The defeated coal of long-distance pipe is at the laying method of debris flow cheuch section
Technical field
The present invention relates to a kind of pipe laying method, be specifically related to the defeated coal of long-distance pipe at the laying method of debris flow cheuch section.
Background technique
This class special geographical environment all adopts the suspension cable system to tradition in the debris flow district, the suspension cable system is stressed mainly to be born by main rope, the stressed maximum of main rope, main rope must have the anchoring pier in the two sides in debris flow district, and the anchoring pier will build on the lithology geologic structure, can not be based upon on the decomposed rock geologic structure.Amount of deflection is offset down in the bridge floor arch camber that must make progress in main rope middle part.The amount of deflection of suspension cable system can exert an influence to pipe safety operation, and outside goes out, vibrates, and blows etc. to cause that all the suspension cable system trembles and vibrate, and this all can influence the safe operation of pipeline system.Ore slurry pipeline is two-phase fluid (solid and liquid), and fluid ratio is great, the pressure height, and flow velocity is fast, and slurry has the momentum conversion.Require external impact little to pipeline system, vibrate little, pipe laying will be laid by the hydraulic gradient of strict regulations, generally all be to adopt buried-pipe laying, the degree of depth is at 0.8 ~ 1.2m, local location can reach 2.0m, and this buried-pipe laying adopts the degree of depth below basement rock, can avoid going out, shaking and destroying pipeline system such as agricultural production, vehicle, hunting like this.
Summary of the invention
The object of the invention provides the defeated coal of a kind of long-distance pipe at the laying method of debris flow cheuch section.
In order to overcome above-mentioned deficiency, technological scheme of the present invention is to solve like this: the defeated coal of long-distance pipe is at the laying method of debris flow cheuch section, and this method is carried out according to the following steps:
1), lay on the route at the coal slurry pipe pipe trench dug to basement rock, width is 2 times of the design pipe trench;
2), excavate pipe trench at basement rock, the degree of depth of pipe trench and width reach the requirement of pipe laying;
3), when pipe laying is good, to this location drain off floodwaters, the water conservancy diversion protection method, thereby reduce debris flow to the destruction of convey coal pipe.
Described pipe laying is stablized in the basement rock underliing, and reduces the destruction of debris flow mud-stone flow disaster in season to the coal convey pipe line with this.
Described pipe laying must meet design requirement.
The present invention has compared with prior art improved the ability of pipeline adaptation to the ground, has avoided crossing over the potential safety hazard of the later stage operation that brings, and reduces investment outlay, and reduces difficulty of construction, guarantees operation security.
Embodiment
Embodiment given below further specifies so that the present invention is made; but given embodiment can not be interpreted as limiting the scope of the invention, thereby nonessential improvement and adjustment that the professional and technical personnel has done according to content and the design philosophy of foregoing invention also belong to protection scope of the present invention.
Embodiment 1
Lay on the route at the coal slurry pipe pipe trench is dug to basement rock, width is 2 times of the design pipe trench.
Embodiment 2
Excavate pipe trench at basement rock, the degree of depth of pipe trench and width reach the requirement of pipe laying.
Embodiment 3
When pipe laying is good, to this location drain off floodwaters, the water conservancy diversion protection method, thereby reduce debris flow to the destruction of convey coal pipe.