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Application of DInSAR for short period monitoring of initial subsidence due to longwall mining in the mountain west United States

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International Journal of Mining Science and Technology 2020年第1期30卷 33-37页

作者： Jessica M.Wempen Department of Mining Engineering University of UtahSalt Lake City 84112USA

Differential Interferometric Synthetic Aperture Radar(DInSAR),a satellite-based remote sensing technique,has application for monitoring subsidence with high resolution over short *** uses radar images to measure centimeter-level surface *** the images,ground resolution can be relatively high,with each data point(pixel)representing the average displacement over an area of several square *** image data are acquired regularly which allows subsidence to be monitored sequentially over short periods;imaging periods typically range from weeks to *** subsidence over short periods with high spatial resolution has potential to provide insight into the dynamics of subsidence and into relationships between mine advance and *** this study,for three longwall mines in the western United States,initial subsidence occurring at the start of longwall advance is quantified over short periods(12–72 days).C-band interferometric wide swath Synthetic Aperture Radar(SAR)images from the Sentinel satellites are used to quantify the ***,the data show initial development of subsidence,expansion of the subsidence trough,and the advance of subsidence in the direction of mining.

关键词： Longwall mining Interferometry subsidence

Relationship between surface subsidence factor and mining depth of strip pillar mining

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中国有色金属学会会刊：英文版 2011年第S3期21卷 594-598页

作者： GUO Wen-bing1, 2, HOU Quan-lin 1, ZOU You-feng2 1. College of Earth Science, Graduate University of Chinese Academy of Sciences, Beijing 100049, China 2. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China Chinese Acad Sci Coll Earth Sci Grad Univ Beijing 100049 Peoples R China Henan Polytech Univ Sch Energy Sci & Engn Jiaozuo 454000 Peoples R China

Strip pillar mining is one of the most important technical measures to control mining subsidence in China. Mining depth is one of the most important factors that can affect the mining subsidence in strip pillar mining. Six numerical simulation models were set up to simulate the surface subsidence of strip pillar mining in different mining depths. The mining depth in these six models ranges from 300 to 800 m. The simulated results were compared and analyzed. The formula was established based on the simulated results. It demonstrated that the subsidence of strip pillar mining method is related to mining depth. While the other conditions are the same, the subsidence of strip pillar mining increases with the increase of mining depth by logarithmic relationship.

关键词： subsidence factor strip pillar mining mining depth numerical simulation

Water distribution extracted from mining subsidence area using Kriging interpolation algorithm

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中国有色金属学会会刊：英文版 2011年第S3期21卷 723-726页

作者： DAI Hua-yang, REN Li-yan, WANG Meng, XUE Hai-bing College of Geosicence and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China College of Geosicence and Surveying Engineering China University of Mining & Technology Beijing 100083 China

By comprehensively analyzing the data of geology and mining, Kriging algorithm was introduced to analyze the thematic information of geological data, to rapidly extract mining parameters for predicting mining subsidence, and to effectively integrate geomorphology and predict information. As a result, the change information of water body is successfully detected from the prediction of surface subsidence due to mining activity. Analysis shows that the elevation of farmland in the west side of water body will be lower than ever, and the west part farmland will be submerged. However, there is no evidence for impacting the villages. All the information provides a reference for efficiently assessing environmental impact due to mining activity, which can help to govern the subsidence of the area reasonably.

关键词： Kriging interpolation water body mining subsidence prediction parameters data fusion

Simulation of regional land subsidence in the southern Yangtze Delta

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Science China Earth Sciences 2008年第6期51卷 808-825页

作者： XUE YuQun WU JiChun ZHANG Yun YE ShuJun SHI XiaoQing WEI ZiXin LI QinFen YU Jun Department of Earth Sciences Nanjing UniversityNanjing 210093China Shanghai Institute of Geological Survey Shanghai 200072China Jiangsu Institute of Geological Survey Nanjing 210018China

Investigation of the deformation characteristics of individual hydrostratigraphic units is the key to construct a regional land subsidence model. All of 12 hydrostratigraphic units in the study area were discussed throughout. On the basis of the measured data of groundwater level, five kinds of changing patterns of groundwater level were deduced and the relationship between the deformation characteris-tics of aquifer units and the corresponding changing patterns of groundwater level was discussed. The study area is 1.7×104 km2, where the geological condition is complex. The changing patterns of groundwater level the hydrostratigraphic units have experienced vary from site to site and from time to time. Consequently, the deformation characteristics of units are sophisticated. An identical hydros-tratigraphic unit may exhibit different deformation characteristics, such as elasticity, elasto-plasticity, visco-elasticity, and visco-elasto-plasticity, at different sites or during different periods, not to mention the different units. The existing models are difficult to describe the complex visco-elasto-plastic con-stitutive law under the condition of land subsidence. So the Merchant’s model was modified to depict the visco-elasto-plastic behavior of units. Then a three-dimensional flow model with variable parame-ters and a vertical one-dimensional subsidence model were constructed and coupled. The coupled model was applied in simulating land subsidence in the southern Yangtze Delta and a satisfactory re-sult was obtained. The simulation results show that the new coupled model can depict the complex geological conditions and describe the developing process of land subsidence very well in the south-ern Yangtze Delta. The new model can surely be used to predict land subsidence in the future, which is very helpful to taking measurements to control land subsidence.

