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江苏省冶金局于1981年9月23日在江苏冶山铁矿主持召开了地下工程预裂爆破鉴定会。马鞍山矿山研究院和冶山铁矿的代表就地下工程预裂爆破的原理、研究试验概况和取得的技术成果向大会作了介绍,会议代表进行了现场参观。地下工程预裂爆破是在光面爆破基础上发展起来的一项控制井巷工程周边轮廓和围岩爆破的新的爆破技术。对需要维护的巷道掘进,尤其对于围岩稳固性差或服务年限较长的重要井巷工程施工,有比较理想的技术经济指标。
Metallurgical Bureau of Jiangsu Province in September 23, 1981 hosted the underground works of presbylastic blasting appraisal in Jiangsu Ye Shan Iron Mine. The representatives of Maanshan Mining Research Institute and Ye Shan Iron Mine introduced the principle of pre-splitting blasting of underground works, research and test results and technical achievements made to the conference. Representatives of the conference conducted site visits. The pre-cracking blasting of underground works is a new blasting technique developed on the basis of smooth blasting to control the surrounding contour and surrounding rock blasting of well engineering. It is an ideal technical and economic index for roadway tunneling that needs to be maintained, especially for the construction of important shaft and gateway with poor stability or service life of surrounding rock.