优化洞室大爆破定测设计

Surveying and plan optimized for chamber blasting

在洞室掘进过程中,由于施工管理未到位,施工队伍技术水平较差,施工的其中一条洞室掘进控制导线与设计方位线偏差很大,导致药室的最小抵抗线由原设计的40m增大到实测的57m,而所检索、查阅的资料中,抵抗线超过45m的洞室大爆破资料极少,抵抗线超过50m的洞室大爆破的资料更是难以找到.合理调整装药结构、装药位置及条形药包的装药量,做好了药室设计与定测工作,确保洞室大爆破成功.

In the process of digging excavation, a chamber under construction is become deviation with plan in chamber excavated, because of poor construction management and techniques.For this reason, the minimum burden of the chamber found out by original design of 40 m increases to the actual surveying of 57 m.However,the data for the chamber whose resisting line exceeds 45 m is rare in document retrieval,let alone that exceeds 50 m.The reasonable adjustment of charge struction,charge position,charge load of bar cartridge and optimization have been done for the design and surveying work of the chamber to insure the chamber blasting successfully.