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Rock blasting open pit mining to predict and analyze

All of the premise. Full use of hole, increasing the length of charge, blasting is an effective option to improve trails. 3, the above parameters reasonable millisecond blasting blasting ore forecast and analysis, the rational for the mine recommended millisecond blasting parameters in Table 4. Table 2 hole network parameters on the waterfall breaking quality. Pi hole options l234 nearly coefficient set 1l_01.31.62. O rock the boat fabric parameters i1l_01.171.33J, 55 hole network parameters aXW (m) 5,3 × 5.36. O × 4.66,7 × 4.27.5 × 3.8 explosive rock fragmentation average X (cm) 3O. 430.430.430.4 large rate R () l6.111.68.14.5 two break unit cost (yuan / ton) 0.0610. o45O. O320'O17 blasting unit into a car h (yuan / ton). O. 29O. 270.26O. 24 Table 3 explosives consumption effects of blasting explosives consumption options 12345 q (kg / m O350.400.450.500.55 rock the boat fabric parameters / i0.901.071.251.421.59 explosion rocks The average block degree (cm, 37,935. O32.530.428.6 rate too soil R () .25,7 i8.6l1.7S.32, 7 two broken units into Feng Y (yuan / readers) 0.100. 07O.045O.0240.01 blasting unit into Feng M (yuan / ton) O.260.25O.240.230.26 iv iv Shan Ying Die 01995. N3 environmental protection and energy saving building materials and reasonable 7 Table 4 millisecond blasting parameters table pitch holding the drum from the Pi hole practice area nearly as explosive charge consumption millisecond interval (m) (m) (m0) (kg / m.) Time (m9) Structure 7.53.82.028.50.55O four consecutive Conclusion 1, the average fragmentation of ore pre-Lie. Statistics show that, under normal circumstances a reasonable degree of average size is about large block size of 1 / 3. according to the specific mine crusher specification model to determine large size,[link widoczny dla zalogowanych], the forecast can be Kuznemov Mathematical modeling. Reverse required to meet the reasonable degree of average block blasting parameters and explosives manure type. 2, digital-analog integrated application Kuznemov, Rosin-Rammler number of modules and blasting cost projections for production blasting design model comparison and multi-parameter optimization program is improve blasting design quality, improved blasting results, lower production cost effective way to burst through. 3, according to mine rock fragmentation distribution curve, by adjusting the design parameters and blast hole network parameters, can determine a reasonable degree of mineral composition of rocks 4. The large size of the various mining index by Rosin - Rammler model can estimate the number of large rate, evaluation of blasting results 5, in this study, the production of blasting blasting optimization and prediction based on rock fragmentation mine blast distribution and blasting cost as the objective function, determine a reasonable blasting parameters. Kuz - Ram model and the cost of digital-analog does not involve blasting rock pile where any form of floor broken, backlash and vibration effects such as damage to the quantitative prediction of blast effects. So , still need further research work in the refined and improved. (Continued from page 2) (6), dust plant building materials systems and processing equipment in testing conditions, the development of new materials and filter media has a new improved. products and new technology, and formed a certain scale exports of the international market, by users. 2. choose collecting equipment is a comprehensive engineering,[link widoczny dla zalogowanych], it is necessary to understand the production technology, but also know how to deal with smoke performance,[link widoczny dla zalogowanych], mechanical equipment and automatic control. In the whole production system, every aspect of their parts are indispensable. to the overall research, carefully optimized dust removal equipment. in order to have better results. 3. Environmental Medicine National Study Group on the linoleum industry,[link widoczny dla zalogowanych], research occupational cancer epidemic report on the work done very carefully.'s specific recommendations, it is worth pondering proposed addition at the national occupational disease name, should felt (waterproof membrane) factory workers are suffering from felting Occupational lung cancer as a recommendation of the competent department of petroleum asphalt felt smoke in the work environment highest allowable concentration and health standards. recommendations to improve production processes and equipment to strengthen the asphalt smoke and dust treatment. and to enhance the operating environment, regular monitoring and supervision ; to strengthen the operation of the health of workers, it was discovered the patient should be transferred out of work early, early treatment. During the meeting also discussed the 1995 to 1996,[link widoczny dla zalogowanych], the Commission's work safety and environmental professional baseball, and adjustment and the addition of members and community members matters. made Environmental Protection Committee of the third book published in Proceedings. by the Secretary of the group is responsible for this work.
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