复杂节理岩体巷道非均称底鼓机制及控制对策  

Mechanism of non-harmonious roadway floor heave in complex jointed rock mass and control measures

作　　者：江东海 李恭建 马文强 张明光 王同旭 JIANG Donghai1, LI Gongjian2, MAWenqiang1, ZHANG Mingguang1, WANG Tongxu1(1. College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China. 2. Beizao Coal Mine, Shandong Energy Longkou Mining Group, Longkou, Shandong 265700, Chin)

机构地区：[1]山东科技大学矿业与安全工程学院,山东青岛266590 [2]山东能源龙矿集团北皂煤矿,山东龙口265700

出　　处：《采矿与安全工程学报》2018年第2期238-244,共7页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51379116);山东省重点研发计划项目(2015GSF116012);山东省自然科学基金项目(ZR2016EEM36)

摘　　要：为分析复杂节理岩体巷道非均称底鼓机制并给出相应控制对策,通过现场节理参数调查、优势节理组蒙特卡罗模拟和FISH语言编程,建立复杂节理岩体巷道数值模型。通过现场底鼓观测和数值模拟分析巷道非均称底鼓机制,认为该类巷道底板中随机赋存着尺寸各异的倒棱锥块体,并将倒棱锥块体底面与巷道的位置关系分为3类,即底面于巷道内赋存、底面骑一帮赋存和底面跨两帮赋存。不同的赋存情况底鼓量波动较大,导致巷道非均称底鼓。针对该底鼓机制提出混凝土反底拱+预应力锚索的控制对策,数值模拟和现场试验结果均表明,该底板控制方案可将底鼓量控制在120 mm以下,并提高巷道整体稳定性,为同类条件下巷道及隧道底鼓机理和控制提供参考。To achieve the mechanism of the non-harmonious roadway floor heave in complex jointed rock mass and its control measures, the numerical model of roadway in complex jointed rock mass is built by incorporating the field joint parameters and dominant sets of joints using Monte Carlo simula- tion and programming with FISH language. The mechanism of non-harmonious floor heave is analyzed with floor heave field observations and numerical simulations, which yields the pyramid rock blocks with various sizes are randomly in the roadway floor. According to the position relationship between the bottom surface and the roadway, the bocks are divided into three types, the bottom surfaces in the road- way, across one side and two sides of roadway. The occurrence of floor heave varies greatly with the different occurrences, which leads to the non-harmonious floor heave. Aiming at this reason, the control measure of concrete inverted arch and pre-stressed cable is proposed, the numerical simulation and field testing show that the floor heave can be controlled under 120 mm and the global stability of roadway is improved. The results provide on floor heave mechanism and control strategy of roadway or tunnel with same condition.

关 键 词：3DEC FISH语言 复杂节理岩体 底鼓机制 底鼓控制 

分 类 号：TD353[矿业工程—矿井建设]