摘要
科学准确地开展矿区岩体质量评价研究,对于矿区的可崩性评价、地下空间工程结构稳定性分析具有重要意义。以普朗铜矿区为研究区,通过收集普朗铜矿勘探区的地质资料、钻孔信息和岩心信息,建立了普朗铜矿区地质模型,并采用钻孔超声波成像和光学成像测井测试方法,结合岩心实物资料和室内岩石试验所获取的岩体质量评价指标参数,基于提出的模糊岩石工程系统(RES)理论-可拓学理论评价模型对矿区单个钻孔及区域岩体质量进行了评价与预测研究。结果表明:普朗铜矿区17个钻孔中15个钻孔整体岩体质量为Ⅱ级,仅2个钻孔的岩体质量分别为Ⅱ~Ⅲ级和Ⅲ级;矿区3种岩性岩体质量均为Ⅱ级,其中石英闪长玢岩和石英二长斑岩岩体质量良好(Ⅰ、Ⅱ级)段岩体占比更高,角岩岩体质量劣质(Ⅲ、Ⅳ、Ⅴ级)段岩体占比更高;工作区整体岩体质量为Ⅱ级;与RES-云模型和简单关联函数-可拓学模型相比,模糊RES-可拓学理论评价模型对某工程岩体质量的评价结果与实际工程岩体质量等级能够较好吻合,进一步验证了本文所提出的模糊RES-可拓学理论评价模型在岩体质量评价中具有较强的适用性。
Scientific and accurate research on the evaluation of rock mass quality in the mining area is of great significance for the evaluation of the collapsibility of the mining area and the analysis of the stability of the underground space engineering structure.This paper collects the geological data, drilling information and core information of the Pulang Copper Mine exploration area to establish a geological model of the Pulang Copper Mine.Combined with core physical data and indoor rock test, the index parameters are obtained by borehole ultrasonic imaging and optical imaging logging.Based on the proposed fuzzy RES(Rock Engineering System)-extenics theory evaluation model, these parameters are used to predict and evaluate the rock mass quality of a single borehole and a mining area.The results show that the overall rock mass quality of 15 of the 17 boreholes in the mining area belongs to class Ⅱ,and only 2 boreholes are class Ⅱ~Ⅲ and Ⅲ.The quality of the three lithological rocks belong to class Ⅱ.The rock mass of quartz diorite porphyrite and quartz monzonite porphyry with good rock mass quality(class Ⅰ and Ⅱ) has a higher proportion, while the rock mass of the horn rock with inferior quality(Class Ⅲ,Ⅳ and Ⅴ) has a higher proportion.The overall quality of the rock mass in the work area belongs to Class Ⅱ.Compared with RES-cloud model and simple correlation function-extenics model, the evaluation results of this model are in good agreement, which further verifies that the model has strong applicability in the process of rock mass quality evaluation.
作者
杨朝义
柯超
羊劲松
周鹏超
沙有财
吴益平
YANG Chaoyi;KE Chao;YANG Jingsong;ZHOU Pengchao;SHA Youcai;WU Yiping(Yunnan Diqing Nonferrous Metal Co.,Ld.,Shangrila 674400,China;Faculty of Engineering,China University of Geosciences(Wuhan),Wuhan 430074,China;Practical Teaching and Innovative Talents Training Base in the Pulang Copper Mine,China Universily of Geosciences(Wuhan),Shangrila 674400,China;Hunan Geological Exploration Institute of China Chemical Geology and Mine Bureau,Changsha 410004,China)
出处
《安全与环境工程》
CAS
CSCD
北大核心
2022年第6期122-131,共10页
Safety and Environmental Engineering
基金
国家自然科学基金项目(41977244、42007267)。
