施工中应做好衬砌背后的疏排水设施，若有压浆时，不得将排水设施堵塞。
During construction, drainage water facilities behind the lining shall be well arranged, if there is the grouting, it shall not block the drainage facilities.
施工中应做好衬砌背后的疏排水设施，若有压浆时，不得将排水设施堵塞。
During construction, drainage water facilities behind the lining shall be well arranged, if there is the grouting, it shall not block the drainage facilities.
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