CN202416360U

CN202416360U - Safe inspection well structure

Info

Publication number: CN202416360U
Application number: CN2011205527516U
Authority: CN
Inventors: 贾世鹏; 王朝华; 周越; 樊小华; 李志文; 陈小平; 帅品峰; 章敏
Original assignee: JIANGXI ZHONGLIAN CONSTRUCTION GROUP CO Ltd
Current assignee: JIANGXI ZHONGLIAN CONSTRUCTION GROUP CO Ltd
Priority date: 2011-12-27
Filing date: 2011-12-27
Publication date: 2012-09-05
Anticipated expiration: 2021-12-27

Abstract

The utility model discloses a safe inspection well structure, which is characterized in that a well cover is covered on a well seat opening, a prefabricated concrete well ring is arranged above a wellhole, the inner ring of the wellhole and the inner ring of the prefabricated concrete well ring are provided with a well wall, the upper of the prefabricated concrete well ring is fixed with the well seat through a supporting body, a sandstone layer is paved in the gap of the outer ring of the prefabricated concrete well ring and the outer ring of the well seat, a concrete layer an asphalt player are sequentially paved on the upper surface of the sandstone layer from bottom to top, the inner ring of the prefabricated well ring is provided with lifting hooks, and the lifting hooks are hung with an anti-dropping net. The inspection well structure provided by the utility model has the advantages that the problems of inspection well deformation, sinking of road and well combination part, well cover dropping, and the like can be effectively reduced, and the maintenance cost can be saved; and when the well cover of the inspection well drops or is stolen, as the nylon rope anti-dropping net is arranged under the well cover of the inspection well, the safety of an inspection well can be effectively improved.

Description

Safety type manhole structure

Technical field

The utility model relates to a kind of manhole structure, particularly safety type manhole structure.

Technical background

Manhole is the vertical shaft of on the underground utilities position, building at a certain distance.The main pipeline that supplies service conduits, removing mud to reach in order to connect different directions, differing heights uses.Tradition manhole structure, way often adopts earlier and paves, the back secondary that cuts installation, paves paves old-fashioned way, twice moulding in road surface, manhole joint portion and adjacent road surface.Simultaneously; Because of receiving reasons such as execution conditions, rainy season precipitation, based process, geological conditions and protection pipeline, when the large tracts of land operation, road roller is difficult to roll and puts in place in the work progress of present many manholes joint portion; Road surface, Lu Jing joint portion compactness does not meet designing requirement; And manhole periphery road surface bears higher impact force, shearing force because the vertical load of vehicle causes, thereby the destruction of aggravation manhole and the sedimentation on peripheral road surface thereof make the manhole periphery produce phenomenons such as be full of cracks, sedimentation.Earth and foreign material are fallen in the well easily on the ground, make pipeline be difficult to normal draining, also can influence ground pedestrian, vehicle and other movable safety and comfortable, when serious even cause human casualty accident.

Summary of the invention

In view of above present situation, the purpose of the utility model is to be with the basis of job practices improving traditional manhole structure, makes road inspection well when the normal draining of pipeline or pipeline use and do not influence earth construction, plays the effect of guard rows people life safety.

The technical scheme of the utility model is; Safety type manhole structure, well seat flap is equipped with well lid, and the pit shaft top is equipped with prefabricated concrete walling crib; The inner ring of pit shaft and prefabricated concrete walling crib is provided with the borehole wall; The top of prefabricated concrete walling crib is fixed with the well seat through supporter, and the gap, outer ring of prefabricated concrete walling crib and well seat is equipped with sand stone layer, is equipped with layer of concrete and bitumen layer above the sand stone layer from bottom to top successively.

The inner ring of said prefabricated concrete walling crib is provided with suspension hook, and suspension hook hangs with anti-fall net.

The beneficial effect of the utility model is effectively to reduce problems such as manhole is out of shape, the Lu Jing joint portion sinks, well lid comes off, and practices thrift maintenance cost; When the manhole well lid occurs coming off or is stolen, because the anti-fall net of nylon rope is set one, therefore, can effectively improve the safety of manhole under the manhole well lid, avoid the generation of the manhole phenomenon of " eating the people ".

Description of drawings

Fig. 1 is the cross-sectional view of the utility model.

Fig. 2 is the sketch map of prefabricated concrete walling crib 3 among Fig. 1.

Fig. 3 is the A-A place sectional view of prefabricated concrete walling crib 3 among Fig. 2.

