芒果视频下载

簡介

漁洞(dong)(dong)(dong)(dong)溶洞(dong)(dong)(dong)(dong)位于(yu)(yu)凱里西(xi)面(mian)的漁洞(dong)(dong)(dong)(dong)鄉，是一個天然形成的喀斯特溶洞(dong)(dong)(dong)(dong)，于(yu)(yu)1984年發現開發，目前已經開發了2000米(mi)左右(you)，還有尚未(wei)探明的暗洞(dong)(dong)(dong)(dong)6000余米(mi)。洞(dong)(dong)(dong)(dong)前有小溪，兩岸林木繁茂(mao)，郁郁蔥蔥，分為(wei)6層5廳(ting)8段。洞(dong)(dong)(dong)(dong)內大量(liang)的石鐘乳、石筍、石柱、石花，琳瑯滿(man)目。

CaCO3碳(tan)(tan)(tan)酸(suan)鈣(gai)有(you)(you)(you)這樣一種(zhong)性質：當它遇到(dao)溶(rong)(rong)有(you)(you)(you)CO2的(de)水(shui)(shui)時(shi)就(jiu)會變成(cheng)(cheng)(cheng)可溶(rong)(rong)性的(de)碳(tan)(tan)(tan)酸(suan)氫鈣(gai)[Ca（HCO3）2] CaCO3+CO2+H2O=Ca（HCO3）2 溶(rong)(rong)有(you)(you)(you)碳(tan)(tan)(tan)酸(suan)氫鈣(gai)的(de)水(shui)(shui)如果受熱或遇壓(ya)強突(tu)然(ran)變小時(shi)溶(rong)(rong)在(zai)水(shui)(shui)中的(de)碳(tan)(tan)(tan)酸(suan)氫鈣(gai)就(jiu)會分解(jie)，重(zhong)新變成(cheng)(cheng)(cheng)碳(tan)(tan)(tan)酸(suan)鈣(gai)沉積(ji)下來。同時(shi)放出二氧化碳(tan)(tan)(tan)。 Ca（HCO3）2 =CaCO3↓+CO2↑+H2O 在(zai)自然(ran)界(jie)中不(bu)斷發生上述反應于是就(jiu)形成(cheng)(cheng)(cheng)了溶(rong)(rong)洞(dong)(dong)(dong)中的(de)各種(zhong)景觀(guan)。世(shi)界(jie)上最大的(de)溶(rong)(rong)洞(dong)(dong)(dong)是北(bei)美阿巴拉契亞山(shan)脈(mo)的(de)猛(meng)犸洞(dong)(dong)(dong)，位(wei)于肯(ken)塔基州(zhou)境內(nei)，洞(dong)(dong)(dong)深(shen)64km，所有(you)(you)(you)的(de)岔(cha)洞(dong)(dong)(dong)連起(qi)來的(de)總(zong)長度達250km。洞(dong)(dong)(dong)里寬的(de)地(di)(di)方象廣場，窄的(de)地(di)(di)方象長廊(lang)，高(gao)的(de)地(di)(di)方有(you)(you)(you)30m高(gao)，整個(ge)洞(dong)(dong)(dong)平面上迂回曲(qu)折，垂向(xiang)上可分出三層。雨季，整個(ge)洞(dong)(dong)(dong)內(nei)都有(you)(you)(you)流水(shui)(shui)，成(cheng)(cheng)(cheng)為地(di)(di)下河流在(zai)坡折處河水(shui)(shui)跌落，形成(cheng)(cheng)(cheng)瀑布；旱季，局部(bu)地(di)(di)區有(you)(you)(you)水(shui)(shui)，成(cheng)(cheng)(cheng)地(di)(di)下湖泊，可能還有(you)(you)(you)積(ji)水(shui)(shui)很深(shen)的(de)潭，不(bu)妨稱無(wu)底潭。

