阅读说明：本技术 一种用于混凝土面板堆石坝表层止水的止水带及止水结构 (A waterstop and stagnant water structure for concrete panel rock-fill dam top layer stagnant water ) 是由 姚良学 吴洪亮 崔俊虎 陈建新 丁国珍 于 2019-11-07 设计创作，主要内容包括：本发明公开了一种用于混凝土面板堆石坝表层止水的止水带及止水结构,包括一体成型的橡胶止水带、橡胶棒、橡胶塞。通过整合一体的止水带,减少了止水现场施工的一道施工工序,避免传统波浪形止水带施工时对底部橡胶棒的干扰；同时将传统的圆形橡胶棒改为梯形并且底部连接一与分缝等宽的矩形塞子,有效的保证橡胶棒与混凝土面板结构的吻合,减小传统橡胶棒大范围的错动,有效避免橡胶棒与面板脱离后造成防渗效果的降低。梯形橡胶棒设计时其顶部做成预制拱结构,保证了上游渗水压力作用在橡胶棒上的力通过拱形结构有效的传递到开槽的混凝土上,梯形橡胶棒的两边做成与混凝土面板开槽坡度一致,并通过高聚合物结构胶与V型槽两边粘结,增加了止水的一道安全储备。(The invention discloses a water stop belt and a water stop structure for stopping water on the surface layer of a concrete panel rock-fill dam. By integrating the integral water stop belt, a construction process of water stop site construction is reduced, and the interference of the traditional wave-shaped water stop belt on a bottom rubber rod during construction is avoided; simultaneously change traditional circular rubber stick into trapezoidal and the bottom connect one with the equidistant width's of parting rectangle stopper, effectual assurance rubber stick and concrete panel structure coincide, reduce the dislocation on a large scale of traditional rubber stick, effectively avoid rubber stick and panel to break away from the reduction that causes the prevention of seepage effect after breaking away from. When the trapezoidal rubber rod is designed, the top of the trapezoidal rubber rod is made into a prefabricated arch structure, the force of the upstream water seepage pressure acting on the rubber rod is effectively transmitted to the grooved concrete through the arch structure, the two sides of the trapezoidal rubber rod are made to be consistent with the groove gradient of the concrete panel, the trapezoidal rubber rod is bonded with the two sides of the V-shaped groove through high polymer structural adhesive, and one safe storage of water stopping is increased.)

1. The utility model provides a waterstop that is used for concrete panel rock-fill dam top layer stagnant water which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the cross section of the rubber rod is trapezoidal;

the rubber waterstops comprise first wavy waterstops, and the first waterstops of the two rubber waterstops are connected with two ends of the longer bottom edge of the trapezoidal section of the rubber rod respectively;

the rubber plug is rectangular in cross section, and one side of the rectangle is connected with the bottom side with shorter length in the trapezoidal cross section of the rubber rod;

the rubber rod, the rubber waterstop and the rubber plug are integrally formed.

2. The water stop for surface sealing of concrete panel rock-fill dams of claim 1, wherein: and the two rubber water stops and the rubber rod are positioned on the same straight line when not influenced by external force.

3. The water stop for surface sealing of concrete panel rock-fill dams of claim 1, wherein: and the two rubber water stops are symmetrical left and right relative to the rubber rod.

4. The water stop for surface sealing of concrete panel rock-fill dams of claim 1, wherein: the side length of the joint of the rubber plug and the rubber rod is equal to the side length of the shorter bottom side in the trapezoidal section of the rubber rod.

5. The water stop for surface sealing of concrete panel rock-fill dams of claim 1, wherein: the surface corresponding to the longer bottom side in the trapezoidal section of the rubber rod is arched.

6. The water stop for surface sealing of concrete panel rock-fill dams of claim 1, wherein: the slopes of two waists in the trapezoidal section of rubber rod are the same with the slope of concrete panel V type groove.

7. The water stop for surface sealing of concrete panel rock-fill dams of claim 1, wherein: the width of the rectangular cross section of the rubber plug is consistent with the width of the parting.

