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| W steel is strictly prohibited to advance after stirring |
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UpdateTime：[2012/1/11 11:06:17] Hits：[2911] From：TONRY MINING SAFETY SUPPORT TECHNOLOGY CO.,LTD
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W steel is a new type mine and tunnel roof, side wall material. The influence of pressure, after use, prone to deformation phenomenon, previously recycled under W type steel strip is mainly through the well organized artificial hammer repair, both time consuming, and labor. In order to effectively reduce the cost of repair, Shandong with the Swiss mining technology decision on recycling strip directly in the underground - 350 track repair station repairs. In order to ensure that W steel repair quality, development of the company made a new press mold, the deformation of W steel in the press by mold pressing for correction of deformation, so as to achieve the reuse requirements. W steel repair mold using the upper and lower mold structure, in order to ensure the strength of die, through the plane out of two and W steel strip bulges corresponding to the 50 mm thick steel plate groove bottom welding I-steel, fixed on a press working table approach consisting of lower mould, mold through the use of 20 mm steel plate welded H-shaped steel reinforcement, and in steel by with female wire splint and press the telescopic rod. Composed of the upper and lower body mold. Extremely effective conservation of the explosion-proof dehumidifiers mold cost.
W steel reinforced pipe has excellent insulation properties, steel pipe thermal conductivity coefficient of 46.06W K / square meters, and base material of high density polyethylene thermal conductivity coefficient of 0.48W / square meters of K steel pipe in coefficient of 1%, greatly saving construction cost. Bolt used for steel making, through special processing technology, make full use of the anchor rod body mechanics performance, so that the intensity of the rod body and the rod body and tail thread strength consistent with high intensity, fast mounting torque nut and a ball tray, there is no mechanical weak surface, has high bearing strength, reliable anchoring, elongation and good, suitable for rapid installation and construction characteristics of W type steel is a new type mine pit and tunnel supporting material, the product can be associated with various anchor combined support to organizations, through which it can be dispersed into a plurality of anchor rod is connected to form an integral structure, significantly improve the overall effect of the anchor, incomplete roof rock, on the treatment of unstable surrounding rock is best.
W steel is strictly prohibited to advance after mixing; must reach the anchoring agent" waiting time" before the tightening nut, preload should comply with the design requirements; rapid installation, when the bolt installation sleeve is pushed out of the damping device effects the tight nut, the timely liquidation; should be checked prior to installation of anchor is linear, not straight through the general will cause the bolt installation difficulties and even failed to install; anchoring section may not have greasy dirt and rust, otherwise will cause the anchoring force of falling or failure sinistral and dextral anchor is contemporary coal mine roadway support among the most basic components of the rock, he will be bound together, make their own surrounding rock supporting.
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