List posts that have the current url taxonomy

by

You should try like

<?php 
    $projectslist = array(
      'post_type'=>'projets',
      'orderby' => 'rand',
      'tax_query' => array(
        array(
            'taxonomy' => 'categoriesprojects',
            'field'    => 'slug',
            'terms'    => 'events',
        ),
      ),
    ); 
?>

Hope it will help you.

Please let me know if any query.