Experimental Investigation on Chemical Grouting in a Permeated Fracture Replica with Different Roughness

This paper presents an experimental investigation on chemical grouting in a permeated fracture replica considering its roughness. Tests of grouting with flowing water in the fracture replica were carried out under different Bardon’s standard roughness profiles. The interactions between inf...

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Main Authors: Lichuang Jin, Wanghua Sui, Jialu Xiong
Format: Article
Language:English
Published: MDPI AG 2019-07-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/9/13/2762
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spelling doaj-33bc22cea4e84facb7b77758b8bce1ad2020-11-25T00:30:45ZengMDPI AGApplied Sciences2076-34172019-07-01913276210.3390/app9132762app9132762Experimental Investigation on Chemical Grouting in a Permeated Fracture Replica with Different RoughnessLichuang Jin0Wanghua Sui1Jialu Xiong2School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, ChinaJiangsu Transportation Institute, Nanjing 210019, ChinaThis paper presents an experimental investigation on chemical grouting in a permeated fracture replica considering its roughness. Tests of grouting with flowing water in the fracture replica were carried out under different Bardon&#8217;s standard roughness profiles. The interactions between influential factors were considered and an experimental platform for grouting in rough fractures with flowing water was established. The effect of chemical grouting in fractures with flowing water was investigated using orthogonal experiment. The joint roughness coefficient (<i>JRC</i>), the initial water flow rate, the gel time, and the fracture opening were selected as factors in the orthogonal experiment. The results show that there is a positive correlation between the water plugging rate and <i>JRC</i>, and negative correlations between the water plugging rate and the initial water flow rate, gel time, and fracture opening. The change curve of the water flow rate is divided into three categories: Single platform decreasing type, double platform decreasing type, and multi-peak fluctuating type. The curve of seepage pressure contains three categories: Single peak type, multi-peak type and platform type. The results provide a reference for grouting in rock fractures.https://www.mdpi.com/2076-3417/9/13/2762chemical groutingfractureflowing waterwater plugging ratejoint roughness coefficient
collection DOAJ
language English
format Article
sources DOAJ
author Lichuang Jin
Wanghua Sui
Jialu Xiong
spellingShingle Lichuang Jin
Wanghua Sui
Jialu Xiong
Experimental Investigation on Chemical Grouting in a Permeated Fracture Replica with Different Roughness
Applied Sciences
chemical grouting
fracture
flowing water
water plugging rate
joint roughness coefficient
author_facet Lichuang Jin
Wanghua Sui
Jialu Xiong
author_sort Lichuang Jin
title Experimental Investigation on Chemical Grouting in a Permeated Fracture Replica with Different Roughness
title_short Experimental Investigation on Chemical Grouting in a Permeated Fracture Replica with Different Roughness
title_full Experimental Investigation on Chemical Grouting in a Permeated Fracture Replica with Different Roughness
title_fullStr Experimental Investigation on Chemical Grouting in a Permeated Fracture Replica with Different Roughness
title_full_unstemmed Experimental Investigation on Chemical Grouting in a Permeated Fracture Replica with Different Roughness
title_sort experimental investigation on chemical grouting in a permeated fracture replica with different roughness
publisher MDPI AG
series Applied Sciences
issn 2076-3417
publishDate 2019-07-01
description This paper presents an experimental investigation on chemical grouting in a permeated fracture replica considering its roughness. Tests of grouting with flowing water in the fracture replica were carried out under different Bardon&#8217;s standard roughness profiles. The interactions between influential factors were considered and an experimental platform for grouting in rough fractures with flowing water was established. The effect of chemical grouting in fractures with flowing water was investigated using orthogonal experiment. The joint roughness coefficient (<i>JRC</i>), the initial water flow rate, the gel time, and the fracture opening were selected as factors in the orthogonal experiment. The results show that there is a positive correlation between the water plugging rate and <i>JRC</i>, and negative correlations between the water plugging rate and the initial water flow rate, gel time, and fracture opening. The change curve of the water flow rate is divided into three categories: Single platform decreasing type, double platform decreasing type, and multi-peak fluctuating type. The curve of seepage pressure contains three categories: Single peak type, multi-peak type and platform type. The results provide a reference for grouting in rock fractures.
topic chemical grouting
fracture
flowing water
water plugging rate
joint roughness coefficient
url https://www.mdpi.com/2076-3417/9/13/2762
work_keys_str_mv AT lichuangjin experimentalinvestigationonchemicalgroutinginapermeatedfracturereplicawithdifferentroughness
AT wanghuasui experimentalinvestigationonchemicalgroutinginapermeatedfracturereplicawithdifferentroughness
AT jialuxiong experimentalinvestigationonchemicalgroutinginapermeatedfracturereplicawithdifferentroughness
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