Test study on the deterioration mechanism of limestone-bolt combination support characteristics under the effect of dissolution

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2025-05-23 DOI:10.1007/s10064-025-04363-3

Yanchun Tang, Yali Zhang

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引用次数: 0

Abstract

Modern underground engineering support design generally considers the synergistic support relationship between the surrounding rock and the support system. In underground engineering involving soluble rocks, primarily limestone, dissolution has a long-term impact on the deterioration of limestone-bolt combined support characteristics. This study focuses on the limestone-bolt combined support structure at different stages of fissure development and varying dissolution time. Considering the mechanical deterioration mechanism of limestone under the effect of dissolution, it employs self-developed equipment to conduct a series of experimental studies. The research verifies that the detrimental impact of dissolution on the deterioration of limestone-bolt combined support characteristics cannot be overlooked. The analysis reveals the differences in the extent of deterioration of the limestone-bolt combined support structure under different stages of fissure development and varying dissolution time. Furthermore, the study uncovers the deterioration mechanism of the limestone-bolt combined support characteristics under the influence of dissolution. The study can provide important physical basis for the development of the construction scheme and the optimization of stability of surrounding rock in underground engineering in soluble rocks.

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溶蚀作用下灰岩-锚杆组合支护特性劣化机理试验研究

现代地下工程支护设计一般考虑围岩与支护系统之间的协同支护关系。在以灰岩为主的可溶岩地下工程中，溶蚀对灰岩-锚杆组合支护特性的恶化具有长期影响。研究了不同裂隙发育阶段和不同溶蚀时间下的灰岩-锚杆组合支护结构。考虑到溶蚀作用下石灰石的力学劣化机制，采用自行研制的设备进行了一系列的实验研究。研究验证了溶蚀对灰岩-锚杆组合支护特性恶化的不利影响不容忽视。分析表明，不同裂隙发育阶段和不同溶蚀时间下，灰岩-锚杆组合支护结构劣化程度存在差异。进一步揭示了溶蚀作用下灰岩-锚杆组合支护特性劣化机理。该研究可为可溶性岩石地下工程施工方案的制定和围岩稳定性的优化提供重要的物理依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.