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大庆热电厂输煤系统埋深为13－15．2m，混凝土结构层厚1－1．4m，转运站和地道接口的变形缝呈“口”形，原设计采用400mm宽橡胶止水带进行防水，工程完工后由于变形缝漏水，漏水量达0．3m~3／h，由于漏水部位难以确定，须对整个变形缝进行全封闭式的堵漏。堵漏必须采用具有较大
The depth of the coal transport system in Daqing Thermal Power Plant is 13-15.2m, the thickness of the concrete structure is 1-1.4m, and the deformation joint of the transfer station and the tunnel interface is in the form of a “mouth”. The original design uses a 400mm wide rubber waterstop for waterproofing. After the completion of the project, the leakage due to deformation joints is 0.3m~3/h. Since the leakage part is difficult to determine, the entire deformation joint must be completely closed. Plugging must use larger