The governance of uranium tailings aims to improve stability and reduce radionuclide release. In order achieve this goal, the removal solution test grouting were successively carried out using microbially induced calcium carbonate precipitation (MICP) technology. effect MICP on reinforcement synchronous control in discussed. results show that Sporosarcina pasteurii could grow reproduce rapidly ...

Traditional materials such as fly ash and lime are generally used to improve soils but can severely pollute the environment. Eco-friendly protocols, application of xanthan gum, therefore essential for soil treatment. In this study, a series microscopic tests, water retention characteristics shear tests were carried out on silt, which known have poor engineering properties, explore effect mechan...

Adding biochar to soil can improve the soil’s physical–chemical properties, microscopic pore structure, and bacterial habitat. This affects strength characteristics oxidization of methane. Using a Humboldt pneumatic direct shear instrument, this study investigated effect amount in soil, methane-oxidizing bacteria, aeration time, carbon content on biochar-amended clay. The results show that when...

This study investigated the temperature field distribution of a freezing inclined shaft. Thus, three-dimensional physical simulation test system was developed, and consists six parts, which are box shaft model, loading system, external environment data acquisition system. From results mechanical property artificially frozen sand, in range 25°C to -20°C, heat capacity sand decreases first, then ...

In this investigation, silica fume (SF) was used as an additive material to study its influence on the characteristics of expansive soil. The soil in research prepared a lab by mingling bentonite (50 percent dry weight) with natural According (USCS), classified (CH) liquid limit 67.5 and plastic 29.3%. Expansive mixed different percentages (SF), (8, 9, 10, 11, 12, 13%), experiments were conduct...

Soil moisture content changes caused by rainfall and other factors can significantly affect slope stability potentially lead to geological disasters, such as landslides debris flows. However, conventional finite element methods for strength reduction do not consider the impact of water on stability. This paper examines classical reducing double coefficient then introduces a novel approach using...

Slope engineering is a type of complex system that mostly involved in water conservancy and civil mining engineering. Moreover, the link between slope stability safety quite close. This study took stable state as prediction object used unit weight, cohesion, internal friction angle, pore pressure coefficient, height indices to analyze based on collection 117 data points. The genetic algorithm w...

Based on the finite element limit analysis method, stability of face in case active failure under three constitutive models, Mohr-Coulomb model (MC), modified Cambridge (MCC) and Drucker-Prager (DP), were analyzed. The ultimate support pressure influence factors such as different burial depth ratios ( C/D ), cohesion c ) friction angle φ MC are also discussed. results show that safety factor ob...

To study the mechanical effect of clay under acidic and basic conditions, typical minerals, montmorillonite illite, were taken as main research objects in this study. The variation law mechanism cohesive force internal friction angle studied by immersing remoulded soil HNO 3 solution with pH = NaOH (alkaline waste liquid) 13.5, respectively. It was found that, a corrosion reaction between miner...