由河海大学农田水利工程系教师刘才良、舒世馨研制的“土工织物孔隙分布测定装置”已由中国专利局于1988年4月3日授予专利权,专利号为:86210123。土工织物是近20年内发明的一种新型建筑材料,主要用在土木工程中代替天然的砂砾料作为渗透层。土工织物在使用时既要防止孔隙被淤塞而影响透水性,又要防止被保护土穿过孔 Developed by Liu Cai-liang and Shu Shi-xin, faculty of farmland and water conservancy engineering department of Hohai University, “Geodetic Pore Distribution Measurement Device” was granted by China Patent Office on April 3, 1988 with the patent number of 86210123. Geotextile is invented in recent 20 years, a new type of building materials, mainly used in civil engineering instead of natural sand and gravel as infiltration layer. Geotextiles in the use of both to prevent the pores are blocked and affect the water permeability, but also to prevent the protected earth through the hole