Recently, the Standardization Technical Committee of the Chinese Society for Rock Mechanics and Engineering (hereinafter referred to as the "Standardization Committee") organized a review meeting in Chengdu for the preliminary drafts of the "Technical Specification for Measurement-While-Drilling Sensing and Comprehensive In-Hole Testing in Engineering Investigation Drilling" and the "Technical Specification for Prevention and Control of Large Deformation of Rock Mass in Deep Engineering". The meeting was chaired by Researcher Huang Lixing, Consultant Secretary-General of the Standardization Committee, and Zhang Shishu, Deputy Party Secretary and General Manager of Chengdu Engineering Corporation, attended the meeting. The meeting heard reports from the two drafting groups on the drafting process and main contents of the standards. The participating experts discussed the standards chapter by chapter and article by article. The review concluded that the "Technical Specification for Measurement-While-Drilling Sensing and Comprehensive In-Hole Testing in Engineering Investigation Drilling" and the "Technical Specification for Prevention and Control of Large Deformation of Rock Mass in Deep Engineering" have generally reasonable structures, basically complete contents, advanced technical provisions, and operability, and meet the requirements for drafting group standards. They were unanimously approved by the review. As national strategies for strengthening the country in energy, transportation, water networks, and other fields advance toward western China and respond to major national strategic needs, underground engineering in western China, especially the Qinghai-Tibet Plateau region, currently faces generally extremely complex geological conditions. To identify and ascertain engineering geological conditions, standardize prevention and control technologies for large deformation of surrounding rock in deep engineering, and guide engineering construction, refined investigation is imperative. Measurement-while-drilling sensing technology and comprehensive testing technology can effectively achieve efficient and refined borehole detection, and this technology has become one of the effective means for efficiently, economically, and greenly identifying deep engineering geological conditions. By standardizing the investigation, design, construction, and monitoring of tunnel sections with large deformation of surrounding rock in deep engineering, engineering safety can be significantly improved, construction and operation and maintenance risks can be reduced, and innovation in deep resource development and green construction technologies can be promoted. Relying on its technical accumulation in the deep engineering field in recent years, PowerChina Chengdu Engineering Corporation, together with relevant domestic research institutes and construction units, carried out the drafting of the group standards "Technical Specification for Measurement-While-Drilling Sensing and Comprehensive In-Hole Testing in Engineering Investigation Drilling" and "Technical Specification for Prevention and Control of Large Deformation of Surrounding Rock in Deep Engineering". The drafting results not only fill the gaps in standardization, guidance, and operability in measurement-while-drilling sensing and comprehensive in-hole testing technologies in the engineering investigation field and in the prevention and control of large deformation of surrounding rock in deep engineering, but also have positive significance for promoting industry technological progress, improving the technical standards system in the engineering investigation field, and supporting major national engineering construction.
Committee members, experts, and representatives from the Standardization Technical Committee of the Chinese Society for Rock Mechanics and Engineering, China Railway Eryuan Engineering Group Co., Ltd., Shandong University, China University of Geosciences (Wuhan), China Railway First Survey and Design Institute Group Co., Ltd., Chengdu University of Technology, Institute of Rock and Soil Mechanics of the Chinese Academy of Sciences, Institute of Multipurpose Utilization of Mineral Resources of the China Geological Survey, China Railway Eryuan Chengdu Engineering Testing Co., Ltd., Institute of Exploration Technology of the Chinese Academy of Geological Sciences, China Railway Southwest Research Institute Co., Ltd., Sichuan Zhongshui Chengkanyuan Engineering Geophysical Exploration and Testing Co., Ltd., China University of Geosciences (Beijing), China University of Mining and Technology (Beijing), Sinohydro Bureau 7 Co., Ltd., and other units attended the meeting.
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