Abstract: L-shaped well extraction in fracture zones is an effective method to reduce gas disasters in coal mine working faces, but it faces significant technical challenges, such as difficulties in selecting layers and locations, and poor stability of horizontal sections. Take the East 1100 working face of the Weijiadi Coal Mine as the research area, Based on geological engineering applicability analysis and fine characterization of overlying rock structures, the key stratum theory, O-ring theory, and high-level annular fracture zone model were used to determine the optimal layer and location for L-shaped wells. Abaqus software was employed to simulate stress changes in different perforated screen pipes under mining conditions, and the optimal screen pipe specifications were selected. Engineering practices and extraction effect evaluations were further conducted. The results show that: ① The east 1100 working face has high gas content and pressure, with the maximum horizontal principal stress direction in the NE. The coal mining adopts an upward-inclined advance and U-type ventilation, making it suitable for L-shaped well extraction in fracture zones. ② The sandstone layer 70 m above the coal seam, located in the fracture zone (41−140 m), has a large Young's modulus (37.53 GPa), small Poisson's ratio (0.30), significant thickness (>5 m), and good continuity, making it the optimal vertical layer for the horizontal section. The O-ring fracture zone at 70 m above the roof, 28.43−59.73 m from the return airway, is the optimal horizontal plane location. ③ A staggered arrangement of circular perforations (10 mm diameter, 250 mm spacing, 20 holes/m) results in the smallest maximum principal stress and strain values, making it the optimal perforation layout for L-shaped well implementation. ④ During the actual drilling process, CMD-100 drilling rig, 7LZ172×7.0-XISF single-bend 1.5° screw drilling tool and MWD wireless three-opening drilling while drilling were used to complete the screen pipe. The pure volume of negative pressure gas extraction fluctuated at a high level between 0.4 × 10⁴ m³/d and 1.1 × 10⁴ m³/d, with stable production lasting over 500 days. During this period, the spacing of high-level boreholes in the working face was adjusted from 20 m per group to 50 m per group, the ventilation volume was reduced from 1850 m³/min to 1470 m³/min, and the extraction rate increased from 52% to 75%, achieving integrated prevention and control of mine gas and fire hazards.