摘要
以长平矿4304工作面为研究对象,采用理论计算分析和现场实测互相验证的方法,总结上覆岩层的运动规律,得到“三带”高度范围:垮落带最大高度为23.2~25.9 m、裂隙带最大高度为20.2~65.3 m、弯曲下沉带高度为166.7~181.4 m。表明经验公式计算结果偏小,数值模拟得到的“三带高度”与实际情况更加吻合,可适用于“三带”高度的确定。
Taking the 4304 working face in Changping mine as the research object,using the method of mutual verification of theoretical calculation and analysis and field measurements,summarizing the movement laws of the overlying strata,the height of the"three zones"is obtained.Scope:the maximum height of the collapse zone is between 23.2 m and 25.9 m,the maximum height of the fracture zone is between 20.2 m and 65.3 m,and the height of the curved subsidence zone is between 166.7 m and 181.4 m.It shows that the calculation result of the empirical formula is too small,and the"three zones height"obtained by numerical simulation is more consistent with the actual situation,and can be applied to the determination of the"three zones"height.
作者
闫飞
YAN Fei(CCTEG Taiyuan Research Institute,Taiyuan 030006,China;National Engineering Laboratory of Coal Mining Machinery and Equipment,Taiyuan 030032,China;Shanxi Tiandi Coal Machinery Co.,Ltd.,Taiyuan 030032,China)
出处
《煤炭技术》
CAS
北大核心
2021年第11期54-56,共3页
Coal Technology
基金
山西省科技重大专项(20181102027-01)。
关键词
采空区
三带高度
数值模拟
现场实测
gob
"three zones"height
numerical simulation
field measurement
