4/2/2025, 2:57:25 PM 星期三
冻融循环作用下裂隙岩体注浆加固机理—在露天矿边坡工程中的应用
作者单位:

1.中联润世新疆煤业有限公司,新疆 昌吉 831800;2.中国矿业大学资源与地球科学学院,江苏 徐州 221116;3.新疆工程学院,新疆 乌鲁木齐 830023

基金项目:

国家自然科学(42207169, U22A20569);新疆自治区重点研发计划项目(2021B03004‐3)


Grouting and reinforcement mechanism of fractured rock mass under freeze-thaw cycle: application in open-pit mine slope engineering
Author:
Affiliation:

1.Zhonglian Runshi Xinjiang Coal Industry Co, Changji, Xinjiang, 831800, China;2.School of Resources and Earth Sciences,China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;3.Xinjiang Institute of Engineering, Urumqi, Xinjiang, 830023, China

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    摘要:

    在矿山、水利等工程中,通过注浆加固提高裂隙岩体工程性质、加强其强度的施工工艺得到了广泛应用。为研究注浆加固中各种注浆因素和注浆方法对裂隙岩体强度的相关影响,以及裂隙岩体注浆加固后冻融作用对其工程性质的影响,使用水泥砂浆等材料按一定相似比制作可以模拟裂隙原岩力学特性的相似材料,通过对浆液水灰比、注浆流速(注浆压力)、浆液温度等因素进行相关变量的控制,分别用无机材料、无机复合材料以及有机材料对裂隙岩体进行注浆加固。通过模拟该地区的气候等环境条件下,对各类因素进行相关试验,进而分析各类因素对注浆加固的影响;最后根据试验结果,对注浆参数进行优化设计,根据新疆准东西黑山矿区中联润世露天煤矿边坡的工程地质条件和地质环境进行注浆加固方案设计及监测,对该地区和其他地质特性及区域特征相似的露天矿边坡灾害防治具有一定借鉴意义。

    Abstract:

    The construction technology of improving the engineering properties and strengthening the strength of fractured rock mass by grouting reinforcement has been widely used in mining and water conservancy projects. In order to study the related effects of various grouting factors and grouting methods on the strength of fractured rock mass in grouting reinforcement, as well as the effects of freeze-thaw action on the engineering properties of fractured rock mass after grouting reinforcement, cement mortar and other materials are used to make similar materials that can simulate the mechanical properties of fractured original rock according to a certain similarity ratio. By controlling the relative variables of slurry water-cement ratio, grouting velocity (grouting pressure), grouting temperature and other factors, the fractured rock mass is reinforced by grouting with inorganic materials, inorganic composite materials and organic materials respectively. Through the simulation of the climate and other environmental conditions in this area, the relevant tests of various factors are carried out, and then the influence of various factors on grouting reinforcement is analyzed. Finally, according to the test results, the grouting parameters are optimized, and the grouting reinforcement scheme is designed and monitored according to the engineering geological conditions and geological environment of the slope of Zhonglian Runshi open-pit coal mine in Junxixiheishan mining area, Xinjiang, which has certain reference significance for slope disaster prevention and control in this area and other open-pit mines with similar geological characteristics and regional characteristics.

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  • 收稿日期:2024-09-12
  • 最后修改日期:2024-11-03
  • 录用日期:2024-12-12
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