引松供水工程总干线地应力测试研究

发布时间：2018-03-14 22:07

本文选题：地应力　切入点：测试　出处：《水力发电》2017年10期 　论文类型：期刊论文

【摘要】：引松供水工程是吉林省规模最大的水利供水工程,输水总干线隧洞段总长约98 km,是国内最长的有压引水隧洞之一,隧洞跨越不同岩性,地层较多,地质条件复杂。采用水压致裂法对现场地应力测试,研究隧洞地应力场特征,得到最大、最小水平主应力量值和水平主应力方向。结果表明,测试区域内地应力属中低应力水平,从地应力角度分析,隧洞轴线选择方向对围岩稳定较为有利。
[Abstract]:The diversion water supply project is the largest water conservancy water supply project in Jilin Province. The total length of the tunnel section of the main main line of water conveyance is about 98 km, which is one of the longest pressure diversion tunnels in China. The tunnel spans different lithology and has more strata. The geological conditions are complicated. The field stress field characteristics of the tunnel are studied by hydraulic fracturing method, and the maximum and minimum horizontal principal stress values and horizontal principal stress directions are obtained. The in-situ stress in the test area is of medium and low stress level. From the point of view of in-situ stress, the selection direction of tunnel axis is more favorable to the stability of surrounding rock.
【作者单位】：长春工程学院机电工程学院;吉林省水利水电勘测设计研究院;
【基金】：国家自然科学基金项目(51378075,51678065) 吉林省科学技术厅重点科技攻关项目(20160204020SF)
【分类号】：TV221;TV674

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