The Endanger Level of Gob under High Class Highway

By analyzing the destructiveness type of surface subsidence caused by gob,the law of distribution and the structure of road,the endanger extent and the main affection factors of high class highway caused by gob is discussed. The endanger level estimation method of various gobs to road and the management and protection principle of gob under road are given. The effective way that protect mine road and achieve safe and economic building road are using suitable mining method to reduce destructiveness of surface subsidence,changing roadbed of road,altering structure and material of road surface,increasing the resistance to decrease deformation of road.