Chinese Academy of Sciences

Research Institute of Highway Ministry of Transport

Institute of Geology and Geophysics, Cas

Inst. of Geol. & Geophys., Cn Acad. of Sciences

Lihui Li

Shengwen Qi

Bowen Zheng

Beixiu Huang

Yu Zou

Hui Zhou

Xiao Dong Li

Manchao He

Songfeng Guo

Guangming Luo

Panpan Zhang

Zhiqing Li

Xueliang Wang

Bo Tian

Zhongming Du

Zhe He

Fengjiao Tang

Jinde Xie

Jinxuan Li

Weiluan Wen

Sili Li

Lei Quan

Mengmeng Ban

Mengjie Zhang

Provided are a mesomechanics testing system and method integrating heating and observation, relating to the field of rock mechanics testing. The system includes a control and collection module, a loading module, a vacuum module, and an observation module. The loading module and the observation module are both connected to the control and collection module; the loading module is configured to apply a load required by mechanics testing to a mesoscopic sample to be tested, and transmit mechanics testing data to the control and collection module; the vacuum module is configured to provide the mesoscopic sample with a vacuum space for real-time heating and mechanics testing; and the observation module is configured to collect image data of the mesoscopic sample during the mechanics testing, and transmit the image data to the control and collection module.

Mesomechanics testing system and method integrating heating and observation

Disclosed is a mapping method of landslide threat range based on equivalent friction coefficient and trend analysis, which includes the following steps: obtaining physical parameters of a landslide, and obtaining a volume of the landslide according to an area in the physical parameters; selecting relevant parameters based on a rock type in the physical parameters, and obtaining the equivalent friction coefficient according to the relevant parameters and the volume; obtaining a landslide runout distance according to the equivalent friction coefficient, determining coordinate points of a hyperbola and a front edge boundary range according to the landslide runout distance, and performing a hyperbolic fitting on two side boundaries of the landslide according to the coordinate points to obtain a side boundary range; generating the landslide threat range based on the front edge boundary range and the side boundary range.

Mapping method of landslide threat range based on equivalent friction coefficient and trend analysis

A method for rapid demolishing of a cement concrete pavement slab and a device there for. The device includes a demolishing vehicle, and the demolishing vehicle includes a base disposed at a bottom of the demolishing vehicle. The first shallow cutting allows first saws to make a minimal cut into the cement concrete pavement, increasing the cutting speed. A second deeper cutting is made on the basis of the grooves cut by the first saws, and although second saws have a larger feed, a cutting thickness of the cement concrete pavement is reduced by the first saws. A third cutting follows the same principle as the previous cuttings.

Method for rapid demolishing of cement concrete pavement slab and device thereof

The present disclosure provides a method and system for acquiring an elastic modulus of a rock containing sedimentary rhythms, including: acquiring a rock sample containing sedimentary rhythms; measuring contents of rock elements in the rock sample at test points with an X-ray fluorescence (XRF) spectrometer, the test points being provided on different rhythms of the rock sample; determining a lithology of the rock sample according to the contents of the rock elements; determining an element-mineral relation equation according to the lithology; determining mineral components of the rock sample with the lithology and the element-mineral relation equation; determining a modulus coefficient of each of minerals according to the mineral components; and determining an elastic modulus of the rock sample according to the mineral components and the modulus coefficient of each of the minerals. The present disclosure can implement nondestructive testing on mechanical properties of rock samples.

Method and system for acquiring elastic modulus of rock containing sedimentary rhythms

An adjustable device for railway to cross active faults is provided to fix a rail and a sleeper, including: a fastener mounting base, disposed between the rail and sleeper; clamping pipes, disposed between the fastener mounting base and the sleeper, the sleeper is provided with a through groove, and the clamping pipes are detachably fixed inside the through groove; control parts, disposed on an inner wall of the clamping pipes, each of the control parts is configured to detect lateral pressures between the fastener mounting base and corresponding one of the clamping pipes, thereby to separate the corresponding one of the clamping pipes from the through groove, the device ensures that the rail will not produce bending deformations after the lateral dislocation of the bottom layer during earthquake events, and ensure that a train or rail repair vehicle can pass at a low speed after earthquake.

Adjustable device for railway to cross active faults

Growing community of inventors

Beijing, China

Lihui Li