Most papers are machine-translated to English; some are originally in English.
Showing 50 of 73 papers in Engineering And Technical Sciences
Tunnel damage cases in strong earthquake events such as the 2022 Menyuan earthquake have conclusively confirmed that sections of tunnels crossing active fault zones suffer severe seismic damage due to the combined influence of fault displacement from active faults and strong seismic forces. Correctl…
This study establishes a fully coupled thermo-hydro-mechanical (THM) finite element model based on non-equilibrium thermodynamics theory. The model innovatively introduces bound water temperature and particle temperature parameters to characterize microscopic thermal effects, thereby systematically …
Energy piles serve both load-bearing and heat exchange functions, holding significant value in ground-source heat pump applications. However, under layered foundation conditions, the heat transfer mechanism of pile-soil heat exchange is rather complex. Existing analysis methods are mostly based on c…
Bound water in saturated clay, owing to its unique electrical double-layer structure, plays a pivotal role in governing the macroscopic thermo-mechanical behavior of clay. This paper centers on discussing the mechanism of bound water variation with temperature in saturated clay. Through comparative …
This study focuses on the application of ground-source heat pump systems in subway stations, specifically addressing the thermo-mechanical coupling response and heat transfer mechanism of energy slabs. Currently, the thermal performance and structural safety of such structures under real operating c…
The mountainous areas of Southwest China are characterized by steep terrain, deeply incised valleys, and complex geological structures. Debris flows, as the primary type of geological hazard in this region, severely restrict regional economic development due to their typical characteristics of beyon…
To address the problems of low work efficiency, high safety risk, and survey blind spots in the investigation of high-steep dangerous rock masses, this study takes the No. 1 high-elevation dangerous rock mass at a hydropower project as an example and establishes an investigation system for such rock…
Gas storage facilities are critical components of compressed air energy storage (CAES) power stations, and lined rock cavern gas storage facilities have attracted widespread industry attention due to their flexible siting and scalable capacity. Accurately determining the magnitude of internal pressu…
Landslide disasters constitute one of the primary natural disasters in human history. Understanding calculation methods for landslide residual sliding force enables the targeted design of landslide treatment schemes. Given the current scarcity of research and engineering practice on wedge-shaped lan…
In karst regions, leakage issues have consistently been pivotal to the success or failure of dam and reservoir construction projects. The spatial complexity and dynamic evolutionary nature of karst development determine the intricacy of karst leakage problems. This paper analyzes the leakage charact…
To investigate the effects of freeze-thaw cycles and immersion on the physicochemical properties, deformation characteristics, and state of dispersive clay, laboratory physical, chemical, and compression tests were conducted on dispersive clay, and a compression deformation formula for dispersive cl…
Disintegration and fragmentation effects are ubiquitous in the motion of high-elevation rockslides, capable of altering both the material state and kinematic state of the landslide mass, thereby influencing its energy distribution and dynamic transmission characteristics. To investigate the disinteg…
Fault slip behavior is fundamental to understanding earthquake nucleation and rupture mechanisms. In nature, faults predominantly occur as gouge-bearing structures due to friction and wear from fault activity, with their frictional properties governed by mineral composition and temperature condition…
To investigate the distribution characteristics and evolution patterns of plastic zones in stratified surrounding rock, the boundaries of rock mass plastic zones considering rock mass anisotropy in both hydrostatic and non-hydrostatic pressure fields were derived based on the modified Hoek-Brown cri…
Coal and gas outburst constitutes a major safety hazard in China's mine production, posing severe threats to underground personnel and constraining mining efficiency. To address this issue, this study comprehensively investigates the occurrence mechanism and key influencing factors of coal and gas o…
Unstable rock masses are highly prone to collapse disasters under seismic action. To calculate the stability of toppling-type unstable rocks under bidirectional seismic action and investigate the influence of ground motion randomness on their dynamic fuzzy reliability, this study analyzes the dynami…
