摘要
本文对岩体爆破地质力学问题进行了论证。岩体的爆破性按岩体结构类型、地应力特征和爆破震动的影响可分为五类:1.极难爆(整体状结构);2.难爆(块状结构);3.中等(裂隙块状结构、碎裂结构);4.易爆(层状碎裂结构、软弱层状结构);5.极易爆(松散结构、松软结构)。
Rock mass is a result of composite geologic processes over a long period of time. Its structure and state of crustal stress are a centain effect of endogenic and exogenic forces in the geologic process. For rock mass blasting at a given lithologic condition the rock mass structure and state of crustal stress shoud be the main factors controlling on the blasting effect.Artificial blasting vibration and secondary stress can change the balance of the crustal stress and the integer of the structural system. This is also an important factor affecting on the blasting effect. From this viewpoint the paper provides a detailed discussion of the mechanical questions on rock mass blasting. According to the structural types of rock mass, characteristics of crustal stress and blasting vibration effect, we classified the rock mass to be blasted into five types: 1) extreme difficultly blasted rock mass (integer structure), 2) difficultly blasted rock mass (massive structure), 3) moderately blasted rock mass (cracked-massive structure), 4) easily blasted rock mass (lamellar-clastic structure, weak-lamellar structure), and 5) extreme easily blasted rock mass (loose structure, spongy structure).
出处
《地质科学》
CAS
CSCD
北大核心
1990年第2期194-199,共6页
Chinese Journal of Geology(Scientia Geologica Sinica)
关键词
岩体
爆破
地质力学
爆破性
分级
rock mass blasting, geomechanics, rock structure, blastability classification, cements
