阅读说明：本技术 一种新型止水盖板结构及其施工方法 (A kind of novel water-stop covering plate structure and its construction method ) 是由 徐耀 李蓉 李敬玮 孟川 刘思源 于 2019-09-20 设计创作，主要内容包括：本发明公开了水利水电工程领域的一种新型止水盖板结构及其施工方法,包括对称设置的盖板,盖板两侧的下侧面均设有若干凸起,盖板通过胶粘剂层粘接在面板混凝土层的表面上,盖板的内侧填充有塑性填料层,面板混凝土层上开有V型的接缝槽,接缝槽内放置实心的橡胶棒,改善盖板与面板混凝土的连接方式,附着力强,施工工艺简单,对面板混凝土不造成二次损伤,且在寒冷地区的水位变动区无膨胀螺栓冻胀脱落风险,新型止水盖板结构可以与混凝土形成良好的结合,进行快速高效的连接,可有效提高止水能力,规范化施工工艺,极大地改善最终止水效果,加快施工进程和提高施工质量。(The invention discloses a kind of novel water-stop covering plate structure in hydraulic and hydroelectric engineering field and its construction methods, including symmetrically arranged cover board, the downside of cover board two sides is equipped with several protrusions, cover board is bonded on the surface of panel concrete layer by gluing oxidant layer, the inside of cover board is filled with plastic filler layer, the seam slot of V-type is provided on panel concrete layer, solid rubber bar is placed in seam slot, improve the connection type of cover board and panel concrete, adhesive force is strong, construction technology is simple, secondary damage is not caused to panel concrete, and it falls off risk in the fluctuation of water table area of cold district without expansion bolt frost heave, novel water-stop covering plate structure can form good combination with concrete, carry out connection rapidly and efficiently, sealing ability can be effectively improved, normalized construction technique, significantly improve final water-stagnating effect, quickening construct into Journey and raising construction quality.)

1. a kind of novel water-stop covering plate structure, it is characterised in that: including symmetrically arranged cover board, the downside of cover board two sides is all provided with There are several protrusions, the cover board is bonded on the surface of panel concrete layer by gluing oxidant layer, the inside filling of the cover board There is plastic filler layer, the seam slot of V-type is provided on the panel concrete layer, places solid rubber bar in the seam slot.

2. a kind of novel water-stop covering plate structure according to claim 1, it is characterised in that: the connection between the cover board is adopted With overlap joint or the connection type of docking.

3. a kind of novel water-stop covering plate structure according to claim 1, it is characterised in that: the cover board with a thickness of 5- 10mm, the cover board are that EPDM plate, rubber slab, PVC roll material, composite rubber plate are one such.

4. a kind of novel water-stop covering plate structure according to claim 1, it is characterised in that: the cover board include arc section and Horizontal segment, the protrusion are located at the downside of horizontal segment, are smoothly connected between the arc section and horizontal segment by bending section.

5. a kind of novel water-stop covering plate structure according to claim 1, it is characterised in that: the spacing of the protrusion is 3- 5mm, the shape of the protrusion is wide in the narrow bottom in top, and bottom be it is rectangular, round or oval, the height of the protrusion is 5-6mm, raised overhead height are 2-3mm, and width 3-4mm, raised bottom level is 3-4mm, width 4-5mm.

6. a kind of novel water-stop covering plate structure according to claim 1, it is characterised in that: the gluing oxidant layer uses polyureas Material or epoxy material.

7. a kind of construction method of novel water-stop covering plate structure, it is characterised in that: comprising the following specific steps

S1: the loosening concrete block of the panel concrete layer first contacted with putty knife, brushing with filler, at out-of-flatness Dabbing, cleaning, repairing are answered, then is polished with dust storm rifle, leveling；

S2: the seam slot internal plug on panel concrete layer fills out rubber bar, and then plastic filler layer is segmented in insertion preformed groove, And blade coating pass is determined according to design thickness in panel concrete layer uniform brushing adhesive adhesive layer with the scraper plate with tooth form, and apply The width and thickness of daub adhesive layer wrap up bulge-structure；

S3: cover board is symmetrically placed along the center line of plastic filler layer, cover board and panel concrete layer, lid are bonded through gluing oxidant layer Plate sprawls smooth, uniform stressed, and slowly squeezes from middle part to both sides, is beaten in fact with rubber hammer, air therein is discharged；

S4: using dock or overlapped that mode connects between cover board and cover board, the side of cold bonding method or thermal bonding is used between connector Formula connection.

