{"id":33362,"date":"2023-05-12T06:00:22","date_gmt":"2023-05-11T23:00:22","guid":{"rendered":"http:\/\/noithathoaphat.in\/ctv\/?p=33362"},"modified":"2023-05-12T21:23:22","modified_gmt":"2023-05-12T14:23:22","slug":"dai-cuong-va-phan-loai-ve-dang-khi-cu-mat-phang-nghieng","status":"publish","type":"post","link":"http:\/\/noithathoaphat.in\/ctv\/index.php\/2023\/05\/12\/dai-cuong-va-phan-loai-ve-dang-khi-cu-mat-phang-nghieng\/","title":{"rendered":"\u0110\u1ea1i c\u01b0\u01a1ng v\u00e0 ph\u00e2n lo\u1ea1i v\u1ec1 d\u1ea1ng kh\u00ed c\u1ee5 m\u1eb7t ph\u1eb3ng nghi\u00eang."},"content":{"rendered":"

Ng\u00e0y nay m\u1eb7t ph\u1eb3ng nghi\u00eang \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng nh\u1ef1a t\u1ef1 c\u1ee9ng. M\u1eb7t ph\u1eb3ng nghi\u00eang c\u00f3 th\u1ec3 l\u00e0m tr\u1ef1c ti\u1ebfp tr\u00ean mi\u1ec7ng b\u1ec7nh nh\u00e2n ho\u1eb7c l\u00e0m gi\u00e1n ti\u1ebfp tr\u00ean m\u1eabu h\u00e0m th\u1ea1ch cao. Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c hi\u1ec7n gi\u00e1n ti\u1ebfp qua m\u1eabu h\u00e0m \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn h\u01a1n v\u00ec ti\u1ebft ki\u1ec7m th\u1eddi gian tr\u00ean gh\u1ebf, \u00edt g\u00e2y kh\u00f3 ch\u1ecbu cho b\u1ec7nh nh\u00e2n v\u00e0 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t kh\u00ed c\u1ee5 ho\u00e0n ch\u1ec9nh h\u01a1n trong labo tr\u01b0\u1edbc khi g\u1eafn tr\u00ean mi\u1ec7ng. B\u00e0i vi\u1ebft n\u00e0y n\u00f3i v\u1ec1 t\u1ed5ng quan v\u1ec1 kh\u00ed c\u1ee5 m\u1eb7t ph\u1eb3ng nghi\u00eang, ch\u1ec9 \u0111\u1ecbnh s\u1eed d\u1ee5ng tr\u00ean l\u00e2m s\u00e0ng v\u00e0 ph\u00e2n lo\u1ea1i ri\u00eang. C\u00f9ng t\u00ecm hi\u1ec3u b\u00e0i vi\u1ebft.<\/strong><\/p>\n

