... limited applications over some underground coal mines and commercial applications for open pit mines. In this paper, the authors will review the subsidence monitoring over one of the Colorado operations utilizing precise GPS measurements. This case study will address geologic setting, vertical...

... Abstract Coal sinkhole region has attracted attention of Chinese government and photovoltaic enterprises to be used for photovoltaic power generation facilities construction land presently. The special requirements of subsidence and deformation were analyzed for photovoltaic power generation...

... Abstract Subsidence is a time-dependent process and controlled by various factors including methods of mining, depth of extraction, thickness of deposit, and topography, as well as the in-situ properties of the rock mass. Subsurface deformation leading to surface subsidence includes the local...

... Abstract In this paper, the relationship between the dynamic surface subsidence and overburden separated strata has been studied under the condition of sedimentary coal measure strata. When the underground coal seam is mined, the ground surface subsidence will be caused. The surface subsidence...

... ABSTRACT: Subsidence engineering comprehension is crucial if planners and designers are to develop effective measures to prevent, minimize and or remedy subsidence effects. Subsidence and its components, tilt and strain, have disastrous effects on structures, human life and mining operations...

.... However, the improvement of its monitoring accuracy is a key issue for practical applications. In this paper, a simple multi-temporal analysis is proposed for this purpose. In order to verify the procedure, the monitoring of the subsidence in a city in Indonesia is shown as an example. The results...

... Reservoir Characterization Thickness metals & mining Simulation Upstream Oil & Gas surface subsidence physical model simulation block size elsevier ldt granular material numerical simulation geometry thongprapha particle subsidence geomechanics research unit American...

..., causes significant subsidence in the south section of the fault area, as can be seen by the value of 10 m recorded at one control point (Figure 5). During this phase the slope began with the instabil- ity signs and, as commented before, radar monitoring initiates. It is in this moment when the geometry...

... Upstream Oil & Gas Research Institute metals & mining calculation borehole isolation roof surface subsidence monitoring monitoring pillar method goaf Reservoir Characterization displacement allowable safety distance safety distance surface isolation roof structural geology...

... amplifications may be 3–5 times that at the base. Particularly these amplifications may be quite large particularly near steep cliffs. 1 Introduction There are many abandoned mines in various parts of Japan and the recent earthquakes showed these mines are quite vulnerable to cause sinkholes and subsidence...

... measurable subsidence. The impact of mining can be theoretically determined by a limiting impact angle. The paper deals with the assessment of mining in the ninth and seventh blocks at Karvina Mine Lazy Plant and its influence on the surface. The process of failure of the mining seam's rigid roof in both...

... by the drilling and blasting method (mine method) are presented. The crack evolution law and scaling law in the overburden are revealed. The corresponding relation between ground subsidence and the crack evolution scaling law is established. Then, these results are used to analyze and predict the ground...

... pollution, subsidence and collapses. Due to this critical situation many efforts are posed to limit the hazard due to mines. The paper presents some guidelines to deal with mine through the description of a case study. The study develops through 1. historical data collection 2. geometrical and geotechnical...

... the non-conventional subsidence through empirical methods and various numerical approaches. The empirical predictive method has been found very site specific due to the variations from site to site. This paper provides a review of the numerical modeling methods used to evaluate the geotechnical mechanisms...

... Abstract: This paper describes the findings of a numerical modelling based case study to assess the feasibility for extraction of pillars with controlled subsidence of the sur-face in Mahuda Top seam III at Murlidih Bord and pillar mine under Jharia coalfield India. Controlled subsidence...

... ABSTRACT: Subsidence during shallow tunnels construction can represent a critical aspect when buildings or primary roads are undercrossed. Similar situations are often occurring within the main project of modernization of the Italian motorway network crossing the Apennine between Bologna...

... and positioned both inside and outside the subsidence area; two RTK (Real Time Kinematic) differential GPS markers: one placed on a stable zone, the other vertically above the cavern, measuring the subsi- dence relative to the centre of the study zone with an accuracy of ±5 mm. This set-up enables...

... is characterised by a thick lens of gypsum and anhydrite covered by dolostones and with many underground cavities generating subsidence. Indiscriminate urbani- zation led to build in risky areas. At the second site, gypsum and anhydrite were quarried with a room and pillar technique. At present, lower levels...

... Abstract An investigation of a subsidence event in the Collie Basin of Western Australia, nearly 50 years after mine closure, has determined that the likely mechanism of subsidence development was the collapse of weak sandstone in the mine roof. The implication of this recent subsidence event...

...835 Rock Engineering in Difficult Ground Conditions Soft Rocks and Karst Vrkljan (ed) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-80481-3 Foundation design on mining subsidence terrain S. Zekan, M. Stevi & A. Hamzabegovi The Faculty of Mining, Geology and Civil Engineering, Tuzla...