CN105040724B - A kind of bad basic processing method of concrete dam joint - Google Patents
A kind of bad basic processing method of concrete dam joint Download PDFInfo
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- CN105040724B CN105040724B CN201510393700.6A CN201510393700A CN105040724B CN 105040724 B CN105040724 B CN 105040724B CN 201510393700 A CN201510393700 A CN 201510393700A CN 105040724 B CN105040724 B CN 105040724B
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Abstract
The present invention relates to a kind of bad basic processing method of concrete dam joint.It is an object of the invention to provide a kind of neither impact Rail Highway runs and meets the bad basic processing method of concrete dam joint of hydroelectric project project playout, aim to solve the problem that underlying strength and the antiseepage problem of poor geology Under Concrete dam joint, ensure flood season road travel safety, reduce slope excavating, reduce waste place, be conducive to water and soil conservation, cost saving.The technical scheme is that：This concrete dam joint arrangement is in the side of highway, including No. II basic and adjacent concrete dam joint basis of No. I concrete dam joint of next-door neighbour's highway, define, after No. I concrete dam joint foundation excavation, side slope of rising steeply, rising steeply, the thick plain concrete Gu Po of 20cm should be sprayed on side slope, the ground weak intercalated layer that discovery No. I concrete dam joint basis in construction midway has the attitude of rocks to delay tendency downstream below, inclination angle is 20～35 °.The present invention is applied to Hydraulic and Hydro-Power Engineering.
Description
Technical field
The present invention relates to a kind of processing method on the bad basis of concrete dam joint is it is adaptable to Hydraulic and Hydro-Power Engineering.
Background technology
Hydroelectric project hinge carries to dam body foundation and antiseepage requirement is higher, and base is preferably located on dam joint structure basis
On rock, but run into bank and have slip mass, artificial slag, rubble clay, there is the complex foundation condition such as weak interbed on dam joint basis
When being close to railway or highway, side slope and dam joint foundation excavation are extremely restricted and even cannot construct again.On plain tract
Build that this problem of water conservancy and hydropower multi-purpose project is very prominent, the danger of flood season temporary construction is just especially big, in order to ensure
Side slope not unstability, usually first rush construction and railway or highway adjacent concrete dam joint, with alleviate dam joint foundation excavation difficulty big,
The difficulties such as construction time cut-out highway impact traffic, but adjacent foundation can be brought not yet to excavate, the unknown risk of geological conditions,
Thus affecting dam foundation bearing capacity and anti-seepage effect.
Content of the invention
The technical problem to be solved in the present invention is：For above-mentioned problem, one kind is provided neither to affect Rail Highway
The processing method on the bad basis of concrete dam joint running and meeting hydroelectric project project playout is it is intended to solve poor geology
The underlying strength of Under Concrete dam joint and antiseepage problem, it is ensured that flood season road travel safety, reduce slope excavating, reduce
Waste place, is conducive to water and soil conservation, cost saving.
The technical solution adopted in the present invention is：A kind of bad basic processing method of concrete dam joint, described coagulation
Earth dam joint arrangement in the side of highway, including No. II basic and adjacent concrete of No. I concrete dam joint of next-door neighbour's highway
Dam joint basis is it is characterised in that the process step of this concrete dam joint is as follows：
A, the local excavation carrying out highway slope and being close to No. I concrete dam joint basis of highway, form after excavation
Soil property rise steeply the thick plain concrete of spray 20cm in side slope；
B, pour No. I concrete dam joint basis, after concrete reaches and pours age, carry out No. II concrete dam joint
The excavation on basis, discloses the ground weak intercalated layer under No. I concrete dam joint basis, and tendency downstream is delayed in this interlayer occurrence, inclines
Angle is 20～35 °；
C, in the range of No. I concrete dam joint basal perimeter lay blast hole, draw after small pit goaf controlled blasting and dig out ground
The clay of base weak intercalated layer, and arrange trapezoidal sand drift outside the laying scope of blast hole；
D, to drawing the ground weak intercalated layer back filled foundation concrete plug digging after process, pour No. II concrete dam joint base
Plinth, carries out curtain grouting in foundation of dam on the basis of No. I concrete dam joint basis and No. II concrete dam joint, until basis is relatively
Below water barrier.
