CN109505287B - Underground water collecting, transporting and storing gallery suitable for campaigns in North China mountain area - Google Patents
Underground water collecting, transporting and storing gallery suitable for campaigns in North China mountain area Download PDFInfo
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- CN109505287B CN109505287B CN201910026076.4A CN201910026076A CN109505287B CN 109505287 B CN109505287 B CN 109505287B CN 201910026076 A CN201910026076 A CN 201910026076A CN 109505287 B CN109505287 B CN 109505287B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 230000000903 blocking effect Effects 0.000 claims abstract description 60
- 238000003860 storage Methods 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000002023 wood Substances 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 238000006424 Flood reaction Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 20
- 239000010410 layer Substances 0.000 description 6
- 239000004575 stone Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000003973 irrigation Methods 0.000 description 3
- 230000002262 irrigation Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000003621 irrigation water Substances 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241001553290 Euphorbia antisyphilitica Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 239000011148 porous material Substances 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
- E02B5/082—Closures
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Abstract
A water collecting, transporting and storing gallery suitable for a candela type underground water collection in North China mountain area relates to the technical field of candela type underground galleries, and comprises a blocking structure, a flood discharging channel, an underdrain, a vertical shaft, a control valve, an output channel and a water storage pool, wherein at least five blocking structures are arranged in the whole valley flow area along the water flow direction of the valley, the vertical shaft is communicated with the underdrain, and a first vertical shaft is arranged at the downstream of the first blocking structure; the reservoir is divided into a first reservoir and a second reservoir; the underdrain is arranged at the subsurface, and the water outlet end of the underdrain is connected with the first reservoir through the output channel; the flood discharge channel is communicated with the first reservoir through the output channel; the control valve is arranged at the inlet of the reservoir, the outlet of the reservoir, the junction of the underdrain and the output channel and the junction of the underdrain and the vertical shaft. The invention solves the problem of water shortage in mountain areas and has the functions of blocking and diverting at the same time, thereby playing the role of controlling small and medium-sized floods and debris flow ditches.
Description
Technical Field
The invention relates to the technical field of candela well type underground galleries, in particular to a candela well type underground water collecting, transporting and storing gallery suitable for North China mountain areas.
Background
Through investigation of mountain areas in the North China, a large number of dam sites are constructed for recovering vegetation and preventing water and soil loss, and economic crops are planted. However, there are many places, although rainfall is enough, the mountain is still lack of water, so that irrigation and planting from the mountain to the mountain are needed, and the method is not economical, time-consuming and labor-consuming, and is not a long-term scheme for solving the problems. In order to solve the problem of water shortage, reservoirs become the most important hydraulic engineering for guaranteeing urban life, industrial and agricultural water supply. With the perfection of the construction technology of the dam, the surface reservoir is also made into a very mature hydraulic engineering, however, the mountain engineering area has a deep coverage layer, a large amount of river sediment, poor topography conditions and the like, which are unsuitable for constructing the surface reservoir, and if the surface reservoir is adopted on the river, the investment is very huge. Water resources inherent in the surface reservoirs have also been invaluable by ineffective evaporative leakage losses, silt and ecological environmental problems generated. The underground reservoir has the advantages of small occupied area, large storage capacity, small investment, small evaporation loss, no triggering of landslide collapse of a storage side slope, safety, reliability and the like, but has great exploration difficulty, needs harsh geological conditions, needs good underground water storage media (a layered pore aquifer, a large-scale water-containing fracture zone, a large-scale karst water storage space and the like), is difficult to control in underground water level, has great management difficulty and the like. The construction cost is less than that of the surface reservoir, but the construction cost is also a great financial expenditure for a small village. Meanwhile, the mountain area of China is wide, centralized prevention and treatment are necessary for the large-harm gullies, but small gullies cannot be left at will, multiple gullies are good, the gullies are not long, the area of the river basin is small, large harm cannot occur, the gullies are also affected by flood and debris flow, some gullies are not harmful at present, and the gullies cannot be considered to be harmful.
