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Improve the accuracy of the method acceptance Mine Surveying


According to the formation of ore characteristics and mining of bauxite production scale, stripping the amount of acceptance of all fixed-profile method used to calculate graphic. Measure profile to use more planimeter method, the use of a certain range (400em2 ~ 5cm2), the smaller the range of today's smaller ore body thickness profile, smaller-scale topographic greater amount of human error count. However, using the coordinate method will solve the above problem areas, as calculated from coordinate scale, human impact rolling. Area is calculated as P = 1/2E (Xi-1 a xi +1) Yi = 1/2EXi (Yi +1 a Yj a), calculated conducive to the computer programming,[link widoczny dla zalogowanych], easy to use, high precision, just draw simple profile Figure, easy file management. Process with the C programming language, shown in Figure 1. (3) diversification of the volume formula, the refinement of dynamic management. 1:500 stripping acceptance plan, and monthly, quarterly measurements for acceptance. Acceptance scale and profile from the profile: Mining 1:200,1:100, d: 5m; stripping 1:500,1:200,[link widoczny dla zalogowanych], d = 10m. Volume formula V: [(pl + pn) / 2 + p2 + ... + pn a 1] × d. Advantage of this approach: from the method with a fixed section fixed roof and floor, to maintain the true form of ore. The disadvantage is: When the test area is small, too small or a few adjacent section profile changes are not similar, there will be a fixed sections from the large deviations. Open the input file p. cl. l calculation s = (x. A x +2) ・ Y-. - / 2; P = P + sll-turn flow chart in Figure 1 Save and exit the amount of calculation to ensure the accuracy of the volume, support spacing should be close as possible to some, in order to reduce the distance between two adjacent lines as the cause of the error curve . That appropriate adjustments to the dynamic range long-distance management section, in the calculation of the slope shall be substantially the same segment, such as p1 ... pn cross section for the segment, d1. ・ ・ Ch1 for the distance, V = 2Vi = Σ (pi + pi +1) / 2 × di. And P = [(pl + pn) / 2 + p2 + ... + pn a 1] × d where d is fixed only special circumstances such as distance, the actual due back stope ore or ore heap uncertainty, there is always convex and concave white saddle-shaped topography, slope tumor-like topography, should be broken down in the calculation of this calculation: ① When the approximate form of two adjacent sections, and the relative area of less than 40%, the method can be used in parallel trapezoidal cross-section formula: Vi: 1 / 2 (pi + pi +1) di. ② When the approximate form of two adjacent sections, and the relative area of less than 40% can be used to cut flat cone-shaped section method formula: Vi = 1 / 2 (pi + Pi +1 +,[link widoczny dla zalogowanych], / piP +1) di . ③ When the stope is only part of the terrain along the edge of the upper and lower sections about control, according to the shape of the features of the other end, was wedge used: V: 1/2p * d; tapered by: V = 1/3p * d or using estimates Read the formula: V = P * d (where d are read from top to bottom along the center line to estimate the distance profile,[link widoczny dla zalogowanych], generally by 1 / 2, 1 / 3 or 2 / 3 and other times the profile taken from the d to.) ④ cylinder using the formula proposed V: 1 / 6 * (pl + p2 + pm) d (pm for the central section.) (Continued on page 31) 4 Wang Xudong, etc.: mining vehicle transmission design optimization of Figure 6, multi-gear transmission optimization process diagram Seoul mouth 尔泰尔尔尔 good bad good cloth Song mediocre Mao out of power (on the continued on page 37) this will be the specific utilization of these formulas, it is to adapt to the mine mining practice, should play the role of measurement, may seem complicated, but improved by a simple column of the calculation accuracy of measurement and acceptance severely affected, can partial encryption method used to adjust the profile, thus improving accuracy. 3 Conclusion Although the measurement of mine production and acceptance of many factors, such as mine when the ore heap down the roof and floor of the changes, loss of lean ore mining, transport phenomenon, the proportion of ore compaction adjustment and so can not be ignored. But this article from the staff survey work, detailed in the original basis through the use of advanced computational methods, comprehensive use of various calculation methods and improve the inspection accuracy, and ensure the quality and acceptance, with some advanced technology and scientific, so as to effectively guide mining. With the growing development of modern science and technology,[link widoczny dla zalogowanych], the new measurements and mapping tools for applications such as close-range digital mapping projective measurement and mine surveying and mapping instrument will bring a bright future. Mine stripping close-range projection for greater acceptance of the superiority of foreign trade data collection on the one hand it is more authenticity and comprehensiveness, to the establishment of approximate mathematical adjustment model approximation to obtain the true value many times; the other hand, improve the calculation accuracy and efficiency. Mouth
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