金鸡滩煤矿首采工作面厚松散层地裂缝变形特征研究

Study on deformation characteristics of ground fissures in thick loose layer of first mining face in Jinjitan Coal Mine

根据金鸡滩煤矿首采工作面地表实测数据,对厚松散层地裂缝发育变形特征进行研究,发现厚松散层地裂缝量多,发育程度较高,部分呈台阶状,裂缝角79°等变形特征,同时基于厚松散层地裂缝深度模型预计值与实测值基本吻合,可利用该模型对类似工作面进行地裂缝预测,具有一定的推广和借鉴意义。

According to the measured data of the first mining face in Jinjitan Coal Mine,the development and deformation characteristics of ground fissures in thick loose layer were studied.It was found that there are many ground fissures in thick loose layer with high development degree,some of them are in step shape,and the fracture angle is 79°and so on.At the same time,based on the depth model of ground fissure in thick loose layer,the predicted value was basically consistent with the measured value.The model can be used to predict the ground fissures in similar working face,which has a certain promotion and reference significance.