关键词： regional land subsidence model deformation characteristics of soil creep couple numerical simulation

Analysis of elastoplasticity and rheology due to mining subsidence

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Science China Earth Sciences 2008年第6期51卷 826-836页

作者： WU Xiong WANG XiaoGang DUAN QingWei JIA ZhiXin XU NengXiong SUN YanDong School of Water Resources and Environment China University of GeosciencesBeijing 100083China China Institute of Water Resources and Hydropower Research Beijing 100044China

At present, as the easily mining resources are being increasingly depleted, the exploitation of coal under buildings, water-bodies and railways is imminent for the sustainable production. Probability in-tegral method is a general method for mining subsidence in the coal system. Because of poor under-standing of mining subsidence for other sections, the authors suggest probability integral method for the study of coal mining under buildings, water-bodies and railways. Moreover, the calculation result of probability integral method should be corrected by numerical simulation method. Based on practical projects, the impact has been evaluated on the security of Xifeihe left embankment under coal mining. Combining with the results of probability integral method, we propose that the 600 m far from em-bankment is a good rationality. This article provides the basis for the rational exploitation of coal re-source which is a major practical problem under the premise of Water Infrastructure Security. Fur-thermore, it also can be served as a reference for the similar projects, such as mining Xiaolangdi res-ervoir area, mining Yuecheng reservoir and mining the major channels of Middle Route South to North Water Transfer.

关键词： mining subsidence numerical simulation the elastoplasticity model rheological model the evaluation of embankment safety

Advances and Practices on the Research, Prevention and Control of Land subsidence in Coastal Cities

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Acta Geologica Sinica(English Edition) 2020年第1期94卷 162-175页

作者： YAN Xuexin YANG Tianliang XU Yan Luigi TOSI Esther STOUTHAMER Heri ANDREAS Philip MINDERHOUD Anirut LADAWADEE Ramon HANSSEN Gilles ERKENS Pietro TEATINI LIN Jinxin Roberta BONì Jarinya CHIMPALEE HUANG Xinlei Cristina Da LIO Claudia MEISINA Francesco ZUCCA Key Laboratory of Land subsidence Monitoring and Prevention Ministry of Nature Resources of ChinaShanghai 200072China Shanghai Institute of Geological Survey Shanghai 200072China Shanghai Engineering Research Center of Land subsidence Shanghai 200072China Center for Land subsidence of China Geological Survey Shanghai 200072China Institute of Geosciences and Earth Resources National Research CouncilVia G.Gradenigo 6Padova 35131Italy Land subsidence International Initiative(LASII) UNESCOParisFrance Department of Physical Geography Faculty of GeosciencesUtrecht UniversityPrincetonlaan 8A3584 CSUtrechtThe Netherlands Geodesy Research Division Institute of Technology BandungBandung 40132Indonesia Deltares Research Institute Daltonlaan 6003584 BK UtrechtThe Netherlands Department of Groundwater Resources Ministry of Natural Resources and EnvironmentLatyaoChatuchak Bangkok 10900Thailand Delft University of Technology Faculty of Civil Engineering and GeosciencesStevinweg 12628 CNDelftThe Netherlands Department of Civil Environmental and Architectural EngineeringUniversity of PadovaVia Marzolo 9Padova 35131Italy Earth&Environmental Sciences Dept.University of Pavia Pavia 27100Italy Institute of Marine Sciences National Research CouncilArsenale Tesa104-Castello 2737/FVenice 30122Italy

Land subsidence severely threatens most of the coastal plains around the world where high productive industrial and agricultural activities and urban centers are concentrated. Coastal subsidence damages infrastructures and exacerbates the effect of the sea-level rise at regional scale. Although it is a well-known process, there is still much more to be improved on the monitoring, mapping and modeling of ground movements, as well as the understanding of controlling mechanisms. The International Geoscience Programme recently approved an international project(IGCP 663) aiming to bring together worldwide researchers to share expertise on subsidence processes typically occurring in coastal areas and cities, including basic research, monitoring and observation, modelling and management. In this paper, we provide the research communities and potential stakeholders with the basic information to join the participating teams in developing this project. Specifically, major advances on coastal subsidence studies and information on well-known and new case studies of land subsidence in China, Italy, The Netherlands, Indonesia, Vietnam and Thailand are highlighted and summarized. Meanwhile, the networking, dissemination, annual meeting and field trip are briefly introduced.

