??????? ?????? ????? ?? ????? ?????????

????????? ?????:

??????: ?? ?????????? ??????? ???? ?????? ?????? ???? ???? ?????, ?? ?????????? ??????? ??? ?????? ?????? ???? ?????, ?? ?????????? ??????? ????, ???? ????? ????? ?? ??????? ?????? ?????;

??? ??????? ?????: ????? ????? ?? ???, ??????? ????? ?? ???? ??????????? ??????? ?????? ???? ?????? ????? ???? ?????? ??? ????? ???? ?????? ??? ?????. ???? ?????? ??? ?????? ?????? ??????? ????????? ????? ???? ???????? ?????? ????;

Pile end cement slurry injection: After the bottom expansion is completed, the pile end cement slurry is injected, and the drilling rig is repeatedly raised and lowered during injection to ensure that all the bottom expansion parts are injected and the pile end cement slurry is uniform;

?????? ??? ???????? ???????? ??? ?? ????.

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?????, ?????? ?? ????? ?? ??? ?????.

② ??????? ??, ??????, ???? ???? ??, ??????? ?? ?????????? ???????, ?????? ??, ?????? (?????) ???????, ???? ???????????, ?? ness ??? ?? ???? ??? ????? ????????;

????????? ????? ??? ????????? (????????) ?? ???? ?? ????? ?? ???? ?? ????? ?? ???? ?? ????? ?? ???? ?? ????? ?? ???? ?? ????? ?? ??????? ???????? ???????, ???????? ????? ????? ?? ?????.

Page ??????? ?????? ??? ????? ??????? ???????????? er ? ????? ?? ??? ??? ?????? ??????? ?? ??? ?????? ???? ??????????? (???? ??????????) ???? ???? ?????? ????? ??;

H out ????? ?????? ????? ???? ?????? ????? ?? ???, ???? ???????? ????? ?????? ?; ???? ????? ????, ?????? ??? ??????? ??????? ????;

The ????? ???????? ????? ????? ??? ???? on ? ?? ???? ???? ?????? ????? 3 ?? ??? ???? ?????? ??????? ??.

5. ??????? ?????? ?? ???? ??????? ?????

??????? ?????? ?? ???? ??????? ????? ?????? ?????? ?????? ????????? ???? ?????? ???????. ?????, ?? ????????? ???? ??? ?????????? ????? ??????? ??? ?????? ??? ?? ??? ?????? ??? ?????? ???????? ???? ?? ???, ????????? ???????????? ??? ???. ???? ?? ???? ???? ??????? ??????? ??? ????????? ??????? ?? ???, ????????? ???? ????? ??? ?????? ?????? ????? ????????? ??. ???? ??? ?????? ?????? ?? ??? ?????? ???????, ????? 85M ??? ??? ??? ???? ??? ?? ????????? ???????????? ???????? ???? ????.