फरक पाना| Zircon Creations

 Electricity Resistivity Tomography (ERT) Resistivity contrast occurs in the subsurface between, for example, dry and water-bearing sediments, differing rock lithology, and differing weathering histories. Using an electrical apparatus with two current electrodes, one a source and the other a sink, and two potential electrodes, a depth electrical profile can be measured when the electrode spacing is progressively expanded. The field between the electrodes is distributed only near the surface when the spacing of the electrodes is close but the electrical flux flows deeper when the electrodes are further apart. The flux will crowd into the more conductive layers and will rarefy in the more resistive layers. The potential at the surface will reflect these path differences and will provide a data set for which an electrical profile model of the subsurface can be calculated. Seismic Refraction Tomography (SRT) Seismic refraction maps contrast in seismic velocity – the speed at which seis...

निराशावादी तिम्रा दृष्टिहरू प्रदूषित भइसके, तिमी देख्दैनौ केही स्वच्छ मन तिम्रा फोहोरी भइसके, तिमी देख्दैनौ केही सुन्दर तिमी कुरूप, तिम्रो मन कालो तिमी देख्छौ केवल चारै तिर स्वार्थको जालो गर्दैनौ तिमी केही आफै खुट्टा तान्छौ अरूको हरपल बिलौना मात्र गल्ती तिमी अरूको देख्छौ। आफू पानीमा बसेर ओभानो  हुन खोज्छौ। तिमी सारै नै छौ। तिमी गाह्रो नै छौ। सजिलो बन्न नसके पनि सरल त बन्न सक्छौ नि?  यो कुण्ठा के का लागि? यो रिस कसका लागि? यो आसाबादी जिविन मा निराशावादी तिमी किन?

The selection of a dam site and the type of dam to be built is a crucial decision that is influenced by a variety of factors, including topography, geology and foundation conditions, materials availability, spillway size and location, and potential for earthquakes. Topography is a major factor in the selection of a dam site, as it can impact the type of dam that is most suitable for a particular location. For example, a narrow stream flowing between high, rocky walls may suggest a concrete overflow dam, while low, rolling plains may suggest an earthfill dam with a separate spillway. The location of the spillway is also an important consideration that is heavily influenced by the local topography. Geology and foundation conditions also play a significant role in the selection of a dam site. The geological character and thickness of the strata that will bear the weight of the dam, as well as their inclination, permeability, and relationship to underlying strata, existing faul...

Engineering geological investigations play a vital role in the planning and design of hydroelectric projects, as they provide crucial information about the geological structure and properties of the terrain that the project will be built on. This information is essential for determining the techno-economic feasibility of a proposed project and ensuring that it meets current safety standards. The mainstay of geological investigations for hydroelectric projects is subsurface exploration, which includes geophysical investigation, diamond core drilling, and exploratory drifts. These methods allow engineers to gather information about the lithology, stratigraphy, and geological structure of the area, as well as the geomechanical properties of the ground and the presence of any extraordinary phenomena that may affect the stability and safety of the proposed structure.The scope of the geological investigation is determined by the stage of the project, with preliminary and reconnaissance inves...

  Overbreak in tunneling Overbreak is a section of the damaged zone in tunneling that extends beyond the calculated profile for support pieces that fall during rock excavation. It elevates the entire cost of tunneling to 15% or even more than the original construction budget. Influence factors for overbreak Over-break is discovered to be the result of the complicated interplay between poor excavation sequences, unprofessional blasting procedures, and insufficient main support. The presence of unfavorable joints, their orientations, non-cohesive filling materials, and poor groundwater conditions all contribute to the incidence of quick overbreak. Tunnel blasting, like conventional rock slope blasting, can be controlled by using controlled blasting techniques including pre-splitting, trim blasting, and line drilling, which operates best in huge rock formations. A simple crack between adjacent blast holes does not occur in geologically complicated material. A shattered shatter zone oc...

यो लडाइ शब्दको आवाज मेरो हतियार स्वतन्त्रताको पुजारी हौ भने  तिमी बन मेरो मतियार ! म बोल्छु तिमी नि आफ्नो आवाज उठाऊ परिधि भन्दा बाहिर निस्कन सिक आँट र साहस जुटाउ ! शब्द शब्द गोली गोली किन कुर्ने भोलि भोलि। आज-आज!  सुन आज  बोल आज। मनको कुरा खोल आज। नकुर भोलि ! जिन्दगी आज माटो माथी  भोलि हुनेछ माटो मुनि। केहि कुरा छैन टाढा जिन्दगीमा फुल टिप्दा किन भुल्छौ काडा। १ २ ३...अब धेरै दिन। माया भए भन। मायाले हेर सबै मायानै त छ रनबन। शब्द शब्द जोड तिमी। मनलाई मायाले गोड तिमी। सुनाइदेउ तिमी मन मुटु खोली। आज आज!  नकुर भोलि। गोलि गोलि। शब्द शव्द ..... बोल बोल.. नकुर भोलि।

Tunnel forepoling (forepoles) Tunnel forepoling (forepoles) refers to the placement of near-horizontal steel bars/pipes/sections around the periphery of the heading to form a rock support cage in weak zone areas. To support the excavation roof or tunnel crown, in other words. Forepoling should be used on rock and soil conditions that are prone to overbreak, collapses, or material inflow immediately after the following excavation. It shall be applied locally or systematically, depending on the circumstances, for the safety of the works and the prevention of overbreak. According to Warner forepolling should be densely installed to reduce the influences from stress-release at the face and the crown. Face bolts only contributed to stress-release at the face. Forepolling divides the surrounding ground of the installed area into two zones; i) outside the zone of the invisible arch consisting of forepoles and ii) inside the zone of the forepoles. Forepoles, by definition, have a larger diamet...