地下金属矿山斜坡道浆土路修筑工艺及应用研究

斜坡道是地下金属矿山的主要运输通道，其道路质量直接影响着矿山的安全运输和经济效益。针对斜坡道混凝土浇筑路面存在的筑路成本高、养护时间长、使用寿命短及维护困难等不足，引入浆土路修筑技术，开展了地下金属矿山斜坡道浆土路筑路材料配比试验、黏土搓条和崩解试验、水洗筛分试验，并在云南卡房分公司完成了浆土路试验路段的修筑。结果表明：浆土路筑路技术能够很好地应用于地下矿山道路修筑，具有施工工艺简单、筑路成本低、施工周期短、承载能力强、抑尘防滑和低碳环保等诸多优点，为地下金属矿山道路修筑提供了工程借鉴，对于矿山降本增效、节能减排及安全高效具有重要的意义。

A Study of Construction Technology and Application of Pulp-Soil Decline at an Underground Metal Mine

The decline is the main access channel of underground metal mines，and its road quality directly affects the safe transportation and economic benefits of the mine.Flat and durable roads can effectively reduce vehicle driving resistance，reduce fuel consumption and vehicle maintenance costs，and at the same time can extend the service life of tires，improve the work efficiency and safety comfort of vehicle transportation，and greatly reduce hauling costs.At present，the decline pavement mostly adopts concrete pouring method，which has the shortcomings of high road construction cost，long maintenance time，short service life and difficult maintenance.At present，the pulp-soil road construction technology has been widely used in the con-struction of open-pit mine roads，and has played an important role.But for underground mines，due to the construction environment of underground confined space，water accumulation on the floor or dripping on the roof，and high anti-skid requirements on the road，this technology is still less used.In order to solve the shortage of concrete road construction methods for underground mine decline，the construction process of slurry road construction technology in the decline construction of the Kafang Branch of Yunnan Tin Industry Co.，Ltd. was studied，and the mud belt length of the yellow clay in the area was quickly identified by using the mud belt method to be 80 cm.The disintegration method identified the good water resistance of yellow clay，and comprehensively determined that yellow clay was most suitable for building slurry dirt roads.The washing and screening test was carried out to determine the optimal material ratio of yellow clay，manufactured sand，fine aggregate and coarse aggregate，and the field test of pulp dirt road construction was carried out on the decline of the Kafang Branch，and the on-site construction process of the pulp road was introduced in detail.The results show that the pulp-soil road construction technology can be well applied to the underground mine road construction，and has many advantages such as simple construction technology，low road construction cost，short construction period，strong bearing capacity，dust and skid control，low carbon environmental protection，etc.It has important significance for the mine cost reduction and efficiency improvement，energy saving and emission reduction，safety and high efficiency.