The foundation plane width on described No. I concrete dam joint basis and No. II concrete dam joint basis is respectively 10-
20m.
The invention has the beneficial effects as follows：When the present invention is processed to concrete dam joint construction and excavation, neither impact railway is public
Road is run and is met hydroelectric project project playout requirement, and dam foundation treatment is simple；Disclose not after adjacent dam body foundation excavates
After good geological conditions, by small pit goaf static blasting, draw and dig ground weak intercalated layer, fill concrete plugs and changes, basic curtain fills
Slurry, can be effectively addressed, and meet dam joint basis and carry and antiseepage requirement, ensured flood season road travel safety, subtracted
Lack slope excavating, reduced waste place, be conducive to water and soil conservation, cost saving；The present invention is to solution next-door neighbour's highway
Dam joint basis is bad, adjacent buildings basement rock utilizes the face discrepancy in elevation big, and flood season Upon Slope Stability has high demands, and the construction time ensures road
The benefit of the technical barriers such as the unimpeded requirement in road is obvious.
Brief description
Fig. 1 is the plane graph of the present invention.
Fig. 2 is the A-A view of the present invention.
Fig. 3 is the B-B view of the present invention.
Fig. 4 is the C-C view of the present invention.
Specific embodiment
The present embodiment is a kind of processing method on the bad basis of concrete dam joint, and this concrete dam joint arrangement is in highway
1 side, No. I concrete dam joint basis 4 including next-door neighbour's highway 1 and adjacent No. II concrete dam joint basis 5, No. I
Concrete dam joint basis 4 defines, after excavating, side slope 2 of rising steeply, and should spray the thick plain concrete 3 of 20cm admittedly rising steeply in side slope 2
Slope.The ground that discovery No. I concrete dam joint basis 4 in construction midway has the attitude of rocks to delay tendency downstream below, inclination angle is 20～35 °
Base weak intercalated layer 7, therefore needs to being further continued for construction after this ground weak intercalated layer replacement Treatment, concrete operation step is as follows：
1st, as shown in Figure 1 and Figure 2, the slope first carrying out highway 1 and the office on No. I concrete dam joint basis 4 being close to highway
Portion excavates, and the soil property being formed after the excavation thick plain concrete 3 of spray 20cm in side slope 2 that rises steeply is protected；
2, as shown in figure 3, pouring No. I concrete dam joint basis 4, after concrete reaches and pours age, carry out No. II
The excavation on concrete dam joint basis 5, at this moment disclosing No. I concrete dam joint basis 4 has ground weak intercalated layer 7 below, should
Tendency downstream is delayed in the occurrence of ground weak intercalated layer, and inclination angle is 20～35 °；
3 as shown in figure 4, lay in the 4 periphery certain limits of No. I concrete dam joint basis blast hole (include pipe laying and
Explosive) 8, the method using small pit goaf controlled blasting carries out explosion, and the clay of explosion groundwork weak intercalated layer 7 is carried out drawing digging place
Reason；Trapezoidal sand drift 9 can be arranged before explosion outside the laying scope of blast hole 8, observe sand drift shape conversion situation, detection after explosion
Static blasting vibrating effect, that is, detect the impact to No. I concrete dam joint basis 4 having poured for the explosion；
4 as shown in figure 4, dig the ground weak intercalated layer after process 7 back filled foundation concrete plug 10 to drawing, and pours No. II and mixes
Solidifying earth dam joint basis 5, carries out dam foundation curtain respectively on No. I concrete dam joint basis 4 and No. II concrete dam joint basis 5
Curtain grouting 6, until joint basis in dam is located at below water barrier.
In the present embodiment, the foundation plane width on No. I concrete dam joint basis 4 and No. II concrete dam joint basis 5 divides
Wei not 10m.
