CN1044839A - Infiltration-draining method for underground structure - Google Patents
Infiltration-draining method for underground structure Download PDFInfo
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- CN1044839A CN1044839A CN 88106683 CN88106683A CN1044839A CN 1044839 A CN1044839 A CN 1044839A CN 88106683 CN88106683 CN 88106683 CN 88106683 A CN88106683 A CN 88106683A CN 1044839 A CN1044839 A CN 1044839A
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- water
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Abstract
The present invention utilizes the groundwater table mode of occurence and oozes drain function naturally, with the rainwater that accumulates in the underground structure, drains into the depths, stratum by oozing drainage channel.Method is to bore a hole in the bottom, underground structure, bores and is deep to underground sand bed, and the son that rockfills in the hole oozes ponding and drains into water table aquifer.A nylon wire is put, the earth that filtering flows into water in top, boring top.The present invention is applicable to various underground structures, as the draining of underground pipeline and hand-hole, basement etc.Drainage effect is good, remarkable in economical benefits.
Description
The invention belongs to a kind of infiltration-draining method of underground structure, is to utilize nature to ooze drain function, and the rainwater with accumulate the underground structure by drainage channel, drains into the depths, stratum.
The underground structure comprises basement of raceway and manhole, communication cable passage, tunnel, power cable box drain, heat distribution pipeline and caliduct box drain, coal gas pipe trench, underground cable basement, various buildings etc.These underground structure ponding directly influence the safety of underground structure erection equipment and have increased the drainage works amount of line service.
At present, for the rainwater that underground pipe trench and building accumulate, adopt artificial drainage, the draining of electromechanical water pump, draining and natural drainage etc. automatically.Britain, be in the manhole bottom vertical to gutter of lower device, when underground water level rises, also adorn a steel ball float one-way cock, prevent anti-filling.Japan is in the mouth circle of manhole cover, installs a tubule, and the rainwater that the manhole enclosing cover is entered causes sewer, or at soakaway pit of manhole next door building, so that the rainwater that storage enters.More than these methods played some drainage, but all can not effect a radical cure ponding.The ground water drainage system of U.S. Pat 4271648 designs, with custom-designed porous air axle, pass the bottom and the limit wall of underground structure, extend to the following place, water source of phreatic surface, one end of axle has cone-shaped end, the flange engagement head is housed on the other end, connects, the water of receive is oozed from the eyelet of hollow shaft discharge with the pipeline at this place.This device is had relatively high expectations to piercing underground hole axle, the design more complicated.Equipment processing charges height.
The objective of the invention is to develop a kind of simple in structure, economical and effective infiltration-draining method for underground structure utilizes nature to ooze drain function, solves the drainage problem of various underground structures.
Implementation method of the present invention: bore a hole in the bottom of underground structure, pass perched water water layer (argillic horizon) and be communicated with, and in boring, fill out with stone with water table aquifer, make the rainwater that accumulates in the underground structure, ooze and drain in the water table aquifer,, just can reach row's ponding purpose with less cost.
Groundwater table is divided into perched water, diving and artesian water by mode of occurence.Perched water is obstructed and is gathered together when seasonal rainfall or surface water penetrate into local water barrier, is the underground water nearest apart from the face of land.Its distribution is very little, exists when usually being rainy season, and evaporation disappears during dry season, is a kind of unsettled underground water; Diving is first the stable water barrier that is imbedded under the face of land, is the gravity water with table, and diving flows to low water stage from high water level, and its hydrostatic pressing performance is not obvious, so claim no setting-out again; Artesian water is to be filled in two underground water between the water barrier.When the underground water in its aquifer is not filled, be called intermediary water, have diving character, when the aquifer was filled, as water barrier on it is drilled through, underground water can be gushed out, and was higher than this place's water barrier base plate, as the ground surface of gushing out, and claimed artesian water.A water barrier is all arranged between every kind of water table, mostly is argillic horizon.According to phreatic distribution situation, the water barrier of perched water bottom is drilled through, perched water just can flow into water table aquifer by boring, as hole enough when big, the water level of perched water just can descend gradually, its water level is tending towards the table of diving under water gradually, and infiltration-draining method of the present invention designs according to above principle.
The underground structure buried depth is more shallow, can think a special local water barrier in the perched water zoning.It is relevant with displacement that it oozes drainage effect, must satisfy I
1+ I
2＜Q.Above I
1The water yield for the building that permeates the ground; I
2For flowing into the water yield of underground structure; Q oozes the water yield of discharging the underground structure.Under the not very big situation of perched water amount, be easy to satisfy I
1+ I
2The formula of＜Q.When the perched water amount is very big, often form I
1+ I
2＞＞Q, water accumulation level constantly rises in the underground structure, can reach and the fair degree of the water level of perched water.
