Developing law of sliding ground fissures based on numerical simulation using UDEC

作者：Liu Hui; Liu Xiao Yang; Deng Ka Zhong^*; Lei Shao Gang; Bian Zheng Fu

来源：Journal of China Coal Society, 2016, 41(3): 625-632.

DOI：10.13225/j.cnki.jccs.2015.0454

• Fissure angle
• Hilly areas
• Mining areas
• Sliding ground
• UDEC

In order to study the developing law of sliding ground fissures caused by underground mining in the western loess hilly mining area of China, the definition and basic features of sliding ground fissures were given firstly in this paper. The dynamic developing model, gully gradient model, and gully position model were established using the UDEC numerical simulation software. Then, the dynamic developing law of sliding ground fissures was analyzed, the relationship between sliding ground fissures and gully was studied, and the reliability of models was validated through the engineering example at the 52304 working face in Daliuta Coal Mine, China. The results show that: (1) The development of sliding ground fissures could be divided into four periods, such as the accumulation period, the formation period, the dynamic developing period, and the stabilization period. (2) The relationship between sliding fissure angle and gully gradient was the quadratic polynomial equation, and the relationship between sliding fissure angle and gully position was the linear equation. (3) The engineering example showed that the maximum relative error between the calculated values and the measured values of sliding ground fusser angle is 3.4%, which proves the prediction on the position of sliding ground fissure using this model is feasible.

• 出版日期2016
• 单位中国矿业大学（北京）; 安徽大学