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Drainage in Tunnel

Load the mind with new topic of tunnel engineering which is  Drainage of Tunnel                         BASICS ABOUT DRAINAGE IN TUNNEL In a tunnel water comes from shafts and portal which is being dug in order to achieve the alignment of tunnel, water which is being used during washing  holes of drill and progressing the tunnel during the time of construction,The water obtained from the first source cannot be easily determined and water obtained from the second cause requires analysis and investigation and can be prevented by RCC bulkhead. Exploding charge may open up a ground water source unexpectedly omitting large quantity of water into the tunnel. Such sudden shot of water give rise to conditions  An underground pocket or lake has been trapped. An underground flow with an inexhaustible source such as river or  lake has been trapped The progress of tunneling work and the maintenance o...
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Previously Asked Question

Here you will get to know on which way we are going and how we will reach the destination 1. Pick up the explosive used for tunneling in soft rocks from the following :  A. Special gelatine B. Blasting gelatine C. Ammonia dynamite D. Semi-gelatine 2. Which one of the following tunnelling method is used for lying underground sewers ? A. Needle beam method B. German method  C. Army method D. English method 3. To attain the required shape of tunnel we use : A. Cutholes B. Chisels C. Erasers D. Trimmers 4. For initial surveys of tunnel, the following activities are involved :  a. Marking portal points with concrete pillars on the ground.  b. Marking tunnel obligatory points on the topograpical maps. c. Driving lines between the fixed obligatory points. d. Preliminary setting of the tunnel on the topograpical survey of Indian maps. The correct sequence of the activities are :  A. b,a,d,c B. a,b,c,d C. d,b,c,a D. c,b,d,a 5. If 'D' is a diameter of the tunnel in meters...
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How to Reduce Carbon dioxide from cement?

Get an overview to learn the Basics of properties of cement and know how the carbon dioxide is being removed                          ABSTRACT Concrete is the most widely used building material in the world because of its beauty, strength, and  durability, among other benefits. Concrete is used in nearly every type of construction, including  homes, buildings, roads, bridges, airports, and subways. And in an era of increased attention to the  environmental impact of construction, concrete performs well when compared to other building  materials. As with any building product, the production of concrete and its ingredients does require energy  that in turn results in the generation of carbon dioxide, or CO2. The amount of CO2 produced during  manufacturing and the net impact of using concrete as a building material is relatively small. The  following features of concrete construction help m...
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