| Citation: |
WANG Yuke, CHEN Hao, FENG Xinglei, CHEN Ming, WANG Donghui. 2019. Sedimentary characteristics and engineering geological significance of the middle Pleistocene Hejiang Formation in the eastern suburb platform on the Chengdu Plain, Sichuan. Sedimentary Geology and Tethyan Geology, 39(3): 33-39.
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Sedimentary characteristics and engineering geological significance of the middle Pleistocene Hejiang Formation in the eastern suburb platform on the Chengdu Plain, Sichuan
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Abstract
The integration of depositional sequences, grain sizes and gravels has disclosed that the middle Pleistocene Hejiang Formation (Qh2hj) strata in the eastern suburb platform on the Chengdu Plain, Sichuan are classified into the fluvial deposits, vertically with typical "fluvial binary architectures". The deposits are dominated by the fine-grained deposits, and the basal gravels are made up of pebbles and cobbles with good roundness and orientation. The sedimentary microfacies in the Hejiang Formation comprise the channel, point bar, bankfloodplain microfacies, corresponding to three lithofacies types and four lithofacies associations. The channel gravel lithofacies shows the NW to SE-trending distribution in the Shilingzhen-Honghezhen-Damianzhen zone. The point bar lithofacies is limited to the low relief of the palaeochannel in the eastern part of the Damianzhen-Xihezhen region. The bank-floodplain claystone lithofacies widely occur throughout the study area. On the whole, the abovementioned sedimentary microfacies have different effects on the local engineering construction. The water erosion within the channel gravel beds as the groundwater reservoirs may lead to the instablility of the stratigraphic architentures and thus have the effects on the selection of the engineering stability technology. Due to the limited distribution, the point bar deposits may have the least influence on the local engineering construction. The bankfloodplain clay deposits as the soft beds may reduce the stability of slope and bars. -
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References
[1] 张茂省, 董英, 刘洁. 论新型城镇化中的城市地质工作[J]. 兰州大学学报(自科版), 2014, 50(5):581-587. [2] 张茂省, 王化齐, 王尧, 等中国城市地质调查进展与展望[J]. 西北地质, 2018, 51(4):5-13. [3] 张倬元. 工程地质分析原理[M]. 北京:地质出版社, 1981. [4] 杨继瑞, 李月起, 汪锐. 川渝地区:"一带一路"和长江经济带的战略支点[J]. 经济体制改革, 2015,(4):58-64. [5] 关丽丽.《成渝经济区区域规划》 对成都发展的影响分析[J]. 成都大学学报(社会科学版), 2011,(6):25-27. [6] 李永昭, 郭兵. 成都平原的晚新声带构造[J]. 成都理工大学学报(自然科学版), 2008, 35(4):371-376. [7] 汪波, 聂前勇, 王运生, 等. 也论成都粘土的成因[J]. 地质灾害与环境保护, 2002, 13(1):54-56. [8] 王凤林, 李勇, 李永昭, 等. 成都盆地新生代大邑砾岩的沉积特征[J]. 成都理工大学学报(自然科学版), 2003, 30(2):139-146. [9] 梁明剑, 李大虎, 郭红梅, 等. 成都盆地南缘第四纪构造变形及地貌响应特征[J]. 地震工程学报, 2014, 36(1):98-106. [10] 李勇,黎兵,Stenffen D. 等. 青藏高原东缘晚新生代成都盆地物源分析与水系演化[J]. 沉积学报, 2006, 24(3):309-320. [11] 陈杰, 李佑国, 崔志强. 等. 成都盆地南缘与新构造运动有关的河道演变及其对沉积作用影响初步探讨[J]. 资源调查与环境, 2008, 29(1):18-23. [12] 李勇, 曾允孚, 尹海生, 等. 龙门山前陆盆地沉积及构造演化[M]. 成都:成都科技大学出版社,1995. [13] 陈旭, 陈兴海, 雷通文. 成都盆地西缘第四纪砾石层成因及其工程特性研究[J]. 路基工程, 2012, 5:32-35. [14] 何强, 李录明, 赖敏, 等. 凤凰山地区浦江-新津-德阳隐伏断裂反射波法地震勘探与断裂活动性研究[J]. 地震地质, 2004, 26(4):706-713. [15] 钱洪, 唐荣昌, 马声浩. 蒲江-新津-成都-德阳断裂带——成都平原内一条代表性弱活动地震带的地震特征[J]. 四川地震,1992,4:17-23. [16] 谢宗奎. 柴达木台南地区第四系细粒沉积岩相与沉积模式研究[J]. 地学前缘, 2009, 16(5):245-250. [17] 王全伟,朱兵,梁斌,等. 成都市幅1:25万区域地质调查报告[R]. 成都:四川省地质调查院,2013. [18] 于兴河, 王德发. 陆相断陷盆地三角洲相构形要素及其储层地质模型[J]. 地质论评, 1997, 43(3):225-231. -
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WANG Yuke, CHEN Hao, FENG Xinglei, CHEN Ming, WANG Donghui. 2019. Sedimentary characteristics and engineering geological significance of the middle Pleistocene Hejiang Formation in the eastern suburb platform on the Chengdu Plain, Sichuan. Sedimentary Geology and Tethyan Geology, 39(3): 33-39.
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