CN105714759B

CN105714759B - The row that liquefaction collapse is taken precautions against in urban dregs blends reinforcement means

Info

Publication number: CN105714759B
Application number: CN201610133714.9A
Authority: CN
Inventors: 刘照朗
Original assignee: GUANGDONG ANYUAN MINING TECHNOLOGY SERVICE Co Ltd
Current assignee: GUANGDONG ANYUAN MINING TECHNOLOGY SERVICE Co Ltd
Priority date: 2016-03-09
Filing date: 2016-03-09
Publication date: 2018-04-20
Anticipated expiration: 2036-03-09
Also published as: CN105714759A

Abstract

With China's Development of China's Urbanization, the big scale of construction, the urban dregs of high accumulation --- will largely it be produced including garbage stacking yard, this kind of dregs field is since receiving material component is complicated and site complicated condition, if the internal row for thinking little of dregs field blends reinforcing, it may occur that disaster accident as similar Shenzhen dregs field avalanche；Arranging the way oozed is：Add dregs field bottom plate water seepage drainage facility, protective layer is oozed in the layering row of intercepting water and top platform intercepts water, and row oozes protective layer；The way of reinforcing is：Mainly to prediction most dangerous slip surface arc portion position, add layering TGXG and reinforce.

Description

The row that liquefaction collapse is taken precautions against in urban dregs blends reinforcement means

Technical field

The invention belongs to urban construction technical field.

Background technology

The existing Technique Code for Building Slope Engineering in China, non-coal open-pit slope engineering legislation, nonferrous metals ore Mountain refuse dump technical specification etc., is all according to side slope constructing variable and dielectric strength index, discusses nature heap body and artificial heap body Stability and engineering measure in side slope sheaf space category；On December 20th, 2015, Shenzhen light new district Heng Tai industry parks dregs The bitter lesson come down greatly of field, has given our serious warning accident to be not or be not all and constructed by side slope from another angle The landslide disaster that parameter is improper and triggers, but almost the collapsibility of whole heap body caves in,：The local common people claim this disaster that comes down For " collapse mud "；The external cause to lead to a disaster, first, the water barrier condition for the special topography condition and hard bottom plate that depression adopts hole blocks The excretion of bulk water in dregs heap body, second, shapes such as original ponding, periphery underground water, natural precipitation, receiving wet stock are aqueous Into the hydrologic condition of more sources supply dregs body is constantly infiltrated by waterpower, form the part of heap body or even all occur full With and liquefaction, cause dregs field finally to collapse；Its internal cause is then the component of receiving material and complicated, the strong material of water penetration The passage of water body infiltration infiltration is constituted, and hardened clay mud has completely cut off internal water body and has outwards arranged the condition for oozing excretion； China's current art specification is general only to consider that draining is cut in outside, just thinks of stability of slope for this kind of manually heap body in dregs field Property, bottom of slope supporting and retaining system and slope reinforcing are only set, and ooze excretion for the row of the internal water in dregs field and take precautions against the globality of heap building body Liquefaction collapse, does not have established practice method substantially；Accelerate with China's Development of China's Urbanization, the big scale of construction, the urban dregs of high accumulation --- will largely it be produced including this kind of engineering of garbage stacking yard, this kind of dregs field is since receiving material component is complicated and site bar Part is changeable, if the internal row for thinking little of dregs field blends reinforcing, under the compound action of some unfavorable conditions, class can still occur The disaster like as the dregs field avalanche of Shenzhen；The purpose of the present invention is：It is particularly big to the urban dregs of material component complexity The scale of construction, high accumulation dregs field, will add the reinforcing facility of the internal water seepage drainage facility in dregs field and critical position, to ensure the ring in city Border safety and people life property safety.

