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Izumi C.,Oriental Consultants Ltd | Akutagawa S.,Kobe University | Tyagi J.,Delhi Metro Rail Corporation. | Abe R.,Oriental Consultants Ltd | Ravi Sekhar C.,CSIR - Central Electrochemical Research Institute
Tunnelling and Underground Space Technology | Year: 2014

Despite of the advancement of monitoring devices at construction sites and the rapid progress of data management and IT, accidents in construction are still threatening not only site workers but also the public. It is difficult to cover all the dangerous areas on a construction site with expensive devices. To overcome these problems, a new monitoring method, called On Site Visualization (OSV, for short), has been developed. Unlike a conventional method of data acquisition, the use of light emitting sensors to execute monitoring by OSV enables real-time data processing and visualization on-site, so that the state of deformation, strain, inclination and etc. of concern is grasped with no delay in time and is shown visually to anyone nearby. Rational use of the new scheme based on the OSV offers a new stage whereby visually shared real-time information about the structures of concern could lead to a new paradigm of field measurement and a safer working environment. This paper describes the application example of the OSV monitoring system in the open cut excavation site of Delhi Metro in New Delhi, India. In the evaluation of the project, the role and effectiveness of OSV as a part of safety management were confirmed through a questionnaire survey given to the workers and public citizens. © 2014 Elsevier Ltd.


Tewatia S.K.,Central Soil and Materials Research Station | Sridharan A.,Indian Institute of Science | Singh M.,Delhi Metro Rail Corporation.
Geotechnical and Geological Engineering | Year: 2012

Degree of consolidation, U, is defined in two ways: (1) by settlement analysis and (2) by dissipation of pore pressure. Equations of vertical and radial consolidations are derived by equating the above two U. The new equations are compared with the existing equations of vertical and radial consolidations. It is shown that new equation of radial consolidation is exactly same as Barron's equation of equal strain radial consolidation while in case of vertical consolidation it is similar to later part of Terzaghi's equation of vertical consolidation. A few possible reasons and advantages of comparison are given. The theory of rapid loading methods is based on the equality of these two degrees of consolidations. It is concluded that in rapid loading methods the next load increment can be applied at any time in radial consolidation once the effects of initial compression are over. However, in vertical consolidation it can be applied only after 60% consolidation. © 2011 Springer Science+Business Media B.V.


News Article | February 18, 2017
Site: cleantechnica.com

A total of 18 project developers from India and abroad toiled for almost a day and a half in one of the largest solar power auctions in India. The competitive auction for the 750 megawatt (MW) solar power park in Rewa, Madhya Pradesh, has yielded the lowest-ever tariff for a solar power project in India. The contract for development of the solar park has been awarded to three companies that will set up 250 megawatts of capacity each. For a tender of 750 megawatts, cumulative bids of 7,500 megawatts were placed by participating companies. Three of these companies had offered to set up the entire capacity. The three units of the solar power park have been awarded at tariffs of Rs 2.970 to Rs 2.979 per kWh (4.4¢/kWh). The lowest bid was placed by ACME Cleantech Solutions, one of the leading solar power project developers in India. Mahindra Renewables, part of a large industrial conglomerate, secured a 250 MW unit at Rs 2.974/kWh, and Solenergi secured the third unit at Rs 2.979/kWh. The bids placed by these developers are for only the first year of project operations. The tariffs will increase by Rs 0.05/kWh (0.07¢/kWh) for a period of 15 years. Thus, the levellised tariff for all three units will be around Rs 3.30/kWh (4.9¢/kWh). The previous low price bid for a solar power project in India was Rs 3.00/kWh (4.5¢/kWh) in a tender for a rooftop solar power tender. However, this project will receive substantial subsidies. Aside from subsidized projects, a subsidiary of Fortum placed a bid of Rs 4.34/kWh (6.4¢/kWh) to become the lowest unsubsidised solar tariff bid in India until the Rewa auction. Some of the reasons for the sharp drop of 31.5% at the Rewa auction from the previous low include: availability of land for the project developers, open access for sale of electricity, commitment by the International Finance Corporation for low-cost lending, and long-term power purchase agreements signed with the Delhi Metro Rail Corporation. Some of the project developers that failed to make the cut in the auction include: Orange Renewables, Torrent Power, GDF Suez, RattanIndia Power, Aditya Birla Renewables, Azure Power, Canadian Solar, ReNew Power, SBG Cleantech, and Enel Green Power. Buy a cool T-shirt or mug in the CleanTechnica store!   Keep up to date with all the hottest cleantech news by subscribing to our (free) cleantech daily newsletter or weekly newsletter, or keep an eye on sector-specific news by getting our (also free) solar energy newsletter, electric vehicle newsletter, or wind energy newsletter.


