CN104847010B - A kind of miniature groundwater reservoir in city and construction method - Google Patents

A kind of miniature groundwater reservoir in city and construction method Download PDF

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CN104847010B
CN104847010B CN201510127541.5A CN201510127541A CN104847010B CN 104847010 B CN104847010 B CN 104847010B CN 201510127541 A CN201510127541 A CN 201510127541A CN 104847010 B CN104847010 B CN 104847010B
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刘汉龙
丁选明
瞿立明
肖杨
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Chongqing University
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Abstract

本发明公开了一种城市微型地下水库。由埋置于地下的多个储水池组成,储水池与市政雨水排水管道相连,微型水库位于城市道路辅道和绿化带下方;道路上及道路周边的雨水可以通过排水管流入水库;下雨时,雨水可通过排水管流入微型水库储存;储水池侧面1/4到1/3以上范围设置微小孔洞,使微型水库中的水可以缓慢渗入地基土体,补充地下水,改善地下水环境。本发明还公开了该微型地下水库的施工方法。本发明的微型地下水库可以缓解市政雨水排水管道的压力,提高城市用水能力,还可以补充地下水,改善地下水环境,具有较好的社会效益和良好的生态价值。

The invention discloses an urban miniature underground water reservoir. It consists of multiple storage tanks buried in the ground. The storage tanks are connected to the municipal rainwater drainage pipes. The micro reservoirs are located under the urban road auxiliary roads and green belts; the rainwater on the road and around the road can flow into the reservoir through the drainage pipes; when it rains , Rainwater can flow into the micro-reservoir through the drainage pipe for storage; micro holes are set on the side of the reservoir from 1/4 to 1/3, so that the water in the micro-reservoir can slowly infiltrate into the foundation soil, replenish groundwater, and improve the groundwater environment. The invention also discloses a construction method of the miniature underground water reservoir. The miniature underground reservoir of the invention can relieve the pressure of municipal rainwater drainage pipes, improve urban water use capacity, supplement groundwater, improve the groundwater environment, and has good social benefits and good ecological value.

Description

一种城市微型地下水库及施工方法A kind of urban miniature underground water reservoir and its construction method

技术领域technical field

本发明属于市政工程领域,特别涉及一种与雨水排水管道相连的城市微型地下水库及施工方法。The invention belongs to the field of municipal engineering, in particular to an urban miniature underground reservoir connected with a rainwater drainage pipe and a construction method.

背景技术Background technique

随着城市化规模越来越大,混凝土和沥青等硬质地面越来越多,雨水与地下水隔离越来越严重,由于城市扩大,城市排水管道直径也越来越大。暴雨时来不及排出造成内涝,严重时危及人民的生命及物质财产安全。如2012年年北京7.21特大暴雨,造成79人死亡房屋倒塌10660间,160.2万人受灾,经济损失116.4亿元。2014年5月深圳暴雨,导致当地出现约150处道路积水,20处片区发生内涝,5000多辆公交车无法正常运营,2000辆汽车被淹,深圳机场累计取消进出港航班近200个。With the increasing scale of urbanization, there are more and more hard surfaces such as concrete and asphalt, and the isolation between rainwater and groundwater is becoming more and more serious. Due to the expansion of cities, the diameter of urban drainage pipes is also increasing. When the rainstorm is too late to discharge, it will cause waterlogging, and when it is serious, it will endanger people's lives and material property safety. For example, in 2012, the torrential rain in Beijing on July 21 caused 79 deaths and 10,660 houses collapsed, 1.602 million people were affected, and the economic loss was 11.64 billion yuan. In May 2014, the heavy rain in Shenzhen caused about 150 local roads to accumulate water, 20 areas were flooded, more than 5,000 buses could not operate normally, 2,000 cars were flooded, and Shenzhen Airport canceled nearly 200 inbound and outbound flights.

