| 钻孔灌注桩泥浆流变性能评价方法探讨 |
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| 引用本文： | 张新明,郑秀华,于进洋,白晨光.钻孔灌注桩泥浆流变性能评价方法探讨[J].探矿工程,2013,40(4):75-77. |
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| 作者姓名： | 张新明 郑秀华 于进洋 白晨光 |
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| 作者单位： | 中国地质大学〈北京〉工程技术学院,中国地质大学〈北京〉工程技术学院,中国地质大学〈北京〉工程技术学院,中国建筑股份有限公司技术中心 |
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| 摘 要： | 粘度是评价钻孔灌注桩泥浆性能的重要参数之一。由于钻孔灌注桩桩径大，泥浆循环速度低，剪切速率低，评价石油钻井和地质勘探泥浆流变性能的方法不适合评价钻孔灌注桩泥浆粘度。首先分析了钻孔灌注桩循环速度，推出其剪切速率分布；然后分析了旋转粘度计的剪切速率，提出了低转速的粘度计更适合评价钻孔灌注桩泥浆；最后推导出了塑性粘度、有效粘度和动切力的计算公式，对准确评价钻孔灌注桩泥浆具有重要理论和实践意义。
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| 关 键 词： | 钻孔灌注桩 泥浆 流变性能 粘度 剪切速率 |
| 收稿时间： | 2012/12/17 0:00:00 |
| 修稿时间： | 2012/12/17 0:00:00 |
Discussion of Evaluation on Mud Rheological Property Used for Bored Pile |
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| ZHANG Xin-ming,ZHENG Xiu-hu,YU Jin-yang and BAI Chen-guang.Discussion of Evaluation on Mud Rheological Property Used for Bored Pile[J].Exploration Engineering(Drilling & Tunneling),2013,40(4):75-77. |
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| Authors: | ZHANG Xin-ming ZHENG Xiu-hu YU Jin-yang and BAI Chen-guang |
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| Institution: | China University of Geosciences,China University of Geosciences,China University of Geosciences,China State Construction Engineering Corp. Ltd. Technical Center |
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| Abstract: | Viscosity is one of the important parameters to evaluate the mud property of bored pile. Because of the large pile diameter, low mud circulation velocity and low shear rate, the methods of evaluating mud rheological property of petroleum drilling and geological exploration is not suitable for evaluating bored pile. This paper firstly analyzes the circulation velocity of bored pile to calculate the shear rate distribution; then analyzes the shear rate of rotary viscometer and suggests that variable speed viscometer with low rpm is more suitable to evaluate the mud of bored pile; the plastic viscosity, effective viscosity and yield point formulation under low shear rate were finally deduced. |
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| Keywords: | bored pile mud rheological property viscosity shear rate |
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