debris flows will break out in Siergou and deposit on the circulation area, forming medium-high risk areas, which seriously threaten the safe operation of the infrastructure in the gully, such as the Lanzhou-Xining high-speed
The geologist is interested in information such as the origin, history and other more highly technical characteristics of a given rock mass. The architect and engineer, however, are usually interested only in those characteristics which will enable them to predict the performance of the in situ roc...
Shunping county of Hebei province is located at the eastern foot of the Taihang Mountains. There mainly are four kinds of geohazards, including rockfall, landslide, mud-rock flow, and earth fissures, which are widely distributed in different geomorphic units of this county. Based on the analysis...
In order to understand the effects of different patterns of prefabricated fractures and grain size compositions on the fracture characteristics, acoustic emission characteristics and mechanical properties of the rock masses. We conducted compression shea
The condition and gradient of the slope,the block shape and mass of the rock block are the major factors affecting the movement characteristics of rock-fall. Through the orthogonal test design( L 27( 34)),the sort of them is obtained: slope condition X 1,rock block shape X 2,slope gradi...
In a rock mass, holes of various sizes and geometries naturally occur, which in turn can affect the mechanical properties of the rock mass. These defects o
The stability of coal and rock masses in water-rich mines is affected by both mine water erosion and dynamic disturbances. Thus, it is necessary to study the dynamic mechanical response and failure characteristics of coal and rock under the combination o
The fracture behavior of coal-seam roof rock in coal mining is a key and controlling factor for the mode optimization of the artificial roof caving. Howeve... L Chen,S Lyu,ZXY Guo - 《Energy Exploration & Exploitation》 被引量: 0发表: 2023年 Effect of Loading Rate on Fracture Behaviour ...
rock geochemical characteristics of the early Middle Triassic dacite-rhyolite in the Gongjue area, and discusses its petrogenesis and magma source area.Based on LA-ICP-MS zircon U-Pb dating, the weighted average U-Pb age of four felsic volcanic rocks is 246.2±1.7 Ma, 245.5±0.7 Ma, 244.7...
The tuffs of Manketou'ebo Formation possess the characteristics of A2-type granites, indicating that they were formed in a post-orogenic extensional environment, which was possibly related to the lithosphere extension after the closure of the Mongol-Okhotsk Ocean. Keywords: volcanic rock / A-...