Currently,the method of prefabricating concrete high strength wall by pump transporting is still without successful precedent in our country.In Banji Coal Mine,the prefasrications shaft wall is designed for double-decked steel bar or double-decked steel plate,concrete marking designed for C40 to C70.Through technical reform,realize pump transporting the high strength concrete,simplify the constructing link,speed up the constructing progress,guarante the quality and accumulate the experience of the method.

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