Main engineering problems and countermeasures in ultra-long-distance rock pipe jacking project: Water pipeline case study in Chongqing

Deng, Zhiyun; Liu, Xinrong; Zhou, Xiaohan; Yang, Qian; Chen, Peng; Fuente, Albert de la; Ren, Lianxi; Du, Linxiu; Han, Yafeng; Xiong, Fei; Yan, Ru

doi:10.1016/j.tust.2022.104420

Cited by 30 publications

(2 citation statements)

References 47 publications

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“…The understanding of the rock parameters and geological conditions is beneficial for decreasing the potential for geo-hazards during engineering [25,28,[33][34][35][36]. The physical and mechanical parameters of the rock and soil were tested by collecting soil and rock from the slope of the open pit, making standard soil and rock specimens, using a straight shear meter, a rock shear resistance meter, and a triaxial shear tester.…”

Section: Testing Of Geotechnical and Physical Properties In The Study...mentioning

confidence: 99%

Failure Mechanism and Stability Control Technology of Slope during Open-Pit Combing Underground Extraction: A Case Study from Shanxi Province of China

Shi¹,

Guo

Ding

et al. 2022

Sustainability

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With the development of society, the demand for mineral resources is gradually increasing, and the current situation of decreasing total resources dictates the inevitable interaction between open-pit combing underground extraction (OPUG) in time and space. In this research, we took the Anjialing coal mine in Shanxi Province of China as a case study, and tested the physical and mechanical properties of coal rocks in the laboratory. The similarity criterion was used to build a similar experimental model for the deformation evolution of the slope of the open-pit mine section; the digital scattering method was used to test the influence of the underground mining process parameters on the deformation evolution of the open-pit slope. The results showed that there was an obvious distribution of “three zones” above the mining goaf, namely, a collapse zone, fracture zone, and slow subsidence zone. When the mining face was continuously advanced towards the bottom of the open pit, the supporting stress of the mining face transferred to the side of the open-pit slope. Additionally, large displacement and stress concentration were observed on the slope near the stoping line, which caused the slope body to move along the uppermost part of the slope first, and thereafter along the lower part. Various techniques for slope stability control are discussed, including the optimization of spatial and temporal relationships between open-pit and underground mining, the optimization of mining plans, and the use of monitoring and early warning systems. The results can provide a guide for slope stability control of similar open-pit mines in the process of mining coal resources.

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Section: Testing Of Geotechnical and Physical Properties In The Study...mentioning

confidence: 99%

Failure Mechanism and Stability Control Technology of Slope during Open-Pit Combing Underground Extraction: A Case Study from Shanxi Province of China

Shi¹,

Guo

Ding

et al. 2022

Sustainability

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“…Mud pressure: Mud pressure affects the contact between the pipe and soil, thereby affecting frictional resistance [14,17,18,28]. 6.…”

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confidence: 99%

Development and Field Application of an Automated Pipe Jacking Friction Resistance Identification and Warning System in Construction

Jin,

Wu,

Zheng

et al. 2023

Applied Sciences

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Minimizing frictional resistance is crucial for ensuring the safety and smooth progress of pipe jacking construction. However, due to the unpredictability of geological conditions, it is difficult to grasp the frictional resistance during construction, which poses challenges to safe and smooth construction. In order to reduce the frictional resistance during the process of pipe jacking, an automated pipe jacking friction resistance identification and warning system is thus innovatively proposed. This system uses jacking resistance sensors to identify resistance during the jacking process. When the jacking resistance exceeds a certain threshold, the system will send alerts, which could prompt construction workers to adjust the rheological slurry ratio according to the on-site soil conditions. This system includes the following major components: (1) an analysis of primary factors influencing pipe frictional resistance and a model for resistance calculation, (2) the examination of forces exerted on disturbed soil during pipe jacking construction to determine the optimal placement of resistance sensors, (3) the design and operational principles for an automated resistance identification and warning system, and (4) the application of a slurry shield construction method for resistance reduction. The research has practical significance in providing a reference for developing intelligent pipe jacking and contributing to the improvement in construction safety levels.

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A Modified Jacking Force Model to Predict Sliding Friction Coefficient Considering Partially Developed Arching Effect in Highly Weathered Rocks

Li,

Zhang,

Zhou

et al. 2024

Rock Mech Rock Eng

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Main engineering problems and countermeasures in ultra-long-distance rock pipe jacking project: Water pipeline case study in Chongqing

Cited by 30 publications

References 47 publications

Failure Mechanism and Stability Control Technology of Slope during Open-Pit Combing Underground Extraction: A Case Study from Shanxi Province of China

Failure Mechanism and Stability Control Technology of Slope during Open-Pit Combing Underground Extraction: A Case Study from Shanxi Province of China

Development and Field Application of an Automated Pipe Jacking Friction Resistance Identification and Warning System in Construction

A Modified Jacking Force Model to Predict Sliding Friction Coefficient Considering Partially Developed Arching Effect in Highly Weathered Rocks

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