另一方面,城市地下水日益下降,城市缺水日益严重,尤其是北方城市。2014,全国657个城市有300多个“缺水”,严重缺水城市有100多个。官方数据显示,河北省水资源严重短缺,全省多年平均水资源总量205亿立方米。人均水资源量307立方米,为全国平均水平的1/7,远低于国际公认的500立方米的极度缺水标准。截至今年1月底,北京市平原区地下水平均埋深与上年同期相比,地下水位下降0.3米,地下水储量减少1.5亿立方米;与超采前的1998年同期相比,地下水位下降12.83米,地下水储量减少65亿立方米。此外,北京地下已经形成面积约1000平方公里的地下水降落漏斗区。On the other hand, urban groundwater is declining day by day, and urban water shortage is becoming more and more serious, especially in northern cities. In 2014, there were more than 300 "water shortages" in 657 cities across the country, and more than 100 cities with severe water shortages. According to official data, Hebei Province suffers from a severe shortage of water resources, with the province's annual average water resources totaling 20.5 billion cubic meters. The per capita water resource is 307 cubic meters, which is 1/7 of the national average and far below the internationally recognized extreme water shortage standard of 500 cubic meters. As of the end of January this year, compared with the same period last year, the average buried depth of groundwater in the plain area of Beijing decreased by 0.3 meters, and groundwater reserves decreased by 150 million cubic meters; compared with the same period in 1998 before overexploitation, the groundwater level decreased by 12.83 meters , groundwater reserves decreased by 6.5 billion cubic meters. In addition, a groundwater funnel area of about 1,000 square kilometers has been formed underground in Beijing.

本发明之前的传统的雨水收集池没有与雨水排水管连通,只能轻微间接缓解排水管道压力,分担能力有限,在暴雨时不能快速高效地排空地表水;池底密封,不能向地下渗水,从而无法补充地下水,造成水资源浪费。炎热季节,因为过多的硬化地面导致地下水难以蒸发散热,阳光辐射聚集造成严重的热岛效应。此外还会引起地表沉降,路面下陷。因此,迫切需要研发一种既能解决城市暴雨洪灾、又能缓解北方城市旱情的地下微型水库技术。The traditional rainwater collection tank before the present invention is not connected with the rainwater drainage pipe, and can only slightly relieve the pressure of the drainage pipe indirectly, and the sharing capacity is limited, and the surface water cannot be quickly and efficiently drained during heavy rain; the bottom of the pool is sealed, and water cannot seep into the ground. Thereby it is impossible to replenish groundwater, resulting in waste of water resources. In the hot season, because too much hardened ground makes it difficult for groundwater to evaporate and dissipate heat, the accumulation of sunlight radiation causes a serious heat island effect. In addition, it will cause surface subsidence and road subsidence. Therefore, there is an urgent need to develop an underground micro-reservoir technology that can not only solve urban rainstorms and floods, but also alleviate the drought in northern cities.

发明内容Contents of the invention

本发明的目的在于克服传统雨水排水管道在暴雨时排水能力不足,地下水得不到补充,水资源浪费的缺陷,提出一种地下微型水库,该微型水库能有效缓解排水管道压力,防止城市洪涝灾害,并且使地下水得到补充,缓解城市缺水干旱。本发明的另一目的在于提供所述微型水库在实际市政排水工程中的施工方法。The purpose of the present invention is to overcome the shortcomings of traditional rainwater drainage pipes, such as insufficient drainage capacity during heavy rains, lack of replenishment of groundwater, and waste of water resources, and propose an underground micro-reservoir, which can effectively relieve the pressure of drainage pipes and prevent urban floods. , and the groundwater is replenished, alleviating urban water shortage and drought. Another object of the present invention is to provide a construction method of the micro-reservoir in an actual municipal drainage project.

本发明采用以下技术方案实现:The present invention adopts following technical scheme to realize:

一种微型地下水库,由埋置于地下的多个储水池组成,储水池与市政雨水排水管道相连,储水池顶面标高与雨水排水管道的中轴线齐平;微型水库位于城市道路辅道和绿化带下方;道路上及道路周边的雨水可以通过排水管流入水库;暴雨时,雨水可通过排水管自动流入微型水库储存,当水库中的水储存满之后,多余的水仍然从雨水排水管道排走;储水池中水体可以用于市政绿化浇灌、城市消防等;储水池侧面设置微小孔洞,使微型水库中的水可以缓慢渗入地基土体,补充地下水。A miniature underground reservoir, consisting of multiple storage tanks buried in the ground, the storage tanks are connected to municipal rainwater drainage pipes, and the elevation of the top surface of the storage tanks is flush with the central axis of the rainwater drainage pipes; Under the green belt; the rainwater on the road and around the road can flow into the reservoir through the drainage pipe; during heavy rain, the rainwater can automatically flow into the micro-reservoir through the drainage pipe for storage. When the water in the reservoir is full, the excess water is still drained from the rainwater drainage pipe Walk; the water body in the reservoir can be used for municipal greening irrigation, urban fire protection, etc.; small holes are set on the side of the reservoir, so that the water in the micro reservoir can slowly infiltrate into the foundation soil to replenish groundwater.

