Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction
It is an effective method to reduce the risk of floor water inrush by grouting reconstruction and sealing of water channel on top of Ordovician limestone before deep confined water mining in Huabei type coal mine in China. The basic properties of fly-ash cement materials with different ratios were t...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Coal Science and Technology
2025-05-01
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| Series: | Meitan kexue jishu |
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| Online Access: | http://www.mtkxjs.com.cn/article/doi/10.12438/cst.2024-0375 |
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| author | Zhenli FAN Lutong CAO Fengda ZHANG Xiwen YIN Qiuyang ZHAO Zhiwei ZHANG |
| author_facet | Zhenli FAN Lutong CAO Fengda ZHANG Xiwen YIN Qiuyang ZHAO Zhiwei ZHANG |
| author_sort | Zhenli FAN |
| collection | DOAJ |
| description | It is an effective method to reduce the risk of floor water inrush by grouting reconstruction and sealing of water channel on top of Ordovician limestone before deep confined water mining in Huabei type coal mine in China. The basic properties of fly-ash cement materials with different ratios were tested using the orthogonal test method, in accordance with the requirements of deep medium to strong pervious limestone grouting project in Zhuozishan coal field. Subsequently, the influences of three factors, water-solid ratio, solid ratio and temperature, on six indexes of slurry density, viscosity, water extraction rate, setting rate, setting time and mechanical strength were analyzed. The results show that the ratio of water to solid has a relatively prominent effect on 6 indexes of slurry. The solid ratio has great influence on the viscosity, setting time and mechanical strength of the slurry. The effect of temperature on the performance of the slurry is relatively small. The pressure boosting process of ground grouting holes is divided into three stages: low-pressure filling, medium-pressure diffusion, and high-pressure fracture extension and reinforcement. The grouting material ratio varies across different stages of grouting. The comprehensive balance method yielded three material ratio schemes tailored for various grouting stages. The optimal grouting material ratio is applied for the grouting renovation of medium-strong pervious limestone. Engineering practice demonstrates that the slurry effectively diffuses and fills cracks in the formation, essentially intercepting the vertical water channel exposed at the top of the Ordovician limestone. It reduces the risk of water inflow on the working face and provides technical support for regional grouting treatment projects targeting the top of the Ordovician limestone. |
| format | Article |
| id | doaj-art-4709c8db9737415ea697914ae6937fcf |
| institution | OA Journals |
| issn | 0253-2336 |
| language | zho |
| publishDate | 2025-05-01 |
| publisher | Editorial Department of Coal Science and Technology |
| record_format | Article |
| series | Meitan kexue jishu |
| spelling | doaj-art-4709c8db9737415ea697914ae6937fcf2025-08-20T02:03:16ZzhoEditorial Department of Coal Science and TechnologyMeitan kexue jishu0253-23362025-05-0153527729010.12438/cst.2024-03752024-0375Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstructionZhenli FAN0Lutong CAO1Fengda ZHANG2Xiwen YIN3Qiuyang ZHAO4Zhiwei ZHANG5CCTEG Coal Mining Research Institute, Beijing 100013, ChinaCCTEG Coal Mining Research Institute, Beijing 100013, ChinaCCTEG Coal Mining Research Institute, Beijing 100013, ChinaCCTEG Coal Mining Research Institute, Beijing 100013, ChinaCCTEG Coal Mining Research Institute, Beijing 100013, ChinaCCTEG Coal Mining Research Institute, Beijing 100013, ChinaIt is an effective method to reduce the risk of floor water inrush by grouting reconstruction and sealing of water channel on top of Ordovician limestone before deep confined water mining in Huabei type coal mine in China. The basic properties of fly-ash cement materials with different ratios were tested using the orthogonal test method, in accordance with the requirements of deep medium to strong pervious limestone grouting project in Zhuozishan coal field. Subsequently, the influences of three factors, water-solid ratio, solid ratio and temperature, on six indexes of slurry density, viscosity, water extraction rate, setting rate, setting time and mechanical strength were analyzed. The results show that the ratio of water to solid has a relatively prominent effect on 6 indexes of slurry. The solid ratio has great influence on the viscosity, setting time and mechanical strength of the slurry. The effect of temperature on the performance of the slurry is relatively small. The pressure boosting process of ground grouting holes is divided into three stages: low-pressure filling, medium-pressure diffusion, and high-pressure fracture extension and reinforcement. The grouting material ratio varies across different stages of grouting. The comprehensive balance method yielded three material ratio schemes tailored for various grouting stages. The optimal grouting material ratio is applied for the grouting renovation of medium-strong pervious limestone. Engineering practice demonstrates that the slurry effectively diffuses and fills cracks in the formation, essentially intercepting the vertical water channel exposed at the top of the Ordovician limestone. It reduces the risk of water inflow on the working face and provides technical support for regional grouting treatment projects targeting the top of the Ordovician limestone.http://www.mtkxjs.com.cn/article/doi/10.12438/cst.2024-0375grouting materialorthogonal testslurry ratioregional control of water damagefloor water damage control |
| spellingShingle | Zhenli FAN Lutong CAO Fengda ZHANG Xiwen YIN Qiuyang ZHAO Zhiwei ZHANG Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction Meitan kexue jishu grouting material orthogonal test slurry ratio regional control of water damage floor water damage control |
| title | Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction |
| title_full | Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction |
| title_fullStr | Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction |
| title_full_unstemmed | Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction |
| title_short | Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction |
| title_sort | optimal selection test of material ratio in the top of ordovician limestone grouting reconstruction |
| topic | grouting material orthogonal test slurry ratio regional control of water damage floor water damage control |
| url | http://www.mtkxjs.com.cn/article/doi/10.12438/cst.2024-0375 |
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