川南地区经历了多期多阶段的构造变形事件，形成了多期构造复合-联合的叠加构造变形带，并伴生着较为发育的裂缝网络体系。为了定量化表征永川地区的构造变形强度，通过提取永川地区裂缝数据，基于拓扑结构分析的方法，运用了裂缝线密度、裂缝连通率两项拓扑指标对永川地区的构造变形强度进行了量化。并对量化评价结果与页岩气井产量进行相关性分析，相关性分析结果显示裂缝线密度的数值在0 ~ 0.986 × 10^-3的区间范围内，裂缝线密度与页岩气井产量强正相关，即裂缝网络体系越发育，页岩气产量越高，超过0.986 × 10^-3并在0.986 × 10^-3 ~ 1.342 × 10^-3区间内某一点开始，过于发育的裂缝网络体系反而致使页岩气产量降低。而裂缝连通率数值与页岩气井产量呈弱的负相关，即裂缝连通率数值越高，页岩气产量越低。

The Southern Sichuan region has been subjected to multiple phases and stages of tectonic deformation events, resulting in the formation of a complex and jointed superimposed tectonic deformation zone, accompanied by a well-developed fracture network system. In order to quantitatively characterize the tectonic deformation intensity in the Yongchuan area, fracture data from the region were extracted. Utilizing topological structure analysis methods, topological indices such as fracture line density and fracture connectivity were applied to quantify the tectonic deformation intensity. Correlation analysis between the quantitative evaluation results and shale gas well productivity was conducted. The analysis indicated that values of fracture line density ranged between 0 and 0.986 × 10^-3, showing a strong positive correlation with shale gas well productivity; that is, the more developed the fracture network system, the higher the shale gas production. However, at the threshold exceeding 0.986 × 10^-3 and within the range of 0.986 × 10^-3 to 1.342 × 10^-3, an overly developed fracture network system was found to reduce shale gas production. Meanwhile, fracture connectivity exhibited a weak negative correlation with shale gas productivity, indicating that higher fracture connectivity corresponds to lower shale gas production.