The formation mechanism of G132 landslide in China-Myanmar oil and gas pipeline (Myanmar Section) and its integrated control countermeasures
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摘要: 为有效提高油气管道地质灾害综合治理水平,结合中缅管道(国外段)G132滑坡的地质环境条件及近年来的滑坡持续变形特征,采用工程地质分析方法,详细分析研究沟道溯源引起的牵引式滑坡的成因机理,制定适宜的综合治理对策。通过滑坡演化模式分析,划分出沟道溯源牵引式滑坡演化的3个变形阶段,即冲沟下切和斜坡变形阶段、牵引滑动变形阶段及整体滑动变形阶段。基于滑坡的变形特征、成因机理和演化模式,针对性提出“分区分级支挡、拦源固床及截排结合”的工程综合治理对策,并分步分级地逐一实施,已经过多个汛期的考验,取得了良好工程效果。研究对控制和减少油气管道地质灾害、保护中缅管道安全运营具有一定意义,也可为将来类似沟道溯源引起的牵引式滑坡治理提供一定的参考和借鉴。Abstract: In order to effectively improve the comprehensive management level of geological disasters in oil and gas pipelines, the authors in this research adopted engineering geological analysis principles and methods to conduct a detailed analysis of the retrogressive landslide caused by gully source tracing, and formulate appropriate comprehensive management countermeasures, combined with the geological environmental conditions of G132 landslide in China-Myanmar Pipeline (Myanmar Section) and the continuous deformation characteristics of the landslide in recent years. Three deformation stages of the retrogressive landslide caused by gully source tracing were basically divided through the analysis of the landslide evolution model, including gully incision and slope deformation stage, the retrogressive sliding deformation stage and the overall sliding deformation stage. The practical and feasible integrated control counter measures of “zoning and graded retaining, source blocking and bed consolidation, and combination of interception and drainage” were put forward, based on the deformation characteristics, formation mechanism and evolution model of the landslide. This strategy has been implemented step by step, and it has passed through many flood seasons with good engineering results. This research could provide certain references for similar projects related to retrogressive landslides caused by gully source tracing in the future and has great significance in controlling and reducing geological disasters of oil and gas pipelines and protecting the safe operation of China Myanmar Pipelines.
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[1] 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(S2):4009-4017.
Yang G H,Zhong Z H,Zhang Y C,et al.Analysis of mechanism and mechanical characteristics of landslide disaster[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(S2):4009-4017.
[2] 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.
Qing S H,Huang R Q.Formation mechanism of engineering landslide and control counter measures[J].The Chinese Journal of Geological Hazard and Control,2005,16(3):1-4.
[3] 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(5):1-5.
LIU C Z.A new discussion about genesis and failure mechanism of Badu landslides in Nanning-Kunming railway[J].Hydrogeology & Engineering Geology,2007,34(5):1-5.
[4] 王忠禹,佟智强,杨洪祥,等.牡丹江市青梅东山牵引式滑坡特征与成因机制分析[J].城市地质,2021,16(3):287-293.
Wang Z Y,Tong Z Q,Yang H X.Traction landslide at east slope of Qingmei mountain in Mudanjiang city[J].Urban Geology,2021,16(3):287-293.
[5] 陈文胜,尹哲彬,罗迎迎.基于条分法原理的牵引式滑坡分析方法研究[J].交通科学与工程,2019,35(3):1-5.
Chen W S,Yin Z B,Luo Y Y.Research on tractive landslide analysis method based on slice method[J].Transportation Science and Engineering,2019,35(3):1-5.
[6] 孙立娟. 基于滑带软化的牵引式滑坡渐进失稳机理及其演化试验研究[D].成都:西南交通大学,2019.Sun L J.Experimental Study on the Progressive Instability Mechanism and Evolution of Traction Landslides Based on Sliding Belt Softening[D].Chengdu:Southwest Jiaotong University,2019.
[7] 李效萌,李甜,刘金辉,等.赣东地区小型牵引式残坡积土质滑坡稳定性及破坏模式分析[J].科学技术与工程,2021,21(22):9236-9242.
Li X M,Li T,Liu J H,et al.Stability and failure mode analysis of small traction residual slope soil landslide in eastern Jiangxi province[J].Science Technology and Engineering,2021,21(22):9236-9242.
[8] 李晓龙. 国道212线南充猫儿山段牵引式滑坡稳定性分析及加固措施研究[J].甘肃水利水电技术,2021,57(4):47-51.
Li X L.Stability analysis and reinforcement measures of traction type landslides in the Maoershan section of National Highway 212 in Nanchong[J].Gansu Water Resources and Hydropower Technology,2021,57(4):47-51.
[9] 苏冬九. 典型牵引式滑坡数值模拟及治理措施研究[J].西部交通科技,2023(3):31-33,119.
Su D J.Research on numerical simulation and treatment measures of typical traction landslides[J].Western Transportation Technology,2023(3):31-33,119.
[10] Marko K,Tiit H,Peeter T,et al.Analysis of a retrogressive landslide in glaciolacustrine varved clay[J].Engineering Geology,2010,116(1-2):109-116.
[11] 苏泽志. 贵州岩脚滑坡稳定性评价及应急防治措施研究[J].贵州大学学报:自然科学版,2017,34(5):120-125,140.
SU Z Z.Research on stability evaluation and emergency prevention measures of Yanjiao landslide in Guizhou[J].Journal of Guizhou University:Natural Science,2017,34(5):120-125,140.
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