On December 9, 2017, the Urban Underground Space and Geological Disaster Prevention Technology Forum and the 8th Jiangsu Geotechnical Mechanics and Engineering Academic Conference, jointly hosted by the Jiangsu Geotechnical Mechanics and Engineering Society and the Engineering Safety and Protection Branch of the Chinese Society for Rock Mechanics and Engineering, and organized by China University of Mining and Technology, Jiangsu Geological Engineering Survey Institute, Nanjing Metro Group and other units, was grandly held at the Kaiyuan Mingdu Hotel in Xuzhou, Jiangsu. More than 300 people from over 100 units, including relevant leaders of industry associations, numerous industry experts, and corporate elites, attended this conference and witnessed its successful convening.
　　The outstanding features of this conference were its large scale, numerous experts, novel reports, and strong pertinence. The conference was strongly supported by more than 20 enterprises including Xuzhou Dunan Heavy Industry Machinery Manufacturing Co., Ltd. Chen Jianhai, General Manager of Dunan Heavy Industry, and Li Zhenglong, Minister of Sales Service, were invited to attend.
　　At the conference, Li Zhenglong, Minister of Marketing Service of Xuzhou Dunan Heavy Industry, was invited to give a deep explanation and report on behalf of Dunan Heavy Industry on the domestic development and application of full-casing full-rotation drilling rigs. The speech content provided a detailed introduction to the company profile and development history of Xuzhou Dunan Heavy Industry, the principles of full-casing full-rotation drilling rig equipment, equipment technical parameters, and the construction characteristics of using full-casing full-rotation drilling rigs. It explained the construction key points, application fields, and construction characteristics of the five major construction methods of Dunan Heavy Industry's full-casing full-rotation drilling rigs, compared the main technical advantages of full-casing bored cast-in-place piles and traditional bored cast-in-place piles, and described rich practical experience in pile foundation construction cases under different geological types and with different construction machinery.
　　In addition, at the conference, Cao Xueping, General Manager of Jiangsu Tongzhou Foundation Construction Co., Ltd., in his speech on the practice and exploration of several commonly used full-casing construction methods, covered the development history of full casing, the parameters of DTR full-casing full-rotation drilling rigs, the full-rotation process flow, and detailed analysis and elaboration of specific construction cases using Xuzhou Dunan equipment full-casing full-rotation drilling rigs in the process flow.
　　After the conference, Xuzhou Dunan Heavy Industry Machinery Manufacturing Co., Ltd. organized relevant leaders, numerous industry experts, and corporate elites attending the conference to visit the Xuzhou Dunan Heavy Industry Machinery Manufacturing plant for exchange and guidance. 　　After the exchange and guidance in the plant workshop, the leaders and industry experts gathered in the conference room of Dunan Heavy Industry to discuss the problems encountered in the construction application of full-casing full-rotation drilling rigs. The issues discussed at the meeting were highly targeted. General Manager Chen Jianhai and Minister Li Zhenglong provided detailed answers to each question, and Cao Xueping, General Manager of Jiangsu Tongzhou Foundation, also explained his views on various issues discussed at the meeting.
　　The gathering of leaders and industry experts to visit Xuzhou Dunan Heavy Industry during this geotechnical mechanics and engineering academic conference is of great significance. It aims to build an academic exchange platform for all participants, allowing everyone to communicate directly and fully, share advanced technologies and valuable experience, and make greater contributions to the cause of underground urban space and geological disaster prevention in China.
　　Finally, let us look to the future. Opportunities and challenges coexist, and Xuzhou Dunan Heavy Industry will work together with industry colleagues to move towards brilliance!