It has been observed that in the urban center of Shanghai, land subsidence has accelerated, and the groundwater level has continued to drop even though the net withdrawn volume (NWV) of groundwater has remained unchanged since 1980. An analysis of monitoring data shows that drawdown of the groundwater level is one of the factors that have influenced land subsidence since 1980. The NWV of ground...

the subsoil and groundwater were suspected to be polluted by leakage from underground tanks around the oil storage facility in Dhanbad, Jharkhand, India. to delineate the seepage zone, integrated geophysical methods comprising Ground Penetrating Radar (GPR) and 2D electrical Resistivity Imaging (eRI) methods were employed over the suspected zone and in the close vicinity. the studies were condu...

It is necessary to obtain a fundamental understanding of the goaf gas flow patterns in longwall mine in order to develop optimum goaf gas drainage and spontaneous combustion (sponcom) management strategies. The best ventilation layout for a longwall underground mine should assist in goaf gas drainage and further reduce the risk of sponcom in the goaf. Further, in the longwall panel, regulators ...

Making use of concrete materials in cut-off walls, because of their low permeability and standing high Hydraulic Gradient caused by underground drainage, has attracted great amount of attention. Using ordinary concrete with high elasticity modulus, compared to other materials may accompany with problems including brittleness of cutoffs due to dynamic stresses. To solve this problem, adding a ce...

Abstract Leakages from buried water pipes can result in suffosion posing a threat to the environment and infrastructure existing cities. Leakage of pressure pipe into soil susceptible is very complex phenomenon, characterized by number different parameters. Taking account all parameters empirical tests leakage practically impossible. Thus, it necessary select them so that on one hand possible p...

Carbon sequestration has recently become more widely recognized as a potential means of reducing atmospheric carbon dioxide levels. Understanding the tectonic relationship discharges and sealing behavior faults is conducive for predicting long-term integrity geological storage formations. Of primary concern influence crustal deformation on leakage through fault zones during large-scale undergro...

MFL (Magnetic Flux Leakage) inspection is one of the most commonly used methods for detecting corrosion defects in pipelines. Normally, an MFL system is divided into three parts: in-pipe inspector, out-of-pipe locating system and data analyzing system, and AGM (Above Ground Marker) is a crucial device to locate the corrosion. With the fact that most currently existing AGM devices lack flexibili...

This paper contributes to the recent literature on the Green Paradox (Hoel, 2011 and Harstad, 2012) that distinguishes between regulated and unregulated regions in a Hotelling framework. In our model, different grades of oil are characterized by different costs, emission factors, and underground reserves; furthermore, the clean backstop experiences cost-reducing technical change. As a result, e...

Geologic Carbon Sequestration becomes an essential instrument which has been aimed for mitigation of global warming. More understanding of storage processes and assessing environmental, safety, and health impacts in the event of a leak to the atmosphere are certainly important. Therefore, monitoring is one of the answers enabling technologies for CO2 storage. It is expected to support multiple ...