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为满足三峡工程茅坪溪土石上贝沥青混凝土心墙正常（浇筑碾压）施工，根据设计和施工要求，需对大坝右侧混凝土防渗墙进行削坡处理。为确保防渗墙拆除线以下墙体部分的安全和拆除质量，监理工程师对施工单位爆破方案进行了审核和修改，提出防渗墙宜采取光面爆破切割法，并在拆除施工中要求施工单位预先进行爆破切割试验和安全振动监测，根据试验和振动监测资料，调整和优化爆破参数，使36m长的防渗墙体，按1：2被比沿拆除线方向一次爆破切割成功，确保了防渗墙拆除线以下墙体的安全，满足了质量和工期要求。
In order to meet the normal (pouring and rolling) construction of the asphalt concrete core wall of the Maopingxi rocky surface of the Three Gorges Project, the concrete impervious wall on the right side of the dam needs to be cut according to the design and construction requirements. In order to ensure the safety and demolition quality of wall parts below the cut-off wall, the supervision engineer reviewed and modified the blasting plan of the construction unit, proposed that the cut-off wall should adopt the smooth blasting cutting method and required the construction unit Blasting cutting test and safety vibration monitoring are conducted in advance. According to the test and vibration monitoring data, the blasting parameters are adjusted and optimized so that the 36m impermeable wall body is successfully blasted at a ratio of 1: 2 by one blasting along the direction of demolition line Permeability wall demolition line below the wall safety, to meet the quality and duration requirements.