SU1645526A1 - Method of preparing placer deposits to mining - Google Patents

Description

(21) 4691037/03

(22) 05/19/89

(46) 04.30.91. Bul № 16 (75) V.S. Tayursky, A.D. Patrin and V.A. Malov

(53) 622.271 (088.8)

(56) Peshkov V.G. Development of placer deposits. M .: Nedra, 1985, p. 189-190.

Ibid. With. 175-179.

(54) METHOD FOR PREPARING DRAINS FOR DEVELOPMENT

(57) The invention relates to an industrial hill and is intended for mining of perennial frozen alluvial deposits of considerable size. The goal is to increase the intensification of the development of arrays of considerable width

rashes by accelerating the thawing and draining of rocks and reducing the cost of preparation. Peripheral drainage ditches are made at long-term permafrost alluvial deposits and form a channel-directing dam. Over the entire width of the placer, an excavation drive with laying of rocks from the excavation into the channel-guiding dam passes. Fill the groove with water. The placer is opened by sinking a transport trench across the placer. From it along the placer, central and peripheral trenches are conducted and drainage is carried out on them. At the onset of a period of negative tp filling of the excavation with water is stopped.

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The invention relates to the mining industry and can be used in the mining of perennial frozen alluvial deposits of considerable size.

 The purpose of the invention is to increase the intensification of the development of large-sized arrays of frozen alluvial deposits by accelerating the thawing and drying of the rocks and reducing the cost of preparation.

The method is carried out as follows.

In the field of perennial frozen alluvial deposits of great extent, the riverbed and upland ditches pass outside its limits. Produced cleaning plant-silt deposits.

Over the entire width of the placer, a storage excavation passes, which is filled with water during the warm season. The water level in the recess is regulated by means of a water plant ditch. The water from the storage cavity due to the generated filtration flow serves as a source of thermal energy and coolant for the thawing process of frozen placer rocks.

The rock from the excavation of the accumulator-accumulator is placed in the channel of the dike, located on the side of the river flow. After filling the excavation with water, the capital and transport route across the capital is opened.

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Then, simultaneous peripheral drainage ditches are made, the penetration of the central and two periphery of the channel-laying dam, penetrating split trenches along the growth path of the capital and central rashes is made. At the same time, central, peripheral trenches, distinctive split and transport trance, so as to increase the intensity of the neck are used to create a natural continuation of the development of powerful permafrost filtration flow from the excavation-on-placer by combining the processes of the smoker, intensifying the grounding and drainage of rocks at low natural flows and flooded preparation costs throughout the entire tapik areas. Intensification of the process-width of the placer is carried out by excavation, defrosting and draining of rocks, creates a rocker with rock laying from penetration with due to the difference in level marks in the first excavation, looking for a dam, backs in the excavation and the bottom of the mining-preparation-fill with water, open excavation workings, 15 saping of a transport trench

Claims (1)

The depth of the mining preparatory site across the placer and from it along the processing is conducted evenly from the front of the rash and the central and periphery boundaries of the thawed and frozen zones are conducted. Serious split trenches, in which the drainage of the placer is received by the arrival of a period of negative, when the temperature is filled with a watering time of 20 hours, the negative temperature stops, and the filling of the excavation is stopped with water. The method of preparation of placers for development, including