For biogenic gas-rich ground tunneling, control and prevention of gas explosion is an arduous task. Until now, there is still a lack of reliable technologies to eliminate security emergencies such as explosion and combustion. In the present study, geotechnical investigations associated with the biogenic gas-rich ground at Sutong GIL Yangtze River Crossing Cable Tunnel have been summarized. The potential pathways for biogenetic gas to penetrate into the shield TBM and the excavated tunnel have been analyzed. Then, the adverse effects of biogenic gas on slurry shield TBM and tunnel construction progress have been evaluated. Finally, solution schemes including bentonite slurry penetration, clay shock method, gas detector system, explosion proof design, gas extraction system and wireless communication system have been proposed to mitigate the risk of biogenetic gas leakage and explosion. The application of these technologies has enabled the safety construction of long distance cross-river tunnel in organic-rich marine sedimentary ground.

对于富含生物气的地面隧道，控制和防止气体爆炸是一项艰巨的任务。到目前为止，仍然缺乏可靠的技术来消除安全紧急情况，例如爆炸和燃烧。在本研究中，总结了与苏通GIL长江过江电缆隧道生物富气地面相关的岩土工程研究。分析了生物成因气体渗透到盾构隧道掘进机和挖掘隧道的潜在途径。然后，评估了生物气对泥浆盾构TBM的不利影响和隧道施工进度。最后，解决方案包括膨润土浆液渗透，粘土冲击法，气体检测仪系统，防爆设计，已经提出了气体提取系统和无线通信系统以减轻生物气体泄漏和爆炸的风险。这些技术的应用使得在富含有机物的海洋沉积地中长距离跨河隧道的安全施工成为可能。