Disclosure of Invention
The invention aims to provide a water collecting, water delivering and storing gallery suitable for a campaigns underground in North China mountain areas, which is used for solving the problem of water shortage in mountain areas and has the functions of blocking and shunting so as to treat small and medium-sized floods and debris flow ditches.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a water collecting, transporting and storing gallery suitable for use in a campaigns underground in north China, comprising: the system comprises a blocking structure, a flood discharging channel, an underdrain, a vertical shaft, a control valve, an output channel and a water storage tank, wherein at least five channels of blocking structures are arranged in the whole valley flow field along the water flow direction of the valleys, each channel of blocking structure is arranged from the left bank of the valleys to the right bank of the valleys, and the first channel of blocking structure is arranged at the position of the valleys, which is close to the source gradient of the valleys, and continuously changes by more than 20 degrees; the vertical shafts are communicated with the underdrain, and a first vertical shaft is arranged at the downstream of the first blocking structure; the water reservoirs are divided into a first water reservoir and a second water reservoir, and the first water reservoir is communicated with the second water reservoir through an output channel; the underdrain is arranged at the subsurface, and the water outlet end of the underdrain is connected with the first reservoir through the output channel; the flood discharge channel is communicated with the first reservoir through the output channel; the control valve is arranged at the inlet of the reservoir, the outlet of the reservoir, the junction of the underdrain and the output channel and the junction of the underdrain and the vertical shaft.
Preferably, the blocking structure adopts gabions or wooden stake fences.
Preferably, five blocking structures are arranged along the water flow direction of the gullies, the distance between two adjacent blocking structures is 5 m-10 m, the first blocking structure and the second blocking structure adopt gabions, and the distance between two adjacent gabions arranged in the same blocking structure is 1 m-2 m; the third blocking structure adopts a wood pile fence, and the interval between two adjacent wood piles is 0.5m; the fourth blocking structure adopts a wood pile fence, and the interval between two adjacent wood piles is 0.2m; the fifth blocking structure adopts a wood pile fence, and the interval between two adjacent wood piles is 5 cm-10 cm.
Preferably, the underdrain is disposed at a slope of 3 ° to 5 ° from upstream to downstream of the gully.
Further, at least one underdrain is disposed below the subsurface.
Preferably, the cross-sectional shape of the underdrain is square or round.
Further, the last shaft is arranged in the range of 20 m-60 m of the valley outlet.
Further, a shaft is arranged at the junction of the main trench and the branch trench of the valley.
Preferably, the width of the wellhead of the vertical shaft is 1.5 m-2.5 m, and the depth is 3 m-10 m.
Preferably, the longitudinal gradient of the output channel is smaller than the longitudinal gradient of the ground and is arranged perpendicular to the ground contour.
Through the design scheme, the invention has the following beneficial effects:
1. the invention combines underground water storage with campaigns, and integrates irrigation water and domestic water. The water storage structure is dispersed into the vertical shafts in the valley flow area and the water reservoirs in villages, so that the requirements on geological conditions are low, the construction investment is low, the environmental impact is small, and the surface evaporation can be effectively reduced. The underground ditch for well digging and shallow surface layer construction has low technical content, low cost, low risk and easy management. Meanwhile, the water resource can be accurately and effectively utilized.
2. The invention can reduce the runoff flow at the bottom of the ditch in stormwater by the functions of the vertical shaft in the valley flow area and the underground underdrain, and further reduce the flow velocity of water flow. On one hand, the flood water can be effectively utilized and the problem of uneven space-time distribution of the water resources can be reduced by dividing and storing the flood water; on the other hand, the possibility of occurrence of or damage to a large part of the flood debris flow can be reduced.
In summary, the underground water collecting, water conveying and storing gallery suitable for the campaigns in North China mountain areas has the functions of blocking and splitting while solving the problem of water shortage in mountain areas, thereby playing a role in treating small and medium-sized floods and debris flow ditches.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a undue limitation of the invention, in which:
FIG. 1 is a schematic plan layout of an underground water collection, water delivery and storage gallery suitable for a North China mountain area campaigns in an embodiment of the invention.
FIG. 2 is an enlarged view of a portion of the water delivery and storage facility arrangement of the present invention.
