In order to improve the quality of highway maintenance, yongchang highway management section actively explores the application of "four new technologies" in highway preventive maintenance.On July 19, under the high temperature of more than 30 degrees, the basalt fiber synchronous sealing technology was used to treat the pavement diseases of Line Z058 K17-K20 highway.This process is mainly completed simultaneously with 4 layers of spreading. Special equipment is used. The first layer of spreading modified asphalt, the second layer of spreading basalt fiber, the third layer of spreading modified asphalt, and the fourth layer of spreading 5-10 gravel.Basalt fiber sealing technology has the characteristics of high wear resistance, high water resistance, fast construction, etc., and has a strong prevention performance to water damage, which has been greatly improved compared with the previous synchronous crushed stone sealing technology, and can effectively extend the service life of pavement.