所述微型水库的水未储藏满时,从地面流入雨水排水管道的雨水优先进入微型水库储存,微型水库的水储藏满时,多余的水排走。When the water in the micro-reservoir is not full, the rainwater that flows into the rainwater drainage pipe from the ground is preferentially stored in the micro-reservoir, and when the water in the micro-reservoir is full, the excess water is drained away.

所述微型水库在地下有多个储水池与雨水排水管道相连,当某一储水池水量过多时可通过雨水排水管分摊到其他储水池。The micro-reservoir has a plurality of water storage tanks underground connected with rainwater drainage pipes, and when a certain water storage tank has too much water, it can be distributed to other water storage tanks through rainwater drainage pipes.

所述微型水库有抽水管道将几个水库连起来,可以同时将几个水库中的水抽到地面,供市政用水。The micro-reservoir has pumping pipelines to connect several reservoirs, and can simultaneously pump water from several reservoirs to the ground for municipal water supply.

所述微型水库四周用混凝土现浇,侧面设置微小的孔洞,孔洞用渗透性较小的粘土填充,使水能缓慢渗入地下。The surroundings of the micro-reservoir are cast in-situ with concrete, and tiny holes are arranged on the sides, and the holes are filled with clay with low permeability, so that water can slowly seep into the ground.

所述微型水库顶部有竖直的管道与道路中央隔离区下部相连。There is a vertical pipeline on the top of the micro-reservoir to be connected with the lower part of the central isolation zone of the road.

所述微型水库与雨水排水管道通过直连管和T型排水相连接。The micro-reservoir is connected with the rainwater drainage pipe through a straight pipe and a T-shaped drainage.

所述连管在与排水管道连接处安装有滤网,防止连管堵塞。The connecting pipe is equipped with a strainer at the joint with the drainage pipe to prevent the connecting pipe from being blocked.

微型水库是在工厂用玻璃钢预制成形的,侧面设置若干微小的孔洞,孔洞用渗透性较小的粘土填充,使水能缓慢渗入地下。The micro-reservoir is prefabricated with glass fiber reinforced plastics in the factory, and a number of tiny holes are set on the side. The holes are filled with clay with low permeability, so that water can slowly seep into the ground.

本发明还涉及微型地下水库的施工方法,包括以下步骤:The present invention also relates to a construction method for a miniature underground reservoir, comprising the following steps:

(1)进行地质勘探,测量放线,确定微型水库位置;(1) Carry out geological exploration, measure and set out lines, and determine the position of the miniature reservoir;

(2)开挖至设计深度,一般使水库底部低于雨水排水管道2-3m;(2) Excavate to the design depth, generally make the bottom of the reservoir 2-3m lower than the rainwater drainage pipe;

(3)安装模板,浇筑储水池混凝土,(预留连管孔洞,抽水管孔洞,水库侧壁孔洞)进行混凝土养护;(3) Install the formwork, pour the concrete of the storage tank, (reserve holes for connecting pipes, holes for pumping pipes, and holes for side walls of the reservoir) for concrete maintenance;

(4)混凝土养护28天强度合格后,在侧壁孔洞中塞粘土,且孔洞上部宜铺一层大粒径的砂石,防止粘土因水的冲刷而局部破坏;(4) After the concrete is cured for 28 days and the strength is qualified, clay is stuffed in the side wall hole, and a layer of large-sized sandstone should be laid on the upper part of the hole to prevent the clay from being partially destroyed by water erosion;

(5)排水管放线定位,依次安装滤网,T形排水管和直连管;(5) The drain pipe is set out and positioned, and the filter screen, T-shaped drain pipe and direct connection pipe are installed in sequence;

(6)重复(2)~(5)的步骤,直到把所有储水池与排水管之间用连管相连;(6) Repeat steps (2) to (5) until all water storage tanks and drain pipes are connected with connecting pipes;

(7)进行通水试验;(7) Carry out water test;

(8)安装抽水管道和水泵,并进行抽水测试;(8) Install the pumping pipeline and water pump, and conduct a pumping test;

(9)回填土至水库顶面,安装竖直连管,滤网;(9) Backfill soil to the top surface of the reservoir, install vertical connecting pipes and filter screens;

(10)回填土至路面高度,安装水库混凝土顶盖。(10) Backfill the soil to the height of the road surface, and install the concrete roof of the reservoir.

