CN104912053A - Method for using ores as loading material to perform surcharge preloading - Google Patents
Method for using ores as loading material to perform surcharge preloading Download PDFInfo
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Abstract
A method for using ores as a loading material to perform surcharge preloading comprises the steps that 1, the specific gravity of the ores is measured to determine total loading elevation; 2, the loading time and hierarchical surcharge preloading control are determined, third-stage loading is performed for multiple times, and the specific process of the third-stage loading includes loading to the total elevation, complete unloading, no-loading, loading to the total elevation, complete unloading and no-loading which are carried out in sequence. The method adopts harbor ores (iron ores and other metal ores) as the loading material, the mode that mountain soil and stones are transported from a remote mountainous area for loading is changed, local materials are used, and the purposes of cost reduction, construction period shortening, energy saving and environment protection are achieved.
Description
Technical field
The invention belongs to water conservancy construction field, relate to the heap material containing of piling prepressing, especially a kind of ore that adopts carries out the method for piling prepressing as heap material containing.
Background technology
The heap material containing that Efficiency in Buildings in Tianjin Area conventional surcharge preloading Loading uses is all mountain skin stone and the Shan Pi soil of certain weight proportion, and this heap material containing proportion is comparatively large, and permeability is better, but there is the problem of long distance transportation, economical and environmental protection cost is higher; And preloading complete after mountain skin soil process nowhere again.
By retrieval, find following two sections of patent documents:
1, a kind of well-points dewatering combined heap load precompacting reinforcing deep soft soil based method (CN103031837A), place leveling that it comprises the steps: (1), soft foundation is backfilled to more than the water surface under water; (2) horizontal drainage sand cushion is laid in the top layer, place that step (1) is formed; (3) plug vertical drainage body, plug downwards from sand mat of subgrade and run through Soft Soil Layer to design elevation; (4) waiting that reinforcing foundation region periphery arranges water-stop curtain; (5) the horizontal drainage sand cushion formed in step (2) lays well point at a certain distance; (6) starting well-points dewatering, simultaneously treating to carry out preloading construction in reinforcing foundation region, taking measures in preloading work progress to protect well-points dewatering equipment, after preloading has been constructed, well-points dewatering combined heap load precompacting; (7), after precompressed completes, unload and remove well point.Application the present invention carries out deep soft soil consolidation process, can reduce costs, the reduction of erection time.
2, a kind of preloading safe construction method (CN101603308) used on strong constitutive property weak soil of construction engineering technical field, step of the present invention is: the first step, in earlier stage geological survey, divide soil layer, find out the position of pervious layer, groundwater type and water recharging situation, and by soil test determination Soil Parameters, make soil test achievement summary table; Second step, the plastic draining board in early stage and the construction of sand cushion; 3rd step, geological exploration in mid-term, determines that Plastic Drain Slab Construction is to the level of disruption of the bottom soil body in earlier stage; 4th step, determines construction parameter, increases the scheduling determining later stage embankment preloading with the relation of the degree of consolidation according to soil strength; 5th step, carries out embankment preloading construction according to the constructure scheme determined in the 4th step, last road surface pavement, completes the construction of whole embankment.The inventive method is simple, greatly can improve the safety of construction, the reduction of erection time most possibly.
Contrasted by technical characteristic, above-mentioned patent document and the present patent application have relatively big difference.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of ore (iron ore and other metallic ores) that adopts to carry out the method for piling prepressing as heap material containing.
The object of the invention is to be achieved through the following technical solutions:
Adopt ore to carry out a method for piling prepressing as heap material containing, step is:
(1) measure ore proportion, determine to load total absolute altitude;
(2) determine that preloading time and classification prefabricating load control;
The first order loads: the time is greater than 30 days, preloading intensity to 20 ~ 30KPa, absolute altitude to 1.0 ~ 1.5m;
The second level loads: the time is greater than 30 days, preloading intensity to 30 ~ 50KPa, absolute altitude to 1.5 ~ 3.0m;
The third level loads and carries out several times: be greater than 120 days total time; Preloading intensity is to 85KPa; Absolute altitude to 3.0 ~ 4.5m, the idiographic flow that the third level loads is: be loaded on total absolute altitude-all unloadings-unloaded-be loaded on total absolute altitude-all unloadings-unloaded-, carry out successively.
And described ore is ferrous metal ore or nonferrous metallic ores or rare, rare earth metals.
