| Effects of Lateral Variation in Vegetation and Basin ‘Dome’ Shape on Tropical Lowland Peat Stabilisation in the Kota Samarahan-Asajaya Area, West Sarawak, Malaysia |
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| 作者姓名： | Mohamad Tarmizi Mohamad ZULKIFLEY Tham Fatt NG John Kuna RAJ Roslan HASHIM and Muhammad Aqeel ASHRAF |
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| 作者单位： | 1 Department of Geology, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
2 Department of Civil Engineering, Faculty of Science, University of Malaya,50603, Kuala Lumpur, Malaysia |
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| 基金项目： | The authors also acknowledge the IPPP grant PV018-2011A for financial support from the University of Malaya. |
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| 摘 要： | Field surveys indicate lateral variation in peat humification levels （von Post） in dominantly occurring fibric,fibric to hemic,sapric and hemie to sapric peats across a gradient from the margin towards the centre of tropical lowland peat domes.Cement-peat stabilisation can be enhanced by adding mineral soil fillers （silt,clays and fine sands） obtained from Quaternary floodplain deposits and residual soil （weathered schist）.The unconfined compressive strength （UCS） of the stabilised cement-mineral soil fifler-peat mix increases with the increased addition of selected mineral soil filler.Lateral variation in the stabilised peat strength （UCS） in the top 0 to 0.5 m layer was found from the margin towards the centre of the tropical lowland peat dome.The variations in the UCS of stabilised tropical lowland peats along a gradient from the periphery towards the centre of the peat dome are most likely caused by a combination of factors due to variations in the mineral soil or ash content of the peat and horizontal zonation or lateral variation in the dominant species of the plant assemblages （due to successive vegetation zonation of the peat swamp forest from the periphery towards the centre of the tropical lowland peat dome）.
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| 关 键 词： | 泥炭沼泽 水泥稳定 低地 热带 植被变化 马来西亚 无侧限抗压强度 沙捞越 |
| 收稿时间： | 2013/6/23 0:00:00 |
| 修稿时间： | 2014/1/25 0:00:00 |
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