CN103306297B - Excavation of foundation pit load reducing measure - Google Patents
Excavation of foundation pit load reducing measure Download PDFInfo
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- CN103306297B CN103306297B CN201310237379.3A CN201310237379A CN103306297B CN 103306297 B CN103306297 B CN 103306297B CN 201310237379 A CN201310237379 A CN 201310237379A CN 103306297 B CN103306297 B CN 103306297B
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- water level
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- ball float
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Abstract
The present invention relates to a kind of excavation of foundation pit load reducing measure, comprise the steps: step one: carry out shoveling off-loading in built construction bottom, and carry out foundation ditch shoveling near built construction; Step 2: built construction and near some well-points dewatering pipes and water level detecting pipe are set around foundation ditch shoveling place, described water level detecting pipe is arranged in the foundation soil of below foundation ditch bottom surface; Step 3: some well-points dewatering Guan Yuyi root well-points dewatering house stewards communicate, and water is discharged to appointed place by water pump by well-points dewatering house steward.The present invention can the startup of control well point dewatering facility and closedown automatically, guarantees that deep pit monitor is reliable.
Description
Technical field
The present invention relates to a kind of excavation of foundation pit, specifically excavation of foundation pit load reducing measure.
Background technology
General near building, especially excavation pit near high-rise building, can produce potential safety hazard to built construction.Therefore, adopt the measure such as diaphragm wall or fender post to foundation ditch strengthening, to control the harm produced due to excavation of foundation pit more.
Summary of the invention
The present invention is intended to the defect overcoming prior art, provides a kind of excavation of foundation pit load reducing measure, and the startup of automatic control well point dewatering facility and closedown, guarantee that deep pit monitor is reliable.
In order to solve the problems of the technologies described above, the present invention is achieved in that
A kind of excavation of foundation pit load reducing measure, it is characterized in that, it comprises the steps:
Step one: carry out shoveling off-loading in built construction bottom, and foundation ditch shoveling is carried out near built construction;
Step 2: built construction and near some well-points dewatering pipes and water level detecting pipe are set around foundation ditch shoveling place, described water level detecting pipe is arranged in the foundation soil of below foundation ditch bottom surface;
Step 3: some well-points dewatering Guan Yuyi root well-points dewatering house stewards communicate, and water is discharged to appointed place by water pump by well-points dewatering house steward.
Described excavation of foundation pit load reducing measure, it is characterized in that: described water level detecting pipe is made up of upper and lower two parts, top is well-point pipe, bottom is filtered water well casing, water level detecting pipe inside is provided with low water stage cable ball float and high water level cable ball float, and described low water stage cable ball float and high water level cable ball float are arranged on the precalculated position in water level detecting pipe by nylon rope and weight; Low water stage cable ball float and high water level cable ball float control low-side switch and high-side switch by low-water level switch wire and high water level switch wire; Described water level detecting pipe passes through startup and the closedown of the automatic control well point dewatering of control circuit.
Described excavation of foundation pit load reducing measure, is characterized in that: built construction and near foundation ditch shoveling place side slope on stay and establish 2mm Wide Worktable, form excavating sideline.
Described excavation of foundation pit load reducing measure, is characterized in that: the control circuit of described water level detecting pipe comprises major loop and control loop, and major loop comprises major loop automatic switch, contactor, the 3rd relay, three phase mains and water pump; Control loop comprises control loop switch, power supply indicator, run indicator, high-side switch, low-side switch, the first relay, the second relay, contactor coil, the first relay contacts point, the second relay contacts point and single phase poaer supply;
Major loop automatic switch control water pump, control loop switch control rule control loop; After major loop automatic switch is closed, water pump is in the holding state of three phase mains; After circuit switching to be controlled is closed, control loop is in the holding state of single phase poaer supply, and power supply indicator is luminous;
When water level reaches underground low water stage, low water stage cable ball float floats, and starts low-side switch and closes; When water level reaches high water level cable ball float, start high-side switch and close, now form the closed-loop path of high-side switch, low-side switch and the first relay, run indicator is luminous, and signal enters duty; After first relay is powered, start the first relay contacts point and the second relay contacts point to close, form the closed-loop path of the second relay contacts point, contactor coil and the second relay, contactor coil starting contactor closes, starting mode of pump, start well-points dewatering, the second relay connection is with the 3rd relay protection circuit simultaneously;
Well-points dewatering starts and dewatering, treats that groundwater table is lower than high water level cable ball float, and high-side switch disconnects, and now the first relay contacts point, low-side switch and the first relay are still in closed-loop path, and well-points dewatering continues to carry out; Treat below water level decreasing to low water stage cable ball float, low-side switch disconnects, and the first relay is without electricity simultaneously, and instruction first relay contacts point, the second relay contacts point disconnect, and contactor coil is without electricity, and instruction contactor disconnects, suspended well point dewatering.
