CN106320252A - A blocking composite structure and method for gully water treatment and debris flow protection - Google Patents

A blocking composite structure and method for gully water treatment and debris flow protection Download PDF

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Publication number
CN106320252A
CN106320252A CN201510337331.9A CN201510337331A CN106320252A CN 106320252 A CN106320252 A CN 106320252A CN 201510337331 A CN201510337331 A CN 201510337331A CN 106320252 A CN106320252 A CN 106320252A
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dam
mud
blocking
river course
ditch
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CN106320252B (en
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张超
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PowerChina Chengdu Engineering Co Ltd
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PowerChina Chengdu Engineering Co Ltd
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Abstract

The invention provides a blocking composite structure and method for gully water treatment and debris flow protection, which can effectively treat all-year-round running water of gullies and resist debris flow, and belongs to the field of water conservancy and hydropower constructions. The blocking composite structure comprises a water retaining dam and a drainage tunnel making an upstream riverway of the water retaining dam communicate with a downstream riverway, and further comprises an intercepting dam which is located on the upstream side of the water retaining dam. One end of the intercepting dam is connected with the edge of the riverway and the other end extends into the riverway. While the water retaining dam and the drainage tunnel are arranged, the intercepting dam is arranged on the upstream side of the water retaining dam, so that the blocking composite structure can perform effective blocking and drainage treatment on all-year-round running water of gullies, provide a temporary construction area for a downstream area, resist special natural disasters such as debris flow and prevent the damage to the water retaining dam caused by debris flow.

