This paper mainly analyzes the stability of waste dump Zijinshan open-pit mine. ANSYS software was used to establish numerical model slope according geological report and real geographic conditions. The displacement, stress, plastic deformation in X Y directions under different number overburden layers strength reduction factor were obtained, so as obtain safety give operation measures.

Field and laboratory studies were conducted to estimate concentration of potential contaminants from landfill in the underlying groundwater, leachate, and surface water. Samples collected in the vicinity of the landfill were analyzed for physiochemical parameters, organic contaminants, and toxic heavy metals. Water quality results obtained were compared from published data and reports. The resu...

Driverless haulage trucks have recently been developed for open pit mines. To predict the benefits of an Autonomous Haulage System (AHS), a deterministic/stochastic model has been created to compare AHS to a manual system by estimating benchmarked Key Performance Indicators (KPIs) such as productivity, safety, breakdown frequencies, maintenance and labor costs, fuel consumption, tire wear, and ...

We investigated the impacts of leachates from a swine carcass burial site and a cow manure heap on the geochemical and microbiological properties of agricultural water samples, including leachate, groundwater from monitoring wells and background wells, and stream water. The leachate from the livestock burial site showed extremely high electrical conductivity, turbidity, and major ion concentrat...

X-ray crystal structures of binary complexes of dUMP or dCMP with the Lactobacillus caseiTS mutant N229D, a dCMP methylase, revealed that there is a steric clash between the 4-NH2 of dCMP and His 199, a residue which normally H-bonds to the 4-O of dUMP but is not essential for activity. As a result, the cytosine moiety of dCMP is displaced from the active site and the catalytic thiol is moved f...

In the surface mining of mineral deposits, land resources suitable for agricultural purposes are inappropriately spent in large volumes. When deep open pits, overburden rocks mainly transported to surface. The optimal solution reducing area disturbed lands is placement internal dumps pit. This especially when a deposit with several pits where at least one them depleted. Therefore, it important ...

The quantity of leachate is crucial when assessing pollution emanating from municipal landfills. In most cases, existing leachate quantification measures only take into account one source - precipitation, which resulted in serious underestimation in China due to its waste properties: high moisture contents. To overcome this problem, a new estimation method was established considering two source...