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[1]杨建功,路维,王邵臻,等.抚顺西露天矿周边城区建筑物修补砂浆力学性能研究*[J].中国安全生产科学技术,2025,21(8):87-94.[doi:10.11731/j.issn.1673-193x.2025.08.011]
　YANG Jiangong,LU Wei,WANG Shaozhen,et al.Study on mechanical properties of repair mortar for buildings in surrounding urban areas of Fushun West Open-Pit Mine[J].Journal of Safety Science and Technology,2025,21(8):87-94.[doi:10.11731/j.issn.1673-193x.2025.08.011]
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抚顺西露天矿周边城区建筑物修补砂浆力学性能研究*

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
21
期数:
2025年8期
页码:
87-94
栏目:
职业安全卫生管理与技术
出版日期:
2025-08-30

文章信息/Info

Title:
Study on mechanical properties of repair mortar for buildings in surrounding urban areas of Fushun West Open-Pit Mine
文章编号:
1673-193X(2025)-08-0087-08
作者:
杨建功; 路维; 王邵臻; 王金安; 李飞; 胡浩聪; 周家兴
（1.北京科技大学天津学院，天津 301830；
2.北京科技大学 土木与资源工程学院，北京 100083；
3.北京科技大学 金属矿山高效开采与安全教育部重点实验室，北京 100083；
4.清华大学 水利水电工程系，北京 100084；
5.清华大学 水圈科学与水利工程全国重点实验室，北京 100084)
Author(s):
YANG Jiangong;  LU Wei;  WANG Shaozhen;  WANG Jin’an;  LI Fei;  HU Haocong;  ZHOU Jiaxing
(1.Tianjin College,University of Science and Technology Beijing;
2.School of Civil and Resource Engineering,University of Science and Technology Beijing;
3.Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing;
4.Department of Hydraulic Engineering,Tsinghua University,Beijing 100084;
5.State Key Laboratory of Hydroscience and Engineering,Tsinghua University)
关键词:
露天矿; 微丝镀铜钢纤维砂浆; 响应面模型; 黏结抗折强度
Keywords:
open-pit mine;  micro-filament copper-coated steel fibre mortar;  response surface model;  bond flexural strength
分类号:
X947
DOI:
10.11731/j.issn.1673-193x.2025.08.011
文献标志码:
A
摘要:
为提升抚顺西露天矿周边城区受损建筑物的抗裂能力和结构稳定性，研发1种微丝镀铜钢纤维砂浆修补材料。通过既有裂缝混凝土试块的修补实验，并结合响应面分析法，构建黏结抗折强度的非线性预测模型。研究结果表明：钢纤维掺量对强度的提升效果最显著、减水剂掺量次之、水胶比最小。随着钢纤维掺量的增加，达到最大强度对应的水胶比逐渐由0.19上升至0.22。随着水胶比增加，达到最大强度对应的钢纤维掺量逐渐由50 kg/m3上升至80 kg/m3，对应的减水剂掺量约为12 g/L。此外，通过抗剪强度对比试验，验证钢纤维砂浆显著优于普通砂浆，该材料可为地层变形导致的建筑物受损与开裂部件提供可靠的修补与加固解决方案。研究结果可为矿区周边受损建筑物的修补与加固工程提供技术支持，并为解决当前由地表变形导致的建筑开裂问题提供新思路。
Abstract:
In order to enhance the crack resistance and structural stability of damaged buildings in surrounding urban areas of the Fushun West Open-pit Mine,this study developed a novel micro-filament copper-coated steel fibre mortar repair material.Through repair experiments on pre-cracked concrete specimens combined with response surface methodology,a nonlinear prediction model for bond flexural strength was established.The results indicate that the steel fiber content demonstrates the most significant effect on strength enhancement,followed by the water-reducing agent content,with water-to-binder ratio showing the least impact.As steel fiber content increases,the water-to-binder ratio corresponding to peak strength rises progressively from 0.19 to 0.22.With increasing water-to-binder ratio,the optimal steel fiber content for maximum strength gradually increases from 50 kg/m3 to 80 kg/m3,accompanied by a consistent water-reducing agent dosage of approximately 12 g/L.In addition,comparative shear strength tests verified the material’s superior performance over conventional mortar.This solution provides reliable repair and reinforcement for building components damaged by ground deformation-induced cracking.These findings offer technical support for rehabilitating mining-affected structures and present novel insights for addressing construction cracking caused by surface subsidence.

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备注/Memo

备注/Memo:
收稿日期： 2024-10-10
* 基金项目： 北京科技大学天津学院骨干人才培养计划“中青年学科带头人”项目（TYGG2022D02）
作者简介： 杨建功，硕士，副教授，主要研究方向为岩土工程。
通信作者： 周家兴，博士，助理研究员，主要研究方向为深部地应力场反演与重构。
更新日期/Last Update: 2025-09-01