阅读说明：本技术 一种网格增强复合结构埋地井及其制作方法 (Grid-reinforced composite structure buried well and manufacturing method thereof ) 是由 时强 谈健康 汤学红 吴循 戴云 尹继国 朱广伟 羌宇 杨正国 于 2020-07-08 设计创作，主要内容包括：一种网格增强复合结构埋地井,该埋地井井体采用纤维增强树脂基复合材料构成,其壁厚包括由内至外依次设置的内衬层、内结构层、网格加强筋层、外结构层和外防护层,网格加强筋层位于内结构层和外结构层之间,包括多股交叉缠绕在内结构层上缠绕纱束,本发明一种网格增强复合结构埋地井强度高、使用寿命长、适用范围广泛,与砖砌结构井筒、混凝土结构井筒、环向加筋玻璃钢井筒相比,刚度更大,有效避免由于覆土外压造成的筒体失稳,由于网格增强层空隙率可达50％,节约原材料,造价更低,经济效益十分可观。(A kind of grid strengthens the composite construction and buries the ground well, this buries the ground well body and adopts the resin matrix composite material to form of fibre reinforcement, its wall thickness includes the inside liner, inner structure layer, grid reinforcement layer, outer structure layer and outer protective layer set up sequentially from inside to outside, the grid reinforcement layer locates between inner structure layer and outer structure layer, including the strand cross twines and twines the yarn bunch on the inner structure layer, a kind of grid strengthens the composite construction and buries the ground well intensity high, have long performance life, application scope are extensive, compared with the pit shaft of brick structure, concrete structure pit shaft, hoop reinforcement glass fibre reinforced plastic pit shaft, the rigidity is bigger, avoid the barrel because of covering the external pressure to cause unstability effectively, because the grid reinforcement layer void ratio can reach 50%, save raw materials, the fabrication cost is lower, the economic benefits is very considerable.)

1. The utility model provides a net reinforcing composite construction buries ground well which characterized in that: the buried well wall thickness comprises an inner liner layer, an inner structure layer, a grid reinforcing rib layer, an outer structure layer and an outer protective layer which are sequentially arranged from inside to outside, wherein the grid reinforcing rib layer comprises a plurality of winding yarn bundles which are crossly wound on the inner structure layer.

2. A grid reinforced composite structure subterranean well according to claim 1, wherein: the well body of the buried well is made of fiber reinforced resin matrix composite materials.

3. A grid reinforced composite structure subterranean well according to claim 1, wherein: the diameter of a well bore of the buried well is 500mm-5000mm, and the wall thickness is 10mm-100 mm.

4. A grid reinforced composite structure subterranean well according to claim 1, wherein: the thickness of the grid reinforcing rib layer is 2mm-50 mm.

5. A grid reinforced composite structure subterranean well according to claim 1, wherein: the angle formed by the cross winding yarn bundles and the axis of the well body is 40-70 degrees, and the distance between two adjacent parallel winding yarn bundles is 10-200 mm.

6. A grid reinforced composite structure subterranean well according to claim 1, wherein: the manufacturing method of the buried well comprises the following steps:

1) preparing a mould, and coating a release agent on the mould or laying a plastic film on the surface of the mould;

2) winding the lining layer and the inner structure layer on the mould;

3) winding yarn bundles arranged at intervals on the inner structure layer to form a grid reinforced layer;

4) winding an outer structural layer and an outer protective layer on the grid reinforcing layer;

5) and demolding after the well body is solidified.

Technical Field

The invention belongs to the field of municipal inspection wells and pump station wells, and particularly relates to a grid reinforced composite structure buried well and a manufacturing method thereof.

Background

The grid reinforced composite structure buried well is mainly used in the fields of inspection wells, pump station wells and the like in pipeline engineering. The existing shaft is mainly of a brick structure, a concrete structure or a prefabricated glass fiber reinforced plastic shaft. The brick structure and the concrete structure have large excavation space, long construction period, easy corrosion and limited service life.

In recent years, factory prefabricated glass fiber reinforced plastic integrated inspection wells and pump station wells are rapidly developed, and traditional bricking structure shafts and concrete structure shafts are gradually replaced in partial fields. The integrated prefabricated pump station well is prefabricated in a factory by adopting fiber reinforced plastic composite materials, has the obvious advantages of corrosion resistance, short construction period, long service life and the like, but the cost of raw materials of the glass fiber reinforced plastic is far higher than that of bricks and concrete, so that the thickness of the manufactured well wall is only 1/10 of a brick structure and a concrete structure, even thinner, and the elastic modulus of the glass fiber reinforced plastic is lower and is only 1/16 of steel. Under the action of temperature load, earth covering pressure and underground water pressure, the glass fiber reinforced plastic shaft is easy to generate instability damage, and huge economic loss is caused. To address this difficulty, circumferential ribbing or corrugating the wellbore is often employed to increase wellbore stiffness. However, the annular reinforcing ribs are easily layered with the cylinder under the condition of external pressure, the annular reinforcing ribs cannot increase the rigidity, the manufacturing process of the corrugated shaft is complicated, and the inner cylinder is not a smooth surface, so that the installation and the maintenance of equipment are not facilitated.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide an underground well which takes resin as a base material and uses grid reinforcing ribs and a manufacturing method of the underground well.

