Unstable rock formations line bending puzzle Xuan find a way to tunnel
Choice of hot spots and increase the size of the heating zone, heating tap the largest part of the deformation, the height and width of the heating zone size determined according to the deformation. Hot spots and increase the size of the heating zone as shown in photo. Photos triangle method plus hot spots and heating zones (3) correction process, when the heating zone up to the required temperature, water cooling, in order to improve the correction. 2.3 the main beam and the effect of correction of the order of operations carried out in two main beam correction. 1st heating correction of 3 parts of the measuring point on the arch deformation, heating the shape of two inverted triangle area, located on both sides of the measuring point 3, I-beam on the wing in the bottom triangle, the triangle on the web height 500mm heated area , bottom width is 500mm, and length on the wing lO00mm are also heated. The inspection found that after correction, where the deformation of the arch has been eliminated, but there is at 2.8m away from the B-side bending, the deformation of the measuring point 4 positions up arch 5mm. 2nd heating correction of 2.8m from the B-side parts of the deformation,
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ed hardy uk, in the I-beam under the bottom wing, the triangle on the web height of the heating area is 300mm, bottom width of 300mm. The inspection found that after correction,
mulberry bags uk, B-side on the arch deformation has been eliminated, the beam flatness not only imm, in line with The two heating correction Annex. Schedule triangle method heating correction 3 Conclusion Practice shows that the flame correction method is very simple, the tools and simple equipment, high accuracy deformation correction, correction of the construction cost is very low compared with the mechanical correction method for large-scale steel distortion correction of practical significance. This correction method in the absence of large-scale machinery and equipment for infrastructure construction site worth promoting. Unstable rock bending puzzle Xuan Qiu Lane line method to find the specifications and quality to ensure the roadway, digging to find line puzzle construction is very important, especially under conditions to be a short section of rock excavation bending puzzle puzzle Xuan roadway,
Beats By Dre Headphones, but the described method has obvious defects, so the scene is seldom used. Yanzhou Mining (Group) Company project in the thirty-second 165 booming coal mine shaft bottom. Turn lane construction, has been put under the test point (middle point) and the big dig construction puzzle-like drawings, and achieved good results. Practice shows that: line method to find such a simple, small error in the face just dig puzzle construction set large sample map can be find on the line card. Through the completed 50m165. Turn lane for the test showed that the five key points to the distance between two groups are in line with +5 O ~ a 20mm error requirements, the roadway is an excellent product. Experts believe that the above line to find an easy way to use existing tools to solve the problem with the line of construction needed,
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