The invention has the beneficial effects as follows: make easily, easy for installation, with strong points, simple to operate, by reducing the load around built construction thing, by reducing groundwater level, reduce the pressure that underground water produces.Especially, the present invention automatically can detect groundwater table, and the startup of automatic control well point dewatering facility and closedown, guarantee that deep pit monitor is reliable.The present invention is conducive to improving efficiency of construction and reduces costs, and is conducive to promoting safe construction by electronic information means, has good application and promotional value.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is that the present invention cuts the earth the structural representation of off-loading.
Fig. 2 is the structural representation at excavation of foundation pit place of the present invention.
Fig. 3 is the structural representation that well-points dewatering pipe of the present invention and water level detecting pipe are placed.
Fig. 4 is the structural scheme of mechanism of water level detecting pipe of the present invention.
Fig. 5 is control circuit figure of the present invention.
Fig. 6 is precipitation plane of arrangement schematic diagram.
Detailed description of the invention
As shown in Figure 1: a kind of excavation of foundation pit load reducing measure, it comprises the steps:
Step one: carry out shoveling off-loading 3 in built construction 1 bottom, dig the foundation bottom to built construction, reduces the pressure of earthwork team built construction; And near built construction, carry out foundation ditch cut the earth 2;
As shown in Figure 3, Figure 4: step 2: built construction and near some well-points dewatering pipes 6 and water level detecting pipe 7 are set around foundation ditch shoveling place, described water level detecting pipe is arranged in the foundation soil of foundation ditch bottom surface less than 26, and underground water can freely infiltrate;
As shown in Figure 6: step 3: some well-points dewatering pipes 6 communicate with a well-points dewatering house steward 35, and water is discharged to appointed place by water pump 8 by well-points dewatering house steward.
As shown in Figure 4: described water level detecting pipe 7 is made up of upper and lower two parts, top is well-point pipe 25, bottom is filtered water well casing 27, filtered water well casing can cross filter sand mud, groundwater table can be observed in time, water level detecting pipe inside is provided with low water stage cable ball float 30 and high water level cable ball float 31, and described low water stage cable ball float and high water level cable ball float are arranged on the precalculated position in water level detecting pipe by nylon rope 28 and weight 29; Along with the change low water stage cable ball float of groundwater table, high water level cable ball float can rotate, in order to automatically to identify groundwater table, control low-side switch 18 and high-side switch 19 by low-water level switch wire 33 and high water level switch wire 34, realize the object automatically controlling Application of light well point precipitation system.Low water stage cable ball float and high water level cable ball float control low-side switch and high-side switch by low-water level switch wire and high water level switch wire; Described water level detecting pipe passes through startup and the closedown of the automatic control well point dewatering of control circuit.
As shown in Figure 2: built construction and near foundation ditch shoveling place side slope on stay and establish 2mm Wide Worktable 5, form excavating sideline, to ensure the stable of cubic metre of earth side slope.
