摘要
为达到国际能源组织要求的保有90d以上石油进口量储备的建议,我国需建立大量地下水封石油储备库,以确保能源安全。目前地下储油洞库的注浆与水幕系统的水封平衡性问题研究还是空白。以锦州地下国储项目为背景,从裂隙岩体宾汉流体流动规律出发,建立裂隙网络pipe管网模型,实现对浆液进行迭代计算从而求得注浆长度;基于注浆强度值概念,提出适用于需要考虑注浆与水封平衡性的地下储油洞库的改进注浆隧道(GIN)能量法,给出GIN包络线各项参数的计算方法;同时,通过裂隙网络中每一条裂隙注浆长度的立方和求出GIN;最后将锦州4个储油洞库根据地质条件分为不同的5个GIN强度值区域进行注浆,避免过高注入压力可能引起的裂隙劈裂和过量浆液的浪费,最后,6个试验点注浆注入孔基本吻合GIN包络线。
To meet the IEA's(International Energy Agency) proposed minimum 90d's petroleum reserve,a large number of water-sealing petroleum strategic reserves are required due to safety. However,there are few researches on balance analysis between grouting and water seal in underground petroleum storage caverns at present. A series of studies are carried out to analyse grouting balance based on Jinzhou state reserve projects in this paper. Computational algorithm of penetration length of grout in fracture network with pipe network model is developed. Here,grout is regarded as Bingham fluid. Then,grouting intensity number(GIN) method for underground petroleum storage is developed to achieve a balanced water-grout state. Parameters selection algorithm for GIN is also developed then. Next,five GIN numbers are selected for four storage caverns in Jinzhou with GIN curve computing method proposed in this study,which avoids fracture splitting and excessive grout loss. Finally,six grouting routes of tested points fit well with GIN envelope curve.
作者
林放
栾合冰
张恒
钟志彬
陈寿根
LIN Fang;LUAN Hebing;ZHANG Heng;ZHONG Zhibin;CHEN Shougen(National Engineering Laboratory for Green and Safe Construction Technology in Urban Rail Transit,Beijing Urban Construction Design and Development Group Co.,Ltd.,Beijing 100037,China;MOE Key Laboratory of Transportation Tunnel Engineering, Southwest Jiaotong University,Chengdu,Sichuan 610031,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu,Sichuan 610031,China)
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2018年第A02期4252-4261,共10页
Chinese Journal of Rock Mechanics and Engineering
基金
国家重点研发计划(2017YFB1201104)
国家自然科学基金资助项目(51508477)~~
关键词
地下工程
水封
地下储油库
注浆
pipe管网
underground engineering
water seal
underground petroleum storage caverns
grouting
pipe network
