Angular6 如何以角度传递额外的路由参数？

我在Angular 6应用程序上工作，并在应用程序根级别上配置了route survey，然后：id获取它的调查详细信息页面，我尝试使用

 this.router.navigate(['/survey'], this.listedSurvey.surveyIdNum);

但我相信我错过了一些东西，因为我无法做到这一点

应用程序路径 调查模块 成分 更改导航（）

this.router.navigate（['/survey'，this.listedSurvey.surveyIdNum]）

参考：

const routes: Routes = [
{ path:'welcome', component:WelcomeComponent },
{ path:'', redirectTo: 'welcome', pathMatch:'full'},
{ path:'survey', loadChildren: '../survey/survey.module#SurveyModule' },
{ path:'**', component:PageNotFoundComponent}
];

@NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [
 RouterModule
 ]
 })

 export class AppRoutingModule { }

const routes: Routes = [
{ 
    path:'', 
    component:SurveyComponent,
},
{
    path:':id',
    component: SurveyFormComponent
 }
];

@NgModule({
 imports:[
     RouterModule.forChild(routes)
 ],
 exports:[]
})
 export class SurveyRouting{
}

 private handleSelectedSurvey(dataItem:any){
   this.listedSurvey = dataItem;
   const a:number = 2;
   //this.router.navigate(['/survey'], this.listedSurvey.surveyIdNum);
   this.router.navigate(['/survey'],{queryParams:{id:a}}); 
 }