本发明的优点和效果在于:由于地下水库与雨水排水管道相连,所以暴雨时可以通过地下水库分流,大大提高了蓄洪能力;侧壁设置孔洞,库中水可以缓慢渗入地下,补充了地下水,可以缓解城市地下水短缺的压力;地下水库的水可以通过水泵抽出到地面,进行地面绿化植物的灌溉。本发明将城市不排水的混凝土和沥青等硬质地面变成可以“吸水”的“柔性”地面,从而解决了城市洪灾和干旱两个问题,使城市雨水“变害为利”。本发明施工过程简单,实施简便,在现有城市道路上改造只需封闭局部车道,其他车道可正常通行。The advantages and effects of the present invention are: since the underground reservoir is connected with the rainwater drainage pipe, it can be diverted through the underground reservoir during heavy rain, which greatly improves the flood storage capacity; the side wall is provided with holes, and the water in the reservoir can slowly infiltrate into the ground, supplementing the groundwater, and can Relieve the pressure of urban groundwater shortage; the water in the underground reservoir can be pumped to the ground through water pumps to irrigate the green plants on the ground. The present invention turns urban undrained concrete and asphalt and other hard grounds into "flexible" grounds that can "absorb water", thereby solving the two problems of urban floods and droughts, and turning urban rainwater into "benefits". The construction process of the invention is simple, and the implementation is simple and convenient. It only needs to close a part of the road for reconstruction on the existing urban road, and other lanes can pass normally.

下面结合附图对本发明的具体实施方式进行详细描述。本发明的保护范围并不以具体实施方式为限,而是由权利要求加以限定。Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The protection scope of the present invention is not limited by the specific embodiments, but by the claims.

附图说明Description of drawings

图1单个地下水库及雨水排水管道横断面图;Figure 1 is a cross-sectional view of a single underground reservoir and rainwater drainage pipeline;

图2地下微型水库管网布置图;Fig. 2 layout diagram of underground micro-reservoir pipe network;

图3道路横断面图;Figure 3 road cross section;

图4道路纵断面图;Figure 4 road profile;

图5地下水库立体图;Fig. 5 perspective view of underground reservoir;

图6地下水库正面示意图;Figure 6 is a schematic diagram of the front of the underground reservoir;

图7 T型排水管示意图;Figure 7 Schematic diagram of T-shaped drainage pipe;

图中:1:地下微型水库;2:T形排水管;3:水库底板孔;4:直连管;5:竖直连管;6:雨水排水总管;7:直抽水管;8:抽水弯连管;9:抽水泵;10:水泵房;11:机动车道;12:辅助道路;13:人行道;14:竖直雨水管;15:中央隔离带;16:地下水库顶盖;17:水库侧壁孔。In the figure: 1: Underground miniature reservoir; 2: T-shaped drainage pipe; 3: Reservoir bottom plate hole; 4: Direct connection pipe; 5: Vertical connection pipe; 6: Rainwater drainage main pipe; 7: Straight suction pipe; Elbow connecting pipe; 9: water pump; 10: water pump room; 11: motorway; 12: auxiliary road; 13: sidewalk; 14: vertical rainwater pipe; 15: central isolation belt; 16: underground reservoir roof; 17: reservoir side wall holes.