To more reasonably evaluate the dynamic stability of rockfall masses under seismic action, a mass viscoelastic model was employed to simulate the two primary controlling surfaces of toppling-type rockfall. Based on the principles of structural dynamics, a dynamic response analysis model and equation…
Pumped-storage power stations feature numerous tall and large shaft structures. Typically, consolidation grouting for vertical shafts involves arranging horizontal diffusion holes around the shaft walls; however, this method presents various disadvantages in actual construction, including issues rel…
Investigating the temperature field evolution in high-geothermal tunnels is crucial for optimizing thermal control strategies. Field monitoring obtained the spatiotemporal distributions of rock temperature (Tr), environmental temperature (Te), and air flow velocity (Wv), while laboratory experiments…
Due to its abruptness and extensive occurrence, slope toppling failure has become a typical deformation pattern requiring urgent attention in engineering construction and disaster prevention within the geologically complex mountainous regions of southwestern China. To thoroughly investigate its unde…
Big data has brought new opportunities to landslide research; however, due to issues such as complex data types, diverse semantic relationships, and unclear sharing mechanisms, deep mining of landslide data remains limited, and the advantages of big data are difficult to realize in landslide researc…
Shenzhen is a megacity that emerged following China's reform and opening-up, having experienced rapid urbanization with frequent land transformation. Simultaneously influenced by a subtropical monsoon climate, the jurisdiction features abundant rainfall and dense vegetation cover, rendering geologic…
Red beds refer to the collective term for red rock series deposited throughout various geological historical periods, represent typical "slip-prone strata", and are prone to triggering clustered geological hazards during intense rainfall events. A review of research findings on the development, dist…
The Ms 6.2 Jishishan earthquake in Gansu on December 18, 2023, triggered a typical earthquake-induced liquefaction-type landslide-debris flow in Jintian Village and Caotan Village, Zhongchuan Township, Minhe County, Haidong City, Qinghai Province, resulting in numerous houses being surrounded and bu…
Around 11:50 AM on February 8, 2025, Beijing time, a sudden landslide occurred at Gaojiaping, Jinping Village, Mu'ai Town, Junlian County, Yibin City, Sichuan Province, resulting in severe casualties and property damage. To investigate the kinematic process of the landslide, seismic records generate…
Deep-buried tunnels face coupled multi-hazard threats from high rock temperature, high-temperature water, and harmful gas outbursts, which induce thermal hazard effects including deterioration of the temperature-humidity environment within tunnels, intensified deformation and failure of surrounding …
Geological disasters occur frequently in China, with particularly severe disaster-induced losses. Multiple major geological disaster events in recent years have demonstrated that geological disaster prevention and control in densely vegetated mountainous areas and inaccessible regions constrained by…
As a major technical challenge in tunnel construction, thermal hazards induced by geothermal anomalies encompass disaster-causing elements including hot water and gas sources, transport pathways, dynamic mechanisms, and engineering indicators, featuring strong concealment, high suddenness, and compl…
In mid-to-late April 2024, an extreme heavy rainfall event occurred in Shaoguan City, Guangdong Province, triggering a large number of landslide disasters in the Jiangwan Town area of Shaoguan, causing certain regions to remain disconnected for nearly 36 hours and attracting widespread social attent…
Landslide hazards rank among the natural disasters with the highest frequency, widest distribution, and most severe losses globally, posing a grave threat to human life and property safety as well as major engineering facilities. Scientific monitoring serves as a critical technical prerequisite for …
Heat hazards in deep-buried tunnels have emerged as a significant challenge constraining their safe construction. This paper addresses the limitation of current tunnel heat hazard research, which primarily focuses on managing high rock temperature and high ambient temperature during the construction…
The Shuangjiangkou Hydropower Station is located in the high mountain and gorge area of Aba Prefecture, Sichuan Province, and is the world's highest under-construction earth-core rockfill dam (maximum dam height 315 m), as well as one of China's most technically challenging hydropower projects. Its …
On February 8, 2025, an extra-large high-position landslide-debris flow disaster occurred at Jinping Village, Mu'ai Town, Junlian County, Yibin City, Sichuan Province, resulting in significant casualties and property losses. This study systematically investigates the chain-forming mechanism and emer…
