Xishimen iron ore tailings study of flood control flood protection measures
4 Conclusion test the safety of tailings dam stability is related to the processing plant and the reservoir area downstream of the normal production of an important part of life and property, and the water is an important factor affecting the safety of the dam, especially during the rainy season the dam safety directly Wei ribs must be a high degree of re-regulation, to take effective measures. Xishimen iron ore tailing dam crossing well after the flood measures, through more than a year of research and field testing analysis and calculation, using the temporary flood protection measures and the permanent flood protection measures are correct, (the first turn 3l page) Total No. 225 metal mines in 1995, No. 3 Table 3 eight kinds of rock matrix gluttonous seven indicators related to climb climb climb climb Chang degree 1.0o. 56lo. 58Zo. 9230.95o. 93so. 92B anti-Lu 0.5611.00.7350.5310.5Z30.4850516 split statue degrees. . 5820.7351. 0.6380.6270.3550.4735l0 (iv) l-0089. . 832. . 828 anti-mold. . 950.5230.6270.8g1.00.8. 20l864 axial tension. Expansion mosquitoes strength 0.93804850.3550.8320.8921.00963j Nang rupture strength 0.9280.5160.4 tensile strength (R,) and the rock fracture toughness (E), the rock tensile modulus of elasticity (E), rock blasting crack propagation velocity (V) is tightly related. The chop intensity (R) and rock fracture toughness (K), the rock tensile modulus of elasticity (E), axial tensile strength of rock (R) no correlation, and only the highest rock compressive strength of the correlation coefficient ( r = 0.735), but also from the critical value (y .... a 0.834) far which further proved that the axial tensile strength test method of reliability and rock chop the unreliability of testing methods, the latter who does not reflect the character of rocks in tension. 5 Conclusion xY a 2F hydraulic rock drill sampling machine of 50ram × 150ram cylindrical specimen with axial tensile sx-1-type holding device is small rock laboratory measurement of rock tensile strength and tensile modulus of elasticity of holding device with advanced methods large margin, the specimen can produce a large translation and rotation, can easily adjust the specimen processing bias and the bias. Traditional chop test, the test results on the hard rock is low, the high soft rock test results, and error, is not appropriate to continue to use. In view of this, proposed to amend the (Received 1994l030) (on the next page 24) the statistical value as the white information,
######## oakley sunglasses, and deleting some of the more 1 The amount of historical data stripping shovel, shovel the formation of new spin-off series the amount of raw data, re-established GM ( 1,1) 1 ice-cold pre-gray model, by means of computer to predict its future status, can be realized on the amount of gray shovel stripping dynamic prediction. Mine production of scientific and effective control and management of three instances of the application that conclusion, using the established GM (1,1) model in the case of small sample size, higher accuracy of forecasts. Thereby stripping the preparation for the mine plan, production plan, to provide a reliable assessment of the efficiency of power shovel basis. Through the above analysis has further shown that application of gray theory of stripping shovel forecast of GM (1,1) model is feasible,
true religion outlet, to achieve mine production and management to provide a modern and effective ways and means. (Received 19,941,
Oakley sunglasses sale,220) (on page 46) valid. To resist the flood of 1993,
GHD Glätteisen günstig, several heavy rainfall, dam safety and stability, there was no danger and run tail sand leakage phenomenon. Especially the artificial change in April 1994 cyclone dam law alternating emission and dispersion tube joint dam new technology, not only greatly reduce the labor intensity, 1O0 long beach slope to 1.33, far greater than the flood routing beach slope. In addition, as the dam rises, the storage capacity of the tailings is increasing, a fundamental solution to the wells after the tailing dam crossing flood problems. And tailings in the study of flood protection measures, clearing the exit of the drainage culvert Si silt 40m long, to ensure the exit of the drainage flow. First half of 1994 the whole dam has to calm down outer slope of grass land, the construction of a criss-cross gutter, drainage system can be set up that the dam is safe and stable in the flood season each year no longer have to spend a lot of power, material and financial resources to flood,
mulberry outlet, nor will the downstream reservoir pose a threat to lives and property. Thus, with obvious economic and social benefits. (Received Date 19941127)
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