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8/12/2019 Hydrogeology Term Project - Dewatering System Design for an Excavation Site
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HL_IXLT@JOFPHTMOLMEMOP XLTK QTMNLBX
Rlelj Bijlr
9/9/4192
8/12/2019 Hydrogeology Term Project - Dewatering System Design for an Excavation Site
http://slidepdf.com/reader/full/hydrogeology-term-project-dewatering-system-design-for-an-excavation-site 2/12
4
Xidel mc Bmjtljts
9. @jtrmhubt`mj ......................................................................................................................... 2
9.9. Xflmry .......................................................................................................................... 2
9.4. Kltfmh ijh Issukpt`mjs ............................................................................................ 2
9.2. Lxbivit`mj R`tl Qrmplrt`ls ........................................................................................... 8
4. Ietlrjit`vl Hls`ojs ............................................................................................................. <
4.9. Bmkpir`smj mc Ietlrjit`vl Hls`ojs ijh H`sbuss`mjs .................................................. 0
4.4. _lee Qrmplrt`ls .......................................................................................................... 91
2. Bmjbeus`mj ........................................................................................................................ 94
Tlclrljbls ................................................................................................................................ 94
Xidel mc C`ourls
C`ourl 9. Brmss slbt`mj mc tfl lxbivit`mj. ................................................................................. 8
C`ourl 4. Ilr`ie v`lw mc tfl lxbivit`mj w`tf bmmrh`jitls. ......................................................... 8
C`ourl 2. 4-_lee bmjc`ourit`mj. .................................................................................................. <
C`ourl 8. 4-Hiy Hriwhmwj bmjtmur kip cmr 4-_lee bisl prlpirlh `j _lee^. .......................... 3
C`ourl <. 2-_lee bmjc`ourit`mj. .................................................................................................. ?
C`ourl 3. 4-Hiy Hriwhmwj bmjtmur kip cmr 2-_lee bisl prlpirlh `j _lee^ ........................... ?
C`ourl ?. 8-_lee bmjc`ourit`mj. .................................................................................................. 6
C`ourl 6. 4-Hiy Hriwhmwj bmjtmur kip cmr 8-_lee bisl prlpirlh `j _lee^ ........................... 0
Xidel 9. 4-_lee tlst rlsuets. ........................................................................................................ <
Xidel 4. 2-_lee tlst rlsuets. ........................................................................................................ 3
Xidel 2. 8-_lee tlst rlsuets. ........................................................................................................ 6
Xidel <. Qirikltlrs bmkpirlh ibbmrh`jo tm tfl tlst rlsuets. ................................................... 91
Xidel 8. _lee h`ikltlr rlclrljbls. ........................................................................................... 99
8/12/2019 Hydrogeology Term Project - Dewatering System Design for an Excavation Site
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2
@jtrmhubt`mj
_l fivl dllj isglh tm hls`oj i hlwitlr`jo systlk cmr ij lxbivit`mj s`tl, cmr tfl hlptf mc tfl
lxbivit`mj `s tm om dlemw tfl witlr tidel, wf`bf `s it 4k crmk tfl ormujh surcibl. _itlr tidel
sfmueh dl emwlrlh dlcmrl tfl lxbivit`mj ijh glpt it i sicl hlptf ujt`e tfl ljh mc tfl prmblss.
Xf`s hls`oj prmnlbt `s tm prmpmsl ietlrjit`vl systlks tm wmrg w`tf tfl hlwitlr`jo
rlqu`rlkljts, prlpirlh us`jo tfl _lee^ smctwirl.
9.9. Xflmry
Xfl purpmsl mc tfl hlwitlr`jo `s tm prmv`hl i hry ljv`rmjkljt cmr tfl bmjstrubt`mj wmrg.
Bius`jo `jstid`e`t`ls `c elct `j tfl sm`e, witlr jllhs tm dl tiglj mut mc tfl systlk.
@jtrmhubt`mj mc wlees tm tfl bmjstrubt`mj irli `s mjl mc tfl lis`lst smeut`mjs cmr tf`s purpmsl7
kmrlmvlr, w`tf i ommh hls`oj `t bij iesm dl dmtf bfliplr ijh qu`bglr, bmjs`hlr`jo tfl s`tl
prmplrt`ls ijh tfl prmv`hlh rlstr`bt`mjs.
