CN105155478B - A kind of new damming dam reinforces Application way - Google Patents

A kind of new damming dam reinforces Application way Download PDF

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CN105155478B
CN105155478B CN201510159700.XA CN201510159700A CN105155478B CN 105155478 B CN105155478 B CN 105155478B CN 201510159700 A CN201510159700 A CN 201510159700A CN 105155478 B CN105155478 B CN 105155478B
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dam
pipe
damming
damming dam
downstream
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CN105155478A (en
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刘汉龙
丁选明
田攀
肖杨
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Chongqing University
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Chongqing University
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Abstract

The invention discloses a kind of new damming dam to reinforce Application way, comprises the following steps:In damming dam crest face, placement diameter is 10cm~30cm siphon pipe;Siphon pipe water suction produces siphonic effect;Compacting leveling is carried out to damming dam crest face with vibrating rammer;Arrange and drill along the longitudinal axis in damming dam crest face;Grouting Pipe is placed in the borehole;In drilling cementing material is irrigated with high-pressure injection pump;Armored concrete Prefabricated hollow pipe is buried at damming dam both ends;Damming dam crest face casting concrete;Ballast is carried out in downstream face slope angle;Reparation is carried out to damming dam upstream face and downstream face and forms bank protection;Excavate gutter;Siphon pipe is removed, forms dam body.The invention process is simple, save material, economical and efficient, implementation result is good, has broad application prospects.

