Tunnel face extrusion deformation monitoring method

• Main Authors: LIANG WENGUANG, YUE AIMIN, ZHANG XINQUAN, DONG KAI, XU PENGFEI, JIANG YU, WANG KAILI, XIA BAOKUN, LIN XUEBING, HAN CHUNMEI, WANG XIAOCHAN, LI LIN, JIA BAOXING, ZHENG QING, ZHANG LILI, XU LIN, WANG YAJIE, WEI KUN, WANG HUAN, YANG FUCHUAN, CHEN SHENGTIAN, GAO SHENGLEI, LIU HUIFENG, KONG HENG, ZHANG BIN, LI XINPENG, WANG WEI, ZHANG PENG, ZHAO CHENYANG, WANG YUERUI, ZHANG ZHI'EN, HAO LIANG, ZHAO HONGRAN, LIN JINGXING, GUO FEI, CUI CHAO
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2019
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING DISTANCES, LEVELS OR BEARINGS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention discloses a tunnel face extrusion deformation monitoring method, which belongs to the technical field of tunnel engineering. In the monitoring method, a series of PVC measuring pipes with fluorescent measuring points are connected through a rubber sleeve outside the tunnel and enter leading core soil in front of the face; in different time periods, a three-dimensional laser scanner is used to acquire the three-dimensional coordinates of each measuring point in the PVC measuring pipes; and vertical displacement and horizontal displacement change values of each measuring point arecalculated and obtained as one of criteria for determining the stability of the face rock and soil mass. In comparison with a displacement meter with a wire, the monitoring method reduces the use of elements, reduces the cost and executes little influence on construction, and the monitored data can reflect settlement deformation and extrusion deformation of the soil in front of the face to the greatest extent and provide