The way to prevent the spread of fire in peatlands

 

The method relates to forestry and can be applied to prevent the spread of fire in peatlands. This method of preventing the spread of fire in peatlands can improve the efficiency of wetting peat crumb and reduce the amount of mineral soil for the formation of the veil. The way to prevent the spread of fire in peatlands device includes a vertical curtain. The curtain is formed in the form of a hollow slit, padded across the prevailing slope, and in its upper part perform trench, which is filled with filter from water-resistant non-combustible material. Extracted from the trench and cracks the ground occiput in the form of a roller below the cracks on the slope. 1 Il.

The present invention relates to the field of forestry and can be used when fighting fires on peatlands.

Known way to prevent the spread of fire in peatlands, including vertical screens of non-combustible material at the depth of the peat. (Guidance for the development of the section “environmental Protection” as part of the project of land reclamation. - M., 1981, including infrastructure, USSR, S. 11.)

This method involves the development of a career with miserunt the entire depth of the peat layer.

The disadvantage of this method is the necessity of importation of large amounts of mineral soil for the formation of the veil.

The closest analogue of the proposed method is a method of preventing the spread of fire in peatlands, including the implementation of the veil in the form of a trench filled with peat crumbs, moistened with water (U.S. Pat. Of the Russian Federation No. 219044 AND 62 WITH 3/02, BI No. 28, 2002). This method involves performing the trench by milling peat to a depth of its occurrence and the simultaneous spraying loosened peat crumb water before returning it into the trench. This method allows you to create a veil of soft peat with a moisture content slightly above the humidity of the surrounding peatland.

The disadvantage of this method is low efficiency due to the inability significant wetting peat crumb with intermittent spraying it at the time of development of the trench.

To eliminate the mentioned disadvantages allows the proposed method to prevent the spread of fire in peatlands, including vertical curtain, according to the invention veil shape in the form of a hollow slit, padded across the prevailing slope and at the top of the hour from the trench and cracks the ground occiput in the form of a roller below the cracks on the slope.

Vertical curtain in the form of a hollow slit, across the prevailing slope, and filling the upper part of the filter from a non-flammable water-resistant material filling the roller from the extracted soil below the cracks on the slope allows you to delay the winter-spring precipitation and expense to form a curtain of peat-rich moisture to the entire depth of the peat. When this filter landfilling provides a capillary gap current and prevents the expenditure of accumulated moisture to evaporation.

The essence of the proposal is illustrated in the drawing, which shows a diagram of the vertical curtain in the section.

In the discontinuous lane 1 perform hollow slit 2, the top of which tear the trench 3 with a width of 0.4-0.6 m and a depth of 0.15-0.20 m with the dumping of the roller 4. Trench 3 is filled with the filter 5 from non-flammable water-resistant material, for example expanded clay.

Implementation of the proposed method of preventing fire in peatlands is carried out in the following order. Frangible strip 1 are laid in autumn across the prevailing slope. As a tool for laying gaps, it is desirable to use bar saleres, the advantage of which is the cutting of roots. After the laying of the slit 2 on it, transport the areas with the forming roller 4. After excerpts trench fill non-flammable water-resistant material to form the filter 5.

In the spring when snow is melting and the formation of surface runoff water flows in the direction of the prevailing bias. The platen 4 prevents further flow of water along the slope. The water seeps through the filter 5, fills the gap 2, due to the presence of a gap absorption of the peat starts from the bottom up where the most desiccated layers of peat, as its saturation with moisture, the rate of absorption decreases and the level of the slit 2 is gradually increased. Thus for the summer period is formed in the area of hydration 6, widening at the bottom. The presence of the trench 3 with a width of 0.4-0.6 m and a depth of 0.15-0.20 m, filled with filter 5 from water-resistant non-combustible material with a size of 5-20 mm, breaks capillaries after the termination of the spring flood and therefore dramatically reduces the evaporation of moisture stored in zone 6. The width of the trench 3 depends on the depth of gaps 2: the deeper the crack, the smaller the width of the trench. In case of fire on peat combustion front gradually approaching damp areas b & e due to the high moisture content of the peat in this area is the process of burning fades out. With most water-holding capacity of peat in the presence of opasnogo period, even in the absence of significant precipitation.

Thus, the proposed method of preventing the spread of fire in peatlands allows you to create a strong vertical curtain, preventing spread of fire, while significantly reducing cost of non-combustible material and the use of natural moisture generated during snowmelt.

Claims

The way to prevent the spread of fire in peatlands, including vertical curtain, wherein the curtain is formed in the form of a hollow slit, padded across the prevailing slope, and in its upper part perform trench, which is filled with filter from water-resistant non-combustible material, when removed from the trench and cracks the ground occiput in the form of a roller below the cracks on the slope.

 

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