R`jbl hlwitlr`jo jllhs tm dl bmkpeltlh is qu`bgey is pmss`del, pukp`jo wlees irl tm dl uslh
`j tfl systlk. Hls`oj prmblss w`ee bmjs`hlr tfl pmss`del pukp`jo t`kl, h`sbfirol, embit`mj
ijh quijt`ty mc tfl wlees tm emwlr tfl witlr tidel it elist 2k dlemw tfl peijjlh lxbivit`mj
disl ijh ki`jti`j tf`s elvle cmr is emjo is `t jllhlh.
9.4. Kltfmh ijh Issukpt`mjs
_leepm`jt systlk `s mjl mc tfl prmpmslh wiys tm ut`e`zl `j hlwitlr`jo. Dy ij irriy mc skiee
h`ikltlr wlees, wf`bf irl iesm ci`rey sfieemw, ljbems`jo tfl lxbivit`mj irli tfl witlr `s
pukplh mut mc tfl ormujh. Fmwlvlr, tflrl irl i bmupel mc rlismjs wfy tf`s kltfmh `s jmt tm
dl uslh `j mur bisl.
Xfl c`rst `s tfl ori`j s`zl mc tfl iqu`clr. Oljlrieey tfl spib`jo dltwllj tfl wlees `j tf`s
kltfmh `s ritflr bemsl, bfijo`jo dltwllj 9.< tm 4k cmr skieelr pirt`bels ijh `t olts sfmrtlr is
tfl ori`j s`zl `jbrlisls. Rm, cmr ij ieeuv`ie iqu`clr, prmpmslh wlee spib`jo `s dltwllj 1.<-9.1,
tfus kigls `t `kpribt`bie. Xfl slbmjh rlismj `s tfit tfl hriwhmwj hmlsj‐t usuieey lxbllh
<.<k (BL838, Elbturl #0) dlemw tfl ormujh elvle, wflrl tfl flihlr p`pl `s embitlh. @j mur
bisl, tfl witlr tidel `s it 4k ijh tflrl kust dl it elist <.<k hriwhmwj7 fmwlvlr dlbiusl mc
tfl jiturl mc tfl pm`jt wlees tfly kiy jmt lvlj rlibf tfl witlr tidel.
Xflrlcmrl, tfl hlwitlr`jo kust dl bmjhubtlh w`tf tfl flep mc hllplr ijh prmdidey eirolr
h`ikltlr wlees.
Hllp wlee bmjstrubt`mj `s firhlr ijh kmrl bmstey. R`jbl tflrl irl jm disl vieuls tm bmkpirl
bmsts, tfl slelbt`mj mc tfl mpt`kuk hls`oj sfmueh dl kihl upmj smkl issukpt`mjs. Xflrl irl
tfrll `kpmrtijt pirikltlrs tm dl bmjs`hlrlh wf`bf irl jukdlr mc wlees, h`sbfirol ritls ijh
hurit`mj mc tfl pukp`jo. Fmwlvlr `j tf`s bisl, tfl dis`b issukpt`mj `s tfit tfl bmjstrubt`mj
bmst mc ij ihh`t`mjie wlee `s orlitlr tfij tfit mc ki`jti`j`jo eirolr h`sbfirols cmr i emjolr
t`kl.
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9.2. Lxbivit`mj R`tl Qrmplrt`ls
C`ourl 9. Brmss slbt`mj mc tfl lxbivit`mj.
Xfl oljlrie sltt`jo mc tfl lxbivit`mj s`tl `s prmv`hlh `j tfl C`ourl 9. Mtflr tfij tfl
h`kljs`mjs mc lxbivit`mj, `t `s gjmwj tfit tfl witlr tidel hlptf `s 4k `j ij ujbmjc`jlh
iqu`clr 9<.<k tf`bg. Xfl fyhriue`b bmjhubt`v`ty `s o`vlj is 6k/hiy. (Fmr`zmjtie G> 6k/hiy,
Slrt`bie G> 1.6 k/hiy). Rtmrit`v`ty `s 1.9. Eistey, ibbmrh`jo tm tfl bmjtribt tfl wlees sfmueh dl
it elist 4k iwiy crmk tfl p`t lhols.
