{"title":"孤立覆岩注浆工作面突水识别与预测方法","authors":"Chaochao Wang, Jialin Xu, Dayang Xuan","doi":"10.1002/ese3.70154","DOIUrl":null,"url":null,"abstract":"<p>Isolated overburden grout injection (IOGI) is an economical and efficient green mining technology. During the grout injection process, a large amount of slurry bled water will enter the underlying rock strata below the grouting layer. Under certain conditions, the slurry bled water may seep along the overlying rock layer into the water-conducting fractured zone (WCFZ), resulting in the increase of water inrush in the working face, which affects the production safety and the grouting effectiveness. Therefore, it is urgent to establish the prediction model of working face water inrush and establish a safe grouting layer selection method to prevent the grouting water from entering the working face in the process of grouting filling. In this article, a new identification and prediction method of working face water inrush of IOGI were proposed. According to the characteristics of seepage boundary, a “semi-ellipsoid” theoretical model of seepage boundary of slurry bled water was established, and a dimensionless Formula of the model parameters was constructed. The dimensionless Formula was solved based on the experimental results of influencing factors of seepage boundary. Based on the distribution characteristics of free water in grouting filling, the identification and prediction method of working face water inrush of IOGI were established. The prediction method was analyzed to the actual mine, and the correctness of the prediction method was verified. Using the proposed prediction method, a selection method of grouting layer (the distance between grouting layer and coal seam roof > seepage boundary |<i>c</i>| + the height of WCFZ <i>H</i><sub><i>d</i></sub>) was given to ensure that the slurry bled water will not enter the working face during the grout injection process. So as to ensure the effective implementation of grout injection work.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"4046-4058"},"PeriodicalIF":3.4000,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70154","citationCount":"0","resultStr":"{\"title\":\"Identification and Prediction Method of Working Face Water Inrush of Isolated Overburden Grout Injection\",\"authors\":\"Chaochao Wang, Jialin Xu, Dayang Xuan\",\"doi\":\"10.1002/ese3.70154\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Isolated overburden grout injection (IOGI) is an economical and efficient green mining technology. During the grout injection process, a large amount of slurry bled water will enter the underlying rock strata below the grouting layer. Under certain conditions, the slurry bled water may seep along the overlying rock layer into the water-conducting fractured zone (WCFZ), resulting in the increase of water inrush in the working face, which affects the production safety and the grouting effectiveness. Therefore, it is urgent to establish the prediction model of working face water inrush and establish a safe grouting layer selection method to prevent the grouting water from entering the working face in the process of grouting filling. In this article, a new identification and prediction method of working face water inrush of IOGI were proposed. According to the characteristics of seepage boundary, a “semi-ellipsoid” theoretical model of seepage boundary of slurry bled water was established, and a dimensionless Formula of the model parameters was constructed. The dimensionless Formula was solved based on the experimental results of influencing factors of seepage boundary. Based on the distribution characteristics of free water in grouting filling, the identification and prediction method of working face water inrush of IOGI were established. The prediction method was analyzed to the actual mine, and the correctness of the prediction method was verified. Using the proposed prediction method, a selection method of grouting layer (the distance between grouting layer and coal seam roof > seepage boundary |<i>c</i>| + the height of WCFZ <i>H</i><sub><i>d</i></sub>) was given to ensure that the slurry bled water will not enter the working face during the grout injection process. So as to ensure the effective implementation of grout injection work.</p>\",\"PeriodicalId\":11673,\"journal\":{\"name\":\"Energy Science & Engineering\",\"volume\":\"13 8\",\"pages\":\"4046-4058\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2025-06-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70154\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy Science & Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://scijournals.onlinelibrary.wiley.com/doi/10.1002/ese3.70154\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Science & Engineering","FirstCategoryId":"5","ListUrlMain":"https://scijournals.onlinelibrary.wiley.com/doi/10.1002/ese3.70154","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Identification and Prediction Method of Working Face Water Inrush of Isolated Overburden Grout Injection
Isolated overburden grout injection (IOGI) is an economical and efficient green mining technology. During the grout injection process, a large amount of slurry bled water will enter the underlying rock strata below the grouting layer. Under certain conditions, the slurry bled water may seep along the overlying rock layer into the water-conducting fractured zone (WCFZ), resulting in the increase of water inrush in the working face, which affects the production safety and the grouting effectiveness. Therefore, it is urgent to establish the prediction model of working face water inrush and establish a safe grouting layer selection method to prevent the grouting water from entering the working face in the process of grouting filling. In this article, a new identification and prediction method of working face water inrush of IOGI were proposed. According to the characteristics of seepage boundary, a “semi-ellipsoid” theoretical model of seepage boundary of slurry bled water was established, and a dimensionless Formula of the model parameters was constructed. The dimensionless Formula was solved based on the experimental results of influencing factors of seepage boundary. Based on the distribution characteristics of free water in grouting filling, the identification and prediction method of working face water inrush of IOGI were established. The prediction method was analyzed to the actual mine, and the correctness of the prediction method was verified. Using the proposed prediction method, a selection method of grouting layer (the distance between grouting layer and coal seam roof > seepage boundary |c| + the height of WCFZ Hd) was given to ensure that the slurry bled water will not enter the working face during the grout injection process. So as to ensure the effective implementation of grout injection work.
期刊介绍:
Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.