As shown in Figure 5: the control circuit of described water level detecting pipe comprises major loop and control loop, major loop comprises major loop automatic switch 9, contactor 10, the 3rd relay 11, three phase mains 13 and water pump 8; Control loop comprises control loop switch 12, power supply indicator 16, run indicator 17, high-side switch 19, low-side switch 18, first relay 20, second relay 24, contactor coil 23, first relay contacts point 21, second relay contacts point 22 and single phase poaer supply 15;
Major loop automatic switch 9 controls water pump 8, and control loop switch 12 controls control loop; After major loop automatic switch is closed, water pump is in the holding state of three phase mains 13; After circuit switching to be controlled is closed, control loop is in the holding state of single phase poaer supply 15, and power supply indicator 16 is luminous;
When water level reaches underground low water stage 32, low water stage cable ball float 30 floats, and starts low-side switch 18 and closes; When water level reaches high water level cable ball float 31, start high-side switch 19 and close, now form the closed-loop path of high-side switch 19, low-side switch 18 and the first relay 20, run indicator 17 is luminous, and signal enters duty; After first relay 20 is powered, start the first relay contacts point 21 and the second relay contacts point 22 closes, form the closed-loop path of the second relay contacts point 22, contactor coil 23 and the second relay 24, contactor coil 23 starting contactor 10 closes, water pump 8 starts, start well-points dewatering, the second relay 24 is with the 3rd relay 11 protection circuit simultaneously;
Well-points dewatering starts and dewatering, and treat that groundwater table is lower than high water level cable ball float 31, high-side switch 19 disconnects, and now the first relay contacts point 21, low-side switch 18 and the first relay 20 are still in closed-loop path, and well-points dewatering continues to carry out; Treat that water level decreasing is to low water stage cable ball float less than 30, low-side switch 18 disconnects, and the first relay 20 is without electricity simultaneously, instruction first relay contacts point 21, second relay contacts point 22 disconnects, contactor coil 23 is without electricity, and instruction contactor 10 disconnects, suspended well point dewatering.
Claims (2)
1. an excavation of foundation pit load reducing measure, is characterized in that, it comprises the steps:
Step one: carry out shoveling off-loading in built construction bottom, and foundation ditch shoveling is carried out near built construction;
Step 2: built construction and near some well-points dewatering pipes and water level detecting pipe are set around foundation ditch shoveling place, described water level detecting pipe is arranged in the foundation soil of below foundation ditch bottom surface;
Step 3: some well-points dewatering Guan Yuyi root well-points dewatering house stewards communicate, and water is discharged to appointed place by water pump by well-points dewatering house steward,
Described water level detecting pipe is made up of upper and lower two parts, top is well-point pipe, bottom is filtered water well casing, water level detecting pipe inside is provided with low water stage cable ball float and high water level cable ball float, and described low water stage cable ball float and high water level cable ball float are arranged on the precalculated position in water level detecting pipe by nylon rope and weight; Low water stage cable ball float and high water level cable ball float control low-side switch and high-side switch by low-water level switch wire and high water level switch wire; Described water level detecting pipe passes through startup and the closedown of the automatic control well point dewatering of control circuit.
2. excavation of foundation pit load reducing measure according to claim 1, is characterized in that: the control circuit of described water level detecting pipe comprises major loop and control loop, and major loop comprises major loop automatic switch, contactor, the 3rd relay, three phase mains and water pump; Control loop comprises control loop switch, power supply indicator, run indicator, high-side switch, low-side switch, the first relay, the second relay, contactor coil, the first relay contacts point, the second relay contacts point and single phase poaer supply;
Major loop automatic switch control water pump, control loop switch control rule control loop; After major loop automatic switch is closed, water pump is in the holding state of three phase mains; After circuit switching to be controlled is closed, control loop is in the holding state of single phase poaer supply, and power supply indicator is luminous;
