新型双管水压致裂法地应力测试装置及其应用  

New Type of Double Pipe Hydraulic Fracturing Method In-Situ Stress Testing Device and Its Application

作　　者：常方强[1] 梁潇洋 黄梓焰 梁康康 全露龙 曹亚南 常方伟 CHANG Fangqiang;LIANG Xiaoyang;HUANG Ziyan;LIANG Kangkang;QUAN Lulong;CAO Yanan;CHANG Fangwei(School of Civil Engineering,Huaqiao University,Xiamen 361021,China;Deep Geotechnical Engineering Survey(Shandong)Limited Company,Weifang 261071,China)

机构地区：[1]华侨大学土木工程学院,福建厦门361021 [2]深部岩土工程勘察(山东)有限公司,山东潍坊261071

出　　处：《华侨大学学报（自然科学版）》2024年第6期706-711,共6页Journal of Huaqiao University(Natural Science)

摘　　要：提出一种新型双管水压致裂法地应力测试装置,管路采用C型接头的高压双层钢丝胶管。在浙江省和福建省的16条隧道中进行测试应用,取得了较好的效果。结果表明:新型双管水压致裂法地应力测试装置密封效果良好,能够分别控制封隔段和压裂段进行加压、泄压;在我国东南沿海地区,深部岩体中的天然应力场具有明显的方向性,最大水平主应力与最小水平主应力比值为0.55~0.85,侧压系数为0.72~4.83,平均值为2.16。A new type of double pipe hydraulic fracturing in-situ stress testing device is proposed,using high-pressure double-layer steel wire rubber hoses with C-type joints in the pipeline.The new device are tested and applied in 16 tunnels in Zhejiang Province and Fujian Province,obtaining good results.The results show that the new double pipe hydraulic fracturing in-situ stress testing device has good sealing effect,and can control the pressure and relief of the sealing section and fracturing section separately.In the southeastern coastal areas of China,the natural stress field in deep rock masses has obvious directionality,with 0.55-0.85 ratio of maximum horizontal principal stress to minimum horizontal principal stress,the lateral pressure coefficient is 0.72-4.83,the average value is 2.16.

关 键 词：地应力 水压致裂法 双管 岩石力学 

分 类 号：TU45[建筑科学—岩土工程]