8. a kind of construction method of novel water-stop covering plate structure according to claim 7, it is characterised in that: the step S4 In, strap joint is connected using cold bonding method, specific steps are as follows: connector pre-bonding position is polished, it is each to retain cover board original thickness Half, cleaning cover board by viscous face, it is dry after brushing adhesive adhesive layer bond.

9. a kind of construction method of novel water-stop covering plate structure according to claim 7, it is characterised in that: the step S4 In, strap joint is connected using thermal bonding, specific steps are as follows: the strap joint water that will be preheated under the conditions of temperature is 50 DEG C or so In sulfurator after laying flat preheating, it is put into raw rubber in cover board end middle, tightens pressurization bolt, pressure with torque-indicating wrencg Reaching the rear reheating pressure plate of 1.5MPa or so makes its temperature rise to 150 DEG C, lasting to clamp about 20min until being firmly bonded, so The fastening bolt for unclamping sulfurator afterwards, takes out cover board from sulfurator, completes bonding after naturally cooling to room temperature.

Technical field

The present invention relates to hydraulic and hydroelectric engineering technical field, specially a kind of novel water-stop covering plate structure and its construction party Method is suitable for concrete face rockfill dam seam surface watertight seal.

Background technique

Concrete face rockfill dam is widely adopted with its economy and safety all over the world, and is increasingly becoming height The preferred dam type on dam and heavy construction.The sealing of dam, the sealing of especially slab joint are one of the critical issue in engineering, thing Close safety, service life and the economical operation of dam.

Traditional water sealing structure of concrete face rockfill dam face slab for water retaining seam is usually to be made of three sealings, i.e. bottom metal Sealing piece, intermediate PVC plastic or rubber fastening band and surface layer plasticity filleting sealing, in recent years mostly mention intermediate waterstop to table Layer is changed to twice water sealing structure.Slab joint surface watertight seal is the key link of first of seepage prevention system of dam, if it is any Link leaks, while when the Transition Materials of dam rockfill act on failure to the support of bedding material, filter protection, bedding material Seepage failure will occur under the seepage effect of certain head, bedding material is caused to be lost, form gradually widened seepage channel, Cause face slab dislocation, collapse, finally influence entire dam body stablizes safety.

In the design of slab joint surface watertight seal, it is typically employed in plasticity filleting sealing surface setting protective cover plate.China Flexible waterproof sheet is generallyd use at present as protective cover plate, there are commonly EPDM plate, rubber slab, PVC roll materials and compound Rubber slab etc..Since EPDM plate has good ageing-resistant and high and low temperature resistance, at present using more cover board or again Closing lid plate surface layer is EPDM plate.

Traditional sealing cover board fixed step is more complex, generallys use expansion bolt and angle steel or band steel is fixed, while in face Aperture on plate forms secondary destruction to panel, and interface is more vulnerable to the erosion of extraneous factor, reduces its mechanical property and durable Performance, and cover board two sides are not easy to be compacted, and easily form sealing weak spot, water level of the expansion bolt sealing fixing piece in cold district Fluctuation zone falls off risk there are frost heave, and the effect of antiseepage is finally not achieved.

Based on this, the present invention devises a kind of novel water-stop covering plate structure and its construction method, make cover board preferably with it is mixed Solidifying soil panel combines, and enhances water seepage prevention effect, mentioned above to solve the problems, such as.

Summary of the invention

The purpose of the present invention is to provide a kind of novel water-stop covering plate structure and its construction method, improves cover board and panel is mixed The connection type of soil is coagulated, adhesive force is strong, and construction technology is simple, does not cause secondary damage to panel concrete, and in cold district Fluctuation of water table area fall off risk without expansion bolt frost heave.Novel water-stop covering plate structure can form good knot with concrete It closes, carries out connection rapidly and efficiently, sealing ability can be effectively improved, normalized construction technique significantly improves final sealing effect Fruit accelerates construction progress and improves construction quality, to solve the problems mentioned in the above background technology.

