对安徽淮南煤田南北缘 3条主要断裂 (舜耕山断裂、阜凤断裂、尚塘集断裂 )分带性的野外观察和室内化学成分测定结果表明 :由断裂带外围原岩至断裂带中心的化学组分如SiO2 、Al2 O3 、CaO、MgO、TiO2 的含量、灼失量等表现为渐次递增或递减的趋势 ;而Na2 O、K2 O、Fe2 O3 的含量等则呈现单峰或双峰、多峰的变化。这些特点不仅与构造岩本身的组分有关 ,而且也与断裂的力学性质、风化程度等因素有关 ,反映了 3条断裂均是在压应力作用下形成的压性断裂 ,且 3条断裂都处于晚期的演化阶段。淮南煤田南缘断裂带中应力矿物的形成以及南北缘断裂带中Fe2 O3 含量的变化特点 ,说明淮南煤田南缘的断裂较之北缘断裂的生成深度大 ,且滑脱距离远 The field observations and laboratory chemical compositions of the three major faults (Shungengshan fault, Fufeng fault and Shangtangji fault) on the southern and northern edge of Huainan coalfield in Anhui Province show that the chemical composition of the chemical from the original rock in the periphery of the fault zone to the center of the fault zone The content of components such as SiO2, Al2O3, CaO, MgO, TiO2 and the loss on ignition showed a trend of gradual increase or decrease; while the content of Na2 O, K2 O and Fe2 O3 showed single or double peak, Changes in the peak. These features are not only related to the composition of the tectonic rocks, but also to the mechanical properties of fractures and the degree of weathering. All these three fractures are all compressive fractures formed under compressive stress and all three fractures are at Late evolution stage. The formation of stress minerals in the southern margin of Huainan coalfield and the variation of Fe 2 O 3 content in the southern and northern margin faults show that the southern margin of Huainan coalfield is larger in depth than the northern margin and has a long distance