Construction control method for small-distance tunnel obliquely penetrating muck accumulation body side slope

• Main Authors: YANG ZHONGFENG, MA GUOSONG, XIE BIN, SHI WENTAO, ZHANG XUE, YANG QINGGUO, GAO TIAN
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2024
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention discloses a construction control method for a small-clear-distance tunnel obliquely penetrating through a muck accumulation body side slope. The construction control method comprises the following steps that (1) a tunnel 3D model is constructed through FLAC3D; 2) initializing construction parameters of an advanced pipe shed support; (3) construction of an advanced pipe shed support is simulated in the tunnel 3D model; (4) simulating the tunnel excavation process in an underground excavation hole entering mode, and calculating the soil displacement of the current tunnel underground excavation hole entering section; (2) judging whether the soil displacement of the current tunnel underground excavation tunnel entering section is larger than a preset displacement threshold value d or not, if yes, modifying the construction parameters of the advance pipe shed support and returning to the step (2), and if not, outputting the optimal construction parameters of the advance pipe shed support; and (5) on