井壁 meaning in English

wall of a well
◇井壁坍塌 cave-in; caving

The sides of the pit fell in .
井壁塌了。
The hole was lined with a steel tube to prevent the walls from falling in .
用一根钢管给钻孔加衬，以防井壁坍塌。
Study and application of sidewall instability criteria
井壁失稳判断准则及应用分析
Analysis of borehole collapse cycling time for shale
泥页岩井壁坍塌周期分析
The sidewall fracture of the shaft and the creep of concrete
井壁破裂与砼的徐变破坏

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