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Coal Engineering ›› 2025, Vol. 57 ›› Issue (10): 46-52.doi: 10.11799/ce202510006

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Anti-scour mechanism and effect analysis of ground fracturing in gob-side working face

  

  • Received:2025-07-15 Revised:2025-08-11 Online:2025-10-10 Published:2025-11-12

Abstract:

In order to further explore the influence of ground fracturing measures on the impact risk of gob-side working face and the anti-impact mechanism. Taking the 20103 working face of a mine in Shaanxi Province as the engineering background, the anti-impact mechanism and its control effect of ground fracturing measures between two adjacent working faces to reduce the impact risk during the mining of the upper working face and the lower working face were studied by means of theoretical analysis and field detection. The following conclusions are drawn : the implementation of ground fracturing measures between two adjacent working faces can reduce the mechanical properties of the rock strata as a unified whole before the mining of the upper working face, thus reducing the overall static load below the fracturing area. When mining in the lower working face, the surrounding rock of the roadway along the goaf is in a relatively low static load stress environment, and because of the decrease of the length of the lateral cantilever after the implementation of ground fracturing, the dynamic load energy from the fault zone is greatly reduced, and the impact risk caused by the superposition of dynamic and static loads is significantly reduced. In the actual lateral hanging roof detection process, the lateral cantilever structure of the fractured area and the unfractured area is obtained. The comparison results show that the ground fracturing effect is good, the weakening degree of the lateral cantilever is high, and the long arm is effectively realized. The implementation of ground fracturing has a good effect on reducing the impact risk of the working face along the goaf, which can provide reference for the prevention and control of rock burst in the working face along the goaf of the same type of mine.

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