...工程；井下电视；涌砂；控制爆破；井管腐蚀[gap=769]Key words： old well treating engineering; underground TV; sand inrush; controlled blasting; well pipe corrosion...
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避免了现有过滤器容易堵塞和涌砂的问题。
Unlike the available ones, the said filter has less trouble of blocking and sand surge.
均质各向同性砂砾石堤基渗漏涌砂可归纳为完整井和非完整井模型。
The seepage and boiling of sand on the uniform isotropic gravel base of dam can be reduced to completely penetrating well and nonpenetrating well model.
通道的规模取决于涌砂口的流量大小和水位高低，尤其在较低水位时通道规模将最大。
The size of the channel depends on the flow and water level at the sand gushing opening, and in particular, maximum channel size is possible at low water level.
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