This research used orthogonal testing methods to study the effect of stimulator content on the properties of carbide slag (CS) cementitious materials. Range and variance analyses reveal that different stimulators do not significantly affect the consistencies and setting times of these cementitious materials,...

Taking Plain Concrete column and Reinforced Concrete column for research objects, the uniaxial compression experiments were carried out to fix baking time, change temperature and fix temperature, change baking time. Numerical simulation was performed using FLAC3D software and all experimental data were...

Fractal dimension is widely used in the quantitative description of nonlinear systems and irregular properties. It is of great significance on the mechanism of rock mechanics. This can provide guidance for the management of goafs in rock mines. In this paper, firstly, multiple sets of rock fracture surface...

From the point of view of sustainable development, the durability of mine cemented paste backfill(CPB) structure has become more and more important. This paper mainly introduces the research status of the durability of CPB from the aspects of impermeability, heat resistance and chemical corrosion resistance....

In order to reduce the filling cost and improve the coefficient of utilization of fly ash in coal mine filling paste, the influence of desulfurization gypsum and quicklime on the setting time and uniaxial compressive strength (UCS) of filling paste with large quantity of fly ash were studied using the...

Rock mechanics servo testing machine was used to test the uniaxial compression of granites with different degrees of damage. Based on the experimental results of stress-strain curves, the influence of different damage degrees on the mechanical properties of granite was analyzed. The results show that...

The meso-structure characteristics of rock affect the macroscopic mechanical behaviors such as its fracture form. In this paper, through the uniaxial compression test and electron microscope scanning(SEM) test of two typical rocks of sandstone and limestone, the fractal characteristics of meso-structure...

In order to simulate gas drainage in low-permeability fissured coal considering double pores arranged symmetrically or asymmetrically, a dynamic model which can use a large pressure gradient is constructed based on Lattice Boltzmann Method (LBM). Different two pores drainage messures are studied respectively,...

Getting the changing law of dust concentration in fully mechanized coal caving face and taking specific measures can ensure the safety and health of workers. The dust migration rule of coal releasing process under different conditions was simulated by the software of FLUENT. The simulated result matches...

In long-term slow ground deformation monitoring, conventional InSAR technology is affected by factors of temporal decoherence, spatial decoherence and atmospheric effects. In order to overcome these limitations, this paper uses two InSAR time series analysis of permanent scatters and small baseline subset...

The large-scale exploitation and utilization of mineral resources not only brings great economic benefits to mankind, but also produce a series of geological disasters and environmental damages. Traditional monitoring methods require a large number of samples to be collected in the field and take a long...

Kuznetsk coal basin is one of the largest and most promising basins of the Russian Federation. Deposits of Kuzbass coal are complex ore-coal deposits, containing industrial concentrations of goal, platinum, rare metals in coals, waste coal and bottom ash waste, the extraction of which creates products...

The results of researches of mass transfer in a coal array and its conditions are described in the article. The influence of various physical processes on mass transfer is considered. An essential factor determining the direction of mass transfer in the coal array is the distribution of capillaries by...

The conditions of natural gas hydrates formation were studied experimentally. The composition of natural gas was determined chromatographically. The equilibrium points of the natural gas hydrate on the P-T diagram are determined. It was found that the point of natural gas hydrate formation is always...

Approaches to the assessment of mining risk, which is the risk of subsequent disconfirmation of the quantity and conditions of the coal reserves existence, are given and summarized in the paper. It is shown that the methods of its assessment are developing in the way of quantitative methods application....

The paper shows the possibility of processing of lignites of Kuzbass (Tisulskoye coalfield) into effective carbon sorbents. The sorbents are obtained at the different ratio of KOH/coal – 0.25g/g; 0.5g/g; 1g/g; 2g/g. The correlation of the porous structure and sorption activity of carbon sorbents with...

Formation of leaks and “fistulas” in concrete lining of underground structures is associated with the local density of concrete, which is characterized by its water resistance. Capes and intermittent streams of groundwater negatively changes the resistance of individual sections of the concrete lining...

A significant environmental problem for the coal regions of Russia is the presence of large volumes of fine-dispersed coal sludges formed during the operation of coal mines and coal-preparation plants. In addition to direct environmental damage, storage of these sludges in sedimentation tanks, hydro-dumps...

Results of development of technologies for purification of coal-fired power plants from nitrogen and sulfur oxides in the frame of Russian-Chinese Project No. 14.583.21.0004 are presented.

The automobile transport as one of significant sources of the increased danger to environment and employees of coal mines is considered in this article. The data of volumes of emissions from the automobile transport of the coal industry in the form of gaseous and solid pollutants into the atmosphere...

In a number of previously published papers by D. Sirota and V. Ivanov, it is theoretically and experimentally shown that the electrical measurements on the earth's surface can determine the approximate size and depth of the hearth of a man-made earthquake and a rock bursts in coal seams at depths of...

Mines have an impact on all components of the environment during and after coal mining. Process of restructuring coal industry and elimination of unprofitable mines changes anthropogenic impact on the environment. Structural and technological change in the geological massif is terminated, but other types...

The study considers sixteen functions of the first degree that were used for the analytical presentation of the aggregate size characteristics by "plus" of the Kuznetsk basin coal in the size range from 0 to 300 mm. The computational experiment was carried out for 500 aggregate coal size characteristics....

Herein there are the results of a tool and visual assessment of condition of excavations, border massif of rocks and anchor support elements influenced by flooding and further drainage, seismic and shock waves dynamic loading and high temperature short-pulse. The extent and term of the mine being under...