Calculation of the Height of the Water-Conducting Fracture Zone Based on the Analysis of Critical Fracturing of Overlying Strata

Yi Tan, Hao Cheng, Wenyu Lv, Weitao Yan, Wenbing Guo, Yujiang Zhang, Tingye Qi, Dawei Yin, Sijiang Wei, Jianji Ren and Yajun Xin
Additional contact information
Yi Tan: School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Hao Cheng: School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Wenyu Lv: State Key Laboratory of Coal Resources in Western China, Xi’an University of Science and Technology, Xi’an 710054, China
Weitao Yan: State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China
Wenbing Guo: School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Yujiang Zhang: College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Tingye Qi: College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Dawei Yin: College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266000, China
Sijiang Wei: School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Jianji Ren: State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China
Yajun Xin: School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China

Sustainability, 2022, vol. 14, issue 9, 1-17

Abstract: Accurate division of the water-conducting fracturing zone (WCFZ) in the mining overburden serves as an important basis to evaluate the stability of coal mining under water bodies. Research on the WCFZ is conducive to controlling surface subsidence and realizing safe coal mining under water. Traditionally, the WCFZ is generally determined by field observation (liquid leakage method, borehole television, etc.) or empirical formula. Although these methods boast high accuracy, they are time-consuming and laborious and have some problems such as weak pertinence and a large value range. In this study, a mechanical model under the critical breakage condition of hard and soft strata was established on the basis of the specific geological and mining information of a mine. Besides, the stability condition for the broken strata to form the “masonry beam” structure and the deflection-based bending deformation formula of hard and soft strata were deduced, and the method of calculating the height of WCFZ based on the analysis of critical fracturing of soft and hard strata (hereafter referred to as the CFSHS-based height calculation method) was proposed. Furthermore, with reference to the results of specific engineering tests, the height of the WCFZ in the working face 15,101 of coal mine XJ was analyzed by means of theoretical analysis, numerical simulation and engineering verification, which verifies the rationality and practicability of the CFSHS-based height calculation method.

Keywords: water-conducting fracture zone; height calculation method; critical fracturing; mechanical model (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/9/5221/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/9/5221/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:9:p:5221-:d:802383

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().