根据岩层能干性特征，五圩矿集区整体结构为两“强”夹一“弱”的 “三明治”岩层结构，以箭猪坡最为典型，赋矿层位为弱能干性泥岩层。通过对箭猪坡矿床脉状矿体构式和平面、剖面矿脉展布特征的观察和分析，判断矿体形成于印支早期脆—韧性逆冲剪切带中，矿脉呈雁列状向深部倾伏，之后受印支晚期断展褶皱和燕山期SN向褶皱叠加、改造，最终使矿脉走向为NNW、剖面呈正“八”字形分布。矿脉直接受脆—韧性逆冲剪切带分布范围的控制。由此推断，具备“三明治”岩层结构的丹池成矿带内，在中间的泥岩层内均可能赋存脆—韧性剪切带控制的脉状矿体。

The structure of rock formation in Wuxu ore-concentrated area likes“sandwich” without the exposed magmatic rocks， ore body is located in the middle of “sandwich”which is mudstone layer.Characteristics of construction of vein and the distribution of veins flat surface and section in Jianzhupo deposit of Wuxu ore field is analyzed and the results show that the ore body is formed in brittle-ductile thrust shear zone in the early phase of Indo-Chinese epoch.Orebody sank in the shape of echelon deeply， thenitwasreformedbytheWuxufaultpropagation fold in the late phase of Indo-Chinese epoch afterwards and SN fold in the phase of Yanshanian， at last its strike is NNWanddistributionlookslikepositively“eight” Chinesecharactersinthesection.The late reformation make sore body attitude of westwing and the core department of anticline uprightly，and ore body of westwing sinking from SW to NE deeply.It’ scontrolled directly by the distribution of right/lefte chelon vein in the early indosinian brittle-ductilethrustshearzone.Itconcludesthattherockstratahavea “sandwich” intheNandan-Hechimetallogenicbelt， arelikely tooccurbrittle-ductileshearbeltwhichcontrolveinorebody.