The way of doing excavation and reclamation works for the construction of pipelines on the construction strip with vegetation

 

(57) Abstract:

The invention relates to conducting excavation and reculturing works and can be used in the construction and repair of pipelines in the Far North. On the construction strip on both sides from the design axis of the object construct a protective coating, for example, from snow and ice, the two panels. Between the panels of the protective coating build a trench. Why develop mineral soil, crushed it to fractions of no more than 5 cm Soil placed in a pile on the surface of the coating. With the surface coating of the trench is placed a pipe, Ballesteros him fall asleep fine soil. Revegetation is carried out in the winter by depositing on the surface of the roller above the pipeline seed. The latter is in the form of a biologically active pellet, containing the seeds of the Northern species of grasses, fertilizers and supplements. 3 C.p. f-crystals, 3 ill.

The invention relates to excavation and movement of soil, more precise ways of doing excavation and reclamation works, and can be used in the construction and repair of pipelines in the Far North.

The known method of recol the sowing of grasses, in which, after each of the above operations put a layer of dolomite lime waste a certain thickness [1] a Known method is tedious and complicated, making it ineffective in the construction of pipelines in permafrost conditions.

A known way of doing excavation and reclamation works, including the development of the trench at a construction band with vegetation, dredging and placement of mineral soil in the pile for temporary storage, installation and laying of the pipeline, backfill the trench with the laid pipeline soil with the formation of the roller, the layer-by-layer seal it and revegetation [2] Described a way of doing excavation reduces their complexity, qualitatively, a reclamation of the lands of the Middle band, where the surface layer reaches 0.4-0.5 m and construction work performed at any time of the year. However, in the Far North, where the layer thickness of not more than 0.06 to 0.1 m, and construction is underway in the winter time after soil freezing, the known method is ineffective.

The purpose of the invention increase the efficiency of the reclamation works in the Far North by reducing the volume technogenia.

The aim is achieved in that in the method of conducting excavation and reclamation works for the construction of pipelines in the Far North on a construction band with vegetation, including development of trenches, stacking the excavated mineral soil in the pile, installation and laying of the pipeline, backfill the trench with piping mineral soil to form roller and revegetation, according to the invention, after freezing Stonetalon soil layer and reaches the carrying capacity of not less than 0.12 MPa at the construction strip on both sides from the design axis of the trench construct a protective coating of two lanes, between which develop a trench with vertical walls, by breaking up the soil to fine fractions that fall asleep a trench with tubing, with mounting, pipeline laying and backfilling of the trench leading from the surface of the protective cover, and revegetation accomplished by depositing a seed material on the roller surface of the ground prior to its seasonal thawing.

The objective is achieved by the fact that the protective cover is made of snow and ice;

the fact that the seed material is made in the form of the biologically aktivnih insufficiently regenerated vegetation provide additional introduction of inoculum.

In Fig. 1-3 schematically shows the implementation of the proposed method to pipe laying and after its installation.

The method is as follows. Begin excavation and reclamation works in the Far North after complete freezing Stonetalon soil layer and reaches the carrying capacity of not less than 0.12 MPa, which ensures the safe movement of construction vehicles on the surface of the construction strip. Divert construction strip and on both sides of the project from the axis of the object construct protective cover 1, for example, from snow and ice. The protective coating 1 constructed in the form of two parallel strips separated by a distance corresponding to the width of the object. Between the bands of the protective cover 1 develop below the mineral soil 2 rotary excavators, for example, a differentiated way: first, develop a narrow pioneer trench (not shown), which then extend parallel passages rotary excavator. The result is a trench 3 with vertical walls, which reduces its width and the amount of anthropogenic disturbances of the vegetative cover 4, and mineral soil 2 consists of fine particles with sizes up to 5 cm

The surface of the roller 7, seeded material, may be coated with a layer 8 of snow for protection from wind and frost. In the spring and summer ice cover 1 and mineral soil 2 thawed. Mineral soil 2, which contains a large amount of ice deposited and the platen above the trench almost compares to total relief. After germination of seeds land reclamation works examine, for example, from a helicopter, over the entire length of the pipeline 6 and, if necessary, in areas with neustanovivshiesya vegetation 4, additionally make a seed.

