黄陇煤田综放采煤导水裂隙带高度经验公式  

Formula for Predicting Height of Water Flowing Fractured Zone Caused during Fully-mechanized Caving Mining in Huanglong Coalfield

作　　者：李超峰 LI Chao-feng(Xi'an Research Institute,China Coal Technology and Engineering Group Corp.,Xi'an 710077,China;Shaanxi Key Laboratory of Coal Mine Hazard Prevention and Control Technology,Xi'an 710077,China)

机构地区：[1]中煤科工集团西安研究院有限公司,西安710077 [2]陕西省煤矿水害防治技术重点实验室,西安710077

出　　处：《煤炭技术》2021年第6期119-122,共4页Coal Technology

摘　　要：为了获得更为准确的综放采煤条件下煤层顶板导水裂隙带高度预测经验公式,首次明确提出三次函数多项式曲线的拟合度最佳,获得了黄陇煤田包括工作面宽度为B和采高为h的双因素非线性导水裂隙带高度预测经验公式。研究结果表明:一方面,中硬顶板导水裂隙带高度经验公式拟合优度R2值由原来0.722提高至0.824,软弱顶板导水裂隙带高度经验公式拟合优度R2值由原来0.587提高至0.915,拟合精度显著提高;另一方面,与原文经验公式预测值对比发现,经验公式预测值更接近实测值。因此,获得的经验公式更准确。In order to obtain a more accurate formula for predicting height of water flowing fractured zone caused during fully-mechanized caving mining,has found out cubic function is the best fitting line for the relationship between height of water flowing fractured zone and value of factors for the first time.Has also got non-linear formulas including height of coal mining and width of working face in Huanglong coalfield.The research results show that:on the one hand,the R2 value of formula under the medium-hard stratum is improved from 0.722 to 0.824,and the R2 value of formula under the soft stratum is improved from 0.587 to 0.915,then,the fitting accuracy of formulas obtained have been improved significantly;on the other hand,compared with the predicted value of the original formula,it is easy to find out that the value predicted by the formula is closer to the measured value.Therefore,know the formulas obtained are more accurate.

关 键 词：黄陇煤田 导水裂隙带 经验公式 三次函数 双因素 

分 类 号：TD741[矿业工程—矿井通风与安全]