Study on stress distribution characteristics and protective measures of near goaf roadway excavation
Song Haibao1, Chen Senjun2
1. Xiaoyun Mine of Jining Mining Group Co., Ltd., Jining 273513, China; 2. College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China
In order to analyze the influence of lateral abutment pressure of goaf to No.2307 Face of Xiaoyun Mine, a 3D numerical model was constructed by using FLAC3D numerical simulation software, and the distribution characteristics of coal pillar stress were analyzed. The results showed that the No.2307 track roadway was mainly affected by the lateral abutment pressure of No.1308 goaf during excavation, but the stress concentration coefficient was less than 1.5 in the area where the lateral abutment pressure of No.1308 goaf was reduced. Subsequently, large-diameter drilling was adopted to prevent rock surge, and realized the safe excavation of No.2307 track finally.
宋海宝1，陈森军2. 临空巷道掘进应力分布特征及防护措施研究[J]. 煤炭与化工, 2025, 48(3): 8-11，16..
Song Haibao1, Chen Senjun2. Study on stress distribution characteristics and protective measures of near goaf roadway excavation. CCI, 2025, 48(3): 8-11，16..
