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Soft rock roadway bolt used Roofex


. 2 strictly control the quality of the template process now, the common law of shaft construction, mostly by shifting the whole steel formwork F pouring wall. Since the quality template processes a greater impact on the security clearance should be strictly controlled. (1) template processing quality control. Check the template material, structure, size, strength is consistent with the design, operating procedures and related requirements. National standards GBJ21390 section 3.4.3, section 3.4.4 provides that not less than the thickness of steel formwork 3.5mm,[link widoczny dla zalogowanych], template diameter than the well bore diameter should be 10 ~ 20ram. The engineering design of the template in diameter than the shaft diameter 60ram, meet the requirements. (2) template assembly quality control. Template assembled, must be solid and reliable, the pillars must be supported in the hard bottom or pad; templates axis of displacement should be less than equal to 5mm,[link widoczny dla zalogowanych], Stem into flatness should be less than equal to 10mm. (3) the overall downward shift in the process of steel template deformation check. Whole steel formwork down after repeated use, there will be deformed, or even serious \Building wall construction, the inspection found the template deformation,[link widoczny dla zalogowanych], a timely correction; deformed and difficult to correct, we should replace the template. Building wall construction of this project, the template appears serious \5.2.3 Quality control of concrete pouring of concrete should be layered symmetric pouring wall to reduce the template displacement. To strictly control the closing slide gray flatness to prevent wellbore radius less than the design value of the local net. Concrete mold release,[link widoczny dla zalogowanych], we found cellular, Ma surface, doghole and Jiecha lax, we should in time, to ensure that the net wellbore radius and wall roughness to meet the design requirements. 5.2.4 Mine shaft construction inspection, we should focus on examination of the vertical shaft section and the wall level. Mine construction units built units to the installation of facilities submitted to the measured shaft longitudinal, cross-sectional diagram. 5.2.5 Equipment Installation center error is small (the industry standard MT5010 - 95 provides that the error is less than 5mm), a security clearance is not the main reason for the small, detailed analysis of this no longer. 6 Conclusion shaft wall of the container and asked to enhance the security question is related to mine clearance \Therefore, all construction projects (construction, design, supervision, construction, equipment supply units) should strengthen the management, strictly implement the relevant provisions, to take a scientific and rational control measures to reduce their errors or mistakes, to ensure the security clearance to \\[References] [1] MT501o95, coal installation of quality inspection and assessment Es]. About Bear intelligence (1963), male, engineer. Construction technology and management in the coal mine for many years, currently works in the Ministry of Planning and Development Pingmei Group. Soft rock roadway with the Roofex anchor \carrying capacity to keep the same bolt. Following the hydraulic expansion into the anchor bolt and the self, the new development to better meet the mine bolt Roofex deep soft rock roadway requirements. Roofex bolt is a high quality steel skewer, a layer of smooth plastic housing, water, mud or resin fixed to the bolt hole. Bolt with a patented high-quality energy damper ... sliding steel components, which allows the bolt extends out under the load when the load capacity can still remain the same. This can absorb the sudden bolt deformation, making it especially suitable for deep mine soft rock roadway, or as prominent rocks, seismic prone areas of the roadway. The length of anchor line with universal standards, and in processing, pre-selected its ability to absorb the deformation. (Evergreen) *- R-* small submersible pumps \This small and durable submersible pump, rated at only 1.5kW, the maximum lift 17.5m, the maximum displacement 440I/rain,[link widoczny dla zalogowanych], 2007 Munich, Germany in early public display. Tsurumi submersible pumps series of new products as well HS3.75S (power of 0.75kW, the outlet diameter of 75mm) and HSD2.55S type (power of 0.55kW, the outlet diameter of 50mm), all with a blender, mud and silt for the exclusion use. (Light ning) ***
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