Composite foundations have been widely used and promoted in practical engineering applications. However, research on the joint-bearing mechanism of piles soil within composite is still not comprehensive enough. This paper proposes a method for calculating additional internal forces foundations. Based three-dimensional finite element analysis, this study investigates variation patterns stress, displacement, depth direction under action upper loads when using friction end-bearing piles. aims...

Conducting research on slope failure risk assessment is beneficial for the sustainable development of slopes. There will be various modes considering both randomness groundwater level and soil shear strength parameters. Based integrated probability (IFP), traditional analysis needs to count all modes, including (Pf) coefficient (C), one-by-one. A new method that uses sum element calculate overall proposed in this paper considers The determined by their location information situation; area....

Dangerous rock mass in the overhanging slope of Puerdu town has good free‐face condition, high position, and great potential energy, identification stability evaluation which is a difficult problem disaster prevention. In this paper, limit equilibrium method was used to evaluate dangerous slope. Firstly, geomorphic characteristics distribution are determined by field geological survey. Secondly, six masses may cause more threat studied, with defining their failure modes characteristic...

Nanhong agate has attracted public attention as the most distinctive gemstone in China. Owing to limited data on agates from a new production area northeastern Yunnan, this paper presents first gemological studies these agates. Complex investigations using Fourier-transform infrared (FTIR) spectrometry, ultraviolet–visible (UV–VIS) luminescence Raman spectroscopy, polarizing microscopy, scanning electron microscopy (SEM), microprobe (EPMA), and laser ablation–inductively coupled plasma mass...

In view of the current technical difficulties in detection unfavorable geological bodies karst areas, this paper starts with fine a borehole wall, near-field wall rock and far-field rock, deeply excavates correlation characteristics between multi-source data, proposes technology for development areas based on data. This is used to establish data depth mining model. The are clarified. heterogeneous proposed realize organic fusion different scales, effectively estimate extension range...

Abstract Rainfall is one of the main causes underground debris flow disasters in mining areas. Studying rainfall threshold required to induce sudden mines can provide a scientific basis for prevention and control such rainy season. This paper analyzes typical cases caused by Pulang area from 2020 2022. A total 249 events were selected, including 86 potential 5 major events. The logistic regression model used analyze triggering before event antecedent effective rainfall. evaluation results...

To study the corrosion behavior of cement soil in peat soil, experiment involves preparation by incorporating humic acid into cohesive with a lower organic matter content. Cement samples are then prepared adding to mixture. These subjected immersion fulvic solution and deionized water simulate different working environments soil. The considers time as variable factor. It conducts observations apparent phenomena, ion leaching tests, unconfined compression strength tests on results follows:...

Analysis of the movement trajectory and risk assessment high‐slope dangerous rock mass collapse are great significance for preventing controlling geological disasters collapse. This study firstly takes high slope in Pu’erdu Town, Yanjin County, Zhaotong City, Yunnan Province, as research object, calculates analyzes several groups with threat, RocFall used to carry out numerical simulation analysis verification. Secondly, vulnerability area analyzed, evaluation is carried through matrix...

The bearing capacity of a non-persistent jointed rock mass containing bridge is investigated by combining the lower bound limit analysis theory, mixed numerical discrete method, and linear mathematical programming. A method proposed to divide masses in which rigid block elements are used simulate blocks, whereas finite element intact bridges. programming model for ultimate constructed solved using interior point algorithm. formulation validated application three slopes.

This paper suggests a large-scale three-dimensional numerical simulation method to investigate the fluorine pollution near slag yard. The included an experimental investigation, laboratory studies of solute transport during absorption water by soil, and simulations transport. results showed that concentrations from smelting construction waste soil were well over discharge limit 0.1 kg/m3 recommended Chinese guidelines. key parameters materials used for determined based on studies, saturation...

In underground engineering, cement-soil reinforcement beneath a peat soil environment is significant challenge. To investigate the corrosiveness of fulvic acid on and its micro fine structure changes under (PSE), an experiment was conducted to prepare by mixing humic (HA) into alluvial clayey then adding cement make specimen, which soaked in (FA) solution deionized water simulate different working cement-soil. The carried out scanning electron microscopy (SEM) test, mercury intrusion...

In recent years, Pulang Copper Deposit has experienced multiple occurrences of debris flow, varying magnitudes, which have significantly impacted the safety mining operations. Debris flow become a major hazard natural caving in Deposit. To address issues formation due to collapse glacial Deposit, this paper proposes new composite curing agents for grouting and debris. The study investigates influence agents’ proportions on mechanical property, water stability, permeability solidified...

The characteristics of the karst pore structure not only affect seepage features rock mass in area but also have a noticeable effect on mechanical behavior process loading. exploration exhibition plays crucial role development science, technology, and engineering construction. In order to appropriately unlock problem image brightness imbalance caused by probe eccentricity field acquisition realize proper situ identification precise characterization borehole structure, scrutiny recognition...

The upper bound method analyzing the stability of non-persistent jointed rock slopes is proposed by considering bridge mechanical effects, which combines theorem, discretization technique rigid block element and nonlinear mathematical programming. kinematically admissible velocity fields are constructed. non-linear programming models established for solving rigorous solution ultimate load or safety coefficient using successive linear algorithm. two numerical examples performed analyzed....