The Q value should be a constant, the Q value determine that the soil property situation is relevant with infiltration coefficient in the aquifer with to ooze drainage channel soil property on every side relevant.Transmission coefficient such as following table.
| The soil property classification | Fine sand | Medium sand | Coarse sand | Gravel |
| Transmission coefficient (rice/round the clock) | 2－5 | 5－15 | 15－30 | 30－70 |
As seen from the table, the soil property particle is littler, and its transmission coefficient is littler, if clay, its penetrating power will be 0.Therefore, the size of Q value is to determine according to the soil property around the boring.The soil layer characteristics difference of different regions, most cases at first is a fill stratum, is loess formation, sandy soil layer, gravel then.The degree of depth of boring must get into gravel, bores dark 2-5 rice approximately, just can play and ooze drainage.Rig adopts lower-cost artificial Churn drill, selects for use the bore diameter of φ 76-118 millimeter to be advisable.
Drainage channel is unlikely to be stopped up by earth in order to guarantee to ooze, and adopts water treatment plant, keeps drainage channel unimpeded, and making Q is a steady state value.
Specify below in conjunction with accompanying drawing
Fig. 1 is that building oozes the dewatering installation profile under the normal soil quality.
Fig. 2 adds pipe to ooze the dewatering installation profile.
In conjunction with Fig. 1, the underground soil layer the superiors are perched water districts 1, this be surface water penetrate into local water barrier be obstructed and gather together apart from the nearest underground water of ground surface, next coming in order are local water barrier 2 that is made of clay and the Sub-aqua area 3 that is made of gravel.
This infiltration device is applicable to the area that backwater capacity is little, a soakaway pit 7 is arranged at 6 bottom in the underground structure, the boring 11 of in soakaway pit, boring a φ 76-118 millimeter with the vertical rig of artificial Churn drill, bore dark about 2-5 rice, 4 end to the gravel place, and fill out with stone 5 in boring, if be earth around the boring, should bore more deeply, to increase the Q value.But be drilled into above behind the water barrier, should stop immediately creeping into.As boring is that sand or gravel can bore more shallowly on every side.After the boring, the son that in boring, rockfills, good penetrability, the unlikely landslide of protection boring on the other hand on the one hand: after boring is rockfilled, recover the basis of cutting place with 1: 3 cement mortar.A nylon wire 8(is placed as 160 purpose nylon wires in the top above boring simultaneously), spread thereon with sand 12 again.This nylon wire plays water filtering function, prevents that earth from entering boring with water, when the earth of online overheap, can take out removing, and newly change coarse sand.
In conjunction with Fig. 2, add the dewatering installation that oozes of pipe, be applicable to the depression of the very big and long-term ponding of perched water amount.Its structure and shown in Figure 1 basic identical, different is to add a path plastic pipe 9 in boring, and the plastic pipe diameter can be 20～30 millimeters, and the stone layer 10 of 20 cm thicks of having an appointment in the plastic pipe bottom joins with gravel.
Analyze with Beijing area portion performance, the phreatic table of Beijing City generally is lower than 15 meters, and communication pipe bottom buried depth is generally about 1.5 meters, and manhole bottom buried depth is generally about 3 meters, as calculating with drilling depth 2-5 rice, the ponding of manhole promptly can ooze and drain into the depths, stratum.According to more than 2700 infiltration manholes statistics of having constructed, reached more than 90% at any time water to be oozed and drained into the depths, stratum.Other has 10% to fail to reach and ooze drainage requirement, and its reason is that perched water is too much, and it is slow to ooze drainage speed.This kind situation can be oozed drainage area with expansion by increasing drilling depth, solves and improves the drainage speed problem.Perhaps put a path plastic pipe in boring, pass local water barrier (clay), the perched water that reduces to enter manhole is filled out stone and the sand bed of putting about 20 cm thicks of one deck in the plastic pipe bottom and is joined.
The present invention is for various underground structures, as the buried cable basement of communication cable pipeline and manhole, power cable box drain, heat distribution pipeline box drain, caliduct box drain, coal gas pipe trench, telephone office, machine room lower etc. all applicable. When usually designing the underground structure, all will adopt some waterproof measures, these waterproof measures involve great expense. Some building, such as communication cable pipeline and manhole thereof, amount is big and the construction battle line is long, hard to guard against, often adopt waterproof measure after, still accumulate a large amount of rainwater. As adopt the present invention, and drainage effect is good, remarkable in economical benefits, and also its indirect economic effect is far longer than direct economic benefit.