And described ferrous metal ore is iron ore, manganese ore, chrome ore, navajoite stone, titanium ore.
And described nonferrous metallic ores is Copper Ores, lead ore, zinc ore, cobalt ore, nickel ores, tungsten ore, tin ore, molybdenum ore, bismuth mineral stone, mercury ore stone, antimony ore.
And described rare, rare earth metals are tantalum ore stone, niobium ore, beryllium, lithium ore, zirconium ore, caesium ore, rubidium ore, strontium ore, yttrium race rare earth.
And described whole unloadings are all pulled away from stockyard by the ore charge that the first order, the second level, the third level load.
Advantage of the present invention and good effect are:
1, the present invention comprehensively analyzes PORT OF TIANJIN bulk goods composition of ores and proportion, find that its proportion characteristic also can complete preloading function preferably compared with the skin stone of general mountain, and be utilize in the district of port to need to take up an area the ore stored up, kill two birds with one stone, achieve the object that engineering construction is carried out on production limit, limit, produce good social benefit and economic benefit.Form comparatively perfect mineral preloading techniqueflow simultaneously.
2, the present invention relates to piling prepressing basement process heap material containing link, change remote pattern of carrying out preloading from transport mountain, mountain area skin stone in the past, gather materials on the spot, achieve reduce costs, the reduction of erection time, energy-conserving and environment-protective object.
3, the present invention is the even precompressed of entirety ensureing interim stockyard, and unit in charge of construction formulates detailed loading schedule, forms stockyard piling prepressing (ore is stored up) period service load adjustment scheduling scheme.In line with repeated loading, the principle of intersection preloading, ensure that the every block soil body within the scope of interim stockyard can obtain effectively, isotropic consolidation.
Accompanying drawing explanation
Fig. 1 is load control plan curve map of the present invention;
Fig. 2 is the comparison diagram that different Ground Treatment Schemes reaches design degree of consolidation required time;
Fig. 3 is Xin Wuhua stockyard, Jiang Gang district, Gangdong, Tianjin Base Consolidation Engineering 10 district's pore water pressure and time history.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are further described; The present embodiment is descriptive, is not determinate, can not limit protection scope of the present invention thus.
Embodiment 1:
Adopt iron ore to carry out a method for piling prepressing as heap material containing, step is:
(1) measuring iron ore proportion is: 2.5t/m
3, determine that loading total absolute altitude is: 3.4m.
(2), according to engineering geological conditions and instructions for use, determine that preloading time and classification prefabricating load control, maximum load is 2 ~ 2.5 times of service load, and classification ratio is: 1:1:1.5:
The first order loads: the time: 30 days, preloading intensity is to 25KPa, absolute altitude to about 1.0m;
The second level loads: the time: 30 days, preloading intensity is to 50KPa, absolute altitude to about 2.0m;
The third level loads reduction of a fraction and carries out for 5 times: about 170 days total times, 150 days effective time; Preloading intensity is to 85KPa; Absolute altitude is to about 3.4m.
The idiographic flow that the third level loads is:
Load for 1st time: reach 3.4m, preloading intensity to 85KPa at top preloading third layer iron ore to total absolute altitude of second layer iron ore, keep 30 days;
1st unloading: all transported by three layers of iron ore of institute's preloading, keeps stockyard unloaded 5 days;
The re-loaded: next batch iron ore is transported to stockyard, and once heap is loaded onto 3.4m, keeps 30 days;
2nd unloading: all transported by re-loaded iron ore, keeps stockyard unloaded 5 days;
Load for 3rd time: next batch iron ore is transported to stockyard, once heap is loaded onto 3.4m, keeps 30 days;
3rd unloading: all transported by the iron ore that the 3rd time loads, keeps stockyard unloaded 5 days;
The 4th loads: next batch iron ore is transported to stockyard, and once heap is loaded onto 3.4m, keeps 30 days;
The 4th unloads: all transported by the iron ore that the 4th loads, and keeps stockyard unloaded 5 days;
The 5th loads: next batch iron ore is transported to stockyard, and once heap is loaded onto 3.4m, keeps 30 days;
The 5th unloads: all transported by the iron ore that the 5th loads.
Meet the overall piling prepressing in stockyard; Subregion carries out piling prepressing by stage echelon, and preloading process constantly adjusts subregion, finally reaches overall evenly precompressed.
