摘要
阐述了光面、预裂爆破成缝的几个主要因素；从理论上分析了形成定向裂缝与孔距长短、准静压力大小岩体结构复杂性等要素密切相关；论证了裂纹长度能否贯通与孔距远近的关系；裂纹的生长是从孔壁开始并非从两孔中间产生．
The paper discusses some main factors of the mecha nism of smooth and pre-cracking blasting.The results of theoretical analyses show that the formation of directional cracks isrelated to the distan ce of holes.the quasi-static pressure and the strueture of rock mass. This paperalso studies the relation of len gth of crack and distance of holes.The initial cracks occur on the wallof holes instead of in the middle of two holes.
出处
《重庆大学学报（自然科学版）》
CAS
CSCD
1994年第1期126-130,共5页
Journal of Chongqing University
关键词
裂缝
光面
预裂爆破
crack
distance of holes
quasi-static pressure
smooth and pre-cracking blast-ing
