In a reliability assessment of hydraulic fracturing, the efficacy of hydraulic fracturing must be evaluated, and the source properties and magnitude of micro-earthquakes induced by hydraulic fracturing in a coal mine need to be quantified. Firstly, the changing trends of the number and energy of micro-seismic events induced by hydraulic fracturing with high-pressure water were examined, and the hydraulic fracturing effect was evaluated by micro-seismic location. Then, the source parameters (seismic moment M₀, source radius R, corner frequency f₀, radiated seismic energy E, stress drop △σ, and apparent stress σ_a) were calculated using the Brune model and the grid-search method, and the relationships between M₀ and other source parameters were analyzed. Finally, the source parameters between micro-earthquakes induced by hydraulic fracturing and those induced by mining were compared, and the relationship between M_w (moment magnitude) and M_L (local magnitude) of a micro-earthquake induced by hydraulic fracturing was ascertained. The results show that most micro-earthquakes occur in the initial stage of water pressure increase during hydraulic fracturing. In addition, the occurrence of several micro-earthquakes does not correspond strictly to the significant decrease of water pressure; the locations of micro-earthquakes can be used to evaluate the effect of hydraulic fracturing. The source parameters of micro-earthquakes induced by hydraulic fracturing in the Xieqiao coal mine can be obtained from the Brune model and the grid-search method. Corner frequency f₀ decreases with increase in seismic moment M₀, source parameters of R and E, as well as △σ increase with increase in seismic moment M₀, but the apparent stress σ_a fluctuates around a certain value; the relationships between the other source parameters and M₀ of micro-earthquake induced by hydraulic fracturing are consistent with that of a micro-earthquake induced by coal mining. Considering M_w, M_L1 can be better used to calculate the magnitude of micro-earthquakes induced by hydraulic fracturing. Through M_w and M_L1, the magnitude of a micro-earthquake induced by hydraulic fracturing can be evaluated. Our results improve the evaluation of the hydraulic fracturing effect, the understanding of source properties, and evaluation of the magnitude of micro-earthquakes induced by hydraulic fracturing. It is found that these micro-earthquakes are within the safe controllable range, and the hydraulic fracturing process of the Xieqiao coal mine is reliable and safe.

在水力压裂的可靠性评估中，必须评估水力压裂的有效性，并且需要对煤矿中水力压裂引起的微震的震源特性和震级进行量化。首先，研究了高压水力水力压裂引起的微震事件数量和能量的变化趋势，并通过微震位置评价了水力压裂效果。然后，源参数（地震矩中号₀，源半径- [R ，转角频率˚F ₀，辐射地震能量ë，应力降△ σ，和表观应力σ_一个使用Brune模型和网格搜索方法计算），并分析M ₀与其他源参数之间的关系。最后，比较了水力压裂引起的微震与采动引起的微震的震源参数，以及M _w（矩震级）与M _{L的关系。}确定了由水力压裂引起的微地震的（局部震级）。结果表明，大多数微地震发生在水力压裂过程中水压升高的初始阶段。另外，几次微地震的发生并不完全对应于水压的显着下降。微地震的位置可以用来评估水力压裂的效果。可以通过Brune模型和网格搜索法获得谢桥煤矿水力压裂引起的微震震源参数。拐角频率f ₀随着地震矩M ₀，R和E的源参数的增加而减小，以及△ σ与地震矩增加增加中号₀，但明显的应力σ_一个围绕一定的值变动; 水力压裂引起的微震的其他震源参数与M ₀的关系与采煤引起的微震的M ₀的关系是一致的。考虑到M _w，M _L1可以更好地用于计算水力压裂引起的微地震的大小。通过M _w和M _L1，可以评估由水力压裂引起的微地震的大小。我们的结果改善了对水力压裂效果的评价，​​对震源特性的理解以及对水力压裂引起的微地震强度的评价。结果表明，这些微震均在安全可控范围内，谢桥煤矿水力压裂工艺可靠，安全。