臧金诚，李东浩，张鲁，等.深部硐室群开挖次序优化方法研究［J］.河南理工大学学报（自然科学版），doi:10.16186/j.cnki.1673-9787.2023100063

ZANG J C，LI D H，ZHANG L，et al.Research on optimization method for excavation sequence of deep chamber group［J］.Journal of Henan Polytechnic University（Natural Science），doi:10.16186/j.cnki.1673-9787.2023100063

深部硐室群开挖次序优化方法研究(网络首发)

臧金诚¹，李东浩²，张鲁¹，孙凌锋²，黄玉兵²

（1.兖煤万福能源有限公司，山东 菏泽 274922；2.中国矿业大学（北京） 深部岩土力学与地下工程国家重点实验室，北京 100083）

摘要: [目的] 为了降低深部硐室群开挖引起的相互扰动影响，[方法] 以巨厚冲积层在建矿井—万福煤矿为工程背景，建立了围岩表征变形量和硐室开挖互扰度等定量评价指标。基于“硐室群整体表征变形量最小为主，巷道间开挖互扰度最小为次”的总体优选原则，提出了深部硐室群开挖次序评判优选方法，开展了深部硐室单独开挖和硐室群不同开挖次序的数值试验研究。[结果] 胶带机头围岩表征变形量达416.2 mm，主井联络巷围岩表征变形量仅58.6 mm。开挖互扰度总量最低为方案三286.38，最高为方案五456.20，方案三相比方案五降低了37.22 %。利用该评判优选方法计算确定方案三硐室群的整体围岩表征变形量和开挖扰动程度最小，为最优开挖方案。该方案加权总分为11，各硐室表征变形增量之和为178 mm，开挖互扰度相比最大的开挖方案降低了30.26%，该评判优选方法的科学有效性得到了验证。[结论] 发现了硐室的变形具有非均匀性的特点，明确了硐室断面尺寸越大，围岩卸荷越明显，应力释放程度越大的影响规律，通过评判优选方法确定了万福煤矿深部硐室群最优开挖方案。

关键词: 深部硐室群；开挖次序优化；表征变形量；开挖互扰度；评判优选方法

中图分类号：TD264

doi: 10.16186/j.cnki.1673-9787.2023100063

基金项目: 国家自然科学基金资助项目（42307213）

收稿日期：2023-10-30

修回日期：2024-03-08

网络首发日期：2024-09-28

Research on optimization method for excavation sequence of deep chamber group

ZANG Jincheng¹，LI Donghao²，ZHANG Lu¹，SUN Lingfeng²，HUANG Yubing²

（1.Wanfu Energy Company Limitied of Yanzhou Coal, Heze, 274922, Shandong, China;2.State Key Laboratory for Geo-mechanics and Deep Underground Engineering, China University of Mining & Technology （Beijing）, Beijing 100083， China）

Abstract: [Objective] In order to reduce the mutual disturbance caused by excavation of deep chambers, [Methods] This paper taked Wanfu Coal Mine， a coal mine under construction in the extremely thick alluvium， as the engineering background. Established quantitative evaluation indicators such as surrounding rock characterization deformation and cavern excavation mutual disturbance degree. Based on the overall optimization principle of " the overall deformation of chamber group is the main factor， and the mutual interference degree of excavation between roadways is the secondary factor "， a method for evaluating and optimizing the excavation sequence of deep chamber group was proposed. Numerical experimental studies on excavation of deep chamber alone and excavation sequence of chamber groups are carried out. [Results] The characteristic deformation of belt head roadway is 416.2 mm， and that of main shaft contact roadway is only 58.6 mm. The total interference degree of excavation is 286.38 in scheme 3 and 456.20 in Scheme 5， which is reduced by 37.22% compared with Scheme 5. By using this evaluation and optimization method， it is determined that the overall surrounding rock deformation and excavation disturbance of the chamber group in Scheme 3 are the smallest， which is the best excavation scheme. The weighted total score of this scheme is 11， and the sum of the characteristic deformation increments of each chamber is 178 mm， and the excavation interference is reduced by 30.26% compared with the largest excavation scheme. The scientific validity of the method has been verified. [Conclusion] It is found that the deformation of the chamber has the characteristic of non-uniformity. The larger the section size of the chamber， the more obvious the unloading of surrounding rock and the greater the degree of stress release are clarified. The optimal excavation scheme of deep chamber group in Wanfu Coal Mine is determined by evaluation and optimization method.

Key words: deep chamber group；optimization of excavation sequence；surrounding rock characterization deformation；excavation interference degree；evaluation and optimization method

CLC: