Purchase dams, dam foundations, and reservoir sites 1st edition. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to. This prevents water seepage through the base of the dam, which can damage the dams integrity. Improvement of dam foundation using grouting intensity number gin technique at tannur dam site, south jordan mustafa al kuisi university of jordan. Click on the picture for an enlargement and details. Verifying the ground treatment as proposed by the secondary.
If the surface rock requires strengthening, blanket grouting could be appropriate. As a result, mowrs mosul dam project office is now fully in the lead of improved maintenance grouting operations at mosul dam. Water testing for evaluating and grouting a dam foundation is significantly different than water testing for a tunnel. Giuseppe pittalis alessandro cagiano antonio pietrangeli binyam tesfamariam studio ing. This webinar is intended to provide an introduction to dam foundation grouting for dam regulators, owners, and consultants. It is frequently used at all the other types of dam too and is usually carried out before the dam is built over it. A case study of foundation remediation for dams built on karst foundations by kyla justene erich a thesis presented to the faculty of the graduate school of the missouri university of science and technology in partial fulfillment of the requirements for the degree master of science in geological engineering 20 approved by. Pregrouting ahead of tunnels has three main functions. The new edition of dam foundation grouting has been revised to reflect contemporary grouting practice and has been substantially enlarged to include coverage of geologic considerations and to address remedial grouting issues. The cutoff drifts and the grouting will seal the cracks and joints. Consolidation grouting is a general term for grouting that is carried out within a rock mass with the intent of filling rock mass discontinuities.
A series of holes is drilled in multiple rows along the base of the dam. Pressure grouting is an essential construction procedure that is practiced by contractors and engineers around the world. Used since the 19th century, grouting reduces the amount of leakage through rock for dam foundations and underground works. Over 40,000 cubic meters of grout enough to fill 40 olympic size swimming pools have been pumped into the foundation under the dam during the past three years.
Curtain grouting of the foundations of concrete dams is most effective after completion of the dam, at a time when the full load is being applied to the foundation. Under such circumstances higher pressures may be used in grouting so as to assure maximum travel of grout in all directions along flow paths intersected by grout holes. Thompson, published by the american society of civil engineers, volume 80, separate no. The judy company specializes in cement grouting and foundation repair. However, remediation grouting of the deteriorated embankment earthcore itself has rarely been performed or. A grout curtain is a type of foundation grouting used on dams. Enter your mobile number or email address below and well send you a link to download the free kindle app. Pdf improvement of dam foundation using grouting intensity. It caters for i the drainage of water percolating from upstream face or seepage through the foundations in the dam, ii provides space for drilling and grouting of holes from the floor of the gallery for the main grout curtain, and iii for drilling foundation drain holes after foundation grouting has been completed. Hoover dam marked the development of a systematic approach to dam grouting. Bruce is a chartered civil engineer and fellow of the institute of civil engineers uk, and a licensed eologistengineering geologist us. Wolf creek dam foundation grouting advanced cons tech. The focus of this thesis is to study the possibility of injection grouting of embankment dams affected by internal erosion.
It is frequently used at all the other types of dam too and is usually carried out before. However, when the grout mix and success of the grout operation are known, a backanalysis can be conducted to infer the degree of jointing. Mississinewa dam consists of an 8,000 foot long earth fill embankment, with a maximum height of 140 feet. More drill holes are generally available for testing in dam foundations where seepage potential is the primary concern and grouting is secondary. Grouting at tannur dam in ejge hashemite university. Dam foundation grouting, revised and expanded ken weaver and donald bruce on. Dam foundation grouting at gibe iii dam studio pietrangeli. This phenomenon occurs in the central core of the embankment dam. Since completion in 1966 the dam had experienced numerous seepage problems due to known foundation defects within the rock and consequent ability of the overburden foundation and embankment materials to migrate into the bedrock. Click download or read online button to get dam foundation grouting book now. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Mosul dam task force celebrates mission completion.
The new edition of dam foundation grouting has been revised to reflect contemporary grouting practice and has. Center hill dam foundation grouting advanced cons tech. And also to fill the clearance of structures injecting grout material. Jul 17, 2017 a grout curtain is a type of foundation grouting used on dams.
Call 9 4225088 to speak with one of our engineers or geologists for a free quote. Dam foundation grouting, revised and expanded civil. The new edition of dam foundation grouting has been revised to reflect contemporary grouting practice and has been substantially enlarged to include coverage of geologic considerations and to. Dam foundation grouting the water used in the grout shall be furnished by the contractor. In dam rock foundations, grouting is performed to improve the. In the liyutan dams groutcurtain construction, the grout holes were of the splitspacing type. Jun 16, 2019 as a result, mowrs mosul dam project office is now fully in the lead of improved maintenance grouting operations at mosul dam. Foundation grouting, mcnary dam, oregon and washington.
