Institute of Geology and Geophysics, Cas

Yunnan Dianzhong Water Diversion Engineering Co.

Yanlong Kong

Shengwen Qi

Bowen Zheng

Songfeng Guo

Yongchao Li

Xiaokun Hou

Tianming Huang

Lina Ma

Zan Wang

Wei Lu

Yu Zou

Wang Zhang

Bo Wan

Weiwei Zhu

Jianing Cong

Guoliang Li

Guangming Luo

Ning Liang

Chao Jin

Wenjie Hao

Yuran Zhang

Xin Wang

Tao Wang

Jing Min Xu

Yan Zhang

Haijun Zhao

Lei Fu

Rixiang Zhu

Zhendong Cui

Shuaihua Song

Xin Yu

Pingchuan Dong

Shufang Li

A method and system for monitoring structural deterioration of a reservoir rock mass under a long-time high-temperature condition, and a product are provided. The method includes: arranging ultrasonic transducers and fiber optic extrinsic Fabry-Perot interferometric (EFPI) sensors in a loading briquette; loading ultrasonic waves on a rock mass sample with the ultrasonic transducers; monitoring ultrasonic and acoustic emission signals at the rock mass sample with the fiber optic EFPI sensors; inverting a velocity model indicating a change of a wave velocity inside the rock mass sample over time by fast marching acoustic emission tomography using standard optimization (FaATSO) according to the ultrasonic and acoustic emission signals; and conducting joint inversion by a fast-marching method according to the velocity model, the acoustic emission signals, and observation data to determine a position of rock mass fracturing in the rock mass sample.

Method and system for monitoring structural deterioration of reservoir rock mass under long-time high-temperature condition, and product

A real-time quantitative characterization method, equipment and a medium for rock mass evolution are disclosed. The method includes: the multiphase field detection and monitoring data is fused; a deep learning model driven by physical principles is established based on the physical principles of fluid density; the deep learning model is trained using real-time fused data as input and corresponding evolution distribution images as output; a trained deep learning model is used to obtain an evolution distribution image based on multi-phase field detection and monitoring data of different time periods and types; a mathematical model is used to quantitatively characterize of physical and mechanical parameters in the whole process of progressive failure of the dynamic evolution of the rock mass based on the macroscopic mechanical parameters and evolution distribution images synchronized with multiphase field detection and monitoring data.

Real-time quantitative characterization method, equipment and medium for rock mass evolution

A sample mounting device for direct tensile test of rock mass is provided, which includes a first positioning stage, a second positioning stage, a first support piece, a second support piece, and a screw drive mechanism. The second positioning stage is arranged above the first positioning stage and capable of moving up and down, and cushion blocks for gluing with the rock mass are coaxially and detachably arranged at opposite ends of the first positioning stage and the second positioning stage, and a rock mass mounting area is formed between the two cushion blocks. A screw of the screw drive mechanism includes a first thread segment and a second thread segment with opposite thread directions. The first support piece is connected with the first thread segment through a nut seat, and the second support piece is connected with the second thread segment through a nut seat.

Sample mounting device for a direct tensile test of rock mass

The present disclosure provides a multi-scale three-dimensional (3D) engineering geological model construction system and method. A regional geological model of a target region, a site geological model of each engineering site, and a drilling geological model of each drilling well are constructed. The geological model of each drilling well is superimposed to the site geological model of the corresponding engineering site in the way of step-by-step superimposition, and the site geological model of each engineering site fused with the drilling geological model is superimposed to the regional geological model of the target region. Thus, multi-scale geological model fusion of drilling well, engineering site, and regional mountain is realized. The final multi-scale 3D engineering geological fusion model can provide multi-scale refined geological information for geological suitability evaluation of major geological engineering, so as to ensure accuracy of geological suitability evaluation and site selection of major geological engineering.

Multi-scale three-dimensional (3D) engineering geological model construction system and method

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Beijing, China

Yanlong Kong