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建矿以来,我们在开发四川威西岩盐矿中,由于不断改进生产工艺技术,产量逐年增加,卤水浓度逐步提高。至82年止,已累计采卤折盐370余万吨,卤水平均浓度303.95克/升,这是由于井矿盐开采工艺技术不断发展的结果。但必须指出,井下溶洞垮塌,是现在影响正常生产的普遍现象。由于这种垮塌现象发生在井下深处,不易被人观察到和引起重视,研究和分析井下溶洞垮塌原因,具有较重要的意义。
Since the establishment of the mine, we have been developing the Weixiyan Salt Mine in Sichuan Province. Due to the continuous improvement of the production technology, the output has been increasing year by year and the concentration of brine has gradually increased. By the end of 1982, a total of more than 3.7 million tons of brine and salt had been accumulated and the average brine concentration was 303.95 grams / liter, which was attributed to the continuous development of well and salt mining technology. However, it must be pointed out that the collapse of underground caves is now a common phenomenon that affects normal production. Because this kind of collapsing occurs deep underground, it is hard to be observed and taken seriously. Therefore, it is of great importance to study and analyze the causes of underground cave collapse.