CN206887895U - A kind of overflow-type mud-rock flow blocking dam group - Google Patents
A kind of overflow-type mud-rock flow blocking dam group Download PDFInfo
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- CN206887895U CN206887895U CN201720562724.4U CN201720562724U CN206887895U CN 206887895 U CN206887895 U CN 206887895U CN 201720562724 U CN201720562724 U CN 201720562724U CN 206887895 U CN206887895 U CN 206887895U
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- China
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- aerial drainage
- rock flow
- dam
- overflow
- drainage hole
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Abstract
The utility model discloses a kind of overflow-type mud-rock flow blocking dam group, including overflow-type mud-rock flow blocking dam and the dam group that is made up of some overflow-type mud-rock flow blocking dams；The overflow-type mud-rock flow blocking dam is made up of key dam body, downflow weir, aerial drainage hole, and downflow weir is located above key dam body, and aerial drainage hole is several, is arranged on key dam body bottom, and key dam body is provided with spilled water hole, and spilled water hole is located above aerial drainage hole.The beneficial effects of the utility model are structure safety, desilting convenience, and retaining storage capacity can be used repeatedly, positive effect of preventing and reducing natural disasters.
Description
Technical field
The utility model belongs to hazards control technical field, is related to a kind of overflow-type mud-rock flow blocking dam and dam group.
Background technology
At present, the effect of mud-rock flow blocking dam is typically based on blocking, and its purpose predominantly blocks that to carry water husky, changes water delivery, defeated
Husky condition, adjust amount of water to be discharged and sedimentary loading, stabling slope and cheuch.When effective storage is become silted up by silt particle full in blocking dam, will lose
Go to retain, regulatory function, function of preventing and reducing natural disasters weakens significantly.
After effective storage is become silted up completely by silt particle in blocking dam, a large amount of solid bulk materials are stored in raceway groove, blocking dam is held
The Accumulation In Debris-flow pressure received is big, and blocking dam once bursts, and solid bulk materials are concentrated, fully supply, are formed bigger
Mud-rock flow, once causing downstream stages blocking dam enlarge-effect step by step, cause calamity ability to greatly reinforce, it is new hidden so as to be formed
Suffer from.
Utility model content
The purpose of this utility model is to provide a kind of overflow-type mud-rock flow blocking dam and dam group, and solving in blocking dam has
After effect storage capacity is silted completely, retain, the mudstone that effective storage is born after being become silted up completely by silt particle in regulatory function Problem of Failure and blocking dam
Flow the problem of deposit pressure is big, and blocking dam easily bursts.
Technical scheme is to include overflow-type mud-rock flow blocking dam and by some overflow-type mudstones used by the utility model
Flow the dam group of blocking dam composition；The overflow-type mud-rock flow blocking dam is made up of key dam body, downflow weir, aerial drainage hole, downflow weir position
Above key dam body, aerial drainage hole is several, is arranged on key dam body bottom, and key dam body is provided with spilled water hole, and spilled water hole, which is located at, to be let out
Flow above hole.
Further, downflow weir and aerial drainage hole conveyance capacity meet the mud-rock flow maximum stream flow for ensureing blocking dam safety.
Further, aerial drainage hole letdown flow, which is less than under the maximum for ensureing downstream guard plot safety, lets out safe traffic.
Further, aerial drainage hole minimum widith can guarantee that maximum stone particle diameter and desilting vehicle and equipment are led in excessively stream in raceway groove
Cross.
Further, dam group is made up of multiple overflow-type mud-rock flow blocking dams, and blocking dam and dam group's aggregate storage capacity can effectively block
The mud-rock flow maximum once total amount of going out under norm for civil defense.
Further, the ratio of aerial drainage hole minimum widith and maximum stone particle diameter in excessively stream is 1.5-2.0.
The beneficial effects of the utility model are structure safety, desilting convenience, and retaining storage capacity can be used repeatedly.
Brief description of the drawings
Fig. 1 is blocking dam structural representation of the present utility model；
Fig. 2 is blocking dam group horizontal layout schematic diagram of the present utility model.
In figure, 1. key dam bodies, 2. downflow weirs, 3. aerial drainage holes, 4. above-ground routes, 5. spilled water holes, 6.1# reservoir areas storage capacity, 7.2#
Reservoir area storage capacity.
Embodiment
The utility model is described in detail with reference to embodiment.
