Results 51 to 60 of about 2,538 (232)

A brief discussion on the creation of earthquake popular science courseware for different social groups

open access: yes地震科学进展, 2020
The popular science lectures are one of the main methods for public education of earthquake prevention and disaster reduction. As an absolutely necessary part of popular science lectures for earthquake,the effect of the science lectures is directly ...
Hongmei Li, Ning Liu
doaj   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

open access: yesDeep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang   +5 more
wiley   +1 more source

Paths to promoting earthquake prevention and mitigation with cultural and tourism integration in Hebei Province

open access: yes地震科学进展
Against the backdrop of cultural and tourism integration, there is an urgent need to explore innovative paths to popularize science for earthquake prevention and mitigation.
Hongmei Li, Ning Liu
doaj   +1 more source

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

open access: yesDeep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu   +3 more
wiley   +1 more source

Preliminary risk assessment of earthquake disasters in Ningbo

open access: yes地震科学进展, 2020
Based on the classical model of natural disaster risk assessment and Ningbo’s reality, this paper explores the establishment of an index system for earthquake disaster risk assessment.
Beilei Zhang, Xiao Peng, Haobo Zhou
doaj   +1 more source

A Science Instruction for the Prevention and Reduction of 2020 Nankai Earthquake Disaster in Tokushima, Southwest Japan

open access: yesProcedia - Social and Behavioral Sciences, 2014
AbstractEarthquakes occur in the region where plate tectonic activity is still going on, and have killed more than one million people during the past 25 years. Earthquakes are natural hazards, which cannot be stopped but the hazards can be prevented from becoming disasters by taking appropriate preventive measures. The prevention such as re-building by
openaire   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

open access: yesDeep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang   +4 more
wiley   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh   +12 more
wiley   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

open access: yesDeep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu   +4 more
wiley   +1 more source

2018年吉林松原MS5.7地震电离层TEC异常分析

open access: yesDizhen xuebao
利用美国喷气动力实验室(JPL)提供的全球电离层总电子含量(TEC)网格数据分析2018年5月28日吉林松原MS5.7地震空间电磁异常情况。通过算法对比确定滑动四分位法的优势,并利用该方法计算此次地震从震前14天至震后6天的电离层TEC异常变化的时间序列,结合空间环境和ΔTEC异常二维空间分布情况进一步分析,结果显示:① 极区磁亚爆强烈时段越靠近北部电离层扰动越强烈;② 震前TEC观测值先增大后减小,震后又回升,电离层异常幅度随着震中距的减小而增大;③ 电离层在空间分布上 ...
Hua Nian   +6 more
doaj   +1 more source

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