具体实施方式detailed description

如图1~图7所示,一种城市微型地下水库1,四周由混凝土现浇而成,微型地下水库1与直连管4连接后,然后与T形排水管2连接,T形排水管2另外两个方向则直接与雨水排水总管6连接;微型地下水库1通过竖直连管5伸入中央隔离带15,辅道12或人行道13底部;辅道12及人行道13上的雨水通过竖直雨水管14流入雨水排水总管6中汇入微型地下水库1;机动车道11上的水通过竖直连管5流入微型地下水库1;地下微型水库1在侧面1/4到1/3以上范围开有水库侧壁孔17,使微型地下水库1中的水可以渗入地下;在水泵房10安装水泵9后,微型水库中的水还可以通过直抽水管7和抽水弯连管8组成的抽水管网抽到地面;竖直连管5顶部有混凝土顶盖16,以保护车辆和行人安全,同时可供检修使用。As shown in Figures 1 to 7, an urban miniature underground reservoir 1 is surrounded by cast-in-place concrete. After the miniature underground reservoir 1 is connected with the direct connection pipe 4, it is then connected with the T-shaped drainage pipe 2, and the T-shaped drainage pipe 2. The other two directions are directly connected with the rainwater drainage main pipe 6; the miniature underground reservoir 1 extends into the central isolation zone 15 through the vertical connecting pipe 5, and the bottom of the auxiliary road 12 or sidewalk 13; the rainwater on the auxiliary road 12 and the sidewalk 13 passes through the vertical The straight rainwater pipe 14 flows into the rainwater drainage main pipe 6 and merges into the miniature underground reservoir 1; the water on the motorway 11 flows into the miniature underground reservoir 1 through the vertical connecting pipe 5; the underground miniature reservoir 1 is opened on the side 1/4 to 1/3 There are reservoir side wall holes 17, so that the water in the miniature underground reservoir 1 can infiltrate into the ground; after the water pump 9 is installed in the water pump house 10, the water in the miniature reservoir can also pass through the suction pipe formed by the straight suction pipe 7 and the suction bend connecting pipe 8 The net is pumped to the ground; the top of the vertical connecting pipe 5 has a concrete roof 16 to protect the safety of vehicles and pedestrians, and can be used for maintenance.

上述地下微型水库的施工方,有如下技术步骤:The construction side of above-mentioned underground micro-reservoir has following technical steps:

(1)对市政道路中央隔离带15进行勘探,这里不仅要对道路纵向进行勘探,也要对道路深度方向进行勘探。对已有勘探数据的市政道路,可以延用已有数据。(1) Prospecting the central isolation zone 15 of the municipal road, not only the longitudinal direction of the road, but also the depth direction of the road. For municipal roads with existing exploration data, the existing data can be extended.

(2)根据勘探资料,选择透水性较好土层作为水库位置,为便于安装管道,尽量使各水库纵向保持在一条线上,且相互间距在10~20m。(2) According to the exploration data, the soil layer with good water permeability is selected as the location of the reservoir. In order to facilitate the installation of pipelines, try to keep the reservoirs on a vertical line with a distance of 10-20m.

(3)微型地下水库1放线定位,开挖至设计深度。(3) The miniature underground reservoir 1 is set out and positioned, and excavated to the design depth.

(4)支模板,浇筑水库混凝土要注意预留连管孔洞,抽水管孔洞,侧壁及底板孔洞,养护。配混凝土时应在混凝土中掺入具有减水、缓凝及增加耐久性的外加剂,以及掺入适量的优质掺合料,如粉煤灰等,以改善混凝土的和易性,提高耐久性和抗渗性。(4) When supporting formwork and pouring reservoir concrete, attention should be paid to reserving holes for connecting pipes, holes for suction pipes, holes for side walls and bottom plates, and maintenance. When mixing concrete, admixtures with water-reducing, retarding and durability-enhancing properties should be added to the concrete, as well as an appropriate amount of high-quality admixtures, such as fly ash, to improve the workability and durability of the concrete. and impermeability.

(5)在水库侧壁孔17中塞粘土。选择级配较好的砂卵石铺在微型地下水库1底部,避免粘土因水冲刷而局部破坏,可以在粘土顶部铺一些粒径较大的砂卵石。(5) Clay is plugged in the side wall hole 17 of the reservoir. Choose sandy pebbles with better gradation to lay on the bottom of the miniature underground reservoir 1 to avoid local damage of the clay due to water scouring, and some sandy pebbles with larger particle sizes can be laid on the top of the clay.

(6)排水管放线定位,依次安装滤网,T形排水管2和直连管4。T型排水管2和直连管4应在施工前根据设计需要预制。接头的地方,应该用水泥砂浆和防水材料填实。(6) Set out the drainage pipe for positioning, install the filter screen, the T-shaped drainage pipe 2 and the direct connection pipe 4 in sequence. The T-shaped drainage pipe 2 and the direct connection pipe 4 should be prefabricated according to the design requirements before construction. Joints should be filled with cement mortar and waterproof materials.

