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防止管涌的反滤层的填筑方式应为：

A、将各级配的砂砾石拌和均匀后填筑

B、顺水流方向分层，由细到粗分层碾压密实

C、逆水流方向分层，由细到粗分层碾压密实

D、只要求碾压密实、不透水

时间：2021-09-03 16:15 关键词：联大河南理工大学土木工程岩土工程勘察

答案解析

B@#@B

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