Description

A kind of new damming dam reinforces Application way
Technical field
The invention belongs to hydraulic engineering technical field, more particularly to a kind of new damming dam strengthening Application way.
Background technology
Western China is mountain area, and topographic and geologic complicated condition, ravines and guillies criss-cross, rainfall enriches, and western China It is the region that seismic activity takes place frequently again.In seismic process, usually landslide can be easily caused with heavy rain, massif.Landslide Barrier lake is easily formed, for example, the Wenchuan earthquake of 2008, forms barrier lake at 34 altogether, wherein Tangjiashan barrier lake is ground Maximum, the most dangerous barrier lake that earthquake centre is formed, its Peak sink are 3.2 billion cubic meters, and peak level is 743.1 meters, Upstream and downstream peak level difference reaches 79 meters, and the situation is desperate at that time, once damming body is collapsed, will cause big flood, cause down Trip Beichuan county town is flooded.Final People's Armed Police excavates what is combined with explosion by the help of heavy-duty machinery using heavy-duty machinery Overflow big vast groove of technology mining removes damming dam, consumes substantial amounts of human and material resources and financial resources, simultaneously for participating in removing damming body Armed police troops have very big danger, and the utilization of blasting technique, and for damming dam, the stabilization of itself also has a great impact.
On the other hand, because China's hydraulic power potentials deposit enriches, although many water conservancy water has been built in western China Electrical engineering, but the utilization rate of hydraulic power potentials is still very low.Checkdam common in engineering much all uses earth and rockfill dam type at present, And the construction of earth and rockfill dam needs substantial amounts of natural material.How existing damming dam to be used, making engineering can profit Dam, possess water storage, the ability to generate electricity, be to need to solve the problems, such as.
The content of the invention
It is an object of the present invention to overcome existing processing damming dam method, it is necessary to labor intensive, material resources, financial resources, and have The defects of dangerous, and a kind of new damming dam strengthening is invented, it is necessary to excavate substantial amounts of natural material when building earth and rockfill dam Application way, damming dam is turned waste into wealth and utilized.
A kind of new damming dam strengthening Application way, comprises the following steps:
(1) spacing between the siphon pipe that damming dam crest face placement diameter is 10cm~30cm, siphon pipe is 2~5m;
(2) siphon pipe absorbs water, and upper water is discharged to downstream along siphon pipe, produces siphonic effect;
(3) dam crest face megalith is moved to downstream Ba Jiao, slope angle ballast is formed, then with vibrating rammer to damming dam crest Face carries out compacting leveling;
(4) in damming dam crest face along longitudinal axis drill hole of drilling machine, and damming dam bottom is goed deep into, the spacing between drilling is 0.8 ~1.5m, and be distributed in dam crest face in blossom type;
(5) Grouting Pipe lays high-pressure injection pump in dam crest face, connects Grouting Pipe and high-pressure injection pump to foot of hole under;
(6) cementing material being irrigated with high-pressure injection pump in drilling, marginal not slurry pulls out Grouting Pipe on side, until drilling is filled up, Cementing material is penetrated into surrounding soil during slip casting, solidifies the soil body, plays antiseepage effect;
(7) siphon pipe persistently discharges water so that upper pond level is apart from more than dam crest face 5m;
(8) in the range of damming dam 5~10m of both ends, the high grooves of 3~5m are excavated;
(9) a diameter of 1~2m prefabricated reinforced concrete hollow pipe, top backfill, and being compacted again are installed;
(10) damming dam crest face pours C10~C30 normal concrete, and thickness is 30cm~50cm;
(11) unnecessary earth and stone material is stacked into downstream slope angle and carries out ballast;
(12) upstream face and downstream face are repaired to form dam slope;
(13) in the front of dam body downstream face prefabricated reinforced concrete hollow pipe, excavate width and be equal to precast reinforced coagulation Native pipe diameter, depth are 0.5m~1m gutter;
(14) in gutter, inner surface pours C10 normal concrete, and thickness is 10cm~20cm, in downstream face block stone Build by laying bricks or stones to form bank protection;
(15) siphon pipe, water fender of the erection & lift in prefabricated reinforced concrete hollow pipe water inlet are removed;
(16) dam body is ultimately formed.
It is of the invention compared with existing barrier lake administering method, the advantage is that:
(1) problem that remote mountain areas big machinery can not march into the arena is overcome, and large scale equipment can not after overcoming disaster The problem of carrying.Because siphon pipe is easily carried, after disaster occurs, siphon pipe can be installed in damming dam upper surface immediately, utilize Siphon principle discharges upper water, can control the height of upper pond level, maintains the stabilization of damming body itself, eliminates the prestige to downstream The side of body;
(2) good economy performance.Compared with the checkdam of routine, it is not necessary to it is a large amount of to excavate substantial amounts of natural earth rock material, only need Pour a small amount of cementing material and concrete;
(3) it is safe.By damming dam is the accumulation body that massif HIGH-SPEED LANDSLIDE is formed, the soil body has through high speed impact Higher density, it can keep stable behind landslide, illustrate that it has certain safety coefficient, it is solid by being poured in damming dam After tying material, the stability of dam body is improved, enhances impermeable ability;
(4) it is small to downstream influences.Water derived from siphon pipe and the water of gutter discharge are all slowly to flow to downstream, to downstream Without influence, overcome blast working dam bursting flood and jeopardize downstream security;
(5) siphon pipe can recycle;
(6) social value is big.The method of current processing barrier lake is all to need to consume resource, while can not create society It can be worth, and damming body be become the administering method on damming dam, it is only necessary to consume a small amount of resource, can both create huge society It can be worth, natural disaster is become a kind of present, realize the target that the mankind get along with natural harmony.
Brief description of the drawings
Fig. 1 --- drawing in side sectional elevation after damming dam installation siphon pipe
Fig. 2 --- damming dam borehole pattern
Fig. 3 --- dam body drilling cross-sectional view
Fig. 4 --- damming dam pours cross-sectional view after cementing material
Fig. 5 --- final damming dam drawing in side sectional elevation
Fig. 6 --- damming dam graphics
In figure:1 upper pond level, 2 filter screens, 3 damming dams, 4 siphon pipes, 5 levels of tail water, 6 drillings, 7 high-pressure injection pumps, 8 is solid Tie material, 9 normal concretes, 10 blocks of stones, 11 slope angle ballasts, 12 prefabricated reinforced concrete hollow pipes, 13 gutters.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples, but should not be construed the above-mentioned theme of the present invention Scope is only limitted to following embodiments.Without departing from the idea case in the present invention described above, known according to ordinary skill Knowledge and customary means, make various replacements and change, all should include within the scope of the present invention.
The method of this implementation disposal is through the following steps that come (with reference to 1~Fig. 6 of figure) for implementing:
(1) in the siphon pipe 4 that the top surface placement diameter of damming dam 3 is 10cm~30cm, the one end of siphon pipe 4 is located at upper pond level Less than 1, and upper pond level 1, at a distance of 3~5m, the other end is in the level of tail water more than 5, and the level of tail water 5 at a distance of 1~3m, siphon The water inlet of pipe 4 band filter screen 2, the spacing between siphon pipe 4 is 2m~5m, as shown in Figure 1;
(2) siphon pipe 4 absorbs water, and upper water is discharged to downstream along siphon pipe, produces siphonic effect;
(3) dam crest face megalith is moved to downstream Ba Jiao, slope angle ballast 11 is formed, then with vibrating rammer to damming dam 3 Top surface carries out compacting leveling;
(4) in the top surface of damming dam 3 along longitudinal axis drill hole of drilling machine, and the bottom of damming dam 3 is goed deep into, the spacing between drilling 6 is 0.8m~1.5m, and be distributed in dam crest face in blossom type, as shown in Figure 2;
(5) Grouting Pipe lays high-pressure injection pump 7 in dam crest face, connects Grouting Pipe and high-pressure injection pump to 6 bottoms that drill under 7, as shown in Figure 3;
(6) cementing material 8 is irrigated with high-pressure injection pump 7 in drilling 6, cementing material 8 can be that cement mortar or height are poly- The materials such as thing.Marginal not slurry pulls out Grouting Pipe on side, in the range of the 5~10m of both ends of damming dam 3, slip casting to apart from dam crest face 3~ During 5m, stop slip casting, in remaining position slip casting until filling up drilling 6, cementing material 8 penetrates into surrounding soil during slip casting In, solidify the soil body.Antiseepage effect is played, shown in institute Fig. 4;
(7) siphon pipe 4 continues draining so that upper pond level 1 is apart from more than dam crest face 5m;
(8) in the range of the 3~5m of both ends of damming dam 3, the high grooves of 3~5m are excavated;
(9) a diameter of 1~2m prefabricated reinforced concrete hollow pipe 12 is installed, the wall thickness of hollow pipe 12 is 100~200mm, Top backfill, and being compacted again;
(10) top surface of damming dam 3 pours C10~C30 normal concrete 9, and thickness is 30cm~50cm;
(11) unnecessary earth and stone material is stacked into downstream slope angle and carries out ballast 11;
(12) upstream face and downstream face are repaired to form dam slope;
(13) below prefabricated reinforced concrete hollow pipe 12, excavate width and be equal to prefabricated reinforced concrete pipe diameter, Depth is 0.5~1m gutter 13;
(14) in gutter, inner surface pours C10 normal concrete 9, and thickness is 10cm~20cm, in downstream face block Stone 10 builds by laying bricks or stones to form bank protection, as shown in Figure 5;
(15) siphon pipe 4, water fender of the erection & lift in the water inlet of prefabricated reinforced concrete hollow pipe 12 are removed;
(16) dam body 3 is ultimately formed, as shown in Figure 6.

