淮南潘集一矿11-2煤层层间滑动构造研究

Study on Characteristics and Types of Seam-gliding Structure of Coal Seam 11-2 in Huainan Panji No.1 Coal Mine

潘集一矿11-2煤层间滑动构造发育,层滑构造特征表现为顶底板揉皱楔入煤层中使得煤层破碎,煤质变差,顶底板凹凸变化。煤层厚度变化大,稳定性差,薄煤带发育。矿区层滑构造主要分布于中西区浅及中深部位置,对煤层厚度影响较大。为了探明矿区层滑构造的成因机理,对矿区层滑构造特征及其类型进行了研究。结果表明:潘集一矿11-2煤层滑构造主要表现形式为断裂式层间滑动,说明矿区层滑构造主要是受矿区断层的牵引作用所致。将11-2煤层滑构造分为揉皱型、断滑型和断裂型,矿区西部层滑构造主要表现为断裂型和断滑型,中部主要表现为揉皱型和断裂型,东部未开采区主要表现为断滑型,为矿区生产部署提供了参考依据。

The seam-gliding structures in Panji No. 1 Coal Mine are intensively developed. Coal seams are broken by wedging of corrugated rocks in roof and floor. Coal quality deteriorated. Roof and floor present concave and convex changes. Thickness of coal seams varies greatly and thin coal seams dominates. The seam-gliding structures mainly distribute at small and medium depth in the middle and west part of the mining area, which has great influences on thickness changes of the coal seams. In order to obtain the mechanism of seam-gliding structure formation, characteristics and types of seam-gliding structures were studied. The results showed that the main seam-gliding structures belong to fracture seam-gliding structure, mainly caused by traction of faults. Therefore, the seam-gliding structures of coal seam 11-2 in Panji No. 1 Coal Mine are divided into corrugation structure, fault sliding structure and fracture structure. In the west part of the mining area seam-gliding structures mainly occur as fracture and fault sliding structure, in the middle part as corrugation and fracture structure, and in the east part as fault sliding structure. The results provide references to coal mine production.