???????:????????? ??????? ???? ??? ???????, ????????, ????? ????? ?? ??????? ????? ????? ??????? ??.
????????? ??????? ???? ??? ???????, ????????, ????? ????? ?? ??????? ????? ????? ??????? ??.
??? ??????? ??? ????????, ??? ?????? ?? ????? ????????? ??????? ??. ??????? ???????? ??????? ???????? ????????????? ??????? ?? ??? ???? ????? ??????? ???? ????? ??????? ??. ??? ??????? ?????? 8 ???? ???? ??????.



????????? ??????? ????? ??????? ???????????? ???????? ?? ??????? ??? ??????? ??????? ????? ?? ?????? ?????.
?????? ????? ?????????? ??????????? ???????? ???, ????? ????????? ????? ???????? ???, ????? ?????????? ????? ???????? ????? ???????? ??????? ??? ??????? ????? ???? ?????? ??? ????. ?? ???? ??????, ???????? ?????? ?????? ??? ???? ???????? ???????? ?????? ???? ??? ?????? ???? ??????? ??? ?????? ???????? ??? ?????. ???????? ?????? ?????? ??? ????? ???????? ??????? ????? ???? ??????? ??? ????? ?????? ???????? ????? ???? ????. ??????? ??????? ?????? ???????? ??.
?????? ????? ???????? ??????? ?????????
(1) ???? ?????? ??????
????????????, ????????? ?????? ??? ????? ????, ?????? ????? ????????? ???? KV=3~5 ??? ?? ????? ????? ????????? ???? KV=2.5~4 ??? ?? ?????. ?????????? ????? ???????? ???? ????? ????? ?? ???????? ?????????? ??? ?? ???????? ???? ???? ????? ?? ?????. ???????? ????? ???? ???, ????? ????? ?? ?????, ?? ???????? ????? ????? ???, ???? ????? ?? ?????.
(2) ????? ??????
????? ?????? K ????????? ??????? ?????? ?????????? ?????? ?? ??? ??????? ????????? ?? ??? ????.

(3) ??? ????????? ??? ?????? ????
????????? ????? ???? ????, ??? ????????? ??? ?????? ???? ???????????? 15° ~ 25° ??, ????? ????? ?? ??? ???? ????? ????, ?? ????? ???? ?? ??? ????? ????? ????.
(4) ??? ???????? ?????
????? ???? ???? ??????? A ??? ????????? ????????? ???? ??????? ??? ?????? ?? ?? ????? ?????????? ?? ??? ??? ??? ?????? ??? ????? ?? ?????. ??? ?????? ???????? ????? ??????????? ?????? ????????????????, ???????? ??????? ?? ????? ?????? ??????????? ???????? ?????? ??. ????????? A = 3 ~ 6mm ?? ???, ????? ???? ???????? ????? ?????, ??? ???????? ???? ????? ???, ????????? ?????? ???? ???????? ????? ??.
?????? ????? ?????? ????????? ???? ??????
??? ??????? ??????? ???????????? ???? ????? ???? ??????? ???? ?????:
- ??? ??????? ????? (???? ???? ??? ?????????? ?????? ?????????, ??????? ???????? ???? ???? ??????? ?????????, ?????????? ?????? ?? ???? ?????????, ?????????? ????, ?????????? ??????? ?? ????);
- ??? ????????? ??????? (??? ????????, ??? ???? ???, ??? ???????? ???????? ?? ????, ??? ???????? ??????? ???????, ??? ????????? ??? ??????, ????????? ?? ????????? ????).
- ?????? ??????? ???????? ???????? (??????? ???????, ???????? ????????????, ???????? ??????, ???????? ????????? ?????? ????), ????.

??? ???? ???? ?????? ?????, ??? ????? ??????? ??????? ?? ?????:
(1) ???????? ???????? ????? ???????? ???, ???????? ?????? ??? ??????? ???????? ???????? ????????? ??? ??? ?????? 2.5 ??? 3 ?????? ??? ?????. ?? ???? ????? ????? ???????? ????? ????????? ????? ??? ?????? ?? ?????.
(2) ????? ???????? ???????? ??? ??????????? ???????? ?????? ????? ????, ??? ??? ?? ??? ???????
(3) ??????????? ?????????? ?????? ??? ????? ?? ??????? ???? ?? ?????.
(4) ??? ???????? ????? ?????
????????? ?????? ???? ????????? ???? ?????? ???, ??? ???, ????? ????? ??? ?????? ??? ???, ??? ?????? ???????? ????????? ??? ?? ???? ????????? 2 ??? 2.2 ?????? ????? ?? ???, ?????? 3 ?????? ??? ???? ????;
?????? ????????? ???????? ????????? ???? ????? ??? ?????? ??? ???, ??? ??? ???????? ????????? ??? ?? ???? ????????? 1.2 ??????;
???? ????????? ???????? ????????? ???? ?????? ??? ???, ??? ???????? ????????? ??? ?? ????? ????????? 1.05 ?????? ??? ?????.
????????? ???? ????, ????? ???????? ???????????? 2 ??? 2.5 ????? ?? ???? ?? ???? ???? ???? ?????? ????????? ???? ??.
(5) ??????? ???? ?? ??? ???? ???? ???? ?????? ????? ?????.
????? ????????? ???????? ??? ?????? ?????? ???, ??????? ???? ???? ?? ???? ?????? ??? ?????? ?? ?????. ??????? ??? ?????? ??????? ??????? ??????? ???? ??????, ??? ???? ?????? ?????? ?? ??? ???? ???? ????? ?????? ?????? ??. ??????? ???? ????? ????? ??? ????? ???????? ???? ????? ???????????? ????? ????? ?
(6) ????? ??????????? ????????? ????? ?????
???????? ???????????? ???????? ???? ???? ??? ?? ????? ??? ????????? ????? ??????????? ????????? ?? ???, ????? ???????? ????? ????? ????????? ??.
?????? ????????? ???????? ???????????? ???? ?????? ??? ????? ???? ????, ????? ??????????? ????????? ????? ????? ?????????? 0.8 ??? 0.85 ????? ??? ?????. ???? ???????, ??? ??? ?????? ??? ?????? ???????? ???????? ??????? ??.
(7) 200mm ? ???? ???????? ????, ?? ??? ????? ??? ??????? ?????? ?????? ????;
(8) ?????? ?? ???? ???, ??????? ?? ?????? ????? ???? ????? ???? ?????? ????? ???? ???? ????? ????? ???????. ?????? ????? ?????? ???? ?? ???? ???, ????? ????? ????????? ??? ????????, ???????? ????????????? ???? ???????? ?????? ?? ??? ?? ?????.
????? ????? ???? ????????, ??? ??????? ????? ???? ????? ?????. ??? ??? ??? ??????? ?????? ?????? ???? ????? ???? ????? ???? ???? ????? ?????.





















