eurhythmic协调的(eurhythm节奏ic).doc

method may be more disadvantageous thanWork.Pass comprehensive analysis, we draw up to adopt well point in the deep well to lower an underground water table.5.2.2Well point in the deep well declines water construction1.because the engineerings underground water table is higher and water measure a little bit greatly, we draw up to adopt well point in the deep well to decline water.The deep well well ordersFollow an engineering radicle the pit around leave a side on good luck of ascent 0.5 ms1.5 ms, present a wreath form decoration;Wells ordering should go deep into to arrive deeply water layer 6 ms9 ms,Usually should also compare the depth of declining water needed deeply several rices, the well is apart from for the 10 ms15 ms.Measure a circumstance to go again according to water while starting construction assuranceThe well point measures.Become a bore adoption the impact drill and protect wall with the mud, the bore constitution protects a tube, in order to prevent the bore caves in, and atA side establishes to line up mire ditch, mud pit.The bore path should compare a big 150 mms of the well tube diameter each side250 mms.Well tube in the deep well sinks before puttingShould pure bore, generally wash well or use to mourn a tube with the compressed air to again and again and up and down take out a mire residue to wash well, or use compressed air and divingThe pump associately washes well.Moreover this engineering can also consider that the stake bore that make use of ground floor outer circle is parts of wells to order.2.The construction craft procedure is:The well orders to measure a fixed position dig a well and Anne to protect a tube drill a hole to take seat drill a hole returnFill the well bottom sand mat layer mourn to put a well tube return to the gravel percolation of filling the well tube and bore wall layer wash well inside the well tube descend establish waterThe pump, gearing pumps water to control electric circuit try to pump water decline water well normal work decline water to complete to pull out a well tube seal well.3.Start construction important point:When the well tube bottom puts, will in advance create a good well tube to lend a Yang with three wood towers the machine cent segment the bottom establish,The cent segment welds firm, keep descend arrive well bottom.The well tube emplacement should try hard for perpendicular and be located in well bore in the center;Take care of a coping ratio naturallyNoodles Gao 500 mm is or so.The well tube percolation part should place at contain water layer adequacy of inside the scope, well tube bottom after going into, in time atWell tube and soil wall fill gravel to filter to anticipate.The grain path is bigger than the bore path of filter net, generally a 3 mmsthe thin gravel with 8 mms.SandThe Li filters to anticipate to match class to go together with a request, design gravel specification up, descend a limit outside of grain Shai in addition to, the qualified rate wants greatly in90%, the impurities content is no bigger than 3%;Can not use to load machine direct filler, the application iron Qiao bottom anticipates, in order to prevent layering asymmetryAnd pound at a well tube, fill to filter to anticipate to want a next 1 m that is continuous to complete, fill mouth of a well from the bottom or so, the upper part adoption doesnt contain freestoneThe clay seals.Tubes around filling sand to after filtering anticipate install water should is by rule to clean first to filter well before the pump, blunt in addition to sink a residue.Generally adoptWash a well method with the compressed air.5.2.3The stake radicle starts constructionThis engineering stake radicle behavior work digs bore to infuse to note a stake.1.Main construction procedure:Dig section 1 stake bore sprinkle section 1 concrete to protect wall two hurl measure in protecting wallElevation and stake ten word stalk line install the movable well cover, the wood Lu Lu support, dismantle a stanza mold and pay section 2 mold and section 2Protect wall to sprinkle to build again and up work preface circulation until design depth the check hold a dint layer the juniors line expand bottom stake the bore is overallAcceptance clean up falsely soil, exclusion to accumulate water(flowing out water to once measure should adopted underwater concrete to sprinkle to build a method while being big) mourn to put reinforcing bar cageStake the radicle examination check and accept.2.Dig a bore method:Dig bore sequence to follow is faced west a row by the east, from in the center to periphery.Digging bore after digging bore first deeply is shallow,The partition jumps the principle for digging and dig bore from artificial from up pursue a layer to use Hao and Qiao to carry on to the bottom, meet strong and tough soil to use hammer and Han broken up.This engineering stake carries into to suffer a stroke to turn rock strata, the rock strata opens to dig the main consideration adoption breeze Hao to carry on.Dig soil order of sequence for dig first in the centerAfter the part surroundings, expand bottom to adopt to dig a body pillar body in the park first for cent, then press expand bottom size from up arrive next pare soil to fix expand a bottom form,Leave soil to pack to go into to live inside the bottom bucket(or basket).The perpendicular conveyance is used wood Lu Lu the thick hemp cordage promote and mourn into after the ground and use cartCarry into a cake of Be piled, then concentrate from from unload a car to carry into construction unit appointed location.While digging bore if meet groundwater, can dig to gather a pond in a side, eject water with the submersible pump, gather pond along with dig bore deepThe increment of the degree but deepen, also need to prepare drum breeze machine and illuminate an equipments.3.Measure a control:Stake stalk the line adopt on the ground to establish ten word control point(the basis orders)s and use first to mourn from the basis pointHemp cordage center and stake line in the bore center of bucket is consistent, with Be dig soil the rough control line is used, while digging into certain depth againFrom ten word basis the point is used to mourn a line hammer ball to make control in the center and sought a park with the Chinese foot pole for week, measure bore by basis point deep, with assurance stake,Bore deeply and cut noodles size exactitude.4.Will process good reinforcing bar to carry into homework noodles, on the spot weld to model, the reinforcing bar cage can be moved bottle gourd with the 1 t orThe 5 t light car takes seat, should keep flection and cage body of reinforcing bar from turning round while mourning to put.5.the concrete sprinkle to build:Stake after bore and reinforcing bar check to check and accept qualified, the square can carry on sprinkling of concrete to build.MixNing soil the match provide through the my unit examinat