scholarly journals Characteristics of the In Situ Stress Field in the Yadian Coal Mine, Central China: Implications for Roadway Differential Deformation

ACS Omega ◽  
2020 ◽  
Author(s):  
Huibin Liu ◽  
Bo Jiang ◽  
Wanying He
Keyword(s):  
Stress Field ◽  
Coal Mine ◽  
In Situ Stress ◽  
Central China ◽  
In Situ Stress Field

Characteristics of in situ stress field at Qingshui coal mine

2015 ◽  
Vol 25 (3) ◽  
pp. 497-501 ◽  
Author(s):  
Xiaojie Yang ◽  
Jiewen Pang ◽  
Haopeng Lou ◽  
Lipeng Fan
Keyword(s):  
Stress Field ◽  
Coal Mine ◽  
In Situ Stress ◽  
In Situ Stress Field

Measurement and the Distribution Law of In Situ Stresses at Deep Depth of Xingcun Coal Mine

2012 ◽  
Vol 450-451 ◽  
pp. 1601-1607 ◽  
Author(s):  
Jiong Wang ◽  
Zhi Biao Guo ◽  
Feng Zhou ◽  
Feng Bin Su ◽  
Bao Liang Li
Keyword(s):  
Stress Field ◽  
Principal Stress ◽  
Coal Mine ◽  
Stress Measurement ◽  
In Situ Stress ◽  
Distribution Law ◽  
Principal Stresses ◽  
In Situ Stress Measurement ◽  
In Situ Stress Field

Many kinds of in situ stress measurement methods are used nowadays, two most common of which are the overcoring and the hydraulic fracturing methods. In order to study the distribution law of in situ stress field in the deep position of Xingcun coal mine, 4 points of in situ stress measurement were carried out in underground roadways at the -1200 m level adopting the overcoring method. The hollow included technique was used to measure the 4 points of in-situ stress. According to the analysis of the measurement data, the results indicated that: (1) Among the three principal stresses on all measurement points, two principal stresses were nearly horizontal and one was nearly vertical. Furthermore, the maximum horizontal principal stress was more than the vertical principal stress, and the magnitude of vertical stress was equal to the weight of overburden rock mass;(2)The value of the maximum horizontal principal stress reached 52.3 MPa , the directions mainly concentrated on the extension of N42°W – N85°W, and the obliquity mainly concentrated on the extension of -29° – 10°;(3)The ratio of maximum horizontal principal stress to vertical principal stress was 1.42 - 1.64 with an average value of 1.55. The result presented that the in situ stress field in Xingcun coalmine at the depth of -1200m was dominated by tectonic horizontal stress. According to the results above, we gained the in situ stress states and the distribution law in the measured region. At the same time, it can offer reasonable basic parameters for underground roadway layout and support design of Xingcun coalmine.

scholarly journals A Workflow to Predict the Present-day in-situ Stress Field in Tectonically Stable Regions

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Wei Ju ◽  
Ke Xu ◽  
Jian Shen ◽  
Chao Li ◽  
Guozhang Li ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Stress Field ◽  
Ordos Basin ◽  
Simulation Method ◽  
In Situ Stress ◽  
Wellbore Stability ◽  
Central China ◽  
Geometric Framework ◽  
In Situ Stress Field

Knowledge of the present-day in-situ stress distribution is greatly important for better understanding of conventional and unconventional hydrocarbon reservoirs in many aspects, e.g., reservoir management, wellbore stability assessment, etc. In tectonically stable regions, the present-day in-situ stress field in terms of stress distribution is largely controlled by lithological changes, which can be predicted through a numerical simulation method incorporating specific mechanical properties of the subsurface reservoir. In this study, a workflow was presented to predict the present-day in-situ stress field based on the finite element method (FEM). Sequentially, it consists of: i) building a three-dimensional (3D) geometric framework, ii) creating a 3D petrophysical parameter field, iii) integrating the geometric framework with petrophysical parameters, iv) setting up a 3D heterogeneous geomechanical model, and finally, v) calculating the present-day in-situ stress distribution and calibrating the prediction with measured stress data, e.g., results from the extended leak-off tests (XLOTs). The approach was successfully applied to the Block W in Ordos Basin of central China. The results indicated that the workflow and models presented in this study could be used as an effective tool to provide insights into stress perturbations in subsurface reservoirs and geological references for subsequent analysis.

Measurement and the Distribution Law of In Situ Stresses of Tingnan Coal Mine

2013 ◽  
Vol 275-277 ◽  
pp. 282-285
Author(s):  
Jiong Wang ◽  
Yang Liu ◽  
Zhi Biao Guo ◽  
Jie Wen Pang ◽  
Bin Liu
Keyword(s):  
Stress Field ◽  
Coal Mine ◽  
Stress Measurement ◽  
Tectonic Stress ◽  
In Situ Stress ◽  
Dominant Factor ◽  
Distribution Law ◽  
In Situ Stress Measurement ◽  
In Situ Stress Field

In order to study the distribution law of in situ stress field of Tingnan coal mine, 4 points of in situ stress measurement were carried out in underground roadways at the -450 m level with the overcoring method. The KX-81 type cell was used to measure the 4 points of in-situ stress. According to the analysis and calculation of the measurement result, the dominant factor of the in situ stress field in Tingnan coal mine at the depth of -450m is horizontal tectonic stress.

Measurement and the Distribution Law of In Situ Stresses at Deep Depth of Hongyang Coal Mine

2013 ◽  
Vol 671-674 ◽  
pp. 65-68
Author(s):  
Hong Man Xia ◽  
Jiong Wang ◽  
Yang Liu ◽  
Jie Wen Pang ◽  
Dong Qiao Liu ◽  
...  
Keyword(s):  
Stress Field ◽  
Coal Mine ◽  
Stress Measurement ◽  
Measurement Data ◽  
Tectonic Stress ◽  
In Situ Stress ◽  
Distribution Law ◽  
In Situ Stress Measurement ◽  
In Situ Stress Field

There are many in situ stress measurement methods nowadays, the ISRM suggested two methods for in situ stresses measurement: overcoring methods and the hydraulic fracturing methods. In order to study the distribution law of in situ stress field in the deep position of Hongyang coal mine, 3 points of in situ stress measurement were carried out in underground roadways at the -870 m level adopting the overcoring method. The KX-81 type gauge was used to measure the 3 points of in-situ stress. According to the analysis and calculation of the measurement data, the result showed that the in situ stress field in Hongyang coal mine at the depth of -870m was dominated by horizontal tectonic stress.

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