深部构造区域地应力分布与巷道稳定关系研究  

Relationship between ground stress distribution and roadway stability in deep tectonic region

作　　者：肖同强[1] 支光辉[2] 张治高 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]河南理工大学机械与动力工程学院,河南焦作454000 [3]山东新巨龙能源有限责任公司,山东菏泽274918

出　　处：《采矿与安全工程学报》2013年第5期659-664,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金青年科学基金项目(51204167);河南理工大学博士基金项目(B2012-081)

摘　　要：针对深部构造区域巷道围岩控制问题,研究了巷道稳定性与地应力分布关系。地应力实测及其反演表明,巨野矿区深部地应力场属于构造应力场类型。基于地应力场分布特征,采用模型试验、数值计算、现场观测等方法,研究了埋深、构造应力、断层等因素对巷道稳定性的影响规律:埋深超过800 m,侧压系数超过2.5以后,巷道变形量急剧增大,肩角锚杆大量破断,顶板和底板剪切破坏严重,顶煤呈现"尖顶型"垮冒;断层附近地应力较高,巷道与最大水平应力夹角越大,巷道变形量越大、支护结构破坏越严重。深部构造区域巷道应加强顶板与肩角围岩控制。In this paper, aimed at controlling the stability of roadway surrounding rock in deep tectonic stress field, relationship between ground stress distribution and roadway stability was studied. Through ground stress measurement and inversion, the deep ground stress field in Juye Mining Area belongs to tectonic stress field. Meanwhile, based on the ground stress distribution characteristics, by using similar simulation, numerical simulation and field test, the effects of buried depth, tectonic stress, roadway lay- out, fault, etc, on roadway stability were systematically studied. The results show that when buried depth is over 800 m, and lateral pressure coefficient is over 2.5, roadway deformation increases rapidly, plenty of shoulder bolts are broken, the shear failures in roof and floor are serious, and the thick top coal appears ＂fastigium＂ shape collapse. Meanwhile, ground stress is higher near fault structures, and the larger the angle between roadway and the maximum horizontal stress is, the larger roadway deformation is, and the more serious the damage of support structure is. Thus, the surrounding rock control in road- way roof and shoulder needs strengthening in deep tectonic regions.

关 键 词：深部巷道 构造区域 地应力 巷道稳定性 

分 类 号：TD322[矿业工程—矿井建设]