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Polymers
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Polymer Fluids in Geology and Geotechnical Engineering
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Polymer Fluids in Geology and Geotechnical Engineering

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: 31 January 2026 | Viewed by 157

Special Issue Editor

Dr. Feng Huang

E-Mail Website
Guest Editor
School of Engineering and Technology, China University of Geosciences Beijing, Beijing 100083, China
Interests: polymer materials; engineering applications; numerical modeling; theoretical analysis

Special Issue Information

Dear Colleagues,

This Special Issue focuses on polymer materials in geology and geotechnical engineering, aiming to collect high-quality research articles and reviews to advance the in-depth development and broad application of this field. As a critical method in geology and geotechnical engineering, polymer materials are widely used in foundation reinforcement, tunnel construction, slope stabilization, groundwater treatment, grouting, and other applications. It plays a vital role in enhancing engineering safety, stability, and durability.

In recent years, significant progress has been achieved in polymer materials, techniques, and performance evaluation, driven by advancements in material science and construction technology. This Special Issue seeks to comprehensively present these cutting-edge innovations, foster academic exchange and technical collaboration, and explore future directions for grouting technology.

Contributions are welcome on topics including, but not limited to, the following:

  • Development of Polymer Grouting Materials and Techniques: Novel grouting materials such as high-performance cement-based materials, chemical grouts, and bio-based grouts, and their physical/chemical properties and engineering applicability. Innovations in grouting methods, improvements in processes, and studies on parameter optimization.
  • Development of Polymer Materials in Drilling: Geological drilling fluid, petroleum drilling fluid, ultra deep drilling fluid, cementing material, advanced detection drilling in tunneling.
  • Case Studies: Practical applications of polymer fluids in geotechnical and geology projects.
  • Numerical Modeling and Theoretical Analysis: Numerical simulation of rheological properties, predictive models for grouting outcomes, and mechanistic studies on grouting-induced changes in stratum.

We cordially invite scholars, engineers, and researchers to submit their original work to contribute to the innovation and advancement of polymer materials in geology and geotechnical engineering.

Dr. Feng Huang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • polymer materials
  • grouting
  • drilling
  • engineering applications
  • numerical modeling
  • theoretical analysis

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Published Papers (1 paper)

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Research

20 pages, 5389 KB  
Article
Diffusion Behavior of Polyurethane Slurry for Simultaneous Enhancement of Reservoir Strength and Permeability Through Splitting Grouting Technology
by Xiangzeng Wang, Fengsan Zhang, Jinqiao Wu, Siqi Qiang, Bing Li and Guobiao Zhang
Polymers 2025, 17(18), 2513; https://doi.org/10.3390/polym17182513 - 17 Sep 2025
Abstract
A polyurethane slurry was developed to simultaneously enhance the strength and permeability of geological formations, differing from the conventional fracture grouting used for soft-soil reinforcement. Injected via splitting grouting, the slurry cures to form high-strength, highly permeable channels that increase reservoir permeability while [...] Read more.
A polyurethane slurry was developed to simultaneously enhance the strength and permeability of geological formations, differing from the conventional fracture grouting used for soft-soil reinforcement. Injected via splitting grouting, the slurry cures to form high-strength, highly permeable channels that increase reservoir permeability while improving mechanical stability (dual-enhanced stimulation). To quantify its diffusion behavior and guide field application, we built a splitting-grouting model using the finite–discrete element method (FDEM), parameterized with the reservoir properties of coalbed methane (CBM) formations in the Ordos Basin and the slurry’s measured rheology and filtration characteristics. Considering the stratified structures within coal rock formed by geological deposition, this study utilizes Python code interacting with Abaqus to divide the coal seam into coal rock and natural bedding. We analyzed the effects of engineering parameters, geological factors, and bedding characteristics on slurry–vein propagation patterns, the stimulation extent, and fracturing pressure. The findings reveal that increasing the grouting rate from 1.2 to 3.6 m3/min enlarges the stimulated volume and the maximum fracture width and raises the fracturing pressure from 26.28 to 31.44 MPa. A lower slurry viscosity of 100 mPa·s promotes the propagation of slurry veins, making it easier to develop multiple veins. The bedding-to-coal rock strength ratio controls crossing versus layer-parallel growth: at 0.3, veins more readily penetrate bedding planes, whereas at 0.1 they preferentially spread along them. Raising the lateral pressure coefficient from 0.6 to 0.8 increases the likelihood of the slurry expanding along the beddings. Natural bedding structures guide directional flow; a higher bedding density (225 lines per 10,000 m3) yields greater directional deflection and a more intricate fracture network. As the angle of bedding increases from 10° to 60°, the slurry veins are more susceptible to directional changes. Throughout the grouting process, the slurry veins can undergo varying degrees of directional alteration. Under the studied conditions, both fracturing and compaction grouting modes are present, with fracturing grouting dominating in the initial stages, while compaction grouting becomes more prominent later on. These results provide quantitative guidance for designing dual-enhanced stimulation to jointly improve permeability and mechanical stability. Full article
(This article belongs to the Special Issue Polymer Fluids in Geology and Geotechnical Engineering)
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