Kalsi N.,Delhi Metro Rail Corporation. | Kiran R.,Delhi Metro Rail Corporation.
Indian Journal of Agricultural Sciences | Year: 2015

This study attempts to understand the utilization of land for Development from the perspective of the stakeholder. A balanced economic development embracing rural or agriculture on one hand and urban or industrial growth on the other side, is indispensable for emerging economies like India. The present research is a study of the diverse objectives and how they can be attempted, with a least possible resistance or friction, through a medium of consultative approach. The results have been derived through a survey of stakeholders, covering land owners and other stakeholders through a case study of Greater Mohali Region of Punjab, primarily an agrarian state. The paper tries to throw light on recent evolving land legislatures and compare it with stakeholders options, preferences and incentives needed to facilitate land utilization for development. The results showed that stakeholders are less averse to spare land for certain key sectors like transport, social infrastructure like health and education. Not only this, the acceptance is more if the methodology is packaged through smooth processes, the approach is sensitive and incentivized with marketbased compensation.


Gupta A.K.,Delhi Metro Rail Corporation. | Kumar M.,Delhi Metro Rail Corporation.
Water and Energy International | Year: 2014

Delhi Metro Rail Corporation Ltd. started the construction of 65 kms of its Phase-I comprising of 3 lines in 1998 and was completed in 2006. DMRC is receiving power at 220 kV at one and at 66 kV at five High Voltage (HV) Receiving Sub Station (RSS) in phase I. In 2006, based on successful completion of phase-I, Phase-II expansion of DMRC network comprising of 103 kms required 8 HV Substations. One RSS each was at 220 kV #x0026;132 kV and six were at 66 kV. IEC 61850 was the protocol used for protection in Phase-II substations. Now Phase-III project for 136 kms is in progress and will require additional 11 HV Substations and augmentation of two existing substations. One of the substations in phase II at Church Road was being constructed to feed the power supply requirements of Badarpur Line (L6) and the Airport Line. This substation was planned to be constructed on a plot size of 5000 square meters, adjacent to the North Block on the Church Road. The substation contract was awarded with the equipments suitable for the above ground. The plot was adjacent to the Rashtrapati Bhawan, hence required the clearance from the Central Vista Committee (CVC). CVC desired that the above ground sub - station would cut the view of the North Block flanks and the Rashtrapati Bhawan. Since this was the only space in this area where 5000 sqm of land was available, hence it was redesigned at minus nine meters for the incoming cable gallery, minus seven meters for the GIS room and minus six meters for the transformer yard complying to the conditions of the CVC. In this paper the experiences will be shared that were faced in meeting the challenges in constructing a below ground substation with the equipments procured for the above ground RSS. © 2015, Central Board of Irrigation and Power. All rights reserved.


Gupta A.,Delhi Metro Rail Corporation. | Singh A.,Delhi Metro Rail Corporation. | Jain R.,Delhi Metro Rail Corporation.
BHR Group - 16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015 | Year: 2015

This paper presents the safety procedures and emergency rescue plans which are documented and practiced by Delhi Metro based on its experiences of operations for more than twelve years. The paper starts with description of the Tunnel Ventilation System (TVS) and followed by the Emergency Management Plan which includes the roles and responsibilities of different personnel and the procedures for handling the different emergency situations including the strategy adopted for two trains evacuation from an underground tunnel section. The methods and means planned to accurately locate the fire on the incident train in tunnel for the driverless trains for Delhi Metro Phase-Ill are also described. The experiences from the few incidents involving the evacuation from the train in tunnel are also mentioned in this paper. © BHR Group ISAVFT 2015.


