岩土力学 ›› 2019, Vol. 40 ›› Issue (S1): 275-280.doi: 10.16285/j.rsm.2018.1524

• 基础理论与实验研究 • 上一篇    下一篇

《工程岩体分级标准》中边坡工程岩体质量 指标计算方法的讨论

丁振杰1, 2，郑 俊3，吕 庆3，邓建辉4，童孟胜5   

  1. 1. 宁海县交通建设工程质量安全监督站，浙江 宁波 315600；2. 宁海县交通集团有限公司，浙江 宁波 315600； 3. 浙江大学 建筑工程学院，浙江 杭州 310058；4. 四川大学 水力学与山区河流开发保护国家重点实验室，四川 成都 610065； 5. 甬临线宁海段公路工程建设指挥部，浙江 宁波 315600
  • 收稿日期:2018-08-01 出版日期:2019-08-01 发布日期:2019-08-16
  • 通讯作者: 郑俊，男，1987年生，博士，副教授，硕士生导师，主要从事岩石力学与地质灾害防治研究与教学工作。E-mail：zhengjun12@zju.edu.cn E-mail:39664770@qq.com
  • 作者简介:丁振杰，男，1981年生，硕士，高级工程师，主要从事交通建设工程质量安全监督管理工作
  • 基金资助:
    国家重点研发计划（No.2018YFC1505005）；国家自然科学基金项目（No.41772322，No.41772287）；浙江省自然科学基金项目（No.LY18E090002）；浙江省交通运输厅科研计划项目（No.KH20170421）。

Discussion on calculation methods of quality index of slope engineering rock mass in Standard for engineering classification of rock mass

DING Zhen-jie1, 2, ZHENG Jun3, LÜ Qing3, DENG Jian-hui4, TONG Meng-sheng5   

  1. 1. Ninghai Supervision Station of Traffic Construction Engineering Quality and Safety, Ningbo, Zhejiang 315600, China; 2. Ninghai County Communications Group Co., Ltd., Ningbo, Zhejiang 315600, China; 3. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang 310058, China; 4. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan 610065, China; 5. Ninghai Headquarters for Yong-Lin Highway Engineering Construction, Ningbo, Zhejiang 315600, China
  • Received:2018-08-01 Online:2019-08-01 Published:2019-08-16
  • Supported by:
    This work was supported by the National Key R & D Program of China(2018YFC1505005), the National Natural Science Foundation Projects(41772322, 41772287), Zhejiang Provincial Natural Science Foundation Project(LY18E090002), and the Research Programs of Transportation Department of Zhejiang Province (KH20170421).

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摘要： 岩体质量等级指标是岩石边坡稳定性评价的基础，新修订的《工程岩体分级标准》增加了边坡工程岩体质量(QISERM)指标[BQ]的计算公式，包含一个反映边坡倾角与主要结构面倾角间关系影响的修正系数F3，其由结构面倾角与边坡坡面倾角之差确定。文中讨论了规范中F3的确定方法存在的缺陷，建议其取值改由结构面倾角与边坡坡面在结构面倾向方向上的视倾角之差来确定。通过13 357个算例的对比计算，统计了新标准取值方法和文中建议方法获得的边坡工程岩体质量指标[BQ]值之间的差值。结果表明，当主要结构面类型与延伸性修正系数? = 0.6时，差值在40以内，其中78.3% 的算例中差值小于5；当? = 1时，差值在60以内，其中有68.7%的算例中差值小于5。文中提出的方法相比新标准取值方法在理论上更完备，精度上更准确，可为边坡工程岩体质量指标计算提供参考。

关键词: 岩体质量评价, 规范, 岩体分级, 岩体分类

Abstract: Rock mass quality rating index is the basis of rock slope stability evaluation. In revised Standard for engineering classification of rock mass, the calculation formula of quality index of slope engineering rock mass(QISERM) is added. In the formula there is a correction coefficient F3, which reflects the relationship between the dip angles of the main discontinuity and the slope. According to the standard, the value of F3 is determined by the difference between the dip angles of the main discontinuities and the slope. The paper discussed the flaw existing in the aforementioned method in determining F3, and gave the modification suggestions by applying the difference between the dip angle of the main discontinuity and the apparent dip angle of the slope in the dip direction of the main discontinuity. In addition, the QISERM of 13 357 examples were calculated using the two methods suggested by the standard and this paper, and then the difference of [BQ] between these two methods was analyzed. It shows that when the correction coefficient of discontinuity type and extension ? is equal to 0.6, the difference is less than 40 and 78.3% of them is less than 5; when ? is equal to 1.0, the difference is less than 60 and 68.7% of them is less than 5. The method proposed in this paper is more complete and more accurate than the new standard method in theory, and it can provide reference for the calculation of QISERM.

Key words: rock mass quality evaluation, standard, rock mass rating, rock mass classification

中图分类号: 

  • TU 452
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