Fig. 3 is a schematic diagram illustrating the principle of the present invention.
Fig. 4 is an enlarged schematic view of a portion of the inventive dam structure arrangement.
Fig. 5 is a partially enlarged schematic illustration of a dam construction arrangement according to the present invention.
Fig. 6 is an enlarged schematic view of a portion of the control valve arrangement of the present invention.
Fig. 7 is a partially enlarged schematic illustration of a control valve arrangement of the present invention.
The figures are marked as follows: 1-blocking structure, 2-flood discharge channel, 3-underdrain, 4-vertical shaft, 5-control valve, 6-output channel, 7-cistern.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described in terms of the layout pattern of the drawings of the specification, and the positional relationship of the upper, lower, left, right, etc. is determined in terms of the layout direction of the drawings of the specification.
As shown in fig. 1 to 7, the left side of the drawing is the upstream side of a valley, the underground water collecting, water conveying and storing gallery suitable for the campaigns in North China comprises a blocking structure 1, a flood discharging channel 2, an underdrain 3, a vertical shaft 4, a control valve 5, an output channel 6 and a reservoir 7, in the whole valley flow field, construction is started at a position of more than 20 degrees from the slope of a near-valley source of the valley, firstly, the blocking structure 1 is constructed on the ground, the blocking structure 1 is mainly a wood pile fence or a stone cage, or can be used both, at least five blocking structures 1 are arranged along the water flow direction of the valley, each blocking structure 1 is arranged from the left side of the valley to the right side of the valley, the blocking structure 1 is mainly used for blocking broken stone and sand on the upstream, and meanwhile, the broken stone and the sand can be roughly screened as standby materials. In the embodiment, five blocking structures 1 are arranged, wherein the uppermost stream one blocking structure 1 is a first blocking structure 1 which uses gabions, then a second blocking structure 1 is arranged at the position 5 m-10 m downstream of the first blocking structure 1, the second blocking structure 1 uses gabions, and the first two blocking structures 1 are arranged between two adjacent gabions in the same blocking structure 1 at an interval of 1 m-2 m and mainly block fallen large stones; arranging a third blocking structure 1 at the position 5-10 m below the second blocking structure 1, wherein the third blocking structure 1 uses a wood pile fence, and the interval between two adjacent wood piles is 0.5m; arranging a fourth blocking structure 1 at the position 5-10 m below the third blocking structure 1, wherein the fourth blocking structure 1 uses a wood pile fence, and the interval between two adjacent wood piles is 0.2m; and the last blocking structure 1 is arranged 5 m-10 m downstream, the last blocking structure 1 adopts a wood pile fence, and the interval between two adjacent wood piles is 5 cm-10 cm. The vertical shafts 4 are communicated with the underdrain 3, and a first vertical shaft 4 is arranged at the downstream of the first blocking structure 1; the width of the wellhead of the vertical shaft 4 is between 1.5m and 2.5m, the depth is between 3m and 10m, the depth of the vertical shaft 4 mainly depends on the main use of the vertical shaft 4 in the region, and if the purpose of water storage irrigation is achieved, the well depth is relatively deep; if the purpose of diversion is to be realized, the well depth is relatively shallow, and well digging is difficult and easy according to local engineering geological conditions. At a reasonable position near the outlet of the gully, i.e. in a comparatively open zone which is easy to excavate and does not influence the road traffic and the residence of the residents, a total reservoir 7, i.e. a first reservoir, is provided. The outlet of the valley is a region where the slope of the channel is very gentle, the width of the valley is obviously widened near the flat land, and the ridge boundary lines on the two sides of the valley disappear. In order not to obstruct traffic, preferably, the first reservoir is built underground, and then a small reservoir 7, namely a second reservoir, is correspondingly arranged in village homes, meanwhile, the first reservoir and the second reservoir are communicated through an output channel 6, and control valves 5 are arranged at the water inlet and the water outlet of the first reservoir and the second reservoir, so that water quantity allocation is guaranteed. Finally, the first reservoir is connected to the flood discharge channel 2 via the outlet channel 6, so as to perform a timely flood discharge when large-scale flood occurs.
