New development of hydraulic fracturing technique for in-situ stress measurement at great depth of mines

Cai, Meifeng; Hua, Peng; Ji, Hongguang

doi:10.1016/s1005-8850(08)60268-6

Cited by 18 publications

(14 citation statements)

References 3 publications

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“…The abandoned workings of already mined-out parts are also a significant source of methane emissions. Considering that this latter methane source is typically present for a much longer time than the average lifetime of faces or entry driving, the exhaled methane amount can be treated as the residual gas capacity [15][16]. Taking this into account, the residual gas capacity can be determined using the method of complex gas balance of mines, namely, the 'Express' method.…”

Section: Descriptionmentioning

confidence: 99%

Prognosis of residual coal gas capacity made by the ‘Express’ method

Prokop

Zapletal

Pěgřímek

2011

Int J Miner Metall Mater

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An easy, reliable, and inexpensive method, called 'Express' method, was described to determine the residual gas capacity of deep mines using results from an air and gas balance. Air and gas balances are common elements of mine management and must be performed periodically. Using the process described here to obtain balance results, it is straightforward to obtain the residual gas capacity, which is an important parameter for decision-making in current mine operations. After a mine is closed, the residual gas capacity becomes a dominant factor used to select methods to protect against gas emissions from the closed underground area or perhaps to provide information for the use of gas reserves. The proposed 'Express' method is a much simpler method to obtain the residual gas capacity than other procedures used for this purpose to date.

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Section: Descriptionmentioning

confidence: 99%

Prognosis of residual coal gas capacity made by the ‘Express’ method

Prokop

Zapletal

Pěgřímek

2011

Int J Miner Metall Mater

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“…Recently, with the processive development of new directions and demands in geotechnical engineering, especially marine geotechnical engineering, many international research institutions (e.g., University of British Columbia, Georgia Institute of Technology, Delft University, and Southeast University) and professional in situ test instrument development companies (e.g., Hogentogler, Vertek, ConeTec, and Furgo Corporation) have developed new sensors for CPTU. These new CPTU sensors promote the CPTU test method to develop in the direction of multi-functionality [10,[19][20][21][22][23][24], which further broadens the application field of the CPTU. Figure 1 shows a schematic diagram of the internal structure of a common CPTU.…”

Section: Introductionmentioning

confidence: 99%

The Practice and Development of T-Bar Penetrometer Tests in Offshore Engineering Investigation: A Comprehensive Review

Qiao

Liu

et al. 2023

JMSE

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In recent years, the development of marine hydrocarbon resources has led to an increased demand for research on the marine soil bearing capacity and cyclic loading effect in marine engineering design. Because of the difficulties and high costs involved in obtaining high-quality soil samples from offshore sites, in situ testing techniques have become the preferred method of determining design parameters in offshore geotechnical engineering projects. This paper provides a review of the current state of marine penetrometer deployment technology used in offshore engineering investigations and presents a summary of the T-bar penetrometer test for measuring marine soft clay. The existing literature research on penetration mechanisms, numerical simulations, laboratory experiments, and field tests of the T-bar penetrometer in the field of marine geotechnical engineering are analyzed. Finally, the potential difficulties, challenges, and prospects of the T-bar penetrometer tests are discussed.

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“…One of the technologies used in the extraction of natural resources is hydraulic fracturing (HF). The following tasks can be solved using HF: intensification of oil and gas production [1], degassing of coal seams [2], softening of rocks [3,4], creation of anti-seepage layers around mine workings [5], determination of the stress state of the environment [6,7]. The hydraulic fracturing method is based on the ability to create cracks inside a rock mass by pumping fluid into it.…”

Section: Introductionmentioning

confidence: 99%

Modeling of hydraulic fracture in a medium containing a hollow inclusion

Azarov

Serdyukov

Patutin

2022

IOP Conf. Ser.: Earth Environ. Sci.

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In this work, the problem of the development of a hydraulic fracture crack near a circular cavity in a three-dimensional homogeneous elastic medium is considered. The results of numerical calculations performed using the extended finite element method (XFEM) implemented in the ABAQUS software package are presented. Various variants of the position of the initial disk crack relative to the cavity are considered. Some regularities of the development of a three-dimensional hydraulic fracture near the cavity have been found.

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New development of hydraulic fracturing technique for in-situ stress measurement at great depth of mines

Cited by 18 publications

References 3 publications

Prognosis of residual coal gas capacity made by the ‘Express’ method

Prognosis of residual coal gas capacity made by the ‘Express’ method

The Practice and Development of T-Bar Penetrometer Tests in Offshore Engineering Investigation: A Comprehensive Review

Modeling of hydraulic fracture in a medium containing a hollow inclusion

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