摘要
为了研究采动动压影响下断层面附近的矿压规律,根据朝阳煤矿3101东工作面地质资料和开采技术条件,在几何比为1∶100的条件下制作了3m×0.3m×1.8m的相似模拟材料,布设位移基点和压力传感器进行相似模拟研究。实验结果表明:工作面由下盘向上盘推进过程中,直接顶的周期突变失稳步距为30m,基本顶的垮落周期为60m,工作面超前支撑压力的影响范围为40 m,最大支撑压力值为45.1 MPa,应力集中系数为3.0,实验结果及过程对现场实际施工具有重要的指导意义。
In order to study the strata behavior nearby fault zone under the effect of mining dynamic pressure, similar simulation was carried out according to the geological data and mining technical conditions of the 3101east caving face in Chaoyang coal mine. Similar simulation material for 3m×0.3m×1.8m was made in the geometry ratio of 1 ： 100. In the model, displacement points were arranged and pressure sensors were set up. Experimental results showed that when working face advanced from the footwall to the hanging wall of fault, the regularly pace of immediate roof was 30 m and the caving period of the main roof was 60 m. The maximum influence range of advanced support pressure for working face was about 40 m, the maximum support pressure was 45.1 MPa, and the stress concentration factor was 3.0. The simulation results and courses had an important guiding significance for the actual construction of the site.
出处
《矿业研究与开发》
CAS
北大核心
2016年第12期72-74,共3页
Mining Research and Development
基金
国家自然科学基金资助项目(51304126
51174128)
山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地开放课题基金项目(MDPC2013ZR03)
山东科技大学人才引进科研启动基金项目(2014RCJJ027)
关键词
采矿工程
矿压规律
相似模拟
断层
Mining engineering, Strata behavior law, Similar simulation, Fault
