论文部分内容阅读
中缅油气管道是我国能源进口西南通道。其云南区域横穿滇西横断山脉、滇中红层高原,在地质复杂、高降雨及管道作业带扰动等因素的影响下,造成管道铺设区域坡面滑塌、地表流失和地貌恢复困难,仅在龙陵至弥渡337 km区域在2015年就发生坡面滑塌13处、水毁漏管30处、在破碎砂砾岩近30 km区域地貌仍无法恢复。仅针对云南横断山脉区域山区管道坡面水毁从地层扰动、降水强度、地形地貌和建设期治理措施四方面进行分析,提出新型柔性疏导方案并列举了应用实例。经实际应用,该设计方案具合理可行,具有施工难度小、工期短、一次性投资少、施工安全系数高和环境协调性好的优点,适用于抢险工程和临时应急处置。
China-Myanmar oil and gas pipeline is China’s energy imports southwest channel. The Yunnan region traverses the Hengduan Mountains in western Yunnan and the red plateau in the middle Yunnan Plateau. Under the influence of complex geological conditions, high rainfall and disturbances in the pipework zone, the slope collapse, surface loss and topography recovery are difficult in the pipe laying area. In 337 km from Longling to Midu, there were 13 slope slips and 30 water damage pipes in 2015, and the landform can not be recovered in the area nearly 30 km away from crushed glutenite. According to the analysis of the disturbance of the stratum, the precipitation intensity, topography and geomorphology and the control measures during the construction period, aiming at the water damage of slope in the mountainous area of Hengduan Mountains in Yunnan Province, the paper proposes a new flexible grooming scheme and gives some examples. After practical application, the design scheme is reasonable and feasible, with the advantages of less difficulty in construction, shorter construction period, less one-time investment, high construction safety factor and good environment coordination, which is suitable for emergency engineering and temporary emergency treatment.