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Investigation of coordinated development of coal mining and pipeline protection under boundary effect of thick unconsolidated layer

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Abstract

The South-to-North Water Diversion Project is an important measure to optimize the spatial and temporal allocation of water resources in China, which is a super-large infrastructure project to solve the serious shortage of water resources in Northern China. Among them, ensuring pipeline safety is the key to the successful implementation of the project. However, as China is the largest coal producer in the world, part of the pipeline inevitably passes through the influence range of coal mining, which seriously threatens its safe operation and causes the contradiction between coal mining and pipeline protection. Especially in the thick unconsolidated layer area, the coal mining surface subsidence range greatly expanded, and the traditional probability integral method is difficult to accurately predict the basin boundary subsidence, which exacerbates the contradiction between coal mining and pipeline protection. To solve this problem, based on the measured data, this paper analyzes this boundary effect and reveals the key to the coordinated development of coal mining and pipeline protection under thick unconsolidated layer. On this basis, a piecewise probability integral correction model on surface subsidence prediction of coal mining under the thick unconsolidated layer is proposed, which realizes the accurate prediction of the boundary of the subsidence basin. It greatly alleviates the contradiction between coal mining and pipeline protection under thick unconsolidated layer and has important practical significance for the coordinated development between them.

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Funding

This work was funded by the National Natural Science Foundation of China (Grant No. U21A20109, 51974292), and the Postgraduate Research and Practice Innovation Program of Jiangsu Province (Grant No. KYCX21_2294).

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Authors and Affiliations

  1. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China

    Qian Jiang, Guangli Guo, Huaizhan Li, Tao Wei, Yafei Yuan & Chunmei Jiang

  2. NASG Key Laboratory of Land Environment and Disaster Monitoring, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China

    Qian Jiang, Guangli Guo, Huaizhan Li, Tao Wei, Yafei Yuan & Chunmei Jiang

Authors
  1. Qian Jiang
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  2. Guangli Guo
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  3. Huaizhan Li
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  4. Tao Wei
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  5. Yafei Yuan
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  6. Chunmei Jiang
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Corresponding author

Correspondence to Guangli Guo.

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Jiang, Q., Guo, G., Li, H. et al. Investigation of coordinated development of coal mining and pipeline protection under boundary effect of thick unconsolidated layer. Bull Eng Geol Environ 81, 136 (2022). https://doi.org/10.1007/s10064-022-02636-9

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