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申请号:202010217338.8 公开号:CN111271122A 主分类号:E21F17/00
摘要:【中文】本发明涉及一种衬砌外水压力的监测方法,该方法包括以下步骤:1)根据运营隧道渗漏水情况以及施工期的地下水分布情况,确定水压力监测区域和断面;2)确定水压力监测点的位置,并且确定测点布设位置以及光纤光栅渗压计装置的尺寸;3)采用钻孔装置在测点布设位置处钻孔,根据衬砌厚度与钻杆尺寸,控制钻头没入到衬砌外部的岩土体中;4)安装光纤光栅渗压计装置,并将渗压计光纤引线与采集仪连接,当采集到的外水压力值稳定后,记录外水压力值,完成衬砌外水压力的监测。与现有技术相比,本发明具有监测点布设合理、对结构受力承载影响小、不需预埋仪器、三重密封不会影响结构防水性能、监测精度高等优点。 【EN】The invention relates to a method for monitoring the external water pressure of a lining, which comprises the following steps: 1) determining a water pressure monitoring area and a section according to the water leakage condition of the operation tunnel and the underground water distribution condition in the construction period; 2) determining the position of a water pressure monitoring point, and determining the arrangement position of a measuring point and the size of a fiber bragg grating osmometer device; 3) drilling holes at the measuring point arrangement positions by adopting a drilling device, and controlling a drill bit to sink into a rock-soil body outside the lining according to the thickness of the lining and the size of a drill rod; 4) and installing a fiber grating osmometer device, connecting an osmometer optical fiber lead with an acquisition instrument, and recording an external water pressure value after the acquired external water pressure value is stable to complete monitoring of the external water pressure of the lining. Compared with the prior art, the invention has the advantages of reasonable arrangement of monitoring points, small influence on the stress bearing of the structure, no need of pre-embedding of instruments, no influence on the waterproof performance of the structure due to triple sealing, high monitoring precision and the like.
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申请号:201911187505.2 公开号:CN110967344A 主分类号:G01N21/88
摘要:【中文】本发明涉及一种基于红外探测的隧道衬砌浅层剥落剥离判定方法与装置,所述方法包括以下步骤:对隧道衬砌表面进行热激励,同时采集隧道的红外热图像和可见光数字图像,并记录相应位置信息;对所述红外热图像进行预处理,从预处理后的红外热图像中提取关键几何特征信息,基于所述关键几何特征信息识别衬砌是否存在内部空隙;在存在内部空隙时,基于位置信息获取存在内部空隙处的可见光数字图像,基于所述可见光数字图像获取表面裂缝几何特征;比较所述内部空隙与表面裂缝的几何关系,判断隧道衬砌浅层的剥落剥离程度,反馈相应预警信息。与现有技术相比,本发明具有识别精度高、及时预警等优点。 【EN】The invention relates to a tunnel lining shallow layer peeling judgment method and device based on infrared detection, wherein the method comprises the following steps: thermally exciting the surface of the tunnel lining, simultaneously acquiring an infrared thermal image and a visible light digital image of the tunnel, and recording corresponding position information; preprocessing the infrared thermal image, extracting key geometric characteristic information from the preprocessed infrared thermal image, and identifying whether the lining has an internal gap or not based on the key geometric characteristic information; when an internal gap exists, acquiring a visible light digital image of the position where the internal gap exists based on the position information, and acquiring the geometric characteristics of the surface crack based on the visible light digital image; and comparing the geometrical relationship between the internal gap and the surface crack, judging the peeling degree of the shallow layer of the tunnel lining, and feeding back corresponding early warning information. Compared with the prior art, the method has the advantages of high identification precision, timely early warning and the like.
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申请号:201911287249.4 公开号:CN111140250A 主分类号:E21D11/00
摘要:【中文】本发明涉及一种盾构隧道结构粘钢补强加固时机确定方法及应用,所述时机确定方法包括以下步骤:1)基于荷载结构法进行室内模型试验,获得在不同变形模式下,盾构隧道结构水平扩张值与荷载的关系曲线,记为第一关系曲线;2)进行粘钢补强结构破坏试验,获得加固结构的承载性能以及加固结构水平扩张值与荷载的关系曲线,记为第二关系曲线;3)基于所述第二关系曲线拟合获得加固点水平扩张值与结构极限承载力以及加固点水平扩张值与结构刚度的曲线公式;4)获取现场盾构隧道结构的变形模式与变形条件,基于所述曲线公式及所述第一关系曲线确定粘钢加固时机。与现有技术相比,本发明具有节约能源、有效提高盾构隧道使用寿命等优点。 【EN】The invention relates to a method for determining the occasion for reinforcing and reinforcing bonded steel of a shield tunnel structure and application thereof, wherein the occasion determining method comprises the following steps: 1) carrying out an indoor model test based on a load structure method to obtain a relation curve between a shield tunnel structure horizontal expansion value and a load under different deformation modes, and recording the relation curve as a first relation curve; 2) carrying out a bonded steel reinforcing structure failure test to obtain the bearing performance of the reinforcing structure and a relationship curve of the horizontal expansion value and the load of the reinforcing structure, and recording as a second relationship curve; 3) obtaining a curve formula of a horizontal expansion value of the reinforcing point and the ultimate bearing capacity of the structure and a curve formula of the horizontal expansion value of the reinforcing point and the structural rigidity based on the second relation curve fitting; 4) and acquiring a deformation mode and deformation conditions of the field shield tunnel structure, and determining the steel sticking and reinforcing time based on the curve formula and the first relation curve. Compared with the prior art, the invention has the advantages of saving energy, effectively prolonging the service life of the shield tunnel and the like.
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