This paper analyzes and summarizes the quality common faults in sinking well construction.

本文就沉井施工中的质量通病进行了分析和总结。

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It is difficult to dig rock in sinking well due to the requirements of protecting well bore and achieving effective crashing of rock.

沉井井筒内水下开挖岩石技术难度大，既要保护井筒不受损伤，又要达到岩石破碎效果。

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This paper brings forward a new construction method that brick model has been used to replace wood model in blade feet part sinking well engineering.

本文提出用砖模代替木模的方法用于沉井工程中刃脚部分的施工的理论。

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The key is to stop sinking money into assets that are sinking as well.

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Arsenic contamination is a major problem in the region where large water well sinking programmes have been carried out for the last 20 to 30 years.

BBC: Bangladesh's arsenic water concern

Clearly, the maritime wisdom of abandoning a sinking ship as quickly as possible applies equally as well when investing in the group.

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