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黄金科学技术 ›› 2023, Vol. 31 ›› Issue (3): 487-496.doi: 10.11872/j.issn.1005-2518.2023.03.153

• 采选技术与矿山管理 • 上一篇    下一篇

基于综合权重—模糊物元法的岩溶地区隧道围岩质量评价

张卫中(),袁威,康钦容(),夏缘帝,李梦玲   

  1. 武汉工程大学资源与安全工程学院,湖北 武汉 430073
  • 收稿日期:2022-10-21 修回日期:2023-02-14 出版日期:2023-06-30 发布日期:2023-07-20
  • 通讯作者: 康钦容 E-mail:wzzhang1120@126.com;kang801118@163.com
  • 作者简介:张卫中(1977-),男,河南驻马店人,博士后,教授,从事岩石力学相关科研及设计工作。wzzhang1120@126.com
  • 基金资助:
    国家自然科学基金项目“中低品位磷矿山固废胶结体宏细观损伤特性及充填空区力学效应研究”(52174086);国家自然科学基金项目“顺层坡含碎石滑带土变形及渗流特性研究”(51804222);武汉工程大学研究生教育创新基金(CX2019107)

Quality Evaluation of Tunnel Surrounding Rock in Karst Area Based on Comprehensive Weight-Fuzzy Matter-element Method

Weizhong ZHANG(),Wei YUAN,Qinrong KANG(),Yuandi XIA,Mengling LI   

  1. School of Resources and Safety Engineering,Wuhan Institude of Technology,Wuhan 430073,Hubei,China
  • Received:2022-10-21 Revised:2023-02-14 Online:2023-06-30 Published:2023-07-20
  • Contact: Qinrong KANG E-mail:wzzhang1120@126.com;kang801118@163.com

摘要:

为科学、准确地对岩溶隧道进行围岩质量分级评价,提出了基于综合权重—模糊物元法的岩溶地区隧道围岩质量评价方法。根据实测数据,采用CRITIC法确定影响岩溶地区隧道围岩质量指标的客观权重,采用改进的层次分析法确定其主观权重,并利用组合赋权计算得出各项指标的综合权重,最终根据模糊物元理论确定围岩的分级。为验证该方法的有效性,将其应用于岩溶地区腾讯七星数据中心隧道群围岩质量评价中。研究结果表明:基于综合权重—模糊物元法的岩溶地区隧道围岩质量评价判定结果与实际现场分级情况吻合较好,说明该方法能够实现对岩溶隧道围岩质量的综合判定。

关键词: 岩溶区隧道, 围岩质量评价, 综合权重, 模糊物元法

Abstract:

The distribution area of karst in China can reach about 33% of the country’s land area,therefore,in the process of tunnel excavation and construction in karst area,it is inevitable to cross the karst development location.At the same time,due to the hidden nature and irregularity of karst development,water and mud surges may occur locally in tunnel excavation,which greatly reduces the safety and stability of the tunnel and easily causes collapse accidents and threatens construction safety.To solve this problem,the geological situation of the surrounding rock needs to be fully grasped.Therefore,the evaluation of the quality of the surrounding rock is of great significance to the safety of tunnel rock design and construction.In order to scientifically and accurately evaluate the surrounding rock quality of karst tunnels,CRITIC method was used to determine the objective weight of the surrounding rock quality index affecting the tunnel in karst areas according to the measured data.The improved analytic hierarchy process was used to determine the subjective weight,and the combined weight was used to calculate the comprehensive weight of each index.Finally,the classification of surrounding rock was determined according to the fuzzy matter-element theory.Thus,the evaluation method of surrounding rock quality of tunnel in karst areas based on the comprehensive weight-fuzzy matter-element method was proposed,and this method was applied to the evaluation of surrounding rock quality of tunnel group in the seven-star data center of Tencent in karst areas.The research results show that the comprehensive fuzzy evaluation model established by introducing variance coefficients to the CRITIC method and introducing optimal transfer matrix optimization AHP method can avoid the influence of purely human subjective factors and evaluate and grade the rock quality more objectively and comprehensively.The evaluation results are in good agreement with the actual on-site grading,and the method can achieve a more scientific and accurate comprehensive determination of karst tunnel quality.The rock quality of the tunnel in this project example is mainly Ⅳ and Ⅴ surrounding rocks,which are poor and less stable,and the support of the surrounding rocks need to strengthen.

