CAJ | 학술논문

隧道施工地下水问题困扰着隧道工程界多年，关于地下水压力对支护结构的影响认识不一致，为此需要从地下水作用机制研究出发，开展隧道衬砌水压力模型试验研究。模型隧道净空设计参考国内300～350 km/h高速铁路单线标准，模型试验的设计包括围岩模拟、试验流体、参数选择、试验工况、试验仪器选择等，试验工况包括：不同水头高度(1，2和4 m)和不同支护及排水条件(无支护全排和二衬不排水)等。通过在实际岩体中的小比例洞室模拟试验研究，对隧道开挖和支护引起的地下水渗流变化过程、地下水排放方式与水荷载之间的相关关系等取得较明确的定性认识，并以模型试验为基础开展数值模拟分析，为隧道水压力定量研究奠定试验基础。
수도시공지하수문제곤우착수도공정계다년，관우지하수압력대지호결구적영향인식불일치，위차수요종지하수작용궤제연구출발，개전수도츤체수압력모형시험연구。모형수도정공설계삼고국내300～350 km/h고속철로단선표준，모형시험적설계포괄위암모의、시험류체、삼수선택、시험공황、시험의기선택등，시험공황포괄：불동수두고도(1，2화4 m)화불동지호급배수조건(무지호전배화이츤불배수)등。통과재실제암체중적소비례동실모의시험연구，대수도개알화지호인기적지하수삼류변화과정、지하수배방방식여수하재지간적상관관계등취득교명학적정성인식，병이모형시험위기출개전수치모의분석，위수도수압력정량연구전정시험기출。
A consensus about the understanding of groundwater effecting on tunnels is not reached yet up to now, and the impact of groundwater pressure on supporting structure was not fully understood. Based on this,model tests are carried out to understand the effects of water pressure on tunnel. In a 300-350 km/h high-speed railway project,the design of model test included simulated rock,test fluid,material parameters,test conditions,test equipment. In this test,various working conditions were considered,such as 1 m,2 m and 4 m water heads without supporting and with free drainage,lined with undrained condition. With the testing results,a relatively clear understanding was obtained,i.e. the changing process of groundwater seepage caused by tunnel excavation and shoring,the correlation between water load and groundwater discharge methods. Furthermore, numerical simulations were performed based on the model test results.