With　abundant　solar　radiation　resource,　land　resource　advantage　of　desertification　in　northwest　areas　of　China　is　the　ideal　place　to　build　solar　thermal　power　stations,　however,　these　areas　at　the　age　of　wind,　sand　and　dust　weather　also　to　safe　and　reliable　operation　of　the　solar　thermal　power　generation　equipment　produced　adverse　effect.　By　numerical　simulation,　currently　the　most　widely　used　RP　-　3　type　collector　surface　wind　pressure　in　three-dimensional　steady　flow　field　characteristics　and　the　settlement　of　sand　dust　in　two　phase　flow　field　characteristics,　simulated　and　analyzed　the　windward　angle　and　wind　speed　is　obtained　for　slot　pressure　and　the　surrounding　dust　collector　surface　subsidence　rule　of　the　influence　of　the　relationship.　The　conclusion　of　changing　wind　angles　had　no　effect　on　the　wind　pressure　coefficient　of　the　value　of　windward　and　the　changing　wind　angles　had　a　great　effect　on　the　wind　pressure　coefficient　of　the　value　of　leeward;　when　the　different　angles,　surface　of　the　collector　and　the　flow　field　around　the　dust　volume　fraction　changes　have　a　big　difference.　This　study　is　suited　to　the　characteristics　of　the　climate　in　our　country　groove　collector　in　the　efficient　operation　of　wind　environment　provides　certain　theory　basis.　©　2018　Journal　of　Mechanical　Engineering.