The content of the invention

For the big scale of construction, high accumulation, material component complexity urban dregs, it is necessary to add row in vivo ooze pumping equipment with The reinforcing facility of critical position, specific practice are：(i) the bottom plate of non-depression site, is organized into suitable hydraulic gradient, sets bottom plate Water seepage drainage facility；Way is：Plate, row's sewer are oozed by suitable spacing, perforation base plate paving drainage pipe, row, arranges and oozes a variety of rows such as wire body Ooze the one or more of facility；It is all finished product earth working material that drainage pipe and row, which ooze plate, is preferably arranged at slightly below floor level；Row is oozed The way of ditch is：Ditching, bottom landfill gravel in ditch, upper strata are followed successively by rubble, microlith, sand and permeable geotextiles, form anti-filter Row oozes structure；Gravel body can be substituted with permeable colored hole pipeline；Row oozes the way of wire body：Just trapezoidal or triangle is banked up with physical features The gravel non-individual body of section, gravel volume surrounding cover rubble, microlith, sand and permeable geotextiles successively, form anti-filter row and ooze structure； Gravel body can be substituted with permeable colored hole pipeline；(ii) to umbilicate type bottom plate, perforation depression hole to terrace outside the venue, sets multilayer to arrange and oozes Pipe or row ooze plate；Though this water seepage drainage facility cannot exclude the low water level water body in depression hole, pore water pressure can be eliminated, is had Soil solidifying in being cheated beneficial to depression, so as to prevent liquefaction of soil mass；(iii) for having covered the pit floor of dregs, using building work The method for the treatment of of soft foundation in journey, is cheated in the soil body to depression with plate machinery and is inserted into drain bar, drain bar also has title drainage belt, is into Product earth working material；(iv) during dregs field landfill is increased, the layering row that intercepts water is set to ooze protective layer, its way is：Layered platform Hydraulic gradient is sorted out, makes waveform perforation groove by suitable spacing, first laying water proof geomembrane, the row of laying on geomembrane Ooze pipe or row oozes plate, penetrate through platform and connected with slope drainage ditch；It is to separate the water body in rainfall and receiving material that it, which is acted on, Slag tap side by side outside the soil body, the anti-downward seepage flow of water-stop body, causes bottom soil body to liquefy；(v) heap receiving in dregs field ends, top of the slope platform The row of intercepting water is set to ooze protective layer, way is：Platform flattens out hydraulic gradient, is first laid with water proof geomembrane, is laid with geomembrane Drainage pipe or row ooze plate, penetrate through outside platform to side slope and are connected with gutter；The row of intercepting water is oozed on protective layer, backfills Reclaimed Soil Layer, implements greening and reclaims；(vi) the reinforcement means of dregs field critical position is：By the most dangerous cunning of technical specification prediction different section Dynamic arc contour line, in the range of the convenient width of the contour line, is laid with layering TGXG；TGXG is finished product geotechnique's material Material, can strengthen soil body shear strength；The way for concentrating on critical position reinforcing is mainly saving expense, to get twice the result with half the effort.

Figure of description explanation：

Figure of description 1 is that the schematic diagram for being layered that the row of intercepting water oozes, critical position reinforces is set in the section of dregs field, figure acceptance of the bid Noting the meaning of symbol is：

1. --- bottom plate water seepage drainage facility, 2. --- protective layer is oozed in the layering row of intercepting water,

3. --- slope drainage ditch, 4. --- the top platform row that intercepts water oozes protective layer,

5. --- prediction most dangerous slip surface arc contour line, 6. --- layering TGXG,

7. --- drainage pipe or row ooze plate, 8. --- water proof geomembrane,

9. --- Reclaimed Soil layer, 10. --- dregs heap body.

Claims

1. the row that liquefaction collapse is taken precautions against in urban dregs blends reinforcement means, its technical characteristic is：

(i) during dregs field landfill is increased, the layering row that intercepts water is set to ooze protective layer；Construction content be：Layered platform arranges water outlet The power gradient, makes waveform perforation groove by suitable spacing, is first laid with water proof geomembrane, drainage pipe or row are laid with geomembrane Plate is oozed, platform is penetrated through and is connected with slope drainage ditch；It is that the water body partition in rainfall and receiving material is slagged tap side by side that it, which is acted on, Outside the soil body, the anti-downward seepage flow of water-stop body, causes bottom soil body to liquefy；(ii) umbilicate type bottom plate, perforation depression are cheated to terrace outside the venue, Multilayer drainage pipe or row is set to ooze plate；Though this water seepage drainage facility cannot exclude the low water level water body in depression hole, can eliminate Pore water pressure, is conducive to the soil solidifying in depression hole, so as to prevent liquefaction of soil mass；(iii) heap receiving in dregs field ends, top of the slope Platform will also set the row of intercepting water to ooze protective layer, and construction content is：Platform flattens out hydraulic gradient, is first laid with water proof geomembrane, soil Drainage pipe is laid with work film or row oozes plate, penetrates through outside platform to side slope and is connected with gutter；The row of intercepting water is oozed on protective layer, backfill Reclaimed Soil layer, implements greening and reclaims；(iv) the reinforcement means of dregs field critical position is：By technical specification prediction different section Most dangerous slip surface arc contour line, in the range of the convenient width of the contour line, is laid with layering TGXG；TGXG is finished product Earth working material, can strengthen soil body shear strength；The way for concentrating on critical position reinforcing is mainly saving expense.