Meizhou Bridge is located in the east of Meizhou City, Guangdong Province, across Meijiang River, with a total length of 572m m. The main bridge is an 8×40m prestressed concrete T-beam bridge. The bridge foundation adopts rock-socketed pile foundation, among which No.4 and No.5 piers B encounter karst caves during construction. This paper briefly introduces the treatment measures and experience of karst caves in bridge pile foundation construction in mountainous areas.

Delong Bridge is located at the intersection of Meijiang River and Chengjiang River in Meizhou, Guangdong. In February 2000, piping and hole wall cracking occurred during the construction of l# pile on Platform 3. Grouting technology is used to strengthen the plugging, and good results have been achieved. Briefly introduce the construction experience and experience. Meijiang Bridge is the most famous and earliest bridge in Meizhou, which spans Meijiang River and was built in the spring of the 23rd year of the Republic of China (1934). After the turmoil in War of Resistance against Japanese Aggression and the War of Liberation, it still stands on the top of the U-shaped Meijiang River after several repairs and expansions, becoming the main throat connecting the north and the south. Meijiang Bridge, with beautiful and practical shape and arched guardrail, is a landmark building of Meicheng in the early years. The original Meijiang Bridge was 278.5 meters long and 6.65 meters wide, divided into thirteen holes, and was a multi-arch arc reinforced concrete bridge. At that time, the bridge deck was only paved with wooden boards in the middle, and the two ends of the bridge were stepped on by bricks and stones. Pedestrians stepped on it and vehicles could not pass. 1950 and 1965, Meixian people's government invested twice in rebuilding cement bridge deck, widening sidewalks, and building overpass approach bridges to make vehicles pass. The newly rebuilt Meijiang Bridge is 289 meters long and 12 meters wide, which is even more magnificent. What people see now is the extension in 1965. 1965, when Mr. Guo Moruo came to Meizhou, he praised Meizhou as a "first-class cultural relic". Meijiang Bridge is one of the landmark buildings in Meizhou and the main bridge connecting the north and south of Meicheng. Especially before the completion of Dongshan Bridge in 1980s, it was an artery running through the north and south. 1986, identified by relevant parties, Meijiang Bridge has reached its service life and no motor vehicles are allowed to pass.