Description

Process for ditch-water and block combinative structure and the method for mud-rock flow protection
Technical field
The present invention relates to water conservancy and hydropower structure field, particularly relate to one and carry out ditch-water process for high-mountain gorge areas tributary cheuch And the combinative structure of blocking of mud-rock flow protection, and use the method for blocking of this combinative structure of blocking.
Background technology
When high-mountain gorge areas building Hydropower Project, tributary cheuch mostly is perennial flowing water and cutting is relatively deep, and Jin Ba district can profit Construction site few, and engineering construction has substantial amounts of construction waste need to store up, also needs to arrange all kinds of construction auxiliary equipment, Therefore, often utilize the tributary cheuch near dam site as blocking ditch type Dumping Sites, construction auxiliary equipment district etc., cheuch need to be carried out ditch Water processes.The mode of conventional ditch-water processing mode many employings checkdam+scupper, this processing mode is mainly for containing solids Matter less clear water ditch.But, due to heavy rain or the impact of other natural disasters, easily there is mud-stone flow disaster, mud in some cheuches Rock glacier can cause scupper to block, and causes impeded drainage, and checkdam also can be caused certain impact by mud-rock flow so that checkdam Safety relatively low.Therefore, conventional ditch-water treatment measures are difficult to meet engineering construction needs, and needing to study one can be to often The year flowing water row's of gear process effectively, can resist again the Hydraulic and Hydro-Power Engineering structure of state of debris flow disasters.
Summary of the invention
Present invention solves the technical problem that to be to provide and a kind of solve can effectively the processing cheuch perennial flowing water and resist mud of the problems referred to above Processing for ditch-water and the combinative structure of blocking of mud-rock flow protection of rock glacier, and use the method for blocking of this combinative structure of blocking.
The technical solution adopted for the present invention to solve the technical problems is: process for ditch-water and the combination knot of blocking of mud-rock flow protection Structure, including checkdam and the scupper connected with downstream river course checkdam upper river;Also include intercepting dam, described interception dam Being positioned at the upstream of checkdam, the one end intercepting dam is connected with edge, river course, and the other end extends in river course.
Further: be respectively arranged with at least one in both sides, river course and intercept dam.
Further: described interception dam has multiple, and multiple interception dam flows to along river course staggered successively be arranged on both sides, river course.
Further: spacing a between adjacent two interception dams is equal or flows to direction spacing a along river course and is gradually reduced.
Further: described interception dam includes stopping that section, described stop section flow to vertical with river course, stops one end and the river of section Edge, road connects, and the other end extends in river course.
Further: described interception dam also includes that the section of blocking, described stop section and the section of blocking connect into " L " shape;And it is described The one end of the section of blocking is connected with the one end extended in river course in stop section, and the section of the blocking other end extends towards upstream, river course.
Further: length b on the described interception dam half more than river width c.
Further: described interception dam is successively stacked by reinforced gabion and forms, and is filled with block stone in reinforced gabion;Intercept dam Upstream face be set to vertical type, intercept dam back and be set to staged.
Further: intercepting dam and be connected by spud pile and bottom of river channel riverbed are fixing, the bottom intercepting dam is embedded in riverbed.
It addition, the present invention also provides for a kind of side of blocking using the above-mentioned combinative structure of blocking protected for ditch-water process and mud-rock flow Method, particularly as follows: in the case of there is not mud-stone flow disaster, ditch-water is stopped by checkdam after flowing through interception dam, then by row Water hole introduces downstream river course;When there is mud-stone flow disaster, the solid matter in mud-rock flow is intercepted dam and intercepts step by step, and mudstone Ditch water section in stream introduces downstream river course by scupper after flowing through interception dam;After mud-stone flow disaster occurs, by by desilting Vehicle is sailed to be purged the solid matter intercepted in interception trip to the dam.
The invention has the beneficial effects as follows: in the case of being provided with checkdam and scupper, interception dam be set in checkdam upstream again, Thus can resist and by interception dam, the mudstone solid matter in mud-rock flow be intercepted in the case of cheuch generation mud-rock flow, it is to avoid The impact of checkdam is endangered by stopping state and mud-rock flow to scupper.It addition, by interception dam being arranged to " L " shape, Its interception result to solid matter can be strengthened, and blocked by the stepped of build stack using reinforced gabion to add block stone Cutting dam, its block stone can be gathered materials on the spot, and integral construction is convenient, cheap, low to river course fundamental importance, removes and overhauls conveniently; Also allowing for current by the gap between stone through intercepting dam, solid matter is then blocked simultaneously.The present invention can be normal to cheuch The year flowing water effectively row's of gear process, provides temporary construction region for downstream;The special natural disasters such as mud-rock flow can be resisted again, keep away Exempt from the mud-rock flow harm to checkdam.
Accompanying drawing explanation
Fig. 1 is the floor map of the present invention;
Fig. 2 is the sectional view of Section A-A in Fig. 1;
Fig. 3 is the sectional view of section B-B in Fig. 1;
Fig. 4 is the top view intercepting dam;
Figure is labeled as: checkdam 1, scupper 2, interception dam 3, stop section 31, the section of blocking 32, edge, river course 4, reinforcing bar Spacing a between gabion 5, block stone 6, riverbed 7, spud pile 8, adjacent interception dam, interception length b on dam, river width c.
Detailed description of the invention
The present invention is further described with detailed description of the invention below in conjunction with the accompanying drawings.