Claims (2)

1. a kind of damming dam reinforces Application way, it is characterised in that damming dam method of disposal is through the following steps that realize:
(1) spacing between the siphon pipe that damming dam crest face placement diameter is 10cm~30cm, siphon pipe is 2m~5m;Siphon Pipe (4) one end be located at upper pond level (1) below, and upper pond level (1) apart 3~5m, the other end be in the level of tail water (5) with On, and the level of tail water (5) is at a distance of 1~3m, siphon pipe (4) water inlet band filter screen (2);
(2) siphon pipe is absorbed water by siphonic effect, upper water is discharged to downstream along siphon pipe;
(3) compacting leveling is carried out to damming dam crest face with vibrating rammer;
(4) several holes axially are bored with rig along dam in damming dam crest face, each hole depth reaches original riverbed, drills it Between spacing be 0.8m~1.5m;
(5) Grouting Pipe lays high-pressure injection pump in dam crest face, connects Grouting Pipe and high-pressure injection pump to foot of hole under;
(6) cementing material is irrigated with high-pressure injection pump in drilling, marginal not slurry pulls out Grouting Pipe on side, apart from damming dam (3) two Hold in the range of 5~10m, when slip casting is to apart from 3~5m of dam crest face, stop slip casting, in remaining position slip casting until filling up drilling (6), cementing material is penetrated into surrounding soil during slip casting, solidifies the soil body, forms impervious body;
(7) siphon pipe persistently discharges water so that upper pond level is apart from more than dam crest face 5m;
(8) in the range of damming dam 5~10m of two sides, the deep grooves of 3~5m are excavated in dam crest, the depth direction of groove is It is deep into inside dam body;
(9) a diameter of 1m~2m prefabricated reinforced concrete hollow pipe is installed, among the groove of pipe of concrete Embedded step (8), Top backfill, and being compacted again;
(10) damming dam crest face pours C10~C30 normal concrete, and thickness is 30cm~50cm;
(11) earth and stone material unnecessary caused by step (3) and step (8) is stacked into downstream slope angle and carries out ballast;
(12) upstream face and downstream face are repaired to form dam slope;
(13) in the lower section of the dam body downstream face prefabricated reinforced concrete hollow pipe mouth of pipe, excavate width and be equal to precast reinforced coagulation Native pipe diameter, depth are 0.5m~1m gutter;
(14) in gutter, inner surface pours C10 normal concrete, and thickness is 10cm~20cm, in downstream face stone block building Form bank protection;
(15) siphon pipe, water fender of the erection & lift in prefabricated reinforced concrete hollow pipe water inlet are removed;
(16) dam body is formed.
2. according to the method for claim 1, it is characterised in that:In step 3), when compacting flattens, dam crest face megalith is moved To downstream Ba Jiao.
CN201510159700.XA 2015-04-03 2015-04-03 A kind of new damming dam reinforces Application way Active CN105155478B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756019B (en) * 2016-03-29 2018-01-16 清华大学 A kind of ruggedized construction and its construction method for damming body

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* Cited by examiner, † Cited by third party
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CN100594275C (en) * 2008-10-16 2010-03-17 黄金伦 Method for siphoning barrier lake
KR20110009781U (en) * 2010-04-08 2011-10-14 코지텍 주식회사 siphon spillway
CN201762694U (en) * 2010-07-14 2011-03-16 陆振民 Dam flow guiding device
CN202688943U (en) * 2012-07-23 2013-01-23 侯圣春 Self-suction drainage system for barrier lake
JP5681738B2 (en) * 2013-02-27 2015-03-11 株式会社 ダムドレ Siphon drainage system
CN104264636A (en) * 2014-08-21 2015-01-07 伍以炳 Technology for using siphons to lower or control barrier lake level

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