1. T\u1ed5ng quan v\u1ec1 kh\u00ed c\u1ee5 m\u1eb7t ph\u1eb3ng nghi\u00eang<\/h2>\n

C\u00e1ch \u0111\u00e2y g\u1ea7n 200 n\u0103m, Catalan \u0111\u00e3 gi\u1edbi thi\u1ec7u v\u1ec1 m\u1eb7t ph\u1eb3ng nghi\u00eang. \u0110\u00f3 l\u00e0 m\u1ed9t kh\u00ed c\u1ee5 ch\u1ec9nh h\u00ecnh t\u1ef1a tr\u00ean c\u00e1c r\u0103ng c\u1eeda d\u01b0\u1edbi v\u00e0 c\u00f3 m\u1ed9t m\u1eb7t nghi\u00eang gi\u00fap c\u00e1c r\u0103ng c\u1eeda tr\u00ean b\u1ecb c\u1eafn ch\u00e9o tr\u01b0\u1ee3t ra ngo\u00e0i khi mang kh\u00ed c\u1ee5 v\u00e0o. Kh\u00ed c\u1ee5 n\u00e0y \u0111\u00e3 t\u1eebng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u kh\u00e1c nhau. Ng\u00e0y nay m\u1eb7t ph\u1eb3ng nghi\u00eang \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng nh\u1ef1a t\u1ef1 c\u1ee9ng. M\u1eb7t ph\u1eb3ng nghi\u00eang c\u00f3 th\u1ec3 l\u00e0m tr\u1ef1c ti\u1ebfp tr\u00ean mi\u1ec7ng b\u1ec7nh nh\u00e2n ho\u1eb7c l\u00e0m gi\u00e1n ti\u1ebfp tr\u00ean m\u1eabu h\u00e0m th\u1ea1ch cao. Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c hi\u1ec7n gi\u00e1n ti\u1ebfp qua m\u1eabu h\u00e0m \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn h\u01a1n v\u00ec ti\u1ebft ki\u1ec7m th\u1eddi gian tr\u00ean gh\u1ebf, \u00edt g\u00e2y kh\u00f3 ch\u1ecbu cho b\u1ec7nh nh\u00e2n v\u00e0 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t kh\u00ed c\u1ee5 ho\u00e0n ch\u1ec9nh h\u01a1n trong labo tr\u01b0\u1edbc khi g\u1eafn tr\u00ean mi\u1ec7ng. V\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, m\u1eb7t ph\u1eb3ng nghi\u00eang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1eafn t\u1ea1m tr\u00ean mi\u1ec7ng ho\u1eb7c g\u1eafn c\u1ed1 \u0111\u1ecbnh b\u1eb1ng cement. Trong th\u1ef1c h\u00e0nh l\u00e2m s\u00e0ng, kh\u00ed c\u1ee5 \u0111\u01b0\u1ee3c g\u1eafn c\u1ed1 \u0111\u1ecbnh b\u1eb1ng cement c\u00f3 hi\u1ec7u qu\u1ea3 h\u01a1n v\u00ec b\u1ec7nh nh\u00e2n kh\u00f4ng th\u1ec3 th\u00e1o ra \u0111\u1ec3 \u0103n u\u1ed1ng n\u00ean gi\u00fap r\u0103ng c\u1eafn ch\u00e9o nh\u1ea3y kh\u1edbp nhanh ch\u00f3ng v\u00e0 d\u1ec5 d\u00e0ng.<\/p>\n

2. Ch\u1ec9 \u0111\u1ecbnh s\u1eed d\u1ee5ng<\/h2>\n

Tr\u01b0\u1edbc khi \u0111i\u1ec1u tr\u1ecb c\u1eafn ch\u00e9o r\u0103ng tr\u01b0\u1edbc, c\u1ea7n ch\u1ea9n \u0111o\u00e1n nguy\u00ean nh\u00e2n g\u00e2y c\u1eafn ch\u00e9o. C\u1eafn ch\u00e9o r\u0103ng tr\u01b0\u1edbc c\u00f3 th\u1ec3 c\u00f3 nguy\u00ean nh\u00e2n t\u1ea1i ch\u1ed7 do r\u0103ng nh\u01b0 v\u1ecb tr\u00ed m\u1ea7m r\u0103ng, r\u0103ng s\u1eefa t\u1ed3n t\u1ea1i l\u00e2u tr\u00ean cung h\u00e0m, b\u1ea5t th\u01b0\u1eddng qu\u00e1 tr\u00ecnh m\u1ecdc r\u0103ng …, do tr\u01b0\u1ee3t h\u00e0m ch\u1ee9c n\u0103ng hay do b\u1ea5t h\u00e0i h\u00f2a n\u1ec1n x\u01b0\u01a1ng h\u00e0m tr\u00ean v\u00e0 n\u1ec1n x\u01b0\u01a1ng h\u00e0m d\u01b0\u1edbi.<\/p>\n

M\u1eb7t ph\u1eb3ng nghi\u00eang th\u01b0\u1eddng s\u1eed d\u1ee5ng \u0111i\u1ec1u tr\u1ecb r\u0103ng c\u1eafn ch\u00e9o c\u00f3 nguy\u00ean nh\u00e2n t\u1ea1i ch\u1ed7 ho\u1eb7c ch\u1ee9c n\u0103ng. Khi c\u1eafn ch\u00e9o do nguy\u00ean nh\u00e2n b\u1ea5t h\u00e0i h\u00f2a x\u01b0\u01a1ng h\u00e0m, \u0111i\u1ec1u tr\u1ecb b\u1eb1ng m\u1eb7t ph\u1eb3ng nghi\u00eang s\u1ebd kh\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 v\u00e0 n\u00ean chuy\u1ec3n b\u1ec7nh nh\u00e2n \u0111\u1ebfn chuy\u00ean vi\u00ean ch\u1ec9nh h\u00ecnh.<\/p>\n