Kalsi N.,Delhi Metro Rail Corporation. | Kiran R.,Delhi Metro Rail Corporation. | Kiran R.,Thapar University
Indian Journal of Agricultural Sciences | Year: 2015

Sensitized and consultative approach is critical to defuse agrarian crisis in India. Unified development strategy of urban-rural continuum can be a natural outcome to discover a collectively acceptable model to key stakeholder. In the postulated model, the precincts of land owner, agriculturist, developer, Government or buyer are seen to be melting away. "Framework for acceptable land assembly" is critical for development of city regions, which is undeniably an uphill task, worldwide today. Urbanization is an engine of growth for which Regional and Master Plan is an important tool for development. Yet land-owners resistance has power to stall even a well conceptualized, sustainable, practical, statutorily compliant, technically sound, and financially viable "Master Plan". The consequence is that the landowner or agriculturist feels alienated in the development process resulting in agrarian crisis and possible rural-urban divergence. Exploring this trend further a questionnaire as primary research tool was administered to stakeholders- landowners, Developers or Government and End User from India, a third world country to identify preferential mode(s) of land assembly. The study tries to converge and extract the most appropriate method and infers that land assembly has got fused with development process. In the end the paper brings out innovative implementation model suitable to all stakeholders as a feasible way onward. The paper tries to highlight the research gap for establishing judicious allocation of land for rural-urban synergy and tries to find an answer whether going vertical for both is possible? © 2015, Indian Council of Agricultural Research. All rights reserved.


Malik S.,Delhi Metro Rail Corporation. | Agrawal P.K.,Race Course Station of Delhi Metro | Billore U.,DMRC
Indian Concrete Journal | Year: 2010

Tunnelling using Tunnel Boring Machines (TBM) is a huge investment in itself, but is often adopted for safe and speedy construction. However, when unforeseen and unfavourable conditions are encountered, it becomes important to compare other available tunnelling methods also. In this case a tough rock was encountered in front of the TBM and an analysis of various available alternatives was made to fnd a solution to progress with tunnelling.


News Article | January 11, 2016
Site: cleantechnica.com

India’s rooftop solar power program has received a much-needed boost even as sector experts believe that the target of 40 GW installed capacity by 2022 looks extremely ambitious. Officials of the Ministry of New & Renewable Energy (MNRE) recently announced that the World Bank, the Asian Development Bank, and the newly-founded BRICS development bank will provide $500 million each for development of rooftop solar power projects in the country. The funds will be used for providing a 30% subsidy to public institutions that set up rooftop solar power systems. Individuals or entities not eligible for this subsidy may also be able to source low-cost debt finance from these funds. India has set a target to have 100 GW of solar power capacity operational by April 2022; this includes a target of 40 GW for rooftop solar power systems. Rooftop solar power capacity represents just 10% of the 5 GW solar power capacity currently operational in India. Increasing the capacity to 40 GW in about 75 months will be a gargantuan task. The government has taken initiatives to boost development of the sector. The Cabinet of Ministers recently approved a proposal that will increase the subsidy for rooftop solar power systems to $770 million by 2022, which is expected to be in addition to the debt funds raised from international development banks. Thankfully, both project developers and consumers are now looking to increase their presence in the rooftop solar power market. A subsidiary of Azure Power, one of the largest solar power project developers in India, recently secured $20 million from Overseas Private Investment Corporation to develop 19 MW of rooftop solar power capacity. SunEdison is also working in several states in India to set up rooftop and off-grid solar power systems. The US-based project developer has also set up a number of rooftop solar power projects for the Delhi Metro Rail Corporation. A number of state governments are also working on policies to mandate implementation of rooftop solar power systems on government-buildings as well as all newly developed buildings.   Get CleanTechnica’s 1st (completely free) electric car report → “Electric Cars: What Early Adopters & First Followers Want.”   Come attend CleanTechnica’s 1st “Cleantech Revolution Tour” event → in Berlin, Germany, April 9–10.   Keep up to date with all the hottest cleantech news by subscribing to our (free) cleantech newsletter, or keep an eye on sector-specific news by getting our (also free) solar energy newsletter, electric vehicle newsletter, or wind energy newsletter.  

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