Xuzhou Metro Line 1 is under intensive construction. Xingshanzi Station is located at the intersection of Old Xuxiao Highway and planned Xingshanzi Avenue, north of Kaiyuan Siji Community. As an important station of Xuzhou Metro Line 1, Xingshanzi Station is over 370 meters long and more than 19 meters wide in the standard section, and is an underground two-story island station. The station has a total of 7 entrances/exits, 4 groups of ventilation pavilions, and 2 fire evacuation openings.

　　According to the relevant person in charge of China Construction Group, the construction unit of Metro Line 1, since April 2015, all construction projects on Metro Line 1 that rotary drilling rigs could not complete have been carried out by Sunward Intelligent SWSD2512 dual-power-head powerful multi-functional drilling rig. It has solved numerous difficulties in Xuzhou Metro's secant piles and foundation pit support piles. A plain pile takes 40 minutes, a reinforced pile takes 2 hours, with a depth of 26 meters and 5 meters into rock, greatly improving construction speed, ensuring precise hole diameter and verticality, efficiently penetrating rock, and full casing follow-up.

　　Having heard of the remarkable Sunward dual-power-head powerful multi-functional drilling rig, Wang Xinjie, a builder of China's first metro and former president of Beijing Urban Construction Design Institute, made a special trip to Xuzhou to inspect the construction situation of the Sunward dual-power-head drilling rig on site. Through on-site understanding, President Wang was full of praise for the efficient dual-power-head multi-functional drilling rig. It is understood that President Wang participated in the construction of Beijing Metro Line 1 and is very familiar with metro construction methods. He is particularly knowledgeable about high-difficulty construction and is a senior pile foundation expert. When China's first metro was built, Premier Zhou Enlai, Marshal Zhu De, and Marshal Liu Bocheng cut the ribbon for Beijing Metro Line 1.

　　It is reported that the SWSD series dual-power-head powerful multi-functional drilling rig has significant construction advantages: 1. High construction efficiency; 2. Handles both "soft and hard" ground; 3. Casing wall protection, environmentally friendly; 4. Flexible and diverse construction methods. In particular, it can efficiently drill in complex strata such as cobble and boulder layers and hard rock layers. The pile hole diameter and hole wall shape are regular, the quality is good, the vertical accuracy is high, and there is no mud pollution during construction. It can solve the technical problem of efficient drilling "into rock" for large-diameter pile foundations, overcome the serious environmental pollution caused by mud, and fill a domestic technical gap. It is an efficient and environmentally friendly high-end pile construction machinery new product and new process.