The proposed method is prospectively recovery of the surface layer by reducing the amount of disturbed ground, restorative material, to speed up the recovery time, and increase the reliability of the pipeline by reducing thermoerosion.

1. The WAY of DOING EXCAVATION AND RECLAMATION WORKS for the CONSTRUCTION of PIPELINES ON the CONSTRUCTION STRIP WITH VEGETATION, including development of trenches, stacking the excavated mineral soil in the pile, installation and laying of the pipeline trench, filling the trench with piping mineral soil to form roller and revegetation, characterized in that in the far North before trench excavation after seasonal freezing-thawing of the soil and reaches the carrying capacity of not less than 0.12 MPa at the construction strip on both sides from the design axis of the trench along it build protective coating of two bands, the trench develop with vertical walls, crushing of excavated soil to fractions, not larger than 5 cm, which poured trench with tubing, with mounting, pipeline laying and backfilling of the trench leading from the surface of the protective cover, and revegetation accomplished by depositing a seed material on the roller surface of the ground prior to its seasonal Taiwanese under item 1, characterized in that the quality of seeds used biologically active granules containing seeds Northern species of grasses, fertilizers and food additives.

4. The method according to p. 1, characterized in that in areas with insufficient recovery of vegetation provide additional introduction of inoculum.

 

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FIELD: construction.

SUBSTANCE: trench-burying device comprises a frame, a displacement mechanism, two dump scrapers and an accessory for displacement of dump scrapers. Dump scrapers are arranged symmetrically to the longitudinal axis of the frame symmetry, are hingedly connected to the frame and are installed as capable of rotation in the horizontal plane. The trench-burying device comprises an accessory for monitoring a displacement course and a guide block. The guide block is arranged with a connection element and with a working surface for interaction with the external surface of the installed pipeline. One end of the connection element is kinematically connected with the guide block. The connection element with the other end is connected to the frame by means of the hinged joint, which is arranged on the longitudinal axis of the frame symmetry. The accessory to monitor the displacement course is kinematically connected with the guide block.

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3 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: pipeline is mounted on a deck of a pipe laying ship and laid at the water reservoir bottom. A column of two machines moves along the pipeline: a pipe burying barge and a trench burying machine at some distance from each other, which is technologically substantiated, but not more than 100 metres. The pipe burying barge excavates a trench immediately under the pipeline and lays the developed ground into accurately shaped dumps on both sides; the pipeline is lowered into the trench under action of dead weight. The trench burying machine displaces the formed dumps into the trench and covers the laid pipeline with the ground earlier extracted from under it. Machines operate in an automatic mode, remotely controlled and provided with energy along cables hung on floats from an underwater or surface basic ship. The pipe burying barge is made in the form of two working elements of a back-acting shovel, which are mirror-like located relative to each other and each of which has the possibility of being turned in a horizontal plane and laterally inclined by means of horizontal and inclined hinges. Reactive forces of the working elements are closed on a common frame and not transmitted to a travelling gear.

EFFECT: improving efficiency and reducing costs at performance of works.

12 cl, 11 dwg

FIELD: construction.

SUBSTANCE: construction method of adits containing a water-receiving element in the form of a solid unit of n number (n>2) of vertical longitudinal toe filters involves trench excavation by means of an excavating and drainage machine, laying into it of a drain pipe covered with protective filter material, and refilling of the trench by means of a padding device moving synchronously with the drainage machine and provided with a bunker for filter material with a drain chute. Laying of the drain pipe covered with protective filter material and refilling of the trench is performed simultaneously. The drain pipe covered with protective filter material is padded throughout the trench width to the depth of 15 cm above its crown from a duct to which filter material is supplied from the bunker via the drain chute. The duct represents a rectangular parallelepiped having width equal to trench width, and height that is somewhat bigger than trench depth. Duct bottom is located near the trench bottom at the distance of padding layer thickness of the drain pipe relative to the trench bottom. The duct is rigidly attached with front wall 7 to housing 8 of the excavating and drainage machine. On rear 9 wall of the duct there installed on the outer side are (n-1) vertical partition walls 10 parallel to each other and to walls 1 of the trench with a possibility of changing the distance between them according to thickness of the filters. Height of each of partition walls 10 is equal to the duct height. The filter material bunker is divided into sections by means of partition walls with a possibility of changing the distance between them and their number so that the number of bunker sections is more by one than the number of vertical longitudinal toe filters of the adit. Each bunker section is provided with its own drain chute, from which each adjacent vertical longitudinal filter is filled with heterogeneous filter material.