C\u00e1c r\u0103ng c\u1eafn ch\u00e9o \u0111\u01b0\u1ee3c \u0111i\u1ec1u tr\u1ecb b\u1eb1ng m\u1eb7t ph\u1eb3ng nghi\u00eang ph\u1ea3i c\u00f3 \u0111\u1ed9 c\u1eafn ph\u1ee7 b\u00ecnh th\u01b0\u1eddng ho\u1eb7c c\u1eafn ph\u1ee7 qu\u00e1 m\u1ee9c. C\u1ea7n c\u00f3 kho\u1ea3ng tr\u1ed1ng th\u00edch h\u1ee3p \u0111\u1ec3 r\u0103ng c\u1eafn ch\u00e9o c\u00f3 th\u1ec3 di chuy\u1ec3n ra ngo\u00e0i. Tr\u01b0\u1eddng h\u1ee3p c\u1eafn ch\u00e9o v\u1edbi c\u00e1c r\u0103ng c\u1eeda \u0111\u1ed1i \u0111\u1ea7u ho\u1eb7c c\u1eafn h\u1edf, kh\u00f4ng n\u00ean ch\u1ec9 \u0111\u1ecbnh m\u1eb7t ph\u1eb3ng nghi\u00eang.<\/p>\n

3. Ph\u00e2n lo\u1ea1i c\u00e1c kh\u00ed c\u1ee5 m\u1eb7t ph\u1eb3ng nghi\u00eang<\/h2>\n

M\u1eb7t ph\u1eb3ng nghi\u00eang c\u01a1 b\u1ea3n<\/strong><\/p>\n

\"\"
H\u00ecnh 1: M\u1eb7t ph\u1eb3ng nghi\u00eang c\u01a1 b\u1ea3n.<\/figcaption><\/figure>\n
\"\"
H\u00ecnh 2: \u0110\u1ed9 d\u1ed1c v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a m\u1eb7t ph\u1eb3ng nghi\u00eang.<\/figcaption><\/figure>\n

M\u1eb7t ph\u1eb3ng nghi\u00eang c\u01a1 b\u1ea3n th\u01b0\u1eddng l\u00e0m b\u1eb1ng nh\u1ef1a, g\u1ed3m hai ph\u1ea7n:<\/p>\n

Ph\u1ea7n th\u1ee9 nh\u1ea5t: ph\u1ee7 to\u00e0n b\u1ed9 m\u1eb7t ngo\u00e0i v\u00e0 m\u1eb7t trong th\u00e2n r\u0103ng c\u00e1c r\u0103ng h\u00e0m d\u01b0\u1edbi, th\u01b0\u1eddng l\u00e0 b\u1ed1n r\u0103ng c\u1eeda h\u00e0m d\u01b0\u1edbi ho\u1eb7c s\u00e1u r\u0103ng tr\u01b0\u1edbc h\u00e0m d\u01b0\u1edbi. N\u1ec1n nh\u1ef1a \u00f4m s\u00e1t c\u1ed5 r\u0103ng, kh\u00f4ng \u0111\u01b0\u1ee3c \u00e9p l\u00ean n\u01b0\u1edbu v\u00e0 kh\u00f4ng h\u1edf c\u1ed5 r\u0103ng. Theo chi\u1ec1u g\u1ea7n xa, nh\u1ef1a kh\u00f4ng \u0111\u01b0\u1ee3c \u00e9p ho\u1eb7c l\u1ea5n l\u00ean r\u0103ng b\u00ean c\u1ea1nh.<\/p>\n

Ph\u1ea7n th\u1ee9 hai: l\u00e0 m\u1ed9t m\u1eb7t ph\u1eb3ng nghi\u00eang 45\u00b0 so v\u1edbi m\u1eb7t ph\u1eb3ng nhai. Chi\u1ec1u tr\u01b0\u1edbc sau c\u1ee7a m\u1eb7t ph\u1eb3ng nghi\u00eang ph\u1ea3i \u0111\u1ee7 d\u00e0i \u0111\u1ec3 r\u0103ng c\u1eafn ch\u00e9o kh\u00f4ng b\u1ecb \u0111\u1ea9y ra sau m\u1eb7t ph\u1eb3ng nghi\u00eang khi hai h\u00e0m c\u1eafn l\u1ea1i v\u00e0 ch\u1ec9 c\u00f3 r\u0103ng c\u1eafn ch\u00e9o ch\u1ea1m m\u1eb7t ph\u1eb3ng nghi\u00eang.<\/p>\n

M\u1eb7t ph\u1eb3ng nghi\u00eang tr\u00ean r\u0103ng h\u00e0m tr\u00ean<\/strong><\/p>\n

