隧道弃碴弃置处理应注意的几个问题

文章结合我国有关铁路隧道群地段隧道弃碴弃置情况的经验总结,指出了当前对隧道弃碴弃置处理应该重视的几个问题,并提出了有关建议。

油气田地面设施的弃置处理

为了解决油气田废弃设施本身及其残留介质可能会对环境造成影响的问题,需要对废弃的地面设备、管道采取必要的弃置措施,避免出现环境污染的现象。弃置方案的选择需要结合油气田生产设施的特点,满足所在国的相关规定,并保证弃置作业的安全性、环保性、可操作性和经济性。鉴于此,在选择弃置方式时,需根据油气田地面设施的建设现状,从作业安全、环境保护、施工难度和经济投资等方面综合考虑。

海上退役平台弃置方案

目前全国海洋石油不断开发,在役海洋石油平台老龄化问题日益严重,大量达到使用寿命并不满足延寿条件的平台需要弃置。本文结合实际案例,阐述有关南海第一个海上退役平台弃置方案技术细节,对我国海洋平台弃置技术的发展提供借鉴作用。

隔水管重入技术在渤海油田的应用

为了提高渤海油田的产量和经济效益,需要对无继续开采价值的老井进行弃置处理,重新利用弃置的槽口侧钻调整井。隔水管重入技术解决了原有老井槽再利用技术经济性不高的问题,已在渤海油田成功使用,经济性较高。

A disposal strategy of industrial hazardous wastes in the Three Gorges Region

A large quantity of industrial hazardous wastes (IHWs) accumulates in the Three Gorges Region. This study found that approximately 15 000 t IHWs were piled in the region by October 2001. These IHWs came from various sources and were complex in composition, mostly toxic and difficult to be disposed. IHW is regarded as a potential threat to the ecological environment, water resources and survival of local residents. It is important and indispensable to dispose the waste properly. To meet the regulation requirements on the disposal of IHWs and to minimize environmental effects on the Three Gorges Region, a disposal strategy is proposed, according to which approximately 600 t of the IHWs can be disposed by chemical stabilization, incineration and other treatment measures, and the rest need be stockpiled in safe and reliable places situated above the 177 m impoundment line of the Three Gorges dam.