8. The utility model provides a stagnant water structure that is used for concrete panel rock-fill dam top layer stagnant water which characterized in that: including the waterstop, two surfaces that the waist corresponds in the trapezoidal cross-section of rubber rod of waterstop are hugged closely with V type groove surface, in the rubber buffer embedding seam of waterstop, two rubber waterstops of waterstop are terminal to be passed through the bolt and to be linked to each other with concrete structure.

9. The water stopping structure for surface water stopping of a concrete panel rock-fill dam as claimed in claim 8, wherein: the surfaces of the rubber rod corresponding to the two waists in the trapezoidal section are bonded with the two sides of the V-shaped groove through high polymer structural adhesive.

10. The water stopping structure for surface water stopping of a concrete panel rock-fill dam as claimed in claim 9, wherein: the bonding strength between the rubber rod and the two sides of the V-shaped groove is less than the tensile strength of the rubber rod.

Technical Field

The invention relates to a concrete panel rock-fill dam surface water stop structure, in particular to a water stop belt structure in the water stop structure, and belongs to the field of structural design of hydraulic and hydroelectric engineering.

Background

The performance of the water stopping structure and the material is a key factor for the normal operation of the dam, and the concrete panel rock-fill dam at present mainly comprises surface water stopping, middle water stopping and bottom water stopping according to different water stopping distribution positions, wherein the surface water stopping and the bottom water stopping are relatively convenient to construct and maintain and are relatively more widely applied. The surface water stop is used as the first water stop in direct contact with a water body, and the quality of the surface water stop is directly important for an anti-seepage system of the whole dam.

The existing surface water stop is mainly shown in figure 1, and the structure of the existing surface water stop mainly comprises a surface composite cover plate 1, a plastic filler 2, a rubber water stop 10, an asphalt impregnated shirt plate 9 (such as an asphalt impregnated shirt plate with the thickness of 12mm, and asphalt emulsion with the thickness of 5mm is coated on a seam surface) and a PVC rubber rod 11 for supporting. Although the existing water stopping construction technology tends to be mature, the surface water stopping materials are more in appearance, small and miscellaneous, and the construction is relatively complicated, for example, the internal traditional rubber water stopping belt 10 needs to be fixed with the stainless steel flat steel 3 through the stainless steel expansion bolt 4, the position of the internal PVC rubber rod 11 is not fixed, the joint with the panel is easy to dislocate under the action of water pressure, a gap is generated, and certain potential safety hazards are brought, so that the research of a firmer structure is very necessary.

Disclosure of Invention

The invention aims to provide a water stop belt and a water stop structure for stopping water on the surface layer of a concrete panel rock-fill dam, which can avoid the interference of a wavy water stop belt on a bottom rubber rod during construction, avoid the interference of the traditional wavy water stop belt on the bottom rubber rod during construction, effectively reduce the large-scale dislocation of the rubber rod, effectively transfer the load action of top seepage water, avoid the reduction of the seepage-proofing effect after the rubber rod is separated from a panel, and improve the binding force of the water stop belt and the panel.

The technical scheme of the invention is as follows:

a water stop for stopping water on the surface layer of a concrete face rockfill dam comprises,

the cross section of the rubber rod is trapezoidal;

the rubber waterstops comprise first wavy waterstops, and the first waterstops of the two rubber waterstops are connected with two ends of the longer bottom edge of the trapezoidal section of the rubber rod respectively;

the rubber plug is rectangular in cross section, and one side of the rectangle is connected with the bottom side with shorter length in the trapezoidal cross section of the rubber rod;

the rubber rod, the rubber waterstop and the rubber plug are integrally formed.

Preferably, the two rubber water stops and the rubber rod are positioned on a straight line when not subjected to external force.

Preferably, the two rubber water stops are symmetrical left and right relative to the rubber rod.

Preferably, the length of side of rubber buffer and rubber stick junction equals the length of the shorter base side length in the trapezoidal cross-section of rubber stick.

Preferably, the surface corresponding to the longer bottom side in the trapezoidal section of the rubber rod is arched.

Preferably, the slopes of two waists in the trapezoidal section of rubber rod are the same with the slope of concrete panel V type groove.