The Longmenshan strong earthquake zone widely features "V"-shaped erosion-denudation alpine gorge landforms. The Longmenshan fault zone within the region has continuously maintained strong tectonic activity since the Quaternary, resulting in frequent collapse and landslide disasters that seriously t…
Water impoundment of large reservoirs exerts a significant triggering effect on reservoir bank landslides. Research on early identification and deformation evolution of reservoir bank landslides can provide important support for geological disaster prevention and control in reservoir areas. The Lian…
The Dongjiekou Station of the Fuzhou Urban Rail Transit Line 4 Phase I Project is located in the city center area, constituting a three-level underground station featuring a cross interchange with Line 1. The surrounding environment is complex, with certain foundation pit retaining structures positi…
The construction of inclined shafts in extra-long highway tunnels constitutes an important auxiliary construction measure that increases working faces, facilitates mucking and material transportation, improves ventilation, and enhances construction efficiency, thereby holding significant importance …
Against the backdrop of integrated development of urban rail transit and various types of railways in China, the application of single-tube double-track shield tunnels is increasing. Compared with traditional double-tube double-track tunnels, they have larger diameters and more complex internal stru…
The Shanghai Metropolitan Railway Airport Link Line Project marks the first implementation of fully prefabricated assembly technology for circular tunnel interior structures in the domain of large-diameter shield tunnels within China. The tunnel features an outer diameter of 13.6 m and an inner diam…
Soil conditioning is one of the important methods to ensure tunnel face stability and excavation efficiency in Earth Pressure Balance (EPB) shield tunneling. Commonly used soil conditioning agents currently include water, foam, bentonite slurry, polymers, and other materials. At present, there is a …
Taking the EPB shield tunneling of Guangzhou Metro Line 18 through full-face sand layers at large burial depth as the engineering background, this paper summarizes the key technologies for soil conditioning during construction and draws the following conclusions: 1) When shield tunneling through wat…
As shield tunneling technology extends toward super-large diameters and complex geological conditions, the safety control of shield tunneling through existing building pile foundation groups has become a critical engineering challenge. This paper takes the Guangzhou Haizhuwan Tunnel Project as the r…
This project is based on a subway project in Shenzhen, which is constructed along the coast and primarily traverses sand layers, silty soil, completely weathered granite, upper-soft lower-hard strata, and rock-fill layers, with conditions including lateral crossing of bridge piles, high water pressu…
The muck and mucky soil in Nansha District exhibit characteristics including higher water content, large void ratio, low natural density, high compressibility, and low strength. Compared with marine soft soils in other domestic regions, they exert a more pronounced influence on engineering construct…
Identification and calculation of debris flow sources constitute the foundation for scientifically assessing the scale, hazard level, and comprehensive management of debris flows. However, traditional ground surveys and optical remote sensing methods struggle to effectively identify debris flow sour…
As one of the precursor characteristics of slope deformation, surface cracks can provide predictive information for early identification of geological hazards and determination of kinematic instability characteristics. Constrained by terrain conditions, manual inspection suffers from low efficiency,…
New-type urbanization necessitates smart, green, and efficient logistics systems to meet growing mobility demand. This paper explores the road-underground co-modality for urban freight transport (RUM4UFT) as a solution to urban traffic challenges, which includes three modal split strategies: mixed-u…
This article aims to enhance the reliability and intelligence level of tunnel waterproofing systems by introducing theories on water leakage causes, intelligent early warning technology, and drainage design. It investigates classification standards for tunnel water leakage and fault tree models, and…
Yangtang Bridge is a single-tower, double-cable-plane, inward-inclined cable-stayed bridge with a total length of 607 m. The main tower features an H-shaped structure with a height of 65 m, and is equipped with 17 cables in total, among which cables 1-8 are cable conduits and 9-17 are steel anchor b…
With traffic pressure continuing to mount and travel volume increasing daily in our country, it is imperative to accelerate highway construction. To alleviate traffic congestion and reduce public travel burden, shallow buried tunneling construction must be implemented in highway projects to enhance …