Key words: tunnel in karst area, quality evaluation of surrounding rock, comprehensive weight, fuzzy matter-element method

中图分类号: 

  • TD853

图1

改进的CRITIC法计算步骤"

图2

组合赋权法计算步骤"

图3

模糊物元评价方法示意图"

图4

隧道整体平面布置图"

图5

KBQ指标计算方法"

表1

围岩分级评价指标分类标准"

一级指标二级指标指标编号稳定性等级
围岩岩体结构特征结构类型X1

整体结构

(0.9~1.0)

整体块状

(0.7~0.9)

层状

(0.5~0.7)

破碎状

(0.3~0.5)

散体状

(~0.3)

岩体RQD/%X290~10075~9050~7525~50<25

岩体单轴抗压强度

/MPa

X3200~300100~20050~10025~500~15
岩体完整性系数X40.75~1.000.55~0.750.30~0.550.15~0.300.00~0.15
节理间距/mX50.8~2.00.3~0.80.2~0.30.1~0.20.00~0.1
围岩地质特征地下水/(L·min-1X6<2525~5050~100100~125125~200
软弱夹层性质X7

无夹层

(0.9~1.0)

软岩、岩块

(0.7~0.9)

岩屑

(0.5~0.7)

岩屑夹泥

(0.3~0.5)

泥夹岩屑、泥质

(~0.3)

岩层倾角/(°)X8<1010~1525~4545~6060~90
KBQX9>550550~451450~351350~211≤210

表2

岩体质量评价样本数据"

工程编号断面位置断面编号指标平均取值
X1X2X3X4X5X6X7X8X9
A1进口S10.252.314.00.420.351020.26232.7
B1进口S20.442.418.40.360.221000.215229.6
出口S30.25242.60.410.181000.315312.6
B2进口S40.245.719.90.380.021050.410156.8
出口S50.255.622.40.430.051080.28173.5
B3进口S60.465.542.90.490.26980.412336.1
出口S70.568.847.40.510.30950.214348.9
B4进口S80.252.334.20.420.101010.212209.4
出口S90.449.030.60.390.141060.415198.3
B5进口S100.242.414.50.360.08960.211166.3
出口S110.442.418.20.350.04940.315167.1
B6起点S120.449.020.40.390.34990.414245.0
终点S130.452.025.60.410.301020.112265.3
油库起点S140.452.021.40.410.29970.413249.0
终点S150.265.514.50.480.241000.310248.9

表3

各评价指标的客观权重"

指标编号权重指标编号权重
X10.141X60.025
X20.055X70.175
X30.148X80.105
X40.040X90.079
X50.232

表4

各评价指标的主观权重"

指标编号权重ω指标编号权重ω
X10.230X60.076
X20.049X70.148
X30.061X80.095
X40.185X90.118
X50.039

表5

综合权重计算结果"

指标编号因素主观权重客观权重αβ综合权重
X1结构类型0.2300.1410.5940.4060.194
X2岩体RQD0.0490.0550.051
X3岩体单轴抗压强度0.0610.1480.096
X4岩体完整性系数0.1850.0400.126
X5节理间距0.0390.2320.117
X6地下水0.0760.0250.055
X7软弱夹层性质0.1480.1750.159
X8岩层倾角0.0950.1050.099
X方正汇总行9KBQ0.1180.0790.102

表6

隧道围岩分级结果"

工程编号(名称)断面位置断面编号围岩贴进度围岩评价等级

实测

等级

A1进口S10.296
B1进口S20.315
出口S30.321
B2进口S40.285

出口S50.269
B3进口S60.404
出口S70.395
B4进口S80.282
出口S90.313
B5进口S100.256
出口S110.308
B6起点S120.369
终点S130.320
油库起点S140.370
终点S150.318
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