STATUS: COMPLETE
HARBOUR AREA TREATMENT SCHEME 2A
Client: Gammon Construction | Drainage Services Division
Location: Hong Kong
Contract Duration: 4 years
Safety Statistics: 1.21 LTIFR
Scope of Works
Vertical excavation works for the Harbour Area Treatment Scheme 2A (HATS 2A), including;
-
Blind sinking 4 shafts ranging from 8m to 12.5m diameter to a depth of 180 metres, establishing off shaft drives and Raise drilling of 7 pipe shafts from surface to underground
-
Designing and fabrication of shaft mucking system to WA Mining Regulations standards to suit both the initial shaft excavation and subsequent tunnel waste rock removal
-
Shaft sinking by hand held methods to a depth of 180m below surface
-
PEG (Pre Excavation Grouting) to 70 bar undertaken systematically during shaft and tunnel advance to prevent water inflows
-
Off shaft development to establish hoisting system and tunnel rail systems
-
Installation of shaft steel work, services and ventilation ducts
-
Housing all operations within a sound attenuating enclosure
-
Installing and commissioning automated hoisting system for tunnel rock extraction.
{"items":["201f97ff-1c36-4022-8835-12213727e279","23d66ca0-3776-429b-ab81-4ee49b453c65","0febe431-c58a-4a2f-b58f-78f0a8e18b97","e48d83ff-3f3c-487c-8342-99e5fdb4cad4","8950ba2b-fbb8-4929-b9a3-ab5c6ccbabff"],"styles":{"galleryType":"Strips","groupSize":1,"showArrows":true,"cubeImages":true,"cubeType":"fit","cubeRatio":1.3333333333333333,"isVertical":false,"collageAmount":0.8,"collageDensity":1,"groupTypes":"1","oneRow":true,"imageMargin":5,"galleryMargin":0,"floatingImages":0,"chooseBestGroup":true,"smartCrop":false,"hasThumbnails":false,"enableScroll":true,"isGrid":false,"isSlider":true,"isColumns":false,"isSlideshow":false,"cropOnlyFill":true,"fixedColumns":0,"enableInfiniteScroll":true,"isRTL":false,"minItemSize":120,"rotatingGroupTypes":"","rotatingCubeRatio":"","gallerySliderImageRatio":1.3333333333333333,"numberOfImagesPerRow":3,"numberOfImagesPerCol":1,"groupsPerStrip":0,"borderRadius":0,"boxShadow":0,"gridStyle":1,"mobilePanorama":false,"placeGroupsLtr":false,"viewMode":"preview","thumbnailSpacings":5,"galleryThumbnailsAlignment":"bottom","isMasonry":false,"isAutoSlideshow":false,"slideshowLoop":false,"autoSlideshowInterval":4,"bottomInfoHeight":0,"titlePlacement":"SHOW_ON_HOVER","galleryTextAlign":"center","scrollSnap":true,"itemClick":"nothing","fullscreen":true,"videoPlay":"auto","scrollAnimation":"NO_EFFECT","scrollDirection":1,"overlayAnimation":"NO_EFFECT","arrowsPosition":0,"arrowsSize":23,"watermarkOpacity":40,"watermarkSize":40,"useWatermark":true,"watermarkDock":{"top":"auto","left":"auto","right":0,"bottom":0,"transform":"translate3d(0,0,0)"},"loadMoreAmount":"all","defaultShowInfoExpand":1,"allowLinkExpand":true,"expandInfoPosition":0,"allowFullscreenExpand":true,"fullscreenLoop":false,"galleryAlignExpand":"left","addToCartBorderWidth":1,"addToCartButtonText":"","slideshowInfoSize":200,"playButtonForAutoSlideShow":false,"allowSlideshowCounter":false,"hoveringBehaviour":"APPEARS","thumbnailSize":120,"magicLayoutSeed":1,"imageHoverAnimation":"NO_EFFECT","calculateTextBoxWidthMode":"PERCENT","textBoxHeight":0,"textBoxWidth":200,"textBoxWidthPercent":50,"textImageSpace":10,"textBoxBorderRadius":0,"textBoxBorderWidth":0,"loadMoreButtonText":"Load