산모식。제이건립완성지모식측시평고체력、토양삼수수공극솔변화、소성효응급점체효응대토양압밀지영향정도외，병배합현지실측하함수거，이험증모식지정학성。연구결과현시，일유점탄소성지층하함모식가유효지방진태만현지지지층하함변화。
This study developed a 1D nonlinear viscoelastic-plastic land subsidence model by considering the change in soil parameters and body force as a function of porosity. The hydraulic conductivity, Young's modulus, and the relationship between the porosity and body force were considered in the model to derive the governing equation. The numerical model developed wil be veriifed using ifeld data. The goal of this study is to forecast the trend in land subsidence and provide an early-warning system.