One embodiment of the invention is: firstly, determining the position of the most upstream shaft 4 in the gully, ensuring that the shaft 4 positioned at the most upstream, namely the first mouth shaft 4, is arranged behind the first blocking structure 1, then determining the position of the most downstream shaft 4, namely the last mouth shaft 4, in the range of 20 m-60 m upstream of the gully at the gully outlet, then arranging the shafts 4 at the junction of each main trench and branch trench of the gully, and finally determining the positions of other shafts 4 according to the interval of 20 m-40 m (the larger distance is more obvious in diversion effect and the smaller distance is more obvious in water storage effect) between the determined shafts 4; after the vertical shaft 4 is determined, the vertical shaft 4 is communicated with the underdrain 3, the underdrain 3 is of a reinforced concrete structure, the cross section of the underdrain 3 is preferably square or round, when the cross section of the underdrain 3 is round, the diameter of the underdrain 3 is preferably 50 cm-70 cm, the underdrain 3 is preferably excavated in a straight line, and the gradient of the underdrain 3 in the whole flow area from the upstream to the downstream of the gullies is 3-5 degrees; at least one layer of underdrain 3 is arranged below the ground surface, and under the condition that only one layer of underdrain 3 is arranged, the closer the underdrain 3 is arranged to the ground surface, the larger the water storage function is, the more the underdrain 3 is arranged to the bottom of the vertical shaft 4, the more obvious the water delivery and diversion function is, and the weaker the water storage function is. After the first reservoir is located, it is connected to the valley downstream-most underdrain 3 via the outlet channel 6. Finally, the position of the outlet channel 6 between the first reservoir and the small second reservoir in the village is determined, and the position of the flood discharge channel 2. Since these channels are to be installed in villages, the existing facilities cannot be destroyed in consideration of the rationality of the location selection, and thus the output channels 6 avoid the use of straight excavation. The channels which are excavated in villages are utilized as much as possible for design, the longitudinal gradient of the output channels 6 is smaller than the longitudinal gradient of the ground, and the output channels are arranged perpendicular to the ground contour.
After the construction positions of the underdrain 3, the vertical shaft 4, the output channel 6 and the reservoir 7 are determined, the construction is basically not affected, multiple places can be excavated simultaneously, the construction period is shortened, and the staged construction and the extension of the engineering are facilitated.
The specific position of the underdrain 3 in the invention can be determined through corresponding hydrogeological exploration and calculation, and the capacity and the number of the vertical shafts 4 and the capacity of the reservoir 7 need to be reasonably set according to local requirements and annual rainfall total.
In order to facilitate the drainage of construction, the construction is preferably carried out from downstream to upstream and from the main trench to the branch trench. If no trouble of drainage problem exists, the construction process can be accelerated by excavating all the places at the same time. The water delivery project related by the invention mainly comprises an underdrain 3 and an output channel 6, wherein the underdrain 3 is generally in a reinforced concrete structure, the flow state is an underdrain, the ground of the underdrain 3 is connected with the output channel 6, and the output channel 6 is an underdrain and/or an open flow, so that effective distribution of water resources is performed.
As an optimization of the embodiment, according to actual needs, a control valve 5 capable of adjusting the water outlet flow of the underdrain 3 is arranged in the vertical shaft 4 at the junction of the vertical shaft 4 and the underdrain 3. The water quantity in the vertical shaft 4 is regulated by arranging the upper and lower layers or the multi-layer underdrain 3, the layer number of the specific underdrain 3 is set according to the requirements, the construction difficulty and the economic conditions, and the control valve 5 is used for precisely controlling and regulating the water outlet flow of the underdrain 3, so that the water yield of each section of the underdrain 3 can be manually controlled in operation. And the control valve 5 of each outlet is closed to facilitate the overhaul of each facility in the water delivery and storage gallery.
The vertical shaft 4 is mainly used for storing water and distributing water, the setting depth can be determined according to local geological conditions, meanwhile, the arrangement and the design are reasonable, and the vertical shaft can also be used as a storage room in winter.