When ore is marched into the arena, scene must have special messenger to command haulage vehicle, guarantees prefabricating load intensity, forbids to exceed designing requirement, prevents place ground squeeze and destroy; During piling prepressing, detailed record is done to preloading partitioning scenario, prefabricating load intensity and time.Due to ore, to store up the time uncertain, and classification heap is loaded with certain discontinuity, and loading and unloading number of times is more, and in monitored data, reflection obviously.
Embodiment 2:
Adopt nickel ores to carry out a method for piling prepressing as heap material containing, step is:
(1) measuring nickel ores proportion is: 2.0t/m
3, determine that loading total absolute altitude is: 4.3m.
(2), according to engineering geological conditions and instructions for use, determine that preloading time and classification prefabricating load control, maximum load is 2 ~ 2.5 times of service load, and classification ratio is: 1:1:1.5,
The first order loads: the time: 30 days, preloading intensity is to 25KPa, absolute altitude to 1.3m;
The second level loads: the time: 30 days, preloading intensity is to 50KPa, absolute altitude to 2.6m;
The third level loads to divide and carries out for 5 times: about 190 days total times, be no less than 170 days effective time; Preloading intensity is to 85KPa; Absolute altitude is to 4.3m.
The idiographic flow that the third level loads is:
Load for 1st time: reach 4.3m, preloading intensity to 85KPa at top preloading third layer nickel ores to total absolute altitude of second layer nickel ores, keep 30 days;
1st unloading: three layers of nickel ores of institute's preloading all transported, keeps stockyard unloaded 5 days;
The re-loaded: next batch nickel ores is transported to stockyard, and once heap is loaded onto 4.3m, keeps 30 days;
2nd unloading: re-loaded nickel ores all transported, keeps stockyard unloaded 5 days;
Load for 3rd time: next batch nickel ores is transported to stockyard, once heap is loaded onto 4.3m, keeps 30 days;
3rd unloading: the nickel ores that the 3rd time loads all transported, keeps stockyard unloaded 5 days;
The 4th loads: next batch nickel ores is transported to stockyard, and once heap is loaded onto 4.3m, keeps 40 days;
The 4th unloads: the nickel ores that the 4th loads all transported, and keeps stockyard unloaded 5 days;
The 5th loads: next batch nickel ores is transported to stockyard, and once heap is loaded onto 4.3m, keeps 40 days;
The 5th unloads: the nickel ores that the 5th loads all transported.
Embodiment 3:
Adopt manganese ore to carry out a method for piling prepressing as heap material containing, step is:
(1) measuring manganese ore proportion is: 3.5t/m
3, determine that loading total absolute altitude is: 2.5m.
(2), according to engineering geological conditions and instructions for use, determine that preloading time and classification prefabricating load control, maximum load is 2 ~ 2.5 times of service load, and classification ratio is: 1:1:1.5,
The first order loads: the time: 30 days, preloading intensity is to 25KPa, absolute altitude to about 0.7m;
The second level loads: the time: 30 days, preloading intensity is to 50KPa, absolute altitude to about 1.4m;
The third level loads reduction of a fraction and carries out for 4 times: about 170 days total times, 140 days effective time; Preloading intensity is to 85KPa; Absolute altitude is to about 2.5m.
The idiographic flow that the third level loads is:
Load for 1st time: reach 2.5m, preloading intensity to 85KPa at top preloading third layer manganese ore to total absolute altitude of second layer manganese ore, keep 30 days;
1st unloading: all transported by three layers of manganese ore of institute's preloading, keeps stockyard unloaded 10 days;
The re-loaded: next batch manganese ore is transported to stockyard, and once heap is loaded onto 2.5m, keeps 30 days;
2nd unloading: all transported by re-loaded manganese ore, keeps stockyard unloaded 10 days;
Load for 3rd time: next batch manganese ore is transported to stockyard, once heap is loaded onto 2.5m, keeps 40 days;
3rd unloading: all transported by the manganese ore that the 3rd time loads, keeps stockyard unloaded 10 days;
The 4th loads: next batch manganese ore is transported to stockyard, and once heap is loaded onto 2.5m, keeps 40 days;
The 4th unloads: all transported by the manganese ore that the 4th loads.
Embodiment 4:
Adopt Copper Ores to carry out a method for piling prepressing as heap material containing, step is:
(1) measuring Copper Ores proportion is: 3.2t/m
3, determine that loading total absolute altitude is: 2.6m.