Shown in as shown in Figure 1 to Figure 4, the combinative structure of blocking protected for ditch-water process and mud-rock flow of the present invention, including Checkdam 1 and the scupper 2 that checkdam 1 upper river is connected with downstream river course;Also include intercepting dam 3, described interception dam 3 Being positioned at the upstream of checkdam 1, the one end intercepting dam 3 is connected with edge, river course 4, and the other end extends in river course.Wherein dash The effect of dam 1 and scupper 2 is to realize the stop to cheuch river, provides temporary construction region for downstream;And intercept dam 3 Effect is the solid matter for intercepting in river, realizes solid water shunting simultaneously.Such as the interception to mudstone when there is mud-rock flow, Avoid it to be directly impinging at checkdam 1, therefore can reduce the mudstone percussion to checkdam 1, and avoid mudstone to cause Blocking to scupper.
General, it is respectively arranged with at least one in both sides, river course and intercepts dam 3, so that on direction, river course, whole to river course The interception dam dam body of correspondence is all had on individual cross section;Certainly, the particular number intercepting dam 3 can set according to practical situation.Generally When being provided with multiple interception 3, typically multiple interception dams 3 can be arranged on both sides, river course along what the river course flow direction was interlocked successively;As Shown in Fig. 1.By intercept dam group multistage block after, mudstone solids reduces step by step, basic when reaching at checkdam 1 The mud-rock flow harm to checkdam 1 can be eliminated.
It addition, spacing a between adjacent two interception dams 3, being typically based on practical situation and set, spacing a is excessive, can cause and execute Work scope is relatively big, increases difficulty of construction;And spacing a is too small, then can reduce the blocking effect to mudstone.It addition, according to reality Situation, typically can arrange spacing a between adjacent two interception dams 3 equal or flow to direction spacing a along river course and gradually subtract Little;When being provided with as flowing to situation that direction spacing a is gradually reduced along river course, can in the case of ensureing that blocking effect is preferably, Shorten as far as possible and intercept the distribution distance that dam 3 flows to along river course, boundary of works area can be shortened, reduce difficulty of construction.
It addition, general interception dam 3 includes stopping section 31, and in order to ensure blocking effect, section 31 and river course stream will be stopped To being vertically arranged, as shown in fig. 1, being connected with edge, river course 4 one end stopping section 31, the other end extends in river course. On this basis, further, also can arrange the section of blocking 32, described stop section 31 and the section of blocking 32 connect into " L " shape;And One end of the section of blocking 32 described in and with stop that the one end extended in river course in section 31 is connected, the section of blocking 32 other end is towards on river course Trip extends.The effect of the section of blocking 32 mainly avoids the solid matters such as mudstone to flow out from the free end stopping section 31, can strengthen and block Cut the dam 3 interception result to mudstone.
It addition, in order to ensure that intercepting dam 3 can intercept by width range whole to river course, therefore it is required that intercept length b on dam 3 Half more than river width c.
Form it addition, interception dam 3 is successively stacked by reinforced gabion 5 by the present invention, and in reinforced gabion 5, be filled with block stone 6;The upstream face intercepting dam 3 is set to vertical type, and the back side intercepting dam 3 is set to staged.Reinforced gabion 5 is by steel bar welding Connect and form, and stone 6 can be gathered materials on the spot, by using reinforced gabion 5 to add the combination of block stone 6, greatly simplify construction difficulty Degree, reduces construction cost, improves efficiency of construction.It addition, welding or the side of binding can be taked between adjacent reinforced gabion 5 Formula is attached.Use reinforced gabion 5 to add the structure of block stone 6, owing to having gap between stone, therefore also allow for current from Gap, through intercepting dam 3, can reduce the current surge to interception dam 3, in turn ensure that the solid matters such as mudstone are then had simultaneously The stop of effect is got off;Be conducive to the stability of whole dam body.It addition, the back side intercepting dam 3 is arranged as staged, can improve The stability against sliding of dam body.Certainly, additionally also it should be guaranteed that the top intercepting dam 3 facilitates desilting vehicle pass-through, because working as mudstone After stream occurs, desilting vehicle is needed to carry out to carry out desilting operation on interception dam 3.
It addition, in order to strengthen the stability intercepting dam 3, also can be solid with bottom of river channel riverbed 7 by spud pile 8 by intercepting dam 3 Fixed connection.One end of spud pile 8 is placed in riverbed 7, and the other end is placed to intercept in dam 3.On this basis, also can be by The bottom intercepting dam 3 is embedded in riverbed 7, to further enhance the stability intercepting dam 3.
It addition, the present invention is using above-mentioned process and in the case of the combinative structure of blocking of mud-rock flow protection, to ditch-water for ditch-water Combined method of blocking particularly as follows: in the case of there is not mud-stone flow disaster, ditch-water is hindered by checkdam 1 after flowing through interception dam 3 Gear, then introduces downstream river course by scupper 2;When there is mud-stone flow disaster, the solid matter in mud-rock flow is intercepted dam 3 intercept step by step, and the ditch water section in mud-rock flow introduces downstream river course by scupper 2 after flowing through interception dam 3;At mud-rock flow After disaster occurs, by travelling the solid matter intercepted is purged on interception dam 3 by desilting vehicle.
To sum up, block combinative structure and the method protected for ditch-water process and mud-rock flow of the present invention, can be to cheuch The perennial flowing water effectively row's of gear process, provides temporary construction region for downstream;The special natural disasters such as mud-rock flow can be resisted again. And, the most of dam material intercepting dam 3 can be gathered materials on the spot, its easy construction, cheap, to river course fundamental importance Low, desilting facilitates, removes and overhaul easily.