The underdrain 3 mainly serves as a conveying channel and filters purified water along the way.
The output channel 6 is mainly used for carrying out water transportation and allocation, and reasonably distributing water resources.
And a reservoir 7 for storing surplus water as an irrigation or drinking water source.
The blocking structure 1 mainly uses wood piles and gabions. Is used for intercepting and screening solid matters in the gullies, and prevents the vertical shaft 4 from being blocked. In addition, reasonable design keeps off the interval between the structure 1, can play the effect of classifying screen, effectively select separately stone, gravel, as reserve building materials.
The control valve 5 is mainly used for controlling the opening and closing of water storage and delivery facilities, realizing the time and space distribution of water resources and efficiently utilizing the water resources.
The flood discharge channel 2 is mainly used for draining and/or discharging flood.
Economic benefit:
1. most of the building materials can be collected locally in construction, and the building material has low cost, is natural and environment-friendly. The timber can be selected from the waste stones of the local adult trees, gabions, the local rolling down, the shaft 4, the underdrain 3 and the like. The built ground facilities can not influence the route of local people entering the mountain, and once engineering construction is carried out in the valley, the built ground facilities can be timely removed and/or buried without great waste.
2. The invention can reduce the runoff flow at the bottom of the ditch and further reduce the flow rate of water flow in stormwater by the action of the vertical shaft 4 and the underground underdrain 3 in the valley flow area. On one hand, the flood water can be effectively utilized and the problem of uneven space-time distribution of the water resources can be reduced by dividing and storing the flood water; on the other hand, the possibility of occurrence of or damage to a large part of the flood debris flow can be reduced.
3. The construction method is natural and environment-friendly, integrates the functions of development and utilization of precipitation and improvement of the water resource utilization rate of mountain areas. The vertical shaft 4 can store water, and can take water nearby when being planted in the mountain; on the other hand, these precipitation can be collected in the village reservoir 7 by channel transportation and purification along the way, and become village domestic water. Is beneficial to slowing down the water shortage condition in the mountain area and promoting the development of planting economy in the mountain area.
4. The underground water collecting, transporting and storing corridor suitable for the campaigns in North China is low in cost, is an ideal and effective prevention and treatment measure for areas with poor economic capability, and is beneficial to large-scale popularization. Moreover, the technical threshold bottom of the invention can effectively pull employment.
5. The underground water collecting, water conveying and storing corridor suitable for the campaigns in North China helps to solve the dilemma of preventing and controlling the current mountain torrent mud-rock flow.
6. The underground water collecting, transporting and storing corridor suitable for the campaigns in North China can lay a foundation for automatic water supply in the future.
7. The invention provides a underground water collecting, water conveying and storing gallery suitable for a campaigns in North China, wherein the size of a shaft 4 wellhead is designed according to the local valley size and the concentrated rainfall; the arrangement of the underdrain 3 can be designed according to the difficulty of local engineering geological conditions; the well depth of the vertical shaft 4 and the size of the reservoir 7 in village can be designed according to the total rainfall amount in the rainy season recorded in the history; the interval of the vertical shafts 4 is also designed according to the size of the valleys and the construction difficulty. The well lid or warning sign of grid form is to be placed to shaft 4 wellhead, prevents to take place danger.
8. The underground water collecting, transporting and storing gallery suitable for the campaigns in North China can also have beneficial effects on the local ecological environment once an effective water source is formed. On the basis, the local ecological environment can be effectively changed through the transformation of local government and people, the novel ecological environment building block is further built into tourism and leisure places, and the income of people is improved.
9. On the basis of the water delivery of the candelilla gallery, the water delivery and water storage are combined through adjustment, and the working efficiency is improved. But also solves the problems that the water taking and water delivering engineering can not be organically combined with each other and is unfavorable for the application of the modern jacking pipe and other technologies. Meanwhile, the water delivery and the water collection building can be combined into a whole, so that the investment of water delivery engineering is reduced. The water outlet is matched with the near-modern pipeline technology, namely, the control valve 5 is arranged, so that the water flow is favorably and accurately regulated, the application of the modern pipe jacking technology and the like in construction is facilitated, and the water resource utilization rate is improved. The whole gallery facilities are subjected to seepage prevention and sealing measures.
