摘要
为研究充填墙强度和宽度对巷道变形的影响,确定合理的巷旁充填参数,建立了充填墙承载结构模型,并基于多指标分析,运用全面试验设计,精确分析了充填墙强度、宽度两因素四水平对沿空留巷充填墙水平位移H、顶板下沉量J、煤帮水平位移K、底鼓量L影响的显著性。研究表明:设计巷旁充填参数必须考虑强度和宽度两因素作用;强度、宽度两因素四水平对指标H、L影响显著,对指标J、K影响不显著,抓住主要指标H、L,兼顾次要指标J、K,考虑强度和宽度的交互作用,确定新元矿3107工作面充填墙强度10 MPa和宽度2.0 m为最优组合。将研究成果应用于3107工作面,取得良好的围岩控制效果。
In order to study the influence of the strength and width of the filling-wall on the deformation of the roadway and determine the reasonable filling parameters next to the roadway,the model of the filling-wall bearing structure was established.Based on multi-index analysis test,the four levels of the two factors strength and width of the filling wall were accurately analyzed by comprehensive test design about the significance of the filling-wall horizontal displacement H,roof subsidence J,coal side horizontal displacement K,floor heave L of the gob-side entry. The study showed that the two factors of strength and width must be considered when roadside filling parameters were designed;the factors of strength and width had significant influence on the index H and L but very slight influence on the indexes J and K,main indexes H and L were seized,reference index J and K were considered,the interaction of strength and width was considered,the optimum combination of filling wall strength was 10 MPa and width was 2 m in No.3107 working face of Xinyuan Coal Mine. The research results were applied in the No.3107 working face and remarkable control effect of the surrounding rock was achieved.
作者
赵飞
柏建彪
柳军涛
ZHAO Fei;BAI Jianbiao;LIU Juntao(No.2 Coal Mine,Yang Quan Coal Industry(Group)Co.,Ltd.,Yangquan 045008,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining&Technology,Xuzhou,Jiangsu 221116,China;Shanxi Xinyuan Coal Limited Liability Company,Jinzhong 045400,China)
出处
《煤炭科学技术》
CAS
CSCD
北大核心
2020年第4期200-205,共6页
Coal Science and Technology
基金
国家自然科学基金资助项目(51574227)。
关键词
巷旁充填
充填墙强度和宽度
巷旁承载系统
全面试验设计
多指标分析
roadside filling
strength and width of filling-wall
roadside bearing system
comprehensive test
multi-index analysis