关键词： land subsidence coastal cities case studies International Geoscience Programme

Inferring decelerated land subsidence and groundwater storage dynamics in Tianjin–Langfang using Sentinel-1 InSAR

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International Journal of Digital Earth 2022年第1期15卷 1526-1546页

作者： Xuguo Shi Tongtong Zhu Wei Tang Mi Jiang Houjun Jiang Chen Yang Wei Zhan Zutao Ming Shaocheng Zhang School of Geography and Information Engineering China University of GeosciencesWuhanPeople’s Republic of China College of Geoscience and Surveying Engineering China University of Mining and TechnologyBeijingPeople’s Republic of China School of Geospatial Engineering and Science Sun Yat-Sen UniversityGuangzhouPeople’s Republic of China School of Civil Engineering Anhui Jianzhu UniversityHefeiPeople’s Republic of China Institute of Karst Geology CAGS/Key Laboratory of Karst DynamicsMNR&GZARGuilinPeople’s Republic of China The First Monitoring and Application Center China Earthquake AdministrationTianjinPeople’s Republic of China

To meet the growing demand for socioeconomic development,a large amount of groundwater is extracted from confined aquifers *** North China Plain has experienced considerable groundwater depletion and subsidence during the past six *** this study,we use Sentinel-1A/B SAR images from 2015 to 2020 to map the ground subsidence of the Tianjin–Langfang *** subsiding zones centered at Guangyang,Wuqing–Bazhou,and Jinghai are identified with maximum subsidence rates of 98.1,121.8,and 104.7 mm/*** and long-term signals are separated from time series subsidence and hydraulic measurements using continuous wavelet transform to retrieve aquifer *** long-term subsidence,which fits well with an exponential decaying model,remarkably slows down in our study *** elastic skeletal storage coefficients range between 0.52×10−3 and 9.66×10−*** then retrieve the spatial–temporal variations of total groundwater storage,recoverable groundwater storage,and irreversible groundwater *** storage depletion rates are apparently reducing,which benefits from the operation of the South-to-North Water Transfer Project and local groundwater management practices.

关键词： North China Plain aquifer parameter South-to-North water transfer project groundwater storage subsidence

Dynamic subsidence prediction of ground surface above salt cavern gas storage considering the creep of rock salt

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Science China(Technological Sciences) 2010年第12期53卷 3197-3202页

作者： WANG TongTao1, YAN XiangZhen1, YANG XiuJuan1 & YANG HengLin2 1 College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266555, China 2 CNPC Drilling Research Institute, Beijing 100097, China 1. College of Pipeline and Civil Engineering China University of Petroleum Qingdao 266555 China2. CNPC Drilling Research Institute Beijing 100097 China

A new model is proposed to predict the dynamic subsidence of ground surface above salt cavern gas storage during the leaching and storage, which takes into account the creep of rock salt. In the model, the extended form of Gaussian curve is adopted to figure out the shape of subsidence areas. The corresponding theoretical formulas are derived. In addition, parameters are studied to investigate the surface subsidence as a function of the salt ejection rate, internal pressure, buried depth, diameter, height, running time, etc. Through an example, the subsidence of the salt cavern gas storage located at Jiangsu of China obtained by the new model was compared with those by Peter A F formula, Schober & Sroka formula and FLAC3D through simulation. The results showed the proposed model is precise and correct, and can meet the actual engineering demands. The surface subsidence is equidirectional with the increase of salt ejection rate, depth, diameter, height, and running time, but reverse to the increase of internal pressure. The depth, diameter, running time and internal pressure have great effects on the subsidence, whereas the salt ejection rate and height have little influences on it.

关键词： salt cavern gas storage dynamic subsidence creep of rock salt extended form of Gaussian curve calculation model

Spatial variability of soil moisture in a mining subsidence area of northwest China

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International Journal of Coal Science & Technology 2022年第5期9卷 160-171页

作者： Lu Bai Yajing Wang Kai Zhang Yingming Yang Kaikai Bao Jiangang Zhao Xiaonan Li School of Chemical and Environmental Engineering China University of Mining and TechnologyBeijing 100083China State Key Laboratory of Water Resource Protection and Utilization in Coal Mining Beijing 102211China

The current study investigated the impact of coal mining on deep soil moisture from the perspective of the absolute value of soil moisture.A combined classical statistics and multi-dimensional geo-statistics approach was employed to analyze the temporal and spatial changes in soil moisture from 0 to 10 m in the mining face of the Nalin River No.2 Mine in Northwest China from the perspective of spatial *** results of the study show that compared with the control area,the average value of soil moisture in 1-and 2-year subsidence areas decreased by 1.18%and 0.96%,respectively,whereas the coefcient of variation increased by 17.92%and 3.63%,*** of soil moisture spatial distribution results showed that the spatial variability of soil moisture in the control area was less than that in the subsidence areas,and the spatial variability of soil moisture in the 2-year subsidence area was less than that in the 1-year subsidence area,indicating that mining increases the spatial variability of soil moisture and that the degree of spatial variability of soil moisture decreases as the subsidence enters the stable *** results provide evidence for the mechanism by which coal mining subsidence afects soil *** fow caused by surface cracks,soil texture,the soil pore microstructure,and other factors in the coal mining subsidence area are the primary drivers of the increase in spatial variability of soil moisture.

关键词： soil moisture subsidence