The geology and mining condition of deposits is complicated in Daling Mine, it is one of most difficulty are bodies for mining in China.
大岭矿矿床地质及开采技术条件复杂，是国内有色矿山少有的难采矿体。
Because of the mining condition of ore belt of southern edge in Fengshan Copper Mine is more complicated, the originally used sublevel caving method in the production have obvious shortcomings.
丰山铜矿南缘矿带开采技术条件复杂，原采用的无底柱分段崩落法在生产中存在较大问题。
The deformation law of roadways under the condition of mining in strips is very complicated and much different from those under condition of non-strip mining.
条带开采条件下巷道的变形规律非常复杂，其变形规律同非条带开采的巷道有较大的差别。
The geological condition is quite complicated in mining engineering belong to Jinchuan Corporation, and out of control of blasting may cause severe consequence.
金川公司所属矿山工程地质条件十分复杂，爆破失控会带来严重后果。
The geological condition is quite complicated in mining engineering belong to Jinchuan Corporation, and out of control of blasting may cause severe consequence.
金川公司所属矿山工程地质条件十分复杂，爆破失控会带来严重后果。
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