《四(si)川省威西(xi)鹽(yan)礦》是中國新星石(shi)油(you)公司西(xi)南(nan)石(shi)油(you)局第二地質大隊為主要(yao)研究單位,王華(hua)榮、李(li)蔭(yin)、許祖(zu)霖、林傳律、徐廷諒、胡建中、盧(lu)華(hua)勛、林躍庭(ting)、殷仲達為主要(yao)完成人(ren)的科研項目。
威(wei)西(xi)(xi)(xi)鹽(yan)(yan)(yan)(yan)(yan)礦(kuang)(kuang)(kuang)(kuang)位于(yu)四川(chuan)盆地(di)西(xi)(xi)(xi)南部的(de)(de)(de)榮縣、井(jing)研(yan)、樂(le)山、犍為(wei)四縣(市)境內,面積801平方公(gong)里(li)。區(qu)內地(di)表出(chu)露(lu)地(di)層(ceng)(ceng)(ceng)主要(yao)為(wei)侏羅—白堊系(xi)(xi)(xi)(xi),三疊系(xi)(xi)(xi)(xi)上(shang)統(tong)為(wei)含(han)(han)煤碎(sui)屑巖(yan)(yan)(yan),中統(tong)雷口坡組(zu)(zu)(zu)和(he)嘉陵江組(zu)(zu)(zu)由(you)碳(tan)酸巖(yan)(yan)(yan)和(he)膏(gao)鹽(yan)(yan)(yan)(yan)(yan)蒸發巖(yan)(yan)(yan)組(zu)(zu)(zu)成。雷口坡組(zu)(zu)(zu)第(di)三段為(wei)主要(yao)含(han)(han)鹽(yan)(yan)(yan)(yan)(yan)系(xi)(xi)(xi)(xi)。礦(kuang)(kuang)(kuang)(kuang)床(chuang)構造簡(jian)單,總體為(wei)向北西(xi)(xi)(xi)傾斜的(de)(de)(de)單斜層(ceng)(ceng)(ceng),傾角3—5°。含(han)(han)鹽(yan)(yan)(yan)(yan)(yan)系(xi)(xi)(xi)(xi)結構簡(jian)單,層(ceng)(ceng)(ceng)序清晰,厚(hou)度(du)(du)(du)為(wei)253.24—298.7米。根據(ju)含(han)(han)鹽(yan)(yan)(yan)(yan)(yan)層(ceng)(ceng)(ceng)結構特征(zheng),劃分(fen)為(wei)上(shang)、中、下三個鹽(yan)(yan)(yan)(yan)(yan)組(zu)(zu)(zu),各(ge)鹽(yan)(yan)(yan)(yan)(yan)組(zu)(zu)(zu)由(you)石(shi)(shi)(shi)(shi)(shi)灰巖(yan)(yan)(yan),各(ge)鹽(yan)(yan)(yan)(yan)(yan)組(zu)(zu)(zu)由(you)石(shi)(shi)(shi)(shi)(shi)灰巖(yan)(yan)(yan)—石(shi)(shi)(shi)(shi)(shi)鹽(yan)(yan)(yan)(yan)(yan)巖(yan)(yan)(yan)或灰巖(yan)(yan)(yan)—硬(ying)(ying)石(shi)(shi)(shi)(shi)(shi)膏(gao)巖(yan)(yan)(yan)組(zu)(zu)(zu)成。威(wei)西(xi)(xi)(xi)巖(yan)(yan)(yan)鹽(yan)(yan)(yan)(yan)(yan)體南北長40公(gong)里(li),東西(xi)(xi)(xi)寬30公(gong)里(li),屬特大型的(de)(de)(de)層(ceng)(ceng)(ceng)狀礦(kuang)(kuang)(kuang)(kuang)床(chuang)。鹽(yan)(yan)(yan)(yan)(yan)層(ceng)(ceng)(ceng)厚(hou)度(du)(du)(du)穩定,平均(jun)(jun)厚(hou)12.8米,厚(hou)度(du)(du)(du)變化(hua)系(xi)(xi)(xi)(xi)數約為(wei)31%。礦(kuang)(kuang)(kuang)(kuang)石(shi)(shi)(shi)(shi)(shi)礦(kuang)(kuang)(kuang)(kuang)物組(zu)(zu)(zu)合及化(hua)學(xue)組(zu)(zu)(zu)份均(jun)(jun)較簡(jian)單,礦(kuang)(kuang)(kuang)(kuang)物以石(shi)(shi)(shi)(shi)(shi)鹽(yan)(yan)(yan)(yan)(yan)為(wei)主,次為(wei)硬(ying)(ying)石(shi)(shi)(shi)(shi)(shi)膏(gao),另(ling)有(you)(you)少(shao)量的(de)(de)(de)云石(shi)(shi)(shi)(shi)(shi)、云解(jie)石(shi)(shi)(shi)(shi)(shi)及菱鎂礦(kuang)(kuang)(kuang)(kuang)等。礦(kuang)(kuang)(kuang)(kuang)石(shi)(shi)(shi)(shi)(shi)主要(yao)化(hua)學(xue)成分(fen),為(wei)NaCl,其(qi)平均(jun)(jun)含(han)(han)量均(jun)(jun)大于(yu)93%,品位變化(hua)系(xi)(xi)(xi)(xi)數僅1.2%,CaSo4含(han)(han)量小于(yu)5%,其(qi)它有(you)(you)害雜質(zhi)含(han)(han)量極微(wei),均(jun)(jun)未超過(guo)食用鹽(yan)(yan)(yan)(yan)(yan)標準(zhun),不足的(de)(de)(de)是礦(kuang)(kuang)(kuang)(kuang)石(shi)(shi)(shi)(shi)(shi)不含(han)(han)碘。礦(kuang)(kuang)(kuang)(kuang)石(shi)(shi)(shi)(shi)(shi)工業品級全為(wei)I品級,加工技術性能簡(jian)單,可溶性好,有(you)(you)利于(yu)水(shui)溶法(fa)開采。威(wei)西(xi)(xi)(xi)鹽(yan)(yan)(yan)(yan)(yan)礦(kuang)(kuang)(kuang)(kuang)自(zi)開發以來已(yi)生(sheng)產(chan)鹵鹽(yan)(yan)(yan)(yan)(yan)2000多(duo)萬噸,創產(chan)值(zhi)40多(duo)億元,利稅近20億元,效益巨大。