Claims (10)

1. process for ditch-water and the combinative structure of blocking of mud-rock flow protection, including checkdam (1) with by checkdam (1) upstream The scupper (2) that river course connects with downstream river course;It is characterized in that: also including intercepting dam (3), described interception dam (3) is positioned at The upstream of checkdam (1), the one end intercepting dam (3) is connected with edge, river course (4), and the other end extends in river course.
2. the combinative structure of blocking protected for ditch-water process and mud-rock flow as claimed in claim 1, it is characterised in that: in river Both sides, road are respectively arranged with at least one and intercept dam (3).
3. the combinative structure of blocking protected for ditch-water process and mud-rock flow as claimed in claim 1, it is characterised in that: described Intercept dam (3) and have multiple, and multiple interception dam (3) is arranged on both sides, river course along what the river course flow direction was interlocked successively.
4. the combinative structure of blocking protected for ditch-water process and mud-rock flow as claimed in claim 3, it is characterised in that: adjacent Spacing a between two interception dams (3) is equal or flows to direction spacing a along river course and is gradually reduced.
5. the combinative structure of blocking protected for ditch-water process and mud-rock flow as claimed in claim 1, it is characterised in that: described Intercepting dam (3) to include stopping section (31), described stop section (31) and river course flow to vertical, one end of stop section (31) and Edge, river course (4) connects, and the other end extends in river course.
6. the combinative structure of blocking protected for ditch-water process and mud-rock flow as claimed in claim 5, it is characterised in that: described Intercept dam (3) and also include that the section of blocking (32), described stop section (31) and the section of blocking (32) connect into " L " shape;And institute The one end stating the section of blocking (32) is connected with the one end extending in river course in stop section (31), the section of blocking (32) other end court Upstream, river course extends.
7. the combinative structure of blocking protected for ditch-water process and mud-rock flow as claimed in claim 1, it is characterised in that: described Intercept the length b half more than river width c on dam (3).
8. the combinative structure of blocking protected for ditch-water process and mud-rock flow as claimed in claim 1, it is characterised in that: described Interception dam (3) is successively stacked by reinforced gabion (5) and forms, and is filled with block stone (6) in reinforced gabion (5);Intercept dam (3) Upstream face be set to vertical type, the back side intercepting dam (3) is set to staged.
9. the combinative structure of blocking protected for ditch-water process and mud-rock flow as claimed in claim 8, it is characterised in that: intercept Dam (3) is connected by spud pile (8) and bottom of river channel riverbed (7) are fixing;The bottom intercepting dam (3) is embedded into riverbed (7) In.
10. process for ditch-water and the method for blocking of mud-rock flow protection, it is characterised in that: use in the claims 1 to 9 Processing for ditch-water and the combinative structure of blocking of mud-rock flow protection described in any one, in the case of there is not mud-stone flow disaster, Ditch-water is stopped by checkdam (1) after flowing through interception dam (3), then introduces downstream river course by scupper (2);There is mud During rock glacier disaster, the solid matter in mud-rock flow is intercepted dam (3) and intercepts step by step, and the ditch water section in mud-rock flow flows through interception Dam (3) introduces downstream river course by scupper (2) afterwards;After mud-stone flow disaster occurs, by desilting vehicle is being intercepted dam (3) upper traveling is to be purged the solid matter intercepted.
CN201510337331.9A 2015-06-17 2015-06-17 Block composite structure and the method protected for ditch water process and mud-rock flow Active CN106320252B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106801403A (en) * 2017-03-23 2017-06-06 辽宁科技大学 A kind of method for preventing mud-stone flow disaster and mudstone apoblema to recycle
CN107740381A (en) * 2017-10-26 2018-02-27 合肥学院 A kind of opened debris flow blocking dam set based on waste and old Container Reconstruction
CN110965526A (en) * 2019-12-23 2020-04-07 太原理工大学 Be adapted to assembled retaining structure that small-size mud-rock flow ditch was administered
CN111335260A (en) * 2020-05-06 2020-06-26 段刚强 Movable type flow dividing and blocking system for debris flow prevention and control
CN111764352A (en) * 2020-07-14 2020-10-13 嘉兴金喜莱科技有限公司 Dissipation structure for preventing and treating debris flow in bridge engineering and design method
CN112049069A (en) * 2020-07-27 2020-12-08 成龙建设集团有限公司 Construction method of ecological retaining dam

