The anomaly of the ground magnetic survey was applied to partition testing of statistical hypothesis in this paper. According to demarcation point judged by both the value of Vk and V (Ta,Ta+1), which should be larger than the value of X g,m2 , combined with the characteristics of magnetic anomaly and geological data, this paper infers the boundary of fault structure and obtains more satisfactory results.%本文介绍利用地面磁测异常进行统计假设分区检验，依据Vk值和V（Ta，Ta+1）值都大于临界值Xg,m2的分界点，结合磁异常特征、地质资料对比分析，推断出断裂构造的分界线，获得了较为满意的效果。
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