To achieve the above object, it the invention provides the following technical scheme: a kind of novel water-stop covering plate structure, including symmetrically sets The downside of the cover board set, the cover board two sides is equipped with several protrusions, and the cover board is bonded in panel coagulation by gluing oxidant layer On the surface of soil layer, the inside of the cover board is filled with plastic filler layer, and the seam of V-type is provided on the panel concrete layer Slot, the seam slot is interior to place solid rubber bar.

Preferably, the connection between the cover board is using overlap joint or the connection type of docking.

Preferably, the thickness of the cover board is usually 5-10mm, and the cover board is EPDM plate, rubber slab, PVC roll Material, composite rubber plate are one such.

Preferably, the cover board includes arc section and horizontal segment, and the protrusion is located at the downside of horizontal segment, the circular arc It is smoothly connected between section and horizontal segment by bending section.

Preferably, the spacing of the protrusion is 3-5mm, and the shape of the protrusion is wide in the narrow bottom in top, and bottom is side Shape, circle or ellipse, the height of the protrusion are 5-6mm, and raised overhead height is 2-3mm, width 3-4mm, convex The bottom level risen is 3-4mm, width 4-5mm.

Preferably, adhesive intensity, the viscosity of the gluing oxidant layer use need to reach defined requirement, and curing time is full Foot construction needs, and it is epoxies, polyureas that type, which can be selected,.

A kind of construction method of novel water-stop covering plate structure, comprising the following specific steps

S1: the loosening concrete block of the panel concrete layer first contacted with putty knife, brushing with filler, to injustice Dabbing, cleaning, repairing are answered by whole place, then are polished with dust storm rifle, leveling；

S2: the seam slot internal plug on panel concrete layer fills out rubber bar, then that the segmentation insertion of plastic filler layer is reserved In slot, and blade coating pass is determined according to design thickness in panel concrete layer uniform brushing adhesive adhesive layer with the scraper plate with tooth form, And smear the width and thickness package bulge-structure of gluing oxidant layer；

S3: cover board is symmetrically placed along the center line of plastic filler layer, cover board and panel concrete are bonded through gluing oxidant layer Layer, cover board sprawls smooth, uniform stressed, and slowly squeezes from middle part to both sides, is beaten in fact with rubber hammer, air therein is arranged Out；

S4: using dock or overlapped that mode connects between cover board and cover board, using cold bonding method or thermal bonding between connector Mode connect.

Preferably, in the step S4, strap joint is connected using cold bonding method, specific steps are as follows: by connector pre-bonding position It polishes, each half for retaining cover board original thickness, cleaning cover board is by viscous face, and brushing adhesive adhesive layer bonds after drying.

Preferably, in the step S4, strap joint is connected using thermal bonding, specific steps are as follows: will be 50 DEG C in temperature The strap joint level preheated under the conditions of left and right is put into the sulfurator after preheating, is put into raw rubber in cover board end middle, Pressurization bolt is tightened with torque-indicating wrencg, pressure, which reaches the rear reheating pressure plate of 1.5MPa or so, makes its temperature rise to 150 DEG C, continues Until being firmly bonded, then the fastening bolt of release sulfurator, takes out cover board from sulfurator clamping about 20min, naturally cold But to completion bonding after room temperature.

Compared with prior art, the beneficial effects of the present invention are: novel water-stop covering plate structure of the invention and its construction party Method, structure is simple, easy for construction, cost is relatively low, reliable and stable, effectively improves conventional cover plate and panel concrete connectivity not Enough close problems, at the same eliminate panel cracking failure risk and expansion bolt sealing fixing piece cold district water Position fluctuation zone frost heave falls off risk, and water seepage prevention effect is better than the water-stagnating effect of conventional cover plate, and to different regions difference work Condition it is adaptable, can be used for the water seepage prevention of all kinds of concrete face rockfill dams.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.

Fig. 1 is novel water-stop covering plate structure schematic diagram of the present invention；

Fig. 2 is novel water-stop covering plate structure partial schematic diagram of the present invention.

In attached drawing, parts list represented by the reference numerals are as follows:

1, cover board；11, arc section；12, horizontal segment；13, bending section；2, raised；3, gluing oxidant layer；4, panel concrete Layer；5, plastic filler layer；6, seam slot；7, rubber bar.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other Embodiment shall fall within the protection scope of the present invention.