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长山矿区地处四川盆地威远背斜构造西南边缘,铁山背斜北东端之北翼,东为双古背斜,是北东向构造线转为南北向的变化地带。区内产状平缓,地层倾向北西,倾角3—6度。尚未发现断层切割盐岩层。含盐系剖面特征:区内揭露单一岩盐层,呈层状产出,岩盐层最大厚度26.68米,最小厚度8.44米(铁34井除外),一般厚度11—16米。矿体埋深820—1030米,矿石品位氯化钠含量92—95％,产于
The Changshan Mine is located in the southwestern margin of the Weiyuan anticline in the Sichuan Basin. The north wing of the northern east end of the Tieshan anticline and the double antiquity anticline in the east are the changing areas of the NE-trending tectonic line into a north-south direction. The shape of the area is gentle, the strata tends to be northwest and the dip angle is 3-6 degrees. No fault-cut salt rock formation has been found. Characteristics of salt-bearing sections: A single rock salt layer is exposed in the area and is layered. The maximum thickness of rock salt layer is 26.68 meters and the minimum thickness is 8.44 meters (except for iron well 34), with a general thickness of 11-16 meters. Depth of ore body 820-1030 meters, the grade of sodium chloride content of 92-95%, produced