CN103322297A

CN103322297A - Method for laying coal transporting pipeline and communication optical cable in same ditch across road through heavy excavation

Info

Publication number: CN103322297A
Application number: CN2013101765082A
Authority: CN
Inventors: 苏华; 张亚利; 刘睿; 刘姣; 刘红梅
Original assignee: Wuhan Design and Research Institute of China Coal Technology and Engineering Group
Current assignee: Wuhan Design and Research Institute of China Coal Technology and Engineering Group
Priority date: 2013-05-14
Filing date: 2013-05-14
Publication date: 2013-09-25

Abstract

The invention discloses a method for laying a coal transporting pipeline and a communication optical cable the same ditch across a road through heavy excavation. In a design for the long distance coal transporting pipeline and a communication line, generally, the communication optical cable is laid across roads under the second level through the deep excavation method; during the crossing of the roads, the communication optical cable is protected by a silicon core pipe of phi 40/33; the silicon core pipe reaches to two sides of roadside ditches for 2 m respectively; the silicon core pipe is sleeved with a phi-76 hot dip galvanizing steel pipe for protection before crossing. For the roads under the second level, the deep excavation is small in financial loss and easy to repair, and is used for crossing roads.

Description

Convey coal pipe and communication optical cable are with the laying method of ditch highway crossing heavy excavation

Technical field

The invention belongs to pipeline transport communication, be specifically related to convey coal pipe and communication optical cable with the laying method of ditch highway crossing heavy excavation.

Background technique

The present invention relates to convey coal pipe communication optical cable heavy excavation and pass through the design and construction method of secondary to get down the highway.Because in this pipework, communication optical cable is with the convey coal pipe laying in one ditch, so adopt heavy excavation to have the effect of getting twice the result with half the effort, and concerning secondary getting down the highway, the economic loss of excavation is little, repairs easily, has obvious advantage so heavy excavation passes through.

Summary of the invention

The purpose of this invention is to provide a kind of easy construction, cost is low, and fireballing convey coal pipe and communication optical cable are with the laying method of ditch highway crossing heavy excavation.

Smooth enforcement in order to ensure the heavy excavation highway crossing, technological scheme of the present invention is to solve like this: a kind of convey coal pipe and communication optical cable be with the laying method of ditch highway crossing heavy excavation, and special way of the present invention is that described method carries out in the steps below:

1), when convey coal pipe and communication optical cable cross more vertical highway, adopt the heavy excavation method vertical highway to be cut to the dark dovetail groove of 1.5m～2.5m, groove depth 3m～5m, bottom land backfill 100 ㎜ of dovetail groove～120 ㎜ fine earths;

2), on the backfill fine earth, bury convey coal pipe underground, be backfilled to the convey coal pipe top with fine earth again;

3), 300 ㎜ both sides are chosen two ditches and buried silicon core pipe underground at the convey coal pipe top, silicon core tube cavity penetrates communication optical cable;

4), silicon core pipe is worn φ 76 hot galvanized steel pipe casing protections outward;

5), backfill 300 ㎜ fine earths on silicon core pipe, convey coal pipe;

6), continue to ram to fill out to dig undisturbed soil;

7), rammer is filled out and is dug asphalt or concrete or gravel recovery road surface on the undisturbed soil;

Beneficial effect of the present invention is: easy construction, and cost is low, and speed is fast, can guarantee simultaneously the operation security of highway and pipeline.

Description of drawings

Fig. 1 is for passing through below the secondary and non-standard highway sectional view;

Fig. 2 is that enlarged view is looked on the left side of Fig. 1;

Among the figure, 1 is highway; 2 is marker peg; 3 is nature ground; 4 is colored belt; 5 is communication optical cable; 6 is Φ 40/33 silicon core pipe; 7 is Φ 76 hot galvanized steel pipes; 8 is convey coal pipe; 9 for recovering the road surface; 10 dig undisturbed soil for pipe trench rams to fill out, and 11 is fine earth.