EFFECT: providing a possibility of filter refilling of the trench of the adit; improving hydrological action of adits and ecological and economic efficiency of draining of low-water-permeable middle and heavy loamy and clay soils.

4 cl, 2 dwg

FIELD: construction, applicable for trenchless laying and replacement of underground pipe-lines.

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EFFECT: provided automatic cyclic action of the pneumatic percussion mechanism.

3 cl, 3 dwg

FIELD: construction engineering; erection of pipe lines in thawing permafrost soils and in flooded areas.

SUBSTANCE: proposed method includes ditching at trench with widened areas located at definite distances and pipe line is laid on bottom of trench. Pipe line is covered with flexible rugs and bottom of trench at widened areas is also covered with rugs; edges of rugs are fastened in widened areas and trench is filled. Used as anchor member are cylindrical textile containers placed in lugs of flexible rugs in parallel with pipe line and filled with soil. Prior to fastening the edge sections of flexible rugs, each of them is tightened at fixation of tension; preliminary tension of edge sections is effected during filling the widened areas and trench soil ensuring contact of flexible rugs with bottom of widened areas and trench. Filling the widened areas and trench is performed in direction towards pipe line, symmetrically relative to it.

EFFECT: enhanced reliability of attachment of pipe line at 0required marks.

13 cl, 4 dwg

FIELD: construction engineering; erection of pipe lines in permafrost soils at alternating terrain.

SUBSTANCE: trench in smooth terrain and in sections cut by hydrographic net is dug in active layer at depth sufficient for location of upper generatrix of pipe line above level of daily level. Prior to laying the pipe line, bottom walls and berms of trench are lined with cloth of non-woven synthetic material. backfill soil is placed in ballasting polymer panel-type devices or in ballasting polymer container-type units suspended from pipe line. Anti-erosion partitions made from non-woven synthetic material are formed in sloping sections together with funnel whose neck is located downward of water flow embracing the pipe line at specified clearance between neck and pipe line. Funnel is formed by covering the natural slope of backfill soil by free lower edge of non-woven synthetic material with ballasting polymer panel-type or ballasting polymer container-type devices placed on lower portion of funnel followed by subsequent removal of embankment protecting the pipe line. As far as sections of route cut by hydrographic network are concerned, anti-erosion partitions are formed in trench at transients with opposite slopes of microterrain; anti-erosion partitions are made from anti-erosion cloths and backfill soil is placed n soil-filled weighting materials attached to pipe line. At low points where opposite sections cross, water pass or water bypass structure is formed in trench.

EFFECT: enhanced reliability; reduced scope of earth-moving work; enhanced stability of pipe line in horizontal plane.

9 cl, 8 dwg

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EFFECT: reduction of tractive force.

5 dwg

FIELD: construction engineering; erection of underground pipe lines in permafrost soils, in bogs and in flooded and marshy areas.

SUBSTANCE: proposed polymer container ballasting unit has two distance rigidity frames located on both sides from pipe line, reservoirs made from polymer commercial cloth and filled soil which are secured to said frames, anti-erosion partitions and upper and lower weighting belts. Distance rigidity frames are curvilinear in form and their height exceeds diameter of pipe line being ballasted. Bend of each frame is made at obtuse angle and lower part of each frame is inclined towards pipe line relative to trench bottom. Polymer commercial cloth laid along pipe line makes distance frame rest against ground of trench bottom both in filling the reservoirs with soil and at action of pushing-out load.

EFFECT: extended functional capabilities.

3 cl, 1 dwg

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