Most papers are machine-translated to English; some are originally in English.
Showing 50 of 516 papers in Earth & Space
Large-scale structures composed of galaxies and extending to scales of up to hundreds of parsecs are known as the cosmic web. Depending on morphology and galaxy density, the cosmic web is classified into structures such as nodes, filaments, walls, and voids. Galaxies located near filaments typically…
Small Solar System bodies with perihelion distances less than 0.307 AU/66 R⊙ are known as near-Sun small bodies. The extreme solar heating and high-temperature magnetized plasma environment they encounter can reveal intrinsic information about these bodies and facilitate investigations of the near-S…
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…
Red beds mainly refer to continental clastic rocks formed during the Jurassic, Cretaceous, Paleogene, and Neogene periods, dominated by lacustrine, fluvial-lacustrine alternating, or piedmont alluvial facies, which are exposed worldwide. For red bed slopes with interbedded sandstone and mudstone, th…
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…
The dam site area of Zhangjiazhai Reservoir in Guizhou is affected by the coupling effect of karst and igneous rock intrusion, where multiple deep weathering troughs have developed, posing severe challenges to engineering construction. Through surface geological survey, pit and trench exploration, d…
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…
This paper proposes a real-time sensing method based on the dynamic response of an operating metro system to monitor the impact of adjacent construction activities on shield tunnels. The effectiveness of the method is verified through a combination of numerical simulation and model testing. The simu…
Investigating the development and evolution characteristics and disaster-forming dynamic processes of typical geological hazards along arterial highways in seismically active mountainous regions holds significant theoretical and practical importance for early hazard identification, risk assessment, …
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…
To investigate the spatial distribution heterogeneity of soil nutrients beneath Tianshan spruce forests and provide a foundational basis for forest health evaluation of Tianshan spruce (Picea schrenkiana var. tian⁃schanica) stands, this study was conducted across four research regions selected along…
The stoichiometric relationships of carbon (C), nitrogen (N), and phosphorus (P) in vegetation-soil systems are crucial for understanding the ecological functions of different vegetation types. Taking four typical artificial vegetation types (poplar, Mongolian pine, Chinese pine, and Caragana korshi…
Soil moisture is crucial for vegetation growth and terrestrial ecosystems, particularly playing a decisive role in the provision of ecosystem services in mountain forest ecosystems in arid and semi-arid regions. Using remote sensing soil moisture data, this study investigated the temporal dynamics a…
As core spatial units within oasis systems that accommodate population agglomeration, economic activities, and public service functions, oasis cities experience expansion processes that are not only constrained by oasis ecological patterns but also spatially drive oasis evolution. Systematically ide…
This study investigates the coupling and interactive relationship between new-type urbanization and low-carbon development, providing support for achieving transformation in new-type urbanization, promoting carbon emission reduction, and facilitating high-quality regional development. Based on panel…
To explore the co-evolutionary mechanism between new quality productive forces and new-type urbanization, alleviate their contradictions, and facilitate the achievement of Chinese-style modernization development goals, this study takes China's 31 provinces (municipalities and autonomous regions) as …
Gansu Province holds a pivotal strategic position in national ecological construction. Investigating the coupling coordination and its driving factors between new-type urbanization and ecological security status in Gansu Province is of great significance for consolidating the ecological security bar…
Reducing social vulnerability is of great significance for natural disaster risk prevention. At the county-level unit scale, three types of hazard-bearing bodies—population, economy, and crop farming—were selected to construct a region-appropriate social vulnerability assessment indicator system, ev…
The implementation of ecological water transfer and other policies in the Heihe River Basin has effectively alleviated the trend of ecological environment deterioration, with significant improvements in ecological environment quality. In existing research findings for this basin, studies on the spat…
Taking the Tianshan spruce forest in the central Tianshan Mountains as the research object, and based on the functional value method, this study conducted a quantitative visualization analysis of the spatial pattern of ecological service value using the Getis-Ord Gi* hotspot analysis method. The res…
Developing agricultural socialized services constitutes an important component of agricultural modernization construction. Under the "dual security" framework for grain and ecology, investigating its contribution to grain ecological efficiency holds significant importance for achieving sustainable a…
Hail represents one of the extreme weather phenomena induced by severe convection, featuring rapid development and substantial hazards, particularly posing a grave threat to the Longdong region where agriculture constitutes the primary economic sector. Against the backdrop of climate warming, in-dep…
In the summer of 2023, the Hexi Corridor experienced the strongest regional high-temperature and drought event in nearly 60 years, with frequent strong winds and dust weather; on September 6–7, Minqin County recorded the strongest September dust storm in nearly 40 years. Two strong dust storm proces…
Scientifically quantifying and analyzing the water footprint of renewable energy-based hydrogen production and its water-saving potential is of great significance for the high-quality development of the hydrogen energy industry and sustainable utilization of water resources in the provinces (autonom…
Glaciers are one of the key objects of natural resource survey and monitoring on the Tibetan Plateau, and the investigation, monitoring, and research of glaciers are of great significance for climate change research on the Tibetan Plateau. This study took glaciers on the Tibetan Plateau as the resea…
Under global warming, the disaster risk posed by extreme precipitation events is increasingly intensifying, posing severe threats to regional socio-economic development and public life and property safety. This study first conducts a spatiotemporal characteristic analysis of eight extreme precipitat…
It transforms the passive role of "time as an evolution parameter" by treating proper time (τ) as the dependent variable to inversely derive motion velocity, gravitational field strength, and mass distribution from observed time differences (e.g., Δτ/Δt). It defines the time flow ratio between diffe…
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…
The "9.5" Luding earthquake induced extensive coseismic geological hazards in the Hailuogou Scenic Area at the epicenter, with 50% of the scenic area roads located within the seismic intensity IX (9-degree) impact zone, resulting in severe road damage and complete loss of traffic capacity. To invest…
Efficient design of flexible rockfall guiding nets requires a clear understanding of how slope topography influences rockfall energy dissipation and system loads, a task often hindered by the computational cost of conventional models. To this end, this study first developed, calibrated, and validate…
On May 28, 2025, a high-altitude long-runout ice-rock avalanche-debris flow disaster occurred at the Birch Glacier in the Alpine region of Valais, southern Switzerland, completely destroying the downstream towns of Blatten and Ried, necessitating the emergency evacuation of over 300 residents, with …
This paper investigates the crack problems that emerged in the high sandy slate slope at the right dam abutment of Jiaohua Reservoir during excavation. It elaborates in detail on the crack development in the reservoir slope, the construction layout for treatment, and the specific construction techni…
The Daxingzhai Reservoir Project is primarily designed for flood control, while also serving the functions of water supply, irrigation, and ecological water replenishment. Through a two-stage curtain grouting production test, this paper systematically analyzes the effects of different grouting press…
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…
This paper investigates the integrated application of the GIN grouting method and intelligent grouting system in rock mass grouting, using the Lesotho Polihali Dam project as a case study. To address the challenges of difficult control, low efficiency, and significant quality fluctuations associated…
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…
Deep strata of coarse-grained Soil-Rock Mixture (SRM) are widely distributed in southwestern China, posing a serious threat to construction and operational safety due to their loose structure, high porosity, and abundant rock blocks. Tunnel excavation in such deep-buried, fractured, and highly heter…
Taking the "Banbiyan" dangerous rock in the Three Gorges Reservoir area as the research background, the damage evolution characteristics of this type of shear zone-bedrock interface under wet-dry cycles were investigated through wet-dry cycle tests, shear tests, and numerical simulation methods. The…
