煤与瓦斯共采协同优化模型及安全开采控制机制研究

Co-extraction of coal and gas is the mining process of optimization of coal mining and gas extraction under the constraint conditions for safety production. Coal mining and gas extraction are taken as the two subsystems of Co-extraction of coal and gas in this project. Found the coal mining control variables and gas extraction control variables influence the Co-product, and reveal the interaction relationships between two variables in the process of Co-extraction of coal and gas. The constraint conditions of Co-extraction of coal and gas under the restrictive conditions of laws, regulations and production technology of coal mine safety production are established. The nonlinear collaborative optimization model of Co-extraction of coal and gas is established, the method of solving the model is studied and the program of solving the model is worked out. The method of determining the optimal advancing speed of the working face and the optimal gas extraction volume during the excavation and recovery of the working face is proposed. The law of gas emission in working face before and after initial weighting and when the work face advances to the areas of different stages of pre-evacuation is analyzed. The dynamic constraint condition considering the mining process is established. The scientific production speed when the work face advanced to different stages is determined and the control mechanism of safe mining is put forward. The purpose of the project is to establish a collaborative optimization model of Co-extraction of coal and gas under complex and multi-constraint conditions and to proposed control theory and method for safe mining of working face, which will help to promote the safety, efficiency, coordination, and green mining of coal and gas.

煤与瓦斯共采是在保障安全生产等约束条件下实现煤炭开采和瓦斯抽采最优化的过程。项目将煤炭开采和瓦斯抽采作为煤与瓦斯共采系统的两个子系统，确定影响共采的煤炭开采控制变量和瓦斯抽采控制变量，揭示煤与瓦斯共采过程两子系统控制变量间的互馈关系；建立煤炭开采和瓦斯抽采在煤矿安全生产等法律、法规约束及生产技术水平限制条件下的约束条件，建立煤与瓦斯共采协同优化非线性模型，研究模型求解方法，编制模型求解程序。提出工作面掘进和回采过程中确定工作面最优推进速度和最优瓦斯抽采量的方法。分析工作面在初次来压前后及推进至预抽瓦斯不同阶段区域时的瓦斯涌出变化规律，建立考虑采动过程的动态约束条件，确定工作面推进至不同阶段的科学生产速度，提出安全开采的控制机制。项目旨在利用建立复杂多约束条件下煤与瓦斯共采协同优化模型，提出工作面安全开采的控制理论和方法，有助于促进煤与瓦斯的安全、高效、协调、绿色开采。

随着开采强度和开采深度的增加，高瓦斯矿井瓦斯治理难度在逐渐加大，安全高效的回收煤炭和瓦斯资源成为矿井所面临的主要难题。项目围绕煤与瓦斯共采实践中采煤和瓦斯治理间既相互制约又相互促进的复杂关系，开展煤与瓦斯协同共采优化研究，为高瓦斯煤层科学开采资源提供理论支撑。. 项目利用自行设计的煤与瓦斯共采相似模拟实验装置，开展煤与瓦斯共采相似模拟实验，研究开采参数对覆岩移动和渗透性控制的作用机制；通过现场测试方法，测试掘进和回采过程的瓦斯涌出量、风排瓦斯量及抽采瓦斯量等数据，建立抽采条件下的瓦斯涌出、风排与开采速度之间的协同关系；将煤炭开采和瓦斯抽采作为煤与瓦斯共采系统的两个子系统，确定影响共采的煤炭开采控制变量和瓦斯抽采控制变量，揭示煤与瓦斯共采过程两子系统控制变量间的互馈关系；建立煤炭开采和瓦斯抽采在煤矿安全生产等法律、法规约束及生产技术水平限制条件下的约束条件，建立煤与瓦斯共采协同优化非线性模型，研究模型求解方法，编制模型求解程序，提出工作面掘进和回采过程中确定工作面最优推进速度和最优瓦斯抽采量的方法。分析工作面在初次来压前后及推进至预抽瓦斯不同阶段区域时的瓦斯涌出变化规律，建立考虑采动过程的动态约束条件，确定工作面推进至不同阶段的科学生产速度，提出安全开采的控制机制。最终建立了煤与瓦斯共采协同优化理论，对优化煤矿煤与瓦斯共采生产系统提供理论和方法，丰富了我国高瓦斯煤层科学开采的理论。. 煤与瓦斯共采协同优化模型及安全开采控制机制研究，旨在利用建立复杂多约束条件下煤与瓦斯共采协同优化模型，提出工作面安全开采的控制理论和方法，是在保障安全生产等约束条件下实现煤炭开采和瓦斯抽采最优化的过程分析，是对煤与瓦斯共采理论的补充和完善，更重要的是保障煤炭安全高效开采。