Preferably, the width of the rectangular cross section of the rubber plug is consistent with the width of the parting.

The utility model provides a stagnant water structure for concrete panel rock-fill dam top layer stagnant water, includes the waterstop, and the surface that two waists correspond in the trapezoidal cross-section of rubber stick of waterstop is hugged closely with V type groove surface, and in the rubber buffer embedding seam of waterstop, two rubber waterstops of waterstop were terminal to pass through the bolt and to link to each other with concrete structure.

Preferably, the surfaces corresponding to the two waists in the trapezoidal section of the rubber rod are bonded with the two sides of the V-shaped groove through high polymer structural adhesive.

Preferably, the bonding strength of the rubber rod and the two sides of the V-shaped groove is smaller than the tensile strength of the rubber rod.

One structural characteristic of the water stop of the invention is that: the initial states of the wavy rubber water stop and the rubber rod are linear, and the initial states refer to the states of the wavy water stop and the rubber rod when the wavy water stop and the rubber rod are not under the action of external force. The other structural characteristic is that: the surface of the rubber rod is in a prefabricated arch shape.

According to the invention, the traditional wave-shaped rubber waterstop and the rubber rod are integrated, and the rectangular rubber plug structure is added at the bottom of the rubber rod, so that the processing and forming of three structures are completed in a factory, a construction procedure of waterstop site construction is reduced, and the interference of the traditional wave-shaped waterstop on the bottom rubber rod during construction is avoided; meanwhile, the traditional circular rubber rod is changed into a trapezoid, the bottom of the traditional circular rubber rod is connected with a rectangular rubber plug which is as wide as a parting seam, the rubber rod can be effectively ensured to be matched with a concrete panel structure, the large-scale dislocation of the traditional rubber rod is reduced, and the reduction of the anti-seepage effect caused by the separation of the rubber rod and the panel is effectively avoided. In addition, when the rubber rod with the trapezoidal section is designed, the top of the rubber rod is made into a prefabricated arch structure, the force of the upstream water seepage pressure acting on the rubber rod can be effectively transmitted to the grooved concrete through the arch structure, the two sides of the trapezoidal rubber rod are made to be consistent with the groove gradient of the concrete panel, and the high polymer structural adhesive is bonded with the two sides of the V-shaped groove (the bonding strength is smaller than the tensile strength of the trapezoidal water stop belt), so that one safe storage of water stop is increased.

When the water stop belt is used as a water stop structure, the interference of the traditional wave-shaped water stop belt to the bottom rubber rod during construction is avoided, meanwhile, the bottom rectangular rubber plug can effectively reduce the large-scale dislocation of the rubber rod, the top prefabricated arch structure can effectively transfer the top seepage load effect, and the reduction of the seepage-proofing effect caused by the separation of the rubber rod and the panel is avoided. The bonding between the trapezoidal rubber rod and the V-shaped groove is increased, and the trapezoidal rubber rod and the wavy rubber index belt are connected with each other through the bolts and the concrete V-shaped groove to supplement each other.

Compared with the prior art, the invention provides a novel waterstop structure for stopping water on the surface layer of a concrete panel rock-fill dam, which has the advantages that:

(1) the construction process is simplified: the wavy rubber water stop, the rubber rod and the rubber plug can be processed and formed in a factory, and the construction process of the rubber rod and the wavy water stop can be simplified into one process on site.

(2) Reducing construction interference: because this structure has simplified the construction process, can avoid traditional construction process upper portion wave waterstop to the influence of bottom rubber stick when laying, avoid the rubber stick dislocation.

(3) Safe and reliable: the wave-shaped water stop belt and the rubber rod can be processed and formed at one time in a factory, connection of the joints is ensured, the rubber rod is arranged in the wave-shaped water stop belt, the wave-shaped water stop belt is restrained at two ends, the rectangular rubber plug is restrained at the bottom, the possibility that the rubber rod is greatly dislocated can be avoided, and the safety of the dam is ensured.

(4) Dispersed transmission osmotic pressure action: the top of the trapezoidal rubber rod is made into a prefabricated arch structure, and the pressure of the seepage water borne by the trapezoidal rubber rod can be dispersed and transmitted to the two sides of the concrete V-shaped groove.