10. The underground water collecting, water conveying and storing corridor suitable for the campaigns in North China makes full use of the land in the valleys, does not basically affect the original village pattern and facility arrangement, and effectively utilizes the limited land resources in the mountain areas; meanwhile, the invention has small engineering quantity, basically does not generate secondary disasters, can improve the local economic benefit and is suitable for the ground.
The technical characteristics form the embodiment of the invention, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (5)
1. A water collecting, transporting and storing gallery suitable for use in a campaigns underground in north China, comprising: the system comprises a blocking structure, a flood discharging channel, an underdrain, a vertical shaft, a control valve, an output channel and a water storage tank, wherein at least five channels of blocking structures are arranged in the whole valley flow field along the water flow direction of the valleys, each channel of blocking structure is arranged from the left bank of the valleys to the right bank of the valleys, and the first channel of blocking structure is arranged at the position of the valleys, which is close to the source gradient of the valleys, and continuously changes by more than 20 degrees; the vertical shafts are communicated with the underdrain, and a first vertical shaft is arranged at the downstream of the first blocking structure; the water reservoirs are divided into a first water reservoir and a second water reservoir, and the first water reservoir is communicated with the second water reservoir through an output channel; the underdrain is arranged at the subsurface, and the water outlet end of the underdrain is connected with the first reservoir through the output channel; the flood discharge channel is communicated with the first reservoir through the output channel; the control valve is arranged at the inlet of the reservoir, the outlet of the reservoir, the junction of the underdrain and the output channel and the junction of the underdrain and the vertical shaft;
the blocking structure adopts gabions or wooden stake fences;
five blocking structures are arranged along the water flow direction of the gullies, the distance between two adjacent blocking structures is 5 m-10 m, the first blocking structure and the second blocking structure adopt gabions, and the distance between two adjacent gabions arranged in the same blocking structure is 1 m-2 m; the third blocking structure adopts a wood pile fence, and the interval between two adjacent wood piles is 0.5m; the fourth blocking structure adopts a wood pile fence, and the interval between two adjacent wood piles is 0.2m; the fifth blocking structure adopts a wood pile fence, and the interval between two adjacent wood piles is 5 cm-10 cm;
the gradient of the underdrain from the upstream to the downstream of the gully is 3-5 degrees;
the last vertical shaft is arranged in the range of 20 m-60 m of the gully outlet;
the width of the wellhead of the vertical shaft is 1.5 m-2.5 m, and the depth is 3 m-10 m.
2. The underground water collection, water delivery and storage gallery for a north China mountain area campaigns of claim 1, wherein: at least one underdrain is disposed below the earth's surface.
3. The underground water collection, water delivery and storage gallery for a north China mountain area campaigns of claim 1, wherein: the cross section of the underdrain is square or round.
4. The underground water collection, water delivery and storage gallery for a north China mountain area campaigns of claim 1, wherein: a vertical shaft is arranged at the junction of the main ditch and the branch ditch of the gully.
5. The underground water collection, water delivery and storage gallery for a north China mountain area campaigns of claim 1, wherein: the longitudinal gradient of the output channel is smaller than the longitudinal gradient of the ground and is perpendicular to the ground contour line.
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| CN201910026076.4A CN109505287B (en) | 2019-01-11 | 2019-01-11 | Underground water collecting, transporting and storing gallery suitable for campaigns in North China mountain area |
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| CN201910026076.4A CN109505287B (en) | 2019-01-11 | 2019-01-11 | Underground water collecting, transporting and storing gallery suitable for campaigns in North China mountain area |
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| CN109505287A CN109505287A (en) | 2019-03-22 |
| CN109505287B true CN109505287B (en) | 2024-03-12 |
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| CN209429048U (en) * | 2019-01-11 | 2019-09-24 | 吉林大学 | One kind being suitable for Mountainous Area in North China karez formula underground and catchments water delivery water storage gallery |
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