TANG Yongzhi，TANG Bin，CHENG Hua，et al. New prefabricated support structure for TBM tunneling in complex strata of coal mines: engineering practice[J]. Coal Science and Technology，2024，52（9）：68−75
. DOI: 10.12438/cst.2024-0816| Citation: |
TANG Yongzhi，TANG Bin，CHENG Hua，et al. New prefabricated support structure for TBM tunneling in complex strata of coal mines: engineering practice[J]. Coal Science and Technology，2024，52（9）：68−75 . DOI: 10.12438/cst.2024-0816
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TANG Yongzhi: 唐永志，男，安徽淮南人，正高级工程师，享受国务院特殊津贴，原淮河能源控股集团有限责任公司、淮南矿业（集团）有限责任公司副总经理、首席专家，兼任中国煤炭学会副理事长、中国岩石力学学会软岩分会副理事长，国务院特殊津贴获得者，入选安徽省“115”产业创新团队带头人、学术和技术带头人，荣获第二届全国杰出工程师鼓励奖。研究方向：在深井安全高效生产、深厚表土层特殊法凿井、煤与瓦斯突出防治、高应力软岩围岩控制、巷道快速掘进等方面。主要成果：紧紧围绕煤矿生产建设现实难题进行攻关，承担国家科技重大专项等国家级课题4项，主持企业课题上百项，获得省部级及以上科技奖17项，获授权专利29项，发表论文40余篇
Tunnel Boring Machines (TBMs) have been successfully applied in the excavation of deep shaft roadways in coal mines, yielding substantial socio-economic benefits. However, technical bottlenecks remain that hinder their further promotion and application. In response to the challenge of current support structures and techniques failing to simultaneously meet the requirements of support efficiency, strength, and construction costs, which impedes the full utilization of TBM speed advantages, a research team has developed a novel steel pipe segment assembly support structure. Large-scale model tests of the new prefabricated support structure were conducted to ascertain the deformation and failure patterns under loaded conditions, and the support structure was optimized based on the test results. Numerical simulations were performed to evaluate the reliability of the new support structure under TBM tunneling conditions. Industrial trials were subsequently conducted to field-test the feasibility of the new steel pipe segment support structure for TBM-excavated roadways in coal mines. The test results indicate that the maximum tensile strain of the surrounding rock is 803 με, and the deformation of the steel pipe support structure is less than 1 mm. The new support structure can be installed quickly, with the installation of one ring of segments (1.5 m) completed within 90 minutes, significantly enhancing the support strength in TBM-excavated roadways and the adaptability to strata conditions. This research provides a technical reference for further increasing the tunneling speed of coal mine roadways and ensuring the continuity of coal mining operations.
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