Among the figure: 1, well seat, 2, supporter, 3, prefabricated concrete walling crib, 4, pit shaft, 5, the borehole wall, 6, suspension hook, 7, anti-fall net, 8, well lid, 9, bitumen layer, 10, layer of concrete, 11, sand stone layer.

The specific embodiment

Combine accompanying drawing that the utility model is described further at present, referring to Fig. 1 to Fig. 3, safety type manhole structure; Well seat 1 flap is equipped with well lid 8; Pit shaft 4 tops are equipped with prefabricated concrete walling crib 3, and the inner ring of pit shaft 4 and prefabricated concrete walling crib 3 is provided with the borehole wall 5, and the top of prefabricated concrete walling crib 3 is fixed with well seat 1 through supporter 2; The gap, outer ring of prefabricated concrete walling crib 3 and well seat 1 is equipped with sand stone layer 11, is equipped with layer of concrete 10 and bitumen layer 9 above the sand stone layer 11 from bottom to top successively.The inner ring of said prefabricated concrete walling crib 3 is provided with suspension hook 6, and suspension hook 6 hangs with anti-fall net 7.

Its construction is: 1) cut out loosening the soil of manhole and joint portion, road surface; 2) mix system sandstone material; 3) fill out the sanding building stones in the joint portion; 4) mend rammer jolt ramming; 5) anti-fall net is installed on prefabricated drop hanger.

This worker method is fixed on manhole well seat on the walling crib through the prefabricated reinforced concrete walling crib, and manhole periphery road surface and adjacent road surface are once formed, and can effectively avoid problems such as manhole periphery pavement depression.Simultaneously loosening the soil in manhole and joint portion, the road surface 40cm scope cut out, change to fill out and mix the good sandstone material of grating that makes in advance, generally should adopt 6% rendzinas, or sand, stone flour, can not use ratchel near the borehole wall; And (self is simple to operate to utilize goat's horn rammer or tablet vibrator; Applying flexible and volume features of smaller); Successively to mending rammer jolt ramming in the 1m scope around the manhole Lu Jing joint portion; The thick compacting of every shop 30cm once can be tamped best compactness to guarantee the dead angle area backfill that urban road manhole Zhou Bianlu well joint portion exists.Pre-buried 8 band hook built-in fittings are used to install the anti-fall net of nylon rope on the prefabricated reinforced concrete walling crib.Compare with the standard collective drawings manhole; Installation can be damaged under broken, displacement or stolen etc. the situation by excessive load at the manhole well lid by the anti-fall net of nylon rope braiding; Preventing that pedestrian or vehicle etc. from crashing into causes accident in the well; Can prevent that also the road surface foreign material from falling into well and influencing the normal draining of pipeline, when dredging inspection shaft clearly, can protective screening be pulled down simultaneously.

The utility model is on the one hand through the prefabricated reinforced concrete walling crib; Manhole well seat is fixed on the walling crib; Manhole periphery road surface and adjacent road surface are once formed; And strengthen compacting to manhole Lu Jing joint portion backfill, guarantee that manhole Lu Jing joint portion road compactness reaches designing optimal compactness and consistent with manhole Lu Jing joint portion road surface compactness in addition; At 30 ㎝ places below original well lid the anti-fall net of nylon rope is installed on the other hand, is played the effect of guard rows people life safety and the normal draining of pipeline.

The utility model is applicable to push pipe pipe diameter 700mm≤D≤1200mm, and well depth 7m can not be suitable for for exceptional well and threeway, four-way manhole with interior ordinary straight line style rain, the construction of sewage manhole.

Claims

1. safety type manhole structure; Well seat (1) flap is equipped with well lid (8); It is characterized in that; Pit shaft (4) top is equipped with prefabricated concrete walling crib (3), and the inner ring of pit shaft (4) and prefabricated concrete walling crib (3) is provided with the borehole wall (5), and the top of prefabricated concrete walling crib (3) is fixed with well seat (1) through supporter (2); The gap, outer ring of prefabricated concrete walling crib (3) and well seat (1) is equipped with sand stone layer (11), is equipped with layer of concrete (10) and bitumen layer (9) above the sand stone layer (11) from bottom to top successively.

2. according to the said safety type manhole of claim 1 structure, it is characterized in that the inner ring of said prefabricated concrete walling crib (3) is provided with suspension hook (6), suspension hook (6) hangs with anti-fall net (7).