文档介绍：瓦斯隧道施工风险综合控制技术探讨
瓦斯隧道施工风险综合控制技术探讨
摘要:在山区隧道修建中,由于作业环境、地质条件、围岩等的差异,导致隧道设计和施工是动态,作业风险大。隧道施工所发生的事故中多以瓦斯爆炸为主,一旦发生施工往往造成大量的人员伤亡和财产损失,因此如何保证施工中的人员安全是一项艰巨的任务,把安全措施融入到隧道施工中去是保证安全施工的必要手段。本文首先分析了瓦斯隧道可能发生的灾害,然后以风险控制理论为基础介绍了瓦斯隧道风险控制的流程及要点,最后探讨了瓦斯隧道施工风险的综合控制技术。
关键词:瓦斯隧道;施工风险;瓦斯浓度;检测;风险源
Abstract: in mountain tunnel construction, such as work environment, geological condition, surrounding rock differences, lead to tunnel design and construction is a dynamic, operation risk is big. Accidents in the tunnel construction in gas explosion is given priority to, more in the event of construction often caused heavy casualties and property losses, so how to ensure the safety of the construction of personnel is a daunting task, put the security measures into the tunnel construction is the essential means to ensure safety construction. At first, this paper analyzes the possible hazards of gas tunnel, then on the basis of the theory of risk control risk control process and main points of gas tunnel are introduced, and finally discusses prehensive control technology of gas tunnel construction risk.
Key words: gas tunnel; Construction risk; The gas concentration; Detection; Risk source
中图分类号:文献标识码:A文章编号:2095-2104(2013)
瓦斯隧道可能发生的灾害
(一)煤与瓦斯突出
在地应力和瓦斯压力的共同作用下,很短的时间中破碎的煤、岩和瓦斯从洞壁突然抛出,伴有猛烈的声响和巨大的动能,同时释放出大量的瓦斯。有时伴随瓦斯爆炸,造成二次破坏。“突出”事故的伤亡和损失一般都是很渗重的。
(二)煤突然压出
部分煤在构造应力或放炮振动影响下,整体抛出,但位移距离不大,压出的