Claims (5)
1, a kind of infiltration-draining method of underground structure, it is characterized in that bottom vertical boring in the underground structure, this hole is passed local water barrier and is communicated with water table aquifer, fills out with stone or rough sand in boring, and the boring top is equipped with and makes the rainwater that accumulates in the building ooze the water treatment plant that drains into water table aquifer.
2, infiltration-draining method according to claim 1 is characterized in that boring and being deep to sandy gravel stratum in the boring of building bottom vertical.
3, infiltration-draining method according to claim 1 is characterized in that the bit diameter that is used to hole is a φ 76-118 millimeter.
4, infiltration-draining method according to claim 1, the low-lying area that it is characterized in that and long-term ponding very big in the perched water district water yield, the plastic pipe that to add a diameter be the 20-30 millimeter in boring, pipe bottom pad one deck stone, this stone layer and grit layer join.
5, infiltration-draining method according to claim 1, a water treatment plant is installed at the top that it is characterized in that holing, and a nylon wire that filters fine grained earth is arranged on it, and the shop is with sand in the net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106683 CN1014915B (en) | 1988-09-21 | 1988-09-21 | Infiltration-draining method for underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106683 CN1014915B (en) | 1988-09-21 | 1988-09-21 | Infiltration-draining method for underground structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1044839A true CN1044839A (en) | 1990-08-22 |
| CN1014915B CN1014915B (en) | 1991-11-27 |
Family
ID=4834348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106683 Expired CN1014915B (en) | 1988-09-21 | 1988-09-21 | Infiltration-draining method for underground structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014915B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336984C (en) * | 2003-10-15 | 2007-09-12 | 广州极思意环境技术有限公司 | Filtering device for large depth vacuum drainage, compacting dehydration process and construction method of filtering device |
| CN103821525A (en) * | 2014-03-10 | 2014-05-28 | 山西太钢不锈钢股份有限公司 | Cable tunnel rapid construction method in high water level geological condition |
| CN104343177A (en) * | 2013-07-26 | 2015-02-11 | 德翰智慧科技有限公司 | Subsurface drainage channel |
| CN105317035A (en) * | 2015-11-16 | 2016-02-10 | 上海市政工程设计研究总院（集团）有限公司 | Soft soil foundation rainwater infiltration promotion system and construction method thereof |
| CN105532369A (en) * | 2015-12-10 | 2016-05-04 | 天津泰达盐碱地绿化研究中心有限公司 | Method for improving urban green land soil moisture infiltration efficiency |
| CN106758668A (en) * | 2016-12-01 | 2017-05-31 | 北京东方凌云科技有限公司 | A kind of new method of recharge underground water |
| CN106836435A (en) * | 2015-03-12 | 2017-06-13 | 周太泽 | The hard pavement construction method of underground water nature recharge |
| CN107100206A (en) * | 2017-06-22 | 2017-08-29 | 山东建筑大学 | A kind of prevention and controls of basement leakage |
-
1988
- 1988-09-21 CN CN 88106683 patent/CN1014915B/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336984C (en) * | 2003-10-15 | 2007-09-12 | 广州极思意环境技术有限公司 | Filtering device for large depth vacuum drainage, compacting dehydration process and construction method of filtering device |
| CN104343177A (en) * | 2013-07-26 | 2015-02-11 | 德翰智慧科技有限公司 | Subsurface drainage channel |
| CN104343177B (en) * | 2013-07-26 | 2016-08-31 | 德翰智慧科技有限公司 | Subdrainage passage |
| CN103821525A (en) * | 2014-03-10 | 2014-05-28 | 山西太钢不锈钢股份有限公司 | Cable tunnel rapid construction method in high water level geological condition |
| CN103821525B (en) * | 2014-03-10 | 2015-10-28 | 山西太钢不锈钢股份有限公司 | Cable tunnel rapid constructing method under high water level geological conditions |
| CN106836435A (en) * | 2015-03-12 | 2017-06-13 | 周太泽 | The hard pavement construction method of underground water nature recharge |
| CN105317035A (en) * | 2015-11-16 | 2016-02-10 | 上海市政工程设计研究总院（集团）有限公司 | Soft soil foundation rainwater infiltration promotion system and construction method thereof |
| CN105532369A (en) * | 2015-12-10 | 2016-05-04 | 天津泰达盐碱地绿化研究中心有限公司 | Method for improving urban green land soil moisture infiltration efficiency |
| CN106758668A (en) * | 2016-12-01 | 2017-05-31 | 北京东方凌云科技有限公司 | A kind of new method of recharge underground water |
| CN107100206A (en) * | 2017-06-22 | 2017-08-29 | 山东建筑大学 | A kind of prevention and controls of basement leakage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1014915B (en) | 1991-11-27 |
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