煤层气高效开发已成为清洁能源与瓦斯灾害防治的优选和战略发展目标，迫切需要创新煤储层改造理论和技术。为解决地面煤层气开发过程面临的储层吸附性强、渗透率低、运移通道易堵塞、水锁效应及水资源匮乏等一系列难题，本研究深入分析了地面煤层气井内高强电爆震体积致裂增渗理论，基于电爆震液相放电冲击波−应力波−震动波传播能量释放特征，建立了高精度能量调配顶底板及煤储层多点电爆震诱导体积致裂模型，提出了煤储层电爆震体积致裂强化煤层气抽采方法，形成了地面煤层气电爆震体积致裂技术及工艺。利用自主研制存储能量高达604.92 kJ且可调控的电爆震体积致裂增渗装备，开展不同电爆震能量循环致裂顶底板及煤层工程试验，在此期间采用地表微震监测系统实时表征储层缝网影响半径，并根据体积致裂效果和长期产气量考察初探电爆震体积致裂技术及装备的可靠性。结果表明：电爆震循环作用诱发裂隙或微孔隙的发育、扩展，形成了高裂缝密度的体积致裂效应；井近区微震信号幅值较大，随着距离增加逐渐减小，微震事件平面分布呈环状向四周扩散；电爆震能量和诱导次数增加导致煤储层缝网影响半径先增大后减小，电爆震水下激发能量361.97 kJ循环诱导形成的缝网影响半径高达200 m左右；重新排采期间平均产气量较衰竭期提高了0.80～1.53倍，验证了提出的电爆震体积致裂技术能够有效改善煤储层，促进煤层气解吸扩散和运移产出。研究成果对低渗透性松软煤储层缝网改造实现煤层气高效开发具有理论与工程指导意义。

The efficient development of coalbed methane has become the preferred and strategic development goal of clean energy and gas disaster prevention and control, and it is urgent to innovate the theory and technology of coal reservoir transformation. In order to solve a series of problems such as strong reservoir adsorption, low permeability, easy blockage of migration channels, water lock effect, and lack of water resources in the development process of surface coalbed methane. In this research, the theory of high-energy electric detonation (HEED) volume fracturing and permeability enhancement in surface coalbed methane wells were deeply analyzed. Based on the energy release characteristics of shock wave-stress wave-vibration wave propagation in electric detonation liquid phase discharge, A multi-point electric detonation-induced volumetric fracturing model of high-precision energy allocation roof, floor, and coal reservoir was established. The method of strengthening coalbed methane extraction by HEED volume fracturing in coal reservoirs is put forward, and the technology and process of HEED volume fracturing of surface coalbed methane are formed. Using the self-developed HEED volume fracturing and permeability increasing equipment with storage energy up to 604.92 kJ and adjustable, an engineering experimental study of roof, floor, and coal seam fracturing caused by different HEED energy cycles was carried out. During this period, the surface microseismic monitoring system was used to characterize the influence radius of the reservoir fracture network in real-time, and the reliability of HEED volume fracturing technology and equipment was investigated according to the volume fracturing effect and long-term coalbed methane production. The results show that the HEED cycle induces the development and expansion of cracks or micropores, and forms a volume fracturing effect with high crack density. The amplitude of the microseismic signal near the well was large and gradually decreased with the increase in distance. The plane distribution of microseismic events was ring-shaped and spread around. The increase of HEED energy and induction times leads to the increase and then decrease of the influence radius of the coal reservoir fracture network. The influence radius of the fracture network induced was as high as 200 m by HEED underwater excitation energy of 361.97 kJ. The average coalbed methane production during the re-extraction period was 0.80～1.53 times higher than that during the depletion period. It was verified that the proposed HEED volume fracturing technology could effectively improve the coal reservoir and promote the desorption, diffusion, and migration of coalbed methane. The research results have theoretical and engineering guiding significance for the fracture network transformation of low permeability soft coal reservoir to realize the efficient development of coalbed methane.