C`ourl 4 sfmws tfl bmmrh`jitl peijl prlpirlh tm usl `j tfl _lee^. Xfl mutlr e`k`t `s hriwj cmr
s`kpe`b`ty, tm bmkpeltl tfl irli `jtm (x,y);(4<,<1) w`tf h`kljs`mjs `jh`bitlh.
C`ourl 4. Ilr`ie v`lw mc tfl lxbivit`mj w`tf bmmrh`jitls.
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<
4. Ietlrjit`vl Hls`ojs
Xfl `j`t`ie try w`tf twm wlees (C`o 2) rlibflh tfl k`j`kuk hriwhmwj `j 4 hiys w`tf i
pukp`jo ritl mc 4111k2/h. Xfit wis i cist ipprmibf, sm tfl emjo tlrk bisl wis iesm bflbglh
cmr tfl sikl h`sbfirol ritl, wf`bf tflj cmujh tm dl rlibf`jo tfl dmttmk mc tfl iqu`clr `j is
smmj is slvlj hiys.
C`ourl 2. 4-_lee bmjc`ourit`mj.
X`kl (h) H`sbfirol (k /h) Kix. Hriwhmwj (k)
4 4111 94.49
< 4111 9<.24
? 4111 9<.<1Xidel 9. 4-_lee tlst rlsuets.
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3
C`ourl 8. 4-Hiy Hriwhmwj bmjtmur kip cmr 4-_lee bisl prlpirlh `j _lee^.
Rlbmjhey, i tfrll-wlee systlk wis tlstlh. Embitlh is sfmwj `j tfl C`ourl <, tf`s systlk fih
tm wmrg cmr 4 hiys w`tf h`sbfirols 9211 k2/h tm prmv`hl ljmuof hriwhmwj is i sfmrt-tlrk
sbljir`m wf`bf wis bmjhubtlh cmr tfl 4-wlee bmkpir`smj.
Xm dl idel tm kigl i emo`bie bmkpir`smj, tfl ivlriol h`sbfirol ritl mc tfl 8-wlee bisl, wf`bf
`s 6<1 k2/h, wis iesm tr`lh tm sll fmw emjo `t wmueh tigl tm wmrg ujhlr subf bmjh`t`mjs. Xfl
rlst mc tfl rlsuets irl sukkir`zlh `j tfl Xidel 4.
X`kl (h) H`sbfirol (k2/h)
4 9211
2 9411
8 99<1
3 9911
99 6<1
Xidel 4. 2-_lee tlst rlsuets.
8/12/2019 Hydrogeology Term Project - Dewatering System Design for an Excavation Site
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?
C`ourl <. 2-_lee bmjc`ourit`mj.
C`ourl 3. 4-Hiy Hriwhmwj bmjtmur kip cmr 2-_lee bisl prlpirlh `j _lee^
8/12/2019 Hydrogeology Term Project - Dewatering System Design for an Excavation Site
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Xfl cmur-wlee systlk rlibflh tfl omie `j 4 hiys w`tf i h`sbfirol 011 k2/h ijh glpt pukp`jo
stlih`ey.
C`ourl ?. 8-_lee bmjc`ourit`mj.
X`kl (h) H`sbfirol (k /h)
4-2 011
8 6<1
3 ?<1Xidel 2. 8-_lee tlst rlsuets.
8/12/2019 Hydrogeology Term Project - Dewatering System Design for an Excavation Site
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0
C`ourl 6. 4-Hiy Hriwhmwj bmjtmur kip cmr 8-_lee bisl prlpirlh `j _lee^
4.9. Bmkpir`smj mc Ietlrjit`vl Hls`ojs ijh H`sbuss`mjs
@j ijy bisl tfl wlee bmjstrubt`mj bmst w`ee dl f`oflr tfij mtflr pirikltlrs, sm tfl ietlrjit`vls
wlrl dislh pr`kir`ey mj gllp`jo mjey i clw wlees, cmr wf`bf 4, 2 ijh 8-wlee systlks wlrl
bflbglh.
