工作面爆破振动对硐室稳定性的影响

Effect of Explosive Quake in Working Face on Stability of Laneway in Coal Mine

为合理有效地控制和确定安全条件下爆破采煤工艺的爆破炸药量,必须通过井下测振的方式进行测试与评价.结合井下工作面采矿爆破振动测试数据,阐述了振动测试的方法及数据分析过程,针对工作面地质条件获得了采矿爆破对巷道及构筑物的振动衰减规律和频率影响特征,并进一步建立了爆心至保护巷道间距条件下所容许的段最大药量公式,为矿井煤炭安全高效开采提供了可靠的基础资料.

In order to control and confirm the detonator quantity of blast-winning technology under the condition of safe exploding, testing and evaluating by geophysics methods must be done to gain effective basic data. The method of vibration test and data processing and analyzing were illustrated through practical detecting data of explosive quake in working face of mine. With the practical geological condition of the working face, vibrating attenuation rule and frequency influence character being brought by mining explosive quake in laneway were gained. And computing formula on which distance was safe from the center of explosive quake in laneway was founded to get the most quantity of detonator in this kind of geological conditions. It can afford credible data for safe and effective mining of coal.