Controlled Curved Drilling Technique in the Permeation Grouting Method for Improvement Works of an Airport in Operation

Takano, Seiki; Hayashi, Kentaro; Zen, Kouki; Rasouli, Rouzbeh

doi:10.1016/j.proeng.2016.06.068

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…The grouted sand has an unconfined compression strength of, typically, qu = 300-500 kPa. Rasouli et al [11][12] grouted the liquefiable foundation of the runway of Fukuoka International Airport through a newly developed controlled-bending drilling rig to permeate the liquefaction foundation, to achieve controlled osmotic grouting under the runway and to eliminate other operational disturbances (Fig. 2).…”

Section: Methods Of Changing the Structural Properties Of Soilmentioning

confidence: 99%

Study on the treatments and countermeasures for liquefiable foundation

Deng-hua

2019

MATEC Web Conf.

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This paper summarizes the current treatments and countermeasures for liquefiable foundations, and divides the existing anti-liquefaction countermeasures into two categories. One of the ideas is proceeding from the properties of liquefiable foundation soils, by the means of improvement for the soil’s qualities to enhance the capacity of soil’s anti-liquefaction in the early stage. The other idea is considering from the stress conditions of liquefiable foundation soils, and to reduce the liquefaction-induced disasters by changing the stress conditions of the soil. The advantages and disadvantages of various anti-liquefaction measures were analysed by verifying the effectiveness of field applications of anti-liquefaction measures against ground liquefaction hazards, and the applicable conditions of various anti-liquefaction measures were classified. This paper provides experience for resisting soil liquefaction disasters.

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Section: Methods Of Changing the Structural Properties Of Soilmentioning

confidence: 99%

Study on the treatments and countermeasures for liquefiable foundation

Deng-hua

2019

MATEC Web Conf.

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“…According to [32] this method consists in the injection of chemical products to improve liquefiable soils (Fig. 9, 10).…”

Section: Silica Injection Using Curved Grouted Penetration Techniqmentioning

confidence: 99%

“…In addition, the standard penetration test [4][5][6][7] is the most usual method to analyze liquefaction risk due to the abundant data to correlate N value with other parameters such as the shear resistance of the soil. Likewise, there are numerous techniques of pre-and post-evaluation to improve the properties of the soil (density, drainage and resistance) and reduce the risk of damage to the construction [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Prediction methods of liquefaction phenomenon and mitigation strategies

Araujo¹,

Palinginis²,

Ruiz³

2018

Proceedings of the 16th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Innovation in Educat

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The main objective of this research is to present a review about methods of analysis and mitigation in soil liquefaction, especially in those of sandy and loose density soils. The experience of different researchers shows that the most suitable methods of analysis are those that are based on "in situ" tests data while preserving the soil properties, especially those based on the use of SPT (Standard Penetration Test) because of the greatest existing data. Likewise, the most suitable mitigation methods is using gravel drains due to several advantages that improve liquation resistance, increasing the densification of soil, improving the drainage (quickly dissipates the interstitial pressures in an earthquake) and reduces cyclical tangential stress (which contributes to liquefaction) due to flexibility of the gravel pack.

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“…Grouting theory is the basis for the study of slurry diffusion rules, which can provide guidance for the design and implementation of grouting engineering [17][18][19][20][21][22]. The existing grouting theories mainly include pore rock mass grouting theory [23], fractured rock mass grouting theory [24], fracturing grouting theory [25], compaction grouting theory [26], and dynamic water grouting theory [27]. Theoretical analysis is an effective means to study the rules of slurry diffusion, in which the rule of slurry flow in a single fracture is the basis of the study of slurry diffusion rules.…”

Section: Introductionmentioning

confidence: 99%

Diffusion Mechanism of Slurry during Grouting in a Fractured Aquifer: A Case Study in Chensilou Coal Mine, China

Zhai

Bai

2022

Mathematics

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Grouting is one of the main technical means to prevent water inrush hazards in coal seam floor aquifers. It is of great significance to elucidate the diffusion law of slurry in the process of grouting in fractured aquifers for safe mining in coal mines. In this paper, the mechanism of slurry diffusion in horizontal fractures of fractured aquifers was studied based on the Bingham slurry with time-varying characteristics; additionally, a one-dimensional seepage grouting theoretical model considering the temporal and spatial variation of slurry viscosity under constant grouting rate was established. In this model, the grouting pressure required by the predetermined slurry diffusion radius can be obtained by knowing the grouting hole pressure and injection flow. Slurry properties, fracture parameters, grouting parameters, and water pressure were the parameters affecting the slurry diffusion process. Looking at the problem of water disaster prevention of coal seam floor in the Working Face 2509 of the Chensilou Coal Mine, according to the aquifer parameters and model calculation results, a grouting scheme with a slurry diffusion radius of 20 m and grouting pressure of 12 MPa was proposed. Finally, with the comparative analysis of the transient electromagnetic method (TEM) and water inflow before and after grouting, it was verified that the design grouting pressure and the spacing of grouting holes were reasonable and the grouting effect was good.

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Controlled Curved Drilling Technique in the Permeation Grouting Method for Improvement Works of an Airport in Operation

Cited by 5 publications

References 2 publications

Study on the treatments and countermeasures for liquefiable foundation

Study on the treatments and countermeasures for liquefiable foundation

Prediction methods of liquefaction phenomenon and mitigation strategies

Diffusion Mechanism of Slurry during Grouting in a Fractured Aquifer: A Case Study in Chensilou Coal Mine, China

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