：随着我国页岩气勘探开发的不断深入，构造复杂区已成为下一步勘探的重要方向。以渝东北复杂构造区龙马溪组页岩为例，开展了扫描电镜、压汞、低压气体吸附、等温吸附等试验，系统性地表征了渝东北地区不同构造变形带龙马溪组孔隙结构及吸附特征，分析了复杂构造区页岩孔隙结构和吸附特征的影响因素，阐明了构造变形对于孔隙结构和吸附能力的作用机制。结果表明：① 滑脱褶皱带和断层褶皱带龙马溪组页岩中发育较多的有机质孔，而叠瓦断层带龙马溪组页岩仅发育少量有机质孔隙，但发育更多矿物相关的孔裂隙；② 滑脱褶皱带龙马溪组页岩中微孔（< 2 nm）、介孔（2~50 nm）及宏孔（> 50 nm）均有发育，而断层褶皱带和叠瓦状冲断带龙马溪组页岩样品中微孔不是很发育，而介孔和宏孔相对比较发育；③ 龙马溪组页岩“过剩”吸附量都是随着压力的增大迅速增加，达到最大值（ 6~9 MPa）后开始缓慢降低，而绝对吸附量则随着压力的增大单调增大；④ 孔隙结构主要受控于TOC（总有机碳）和黏土矿物含量，而吸附能力主要与TOC 和微孔密切相关，此外，构造变形也可以通过改造孔隙结构来影响吸附能力。该研究成果为复杂构造区页岩气勘探提供了理论依据。

With the continuous exploration and development of shale gas in China, the complex structure area has become an important direction for further exploration. The Longmaxi shale samples collected from complex structure area in Northeast Chongqing were conducted scanning electron microscopy, mercury intrusion, low-pressure gas adsorption, isothermal adsorption. This study systematically characterized the pore structure and adsorption capacity of Longmaxi shale in different tectonic belts, analyzed the influencing factors of pore structure and adsorption capacity, and revealed the action mechanism of tectonic deformation on pore structure and adsorption capacity. The results showed that ① OM pores are relatively developed in the Longmaxi shales collected from thrust slip belt and thrust fold belt, but not in the Longmaxi shale from imbricate thrust belt, where mineral-related pores and fractures are mainly developed. ② Micropores (<2 nm), mesopores (2~50 nm) and macropores (>50 nm) are developed in the Longmaxi shale in the thrust slip belt, while mesopores and macropores are relatively developed in the thrust fold belt and imbricate thrust belt. ③ The “excess” adsorption capacity of Longmaxi shale rapidly increases with the increased pressure, and slowly decreases after reaching the maximum (6−9 MPa), while the absolute adsorption capacity monotonously increases with the increased pressure. ④ The pore structure is mainly controlled by TOC (Total Organic Carbon) and clay mineral content, and the adsorption capacity is closely related to TOC and micropores. In addition, tectonic deformation can also affect the adsorption capacity by modifying the pore structure. This study has a very important guiding significance for the evaluation and development of shale gas resources in complex tectonic areas.