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作 者:郭志红 唐宇[2] 杜满昌[3] 裴蕾 汪海波 闫定弘 高启晨 Guo Zhihong;Tang Yu;Du Manchang;Pei Lei;Wang Haibo;Yan Dinghong;Gao Qichen(CNPC Research Institute of Safety&Environment Technology;Jilin Oilfield Company;No.4 Oil Production Plant of Daqing Oilfield Company;Xizang Qingzang Oil Pipeline Co.,Ltd.)
机构地区:[1]中国石油集团安全环保技术研究院有限公司 [2]中国石油吉林油田分公司 [3]大庆油田有限责任公司第四采油厂 [4]西藏青藏石油管道有限公司
出 处:《油气田环境保护》2023年第3期49-52,57,共5页Environmental Protection of Oil & Gas Fields
摘 要:长输油气管道穿越河流隧道施工中可能产生大量施工涌水,其影响范围内会出现地下水水位下降,对地下水环境影响很大。文章以某天然气管道长江隧道穿越为例,根据隧址区地质、水文地质条件等,计算隧址区涌水量,分析长江盾构隧道施工对地下水的影响。分析结果表明,河流隧道施工会在一定程度上改变隧址区原有的地下水径流及排泄条件,会导致突涌水发生,对地下水产生较大影响。据此提出了河流隧道施工前做好地下水预探、采取注浆堵水或井点降水法施工等一系列保护措施,为河流隧道建设过程的地下水保护提供一定的借鉴。During the construction of long-distance oil and gas pipelines that crossing rivers and tunnels,a large amount of construction water can be produced,which can cause significantly decrease in the groundwater level within the affected area and greatly impact on the groundwater environment.This study took a natural gas pipeline which crossing the Yangtze River Tunnel as an example,and calculated the amount of water that will surge in the tunnel construction site based on the geological and hydrogeological conditions of the site.The impact of the construction of the Yangtze River shield tunnel on the groundwater was analyzed.The analysis results shown that the construction of river tunnels was possible to change the original groundwater flow and drainage conditions in the tunnel site,which can led to sudden water surges and have a significant impact on the groundwater.Therefore,a series of protective measures such as conducting pre-exploration of the groundwater,using grouting to block water or well-point dewatering during construction should be taken before the construction of river tunnels.This study may provide reference for the protection of groundwater during the construction process of river tunnels.
分 类 号:TE973.4[石油与天然气工程—石油机械设备] X523[环境科学与工程—环境工程]
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