CAJ | 학술논문

冻胀破坏是制约季节性冻土地区渠道衬砌与防渗工程建设的关键因素，采用非冻胀性材料置换渠道冻胀性土壤是有效防止渠道冻胀破坏的措施之一。针对北方寒冷地区渠道冻胀破坏的特点及置换防冻胀技术应用中存在的问题，提出了混凝土衬砌渠道置换防冻胀标准化结构形式，明确了其适用条件和范围，确定了置换层施工的技术要求，并基于热阻等效原理建立了置换层厚度的计算公式，根据工程实例数据确定了计算修正系数，并利用新疆冲乎尔灌区渠道置换防冻胀试验进行了验证，最终的置换层厚度计算值与最佳设计值之间最大误差仅为4．3％，表明该计算公式有较高精确度，对渠道置换防冻胀工程的设计建设可起到一定参考作用。
동창파배시제약계절성동토지구거도츤체여방삼공정건설적관건인소，채용비동창성재료치환거도동창성토양시유효방지거도동창파배적조시지일。침대북방한랭지구거도동창파배적특점급치환방동창기술응용중존재적문제，제출료혼응토츤체거도치환방동창표준화결구형식，명학료기괄용조건화범위，학정료치환층시공적기술요구，병기우열조등효원리건립료치환층후도적계산공식，근거공정실례수거학정료계산수정계수，병이용신강충호이관구거도치환방동창시험진행료험증，최종적치환층후도계산치여최가설계치지간최대오차부위4．3％，표명해계산공식유교고정학도，대거도치환방동창공정적설계건설가기도일정삼고작용。
Frost heave damage is a key constraint factor for the concrete lined canal construction in seasonal frozen soil areas .Using non-heaving material to replace frost-heaving soil is one of the effective measures to prevent the frozen damage of concrete lined ca‐nal .According to the characteristics of the canal frost heave damage and the problems in replacement frost heave prevention ,this pa‐per puts forward a standardized structure pattern of the replacement frost heave prevention technology for the concrete lined canal , gives its conditions and scopes ,and also confirms the technical requirements of the replacement layer construction .Meanwhile , based on the thermal equivalence principle ,this paper establishes the calculation formula of replacement layer thickness ,which is verified by the practical project .The final results show that the maximum error between calculated value and the best design value is only 4 .3% ,which proves that the formula has a high accuracy and can play a reference role for the design and construction of the concrete canal replacement frost heave projects .