\"khi-cu-mat-phang-nghieng-3\"
H\u00ecnh 3: M\u1eb7t ph\u1eb3ng nghi\u00eang g\u1eafn tr\u00ean m\u00e3o r\u0103ng h\u00e0m tr\u00ean (A) v\u00e0 (B).<\/figcaption><\/figure>\n

M\u1eb7t ph\u1eb3ng nghi\u00eang n\u1eb1m \u1edf m\u1eb7t trong r\u0103ng c\u1eeda h\u00e0m tr\u00ean. M\u1eb7t ph\u1eb3ng nghi\u00eang n\u00e0y gi\u00fap r\u0103ng c\u1eeda d\u01b0\u1edbi nghi\u00eang v\u00e0o trong v\u00e0 r\u0103ng c\u1eeda tr\u00ean nghi\u00eang ngo\u00e0i.<\/p>\n

M\u1eb7t ph\u1eb3ng nghi\u00eang theo Oppenheim<\/strong><\/p>\n

M\u1ed9t d\u1ea1ng bi\u1ebfn th\u1ec3 m\u1eb7t ph\u1eb3ng nghi\u00eang c\u1ee7a Oppenheim l\u00e0 m\u1eb7t ph\u1eb3ng nghi\u00eang b\u1eb1ng kim lo\u1ea1i \u0111\u01b0\u1ee3c g\u1eafn trong kh\u1ed1i nh\u1ef1a t\u1ea1i v\u1ecb tr\u00ed r\u0103ng b\u1ecb c\u1eafn ch\u00e9o. Kh\u1ed1i nh\u1ef1a \u00f4m c\u1ea3 c\u00e1c r\u0103ng sau. M\u00e0i th\u1ea5p kh\u1ed1i nh\u1ef1a t\u1eeb t\u1eeb \u0111\u1ec3 ch\u1ec9 c\u00f3 r\u0103ng b\u1ecb c\u1eafn ch\u00e9o ph\u00eda tr\u01b0\u1edbc ch\u1ea1m m\u1eb7t ph\u1eb3ng nghi\u00eang. Khi r\u0103ng c\u1eeda c\u1eafn ch\u00e9o b\u1ecb \u0111\u1ea9y ra tr\u01b0\u1edbc, c\u00e1c r\u0103ng sau l\u1ea1i ch\u1ea1m kh\u1ed1i nh\u1ef1a. Ti\u1ebfp t\u1ee5c m\u00e0i nh\u1ef1a v\u00f9ng r\u0103ng sau \u0111\u1ec3 ch\u1ec9 r\u0103ng c\u1eafn ch\u00e9o ch\u1ea1m m\u1eb7t ph\u1eb3ng nghi\u00eang. C\u1ee9 ti\u1ebfp t\u1ee5c nh\u01b0 v\u1eady cho \u0111\u1ebfn khi r\u0103ng c\u1eafn ch\u00e9o nh\u1ea3y kh\u1edbp ho\u00e0n to\u00e0n. Nh\u01b0 v\u1eady l\u1ef1c t\u00e1c \u0111\u1ed9ng tr\u00ean r\u0103ng c\u1eafn ch\u00e9o kh\u00f4ng qu\u00e1 l\u1edbn \u0111\u1eb7c bi\u1ec7t \u1edf nh\u1eefng r\u0103ng c\u00f3 ch\u00e2n r\u0103ng ch\u01b0a th\u00e0nh l\u1eadp ho\u00e0n to\u00e0n.<\/p>\n

\"khi-cu-mat-phang-nghieng-4\"
H\u00ecnh 4: M\u1eb7t ph\u1eb3ng nghi\u00eang theo Oppenheim.<\/figcaption><\/figure>\n

M\u1eb7t ph\u1eb3ng nghi\u00eang k\u1ebft h\u1ee3p kh\u00ed c\u1ee5 Hawley<\/strong><\/p>\n

\"khi-cu-mat-phang-nghieng-5\"
H\u00ecnh 5: M\u1eb7t ph\u1eb3ng nghi\u00eang k\u1ebft h\u1ee3p kh\u00ed c\u1ee5 Hawley (A) Nh\u00ecn t\u1eeb ph\u00eda b\u00ean, (B) Nh\u00ecn t\u1eeb ph\u00eda nhai.<\/figcaption><\/figure>\n

