CN2832899Y

CN2832899Y - Energy dissipation structure for mud-rock flow]

Info

Publication number: CN2832899Y
Application number: CN 200520010277
Authority: CN
Inventors: 陈洪凯; 唐红梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-09
Filing date: 2005-11-09
Publication date: 2006-11-01
Anticipated expiration: 2015-11-09

Abstract

The utility model discloses an energy dissipation structure for mud-rock flow, which has the technical scheme that the bottom of an exhaust guide structure is built with the energy dissipation structure which is composed of a series of quasi step-shaped energy dissipation teeth, the width of the energy dissipation structure is equal to the width of the bottom of the exhaust guide structure and a connecting line of the corner edges of the energy dissipation teeth is an ideal groove base line of the exhaust guide structure. The utility model has the technical advantages that the impact and abrasive action of mud-rock flow bodies to the exhaust guide structure is weakened, the actual using age of the structure is prolonged, the flow rate of the mud-rock flow is increased, and the fast mud-rock flow exhausting and guiding functions are achieved.

Description

The mud-rock flow energy-dissipating structure

Technical field

The utility model relates to a kind of mud-rock flow Prevention Technique, especially relates to a kind of mud-rock flow energy-dissipating structure.

Background technology

Over nearly 10 years, both at home and abroad obtained considerable progress aspect preventing and treating at mud-rock flow, systematically make up the mud-rock flow interception, arranged the engineering system of leading, engineering and non-engineering system by control water source, thing source, Prevention Technique such as dregs-blocking dam, drainage groove, guiding gutter, trraning pole, aqueduct, alluvial dam, fast flow structure, mud-rock flow tunnel have successfully been developed, be used for highway, railway mud-rock flow along the line and small watershed and administer, brought into play important effect.200320115126.0, patent documentations such as 200420061906.6 record above-mentioned technology.

Load required when mud-rock flow is prevented and treated structure design is mainly the impulsive force of mud flow, and influence prevents and treats the anti-erosion performance that is mainly structure of structure useful life longevity.From the energy point of view analysis, the essence of the impulsive force of mud flow is the impact energy of mud-rock flow, and the fundamental starting point of mud-rock flow control then is to reduce or eliminate the mud-rock flow impact energy, and change the mud-rock flow impact energy transport direction or transport velocity.

At present, the impact force that accurately quantizes actual mud-rock flow or hyper-concentration flow is an international difficult problem, to such an extent as to the load of preventing and treating structure design is according to seeming not enough usually, this also is the main cause that the mud-rock flow prevention effect is not too remarkable over year surplus in the of 40, Prevention Technique is made slow progress.Therefore,, make up perfect mud-rock flow Prevention Technique system, bring into play the prevention effect of preventing and treating structure from aspects such as mud-rock flow control new construction, new material, new technologies, very urgent.

Summary of the invention

The utility model is to lead the inside that prevents and treats structure at mud-rock flows such as fast flow structure, drainage groove and aqueduct rows such as (or current) to improve, to reduce impact and the corrasion of mud-rock flow (or hyper-concentration flow), improve and prevent and treat the actual useful year of structure preventing and treating structure; Increase the drainage rate of mud-rock flow (or hyper-concentration flow) in row's guide structure, the row who strengthens row's guide structure leads performance.

The technical solution that realizes the utility model technical purpose is: a kind of mud-rock flow energy-dissipating structure, comprise row's guide structure, bottom at row's guide structure makes up the energy-dissipating structure that is made of the step-like energy dissipating tooth of a series of standards, the width of energy-dissipating structure is wide with the bottom width of row's guide structure, and the line of energy dissipating tooth angle edge is the ideal slots bottom line of row's guide structure.

Energy-dissipating structure is positioned at the middle and lower part of row's guide structure, about 1/3rd of the row's of occupying guide structure total length.Less, the terrace broad of shoulder height of energy-dissipating structure starting end and end end energy dissipating tooth, the shoulder height of interlude energy dissipating tooth are big, terrace is narrower.The terrace of energy dissipating tooth is the terrace of the slightly high inclination in edge, and the rank bank is vertical with horizontal plane, and angle edge (being called terrace edge again) is an arc.The inclination angle [theta] of terrace and horizontal plane=5 °～10 °, the pass between the radius R of terrace width a, rank bank height b and angle edge is: b=0.2～1.0m; A=(2～4) b; R=(0.2～0.8) m).

Technique effect of the present utility model is: after 1, debris flow body enters row's guide structures such as fast flow structure, drainage groove and aqueduct, producing whirlpool in the energy-dissipating structure section rolls, the jacking debris flow body, the reduction debris flow body is to the impact and the corrasion of row's guide structure, the actual useful year of extending structure, can the row's of making guide structure by being present service life to extend to about 15 years in 5～8 years.2, mud-rock flow enters the flow velocity that can increase mud-rock flow behind the energy-dissipating structure, and the increase amplitude reaches the effect that quick row leads mud-rock flow about 30～35%.

