![\"\u0110\u1ed9ng](\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/dong_luc_hoc_chat_luu_trong_cac_vu_phun_trao_nui_lua.png\")
<\/p>\n\u0110\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u01b0u trong c\u00e1c v\u1ee5 phun tr\u00e0o n\u00fai l\u1eeda: Kh\u00e1m ph\u00e1 c\u00e1ch ch\u1ea5t l\u01b0u v\u1eadn \u0111\u1ed9ng, t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng v\u00e0 an ninh qua c\u00e1c v\u1ee5 phun tr\u00e0o n\u00fai l\u1eeda.<\/p>\n
<\/p>\n
\u0110\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u01b0u (Fluid dynamics) l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c quan tr\u1ecdng trong ng\u00e0nh nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc, v\u00e0 n\u00f3 \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c hi\u1ec3u qu\u00e1 tr\u00ecnh phun tr\u00e0o n\u00fai l\u1eeda. Khi m\u1ed9t ng\u1ecdn n\u00fai l\u1eeda phun tr\u00e0o, c\u00e1c v\u1eadt ch\u1ea5t n\u00f3ng ch\u1ea3y, kh\u00ed v\u00e0 tro b\u1ee5i \u0111\u01b0\u1ee3c \u0111\u1ea9y l\u00ean t\u1eeb d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t v\u00e0 gi\u1ea3i ph\u00f3ng v\u00e0o kh\u00f4ng kh\u00ed. Qu\u00e1 tr\u00ecnh n\u00e0y ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec1u y\u1ebfu t\u1ed1 li\u00ean quan \u0111\u1ebfn \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u01b0u.<\/p>\n
Khi n\u00fai l\u1eeda phun tr\u00e0o, dung nham v\u00e0 kh\u00ed n\u00fai l\u1eeda s\u1ebd tho\u00e1t ra kh\u1ecfi mi\u1ec7ng n\u00fai l\u1eeda. Dung nham l\u00e0 m\u1ed9t lo\u1ea1i ch\u1ea5t l\u1ecfng n\u00f3ng ch\u1ea3y ch\u1ee9a h\u1ed7n h\u1ee3p c\u1ee7a c\u00e1c kho\u00e1ng ch\u1ea5t v\u00e0 kim lo\u1ea1i. Kh\u00ed n\u00fai l\u1eeda, nh\u01b0 h\u01a1i n\u01b0\u1edbc (H2<\/sub>O), carbon dioxide (CO2<\/sub>), sulfur dioxide (SO2<\/sub>), v\u00e0 hydrogen sulfide (H2<\/sub>S), c\u0169ng l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh n\u00e0y.<\/p>\n \u00c1p su\u1ea5t d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t t\u00edch t\u1ee5 khi magma d\u00e2ng l\u00ean \u0111\u1ebfn b\u1ec1 m\u1eb7t. \u00c1p su\u1ea5t n\u00e0y t\u1ea1o ra l\u1ef1c \u0111\u1ea9y \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 phun tr\u00e0o dung nham v\u00e0 kh\u00ed ra ngo\u00e0i. T\u1ed1c \u0111\u1ed9 phun tr\u00e0o c\u00f3 th\u1ec3 r\u1ea5t kh\u00e1c nhau, t\u1eeb vi\u1ec7c dung nham ch\u1ea3y ch\u1eadm r\u00e3i \u0111\u1ebfn c\u00e1c v\u1ee5 n\u1ed5 kh\u00ed m\u1ea1nh m\u1ebd v\u00e0 b\u1ea1o li\u1ec7t.<\/p>\n Nguy\u00ean l\u00fd Bernoulli l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u01b0u, ph\u00e1t bi\u1ec3u r\u1eb1ng khi t\u1ed1c \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u01b0u t\u0103ng, \u00e1p su\u1ea5t c\u1ee7a n\u00f3 s\u1ebd gi\u1ea3m. C\u00f4ng th\u1ee9c c\u1ee7a nguy\u00ean l\u00fd Bernoulli \u0111\u01b0\u1ee3c vi\u1ebft nh\u01b0 sau:<\/p>\n \n\\( \u1ede \u0111\u00e2y:<\/p>\n Trong tr\u01b0\u1eddng h\u1ee3p phun tr\u00e0o n\u00fai l\u1eeda, v\u1eadn t\u1ed1c cao c\u1ee7a dung nham v\u00e0 kh\u00ed l\u00e0m gi\u1ea3m \u00e1p su\u1ea5t tr\u00ean b\u1ec1 m\u1eb7t, d\u1eabn \u0111\u1ebfn s\u1ef1 phun tr\u00e0o m\u1ea1nh m\u1ebd.<\/p>\n Hi\u1ec3u r\u00f5 \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u01b0u trong c\u00e1c v\u1ee5 phun tr\u00e0o n\u00fai l\u1eeda kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta d\u1ef1 b\u00e1o ch\u00ednh x\u00e1c h\u01a1n th\u1eddi \u0111i\u1ec3m v\u00e0 m\u1ee9c \u0111\u1ed9 c\u1ee7a phun tr\u00e0o, m\u00e0 c\u00f2n gi\u00fap gi\u1ea3m thi\u1ec3u thi\u1ec7t h\u1ea1i cho con ng\u01b0\u1eddi v\u00e0 m\u00f4i tr\u01b0\u1eddng. C\u00e1c nh\u00e0 khoa h\u1ecdc s\u1eed d\u1ee5ng d\u1eef li\u1ec7u v\u1ec1 \u00e1p su\u1ea5t, nhi\u1ec7t \u0111\u1ed9, v\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a magma \u0111\u1ec3 m\u00f4 ph\u1ecfng v\u00e0 d\u1ef1 b\u00e1o c\u00e1c tr\u01b0\u1eddng h\u1ee3p phun tr\u00e0o.<\/p>\n \u0110\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u01b0u l\u00e0 m\u1ed9t kh\u00eda c\u1ea1nh quan tr\u1ecdng c\u1ee7a ng\u00e0nh nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc, gi\u00fap gi\u1ea3i th\u00edch v\u00e0 d\u1ef1 b\u00e1o c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u1ecba ch\u1ea5t nh\u01b0 phun tr\u00e0o n\u00fai l\u1eeda. Hi\u1ec3u bi\u1ebft s\u00e2u v\u1ec1 qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng ch\u1ec9 c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 m\u1eb7t h\u1ecdc thu\u1eadt m\u00e0 c\u00f2n mang l\u1ea1i l\u1ee3i \u00edch to l\u1edbn cho cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng.<\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u01b0u trong c\u00e1c v\u1ee5 phun tr\u00e0o n\u00fai l\u1eeda: Kh\u00e1m ph\u00e1 c\u00e1ch ch\u1ea5t l\u01b0u v\u1eadn \u0111\u1ed9ng, t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng v\u00e0 an ninh qua c\u00e1c v\u1ee5 phun tr\u00e0o n\u00fai l\u1eeda.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"\n\u00c1p su\u1ea5t v\u00e0 t\u1ed1c \u0111\u1ed9 phun tr\u00e0o<\/h2>\n
Nguy\u00ean l\u00fd Bernoulli \u00e1p d\u1ee5ng trong phun tr\u00e0o n\u00fai l\u1eeda<\/h2>\n
\nP + 0.5 \\rho v^2 + \\rho gh = \\text{constant}
\n\\)\n<\/p>\n\n
\u1ee8ng d\u1ee5ng v\u00e0 d\u1ef1 b\u00e1o<\/h2>\n
K\u1ebft lu\u1eadn<\/h2>\n