2 edition of Field evaluation of hydraulic backfill compaction at the Lucky Friday Mine, Mullan, Idaho found in the catalog.
Field evaluation of hydraulic backfill compaction at the Lucky Friday Mine, Mullan, Idaho
Donald R. Corson
|Statement||by D.R. Corson.|
|Series||Report of investigations (United States. Bureau of Mines) -- 7546|
|Contributions||United States. Bureau of Mines.|
|The Physical Object|
|Pagination||24 p. :|
|Number of Pages||24|
B. Submit planned typical method of excavation, backfill placement and compaction including: 1. Trench widths 2. Procedures for foundation and pipe zone bedding placement, and trench backfill compaction. 3. Procedures for assuring compaction against undisturbed soil when pre-manufactured trench safety systems are proposed. The hydraulic conductivity of hydraulic backfill is several orders of magnitude larger than that of CPB, which contains a large amount of fine particles (hydraulic backfill dissipates quite quickly, leading to the bleeding of a lot of free water from barricades and at the top of the by: 9.
STRUCTURAL EXCAVATION AND BACKFILL - Section Earthwork forms a part of the installation procedures of box culverts, retaining walls, foundations, and substructures. In order to ensure an adequate foundation for such structures, backfill material must meet certain specifications and be compacted by acceptable methods to adequate Size: 78KB. CHAPTER 9 - BACKFILL/COMPACTION GENERAL No pavement cuts will be permitted for any County roadway granted probationary acceptance or overlayed within the previous 5 years. Emergency repairs for broken pipes. cables etc. will be allowed according to the requirements of Chapter
The Quality Assurance Agency will perform tests related to backfill compaction density, moisture content, and inspection of the subgrade. Testing shall be performed and approved for each subgrade and each fill layer before proceeding to the next layer. subgrade compaction (Item or ) use a measurement depth of 12 inches ( mm). When testing compaction of embankment or backfill materials, use a measurement depth of 8 inches ( mm) (other measurement depths may also be used depending on lift thickness and site conditions.).
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[Donald R Corson; United States. Field evaluation of hydraulic backfill compaction at the Lucky Friday Mine, Mullan, Idaho / by D.R. Corson. Field evaluation of hydraulic backfill compaction at the Lucky Friday Mine, Mullan, Idaho /.
Field evaluation of hydraulic backfill compaction at the Lucky Friday Mine, Mullan, Idaho | Corson, Donald R. | ISBN: | Kostenloser Versand für alle Bücher mit Versand und Verkauf duch : Taschenbuch. 15W stope at the Lucky Friday Mine, a deep underground silver mine operated by the Hecla Mining Company near.
Mullan, Idaho. Th is backfill failure was later attributed to a wider than expected stoping span and the presence of flat-lying cold joints in the paste fill.
The cold joints are thought to havereduced the effective thickness of theFile Size: 2MB. PDF | On Jul 1,T. Williams and others published Geomechanics of Reinforced Cemented Backfill in an Underground Stope at the Lucky Friday Mine, Mullan, Idaho | Find, read and cite all.
rials. Experimental results show that hydraulic con-ductivity of the sand–bentonite mixture backfill was in the range of 10 10 to 10 4. Simplified evaluation using Field evaluation of hydraulic backfill compaction at the Lucky Friday Mine volumetric12 m/s for 5–20% bentonite content; it was within 10 strain of montmorillonite’’12 to 10 12 m/s for 30–50% bentonite content.
Experimental results indicate that hydraulic conduc. Excavation, Backfill & Compaction within the Swamp Area 9 of16 My Documents/ Ã ¦ µ¦ nµ Ç/J/ µ ° ª¸«´ Í/Method Statements/Swamp Excavation, Backfill and Compaction Procedure Considering the present condition of the site there is the public canal located approximately 5 meters eastside from the Phenol Size: KB.
Field Compaction: Field compaction of soils is mainly done with various types of rollers. The three most common types of rollers are: 1. Sheepsfoot rollers, used mainly for clayey and Silty Soils.
Smooth-drum rollers, Used primarily for Granular Soils. File Size: KB. NIOSHTIC-2 Publications Search. Search NIOSHTIC Advanced Search Search Help About NIOSHTIC-2 Feedback. Field Evaluation of Hydraulic Backfill Compaction At the Lucky Friday Mine, Mullan, Idaho.
Authors Corson-DR Source NTIS: PB pages. approach for backfill distribution systems by considering the backfill flow behaviour, pipe loop testing, distribution system type and backfill quality control. Hydraulic backfill flow behaviour Before considering the design of a distribution system, it is important to have a thorough understanding of the backfill File Size: KB.
Buy Field evaluation of hydraulic backfill compaction at the Lucky Friday Mine, Mullan, Idaho (Report of investigations / United States Department of the Interior, Bureau of Mines) by Donald R Corson (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : Donald R Corson.
Compaction of backfill materials is normally carried out by mechanical means, to achieve a specified percentage of compactivity. In some cases, hydro-compaction is used for the same : Fathi Shaqour.
3-Hydraulic jack: A hydraulic jack of kg/cm2 maximum capacity (which equivalent to MPa or 23 tons in force unit) with a piston diameter of mm was used to apply the load on the backfill. The piston is connected to hydraulic power supply/control unit which operate manually.
3- Loading Platform: After the tank was filled. Hydraulic backfill design comprises an involved procedure which should consider an evaluation of the backfill function and target properties, aggregate design, materials handling and cementing agent requirements.
This paper presents a design rationale which is intended to serve as a reference to practising mine by: 5. ri / field evaluation of hydraulic backfill compaction at the lucky friday mine, mullan idaho, pb, $ 30 ri / preparing copper powder from cemented copper, pb, $ 28 ri / a three-dimensional dynamic programming method for optimal ultimate open pit design, pb, $ EXCAVATION, BACKFILL AND FILL FOR STRUCTURAL FACILITY AND UTILITY SYSTEMS PART 1 - GENERAL SCOPE OF WORK: A.
The work included under this Section consists of furnishing material and equipment, and performin g al l labor nec ess ary for excav ati ng, bac kf illing, filling and compa cti on of area s to beFile Size: 38KB.
The granular backfill shall be placed in layers not to exceed mm in depth and each layer shall be thoroughly compacted by means of packers or mechanical tampers to a relative compaction of not less than 95% Standard Proctor Density for the backfill material at optimum moisture content.
Type 2 - File Size: 33KB. EVALUATION OF COMPACTION METHODS FOR PIPE TRENCH BACKFILL IN AREAS OF HIGH WATER TABLE. Determining the density of backfill material and attaining the desired degree of compaction in the backfill under a high water table, typical operations in South Florida, present a difficult problem to the Florida Department of Transportation (FDOT) engineers and contractors.
3. Hydraulic compaction of fills cannot be considered equivalent to methods where layer construction permits proper compaction as filling progresses. Working with marsh fills often involves sand bodies more than ft wide and 75 ft deep, as com pared to the units of 6-or 8-in.
layers tested in conventional compaction control oper Size: 2MB.The biggest Civil Engineering portal on the internet. This site is made for educational purpose so as to help the fellow civil engineering students and Field Engineers to spread the knowledge about the latest civil engineering projects, QS, Land Surveying, QA/QC Civil Engineering and softwares.Type 1 – Granular Backfill and Type 2 – Culvert Gravel Supplying and placing of granular backfill and culvert gravel will be measured on a mass basis of hauled material.
Weigh scale tickets for each truck shall be provided to the Engineer or his representative for verification and approval prior to unloading of backfill material.