As shown in figure 1, overflow-type mud-rock flow blocking dam is made up of key dam body 1, downflow weir 2, aerial drainage hole 3, key dam body 1 is according to ground
Upper thread 4 is built, and downflow weir 2 is located at the top of key dam body 1, and aerial drainage hole 3 is several, is arranged on the bottom of key dam body 1, and downflow weir 2 flows
Amount, the flow of aerial drainage hole 3 should meet following condition：
1. downflow weir 2 and the conveyance capacity of aerial drainage hole 3 meet the mud-rock flow maximum stream flow for ensureing blocking dam safety；
QOverflow+∑QLet out≥Qmax；
2. the letdown flow of aerial drainage hole 3 should be less than letting out safe traffic under the maximum of guarantee downstream guard plot safety；
∑QLet out≤QS；
The minimum widith of aerial drainage hole 3 can guarantee that maximum stone particle diameter and desilting vehicle and equipment pass through in excessively stream in raceway groove；It is excellent
Choosing
3. being also provided with spilled water hole 5 on key dam body 1, spilled water hole 5 is located at the top of aerial drainage hole 3.Further strengthen sluicing energy
Power.
Q overflow-weir discharge；Q lets out-aerial drainage hole flow；Qmax-mud-rock flow is set up defences flow；Qs-under let out secure flows
Amount；D-aerial drainage hole minimum widith；Dmax is maximum stone particle diameter in excessively stream.
Overflow-type mud-rock flow blocking dam group, dam group is formed by multiple overflow-type mud-rock flow blocking dams, dam group's aggregate storage capacity should expire
Foot row condition：
Blocking dam and dam group's aggregate storage capacity can effectively block under norm for civil defense the mud-rock flow maximum once total amount of going out；
∑Vi≥Vmax；
I is natural number in formula, and Vmax is the debris flow gully maximum once total amount of going out under design frequency.
As shown in Fig. 2 the dam group of two overflow-type mud-rock flow blocking dam compositions, 1# reservoir areas storage capacity 6；2# reservoir areas storage capacity 7.
Blocking dam and dam group arrangement, the parameter such as spacing and dam body length, height of dam can be selected according to raceway groove actual conditions.
When mud-rock flow occurs, mud-rock flow safety upstream blocking dam downflow weir and aerial drainage hole under design frequency, mud-rock flow
Total make of ditch maximum, which is all temporarily blocked, is stranded in two blocking dam reservoir areas, and is downstream drained by aerial drainage hole, most
Next stage blocking dam reservoir area mud-rock flow under aerial drainage hole only by letting out, and letdown flow is less than downstream guard plot safe traffic, under guarantee
Guard plot safety is swum, so as to realize purpose of preventing and reducing natural disasters.
After mud-rock flow terminates, the mud-rock flow overwhelming majority that blocking dam group is temporarily deposited each reservoir area passes through under the aerial drainage hole of bottom
Let out, reservoir area siltation solid bulk materials are less.These drifts can lead in the case where later stage flood or small-scale mud-rock flow wash away carrying
Cross aerial drainage hole to clear up naturally, so as to empty storage capacity, guarantee blocks that to carry water husky, changes water delivery, Sediment Transport Condition, adjusts amount of water to be discharged and defeated
The realization of sand amount function, reaches the long-acting purpose prevented and reduced natural disasters., can be by letting out to part oversize block and trees, high-stem plant
Flow the transport of hole manual cleaning.
It should be noted that only when debris flow and landslips are more than downstream guard plot safe traffic, just there is mud in blocking dam
Rock glacier is temporarily retained, and when debris flow and landslips are less than downstream guard plot flow, debris flow and landslips all pass through overflow-type blocking dam
Let out under the whole safety of bottom aerial drainage hole.
Because aerial drainage hole size is big, handling capacity is strong, and reservoir area is forever deposited, and solid matter is few, and solid bulk materials are to blocking
Dam pressure is substantially not present, so as to ensure blocking dam safe operation.
The quantity of blocking dam can be according to the occurrence frequency and uninterrupted reasonable selection of this area's mud-rock flow；Blocking dam dam type
Reasonable selection under the conditions of aforementioned dimensions and conveyance capacity, storage capacity etc. can be referred to before stabilization is met.
