瓦斯隧道工程中的人机协同技术创新探讨

地下工程中的瓦斯隧道建设项目,遭遇瓦斯治理与施工进度调整之间的难题。本文重点研究瓦斯隧道工程建设领域中人机协同技术创新实践的经验与成果,运用尖端机器人、传感器及数据分析技术,劳动者与器械设备的协同作战得以优化。本文重点探讨了人机协同技术在提高瓦斯隧道工程安全性、减少事故发生风险及提升施工效率方面的实际应用成果。

高速公路瓦斯隧道工程的施工技术及安全保障

在高速公路工程建设过程中,瓦斯隧道因特殊的地质类型容易影响到工程建设安全和进度,若施工不当,极易发生瓦斯泄露进而导致爆炸,给施工人员带来巨大的风险隐患。基于此,本文从高速公路瓦斯隧道工程施工风险入手,探究高速公路瓦斯隧道工程技术及安全措施,并通过分析具体案例,不断改进高速公路瓦斯隧道施工技术,以降低施工事故的发生。

瓦斯隧道工程爆破施工分析

文章以王家岩隧道为切入点,结合现有经验和启示,从瓦斯处治方案、瓦斯隧道爆破施工、爆破效果控制、爆破振动控制五个方面分析瓦斯隧道工程爆破施工技术的具体应用。瓦斯隧道工程地质条件复杂多变,存在很多安全隐患,施工难度比较大,应用爆破施工技术可保证施工的安全性和施工质量。瓦斯隧道工程在施工中会面临着很多问题,其中煤层瓦斯突出最为严重,控制不当极易引发爆炸事故,影响施工的安全性。科学合理地应用爆破施工技术,具有可行性和科学性,值得类似工程大力参考借鉴。

基于正交试验的瓦斯隧道施工通风方案优化研究

为提高瓦斯隧道施工通风效率,改善隧道内的工作环境,以城开高速鸡鸣隧道为研究对象,考虑掌子面与二次衬砌间距(X)、风筒直径(Y)、出风口与掌子面距离(Z)3个因素,运用fluent进行正交试验数值模拟研究,分析以上3个因素对通风效果的影响,并确定最有利于瓦斯气体排出的通风设施布置方案。研究结果表明:由极差分析及方差分析结果可知,3个因素各自水平间的变化对通风效果的影响程度依次为掌子面与二次衬砌间距、出风口与掌子面距离、风筒直径;最优通风方案中X、Y、Z等3个因素的水平值分别为50 m、1.0 m和20 m;隧道沿程中流场结构分为涡流区、涡流影响区和稳定区,其中涡流区对瓦斯气体的排除起着最主要的阻碍作用,稳定区几乎不影响瓦斯气体的运动,涡流影响区对瓦斯气体的运动有较小影响,因此瓦斯气体浓度在隧道沿程的变化是先减小,再略微升高,最后趋于稳定;横断面处,回风侧瓦斯浓度高于进风侧,并且回风侧隧道边壁及底角处瓦斯气体集中现象较为明显,实际施工过程中应该加强对该两个区域内瓦斯浓度的监测。

Developing a risk assessment system for gas tunnel disasters in China

Gas disasters always restrict the tunnel constructions in mountain area, which becomes a major geological barrier against the development of underground engineering. China is rich in coal resources and has a large amount of gas with a wide range of distribution. However, China experienced not only adverse effects on coal mining but also gas disasters in underground engineering construction, such as tunnels and chambers. With the increased number of tunnels passing through coal-bearing strata, the incidence of gas accidents is also rising. Therefore, the significance of preventing and mitigating gas disasters should be emphasized, and an effective risk assessment method for gas disasters should be established. On the basis of research on over 100 gas tunnels in China, a relatively ideal gas disaster risk assessment method and system for tunnels are established through the following measures. Firstly, geo-environmental conditions and gas situations were analyzed during construction. Secondly, qualitative analysis was combined with quantitative analysis. Finally, the influencing factors of gas disasters, including geological conditions, gas,and human factors, were investigated. The gas tunnel risk assessment system includes three levels:(1) the grading assessment of a gas tunnel during the planning stage,(2) the risk assessment of gas tunnel construction during the design and construction stages,(3) the gas tunnel outburst risk assessment during the coal uncovering stage. This system was applied to the dynamic assessment of gas disaster during the construction of the Zipingpu tunnel of Dujiangyan–Wenchuan Highway(in Sichuan, Southwest China). The assessment results were consistent with the actual excavation, which verified the rationality and feasibility of the system. The developed system was believed to be back-up and applied for risk assessment of gas disaster in the underground engineering construction.