US 12,265,198 B2
In-situ rock mass elastic modulus measurement system and method
Quan Jiang, Wuhan (CN); Pengfei Chen, Wuhan (CN); Xiating Feng, Wuhan (CN); Jianpo Liu, Wuhan (CN); Herui Zhao, Wuhan (CN); Xin Wang, Wuhan (CN); and Jie Xin, Wuhan (CN)
Assigned to INSTITUTE OF ROCK AND SOIL MECHANICS, CAS, Wuhan (CN)
Filed by INSTITUTE OF ROCK AND SOIL MECHANICS, CAS, Wuhan (CN)
Filed on Oct. 24, 2022, as Appl. No. 18/049,067.
Claims priority of application No. 202210799647.X (CN), filed on Jul. 6, 2022.
Prior Publication US 2024/0012173 A1, Jan. 11, 2024
Int. Cl. G01V 9/00 (2006.01); E21B 49/00 (2006.01); G01N 3/12 (2006.01)
CPC G01V 9/00 (2013.01) [E21B 49/006 (2013.01); G01N 3/12 (2013.01); G01N 2203/0075 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An in-situ rock mass elastic modulus measurement system, comprising a controller, a telescopic rod, and a protective barrel, wherein a lower end of the telescopic rod is fixedly connected to an upper end of the protective barrel; in-hole supporting structures are arranged at upper and lower ends in the protective barrel; the in-hole supporting structures are outwards opened through first through holes on the protective barrel and supported on a borehole wall; the protective barrel is internally fixedly connected with a base; the base is slidably connected with a feeding sliding plate along a vertical direction; the feeding sliding plate is driven to slide up and down by a feeding cylinder on the base; the feeding sliding plate is provided with a right-angle transmission diverter, a driving motor, and a grinding cylinder; an input shaft of the right-angle transmission diverter is in transmission connection with an output shaft of the driving motor; an output shaft of the right-angle transmission diverter is disposed along a horizontal direction, and two ends of the right-angle transmission diverter are connected with two grinding pressure heads respectively; the right-angle transmission diverter is driven by the grinding cylinder to translate horizontally, and drives the grinding pressure heads to outwards grind the borehole wall through second through holes on the protective barrel; a hydraulic oil cylinder is fixedly arranged on the feeding sliding plate; two ends of the hydraulic oil cylinder are provided with two hydraulic rods respectively; the two hydraulic rods are telescopically disposed along a horizontal direction; two measurement pressure heads are arranged at top ends of the two hydraulic rods; a displacement sensor configured for detecting a relative displacement between the two measurement pressure heads is arranged on a cylinder body of the hydraulic oil cylinder; the measurement pressure heads press a planished surface of the borehole wall through the second through holes; the driving motor and the displacement sensor are electrically connected to the controller; and the in-hole supporting structures, the feeding cylinder, the grinding cylinder, and the hydraulic oil cylinder are all controlled by the controller.