摘要
研究目的:哈尔滨至齐齐哈尔客运专线穿过的大庆油田由于高强度注水采油和工业、生活超量开采地下水,致使在油田采区及地下水下降漏斗区产生了不同程度的地面隆起和沉降变形,不均匀地面变形会对高速行驶的列车安全产生一定程度的影响,因此,查明和研究地面变形发生的范围、速率、变形量及对客运专线的影响程度,为设计采取必要的措施提供依据是非常必要的。研究结论:(1)为准确了解大庆地区地面变形规律,应建立地面变形动态监测系统,监测第四系沉降变形和白垩系隆起变形特征。(2)多采用化学驱油方式,控制注水压力,尽量保持压力场的平衡,并对靠近线路的采油井和注水井进行适当迁改。(3)在动态监测的基础上,建立地下水开采、采油注水、地面变形的耦合模型,预测地面变形发生、发展趋势,为铁路工程提供准确的预报预警。通过分析得出随着采油工艺的改进、地下水减采和动态监测系统的建立,大庆地区地面变形会得到有效控制和缓解,不会对哈齐客运专线工程造成较大影响。
Research purposes： The Harbin - Qiqihaer Passenger Dedicated Line passes through the Daqing oilfield in where the ground rises or settles in the oil extraction area and the underground water dropping area because of the high - pressure waterflooding for oil extraction and the over exploitation of groundwater for production and living. The uneven ground deformation maybe influences the safety of high - speed railway. Thus, it is necessary to find out and study the range, speed and deformation volume of the ground deformation and their influence on the passenger dedicated line for providing the reference to the railway design. Research conclusions： （ 1 ） For accurately knowing the regulation of the ground deformation of the Daqing area, the dynamic monitoring system for the ground deformation should be established to monitor the characteristics of the settlement and deformation of the quaternary system and the uplift deformation of the cretaceous system. （2） The mode of displacement of oil by chemistry should be used, the pressure of water - filling should be controlled, the pressure field should be balanced as much as possible, and the oil well and water -filling well near the railway should be removed or modified. （3） Based on the dynamic monitoring system, the coupling model for the groundwater exploitation, oil extraction, water filling and ground deformation should be established to forecast the occurrence and development trend of the ground deformation for providing the forecasting and warning to the railway engineering accurately. From the analysis it is concluded that with the improvement of the oil extraction technology, the reduction of underground waterextraction and the establishment of the dynamic monitoring system, the ground deformation will be effectively controlled and relieved and the ground deformation will not produce the large influence on construction of the Harbin- Qiqihaer Passenger Dedicated Line.
出处
《铁道工程学报》
EI
北大核心
2013年第1期9-14,共6页
Journal of Railway Engineering Society
关键词
大庆油田
地面变形
哈齐客专
影响
Daqing Oilfield
ground deformation
Harbin - Qiqihaer Passenger Dedicated Line
influence