When water level reaches underground low water stage, low water stage cable ball float floats, and starts low-side switch and closes; When water level reaches high water level cable ball float, start high-side switch and close, now form the closed-loop path of high-side switch, low-side switch and the first relay, run indicator is luminous, and signal enters duty; After first relay is powered, start the first relay contacts point and the second relay contacts point to close, form the closed-loop path of the second relay contacts point, contactor coil and the second relay, contactor coil starting contactor closes, starting mode of pump, start well-points dewatering, the second relay connection is with the 3rd relay protection circuit simultaneously;
Well-points dewatering starts and dewatering, treats that groundwater table is lower than high water level cable ball float, and high-side switch disconnects, and now the first relay contacts point, low-side switch and the first relay are still in closed-loop path, and well-points dewatering continues to carry out; Treat below water level decreasing to low water stage cable ball float, low-side switch disconnects, and the first relay is without electricity simultaneously, and instruction first relay contacts point, the second relay contacts point disconnect, and contactor coil is without electricity, and instruction contactor disconnects, suspended well point dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237379.3A CN103306297B (en) | 2013-06-17 | 2013-06-17 | Excavation of foundation pit load reducing measure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237379.3A CN103306297B (en) | 2013-06-17 | 2013-06-17 | Excavation of foundation pit load reducing measure |
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| Publication Number | Publication Date |
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| CN103306297A CN103306297A (en) | 2013-09-18 |
| CN103306297B true CN103306297B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310237379.3A Active CN103306297B (en) | 2013-06-17 | 2013-06-17 | Excavation of foundation pit load reducing measure |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2237800C1 (en) * | 2002-07-16 | 2004-10-10 | Общество с ограниченной ответственностью "Украинский межрегиональный центр "Гидротон ЛТД." | Method for extracting liquid oil products from surface of subterranean waters and system for realization of said method |
| CN201522650U (en) * | 2009-10-26 | 2010-07-07 | 山西六建集团有限公司 | Automatic water level control device of constructional engineering dewatering well |
| CN201943078U (en) * | 2010-12-20 | 2011-08-24 | 歌山建设集团有限公司 | Unmanned dewatering pump for tube well |
| CN202033078U (en) * | 2011-04-22 | 2011-11-09 | 福建铭发水产开发有限公司 | Water well level detection device for functional food |
| JP4824435B2 (en) * | 2006-03-08 | 2011-11-30 | 鹿島建設株式会社 | Groundwater level lowering method |
| CN102635122A (en) * | 2012-04-10 | 2012-08-15 | 上海广联建设发展有限公司 | Dewatering-recharging integrated device and process for foundation pit engineering |
| CN202757659U (en) * | 2012-07-23 | 2013-02-27 | 禹州市电力工业公司 | Water level alarm and control system of cable trench or seepage well |
| CN202881962U (en) * | 2012-10-15 | 2013-04-17 | 中国建筑第六工程局有限公司 | Foundation pit dewatering structure |
-
2013
- 2013-06-17 CN CN201310237379.3A patent/CN103306297B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2237800C1 (en) * | 2002-07-16 | 2004-10-10 | Общество с ограниченной ответственностью "Украинский межрегиональный центр "Гидротон ЛТД." | Method for extracting liquid oil products from surface of subterranean waters and system for realization of said method |
| JP4824435B2 (en) * | 2006-03-08 | 2011-11-30 | 鹿島建設株式会社 | Groundwater level lowering method |
| CN201522650U (en) * | 2009-10-26 | 2010-07-07 | 山西六建集团有限公司 | Automatic water level control device of constructional engineering dewatering well |
| CN201943078U (en) * | 2010-12-20 | 2011-08-24 | 歌山建设集团有限公司 | Unmanned dewatering pump for tube well |
| CN202033078U (en) * | 2011-04-22 | 2011-11-09 | 福建铭发水产开发有限公司 | Water well level detection device for functional food |
| CN102635122A (en) * | 2012-04-10 | 2012-08-15 | 上海广联建设发展有限公司 | Dewatering-recharging integrated device and process for foundation pit engineering |
| CN202757659U (en) * | 2012-07-23 | 2013-02-27 | 禹州市电力工业公司 | Water level alarm and control system of cable trench or seepage well |
| CN202881962U (en) * | 2012-10-15 | 2013-04-17 | 中国建筑第六工程局有限公司 | Foundation pit dewatering structure |
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| CN103306297A (en) | 2013-09-18 |
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Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee after: SHANGHAI ERSHIYE CONSTRUCTION Co.,Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee before: SHANGHAI MCC13 CONSTRUCTION Co.,Ltd. Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee after: SHANGHAI MCC13 CONSTRUCTION Co.,Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee before: CMTCC Shanghai 13th Construction Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190814 Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Co-patentee after: CHINA MCC20 GROUP Corp.,Ltd. Patentee after: SHANGHAI ERSHIYE CONSTRUCTION Co.,Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee before: SHANGHAI ERSHIYE CONSTRUCTION Co.,Ltd. |