(7)重复4~6的步骤,直到一组地下微型水库1与雨水排水总管6之间都有直连管4相连。每组地下微型水库1的数量,根据实际雨水排水管流量确定,一般为3~8一组。(7) Steps 4 to 6 are repeated until a group of underground micro-reservoirs 1 and the main rainwater drainage pipe 6 are connected with each other by a direct connection pipe 4 . The quantity of each group of underground micro-reservoirs 1 is determined according to the actual flow of rainwater drainage pipes, generally 3 to 8 groups.

(8)进行通水试验,往雨水排水总6管里通水,测试各个水库及其连管是否畅通,及时处理出现漏水的地方。(8) Carry out a water test, pass water into the 6 main rainwater drainage pipes, test whether each reservoir and its connecting pipes are unimpeded, and deal with the places where water leakage occurs in time.

(9)在确认各个水库与雨水排水总管6连接可靠,排水系统无漏水点以后,安装直抽水管7,抽水弯连管8和抽水泵9,并进行抽水测试。安装时先安装直抽水管7,尽量使直抽水管7与微型地下水库1接触,再安装抽水弯连管8,抽水弯连管8伸入地下微型水库1端部距离地下微型水库1底板不大于50~200mm。(9) After confirming that each reservoir is reliably connected to the rainwater drainage main pipe 6, and that the drainage system has no leaks, install the straight water pipe 7, the water bend connecting pipe 8 and the water pump 9, and perform a water pumping test. During installation, the straight water pipe 7 is installed earlier, and the straight water pipe 7 is contacted with the miniature underground reservoir 1 as far as possible, and then the water bend connecting pipe 8 is installed, and the water bend connecting pipe 8 stretches into the underground miniature reservoir 1. Greater than 50-200mm.

(10)回填土至微型地下水库1顶面,安装竖直连管5及滤网;11回填土至路面高度,安装微型地下水库顶盖16。(10) Backfill soil to the top surface of the miniature underground reservoir 1, install the vertical connecting pipe 5 and filter screen; 11 backfill the soil to the height of the road surface, install the miniature underground reservoir top cover 16.

实施例:Example:

参见图1,图中为某条道路的横断面示意图。该道路中间是中央隔离带15。中央隔离带15两侧是双向机动车道11。两个机动车道11的外侧均是辅助道路12。辅助道路12的外侧是人行道13。Referring to Figure 1, the figure is a schematic cross-sectional view of a certain road. In the middle of the road is the median strip 15 . Two-way motor vehicle lanes 11 are on both sides of the central isolation belt 15 . The outer sides of the two motor vehicle lanes 11 are auxiliary roads 12 . The outside of the auxiliary road 12 is a sidewalk 13 .

参见图3、5和6,图中所示为一个地下微型水库1。地下微型水库1由竖直连管5、侧壁和底板组成。所述底板是由混凝土浇筑成的。所述侧壁是由混凝土浇筑成的中空圆筒。所述中空圆筒的下端扣在所述底板的上表面。所述中空圆筒的上端封闭,但留有一个通孔,所述竖直连管5的下端管口与这个通孔连通。浇筑所述侧壁时,在侧壁上预留若干侧壁孔17。优选地,所述侧壁孔17中填充粘土。Referring to Figures 3, 5 and 6, an underground micro-reservoir 1 is shown in the figure. The underground micro-reservoir 1 is made up of a vertical connecting pipe 5, a side wall and a bottom plate. The base plate is made of concrete. The side wall is a hollow cylinder made of concrete. The lower end of the hollow cylinder is buckled on the upper surface of the bottom plate. The upper end of the hollow cylinder is closed, but a through hole is left, and the lower end nozzle of the vertical connecting pipe 5 communicates with this through hole. When pouring the side wall, a number of side wall holes 17 are reserved on the side wall. Preferably, the side wall holes 17 are filled with clay.