(2), according to engineering geological conditions and instructions for use, determine that preloading time and classification prefabricating load control, maximum load is 2 ~ 2.5 times of service load, and classification ratio is: 1:1:1.5,
The first order loads: the time: 30 days, preloading intensity is to 25KPa, absolute altitude to about 0.8m;
The second level loads: the time: 30 days, preloading intensity is to 50KPa, absolute altitude to about 1.6m;
The third level loads reduction of a fraction and carries out for 5 times: about 190 days total times, 150 days effective time; Preloading intensity is to 85KPa; Absolute altitude is to about 2.7m.
The idiographic flow that the third level loads is:
Load for 1st time: reach 2.7m, preloading intensity to 85KPa at top preloading third layer Copper Ores to total absolute altitude of second layer Copper Ores, keep 30 days;
1st unloading: all transported by three layers of Copper Ores of institute's preloading, keeps stockyard unloaded 10 days;
The re-loaded: next batch Copper Ores is transported to stockyard, and once heap is loaded onto 2.7m, keeps 30 days;
2nd unloading: all transported by re-loaded Copper Ores, keeps stockyard unloaded 10 days;
Load for 3rd time: next batch Copper Ores is transported to stockyard, once heap is loaded onto 2.7m, keeps 30 days;
3rd unloading: all transported by the Copper Ores that the 3rd time loads, keeps stockyard unloaded 10 days;
The 4th loads: next batch Copper Ores is transported to stockyard, and once heap is loaded onto 2.7m, keeps 30 days;
The 4th unloads: all transported by the Copper Ores that the 4th loads, and keeps stockyard unloaded 10 days;
The 5th loads: next batch Copper Ores is transported to stockyard, and once heap is loaded onto 2.7m, keeps 30 days;
The 5th unloads: all transported by the Copper Ores that the 5th loads.
Embodiment 5:
Adopt lead-zinc ore to carry out a method for piling prepressing as heap material containing, step is:
(1) measuring lead-zinc ore proportion is: 2.8t/m
3, determine that loading total absolute altitude is: 3.0m.
(2), according to engineering geological conditions and instructions for use, determine that preloading time and classification prefabricating load control, maximum load is 2 ~ 2.5 times of service load, and classification ratio is: 1:1:1.5,
The first order loads: the time: 30 days, preloading intensity is to 25KPa, absolute altitude to about 0.9m;
The second level loads: the time: 30 days, preloading intensity is to 50KPa, absolute altitude to about 1.8m;
The third level loads reduction of a fraction and carries out for 5 times: about 175 days total times, 140 days effective time; Preloading intensity is to 85KPa; Absolute altitude is to about 3.0m.
The idiographic flow that the third level loads is:
Load for 1st time: reach 3.0m, preloading intensity to 85KPa at top preloading third layer lead-zinc ore to total absolute altitude of second layer lead-zinc ore, keep 30 days;
1st unloading: all transported by three layers of lead-zinc ore of institute's preloading, keeps stockyard unloaded 5 days;
The re-loaded: next batch lead-zinc ore is transported to stockyard, and once heap is loaded onto 3.0m, keeps 25 days;
2nd unloading: all transported by re-loaded lead-zinc ore, keeps stockyard unloaded 10 days;
Load for 3rd time: next batch lead-zinc ore is transported to stockyard, once heap is loaded onto 3.0m, keeps 25 days;
3rd unloading: all transported by the lead-zinc ore that the 3rd time loads, keeps stockyard unloaded 10 days;
The 4th loads: next batch lead-zinc ore is transported to stockyard, and once heap is loaded onto 3.0m, keeps 30 days;
The 4th unloads: all transported by the lead-zinc ore that the 4th loads, and keeps stockyard unloaded 10 days;
The 5th loads: next batch lead-zinc ore is transported to stockyard, and once heap is loaded onto 3.0m, keeps 30 days;
The 5th unloads: all transported by the lead-zinc ore that the 5th loads.
The present invention adopts harbour ore (iron ore and other metallic ore) as heap material containing, replaces the heap material containing-mountain skin soil in the past adopted.Change remote pattern of carrying out preloading from transport mountain, mountain area skin stone in the past, gather materials on the spot, achieve reduce costs, the reduction of erection time, energy-conserving and environment-protective object.But owing to limiting by production link, it is uncertain that ore stores up the time, classification heap is loaded with certain discontinuity, and loading and unloading number of times is more, and in monitored data, reflection obviously.