Xfl cmeemw`jo Xidel < sfmws tfl jukdlr mc wlees ijh pukp`jo hurit`mj w`tf bmrrlspmjh`jo
h`sbfirol vieuls tlstlh iemjo tfl hls`oj prmblss.
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Jukdlr mc _lees H`sbfirol (k2/h) X`kl (h)
4 4111 4-<-?
2 9211 4
99<1 8
6<1 99
8 011 4
6<1 8
?<1 3Xidel 8. Qirikltlrs bmkpirlh ibbmrh`jo tm tfl tlst rlsuets.
C`rst mc iee, tfl lcclbt mc i twm wlee systlk wis tlstlh. Xwm wlees embitlh l`tflr s`hl mc tfl
lxbivit`mj irli, bmuehj‐t kijiol tm rlibf tfl rlqu`rlh hriwhmwj cmr ijytf`jo dlemw
4111k2/h h`sbfirol. @j twm hiys, tfly prmv`hlh ljmuof hriwhmwj cmr tfl wfmel irli7
fmwlvlr, `t wis jmt ij ipprmpr`itl h`str`dut`mj mc tfl bmjl mc hlprlss`mjs7 tfly wlrl pukp`jo
ujjlblssir`ey cist. Bmjslquljtey, `j idmut slvlj hiys tfl kix`kuk hriwhmwj wis rlibflh
`j tfl bemsl v`b`j`ty mc tfl wlees.
Xm dl idel tm kigl ij `j`t`ie bmkpir`smj 2 ijh 8-wlee systlks wlrl tlstlh cmr twm hiys iswlee ijh cmujh tm dl rlibf`jo tfl hls`rlh hriwhmwj vieuls w`tf h`sbfirols 9211k2/h ijh
011k2/h, rlsplbt`vley. Fmwlvlr hul tm emjo tlrk bmkpe`bit`mjs tfl twm-wlee systlk k`oft
biusl, tf`s bisl `s jmt rlbmkkljhlh.
Ictlr tf`s le`k`jit`mj, mtflr twm bisls wlrl tm dl bmkpirlh. It tf`s pm`jt, i hlb`s`mj dltwllj
fiv`jo peus mjl wlee bmjstrubtlh tm gllp tfl prmblss sfmrtlr mr wmrg`jo w`tf tfrll wlees dut
cmr i emjolr plr`mh mc t`kl fih tm dl kihl. @t `s pmss`del tm wmrg w`tf i pukp`jo ritl mc
ipprmx`kitley 6<1 k2/h, dut wf`el `t `s tm tigl 8 hiys cmr 8 wlees tfl bmjstrubt`mj jllhs tm dl
pmstpmjlh cmr ijmtflr wllg w`tf 2 wlees.
@c tflrl wis i pmss`d`e`ty mc prmpms`jo tfl ietlrjit`vls ijh eltt`jo tfl bmkpijy `j bfirol mc
tfl c`jijb`ie suppmrt hlb`hl mj wf`bf `s dlttlr cmr tflk, tfl tfrll ijh cmur-wlee hls`ojs wmueh
dl up cmr `t. Fmwlvlr, s`jbl fiv`jo ijmtflr wlee `s jmt bmjs`hlrlh tm dl clis`del is pirt mc tfl
issukpt`mjs kljt`mjlh it tfl dlo`jj`jo mc tf`s prmnlbt, tfl c`jie hlb`s`mj fis tm dl tfl tfrll-
wlee systlk.
4.4. _lee Qrmplrt`ls
Ij mpt`kuk hls`oj cmr tf`s stuhy rlqu`rls tfl elist jukdlr mc wlees tm ki`jti`j rlismjidel
bmsts. @j tf`s bisl tfl systlk bijjmt iccmrh tm ujhlrom ihh`t`mjie emssls. Xf`s klijs tfl wlees
sfmueh dl cueey pljltrit`jo w`tf eljotf 9?.<k crmk tfl ormujh surcibl tm tfl s`et beiy
dmujhiry.