Claims (2)
1. the processing method on the bad basis of a kind of concrete dam joint, described concrete dam joint arrangement in the side of highway (1),
No. I concrete dam joint basis (4) including next-door neighbour's highway (1) and adjacent No. II concrete dam joint basis (5), its feature
It is that the process step of this concrete dam joint is as follows：
A, the local excavation carrying out highway slope and being close to No. I concrete dam joint basis (4) of highway, form after excavation
Soil property is risen steeply, and side slope (2) is upper to spray the thick plain concrete (3) of 20cm；
B, pour No. I concrete dam joint basis (4), after concrete reaches and pours age, carry out No. II concrete dam joint
The excavation of basic (5), discloses the ground weak intercalated layer (7) under No. I concrete dam joint basis (4), and this interlayer occurrence is slow to incline
Downstream, inclination angle is 20～35 °；
C, laying blast hole (8) in No. I concrete dam joint basis (4) peripheral extent, after small pit goaf controlled blasting, draw and dig out
The clay of ground weak intercalated layer (7), and arrange trapezoidal sand drift (9) outside the laying scope of blast hole (8)；
D, to drawing ground weak intercalated layer (7) the back filled foundation concrete plug (10) digging after process, pour No. II concrete dam joint
Basic (5), carry out curtain grouting in foundation of dam on No. I concrete dam joint basis (4) and No. II concrete dam joint basis (5)
(6), up to below basic relative water resisting layer.
2. a kind of bad basis of concrete dam joint according to claim 1 processing method it is characterised in that：Described I
The foundation plane width of number concrete dam joint basis (4) and No. II concrete dam joint basic (5) is respectively 10-20m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510393700.6A CN105040724B (en) | 2015-07-02 | 2015-07-02 | A kind of bad basic processing method of concrete dam joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510393700.6A CN105040724B (en) | 2015-07-02 | 2015-07-02 | A kind of bad basic processing method of concrete dam joint |
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| Publication Number | Publication Date |
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| CN105040724A CN105040724A (en) | 2015-11-11 |
| CN105040724B true CN105040724B (en) | 2017-03-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020068118A (en) * | 2001-02-20 | 2002-08-27 | (주)한석엔지니어링건축사사무소 | Protecting Structure of Concrete Caisson |
| CN200978430Y (en) * | 2006-12-07 | 2007-11-21 | 中国水电顾问集团华东勘测设计研究院 | Concrete dam joint structure |
| CN101603299A (en) * | 2009-07-02 | 2009-12-16 | 中国水电顾问集团华东勘测设计研究院 | A kind of broken line type dam joint structure and job practices thereof |
| CN201433386Y (en) * | 2009-07-02 | 2010-03-31 | 中国水电顾问集团华东勘测设计研究院 | Broken-line type dam joint structure |
| CN102619196A (en) * | 2012-04-18 | 2012-08-01 | 中国水电顾问集团中南勘测设计研究院 | Connector of concrete dam and earth dam in coastal wide river valley region |
-
2015
- 2015-07-02 CN CN201510393700.6A patent/CN105040724B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020068118A (en) * | 2001-02-20 | 2002-08-27 | (주)한석엔지니어링건축사사무소 | Protecting Structure of Concrete Caisson |
| CN200978430Y (en) * | 2006-12-07 | 2007-11-21 | 中国水电顾问集团华东勘测设计研究院 | Concrete dam joint structure |
| CN101603299A (en) * | 2009-07-02 | 2009-12-16 | 中国水电顾问集团华东勘测设计研究院 | A kind of broken line type dam joint structure and job practices thereof |
| CN201433386Y (en) * | 2009-07-02 | 2010-03-31 | 中国水电顾问集团华东勘测设计研究院 | Broken-line type dam joint structure |
| CN102619196A (en) * | 2012-04-18 | 2012-08-01 | 中国水电顾问集团中南勘测设计研究院 | Connector of concrete dam and earth dam in coastal wide river valley region |
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| Publication number | Publication date |
|---|---|
| CN105040724A (en) | 2015-11-11 |
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