Description of drawings

Fig. 1 and Fig. 2 are two kinds of energy-dissipating structures in row's guide structure;

Fig. 3 is the function figure of energy-dissipating structure;

Fig. 4 is the parameter plan of energy dissipating tooth.

In the accompanying drawing, 1 is row's guide structure, and 2 is energy-dissipating structure, and 3 is that debris flow body, 4 is the rolling vortex.

The specific embodiment

A kind of mud-rock flow energy-dissipating structure, comprise row's guide structure 1, it is characterized in that: the bottom at row's guide structure 1 makes up the energy-dissipating structure 2 that is made of the step-like energy dissipating tooth of a series of standards, the width of energy-dissipating structure 2 is wide with the bottom width of row's guide structure 1, the line of energy dissipating tooth angle edge (terrace edge) is the ideal slots bottom line of row's guide structure 1, promptly with the tangent tangent line of row's guide structure bottom curve.Row's guide structure 1 is prevented and treated structure for mud-rock flows such as fast flow structure, drainage groove, aqueducts, and row's guide structure 1 shown in Figure 1 is fast flow structure, and row's guide structure 1 shown in Figure 2 is a drainage groove.

As shown in Figure 3, after mud-rock flow enters energy-dissipating structure 2, more than desirable trough line, produce the sliding pallet current because of the generation of rolling vortex 4, reduce the impact and the abrasions of 3 couples of rows of high speed debris flow body guide structure, 1 bottom at the energy dissipating tooth; Simultaneously, flowing velocity is accelerated in the frictional resistance effect that is subjected to structural base owing to debris flow body 3, and then brings into play energy-dissipating structure energy dissipating, drag reduction, speedup effect.

Energy-dissipating structure 2 is positioned at the middle and lower part of row's guide structure 1, and these positions are that mud-rock flow is to control structural impact, the most serious position of abrasion.Energy-dissipating structure 2 shared length and mud-rock flow flow and impact in row's guide structure 1, abrasion power are relevant, about 1/3rd of energy-dissipating structure 2 row's of occupying guide structures 1 total length of energy dissipating tooth formation.

Less, the terrace broad of the shoulder height of the energy dissipating tooth of energy-dissipating structure 2 starting ends and end end, the shoulder height of interlude are big, terrace is narrower.

The terrace of energy dissipating tooth is the terrace of the slightly high inclination in edge, is called to meet impulse face, meets impact and corrasion that impulse face is bearing debris flow body, and the rank bank is vertical with horizontal plane, is called the rushed back face, and the angle edge is an arc.

The inclination angle [theta] of terrace and horizontal plane=5 °～10 °, the pass between the radius R of terrace width a, rank bank height b and angle edge is:

b＝0.2～1.0m

a＝(2～4)b

R＝(0.2～0.8)m)

The energy dissipating tooth is formed by steel concrete or other masonry material cast in situs, meets impulse face and angle edge and adopts intensity material higher, that toughness is stronger to build.

Mud-rock flow One's name is legion, disaster are serious within Chinese territory, railway, highway and natural ecological environment are had strong destruction, and it is thousands of to have implemented row's guide structure that scale do not wait so far, but the cycle that repeats to build is shorter.Only study carefully the highway and the railway system, the utility model can be used for row's guide structures such as above-mentioned fast flow structure, aqueduct, drainage groove, but prevents and treats the tens billion of units of reduction of expenditure service life of structure because of prolongation; The utility model also can be used for China's Hydraulic and Hydro-Power Engineering in the ascendant, the anti-impact grinder journey design of hyper-concentration flow.

Claims

1, a kind of mud-rock flow energy-dissipating structure, comprise row's guide structure (1), it is characterized in that: the bottom at row's guide structure (1) makes up the energy-dissipating structure (2) that is made of the step-like energy dissipating tooth of a series of standards, the width of energy-dissipating structure (2) is wide with the bottom width of row's guide structure (1), and the line of energy dissipating tooth angle edge is the ideal slots bottom line of row's guide structure (1).

2, mud-rock flow energy-dissipating structure according to claim 1 is characterized in that: energy-dissipating structure (2) is positioned at the middle and lower part of row's guide structure (1), about 1/3rd of the row's of occupying guide structure (1) total length.

3, mud-rock flow energy-dissipating structure according to claim 2 is characterized in that: less, the terrace broad of shoulder height of energy-dissipating structure (2) starting end and end end energy dissipating tooth, the shoulder height of interlude energy dissipating tooth are big, terrace is narrower.

4, according to claim 1,2 or 3 described mud-rock flow energy-dissipating structures, it is characterized in that: the terrace of energy dissipating tooth is the terrace of the slightly high inclination in edge, and the rank bank is vertical with horizontal plane, and the angle edge is an arc.

5, mud-rock flow energy-dissipating structure according to claim 4 is characterized in that: the inclination angle [theta] of terrace and horizontal plane=5 °～10 °, and the pass between the radius R of terrace width a, rank bank height b and angle edge is:

b＝0.2～1.0m

a＝(2～4)b

R＝(02～0.8)m)