More","loadMoreButtonBorderWidth":1,"loadMoreButtonBorderRadius":0,"imageInfoType":"NO_BACKGROUND","itemBorderWidth":0,"itemBorderRadius":0,"itemEnableShadow":false,"itemShadowBlur":20,"itemShadowDirection":135,"itemShadowSize":10,"imageLoadingMode":"BLUR","expandAnimation":"NO_EFFECT","imageQuality":90,"usmToggle":false,"usm_a":0,"usm_r":0,"usm_t":0,"videoSound":false,"videoSpeed":1,"videoLoop":true,"gotStyleParams":true,"selectedLayout":"4|bottom|1|fit|false|1|true","allowSocial":false,"allowDownload":false,"allowTitle":false,"allowDescription":false,"loveButton":false,"loveCounter":false,"showVideoPlayButton":true,"galleryImageRatio":2,"sharpParams":{"quality":90,"usm":{}},"galleryHorizontalAlign":"center","galleryVerticalAlign":"center","imageLoadingWithColorMode":"PICKED_COLOR","imageRatioType":"FIXED","numberOfDisplayedItems":3,"itemBorderColor":{"themeName":"color_15","value":"rgba(0,0,0,1)"},"itemShadowOpacityAndColor":{"themeName":"color_15","value":"rgba(0,0,0,0.2)"},"textBoxBorderColor":{"themeName":"color_15","value":"rgba(0,0,0,1)"},"titleDescriptionSpace":6,"textsVerticalPadding":0,"textsHorizontalPadding":0,"textBoxFillColor":{"themeName":"color_12","value":"rgba(212,212,212,1)"},"alwaysShowHover":false,"isStoreGallery":false,"previewHover":false,"calculateTextBoxHeightMode":"MANUAL","galleryLayout":4,"useCustomButton":false,"customButtonText":"","itemOpacity":{"themeName":"color_14","value":"rgba(96,96,96,0)"},"itemFont":{"style":{"bold":false,"italic":false,"underline":false},"family":"times new roman","preset":"Heading-M","editorKey":"font_5","size":55,"fontStyleParam":true,"displayName":"Basic Heading","value":"font:normal normal normal 55px/1.4em \"times new roman\",times,serif;"},"itemFontSlideshow":{"family":"avenir-lt-w01_85-heavy1475544","displayName":"Basic Heading","style":{"bold":false,"italic":false,"underline":false},"size":22,"preset":"Custom","editorKey":"font_5","fontStyleParam":true,"value":"font:normal normal normal 22px/27px avenir-lt-w01_85-heavy1475544,sans-serif;"},"itemDescriptionFontSlideshow":{"family":"avenir-lt-w01_35-light1475496","displayName":"Paragraph 2","style":{"bold":false,"italic":false,"underline":false},"size":15,"preset":"Custom","editorKey":"font_8","fontStyleParam":true,"value":"font:normal normal normal 15px/18px avenir-lt-w01_35-light1475496,sans-serif;"},"itemDescriptionFont":{"family":"avenir-lt-w01_35-light1475496","displayName":"Paragraph 2","style":{"bold":false,"italic":false,"underline":false},"size":15,"preset":"Custom","editorKey":"font_8","fontStyleParam":true,"value":"font:normal normal normal 15px/18px avenir-lt-w01_35-light1475496,sans-serif;"},"itemFontColor":{"themeName":"color_11","value":"rgba(255,255,255,1)"},"itemFontColorSlideshow":{"themeName":"color_15","value":"rgba(0,0,0,1)"},"itemDescriptionFontColor":{"themeName":"color_11","value":"rgba(255,255,255,1)"},"itemDescriptionFontColorSlideshow":{"themeName":"color_15","value":"rgba(0,0,0,1)"},"loadMoreButtonFont":{"family":"helvetica-w01-light","displayName":"Paragraph 2","style":{"bold":false,"italic":false,"underline":false},"size":17,"preset":"Body-M","editorKey":"font_8","fontStyleParam":true,"value":"font:normal normal normal 17px/1.4em helvetica-w01-light,helvetica-w02-light,sans-serif;"},"loadMoreButtonFontColor":{"themeName":"color_15","value":"rgba(0,0,0,1)"},"loadMoreButtonColor":{"themeName":"color_11","value":"rgba(255,255,255,1)"},"loadMoreButtonBorderColor":{"themeName":"color_15","value":"rgba(0,0,0,1)"},"arrowsColor":{"themeName":"color_11","value":"rgba(255,255,255,1)"},"oneColorAnimationColor":{"themeName":"color_11","value":"rgba(255,255,255,1)"},"responsive":false,"isAccessible":false,"allowLeanGallery":false,"layoutsVersion":2,"selectedLayoutV2":4,"isSlideshowFont":false,"externalInfoHeight":0,"externalInfoWidth":0},"container":{"top":"","bottom":"","left":"","right":"","width":980,"height":426,"position":"","avoidGallerySelfMeasure":true,"galleryWidth":990,"galleryHeight":431,"scrollBase":0}}