The purpose of the invention is realized by adopting the following technical scheme. According to the buried well with the grid reinforced composite structure, the buried well wall thickness comprises an inner lining layer, an inner structure layer, a grid reinforcing rib layer, an outer structure layer and an outer protective layer which are sequentially arranged from inside to outside, and the grid reinforcing rib layer comprises a plurality of winding yarn bundles which are crossly wound on the inner structure layer.

Furthermore, the well body of the buried well is made of fiber reinforced resin matrix composite materials.

Furthermore, the diameter of a well bore of the buried well is 500mm-5000mm, and the wall thickness is 10mm-100 mm.

Furthermore, the thickness of the grid reinforcing rib layer is 2mm-50 mm.

Furthermore, the angle formed by the winding yarn bundles which are wound in the cross way and the axis of the well body is 40-70 degrees, and the distance between two adjacent parallel winding yarn bundles is 10-200 mm.

Further, the manufacturing method of the buried well comprises the following steps:

1) preparing a mould, and coating a release agent on the mould or laying a plastic film on the surface of the mould;

2) winding the lining layer and the inner structure layer on the mould;

3) winding yarn bundles arranged at intervals on the inner structure layer to form a grid reinforced layer;

4) winding an outer structural layer and an outer protective layer on the grid reinforcing layer;

5) and (6) demolding. By means of the technical scheme, the invention has the advantages that: the grid reinforced composite structure underground well has the advantages of high strength, long service life and wide application range, has higher rigidity compared with a brick structure shaft, a concrete structure shaft and a circumferential reinforced glass fiber reinforced plastic shaft, effectively avoids the instability of a cylinder body caused by external pressure of covering soil, has the porosity of a grid reinforcing layer of 50 percent, saves raw materials, has lower manufacturing cost and has considerable economic benefit.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a grid reinforced composite structure buried well according to the present invention.

Fig. 2 is a schematic diagram of a method for manufacturing a reinforcing rib in a grid reinforced composite structure buried well according to the invention.

[ reference numerals ]

1-mould axis, 2-lining layer, 3-inner structure layer, 4-grid reinforcing rib layer, 5-outer structure layer, 6-outer protective layer and 7-winding yarn bundle.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to a grid reinforced composite structure buried well and its manufacturing method, its specific implementation, structure, features and effects according to the present invention, with reference to the accompanying drawings and preferred embodiments.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.

Referring to fig. 1 and 2, a grid-reinforced composite structure buried well, the well body is made of fiber-reinforced resin matrix composite, has high rigidity, excellent external pressure resistance, simple production process and convenient industrial application. The buried well wall thickness comprises an inner lining layer 2, an inner structure layer 3, a grid reinforcing rib layer 4, an outer structure layer 5 and an outer protective layer 6 which are sequentially arranged from inside to outside, the diameter of a well shaft of the buried well is 500mm-5000mm, and the wall thickness is 10mm-100 mm; the inner liner layer 2 is arranged on the innermost layer of the buried well and has the function of seepage prevention; inner liner 2 is outer for inner structure layer 3, and net strengthening rib layer 4 is located between inner structure layer 3 and outer structure layer 5, and inner structure layer 3 produces and directly produces net after accomplishing with rib layer 4, and then produces outer structure layer 5, and the production process is continuous, and the wholeness is good. The outer structure layer 5 plays a role in leveling the outer wall of the buried well and enhancing the strength and rigidity of the well body; the grid reinforcing rib layer 4 is formed by directly and crossly winding a plurality of winding yarn bundles 7 on the inner structure layer 3, so that the well body has a circular section, the winding yarn bundles 7 are unidirectional fiber bundles serving as a reinforcing material, the thickness of the grid reinforcing rib layer 4 in the embodiment is 2mm-50mm, the angle formed between the crossly wound winding yarn bundles 7 and the axis of the well body is 40-70 degrees, the distance between two adjacent parallel winding yarn bundles 7 is a, the a in the embodiment is 10mm-200mm, the rigidity of a shaft is greatly improved by grid reinforcement, the void ratio of the grid reinforcing rib layer 4 can reach 50 percent, and the material cost is reduced. An outer protective layer 6 is further arranged outside the outer structural layer 5, and the outer protective layer 6 has the functions of corrosion prevention and seepage prevention and can protect the buried well.

The invention relates to a method for manufacturing a grid reinforced composite structure buried well, which comprises the following steps:

1. preparing a mould, and coating a release agent on the mould or laying a plastic film on the surface of the mould;

2. winding an inner liner layer 2 and an inner structural layer 3 on the mould through a shaft winding machine;

3. adjusting the uniform arrangement of the multiple winding yarn bundles 7 to be discontinuous arrangement and continuously winding on the inner structural layer 3 to form a grid reinforced layer 4;

4. winding an outer structural layer 5 and an outer protective layer 6 on the grid reinforcing layer 4;

5. and demolding after the shaft is solidified.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.