Method of peat extraction

 

The invention relates to the extraction of peat mainly for agricultural purposes in the areas of sustainable freezing peat deposits. The invention consists in that after the transition of air temperature through 0oWith by sluicing raise the groundwater level to the middle layer of cryogenic texture after thawing lower the groundwater level to design value and produce the further development of deposits by tilling to a depth of not less than 3 cm, simultaneous with loosening raking, and each subsequent roll forming offset by the width of the base of the previous roll, cleaning peat and the formation of piles. The invention provides an increase in seasonal peat extraction. 1 Il., table 1.

The invention relates to the field of peat extraction mainly for agricultural purposes in the areas of sustainable freezing peat deposits.

There is a method of peat extraction with separate cleaning of stackable (consolidated) rolls /1/, including milling, tedding, raking peat in consistently increasing in several technological cycles roller, cleaning peat from the rolls, t outside Tortola. In this way the main technological factors that determine the possibility of starting the season peat extraction are the transition of air temperature over +10oWith and thawing deposits to a depth of not less than 30 cm /2/.

The disadvantages of this method are the following: in areas with strong seasonal freezing peat deposits, defrost deposits to a depth of 30 cm occurs much later transition of daily average air temperatures over +10oC. During this period unnecessarily consumes a large amount of solar energy.

The presence of the frozen layer and slow it defrost in the fields of peat extraction delays the drying fields, complicates the patency of technology, dramatically reduces the efficiency of drying peat. Depending on the capacity of the frozen layer and the quality of ice in it seasonal fees are reduced on average 12-15%.

Closest to the claimed method is a method of peat extraction /3/, including development of deposits by loosening after the transition of air temperature through 0oWith and thawing peat deposits of not less than 3 cm, cleaning and shaping of the stacks, the wet spreading peat crumb simultaneously loosening gather in the incremental rolls, and Ubort the flax forming rolls, forming each successive swath offset by the width of the base of the previous swath until complete thawing deposits.

The disadvantages of the method are the availability of cryogenic layer of texture to the transition of air temperature in 10oAnd slowly his thawing from the bottom, which limits the possibilities of the method, does not allow full use of positive air temperatures. After the transition to daily temperatures 0oWith the thawing peat deposits lost the sum of effective temperatures over 200oC.

The invention aims at eliminating the above drawbacks and is that the way, including the development of deposits of peat soil loosening to a depth of not less than 3 cm, simultaneous with loosening raking, and each subsequent roll form with a mixture of the width of the base of the previous roll, cleaning peat and the formation of piles after the transition of air temperature through 0oC. According to the claimed invention by sluicing raise the groundwater level to the middle layer of cryogenic textures and after thawing open gateways, lower the groundwater level to design value and produce further R air temperatures of 0oTo raise the groundwater level to the middle layer of cryogenic textures by sluicing, which provides faster thawing deposits for 10-12 days and allows to involve in the process the sum of the effective positive temperature 100-110o(See the drawing) that, in turn, will increase the volume of seasonal peat extraction (see table).

The sluicing operation will not result in large economic costs, because it can be produced, using for this purpose gateways fire extinguishing systems, or in case of its absence (for example, on cortometraggi S50 ha), when for the purposes of fire-fighting water is taken from a special fire fighting reservoirs, is arranged on the drainage network gateway controller.

Raising the groundwater level from the bottom to the middle layer of cryogenic texture, it is advisable that the main defrost is on top under the influence of positive mean daily air temperatures and in the case of the cryogenic layer texture of the thawed patches, ensures that groundwater in the peat extraction layer.

Method of peat extraction in areas with strong freezing peat deposits is as follows: season of peat extraction start PA 3 cm of the conditions for effective operation of equipment and optimal seasonal fees.

First, by sluicing raise the groundwater level to the middle layer of cryogenic textures, then the peat thickness loosened to a depth of thawing 3 see the Obtained wet spreading peat crumb without drying my stackable rolls, roll capacity is 6-8 days. Harvesting peat from the rolls, the transportation of the harvested peat and unloading of produce in parallel with the forming rolls, a new swath shape shifting relative to the base width of the roll. The latter is necessary for uniform thawing deposits.

Thawing peat ends at the moment of transfer of air temperature in 4oWith, in addition involved in the technological process is the sum of effective temperatures of 100-110oWith 6-8% of the season, which is 15-20% can increase seasonal fees.

After thawing peat deposits open the gateways and the groundwater level is reduced to the design size. Moreover, after the transition of air temperature in 10oWith the spreading of peat crumb clean stackable rolls after reaching the standard humidity.

The inventive method of peat extraction in comparison with the known technologist and 1. Technological scheme and a set of equipment for the production of milled peat, with separate housekeeping of a series (consolidated) rolls. VNIITF, 1987, 80 S.

2. Antonov, C. J., Kopenkin C. D. Technology and complex mechanization of peat production. M: "Nedra", 1983, 286 S.

3. RF patent 1789026, CL E 21 49/00, B. I. 2 - 93,

Claims

Method of peat extraction, including development of deposits by tilling to a depth of not less than 3 cm, simultaneous with loosening raking, and each subsequent roll forming offset by the width of the base of the previous roll, cleaning and shaping of the stacks, characterized in that after the transition of air temperature throughoWith by sluicing raise the groundwater level to the middle layer of cryogenic texture after thawing open gateways and lower the groundwater level to design value and produce the further development of deposits.

 

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