Technology method for fishing and tieback casing of oil and injection well 油水井取套回接工艺作法
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Abstract : the monitoring of tieback prestress and its existing problems are discussed for foundation pit protection at dongfang square , beijing , and the problems in the tensile , such as the loss of prestress , bias in loading , are explained 文摘:对北京东方广场基坑支护中锚杆预应力的监测及其所出现的问题进行了分析，说明张拉过程中所存在的问题(预应力损失、偏心荷载等) 。