To sum up, the beneficial effects of the utility model are：Mud-rock flow blocking dam structure of dam type is simple, and it is strong to retain ability, under
Vent flow is safe and reliable, and drift is cleared up naturally in storehouse, retains the repeatable utilization of storage capacity, and temporary traffic is unimpeded in raceway groove, is not required to
Another to set around dam road, later stage desilting is convenient, the Accumulation In Debris-flow pressure that blocking dam is not subject to substantially, to mud-rock flow raceway groove from
Right evolutionary process influences smaller, positive effect of preventing and reducing natural disasters.Overflow-type mud-rock flow flood detention blocking dam provided by the utility model and
Dam, which is mined massively, takes the mode that is combined with aerial drainage of remaining in a standstill, and dam body is blocked, downflow weir and the flood discharge of aerial drainage hole while is carried out.Blocking dams at different levels
Formation effectively retains storage capacity, blocks and carries water sand, changes water delivery, Sediment Transport Condition, extends under mud-rock flow and lets out the time, ensures that amount of water to be discharged is expired
Foot trip guard plot safety；A small amount of bulk solid mass that mud-rock flow deposits later is more compared with small flood or mud-rock flow by the later stage
Secondary wash away under carrying is let out, and reservoir area siltation thing is voluntarily cleared up, and ensures that effective storage can block mud-rock flow maximum one under stagnant norm for civil defense
Mud-rock flow is retained in the secondary amount of going out, realization, adjusts letdown flow function, and retaining storage capacity can be used repeatedly, increase blocking dam and
The ability of preventing and reducing natural disasters of dam group.Aerial drainage hole size facilitate later stage vehicle and equipment by and dredging operation.For reservoir area siltation
Part super large particle diameter and trees, high-stem plant etc. influence the material of aerial drainage hole conveyance capacity, can by aerial drainage hole passage manually according to
Secondary cleaning and transport, accomplish " retain, remain in a standstill, aerial drainage, desilting " multidigit in same mud-rock flow blocking dam and dam group's countermeasure system
One, realizes the purpose prevented and reduced natural disasters.
Described above is only to better embodiment of the present utility model, not makees any form to the utility model
On limitation, every any simple modification made according to the technical essence of the utility model to embodiment of above is equivalent to become
Change and modify, belong in the range of technical solutions of the utility model.
Claims (1)
- A kind of 1. overflow-type mud-rock flow blocking dam group, it is characterised in that：It is made up of multiple overflow-type mud-rock flow blocking dams, overflow-type Mud-rock flow blocking dam is made up of key dam body, downflow weir, aerial drainage hole, and downflow weir is located above key dam body, and aerial drainage hole is several, if Put in key dam body bottom, key dam body is provided with spilled water hole, and spilled water hole is located above aerial drainage hole；Downflow weir and aerial drainage the hole conveyance capacity meets the mud-rock flow maximum stream flow for ensureing blocking dam safety；Aerial drainage hole letdown flow, which is less than under the maximum for ensureing downstream guard plot safety, lets out safe traffic；Aerial drainage hole minimum widith can guarantee that maximum stone particle diameter and desilting vehicle and equipment pass through in excessively stream in raceway groove；The ratio of aerial drainage hole minimum widith and maximum stone particle diameter in excessively stream is 1.5-2.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720562724.4U CN206887895U (en) | 2017-05-19 | 2017-05-19 | A kind of overflow-type mud-rock flow blocking dam group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720562724.4U CN206887895U (en) | 2017-05-19 | 2017-05-19 | A kind of overflow-type mud-rock flow blocking dam group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206887895U true CN206887895U (en) | 2018-01-16 |
Family
ID=61342532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720562724.4U Expired - Fee Related CN206887895U (en) | 2017-05-19 | 2017-05-19 | A kind of overflow-type mud-rock flow blocking dam group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206887895U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505489A (en) * | 2018-04-19 | 2018-09-07 | 齐绍诚 | A kind of novel protective dike and its means of defence |
| CN108867569A (en) * | 2018-07-12 | 2018-11-23 | 中国地质科学院探矿工艺研究所 | Natural dredging debris flow sand dam and application thereof |
-
2017
- 2017-05-19 CN CN201720562724.4U patent/CN206887895U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505489A (en) * | 2018-04-19 | 2018-09-07 | 齐绍诚 | A kind of novel protective dike and its means of defence |
| CN108867569A (en) * | 2018-07-12 | 2018-11-23 | 中国地质科学院探矿工艺研究所 | Natural dredging debris flow sand dam and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20180519 |