Analysis of stratum grouting influence on shaft lining stress with the methods of simulation and in site measurements

Zhao, Guozhen; Zhou, Guobing; Zhong, Guosheng; Zhu, Fei; Liang, Hengchang

doi:10.1016/j.proeps.2009.09.079

Cited by 8 publications

(2 citation statements)

References 1 publication

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“…Failure of Shaft Linings. According to the characteristics of nonmining deformation failure of shaft linings, it is in the state of three-dimensional stress and its damage is the result of the vertical pressure, radial pressure, and circumferential pressure [34,35]. e radial pressure of the internal wall is zero, that is, it is in the state of two-dimensional stress.…”

Section: Ultimate Forced State Response Model For the Deformationmentioning

confidence: 99%

Deformation Monitoring and Stability Analysis of Shaft Lining in Weakly Cemented Stratum

Lyu

Wang

2018

Advances in Civil Engineering

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Shaft linings in thick weakly cemented stratum have the disadvantages of large deformation and repeated damage after repair. Considering the typical geologic characteristics and the failure characteristics of shaft linings, we establish a multilayer automatic deformation monitoring system in this paper, and the monitoring system can realize the real-time, continuous, and long-term dynamic monitoring on shaft linings. Based on the concrete strength failure criterion under biaxial compression and the analytical solution for spatially axisymmetric problem of thick-wall cylinders, the damage limit of the shaft lining in Xieqiao coal mine is obtained. Then, we choose three sections as the test area according to the typical damage forms of shaft linings to carry out the monitoring scheme on the auxiliary shaft in Xieqiao coal mine. The monitoring results show that the extreme value of the shaft lining deformation is 2.369 mm. And the shaft lining located in the border between the floor aquifer and the bedrock generates the most severe deformation, which is about 89.4% of the deformation limit. The shaft lining deformation increment fluctuates in certain range, which belongs to elastic deformation. Finally, we inverse the stress state according to the deformation value of the shaft lining, and the obtained additional stress is found to be lower than the ultimate compressive strength. Long-term project practice confirms that the deformation monitoring results can reflect the real stress condition of the shaft lining and that the monitoring system can realize the real-time dynamic evaluation for the status of the shaft lining.

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Section: Ultimate Forced State Response Model For the Deformationmentioning

confidence: 99%

Deformation Monitoring and Stability Analysis of Shaft Lining in Weakly Cemented Stratum

Lyu

Wang

2018

Advances in Civil Engineering

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“…Cohen et al 3 analyzed the cavity expansion pressure under the generalized yield criterion and obtained the limit expansion pressure. Zhao et al 4 obtained the relationship between grouting pressure and radial stress by comparing field-measured data with numerical simulation results. Dai et al 5 discussed the effect of the pore water pressure, permeability resistance, and initial grouting pressure on the grouting pressure dissipation with the theory of fluid mechanics and elastic mechanics.…”

Section: Introductionmentioning

confidence: 99%

A new approach for the fracture grouting pressure in soil mass

Wang

Zou

Yang

2018

Advances in Mechanical Engineering

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This study focuses on analytical solutions of the fracture grouting pressure. Based on the cavity expansion and fracture grouting mechanism, the small deformation in the elastic zone, large deformation in the plastic zone, and non-associated flow rules are assumed. The solutions of the fracture grouting pressure based on the Unified Strength failure criterion, spatial mobilized plane criterion, Mohr-Coulomb failure criterion, and modified Cambridge model (MMC) are proposed for the large-deformation and small-deformation assumptions, respectively. A parameter analysis was conducted to analyze the differences between large-deformation and small-deformation theories. A comparison of the local test data with theoretical results reveals that the Cambridge model is more suitable for weakly consolidated soil and that the Mohr-Coulomb theory is suitable for over-consolidated soil. For all yield criteria in the study, the analysis indicates that the large-deformation theory has more reliable results than the small-deformation theory. The results in this study can direct the design and operation of fracture grouting.

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A two-dimensional grouting model considering hydromechanical coupling and fracturing for fractured rock mass

Yan

Yao

Luo

et al. 2021

Engineering Analysis with Boundary Elements

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Analysis of stratum grouting influence on shaft lining stress with the methods of simulation and in site measurements

Cited by 8 publications

References 1 publication

Deformation Monitoring and Stability Analysis of Shaft Lining in Weakly Cemented Stratum

Deformation Monitoring and Stability Analysis of Shaft Lining in Weakly Cemented Stratum

A new approach for the fracture grouting pressure in soil mass

A two-dimensional grouting model considering hydromechanical coupling and fracturing for fractured rock mass

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