进一步地,所述中空圆筒的封闭上端,除了连接所述竖直连管5外,还具有一个抽水孔。如图4,抽水弯连管8的下端插入这个抽水孔中,并伸到中空圆筒的内腔的底部。抽水弯连管8的上端与直抽水管7连通。通过启动与直抽水管7相连的抽水泵9(安装在水泵房10中),可以将地下微型水库1的水抽出;或是向地下微型水库1中注水,以检查密闭性。Further, the closed upper end of the hollow cylinder, in addition to connecting the vertical connecting pipe 5, also has a water pumping hole. As shown in Fig. 4, the lower end of the suction bend connecting pipe 8 is inserted into the water suction hole, and extends to the bottom of the inner cavity of the hollow cylinder. The upper end of the water bend connecting pipe 8 communicates with the straight water pipe 7 . By starting the water pump 9 (installed in the water pump room 10) that is connected with the straight water pipe 7, the water in the underground micro-reservoir 1 can be extracted;

图1示意了设置的五个地下微型水库1。这些地下微型水库1的竖直连管5分别位于中央隔离带15下方、机动车道11与辅助道路12中间隔离带(或绿化带)下方、辅助道路12与人行道13中间隔离带(或绿化带)下方。竖直连管5上端出口安装有地下水库顶盖16。图2同样示意了设置的四个地下微型水库1。这些地下微型水库1的竖直连管5位于辅助道路12与人行道13中间隔离带(或绿化带)下方。Fig. 1 schematically shows five underground micro-reservoirs 1 set up. The vertical connecting pipes 5 of these underground micro-reservoirs 1 are respectively located below the median strip 15, below the median strip (or green belt) between the motorway 11 and the auxiliary road 12, and below the median strip (or green belt) between the auxiliary road 12 and the sidewalk 13. below. The outlet at the upper end of the vertical connecting pipe 5 is equipped with an underground reservoir top cover 16 . Fig. 2 also schematically shows four underground micro-reservoirs 1 set up. The vertical connecting pipes 5 of these underground micro-reservoirs 1 are located below the median strip (or green belt) of the auxiliary road 12 and the sidewalk 13 .

浇筑所述侧壁时,在侧壁上还预留有一个连接孔。直连管4的一个管口与这个连接孔连通。参见图3,所述直连管4是倾斜的,与所述连接孔相连的一端冲下。参见图7,图中所示为T形排水管2,这个T形排水管2具有三个管口(类似于三通)。参见图4,若干个地下微型水库1并排设置,每一个地下微型水库1连接均连接一个直连管4。这些直连管4的一个管口(倾斜向上的那个管口)均与一个T形排水管2相连。可以通过若干根管道,将这些T形排水管2未与直连管4相连的管口串联起来,组成雨水排水总管6。一般地,将3~8个地下微型水库1组合为一组(如图2、4那样串联了四个),通过管道,将一组所述的地下微型水库1的T形排水管2串联起来,组成雨水排水总管6。所述雨水排水总管6位于道路下方,与路面的排水设施相连通。本实施例中,施工时应当保证所有的管道可靠连接,不会漏水。When pouring the side wall, a connecting hole is also reserved on the side wall. A nozzle of the straight pipe 4 communicates with this connecting hole. Referring to FIG. 3 , the straight connecting pipe 4 is inclined, and the end connected to the connecting hole is flushed down. Referring to Fig. 7, a T-shaped drain pipe 2 is shown in the figure, and this T-shaped drain pipe 2 has three nozzles (similar to a tee). Referring to FIG. 4 , several underground micro-reservoirs 1 are arranged side by side, and each underground micro-reservoir 1 is connected to a straight pipe 4 . A mouthful of these straight pipes 4 (that pipe mouth that inclines upwards) all links to each other with a T-shaped drain pipe 2 . The mouths of these T-shaped drainage pipes 2 that are not connected to the straight pipe 4 can be connected in series through several pipes to form the main rainwater drainage pipe 6 . Generally, 3 to 8 underground micro-reservoirs 1 are combined into one group (four in series as shown in Figure 2 and 4), and the T-shaped drainpipes 2 of one group of described underground micro-reservoirs 1 are connected in series through pipelines , form the rainwater drainage main pipe 6. The rainwater drainage main pipe 6 is located below the road and communicates with the drainage facilities on the road surface. In this embodiment, during construction, it should be ensured that all pipelines are reliably connected without water leakage.