(5) The two sides of the trapezoidal rubber rod are connected with the two sides of the V-shaped groove through high polymer structural adhesive, so that potential safety hazards caused by poor sealing of the two sides of the wave-shaped rubber water stop can be prevented.

(6) Economic and environment-friendly: compared with the traditional wave-shaped water stop belt and rubber rod separated structure, the structure can reduce the material consumption by 12.5 percent under the same size standard, and is more favorable for environmental protection.

Drawings

FIG. 1 is a schematic diagram of a conventional surface water stop structure;

FIG. 2 is a schematic view of the novel waterstop of the present invention;

FIG. 3 is a schematic view of the surface water stop structure of the present invention;

in the figure, 1: a surface layer composite cover plate; 2: a plastic filler; 3: stainless steel flat steel; 4: an expansion bolt; 5: a rubber waterstop; 6: a rubber rod; 7: a rubber plug; 8: a high polymer structural adhesive; 9: a fir board; 10: a conventional rubber waterstop; 11: a rubber rod.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made based on the common technical knowledge and conventional means in the art without departing from the technical idea of the present invention are included in the scope of the present invention.

As shown in fig. 3, the novel water stopping structure for stopping water on the surface layer of the concrete-faced rockfill dam in this embodiment includes a surface layer composite cover plate 1, a plastic filler 2, a stainless steel flat steel 3, a stainless steel expansion bolt 4, a water stopping strip, a high polymer structural adhesive 8, and a cedar wood plate 9.

As shown in fig. 2, the water stop in this embodiment is formed by combining a rubber water stop 5 with a wave-shaped structure, a rubber rod 6 with a trapezoidal cross-section structure, and a rubber stopper 7 with a rectangular cross-section, the thickness of the rubber water stop 5 is 10mm, and the rubber water stop includes a first water stop part with a wave-shaped structure and a straight line part connected with the first water stop part, the tail end of the straight line part is connected with the trapezoidal part, the gradient of the trapezoidal part is 1:1, and the length of the lower bottom is 24 mm. The upper bottom of the rubber rod 6 with the trapezoidal section structure is 20mm wide, the lower bottom is 100mm wide, the two side edges are 1:1 gradient and 60mm high, and the lower bottom (the top in figure 2) is made into a prefabricated arch shape; the rubber stopper 7 with the rectangular section is arranged at the upper bottom (the bottom in figure 2), the width and the height are both 20mm, the rubber stopper 6 with the larger trapezoidal section and the rubber stopper 7 with the rectangular section are arranged in the middle of the wavy rubber water stop 5, the two sides of the rubber water stop 5 are symmetrically arranged, namely, the two rubber water stops 5 with the wavy structure are symmetrical left and right relative to the rubber stopper 6, and before the rubber water stop 5 with the wavy structure and the rubber stopper 6 are used, the rubber water stop 5 and the rubber stopper 6 are in a linear initial state, as shown in figure 2. When the rubber plug is used, the rubber plug 7 with the rectangular cross section is embedded into the seam connecting groove before the plastic filler 2 is plugged, two sides of the rubber rod 6 with the trapezoidal cross section are bonded with two sides of the V-shaped groove, and the asphalt fir board 9 is filled in the seam.

As a conventional option, the width of the combined structure of the rubber water stop 5 with the wave-shaped structure, the rubber rod 6 with the trapezoidal section and the rubber plug 7 with the rectangular section is 400mm, and the combined structure can be properly adjusted according to the size of the groove and the size of the rubber rod 6.

The straight line parts at the two ends of the rubber water stop belt 5 are firmly fixed on the concrete grooving surface by the stainless steel flat steel 3 through the expansion bolts 4, the two sides of the rubber rod 6 with the trapezoidal section are bonded on the grooving surface through the high polymer structural adhesive 8, the cleaning of scum and the like on the grooving surface is ensured before bonding, and the ends of all stainless steel flat steel 3 pressing strips are polished smoothly to avoid stabbing the surface layer composite cover plate 1.