| 基于步进式算法的裂隙注浆扩散机制研究 |
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| 引用本文： | 魏久传,韩承豪,张伟杰,谢超,张连震,李孝朋,张春瑞,蒋记港.基于步进式算法的裂隙注浆扩散机制研究[J].岩土力学,2019,40(3):913-925. |
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| 作者姓名： | 魏久传 韩承豪 张伟杰 谢超 张连震 李孝朋 张春瑞 蒋记港 |
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| 作者单位： | 1. 山东科技大学 地球科学与工程学院，山东 青岛 266590；2. 中国石油大学（华东）储运与建筑工程学院，山东 青岛 266580 |
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| 基金项目： | 国家自然科学基金青年基金资助项目（No.51509148）；山东科技大学人才引进科研启动基金资助项目（No.2017RCJJ030）；山东省自然科学基金（No.BS2015NJ010） |
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| 摘 要： |
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| 关 键 词： | 步进式算法 注浆扩散机制 恒参量裂隙注浆 动参量裂隙注浆 注浆设计 |
| 收稿时间： | 2018-08-06 |
Mechanism of fissure grouting based on step-wise calculation method |
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| WEI Jiu-chuan,HAN Cheng-hao,ZHANG Wei-jie,XIE Chao,ZHANG Lian-zhen,LI Xiao-peng,ZHANG Chun-rui,JIANG Ji-gang.Mechanism of fissure grouting based on step-wise calculation method[J].Rock and Soil Mechanics,2019,40(3):913-925. |
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| Authors: | WEI Jiu-chuan HAN Cheng-hao ZHANG Wei-jie XIE Chao ZHANG Lian-zhen LI Xiao-peng ZHANG Chun-rui JIANG Ji-gang |
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| Institution: | 1. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;
2. College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong 266580, China |
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| Abstract: | Grouting is an effective method to seal against water inrush in fractured rock. It is important to study the mechanism of fissure grouting to design the grouting and implement the project successfully. In this paper, firstly, the influence of the rheological properties of the slurry, diffusion path and grouting methods on fracture grouting was analyzed deeply. An improved step-wise calculation method was proposed to describe the fissures grouting process under different grouting diffusion conditions. This method can calculate key grouting parameters, such as the slurry front position, injection pressure, slurry viscosity and pressure distribution in the grouted zone, and grouting rate at any time. Secondly, the improved method was utilized to study the constant-parameters such as constant pressure grouting and constant rate grouting during the grouting process. The reliability and applicability of the approach were verified by comparing with previous results in the literature. Finally, the approach was adopted to investigate the dynamic fracture grouting characterized by staged descending rate and staged increasing pressure in practical engineering conditions. The change laws of the key factors, such as the injection pressure, grouting rate and diffusion distance, were analyzed. Therefore, this study revealed the diffusion mechanism of the dynamic fracture grouting to some extent and provided a meaningful guide for grouting design in practice. |
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| Keywords: | step-wise calculation method fissure grouting mechanism constant parametric grout dynamic parametric grout grouting design |
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