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Determination method for target depth of deep mixing pile and construction method of deep mixing pile
The invention provides a deep mixing pile target depth determining method and a deep mixing pile construction method.The deep mixing pile target depth determining method comprises the following steps that in the process that a deep mixing pile machine drives a drill rod to drill downwards, the real-time working current value I of a rotary power head of the deep mixing pile machine is obtained in real time; when it is judged that the real-time working current value I meets the following conditions 1-3 at the same time, it is determined that the target depth is reached, wherein the condition 1 is that the real-time working current value I is larger than a set standard current value I0; the second condition is that the difference value between the real-time working current value I and the no-load current I < empty > is larger than the set difference value I < difference >; and condition 3: the duration time of the condition 1 and the condition 2 is longer than the set duration t0 at the same time. According to the method, the three judgment conditions are set, the target stratum can be accurately recognized in the drilling process, the situation that a drill rod and cement paste are wasted due to excessive drilling is avoided, and the situation that the engineering quality is affected due to the fact that the recognition depth cannot reach the target stratum can be avoided.
本申请提供一种深搅桩目标深度确定方法及深搅桩施工方法，所述深搅桩目标深度确定方法包括以下步骤：在深搅桩机驱动钻杆下钻的过程中，实时获取深搅桩机的旋转动力头的实时工作电流值I；判断实时工作电流值I同时满足以下条件1‑条件3时，确定到达目标深度：条件1：实时工作电流值I大于设定标准电流值I0；条件2：实时工作电流值I与空载电流I空的差值大于设定差值I差；条件3：条件1和条件2的持续时间同时大于设定时长t0。本申请通过设置三个判定条件，可以在钻进的过程中精准地识别到目标地层，避免过度下钻浪费钻杆和水泥浆，又可避免因识别深度不到目标地层而影响工程质量。
Determination method for target depth of deep mixing pile and construction method of deep mixing pile
The invention provides a deep mixing pile target depth determining method and a deep mixing pile construction method.The deep mixing pile target depth determining method comprises the following steps that in the process that a deep mixing pile machine drives a drill rod to drill downwards, the real-time working current value I of a rotary power head of the deep mixing pile machine is obtained in real time; when it is judged that the real-time working current value I meets the following conditions 1-3 at the same time, it is determined that the target depth is reached, wherein the condition 1 is that the real-time working current value I is larger than a set standard current value I0; the second condition is that the difference value between the real-time working current value I and the no-load current I < empty > is larger than the set difference value I < difference >; and condition 3: the duration time of the condition 1 and the condition 2 is longer than the set duration t0 at the same time. According to the method, the three judgment conditions are set, the target stratum can be accurately recognized in the drilling process, the situation that a drill rod and cement paste are wasted due to excessive drilling is avoided, and the situation that the engineering quality is affected due to the fact that the recognition depth cannot reach the target stratum can be avoided.
本申请提供一种深搅桩目标深度确定方法及深搅桩施工方法，所述深搅桩目标深度确定方法包括以下步骤：在深搅桩机驱动钻杆下钻的过程中，实时获取深搅桩机的旋转动力头的实时工作电流值I；判断实时工作电流值I同时满足以下条件1‑条件3时，确定到达目标深度：条件1：实时工作电流值I大于设定标准电流值I0；条件2：实时工作电流值I与空载电流I空的差值大于设定差值I差；条件3：条件1和条件2的持续时间同时大于设定时长t0。本申请通过设置三个判定条件，可以在钻进的过程中精准地识别到目标地层，避免过度下钻浪费钻杆和水泥浆，又可避免因识别深度不到目标地层而影响工程质量。
Determination method for target depth of deep mixing pile and construction method of deep mixing pile
一种深搅桩目标深度确定方法及深搅桩施工方法
CHENG CHANGHONG (author) / YANG WEIJIE (author) / WANG CHAO (author) / SHEN ZENGLIANG (author) / WU YUXIANG (author) / ZHANG PEIYIN (author) / LI SHIWEI (author) / DING LEI (author)
2023-09-05
Patent
Electronic Resource
Chinese
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