Curved fold-and-thrust belt (CFTB) is a common structural phenomenon in orogenic belts and accretionary wedges, which has attracted the attention of several geologists. However, the formation mechanism of CFTB, particularly the cause of Pamir salient, has been greatly controversial. Therefore, based on previous studies, CFTB was studied by 12 groups of analogue modeling using the different shapes of the backstop and variable basal friction properties, and different compression velocities. The results show that the formation of CFTB is closely associated with the initial geometric characteristics of CFTB, the strength of the basal ductile layer, and the influence of lateral friction. Although the variation in backstop geometries is dominated by the pure Coulomb wedge, CFTB with completely different structural styles can form because of different boundary shapes. The CFTB formed by lower basement friction strength has a larger deformation range, and the CFTB formed by high strength of basal friction, which is narrow, has a high uplift amplitude, forming a tensile structure around its uplift. A high compressional rate forms the higher arc curvature, and a lower compressional rate forms the smaller arc curvature. Models of a brittle basement with triangular backstop and models with ductile basement and boundary parallel to the compression direction may provide a more reliable explanation for the formation of the forward thrust, backward thrust, and symmetrical pop-up structures of the Pamir salient and its structural vergence from south to north. This study further reveals that initial boundary geometry, stratigraphic structure, and rheology with a difference in brittle and ductile layers will yield more complex structural styles and different kinematic characteristics.

弯曲褶皱逆冲带（CFTB）是造山带和增生楔中常见的构造现象，引起了多位地质学家的关注。然而，CFTB的形成机制，尤其是帕米尔突出的成因，一直存在很大争议。因此，在前人研究的基础上，采用不同形状的逆止器和可变的基础摩擦特性，以及不同的压缩速度，对 CFTB 进行了 12 组模拟建模研究。结果表明，CFTB的形成与CFTB的初始几何特征、基底韧性层的强度以及侧向摩擦的影响密切相关。虽然逆止器几何形状的变化主要由纯库仑楔形，由于边界形状不同，可以形成结构风格完全不同的CFTB。基底摩擦强度较低形成的CFTB变形范围较大，基底摩擦强度高形成的CFTB较窄，抬升幅度大，在其抬升周围形成张拉结构。高压缩率形成较高的弧曲率，而较低的压缩率形成较小的弧曲率。具有三角形逆止器的脆性基底模型和具有与压缩方向平行的延性基底和边界的模型可以为帕米尔凸起及其构造的前冲、后冲和对称弹出结构的形成提供更可靠的解释。从南到北的趋同。这项研究进一步揭示了初始边界几何，