摘要
依据济宁三号煤矿的地质条件和资料,采用有限元数值模拟软件FLAC3D模拟了183下05工作面胶带运输平巷先沿底板掘进,183上07工作面后回采;183下05工作面胶带运输平巷先沿顶板掘进,183上07工作面后回采;183上07工作面先回采,183下05工作面胶带运输平巷沿顶板掘进3种不同的183下05工作面胶带运输平巷布置层位与183上07工作面之间的采掘关系方案,得到了不同采动条件下的巷道围岩应力应变情况。结果表明,方案二胶带运输平巷沿顶板掘进巷道两帮垂直应力和水平应力与方案一相比基本一致,两帮位移量出现一定程度的降低,但是底板底鼓量显著增大。方案三巷道两帮的垂直应力明显大于方案一,顶板下沉和巷道底鼓量均明显增大,两帮最大变形量与方案一区别不大。
According to the actual geological conditions and data of Jining No.3 Mine,finite element numerical simulation software FLAC3 Dwas used to simulate three kinds of excavation and the relationships between roadway layout of low 183-05 work face and upper 183-07 work face：the head gate of low 183-05 work face was mined along the floor first,and then the upper 183-07 work face was mined;the head gate of low 183-05 work face was excavated along the roof first,and then the upper183-07 work face was mined;the upper 183-07 work face was excavated first,and then the head gate of low 183-05 work face was excavated along the roof.The different statuses of stress and strain of surrounding rock had been obtained.The results showed that the change of vertical stress and horizontal stress of head gate of plan No.2 were basically consistent compared to plan No.1,and the amount of displacement of the left and right rib decreased to a certain degree,but the amount of drums on the floor increased significantly.The vertical stress of the left and right rib of plan No.3 was apparently greater than plan No.1,the amount of floor deformation were significantly increased,and the maximum deformation of the left and right rib was not significantly different compared to plan No.1.
作者
蒋金泉
李小裕
张培鹏
丁楠
郑有雷
Jiang Jinquan;Li Xiaoyu;Zhang PeipengI;Ding Nan;Zheng Youlei(State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology,Shandong University of Science and Technology,Taian,Shandong 271000,China;Jining No.3 Mine,Yankuang Group Co.,Ltd.,Jining,Shandong 272171,China)
出处
《中国煤炭》
2018年第9期43-48,53,共7页
China Coal
基金
国家自然科学基金面上项目(51374139
51574155)
泰安市科技发展计划(2015ZC1058)
关键词
数值模拟
顶板掘进
底板掘进
采掘关系
numerical simulation
roof excavation
floor excavation
relations between mining and excavation