Embodiment

The present invention will be further described below in conjunction with embodiment:

With reference to Fig. 1, shown in Figure 2, a kind of convey coal pipe and communication optical cable are with the laying method of ditch highway crossing heavy excavation, and described method is carried out in the steps below:

1), when convey coal pipe 8 and communication optical cable 5 cross more vertical highway 1, adopt the heavy excavation method vertical highway 1 to be cut to the dark dovetail groove of 1.5m～2.5m, groove depth 3m～5m, bottom land backfill 100 ㎜ of dovetail groove～120 ㎜ fine earths 11;

2), on backfill fine earth 11, bury convey coal pipe 8 underground, be backfilled to convey coal pipe 8 tops with fine earth 11 again;

3), choose two ditches in 300 ㎜ both sides, convey coal pipe 8 tops and bury silicon core pipe 6 underground, silicon core pipe 6 inner chambers penetrate communication optical cable 5;

4), silicon core pipe 6 outer φ 76 hot galvanized steel pipes 7 casing protections of wearing;

5), backfill 300 ㎜ fine earths 11 on silicon core pipe 6, convey coal pipe 8;

6), continue to ram to fill out to dig undisturbed soil 10;

7), rammer is filled out and is dug asphalt or concrete or gravel recovery road surface 9 on the undisturbed soil 10;

Described silicon core protection of pipe cover stretches out at least 2m of the both sides of highway gutter outside.

Described communication optical cable buried depth should be no less than 1.2m apart from the road gully bottom of trench.

Cover has φ 76 hot galvanized steel pipe casing protections on the described silicon core pipe external diameter.

Embodiment 1

When the following standard highway heavy excavation of secondary that passes through pitch, cement, gravel paving passed through, the silicon core pipe box of φ 40/33 had φ 76 hot galvanized steel pipe casing protections.

Embodiment 2

Communication optical cable adopts the silicon core protection of pipe of a φ 40/33, and the protecting jacket of passing by on one's way stretches out each 2m of the both sides of highway gutter outside.

Embodiment 3

The communication optical cable buried depth should be no less than 1.2m apart from the road gully bottom of trench.

Embodiment 4

φ 40/33 silicon core pipe need be done tight effectively shutoff and process.

Claims

1. a convey coal pipe and communication optical cable are with the laying method of ditch highway crossing heavy excavation, and highway comprises the secondary that passes through pitch, cement, gravel paving to get down the highway, and it is characterized in that described method carries out in the steps below:

1), when convey coal pipe (8) and communication optical cable (5) cross more vertical highway (1), adopt the heavy excavation method that vertical highway (1) is cut to the dark dovetail groove of 1.5m～2.5m, groove depth 3m～5m, bottom land backfill 100 ㎜ of dovetail groove～120 ㎜ fine earths (11);

2), on backfill fine earth (11), bury convey coal pipe (8) underground, use again fine earth (11) to be backfilled to convey coal pipe (8) top;

3), choose two ditches in 300 ㎜ both sides, convey coal pipe (8) top and bury silicon core pipe (6) underground, silicon core pipe (6) inner chamber penetrates communication optical cable (5);

4), outer φ 76 hot galvanized steel pipes (7) casing protection of wearing of silicon core pipe (6);

5), at silicon core pipe (6), the upper backfill 300 ㎜ fine earths (11) of convey coal pipe (8);

6), continue to ram to fill out to dig undisturbed soil (10);

7), rammer is filled out and is dug asphalt or concrete or gravel recovery road surface (9) on the undisturbed soil (10).

2. convey coal pipe according to claim 1 and communication optical cable is characterized in that with the laying method of ditch highway crossing heavy excavation described silicon core protection of pipe cover stretches out at least 2m of the both sides of highway gutter outside.

3. convey coal pipe according to claim 1 and communication optical cable is characterized in that with the laying method of ditch highway crossing heavy excavation described communication optical cable buried depth should be no less than 1.2m apart from the road gully bottom of trench.

4. convey coal pipe according to claim 1 and communication optical cable is characterized in that with the laying method of ditch highway crossing heavy excavation cover has φ 76 hot galvanized steel pipe casing protections on the described silicon core pipe external diameter.