Failure accident are liable to occur in the deep well and hard formation. Fatigue faliure is the main faliure form.
特别是在深井作业中及硬地层,容易发生失效事故,其中疲劳失效是主要的失效形式。
The defects are liable to occur in the concrete-filled steel tubular with small side-lengths or small diameter in the pouring process.
边长或直径较小的钢管混凝土柱的浇筑过程中容易产生这种缺陷。
Borehole problems and drilling accidents are liable to occur while drilling in western blocks in Tuha Oilfield, which is rich in salt lime beds.
吐哈油田西部各区块富含盐膏、膏质泥岩层,钻井时易发生复杂情况与事故。
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