问题
单项选择题
为防止隧道衬砌施工中裂缝的产生，衬砌厚度应根据（）确定。
A.衬砌混凝土的强度要求
B.衬砌混凝土的坍落度要求
C.围岩类别、形状、结构
D.超挖和欠挖情况
答案
参考答案：C
解析：设计时应根据围岩级别、性状、结构等地质情况，正确选取衬砲形式及衬砲厚度，确保衬砌具有足够的承载能力。
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为防止隧道衬砌施工中裂缝的产生，衬砌厚度应根据（）确定。
A.衬砌混凝土的强度要求
B.衬砌混凝土的坍落度要求
C.围岩类别、形状、结构
D.超挖和欠挖情况
参考答案：C
解析：设计时应根据围岩级别、性状、结构等地质情况，正确选取衬砲形式及衬砲厚度，确保衬砌具有足够的承载能力。
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