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4118770B2 (en) * 2003-09-04 2008-07-16 石川島建材工業株式会社 Sabo dam storage and drainage structure
KR100973776B1 (en) * 2009-12-14 2010-08-04 대한민국 Scenic ecotype debris barrier
CN102605749A (en) * 2012-03-12 2012-07-25 中钢集团马鞍山矿山研究院有限公司 Construction method of shuttle-shaped dam for intercepting debris flow
CN102733352A (en) * 2012-06-21 2012-10-17 兰州大学 Opened debris flow blocking dam set
CN203613507U (en) * 2013-10-16 2014-05-28 中国科学院、水利部成都山地灾害与环境研究所 Mud-rock flow gabion prevention structure body
CN104018471A (en) * 2014-06-16 2014-09-03 中国电建集团成都勘测设计研究院有限公司 Blocking overflow dam structure
CN204163057U (en) * 2014-10-28 2015-02-18 中国电建集团成都勘测设计研究院有限公司 A kind of for the blocking dam in mud-rock flow
CN204174574U (en) * 2014-10-31 2015-02-25 中国电建集团成都勘测设计研究院有限公司 For the gear row structure of mud-rock flow protection

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4118770B2 (en) * 2003-09-04 2008-07-16 石川島建材工業株式会社 Sabo dam storage and drainage structure
KR100973776B1 (en) * 2009-12-14 2010-08-04 대한민국 Scenic ecotype debris barrier
CN102605749A (en) * 2012-03-12 2012-07-25 中钢集团马鞍山矿山研究院有限公司 Construction method of shuttle-shaped dam for intercepting debris flow
CN102733352A (en) * 2012-06-21 2012-10-17 兰州大学 Opened debris flow blocking dam set
CN203613507U (en) * 2013-10-16 2014-05-28 中国科学院、水利部成都山地灾害与环境研究所 Mud-rock flow gabion prevention structure body
CN104018471A (en) * 2014-06-16 2014-09-03 中国电建集团成都勘测设计研究院有限公司 Blocking overflow dam structure
CN204163057U (en) * 2014-10-28 2015-02-18 中国电建集团成都勘测设计研究院有限公司 A kind of for the blocking dam in mud-rock flow
CN204174574U (en) * 2014-10-31 2015-02-25 中国电建集团成都勘测设计研究院有限公司 For the gear row structure of mud-rock flow protection

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
周德彦: "以两河口瓦支沟为例探讨泥石流防护处理设计新思路", 《中国水能及电气化》 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106801403A (en) * 2017-03-23 2017-06-06 辽宁科技大学 A kind of method for preventing mud-stone flow disaster and mudstone apoblema to recycle
CN107740381A (en) * 2017-10-26 2018-02-27 合肥学院 A kind of opened debris flow blocking dam set based on waste and old Container Reconstruction
CN110965526A (en) * 2019-12-23 2020-04-07 太原理工大学 Be adapted to assembled retaining structure that small-size mud-rock flow ditch was administered
CN110965526B (en) * 2019-12-23 2021-06-15 太原理工大学 Be adapted to assembled retaining structure that small-size mud-rock flow ditch was administered
CN111335260A (en) * 2020-05-06 2020-06-26 段刚强 Movable type flow dividing and blocking system for debris flow prevention and control
CN111335260B (en) * 2020-05-06 2023-12-29 盐城荣泰石油机械有限公司 Movable diversion blocking system for debris flow prevention and treatment
CN111764352A (en) * 2020-07-14 2020-10-13 嘉兴金喜莱科技有限公司 Dissipation structure for preventing and treating debris flow in bridge engineering and design method
CN111764352B (en) * 2020-07-14 2021-12-07 嘉兴市环泰工程技术有限公司 Dissipation structure for preventing and treating debris flow in bridge engineering and design method
CN112049069A (en) * 2020-07-27 2020-12-08 成龙建设集团有限公司 Construction method of ecological retaining dam

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