It is difficult to accurately estimate the improvements brought about by grouting, because the grouting is applied in the rock mass where it is not visible. Construction and quality analysis of curtain grouting in foundation of dam for. The drainage hole pattern will relieve the water that may. Doc improvement of dam foundation using grouting intensity. In addition to providing extensive information on grouting technology, equipment, and procedures, it also provides. Dam foundation grouting revised and expanded edition by kenneth d. Dam grouting is a proven methodology for installing upgradient and downgradient barriers in dam foundations. Advanced construction techniques was awarded this project by the u.
Foundation excavation dam construction on unconsolidated deposits grouting operations in bedrock. If a gallery is provided, then a series of drain holes will be drilled from the gallery and located just downstream of. This grout curtain may be constructed by drilling and grouting from a gallery within the dam, from the top of a specified thickness of concrete, or from the top of foundation rock. Grout is injected into these holes to form a waterproof curtain. Estimating cement take and grout efficiency on foundation. This technique is employed where the rock formation beneath the existing or proposed dam foundation is so pervious that seepage problems are expected. Foundation treatment for earth dams on rock, by mr. Topics covered will include determining the need and applicability of grouting, types of foundation grouting, an explanation of the grouting process including common variations in grouting techniques, grout mixes, and recent advancements in grouting technology. Basically, in grout improvement, a dam foundation that has a high lugeon value requires more cement take. Lockington dam foundation pressure grouting geosolutions 20170618t16. Grouting, drainage, and excavation of cutoff drifts and backfilling them with concrete.
Brennan company specializes in dam construction projects throughout united states. This book focuses on the permeability of the foundation of dams, how to. Revised and expanded edition provides a stateofthe practice. Get your kindle here, or download a free kindle reading app. He has authored over 300 technical papers and three textbooks, most recently dam foundation grouting with weaver. Army corps of engineers of nashville district through a best value rfp selection process. Rock grouting at dam sites friedrichkarl ewert springer. Foundation grouting and drainage of dams national driller. If a gallery is provided, then a series of drain holes will be drilled from the gallery and located just downstream of the grout curtain. In this application, these barriers are often called grout curtains. The job marked the acceptance of cement grouting as a normal feature at dams for both foundation grouting and for grouting the contraction joints between the concrete blocks forming the dam. The grouting works foresee the execution of a double grout curtain line along the dam axis, from both the. This site is like a library, use search box in the widget to get ebook that you want. Remedial injection grouting of embankment dams with non.
Citeseerx document details isaac councill, lee giles, pradeep teregowda. Citeseerx investigation on dam foundation grouting. Revised and expanded edition provides a stateofthepractice. The process involves injecting a grout material to fill the discontinuities, which are the pathways through which fluids or gases migrate in most rocks. The dam foundation rock mass, at the baihetan hydropower station on the jinsha river, is mainly columnar jointed basalt, with faults and fissures developed. This value shows the degree of permeability in the dam foundation. The foundation treatment of glen canyon dam consists of three parts. It shall be fresh, clean and free from injurious amounts of sewage, oil, acid, alkali, salts, or organic matter.
The grouting intensity number gin method was used for the first time in the foundation treatment of the tannur dam site, the first of its kind of foundation treatment in jordan. Dams, dam foundations, and reservoir sites 1st edition. Aug 01, 2005 this grout curtain may be constructed by drilling and grouting from a gallery within the dam, from the top of a specified thickness of concrete, or from the top of foundation rock. In the liyutan dam s groutcurtain construction, the grout holes were of the splitspacing type. In dam rock foundations, grouting is performed to improve watertightness and reinforce weak parts. Dam foundation grouting download ebook pdf, epub, tuebl, mobi. This type of grouting strengthens an area rather than forming a curtain as shown above.
Holes are drilled at shallow as well as deep and cement grouting is filled to establish an effective barrier to seepage under the dam and to consolidate the foundation. The illustration shows its use at the foundation of a concret gravity dam. Considering adverse factors such as the unloading relaxation or the opening of the fissures due to excavation blasting, consolidation grouting is needed to improve the integrity of the dam foundation rock mass. Grouting methods are known to effectively remediate the dam foundation or the abutment. Internal erosion is a process where certain soil material from an embankment dam is removed. Construction and quality analysis of curtain grouting in foundation. Citeseerx investigation on dam foundation grouting process.