青海高原龙穆尔沟红层滑坡变形机制的地质分析与模型试验研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1567 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Taking the Ditch-Moore #DH6 landslide in Xijiu road(S101) as typical representation，the deformation mechanism of red bed landslide at Qinghai Plateau affected by valley incision and rainfall infiltration was studied by geological analysis and geotechnical model test. In geomechanical model test，slope excavation is used to simulate the valley incision；and the technique of capillary infiltration is used to simulate the rainfall infiltration. Displacement is an important index of the test. The influence of valley incision and rainfall infiltration on slope displacement are analyzed separately；then a comprehensive analysis of two factors is made；and the roles of two weights are analyzed. The results indicate that valley incision and rainfall infiltration play important roles in the deformation of red bed landslide. The root causes of slope deformation are two strength degradation process based on special ground nature of red bed：(1) Unloading relaxation caused by valley incision(the first intensity attenuation) and the invading surface are the basis for the emergence of landslide；(2) Long-term softening of rock mass strength induced by rainwater infiltration(second intensity decay) is the direct cause of landslide development. Therefore，the mechanism of the red bed landslide is summarized as “the original landscape→valley incision→valley slope relaxation→geotechnical strength decay→rainfall infiltration→geotechnical strength decay further→overall slip”by comprehensive analysis as the representative to the Ditch-Moore #DH6 landslide.

Key words： slope engineering red bed landslide deformation mechanism valley incision rainfall infiltration geological analysis geomechanical model experiment

