An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone
To study the effects of compression rate and weight ratio of sandstone to mudstone on permeability, water flow tests were performed on crushed rocks using an in-house designed and built water flow apparatus. Seepage properties of sandstone and mudstone were tested on specimens under six axial displa...
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| Format: | Article |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/6537571 |
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| author | Qi-Le Ding Shuai-Bing Song |
| author_facet | Qi-Le Ding Shuai-Bing Song |
| author_sort | Qi-Le Ding |
| collection | DOAJ |
| description | To study the effects of compression rate and weight ratio of sandstone to mudstone on permeability, water flow tests were performed on crushed rocks using an in-house designed and built water flow apparatus. Seepage properties of sandstone and mudstone were tested on specimens under six axial displacement levels. The weight ratios of the six specimens of sandstone to mudstone were set to 1 : 0, 4 : 1, 3 : 2, 2 : 3, 1 : 4, and 0 : 1. A non-Darcy law was adopted to calculate the permeability in the experiments based on verification of the Reynolds number. Non-Darcy flow is found to be most significant when the axial displacement or mudstone content increases. The permeability in the experiments is found to be in the range of 9.1 × 10−15–9.492 × 10−13 m2, which is calculated from a quadratic polynomial fit between the flow velocity and pressure gradient. A compression rate of 28.6% and weight ratio of sandstone to mudstone of 60% are found to be key values affecting permeability. When the axial displacement of specimen A (1 : 0) increases from 10 mm to 30 mm, the compression rate (ratio of axial displacement to original specimen height) increases from 9.5% to 28.6%, and the permeability decreases by 83.8% to 1.534 × 10−13 m2. When the axial displacement is 10 mm and the content of mudstone is increased from 0% to 60%, the permeability decreases by 77.1% to 2.172 × 10−13 m2. |
| format | Article |
| id | doaj-art-089ab57a960648cabae51a94261bd7e5 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
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| series | Advances in Civil Engineering |
| spelling | doaj-art-089ab57a960648cabae51a94261bd7e52025-02-03T05:48:27ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/65375716537571An Experimental Study of Seepage Properties in Crushed Sandstone and MudstoneQi-Le Ding0Shuai-Bing Song1School of Environment and Civil Engineering, Dongguan University of Technology, 523080 Dongguan, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 221116 Xuzhou, ChinaTo study the effects of compression rate and weight ratio of sandstone to mudstone on permeability, water flow tests were performed on crushed rocks using an in-house designed and built water flow apparatus. Seepage properties of sandstone and mudstone were tested on specimens under six axial displacement levels. The weight ratios of the six specimens of sandstone to mudstone were set to 1 : 0, 4 : 1, 3 : 2, 2 : 3, 1 : 4, and 0 : 1. A non-Darcy law was adopted to calculate the permeability in the experiments based on verification of the Reynolds number. Non-Darcy flow is found to be most significant when the axial displacement or mudstone content increases. The permeability in the experiments is found to be in the range of 9.1 × 10−15–9.492 × 10−13 m2, which is calculated from a quadratic polynomial fit between the flow velocity and pressure gradient. A compression rate of 28.6% and weight ratio of sandstone to mudstone of 60% are found to be key values affecting permeability. When the axial displacement of specimen A (1 : 0) increases from 10 mm to 30 mm, the compression rate (ratio of axial displacement to original specimen height) increases from 9.5% to 28.6%, and the permeability decreases by 83.8% to 1.534 × 10−13 m2. When the axial displacement is 10 mm and the content of mudstone is increased from 0% to 60%, the permeability decreases by 77.1% to 2.172 × 10−13 m2.http://dx.doi.org/10.1155/2019/6537571 |
| spellingShingle | Qi-Le Ding Shuai-Bing Song An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone Advances in Civil Engineering |
| title | An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone |
| title_full | An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone |
| title_fullStr | An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone |
| title_full_unstemmed | An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone |
| title_short | An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone |
| title_sort | experimental study of seepage properties in crushed sandstone and mudstone |
| url | http://dx.doi.org/10.1155/2019/6537571 |
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