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Materias / palabras clave: Geography. Anthropology. Recreation; Science: Geology; Science: Mathematics: Instruments and machines: Electronic computers. Computer science

Materias / palabras clave: Science: Mathematics; Science: Physics; Science: Chemistry; Science: Geology; Science: Biology (General); Science: Science (General)

ObjectiveTo improve the rock-breaking efficiency and durability of drill bits in the theoretical research on the optimal design of drill bits, the key is to systematically reveal both the rock-breaking mechanisms of poly...

Abstract The growing importance of machine learning in geological data computing, as well as in the broader geoscience and energy sectors, makes it essential to evaluate the impact of data augmentation on model performan...

In the DEM simulation of mechanical response of methane hydrate or weathered rock, the real shape and size of inter-particle bond significantly affect the macro-mechanical properties of the materials, therefore it is nec...

In recent years, granular soil is widely used in more and more earth-rockfill dams and high-filled projects being built. However, particle crushing of granular soil can not be ignored as the particle crushing of granular...

The laminar shear box is the most commonly used soil container in shaking table tests for soil-structure dynamic interaction. On the basis of the development experience of the worldwide shear boxes, the two-dimensional l...

The new airport project in Sanya planned by government of Hainan Province of China, is located at Hongtangwan of Sanya City, that is, to build an offshore airport with an area of a 28 square kilometers. The construction ...

Changsha International Finance Center, the highest building under construction in Central China, is 452 meters high with structure of 93 ground layers and 5 underground layers and an embedded foundation depth of 42 meter...

3D printing is used to produce different permeability structural surfaces, and rock-like samples are poured by moulds. The tests on permeability of rock-like samples with consecutive and filling fractures are carried out...

Due to their small thickness, high flexibility and tiny sensing element, the tactile pressure sensors can be used to measure the soil stresses and contact forces between soil particles. Hence, the tactile pressure sensor...

Based on the experimental results and previous studies, the stress ratio at the failure (Mf) under different confining pressures is modified, and the pressure dependency of plastic modulus is discussed. Considering the i...

The in-situ measurement formula for rock permeability is derived based on the theory of steady gas seepage. A rough judgement method for Darcy seepage in engineering is given based on the Pavlovsky’s Reynolds number fo...

Through numerical simulation based on the particle flow method, DEM numerical test samples are generated in accordance with the results of laboratory tests on standard sand. Using gravity deposition modelling of irregula...

Objective and MethodTo achieve rapid coalbed methane (CBM) extraction from broken-soft coal seams using surface horizontal wells, this study proposed a volume fracturing technology for coal seam roof using horizontal wel...

The triaxial permeability tests on cement-gravel soil are conducted using the improved triaxial test apparatus. Various factors including cement mixing ratio, gravel content, degree of compaction and seepage pressure tha...

Understanding the strain-damage-energy dissipation mechanisms and evolution characteristics of deep coal and rock under impact loading is of great significance for the prevention and control of rockbursts. In this study,...

The earthen final covers based on the water storage and release principle have a promising application in the landfills in arid and semi-arid areas. Most of the previous studies concentrate on the rainwater infiltration ...

In order to observe the effected strip of geogrid-reinforcement, a series of geogrid pull-out tests are conducted in a test box which has one Plexiglas wall, applied 4 different vertical pressures on each specimen prepar...

A pseudo-three-dimensional analysis method on static p-y curves of laterally loaded piles in soft clay is conducted. This method is based on the two-dimensional elastic fictitious loading upper bound limit analysis appro...

ObjectiveRescue drilling rigs undergo intense vibration at borehole mouths when operating in a confined underground space of coal mines. To address this issue, this study designed a compact multi-directional, passive dyn...

The consolidation coefficient in the Terzaghi theory is constant. It will cause significant errors if it is directly applied in the calculation of large strain consolidation of deposited sediment. Meanwhile, it is still ...

Materias / palabras clave: Term (time); sort; Mathematics; Disturbance (geology); Frontier; Production (economics); Function (biology); Estimation; Econometrics; Applied mathematics; Likelihood function; Random variable

The settlement of soils under load is caused by a phenomenon called consolidation, whose mechanism is known to be in many cases identical with the process of squeezing water out of an elastic porous medium. The mathemati...