值得说明的是,这些地下微型水库1即为埋置于道路下的储水池。雨水排水总管6与市政雨水排水系统相连,地下微型水库1顶面标高与雨水排水总管6的中轴线齐平。暴雨时,雨水可通过市政排水管自动流入微型水库1储存。当微型水库1中的水储存满之后,多余的水仍然可以从市政雨水排水系统排走。微型水库1中水体可以用于市政绿化浇灌、城市消防等。由于水库侧壁孔17的存在,使微型水库1中的水可以缓慢渗入地基土体,补充地下水。由于多个所述微型水库1是相连的,当某一个微型水库1储水量过多时,可通过雨水排水管分摊到其他储水池。It is worth noting that these underground micro-reservoirs 1 are water storage tanks buried under roads. The rainwater drainage main pipe 6 is connected with the municipal rainwater drainage system, and the elevation of the top surface of the underground micro-reservoir 1 is flush with the central axis of the rainwater drainage main pipe 6 . During heavy rain, rainwater can automatically flow into the micro-reservoir 1 for storage through municipal drainage pipes. When the water in the micro-reservoir 1 is full, the excess water can still be drained from the municipal rainwater drainage system. The water body in the micro-reservoir 1 can be used for municipal greening watering, urban fire fighting and the like. Due to the existence of the reservoir side wall holes 17, the water in the miniature reservoir 1 can slowly infiltrate into the foundation soil to supplement the groundwater. Because a plurality of said micro-reservoirs 1 are connected, when a certain micro-reservoir 1 stores too much water, it can be apportioned to other water storage pools through rainwater drainage pipes.

Claims (3)

1. the miniature groundwater reservoir in a kind of city, it is characterised in that:It is made up of several tanks with top cover for being embedded in underground, Tank is connected with municipal rain drainage pipe, and tank top surface absolute altitude is flushed with the axis of rain drainage pipe;Miniature water Warehouse compartment is below the auxiliary road of urban road and greenbelt;On road and the rainwater of road periphery flows into reservoir by drainpipe;Rain When, rainwater automatically flows into miniature reservoir storage by drainpipe, and after the water storage in reservoir is full, unnecessary water is still from rain Water drainage pipeline is drained;In tank, water body is used for municipal greening irrigation, urban fire control;Tank side arranges small hole, Part water body in miniature reservoir slowly penetrates foundation soil, and recharge of groundwater improves groundwater environment;
When the water of miniature reservoir does not store full, the rainwater for flowing into municipal rain drainage pipe preferentially enters miniature reservoir storage, micro- When the water storage of type reservoir is full, unnecessary water is drained;
Miniature reservoir there are multiple tanks to be connected with rain drainage pipe in underground, when a certain tank hypervolia, lead to Cross rainwater drainage pipe and share other tanks;
Miniature reservoir tank has removable top cover, is extracted out the water in tank for municipal greening irrigation with water pump when needing;
Miniature reservoir surrounding concrete cast-in-situ, side arrange some small holes, and the less clay of hole permeability is filled out Fill, allow the water to slowly penetrate underground.
2. the miniature groundwater reservoir in a kind of city according to claim 1, it is characterised in that:Miniature reservoir is in factory's glass The prefabricated shaping of glass steel, side arranges some small holes, and the hole less clay filled of permeability allows the water to slowly ooze Enter underground.
3. a kind of construction method of the miniature groundwater reservoir in city according to claim 1, comprises the following steps:
(1) geological prospecting is carried out, and surveying setting-out determines that Miniature water warehouse compartment is put below the auxiliary road of urban road and greenbelt;
(2) projected depth is excavated to, typically makes reservoir bottom be less than rain drainage pipe 2-3m;
(3) installation form, pours tank concrete, and reserving hole carries out concrete curing;
(4), after 28 days intensity of concrete curing is qualified, clay is filled in the hole of side, and hole top spreads the sand of one layer of big particle diameter Stone, prevents clay local failure because of washing away for water;
(5) drainpipe unwrapping wire positioning, installs filter screen, T-shaped drainpipe and direct-connected pipe successively;
(6) the step of repeating (2)~(5), until being connected with connecting leg between all tanks and drainpipe;
(7) water test is carried out;
(8) pumping conduit and water pump are installed, and carry out test of drawing water;
(9) backfill installs vertical connecting leg, filter screen to reservoir top surface;
(10) backfill installs reservoir concrete top cover to pavement-height.
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