Experimental Study on Flow Characteristics of Aeolian Sand in Fractures
It is one of the important safety problems in the process of mining shallow coal seams in western China that the rock mass affected by mining stress breaks and forms a penetrating fracture, leading to a sand burst in the working face. The self-developed test system is used to carry out the experimen...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6665589 |
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| author | Jiarui Chen Wenhu Gu Jihua Zhang Jitao Tang Zhengzheng Cao Jingke Wu Jianxiong Liu Weizhong He Fang Shi |
| author_facet | Jiarui Chen Wenhu Gu Jihua Zhang Jitao Tang Zhengzheng Cao Jingke Wu Jianxiong Liu Weizhong He Fang Shi |
| author_sort | Jiarui Chen |
| collection | DOAJ |
| description | It is one of the important safety problems in the process of mining shallow coal seams in western China that the rock mass affected by mining stress breaks and forms a penetrating fracture, leading to a sand burst in the working face. The self-developed test system is used to carry out the experimental study on the flow characteristics of Aeolian sand in fractures. The research work is focused on the influence of several parameters, such as the thickness of the Aeolian sand layer, the fracture opening, and the fracture dip angle on the velocity of sand particles in fractures. The results show the following: (1) The influence of fracture opening and fracture angle on sand burst rate is much greater than that of sand thickness. No matter what the fracture angle and fracture opening value are, the influence weight of sand thickness on sand burst rate is almost zero. (2) When other conditions are unchanged, with the increase of fracture dip angle, the sand burst rate increases significantly, and the relationship between the sand burst rate and the fracture dip angle is exponential. (3) The influence weight of fracture opening is the largest. With the increase of fracture opening, the sand burst rate increases logarithmically. Finally, according to the test results, the relation equation which can simultaneously describe the influence of fracture opening and fracture inclination on the rate of the sand burst is fitted. This study can provide a theoretical basis and scientific guidance for the prevention and control of coal mine sand inrush disasters caused by roof cracking in western coal mines. |
| format | Article |
| id | doaj-art-ad371d0fc6f548bd92a5fe26ca0e88d9 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-ad371d0fc6f548bd92a5fe26ca0e88d92025-02-03T06:43:27ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/66655896665589Experimental Study on Flow Characteristics of Aeolian Sand in FracturesJiarui Chen0Wenhu Gu1Jihua Zhang2Jitao Tang3Zhengzheng Cao4Jingke Wu5Jianxiong Liu6Weizhong He7Fang Shi8Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223001, ChinaFaculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223001, ChinaFaculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223001, ChinaFaculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223001, ChinaInternational Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention, Henan Polytechnic University, Jiaozuo 454003, ChinaFaculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223001, ChinaFaculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223001, ChinaFaculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223001, ChinaJiangsu Key Laboratory of Advanced Manufacturing Technology, Huaiyin Institute of Technology, Huai’an, Jiangsu 223003, ChinaIt is one of the important safety problems in the process of mining shallow coal seams in western China that the rock mass affected by mining stress breaks and forms a penetrating fracture, leading to a sand burst in the working face. The self-developed test system is used to carry out the experimental study on the flow characteristics of Aeolian sand in fractures. The research work is focused on the influence of several parameters, such as the thickness of the Aeolian sand layer, the fracture opening, and the fracture dip angle on the velocity of sand particles in fractures. The results show the following: (1) The influence of fracture opening and fracture angle on sand burst rate is much greater than that of sand thickness. No matter what the fracture angle and fracture opening value are, the influence weight of sand thickness on sand burst rate is almost zero. (2) When other conditions are unchanged, with the increase of fracture dip angle, the sand burst rate increases significantly, and the relationship between the sand burst rate and the fracture dip angle is exponential. (3) The influence weight of fracture opening is the largest. With the increase of fracture opening, the sand burst rate increases logarithmically. Finally, according to the test results, the relation equation which can simultaneously describe the influence of fracture opening and fracture inclination on the rate of the sand burst is fitted. This study can provide a theoretical basis and scientific guidance for the prevention and control of coal mine sand inrush disasters caused by roof cracking in western coal mines.http://dx.doi.org/10.1155/2021/6665589 |
| spellingShingle | Jiarui Chen Wenhu Gu Jihua Zhang Jitao Tang Zhengzheng Cao Jingke Wu Jianxiong Liu Weizhong He Fang Shi Experimental Study on Flow Characteristics of Aeolian Sand in Fractures Advances in Civil Engineering |
| title | Experimental Study on Flow Characteristics of Aeolian Sand in Fractures |
| title_full | Experimental Study on Flow Characteristics of Aeolian Sand in Fractures |
| title_fullStr | Experimental Study on Flow Characteristics of Aeolian Sand in Fractures |
| title_full_unstemmed | Experimental Study on Flow Characteristics of Aeolian Sand in Fractures |
| title_short | Experimental Study on Flow Characteristics of Aeolian Sand in Fractures |
| title_sort | experimental study on flow characteristics of aeolian sand in fractures |
| url | http://dx.doi.org/10.1155/2021/6665589 |
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