摘要
铁法矿务局大明一、二矿的煤层上覆为含水丰富的第四系砂层。煤层开采后，一些工作面出现了砂层水渗入井下的现象。为了弄清这些工作面渗水原因和今后水体下煤层的安全开采，在没有本矿区导水裂缝带高度实测数据的情况下，通过对两矿大量已采工作面资料的收集，采用最小二乘法进行计算，得出了两矿水体下安全开采深度的临界曲线及经验公式。
The coal seam in Daming No.1 & No.2 Mines, Tiefa Mining Administration is overlain by a rich water bearing Quaternary sand layer. When the seam was extracted, water from the sand layer penetrated into some coal faces. In order to find out the reasons for water infiltration into the face and for safe extraction of the coal seams under the water body in the future, the least square calculation was made based on the information obtained from two mines when the measured data, such as the height of water conducting cracked zone, were not available. The critical curves and empiric formula for calculation of safe mining depth under water body were obtained.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1996年第5期473-475,共3页
Journal of China Coal Society
关键词
数理统计
最小二乘法
安全开采深度
水下采煤
mathematical statistics, least square, critical curves, safe mining depth
