长宁页岩气田区某丛式井场滑坡变形特征及形成机制浅析
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摘要
本研究结合长宁页岩气田区某丛式井场滑坡的地质环境条件、物质结构和变形特征,根据古滑坡体存在的地质现象,对工程滑坡形成的力学机制和发展演化过程展开分析讨论。初步认为该滑坡是在古滑坡的滑覆堆积体上发展而来,滑坡启动时具有牵引式滑裂变形破坏特征,并逐渐向推移式塑性挤压变形模式转变,形成了滑坡由牵引式向推移式转化的力学机制演变过程。人类工程活动是该滑坡的最直接的主要诱发因素。充分认识滑坡的变形特征和形成机制,有利于正确指导滑坡治理措施选择和工程布局,对区域内建设场地选址和同类型工程滑坡治理具有借鉴意义。
Combining with the geological environment conditions, material structure and deformation characteristics of a cluster well field landslide in Changning shale gas area, According to the rock and soil signs and geological phenomena existing in the ancient landslide, the mechanical mechanism and the development and evolution process of the formation of the engineering landslide are divided into Analysis of the discussion. The landslide is initially thought to be a slippery mouse in the ancient landslide. Developed on a stacked body with traction slip fission at the start of the landslide. The shape failure is straight, and gradually changes to the plastic extrusion deformation mode, which constitutes the force of the landslide transformation from the traction to the transition type. The evolution of the learning mechanism, and human engineering activities have become the most direct main predisposing factors for the occurrence of the landslide. Fully understand the change of landslide. The first-form characteristics and formation mechanism are helpful to guide the selection of landslide control measures and project layout correctly, and to locate the site of construction sites in the area. And the same type of engineering landslide management has reference significance.
Combining with the geological environment conditions, material structure and deformation characteristics of a cluster well field landslide in Changning shale gas area, According to the rock and soil signs and geological phenomena existing in the ancient landslide, the mechanical mechanism and the development and evolution process of the formation of the engineering landslide are divided into Analysis of the discussion. The landslide is initially thought to be a slippery mouse in the ancient landslide. Developed on a stacked body with traction slip fission at the start of the landslide. The shape failure is straight, and gradually changes to the plastic extrusion deformation mode, which constitutes the force of the landslide transformation from the traction to the transition type. The evolution of the learning mechanism, and human engineering activities have become the most direct main predisposing factors for the occurrence of the landslide. Fully understand the change of landslide. The first-form characteristics and formation mechanism are helpful to guide the selection of landslide control measures and project layout correctly, and to locate the site of construction sites in the area. And the same type of engineering landslide management has reference significance.
引文
[1] 沈开俊,刘严松,何政伟.四川兴文县滑坡发育特征及影响因素分析[J].中国地质灾害与防治学报,2007.18(4):120-122.
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[4] 卿三惠,黄润秋.工程滑坡形成机理及防治对策[J].中国地质灾害与防治学报,2005.16(3):1-4.
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[8] 杨光华,钟志辉,张玉成,等.滑坡灾害的机制与力学特性分析[J].岩石力学与工程学报,2016.35(2):4009-4017.
[9] 许强,汤明高,徐开祥,等.滑坡时空演化规律及预警预报研究[J].岩石力学与工程学报,2008,27(6):1104-1112.
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[11] 张永双,吴瑞安,郭长宝.古滑坡复活问题研究进展与展望[J].地球科学进展,2018,33(7):728-739.
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[13] 四川省地质工程勘察院.长宁页岩气田区某丛式井站滑坡工程地质勘察报告[R].2018.4.
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[15] 张倬元,王士天,王兰生,等.工程地质分析原理(第二版)[M].北京:地质出版社,2005:310-314.
[2] 兴文县国土资源局.兴文县2009年地质灾害防御预案[R].2009.
[3] 徐峻龄.葡萄园1号滑坡力学机制分析及其启示[J].路基工程,1989,(2):38-42.
[4] 卿三惠,黄润秋.工程滑坡形成机理及防治对策[J].中国地质灾害与防治学报,2005.16(3):1-4.
[5] 郑玉元,覃仁辉.公路工程滑坡的形成机理及其稳定性分析——以贵开线K4+450～K4+780为例[J].贵州地质,2003.20(4):234-238.
[6] 吴香根.工程滑坡滑带土抗剪强度与地形坡度的关系[J],地质灾害与环境保护,2000.11(2):145-146.
[7] 刘传正.南昆铁路八渡滑坡成因机理新认识[[J].水文地质工程地质,2007,34(3):1-4.
[8] 杨光华,钟志辉,张玉成,等.滑坡灾害的机制与力学特性分析[J].岩石力学与工程学报,2016.35(2):4009-4017.
[9] 许强,汤明高,徐开祥,等.滑坡时空演化规律及预警预报研究[J].岩石力学与工程学报,2008,27(6):1104-1112.
[10] 王涛,吴树仁,石菊松,等.国内外典型工程滑坡灾害比较[J].地质通报,2013,32(12):1881-1899.
[11] 张永双,吴瑞安,郭长宝.古滑坡复活问题研究进展与展望[J].地球科学进展,2018,33(7):728-739.
[12] 王恭先,徐峻岭,刘光代,等.滑坡学与滑坡防治技术[M].北京:中国铁道出版社,2004.
[13] 四川省地质工程勘察院.长宁页岩气田区某丛式井站滑坡工程地质勘察报告[R].2018.4.
[14] 陈哲希.土力学地基基础(第四版)[M].北京:清华大学出版社,2009:140-147.
[15] 张倬元,王士天,王兰生,等.工程地质分析原理(第二版)[M].北京:地质出版社,2005:310-314.
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