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(31) The structure and working principle of the integrated monitoring system of opencast mining slopes deformation has been introduced. A monitoring example has been given.

(32) In 1962, due to the burning of garbage each week, an opencast coal mine accidentally ignited.

(33) Dwells on the problem how to resist and drain water in Hongqi opencast coal mine.

(34) The high and cliffy is the result of opencast working. A lot of mine can not be opencast worked any more after many years mining, and the safety of the mining becomes a important problem.

(34) Wish you can benefit from sentencedict.com and make progress everyday!

(35) Opencast mining has made severe even fatal damages to the mines from its terrains, physiognomy to its soil, rock, and from its ecology scales to its landscape scales.

(36) This paper introduces all methods for estimation of fragment size distribution after blasting in opencast mining, new methods and their developing trend at abroad.

(37) The information refers to slopes in opencast mines, quarries, dam foundation excavations and highway outs.

(38) This paper analyses the present criteria of the truck dispatch system in opencast mining , and proposes optimal control criteria on the basis of the optimal theory, describes their accomplishment .

(39) The electric railway opencast mine is simplified to a even distribution parameter mode in this paper. By this mode, the distribution and main influencing factors of DC leak current are analyzed.

(40) It is necessary that stripping plan be timely provided during the opencast mining.

(41) After the dissertation of this paper, wish it can offer a reference to opencast working.