形成原因

溶(rong)(rong)(rong)洞(dong)(dong)的(de)(de)(de)(de)(de)(de)形(xing)成(cheng)(cheng)(cheng)是石(shi)(shi)(shi)(shi)(shi)灰巖地(di)區地(di)下水(shui)(shui)(shui)長(chang)期溶(rong)(rong)(rong)蝕的(de)(de)(de)(de)(de)(de)結(jie)果(guo)，石(shi)(shi)(shi)(shi)(shi)灰巖里不(bu)溶(rong)(rong)(rong)性的(de)(de)(de)(de)(de)(de)碳(tan)(tan)酸(suan)(suan)鈣(gai)受水(shui)(shui)(shui)和二(er)氧(yang)化(hua)碳(tan)(tan)的(de)(de)(de)(de)(de)(de)作用能轉化(hua)為微(wei)溶(rong)(rong)(rong)性的(de)(de)(de)(de)(de)(de)碳(tan)(tan)酸(suan)(suan)氫(qing)鈣(gai)。由(you)于石(shi)(shi)(shi)(shi)(shi)灰巖層各部分(fen)(fen)含石(shi)(shi)(shi)(shi)(shi)灰質多少不(bu)同，被(bei)侵蝕的(de)(de)(de)(de)(de)(de)程度(du)不(bu)同，就(jiu)逐漸被(bei)溶(rong)(rong)(rong)解分(fen)(fen)割成(cheng)(cheng)(cheng)互(hu)不(bu)相依(yi)、千姿百態(tai)、陡(dou)峭(qiao)秀麗的(de)(de)(de)(de)(de)(de)山峰和奇異景(jing)觀的(de)(de)(de)(de)(de)(de)溶(rong)(rong)(rong)洞(dong)(dong)。如聞(wen)名(ming)于世的(de)(de)(de)(de)(de)(de)桂林溶(rong)(rong)(rong)洞(dong)(dong)、北京石(shi)(shi)(shi)(shi)(shi)花洞(dong)(dong)，就(jiu)是由(you)于水(shui)(shui)(shui)和二(er)氧(yang)化(hua)碳(tan)(tan)的(de)(de)(de)(de)(de)(de)緩(huan)慢侵蝕而(er)創造出來(lai)的(de)(de)(de)(de)(de)(de)杰作。溶(rong)(rong)(rong)有(you)碳(tan)(tan)酸(suan)(suan)氫(qing)鈣(gai)的(de)(de)(de)(de)(de)(de)水(shui)(shui)(shui)，當從溶(rong)(rong)(rong)洞(dong)(dong)頂(ding)滴到洞(dong)(dong)底時，由(you)于水(shui)(shui)(shui)分(fen)(fen)蒸發或壓強(qiang)減(jian)少，以(yi)及溫度(du)的(de)(de)(de)(de)(de)(de)變化(hua)都會使二(er)氧(yang)化(hua)碳(tan)(tan)溶(rong)(rong)(rong)解度(du)減(jian)小(xiao)而(er)析(xi)(xi)出碳(tan)(tan)酸(suan)(suan)鈣(gai)的(de)(de)(de)(de)(de)(de)沉(chen)淀。這些沉(chen)淀經過千百萬年(nian)的(de)(de)(de)(de)(de)(de)積聚，漸漸形(xing)成(cheng)(cheng)(cheng)了鐘乳(ru)石(shi)(shi)(shi)(shi)(shi)、石(shi)(shi)(shi)(shi)(shi)筍等。如果(guo)溶(rong)(rong)(rong)有(you)碳(tan)(tan)酸(suan)(suan)氫(qing)鈣(gai)的(de)(de)(de)(de)(de)(de)水(shui)(shui)(shui)從溶(rong)(rong)(rong)洞(dong)(dong)頂(ding)上滴落，隨著水(shui)(shui)(shui)分(fen)(fen)和二(er)氧(yang)化(hua)碳(tan)(tan)的(de)(de)(de)(de)(de)(de)揮發，則析(xi)(xi)出的(de)(de)(de)(de)(de)(de)碳(tan)(tan)酸(suan)(suan)鈣(gai)就(jiu)會積聚成(cheng)(cheng)(cheng)鐘乳(ru)石(shi)(shi)(shi)(shi)(shi)、石(shi)(shi)(shi)(shi)(shi)幔、石(shi)(shi)(shi)(shi)(shi)花。洞(dong)(dong)頂(ding)的(de)(de)(de)(de)(de)(de)鐘乳(ru)石(shi)(shi)(shi)(shi)(shi)與地(di)面(mian)的(de)(de)(de)(de)(de)(de)石(shi)(shi)(shi)(shi)(shi)筍連(lian)接起來(lai)了，就(jiu)會形(xing)成(cheng)(cheng)(cheng)奇特的(de)(de)(de)(de)(de)(de)石(shi)(shi)(shi)(shi)(shi)柱。

中國知名溶洞

中國現知最長的溶洞(dong)(dong)是湖北(bei)利(li)川縣騰龍洞(dong)(dong)，長約(yue)40千(qian)米；最深的為貴州水城吳家大(da)洞(dong)(dong)。深430米。 　中國是個(ge)多(duo)溶洞(dong)(dong)的國家，尤以廣西境(jing)內的溶洞(dong)(dong)著稱，如桂(gui)林的七(qi)星巖(yan)、蘆迪巖(yan)等。北(bei)京西南郊周(zhou)口店(dian)附(fu)近的上方山(shan)云水洞(dong)(dong)，深612m，有(you)(you)七(qi)個(ge)“大(da)廳”被(bei)一條窄(zhai)長的“走廊”相連，洞(dong)(dong)的盡頭是一個(ge)碩大(da)的石筍(sun)，美名(ming)十八羅漢，石筍(sun)背(bei)后即是深不(bu)(bu)可及的落水洞(dong)(dong)，也(ye)有(you)(you)一定(ding)規(gui)模。周(zhou)口店(dian)的龍骨洞(dong)(dong)，洞(dong)(dong)雖不(bu)(bu)大(da)，卻(que)是我們(men)老祖(zu)宗的棲身地。