Xfl h`ikltlr `s hltlrk`jlh us`jo tfl Xidel 92.9 crmk tfl OLML 842 Fyhrmolmemoy Elbturl
Jmtls #3 (Xidel 8).
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Xidel <. _lee h`ikltlr rlclrljbls.
@j tf`s tidel h`ikltlr hlpljhs mj tfl h`sbfirol. Xfl wlee y`leh `jtlrvie wis bfmslj ibbmrh`jo
tm tfl prmpmslh h`sbfirols `j tfl ietlrjit`vl hls`ojs. @j tfl tfrll-wlee bmjc`ourit`mjijt`b`pitlh wlee y`leh ciees kmstey `jtm tfl 696-9091 k2/h `jtlrvies `j bisl mc i cist wmrg`jo
systlk. Dy bmjs`hlr`jo tfl rlqu`rlkljts `j tfl OLML 842 Fyhrmolmemoy Elbturl Jmtls #3
wf`bf siys tfl bis`jo h`ikltlr sfmueh dl ―twm p`pl s`zls eirolr tfij tfl jmk`jie h`ikltlr mc
tfl pukp mr it elist mjl jmk`jie s`zl eirolr tfij tfl pukp dmwes‛, tfl s`zl bij dl tiglj is
412kk mr 2<3 MHkk.
Ibbmrh`jo tm Hr`sbmee (9063), `j ujbmjc`jlh iqu`clrs tfl kix`kuk splb`c`b bipib`ty `s
mdti`jlh dy us`jo tfl emjolst pmss`del sbrllj7 fmwlvlr tfl mpt`kuk bmueh dl rlibflh dy
―sbrllj`jo tfl dmttmk 21-<1 % mc tfl iqu`clr‛. Fl iesm ihhs tfit i ?k sbrllj sfmueh dl
ljmuof, ijh `t c`ts tm tfl 21-<1% `jtlrvie cmr tfl iqu`clr `j tf`s prmnlbt.
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2. Bmjbeus`mj
Xfl prmnlbt wis tm hls`oj i clw ietlrjit`vls cmr hlwitlr`jo mc ij lxbivit`mj irli. Xfl witlr
tidel fih tm dl emwlrlh dlemw tfl lxbivit`mj is qu`bgey is pmss`del ijh ki`jti`jlh it i sicl
lelvit`mj ujt`e tfl ljh mc tfl lxbivit`mj.
Issuk`jo tfit tfl mpt`kuk hls`oj sfmueh bmjs`hlr tfl hr`ee`jo, hlvlempkljt ijh pukp`jo
bmsts, ijh tfit gllp`jo tfl prmblss se`oftey emjolr ritflr tfij ihh`jo ijmtflr wlee tm tfl
systlk wmueh dl i bmrrlbt rmutl tm cmeemw, 2-wlee hls`oj (w`tf tfl wlee embit`mjs prmpmslh `j
tfl C`ourl <) wis bfmslj tm dl ippe`lh tm tfl lxbivit`mj irli. @t `s tm dl wmrglh w`tf pukp`jo
ritls dltwllj 011-9911 k2/h tm dl mj tfl sicl s`hl. Ibbmrh`joey, tfl hlptf ijh h`ikltlr mc
tfl wlees irl hlb`hlh tm dl 9?.<k ijh 412kk, rlsplbt`vley. Xf`s wiy, hlwitlr`jo wmueh tigl
smklt`kl dltwllj <-0 hiys.
Tlclrljbls
Hr`sbmee, C. (9063) Ormujhwitlr ijh _lees, Rt. Qiue> Nmfjsmj H`v`s`mj.
Lrouj, \. K. BL838 Ormujh @kprmvlkljt Elbturl Jmtls #0> Hlwitlr`jo. KLX\.
PizĹbĹo`e, F. & PĹekiz, G, G. OLML 842 Fyhrmolmemoy Elbturl Jmtls #3> Hr`ee`jo,
Hlvlempkljt ijh Bmkpelt`mj mc _itlr _lees. KLX\.