M\u1ed9t d\u1ea1ng m\u1eb7t ph\u1eb3ng nghi\u00eang kh\u00e1c l\u00e0 m\u1eb7t ph\u1eb3ng nghi\u00eang g\u1eafn tr\u00ean kh\u00ed c\u1ee5 Hawley. Kh\u00ed c\u1ee5 Hawley c\u00f3 m\u00f3c \u1edf r\u0103ng sau v\u00e0 cung m\u00f4i ph\u00eda tr\u01b0\u1edbc. N\u1ec1n nh\u1ef1a ph\u1ee7 l\u00ean c\u1ea3 c\u00e1c r\u0103ng c\u1eeda d\u01b0\u1edbi v\u00e0 t\u1ea1o m\u1ed9t ph\u1eb3ng nghi\u00eang gi\u00fap c\u00e1c r\u0103ng c\u1eeda tr\u00ean tr\u01b0\u1ee3t ra tr\u01b0\u1edbc khi c\u1eafn ch\u1ea1m v\u00e0o m\u1eb7t ph\u1eb3ng n\u00e0y. Trong tr\u01b0\u1eddng h\u1ee3p c\u1eafn ch\u00e9o r\u0103ng tr\u01b0\u1edbc c\u00f3 r\u0103ng c\u1eeda d\u01b0\u1edbi nghi\u00eang ngo\u00e0i, v\u1edbi cung m\u00f4i c\u1ee7a kh\u00ed c\u1ee5 v\u00e0 b\u1eb1ng c\u00e1ch m\u00e0i nh\u1ef1a c\u00f3 th\u1ec3 \u0111\u1ed3ng th\u1eddi gi\u00fap \u00e9p c\u00e1c r\u0103ng d\u01b0\u1edbi nghi\u00eang trong. D\u00f9 bi\u1ebfn th\u1ec3 n\u00e0o \u0111i n\u1eefa, \u0111i\u1ec1u quan tr\u1ecdng khi thi\u1ebft k\u1ebf m\u1eb7t ph\u1eb3ng nghi\u00eang l\u00e0 ch\u1ec9 c\u00f3 r\u0103ng c\u1eafn ch\u00e9o ch\u1ea1m v\u00e0o m\u1eb7t nghi\u00eang m\u00e0 th\u00f4i.<\/p>\n

Ngu\u1ed3n tham kh\u1ea3o: <\/em>S\u00e1ch ch\u1ec9nh h\u00ecnh r\u0103ng m\u1eb7t, kh\u00ed c\u1ee5 th\u00e1o l\u1eafp –\u00a0 B\u1ed9 m\u00f4n Ch\u1ec9nh h\u00ecnh r\u0103ng m\u1eb7t, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Y d\u01b0\u1ee3c TP H\u1ed3 Ch\u00ed Minh<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Ng\u00e0y nay m\u1eb7t ph\u1eb3ng nghi\u00eang \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng nh\u1ef1a t\u1ef1 c\u1ee9ng. M\u1eb7t ph\u1eb3ng nghi\u00eang c\u00f3 th\u1ec3 l\u00e0m tr\u1ef1c ti\u1ebfp tr\u00ean mi\u1ec7ng b\u1ec7nh nh\u00e2n ho\u1eb7c l\u00e0m gi\u00e1n ti\u1ebfp tr\u00ean m\u1eabu h\u00e0m th\u1ea1ch cao. Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c hi\u1ec7n gi\u00e1n ti\u1ebfp qua m\u1eabu h\u00e0m \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn h\u01a1n v\u00ec ti\u1ebft ki\u1ec7m th\u1eddi gian tr\u00ean gh\u1ebf, \u00edt g\u00e2y kh\u00f3 […]<\/p>\n","protected":false},"author":21,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[28,33],"tags":[],"yoast_head":"\n\u0110\u1ea1i c\u01b0\u01a1ng v\u00e0 ph\u00e2n lo\u1ea1i v\u1ec1 d\u1ea1ng kh\u00ed c\u1ee5 m\u1eb7t ph\u1eb3ng nghi\u00eang.<\/title>\n<meta name=\"description\" content=\"B\u00e0i vi\u1ebft n\u00e0y n\u00f3i v\u1ec1 t\u1ed5ng quan v\u1ec1 kh\u00ed c\u1ee5 m\u1eb7t ph\u1eb3ng nghi\u00eang, ch\u1ec9 \u0111\u1ecbnh s\u1eed d\u1ee5ng tr\u00ean l\u00e2m s\u00e0ng v\u00e0 ph\u00e2n lo\u1ea1i ri\u00eang. 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