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涟源凹陷西部逆冲推覆构造和重力滑动构造并存，前者表现为逆冲叠瓦扇，其主干断层向下收敛于加里东不整合面附近，总体沿加里东不整合面向西逆冲推覆，后者则表现为滑片型和滑福型两类，总体向东滑动。上述滑脱构造对煤层结构和煤厚变化具有明显的影响，它使煤层原生结构破坏形成各种构造煤，并导致煤层厚度重新分配，形成ＮＥ－ＮＮＥ向展布的厚薄煤带。
In the western Lianyuan sag, the thrust nappe structure coexisted with the gravitational sliding structure. The former was represented by a thrust shoal tile fan. Its main fault converged downward to the vicinity of the Caledonian unconformity and was generally thrust along the Caledonian unconformity , While the latter showed two types of sliding type and sliding type, sliding eastward. The above-mentioned slippage structure has a significant influence on the coal seam structure and coal thickness variation. It causes the destruction of the original coal seam structure to form various tectonic coal and leads to the redistribution of the coal seam thickness to form the thick coal belt with the NE-NNE direction.