A review of jet grouting practice and development

Njock, Pierre Guy Atangana; Chen, Jun; Modoni, Giuseppe; Arulrajah, Arul; Kim, Yong Hyun

doi:10.1007/s12517-018-3809-7

Cited by 68 publications

(36 citation statements)

References 121 publications

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“…For the practical applications of water jet technology, jet grouting is a kind of construction technology which gathers the technologies of the water jet and the conventional static-pressure grouting, and it has been widely used for geotechnical engineering, geohazard prevention and controlling and environmental rehabilitation, etc. [15,16]. Moreover, hydraulic mining for the underground solid minerals, water jet can effectively break and cut ores into small pieces and convey them in the form of ore pulp by the pneumatic or hydraulic method to the surface [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Research on the structures and hydraulic performances of the typical direct jet nozzles for water jet technology

Wen

Behbahani

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Water jet technology has been widely used for many years. It is an effective and clean approach for breaking, cutting or cleaning materials. Nozzle is the crucial component for implementing the water jet technology in practice. The structural parameters of nozzle directly determine its hydraulic performance. In the meantime, the nozzle's hydraulic performance directly determines the operational efficiency of water jet technology. The straight cone nozzle and the conical nozzle are two kinds of typical direct jet nozzles, which have been widely used in the practice. Comprehensively using the orthogonal experimental design, CFD numerical simulation, theoretical calculation, experiments of testing the water jets' impact forces and breaking the artificial sandstones, the optimal structural parameters of straight cone nozzle can be obtained. Moreover, the impact force of water jet produced by the straight cone nozzle increases with its outlet diameter increasing significantly. In addition, the cylindrical outlet section of straight cone nozzle is good for improving its hydraulic performance, resulting that its hydraulic performance is better than the conical nozzle.

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Section: Introductionmentioning

confidence: 99%

Research on the structures and hydraulic performances of the typical direct jet nozzles for water jet technology

Wen

Behbahani

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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“…H-PWJT has been widely utilized resulting in remarkable social and economic benefits in several engineering and technical disciplines and may be combined with other technologies to develop new ones [5][6][7][8][9][10][11][12]. For example, the hydraulic coal mining and static pressure grouting technologies are combined to develop the highpressure jet grouting technology, which can be widely used in engineering fields such as rock and soil reinforcement and anti-seepage [13]. Another example of technology merging is the high-pressure water jet breaking technology and its combination with the conventional drill bit to develop the jet drilling technology, which can greatly improve the efficiency of drilling [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…Nozzle is a fundamental component in the implementation of H-PWJT. The exploration of nozzle with good hydraulic performance is a key precondition for the smooth and efficient implementation of H-PWJT and other related technologies as the ones mentioned above [5][6][7][8][9][10][11][12][13][14][15][16]. This study proposes a combination of EB and nozzle's structural design.…”

Section: Introductionmentioning

confidence: 99%

Bionic optimum design of straight cone nozzle and the effectiveness evaluation of reducing fluid resistance

Wen

Chen

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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High-pressure water jet technology is a clean and effective approach to break, cut or clean solid materials. The nozzle's hydraulic performance determines the efficiency and quality of the high-pressure water jet technology implementation. The fluid resistance reduction technology of bionic non-smooth surface is applied to the structural design of the straight cone nozzle successfully. The circular groove is selected as the bionic unit. The selection results in the investigation and development of a bionic straight cone nozzle with the optimum hydraulic performance. Moreover, the separated nozzle machining method is successfully implemented. A comprehensive approach that implements the orthogonal experiment, high-pressure water jets' impact forces testing and range analysis results in the optimization of the bionic straight cone nozzle's structure. The optimal structural parameters of the nozzle as follows: the outlet diameter is 4 mm, length-to-diameter ratio is 2.5, contraction angle is 60°, the circular groove width is 3 mm, the circular groove depth is 2 mm and the circular groove number is 2. In addition, the circular grooves are uniformly arranged on the surface of the straight cone nozzle's internal chamber resulting in reduction of the fluid resistance effectively. Under the same experimental conditions, the impact forces of high-pressure water jets produced by the bionic straight cone nozzles are greater in comparison with the impact forces of high-pressure water jets produced by the ordinary straight cone nozzles. The average rate of fluid resistance reduction of bionic straight cone nozzles is up to 2.33%. Furthermore, the results of CFD numerical simulation show that the circular grooves at the contraction and the outlet sections can also reduce the high-pressure water flow resistance effectively. In the meantime, the opposite rotating vortexes in the circular grooves are the main reason for the reduction in fluid resistance of the bionic straight cone nozzle.

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“…Development of underground space and development of transport network is a distinctive feature of modern urban construction [1][2][3]. Currently, the problem of soil consolidation in new construction, reconstruction and repair of existing buildings and structures is relevant [1,[4][5][6][7][8]. Violation of integrity of structure of consolidated massif of soil is inadmissible in the conditions of dense city building at technological production.…”

Section: Introductionmentioning

confidence: 99%

Micro-Cement for Injection Consolidation of Base Soils

Smirnova*,

Glazev,

Komolov

et al. 2019

IJITEE

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Issues of development of compositions of injectable materials on inorganic basis for underground and transport construction are considered in the paper. Inorganic binders for aqueous suspensions for strengthening of low-strength sandy and debris soils by injection into the fortified massif are proposed. The use of silica gel in combination with hydrated lime for injectable aqueous suspensions is justified. The influence of superplasticizer on the technological properties of suspensions is shown. The properties of micro-cement of different compositions are presented. Optimal ratios of components were determined. The following properties of aqueous suspensions have been studied: viscosity, sedimentation and penetrating power. The viscosity was up to 40 s, sedimentation up to 1.4%. Soil-concrete obtained by injecting the aqueous suspension based on composite binders has the compressive strength in the range of 3.3-6.2MPa.

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A review of jet grouting practice and development

Cited by 68 publications

References 121 publications

Research on the structures and hydraulic performances of the typical direct jet nozzles for water jet technology

Research on the structures and hydraulic performances of the typical direct jet nozzles for water jet technology

Bionic optimum design of straight cone nozzle and the effectiveness evaluation of reducing fluid resistance

Micro-Cement for Injection Consolidation of Base Soils

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