Through an exploratorysurvey of residual deposit in the sourthern zone of a copper ore mine, inclined thin veins with difficult occurrence and complicated mining conditions were discovered.
Methods: Using an online questionnaire survey to collect 263 valid questionnaires, exploratory factor analysis and multiple linear regression analysis were used for data analysis.
方法：通过问卷调查法搜集了263份有效问卷，采用探索性因子分析法和多元线性回归分析进行数据分析。
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At present, the national land resources survey project evaluation hasn't perfect evaluation method and evaluation system, and is still in the exploratory stage.