Fig. 2 is that stabilization zone adopts different precompressed mode required time correlation curve figure, and from the different foundation treatment mode time used, the inventive method time is longer, but the effect reached is identical with additive method.Because this method is that ground stabilization is carried out on limit, while carry out ore to store up production, when owner's duration allows, the time is longer, and the economic benefit of generation is higher, and Foundation Treatment Effect is better.
Pore water pressure change curve during Fig. 3 is reinforcing 10 district's preloading, the fully loaded later stage due to repeated loading, unload and fluctuating caused to pore water pressure change curve, but every grade of loading complete after pore water pressure be all in dissipation state, soil solidifying is good.Final pore water pressure dissipation value meets design requirement.
Claims (6)
1. adopt ore to carry out a method for piling prepressing as heap material containing, it is characterized in that: step is:
(1) measure ore proportion, determine to load total absolute altitude;
(2) determine that preloading time and classification prefabricating load control;
The first order loads: the time is greater than 30 days, preloading intensity to 20 ~ 30KPa, absolute altitude to 1.0 ~ 1.5m;
The second level loads: the time is greater than 30 days, preloading intensity to 30 ~ 50KPa, absolute altitude to 1.5 ~ 3.0m;
The third level loads and carries out several times: be greater than 120 days total time; Preloading intensity is to 85KPa; Absolute altitude to 3.0 ~ 4.5m, the idiographic flow that the third level loads is: be loaded on total absolute altitude-all unloadings-unloaded-be loaded on total absolute altitude-all unloadings-unloaded-, carry out successively.
2. employing ore according to claim 1 carries out the method for piling prepressing as heap material containing, it is characterized in that: described ore is ferrous metal ore or nonferrous metallic ores or rare, rare earth metals.
3. employing ore according to claim 2 carries out the method for piling prepressing as heap material containing, it is characterized in that: described ferrous metal ore is iron ore, manganese ore, chrome ore, navajoite stone, titanium ore.
4. employing ore according to claim 2 carries out the method for piling prepressing as heap material containing, it is characterized in that: described nonferrous metallic ores is Copper Ores, lead ore, zinc ore, cobalt ore, nickel ores, tungsten ore, tin ore, molybdenum ore, bismuth mineral stone, mercury ore stone, antimony ore.
5. employing ore according to claim 2 carries out the method for piling prepressing as heap material containing, it is characterized in that: described rare, rare earth metals are tantalum ore stone, niobium ore, beryllium, lithium ore, zirconium ore, caesium ore, rubidium ore, strontium ore, yttrium race rare earth.
6. employing ore according to claim 1 carries out the method for piling prepressing as heap material containing, it is characterized in that: described whole unloadings are all pulled away from stockyard by the ore charge that the first order, the second level, the third level load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510191605.8A CN104912053A (en) | 2014-04-23 | 2015-04-22 | Method for using ores as loading material to perform surcharge preloading |
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| CN201410166372 | 2014-04-23 | ||
| CN2014101663721 | 2014-04-23 | ||
| CN201510191605.8A CN104912053A (en) | 2014-04-23 | 2015-04-22 | Method for using ores as loading material to perform surcharge preloading |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108483056A (en) * | 2018-03-23 | 2018-09-04 | 中交第四航务工程勘察设计院有限公司 | Extensive sand material preloading and the portable belt transport system and method carried of falling |
| CN109655035A (en) * | 2018-12-21 | 2019-04-19 | 中冶集团武汉勘察研究院有限公司 | Closed stock yard safe construction control method on a kind of deep soft soil foundation |
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| SU737563A1 (en) * | 1977-12-12 | 1980-05-30 | Всесоюзный научно-исследовательский институт горной геомеханики и маркшейдерского дела | Method of making vertical drains |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108483056A (en) * | 2018-03-23 | 2018-09-04 | 中交第四航务工程勘察设计院有限公司 | Extensive sand material preloading and the portable belt transport system and method carried of falling |
| CN108483056B (en) * | 2018-03-23 | 2023-07-21 | 中交第四航务工程勘察设计院有限公司 | Mobile belt conveying system and method for large-scale sand and stone material stacking and unloading |
| CN109655035A (en) * | 2018-12-21 | 2019-04-19 | 中冶集团武汉勘察研究院有限公司 | Closed stock yard safe construction control method on a kind of deep soft soil foundation |
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