Received: 13 May 2010

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

http://www.rockmech.org/EN/Y2010/V29/I10/2094

[2]	骆银辉，朱春林，李俊东. 云南红层边坡变形破坏机制及其危害防治研究[J]. 岩土力学，2003，24(5)：836-839.(LUO Yinhui，ZHU Chunlin，LI Jundong. Research for distortion-destruction mechanism of slopes of red strata in Yunnan Province and their hazard control[J]. Rock and Soil Mechanics，2003，24(5)：836-839.(in Chinese)) " target="_blank">
[5]	左保成，陈从新，刘小巍，等. 反倾岩质边坡破坏机制模型试验研究[J]. 岩石力学与工程学报，2005，24(19)：3 505-3 511.(ZUO Baocheng，CHEN Congxin，LIU Xiaowei，et al. Modeling experiment study on failure mechanism of counter-tilt rock slope[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(19)：3 505-3 511.(in Chinese)) " target="_blank">
[3]	程强，周永江，黄绍槟. 近水平红层开挖边坡变形破坏特征[J]. 岩土力学，2004，25(8)：1 311-1 314.(CHENG Qiang，ZHOU Yongjiang，HUANG Shaobin. Distortion and failure character of excavation slope in approximate level red beds[J]. Rock and Soil Mechanics，2004，25(8)：1 311-1 314.(in Chinese)) " target="_blank">
[6]	左保成，陈从新，刘才华，等. 相似材料试验研究[J]. 岩土力学，2004，25(11)：1 805-1 808.(ZUO Baocheng，CHEN Congxin，LIU Caihua，et al. Research on similar material[J]. Rock and Soil Mechanics，2004，25(11)：1 805-1 808.(in Chinese)) " target="_blank">
[7]	陶志平，周德培. 用抗滑桩整治滑坡地段隧道变形的模型试验研究[J]. 岩石力学与工程学报，2004，23(3)：457-460.(TAO Zhiping，ZHOU Depei. Model testing research on controlling tunnel deformation in landslide field with antislide piles[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(3)：457-460.(in Chinese))
[9]	沈泰. 地质力学模型试验技术的进展[J]. 长江科学院院报，2001，18(5)：32-35.(SHEN Tai. Development of geomechanical model experiment techniques[J]. Journal of Yangtze River Scientific Research Institute，2001，18(5)：32-35.(in Chinese))
[10]	刘志杰，孙永军. 青藏高原隆升与黄河形成演化[J]. 地理与地理信息科学，2007，23(1)：79-82.(LIU Zhijie，SUN Yongjun. Uplift of the Qinghai—Tibet plateau and formation，evolution of the Yellow River[J]. Geography and Geo-Information Science，2007，23(1)：79-82.(in Chinese)) " target="_blank">
[12]	宋克强，崔中兴，袁继国，等. 古刘滑坡的蠕变特征及其预报分析[J]. 岩土工程学报，1994，16(4)：56-64.(SONG Keqiang，CUI Zhongxing，YUAN Jiguo，et al. Creep characteristics analysis and prediction of Guliu landslide[J]. Chinese Journal of Geotechnical Engineering，1994，16(4)：56-64.(in Chinese))
[13]	陈有亮，徐梁. 水与岩体的耦合作用及其对高边坡稳定性的影响[J]. 上海大学学报(自然科学版)，2000，8(3)：273-277.(CHEN Youliang，XU Liang. Effect of coupling between rock mass and water and its influence upon stability of rock slope[J]. Journal of Shanghai University(Natural Science)，2000，8(3)：273-277.(in Chinese)) " target="_blank">
[14]	王恭先，徐峻龄，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.(WANG Gongxian，XU Junling，LIU Guangdai，et al. Land slidology and technique of landslide control[M]. Beijing：China Railway Publishing House，2004.(in Chinese)) " target="_blank">
[16]	韩丽芳，王运生，王晓欣，等. 龙泉山地区中生代红层水岩作用时效性实验研究[J]. 水文地质工程地质，2009，36(6)：59-61.(HAN Lifang，WANG Yunsheng，WANG Xiaoxin，et al. Experimental research on the time effect of water-rock interaction of the Mesozoic red bed in Longquan mountain area[J]. Hydrogeology and Engineering Geology，2009，36(6)：59-61.(in Chinese)) " target="_blank">
[1]	程强，寇小兵，黄绍槟，等. 中国红层的分布及地质环境特征[J]. 工程地质学报，2004，12(1)：34-40.(CHENG Qiang，KOU Xiaobing，HUANG Shaobin，et al. The distributions and geologic environment characteristics of red beds in China[J]. Journal of Engineering Geology，2004，12(1)：34-40.(in Chinese))
[4]	程强，周德培，寇小兵. 红层软岩地区公路建设中的主要岩土工程问题[C]// 第8次全国岩石力学与工程学术大会论文集. 北京：科学出版社，2004：128-131.(CHENG Qiang，ZHOU Depei，KOU Xiaobing. The main geotechnical engineering problems of highway construction in red beds[C]// Proceedings of the 8th National Conference on Rock Mechanics and Engineering. Beijing：Science Press，2004：128-131.(in Chinese)) " target="_blank">
[8]	陈安敏，顾金才，沈俊，等. 地质力学模型试验技术应用研究[J]. 岩石力学与工程学报，2004，23(22)：3 785-3 789.(CHEN Anmin，GU Jincai，SHEN Jun，et al. Application study on the geomechanical model experiment techniques[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(22)：3 785-3 789.(in Chinese)) " target="_blank">
[11]	杨达源，吴胜光，王云飞. 黄河上游的阶地与水系变迁[J]. 地理科学，1996，16(2)：137-143.(YANG Dayuan，WU Shengguang，WANG Yunfei. On river terraces of the upper reaches of Yellow River and the change of the river system[J]. Scientia Geographica Sinica，1996，16(2)：137-143.(in Chinese))
[15]	刘世雄，冯君，刘东. 第三系红层滑坡机制物理模型研究[J]. 路基工程，2009，(6)：174-176.(LIU Shixiong，FENG Jun，LIU Dong. Physical model of tertiary system red bed landslide[J]. Subgrade Engineering，2009，(6)：174-176.(in Chinese)) " target="_blank">